2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/dmi.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
37 #include <drm/i915_drm.h>
39 #include "i915_trace.h"
40 #include <drm/drm_atomic.h>
41 #include <drm/drm_atomic_helper.h>
42 #include <drm/drm_dp_helper.h>
43 #include <drm/drm_crtc_helper.h>
44 #include <drm/drm_plane_helper.h>
45 #include <drm/drm_rect.h>
46 #include <linux/dma_remapping.h>
48 /* Primary plane formats for gen <= 3 */
49 static const uint32_t i8xx_primary_formats[] = {
56 /* Primary plane formats for gen >= 4 */
57 static const uint32_t i965_primary_formats[] = {
62 DRM_FORMAT_XRGB2101010,
63 DRM_FORMAT_XBGR2101010,
66 static const uint32_t skl_primary_formats[] = {
73 DRM_FORMAT_XRGB2101010,
74 DRM_FORMAT_XBGR2101010,
82 static const uint32_t intel_cursor_formats[] = {
86 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
88 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
89 struct intel_crtc_state *pipe_config);
90 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
91 struct intel_crtc_state *pipe_config);
93 static int intel_framebuffer_init(struct drm_device *dev,
94 struct intel_framebuffer *ifb,
95 struct drm_mode_fb_cmd2 *mode_cmd,
96 struct drm_i915_gem_object *obj);
97 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
98 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
99 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
100 struct intel_link_m_n *m_n,
101 struct intel_link_m_n *m2_n2);
102 static void ironlake_set_pipeconf(struct drm_crtc *crtc);
103 static void haswell_set_pipeconf(struct drm_crtc *crtc);
104 static void intel_set_pipe_csc(struct drm_crtc *crtc);
105 static void vlv_prepare_pll(struct intel_crtc *crtc,
106 const struct intel_crtc_state *pipe_config);
107 static void chv_prepare_pll(struct intel_crtc *crtc,
108 const struct intel_crtc_state *pipe_config);
109 static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
110 static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
111 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
112 struct intel_crtc_state *crtc_state);
113 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
115 static void skylake_pfit_enable(struct intel_crtc *crtc);
116 static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
117 static void ironlake_pfit_enable(struct intel_crtc *crtc);
118 static void intel_modeset_setup_hw_state(struct drm_device *dev);
126 int p2_slow, p2_fast;
129 typedef struct intel_limit intel_limit_t;
131 intel_range_t dot, vco, n, m, m1, m2, p, p1;
135 /* returns HPLL frequency in kHz */
136 static int valleyview_get_vco(struct drm_i915_private *dev_priv)
138 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
140 /* Obtain SKU information */
141 mutex_lock(&dev_priv->sb_lock);
142 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
143 CCK_FUSE_HPLL_FREQ_MASK;
144 mutex_unlock(&dev_priv->sb_lock);
146 return vco_freq[hpll_freq] * 1000;
149 static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
150 const char *name, u32 reg)
155 if (dev_priv->hpll_freq == 0)
156 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
158 mutex_lock(&dev_priv->sb_lock);
159 val = vlv_cck_read(dev_priv, reg);
160 mutex_unlock(&dev_priv->sb_lock);
162 divider = val & CCK_FREQUENCY_VALUES;
164 WARN((val & CCK_FREQUENCY_STATUS) !=
165 (divider << CCK_FREQUENCY_STATUS_SHIFT),
166 "%s change in progress\n", name);
168 return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
172 intel_pch_rawclk(struct drm_device *dev)
174 struct drm_i915_private *dev_priv = dev->dev_private;
176 WARN_ON(!HAS_PCH_SPLIT(dev));
178 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
181 /* hrawclock is 1/4 the FSB frequency */
182 int intel_hrawclk(struct drm_device *dev)
184 struct drm_i915_private *dev_priv = dev->dev_private;
187 /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */
188 if (IS_VALLEYVIEW(dev))
191 clkcfg = I915_READ(CLKCFG);
192 switch (clkcfg & CLKCFG_FSB_MASK) {
201 case CLKCFG_FSB_1067:
203 case CLKCFG_FSB_1333:
205 /* these two are just a guess; one of them might be right */
206 case CLKCFG_FSB_1600:
207 case CLKCFG_FSB_1600_ALT:
214 static void intel_update_czclk(struct drm_i915_private *dev_priv)
216 if (!IS_VALLEYVIEW(dev_priv))
219 dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
220 CCK_CZ_CLOCK_CONTROL);
222 DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
225 static inline u32 /* units of 100MHz */
226 intel_fdi_link_freq(struct drm_device *dev)
229 struct drm_i915_private *dev_priv = dev->dev_private;
230 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
235 static const intel_limit_t intel_limits_i8xx_dac = {
236 .dot = { .min = 25000, .max = 350000 },
237 .vco = { .min = 908000, .max = 1512000 },
238 .n = { .min = 2, .max = 16 },
239 .m = { .min = 96, .max = 140 },
240 .m1 = { .min = 18, .max = 26 },
241 .m2 = { .min = 6, .max = 16 },
242 .p = { .min = 4, .max = 128 },
243 .p1 = { .min = 2, .max = 33 },
244 .p2 = { .dot_limit = 165000,
245 .p2_slow = 4, .p2_fast = 2 },
248 static const intel_limit_t intel_limits_i8xx_dvo = {
249 .dot = { .min = 25000, .max = 350000 },
250 .vco = { .min = 908000, .max = 1512000 },
251 .n = { .min = 2, .max = 16 },
252 .m = { .min = 96, .max = 140 },
253 .m1 = { .min = 18, .max = 26 },
254 .m2 = { .min = 6, .max = 16 },
255 .p = { .min = 4, .max = 128 },
256 .p1 = { .min = 2, .max = 33 },
257 .p2 = { .dot_limit = 165000,
258 .p2_slow = 4, .p2_fast = 4 },
261 static const intel_limit_t intel_limits_i8xx_lvds = {
262 .dot = { .min = 25000, .max = 350000 },
263 .vco = { .min = 908000, .max = 1512000 },
264 .n = { .min = 2, .max = 16 },
265 .m = { .min = 96, .max = 140 },
266 .m1 = { .min = 18, .max = 26 },
267 .m2 = { .min = 6, .max = 16 },
268 .p = { .min = 4, .max = 128 },
269 .p1 = { .min = 1, .max = 6 },
270 .p2 = { .dot_limit = 165000,
271 .p2_slow = 14, .p2_fast = 7 },
274 static const intel_limit_t intel_limits_i9xx_sdvo = {
275 .dot = { .min = 20000, .max = 400000 },
276 .vco = { .min = 1400000, .max = 2800000 },
277 .n = { .min = 1, .max = 6 },
278 .m = { .min = 70, .max = 120 },
279 .m1 = { .min = 8, .max = 18 },
280 .m2 = { .min = 3, .max = 7 },
281 .p = { .min = 5, .max = 80 },
282 .p1 = { .min = 1, .max = 8 },
283 .p2 = { .dot_limit = 200000,
284 .p2_slow = 10, .p2_fast = 5 },
287 static const intel_limit_t intel_limits_i9xx_lvds = {
288 .dot = { .min = 20000, .max = 400000 },
289 .vco = { .min = 1400000, .max = 2800000 },
290 .n = { .min = 1, .max = 6 },
291 .m = { .min = 70, .max = 120 },
292 .m1 = { .min = 8, .max = 18 },
293 .m2 = { .min = 3, .max = 7 },
294 .p = { .min = 7, .max = 98 },
295 .p1 = { .min = 1, .max = 8 },
296 .p2 = { .dot_limit = 112000,
297 .p2_slow = 14, .p2_fast = 7 },
301 static const intel_limit_t intel_limits_g4x_sdvo = {
302 .dot = { .min = 25000, .max = 270000 },
303 .vco = { .min = 1750000, .max = 3500000},
304 .n = { .min = 1, .max = 4 },
305 .m = { .min = 104, .max = 138 },
306 .m1 = { .min = 17, .max = 23 },
307 .m2 = { .min = 5, .max = 11 },
308 .p = { .min = 10, .max = 30 },
309 .p1 = { .min = 1, .max = 3},
310 .p2 = { .dot_limit = 270000,
316 static const intel_limit_t intel_limits_g4x_hdmi = {
317 .dot = { .min = 22000, .max = 400000 },
318 .vco = { .min = 1750000, .max = 3500000},
319 .n = { .min = 1, .max = 4 },
320 .m = { .min = 104, .max = 138 },
321 .m1 = { .min = 16, .max = 23 },
322 .m2 = { .min = 5, .max = 11 },
323 .p = { .min = 5, .max = 80 },
324 .p1 = { .min = 1, .max = 8},
325 .p2 = { .dot_limit = 165000,
326 .p2_slow = 10, .p2_fast = 5 },
329 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
330 .dot = { .min = 20000, .max = 115000 },
331 .vco = { .min = 1750000, .max = 3500000 },
332 .n = { .min = 1, .max = 3 },
333 .m = { .min = 104, .max = 138 },
334 .m1 = { .min = 17, .max = 23 },
335 .m2 = { .min = 5, .max = 11 },
336 .p = { .min = 28, .max = 112 },
337 .p1 = { .min = 2, .max = 8 },
338 .p2 = { .dot_limit = 0,
339 .p2_slow = 14, .p2_fast = 14
343 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
344 .dot = { .min = 80000, .max = 224000 },
345 .vco = { .min = 1750000, .max = 3500000 },
346 .n = { .min = 1, .max = 3 },
347 .m = { .min = 104, .max = 138 },
348 .m1 = { .min = 17, .max = 23 },
349 .m2 = { .min = 5, .max = 11 },
350 .p = { .min = 14, .max = 42 },
351 .p1 = { .min = 2, .max = 6 },
352 .p2 = { .dot_limit = 0,
353 .p2_slow = 7, .p2_fast = 7
357 static const intel_limit_t intel_limits_pineview_sdvo = {
358 .dot = { .min = 20000, .max = 400000},
359 .vco = { .min = 1700000, .max = 3500000 },
360 /* Pineview's Ncounter is a ring counter */
361 .n = { .min = 3, .max = 6 },
362 .m = { .min = 2, .max = 256 },
363 /* Pineview only has one combined m divider, which we treat as m2. */
364 .m1 = { .min = 0, .max = 0 },
365 .m2 = { .min = 0, .max = 254 },
366 .p = { .min = 5, .max = 80 },
367 .p1 = { .min = 1, .max = 8 },
368 .p2 = { .dot_limit = 200000,
369 .p2_slow = 10, .p2_fast = 5 },
372 static const intel_limit_t intel_limits_pineview_lvds = {
373 .dot = { .min = 20000, .max = 400000 },
374 .vco = { .min = 1700000, .max = 3500000 },
375 .n = { .min = 3, .max = 6 },
376 .m = { .min = 2, .max = 256 },
377 .m1 = { .min = 0, .max = 0 },
378 .m2 = { .min = 0, .max = 254 },
379 .p = { .min = 7, .max = 112 },
380 .p1 = { .min = 1, .max = 8 },
381 .p2 = { .dot_limit = 112000,
382 .p2_slow = 14, .p2_fast = 14 },
385 /* Ironlake / Sandybridge
387 * We calculate clock using (register_value + 2) for N/M1/M2, so here
388 * the range value for them is (actual_value - 2).
390 static const intel_limit_t intel_limits_ironlake_dac = {
391 .dot = { .min = 25000, .max = 350000 },
392 .vco = { .min = 1760000, .max = 3510000 },
393 .n = { .min = 1, .max = 5 },
394 .m = { .min = 79, .max = 127 },
395 .m1 = { .min = 12, .max = 22 },
396 .m2 = { .min = 5, .max = 9 },
397 .p = { .min = 5, .max = 80 },
398 .p1 = { .min = 1, .max = 8 },
399 .p2 = { .dot_limit = 225000,
400 .p2_slow = 10, .p2_fast = 5 },
403 static const intel_limit_t intel_limits_ironlake_single_lvds = {
404 .dot = { .min = 25000, .max = 350000 },
405 .vco = { .min = 1760000, .max = 3510000 },
406 .n = { .min = 1, .max = 3 },
407 .m = { .min = 79, .max = 118 },
408 .m1 = { .min = 12, .max = 22 },
409 .m2 = { .min = 5, .max = 9 },
410 .p = { .min = 28, .max = 112 },
411 .p1 = { .min = 2, .max = 8 },
412 .p2 = { .dot_limit = 225000,
413 .p2_slow = 14, .p2_fast = 14 },
416 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
417 .dot = { .min = 25000, .max = 350000 },
418 .vco = { .min = 1760000, .max = 3510000 },
419 .n = { .min = 1, .max = 3 },
420 .m = { .min = 79, .max = 127 },
421 .m1 = { .min = 12, .max = 22 },
422 .m2 = { .min = 5, .max = 9 },
423 .p = { .min = 14, .max = 56 },
424 .p1 = { .min = 2, .max = 8 },
425 .p2 = { .dot_limit = 225000,
426 .p2_slow = 7, .p2_fast = 7 },
429 /* LVDS 100mhz refclk limits. */
430 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
431 .dot = { .min = 25000, .max = 350000 },
432 .vco = { .min = 1760000, .max = 3510000 },
433 .n = { .min = 1, .max = 2 },
434 .m = { .min = 79, .max = 126 },
435 .m1 = { .min = 12, .max = 22 },
436 .m2 = { .min = 5, .max = 9 },
437 .p = { .min = 28, .max = 112 },
438 .p1 = { .min = 2, .max = 8 },
439 .p2 = { .dot_limit = 225000,
440 .p2_slow = 14, .p2_fast = 14 },
443 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
444 .dot = { .min = 25000, .max = 350000 },
445 .vco = { .min = 1760000, .max = 3510000 },
446 .n = { .min = 1, .max = 3 },
447 .m = { .min = 79, .max = 126 },
448 .m1 = { .min = 12, .max = 22 },
449 .m2 = { .min = 5, .max = 9 },
450 .p = { .min = 14, .max = 42 },
451 .p1 = { .min = 2, .max = 6 },
452 .p2 = { .dot_limit = 225000,
453 .p2_slow = 7, .p2_fast = 7 },
456 static const intel_limit_t intel_limits_vlv = {
458 * These are the data rate limits (measured in fast clocks)
459 * since those are the strictest limits we have. The fast
460 * clock and actual rate limits are more relaxed, so checking
461 * them would make no difference.
463 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
464 .vco = { .min = 4000000, .max = 6000000 },
465 .n = { .min = 1, .max = 7 },
466 .m1 = { .min = 2, .max = 3 },
467 .m2 = { .min = 11, .max = 156 },
468 .p1 = { .min = 2, .max = 3 },
469 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
472 static const intel_limit_t intel_limits_chv = {
474 * These are the data rate limits (measured in fast clocks)
475 * since those are the strictest limits we have. The fast
476 * clock and actual rate limits are more relaxed, so checking
477 * them would make no difference.
479 .dot = { .min = 25000 * 5, .max = 540000 * 5},
480 .vco = { .min = 4800000, .max = 6480000 },
481 .n = { .min = 1, .max = 1 },
482 .m1 = { .min = 2, .max = 2 },
483 .m2 = { .min = 24 << 22, .max = 175 << 22 },
484 .p1 = { .min = 2, .max = 4 },
485 .p2 = { .p2_slow = 1, .p2_fast = 14 },
488 static const intel_limit_t intel_limits_bxt = {
489 /* FIXME: find real dot limits */
490 .dot = { .min = 0, .max = INT_MAX },
491 .vco = { .min = 4800000, .max = 6700000 },
492 .n = { .min = 1, .max = 1 },
493 .m1 = { .min = 2, .max = 2 },
494 /* FIXME: find real m2 limits */
495 .m2 = { .min = 2 << 22, .max = 255 << 22 },
496 .p1 = { .min = 2, .max = 4 },
497 .p2 = { .p2_slow = 1, .p2_fast = 20 },
501 needs_modeset(struct drm_crtc_state *state)
503 return drm_atomic_crtc_needs_modeset(state);
507 * Returns whether any output on the specified pipe is of the specified type
509 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
511 struct drm_device *dev = crtc->base.dev;
512 struct intel_encoder *encoder;
514 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
515 if (encoder->type == type)
522 * Returns whether any output on the specified pipe will have the specified
523 * type after a staged modeset is complete, i.e., the same as
524 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
527 static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
530 struct drm_atomic_state *state = crtc_state->base.state;
531 struct drm_connector *connector;
532 struct drm_connector_state *connector_state;
533 struct intel_encoder *encoder;
534 int i, num_connectors = 0;
536 for_each_connector_in_state(state, connector, connector_state, i) {
537 if (connector_state->crtc != crtc_state->base.crtc)
542 encoder = to_intel_encoder(connector_state->best_encoder);
543 if (encoder->type == type)
547 WARN_ON(num_connectors == 0);
552 static const intel_limit_t *
553 intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
555 struct drm_device *dev = crtc_state->base.crtc->dev;
556 const intel_limit_t *limit;
558 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
559 if (intel_is_dual_link_lvds(dev)) {
560 if (refclk == 100000)
561 limit = &intel_limits_ironlake_dual_lvds_100m;
563 limit = &intel_limits_ironlake_dual_lvds;
565 if (refclk == 100000)
566 limit = &intel_limits_ironlake_single_lvds_100m;
568 limit = &intel_limits_ironlake_single_lvds;
571 limit = &intel_limits_ironlake_dac;
576 static const intel_limit_t *
577 intel_g4x_limit(struct intel_crtc_state *crtc_state)
579 struct drm_device *dev = crtc_state->base.crtc->dev;
580 const intel_limit_t *limit;
582 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
583 if (intel_is_dual_link_lvds(dev))
584 limit = &intel_limits_g4x_dual_channel_lvds;
586 limit = &intel_limits_g4x_single_channel_lvds;
587 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
588 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
589 limit = &intel_limits_g4x_hdmi;
590 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
591 limit = &intel_limits_g4x_sdvo;
592 } else /* The option is for other outputs */
593 limit = &intel_limits_i9xx_sdvo;
598 static const intel_limit_t *
599 intel_limit(struct intel_crtc_state *crtc_state, int refclk)
601 struct drm_device *dev = crtc_state->base.crtc->dev;
602 const intel_limit_t *limit;
605 limit = &intel_limits_bxt;
606 else if (HAS_PCH_SPLIT(dev))
607 limit = intel_ironlake_limit(crtc_state, refclk);
608 else if (IS_G4X(dev)) {
609 limit = intel_g4x_limit(crtc_state);
610 } else if (IS_PINEVIEW(dev)) {
611 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
612 limit = &intel_limits_pineview_lvds;
614 limit = &intel_limits_pineview_sdvo;
615 } else if (IS_CHERRYVIEW(dev)) {
616 limit = &intel_limits_chv;
617 } else if (IS_VALLEYVIEW(dev)) {
618 limit = &intel_limits_vlv;
619 } else if (!IS_GEN2(dev)) {
620 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
621 limit = &intel_limits_i9xx_lvds;
623 limit = &intel_limits_i9xx_sdvo;
625 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
626 limit = &intel_limits_i8xx_lvds;
627 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
628 limit = &intel_limits_i8xx_dvo;
630 limit = &intel_limits_i8xx_dac;
636 * Platform specific helpers to calculate the port PLL loopback- (clock.m),
637 * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
638 * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
639 * The helpers' return value is the rate of the clock that is fed to the
640 * display engine's pipe which can be the above fast dot clock rate or a
641 * divided-down version of it.
643 /* m1 is reserved as 0 in Pineview, n is a ring counter */
644 static int pnv_calc_dpll_params(int refclk, intel_clock_t *clock)
646 clock->m = clock->m2 + 2;
647 clock->p = clock->p1 * clock->p2;
648 if (WARN_ON(clock->n == 0 || clock->p == 0))
650 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
651 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
656 static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
658 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
661 static int i9xx_calc_dpll_params(int refclk, intel_clock_t *clock)
663 clock->m = i9xx_dpll_compute_m(clock);
664 clock->p = clock->p1 * clock->p2;
665 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
667 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
668 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
673 static int vlv_calc_dpll_params(int refclk, intel_clock_t *clock)
675 clock->m = clock->m1 * clock->m2;
676 clock->p = clock->p1 * clock->p2;
677 if (WARN_ON(clock->n == 0 || clock->p == 0))
679 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
680 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
682 return clock->dot / 5;
685 int chv_calc_dpll_params(int refclk, intel_clock_t *clock)
687 clock->m = clock->m1 * clock->m2;
688 clock->p = clock->p1 * clock->p2;
689 if (WARN_ON(clock->n == 0 || clock->p == 0))
691 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
693 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
695 return clock->dot / 5;
698 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
700 * Returns whether the given set of divisors are valid for a given refclk with
701 * the given connectors.
704 static bool intel_PLL_is_valid(struct drm_device *dev,
705 const intel_limit_t *limit,
706 const intel_clock_t *clock)
708 if (clock->n < limit->n.min || limit->n.max < clock->n)
709 INTELPllInvalid("n out of range\n");
710 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
711 INTELPllInvalid("p1 out of range\n");
712 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
713 INTELPllInvalid("m2 out of range\n");
714 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
715 INTELPllInvalid("m1 out of range\n");
717 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) && !IS_BROXTON(dev))
718 if (clock->m1 <= clock->m2)
719 INTELPllInvalid("m1 <= m2\n");
721 if (!IS_VALLEYVIEW(dev) && !IS_BROXTON(dev)) {
722 if (clock->p < limit->p.min || limit->p.max < clock->p)
723 INTELPllInvalid("p out of range\n");
724 if (clock->m < limit->m.min || limit->m.max < clock->m)
725 INTELPllInvalid("m out of range\n");
728 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
729 INTELPllInvalid("vco out of range\n");
730 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
731 * connector, etc., rather than just a single range.
733 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
734 INTELPllInvalid("dot out of range\n");
740 i9xx_select_p2_div(const intel_limit_t *limit,
741 const struct intel_crtc_state *crtc_state,
744 struct drm_device *dev = crtc_state->base.crtc->dev;
746 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
748 * For LVDS just rely on its current settings for dual-channel.
749 * We haven't figured out how to reliably set up different
750 * single/dual channel state, if we even can.
752 if (intel_is_dual_link_lvds(dev))
753 return limit->p2.p2_fast;
755 return limit->p2.p2_slow;
757 if (target < limit->p2.dot_limit)
758 return limit->p2.p2_slow;
760 return limit->p2.p2_fast;
765 i9xx_find_best_dpll(const intel_limit_t *limit,
766 struct intel_crtc_state *crtc_state,
767 int target, int refclk, intel_clock_t *match_clock,
768 intel_clock_t *best_clock)
770 struct drm_device *dev = crtc_state->base.crtc->dev;
774 memset(best_clock, 0, sizeof(*best_clock));
776 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
778 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
780 for (clock.m2 = limit->m2.min;
781 clock.m2 <= limit->m2.max; clock.m2++) {
782 if (clock.m2 >= clock.m1)
784 for (clock.n = limit->n.min;
785 clock.n <= limit->n.max; clock.n++) {
786 for (clock.p1 = limit->p1.min;
787 clock.p1 <= limit->p1.max; clock.p1++) {
790 i9xx_calc_dpll_params(refclk, &clock);
791 if (!intel_PLL_is_valid(dev, limit,
795 clock.p != match_clock->p)
798 this_err = abs(clock.dot - target);
799 if (this_err < err) {
808 return (err != target);
812 pnv_find_best_dpll(const intel_limit_t *limit,
813 struct intel_crtc_state *crtc_state,
814 int target, int refclk, intel_clock_t *match_clock,
815 intel_clock_t *best_clock)
817 struct drm_device *dev = crtc_state->base.crtc->dev;
821 memset(best_clock, 0, sizeof(*best_clock));
823 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
825 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
827 for (clock.m2 = limit->m2.min;
828 clock.m2 <= limit->m2.max; clock.m2++) {
829 for (clock.n = limit->n.min;
830 clock.n <= limit->n.max; clock.n++) {
831 for (clock.p1 = limit->p1.min;
832 clock.p1 <= limit->p1.max; clock.p1++) {
835 pnv_calc_dpll_params(refclk, &clock);
836 if (!intel_PLL_is_valid(dev, limit,
840 clock.p != match_clock->p)
843 this_err = abs(clock.dot - target);
844 if (this_err < err) {
853 return (err != target);
857 g4x_find_best_dpll(const intel_limit_t *limit,
858 struct intel_crtc_state *crtc_state,
859 int target, int refclk, intel_clock_t *match_clock,
860 intel_clock_t *best_clock)
862 struct drm_device *dev = crtc_state->base.crtc->dev;
866 /* approximately equals target * 0.00585 */
867 int err_most = (target >> 8) + (target >> 9);
869 memset(best_clock, 0, sizeof(*best_clock));
871 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
873 max_n = limit->n.max;
874 /* based on hardware requirement, prefer smaller n to precision */
875 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
876 /* based on hardware requirement, prefere larger m1,m2 */
877 for (clock.m1 = limit->m1.max;
878 clock.m1 >= limit->m1.min; clock.m1--) {
879 for (clock.m2 = limit->m2.max;
880 clock.m2 >= limit->m2.min; clock.m2--) {
881 for (clock.p1 = limit->p1.max;
882 clock.p1 >= limit->p1.min; clock.p1--) {
885 i9xx_calc_dpll_params(refclk, &clock);
886 if (!intel_PLL_is_valid(dev, limit,
890 this_err = abs(clock.dot - target);
891 if (this_err < err_most) {
905 * Check if the calculated PLL configuration is more optimal compared to the
906 * best configuration and error found so far. Return the calculated error.
908 static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
909 const intel_clock_t *calculated_clock,
910 const intel_clock_t *best_clock,
911 unsigned int best_error_ppm,
912 unsigned int *error_ppm)
915 * For CHV ignore the error and consider only the P value.
916 * Prefer a bigger P value based on HW requirements.
918 if (IS_CHERRYVIEW(dev)) {
921 return calculated_clock->p > best_clock->p;
924 if (WARN_ON_ONCE(!target_freq))
927 *error_ppm = div_u64(1000000ULL *
928 abs(target_freq - calculated_clock->dot),
931 * Prefer a better P value over a better (smaller) error if the error
932 * is small. Ensure this preference for future configurations too by
933 * setting the error to 0.
935 if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
941 return *error_ppm + 10 < best_error_ppm;
945 vlv_find_best_dpll(const intel_limit_t *limit,
946 struct intel_crtc_state *crtc_state,
947 int target, int refclk, intel_clock_t *match_clock,
948 intel_clock_t *best_clock)
950 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
951 struct drm_device *dev = crtc->base.dev;
953 unsigned int bestppm = 1000000;
954 /* min update 19.2 MHz */
955 int max_n = min(limit->n.max, refclk / 19200);
958 target *= 5; /* fast clock */
960 memset(best_clock, 0, sizeof(*best_clock));
962 /* based on hardware requirement, prefer smaller n to precision */
963 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
964 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
965 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
966 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
967 clock.p = clock.p1 * clock.p2;
968 /* based on hardware requirement, prefer bigger m1,m2 values */
969 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
972 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
975 vlv_calc_dpll_params(refclk, &clock);
977 if (!intel_PLL_is_valid(dev, limit,
981 if (!vlv_PLL_is_optimal(dev, target,
999 chv_find_best_dpll(const intel_limit_t *limit,
1000 struct intel_crtc_state *crtc_state,
1001 int target, int refclk, intel_clock_t *match_clock,
1002 intel_clock_t *best_clock)
1004 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1005 struct drm_device *dev = crtc->base.dev;
1006 unsigned int best_error_ppm;
1007 intel_clock_t clock;
1011 memset(best_clock, 0, sizeof(*best_clock));
1012 best_error_ppm = 1000000;
1015 * Based on hardware doc, the n always set to 1, and m1 always
1016 * set to 2. If requires to support 200Mhz refclk, we need to
1017 * revisit this because n may not 1 anymore.
1019 clock.n = 1, clock.m1 = 2;
1020 target *= 5; /* fast clock */
1022 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
1023 for (clock.p2 = limit->p2.p2_fast;
1024 clock.p2 >= limit->p2.p2_slow;
1025 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
1026 unsigned int error_ppm;
1028 clock.p = clock.p1 * clock.p2;
1030 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
1031 clock.n) << 22, refclk * clock.m1);
1033 if (m2 > INT_MAX/clock.m1)
1038 chv_calc_dpll_params(refclk, &clock);
1040 if (!intel_PLL_is_valid(dev, limit, &clock))
1043 if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
1044 best_error_ppm, &error_ppm))
1047 *best_clock = clock;
1048 best_error_ppm = error_ppm;
1056 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1057 intel_clock_t *best_clock)
1059 int refclk = i9xx_get_refclk(crtc_state, 0);
1061 return chv_find_best_dpll(intel_limit(crtc_state, refclk), crtc_state,
1062 target_clock, refclk, NULL, best_clock);
1065 bool intel_crtc_active(struct drm_crtc *crtc)
1067 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1069 /* Be paranoid as we can arrive here with only partial
1070 * state retrieved from the hardware during setup.
1072 * We can ditch the adjusted_mode.crtc_clock check as soon
1073 * as Haswell has gained clock readout/fastboot support.
1075 * We can ditch the crtc->primary->fb check as soon as we can
1076 * properly reconstruct framebuffers.
1078 * FIXME: The intel_crtc->active here should be switched to
1079 * crtc->state->active once we have proper CRTC states wired up
1082 return intel_crtc->active && crtc->primary->state->fb &&
1083 intel_crtc->config->base.adjusted_mode.crtc_clock;
1086 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1089 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1090 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1092 return intel_crtc->config->cpu_transcoder;
1095 static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
1097 struct drm_i915_private *dev_priv = dev->dev_private;
1098 u32 reg = PIPEDSL(pipe);
1103 line_mask = DSL_LINEMASK_GEN2;
1105 line_mask = DSL_LINEMASK_GEN3;
1107 line1 = I915_READ(reg) & line_mask;
1109 line2 = I915_READ(reg) & line_mask;
1111 return line1 == line2;
1115 * intel_wait_for_pipe_off - wait for pipe to turn off
1116 * @crtc: crtc whose pipe to wait for
1118 * After disabling a pipe, we can't wait for vblank in the usual way,
1119 * spinning on the vblank interrupt status bit, since we won't actually
1120 * see an interrupt when the pipe is disabled.
1122 * On Gen4 and above:
1123 * wait for the pipe register state bit to turn off
1126 * wait for the display line value to settle (it usually
1127 * ends up stopping at the start of the next frame).
1130 static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
1132 struct drm_device *dev = crtc->base.dev;
1133 struct drm_i915_private *dev_priv = dev->dev_private;
1134 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
1135 enum pipe pipe = crtc->pipe;
1137 if (INTEL_INFO(dev)->gen >= 4) {
1138 int reg = PIPECONF(cpu_transcoder);
1140 /* Wait for the Pipe State to go off */
1141 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
1143 WARN(1, "pipe_off wait timed out\n");
1145 /* Wait for the display line to settle */
1146 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
1147 WARN(1, "pipe_off wait timed out\n");
1151 static const char *state_string(bool enabled)
1153 return enabled ? "on" : "off";
1156 /* Only for pre-ILK configs */
1157 void assert_pll(struct drm_i915_private *dev_priv,
1158 enum pipe pipe, bool state)
1163 val = I915_READ(DPLL(pipe));
1164 cur_state = !!(val & DPLL_VCO_ENABLE);
1165 I915_STATE_WARN(cur_state != state,
1166 "PLL state assertion failure (expected %s, current %s)\n",
1167 state_string(state), state_string(cur_state));
1170 /* XXX: the dsi pll is shared between MIPI DSI ports */
1171 static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1176 mutex_lock(&dev_priv->sb_lock);
1177 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1178 mutex_unlock(&dev_priv->sb_lock);
1180 cur_state = val & DSI_PLL_VCO_EN;
1181 I915_STATE_WARN(cur_state != state,
1182 "DSI PLL state assertion failure (expected %s, current %s)\n",
1183 state_string(state), state_string(cur_state));
1185 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1186 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1188 struct intel_shared_dpll *
1189 intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
1191 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
1193 if (crtc->config->shared_dpll < 0)
1196 return &dev_priv->shared_dplls[crtc->config->shared_dpll];
1200 void assert_shared_dpll(struct drm_i915_private *dev_priv,
1201 struct intel_shared_dpll *pll,
1205 struct intel_dpll_hw_state hw_state;
1208 "asserting DPLL %s with no DPLL\n", state_string(state)))
1211 cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
1212 I915_STATE_WARN(cur_state != state,
1213 "%s assertion failure (expected %s, current %s)\n",
1214 pll->name, state_string(state), state_string(cur_state));
1217 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1218 enum pipe pipe, bool state)
1221 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1224 if (HAS_DDI(dev_priv->dev)) {
1225 /* DDI does not have a specific FDI_TX register */
1226 u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1227 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1229 u32 val = I915_READ(FDI_TX_CTL(pipe));
1230 cur_state = !!(val & FDI_TX_ENABLE);
1232 I915_STATE_WARN(cur_state != state,
1233 "FDI TX state assertion failure (expected %s, current %s)\n",
1234 state_string(state), state_string(cur_state));
1236 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1237 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1239 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1240 enum pipe pipe, bool state)
1245 val = I915_READ(FDI_RX_CTL(pipe));
1246 cur_state = !!(val & FDI_RX_ENABLE);
1247 I915_STATE_WARN(cur_state != state,
1248 "FDI RX state assertion failure (expected %s, current %s)\n",
1249 state_string(state), state_string(cur_state));
1251 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1252 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1254 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1259 /* ILK FDI PLL is always enabled */
1260 if (INTEL_INFO(dev_priv->dev)->gen == 5)
1263 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1264 if (HAS_DDI(dev_priv->dev))
1267 val = I915_READ(FDI_TX_CTL(pipe));
1268 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1271 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1272 enum pipe pipe, bool state)
1277 val = I915_READ(FDI_RX_CTL(pipe));
1278 cur_state = !!(val & FDI_RX_PLL_ENABLE);
1279 I915_STATE_WARN(cur_state != state,
1280 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1281 state_string(state), state_string(cur_state));
1284 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1287 struct drm_device *dev = dev_priv->dev;
1290 enum pipe panel_pipe = PIPE_A;
1293 if (WARN_ON(HAS_DDI(dev)))
1296 if (HAS_PCH_SPLIT(dev)) {
1299 pp_reg = PCH_PP_CONTROL;
1300 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1302 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1303 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1304 panel_pipe = PIPE_B;
1305 /* XXX: else fix for eDP */
1306 } else if (IS_VALLEYVIEW(dev)) {
1307 /* presumably write lock depends on pipe, not port select */
1308 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1311 pp_reg = PP_CONTROL;
1312 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1313 panel_pipe = PIPE_B;
1316 val = I915_READ(pp_reg);
1317 if (!(val & PANEL_POWER_ON) ||
1318 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1321 I915_STATE_WARN(panel_pipe == pipe && locked,
1322 "panel assertion failure, pipe %c regs locked\n",
1326 static void assert_cursor(struct drm_i915_private *dev_priv,
1327 enum pipe pipe, bool state)
1329 struct drm_device *dev = dev_priv->dev;
1332 if (IS_845G(dev) || IS_I865G(dev))
1333 cur_state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
1335 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
1337 I915_STATE_WARN(cur_state != state,
1338 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1339 pipe_name(pipe), state_string(state), state_string(cur_state));
1341 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1342 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1344 void assert_pipe(struct drm_i915_private *dev_priv,
1345 enum pipe pipe, bool state)
1348 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1351 /* if we need the pipe quirk it must be always on */
1352 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1353 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1356 if (!intel_display_power_is_enabled(dev_priv,
1357 POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
1360 u32 val = I915_READ(PIPECONF(cpu_transcoder));
1361 cur_state = !!(val & PIPECONF_ENABLE);
1364 I915_STATE_WARN(cur_state != state,
1365 "pipe %c assertion failure (expected %s, current %s)\n",
1366 pipe_name(pipe), state_string(state), state_string(cur_state));
1369 static void assert_plane(struct drm_i915_private *dev_priv,
1370 enum plane plane, bool state)
1375 val = I915_READ(DSPCNTR(plane));
1376 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1377 I915_STATE_WARN(cur_state != state,
1378 "plane %c assertion failure (expected %s, current %s)\n",
1379 plane_name(plane), state_string(state), state_string(cur_state));
1382 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1383 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1385 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1388 struct drm_device *dev = dev_priv->dev;
1391 /* Primary planes are fixed to pipes on gen4+ */
1392 if (INTEL_INFO(dev)->gen >= 4) {
1393 u32 val = I915_READ(DSPCNTR(pipe));
1394 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
1395 "plane %c assertion failure, should be disabled but not\n",
1400 /* Need to check both planes against the pipe */
1401 for_each_pipe(dev_priv, i) {
1402 u32 val = I915_READ(DSPCNTR(i));
1403 enum pipe cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1404 DISPPLANE_SEL_PIPE_SHIFT;
1405 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1406 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1407 plane_name(i), pipe_name(pipe));
1411 static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1414 struct drm_device *dev = dev_priv->dev;
1417 if (INTEL_INFO(dev)->gen >= 9) {
1418 for_each_sprite(dev_priv, pipe, sprite) {
1419 u32 val = I915_READ(PLANE_CTL(pipe, sprite));
1420 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
1421 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1422 sprite, pipe_name(pipe));
1424 } else if (IS_VALLEYVIEW(dev)) {
1425 for_each_sprite(dev_priv, pipe, sprite) {
1426 u32 val = I915_READ(SPCNTR(pipe, sprite));
1427 I915_STATE_WARN(val & SP_ENABLE,
1428 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1429 sprite_name(pipe, sprite), pipe_name(pipe));
1431 } else if (INTEL_INFO(dev)->gen >= 7) {
1432 u32 val = I915_READ(SPRCTL(pipe));
1433 I915_STATE_WARN(val & SPRITE_ENABLE,
1434 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1435 plane_name(pipe), pipe_name(pipe));
1436 } else if (INTEL_INFO(dev)->gen >= 5) {
1437 u32 val = I915_READ(DVSCNTR(pipe));
1438 I915_STATE_WARN(val & DVS_ENABLE,
1439 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1440 plane_name(pipe), pipe_name(pipe));
1444 static void assert_vblank_disabled(struct drm_crtc *crtc)
1446 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1447 drm_crtc_vblank_put(crtc);
1450 static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1455 I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
1457 val = I915_READ(PCH_DREF_CONTROL);
1458 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1459 DREF_SUPERSPREAD_SOURCE_MASK));
1460 I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1463 static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1469 val = I915_READ(PCH_TRANSCONF(pipe));
1470 enabled = !!(val & TRANS_ENABLE);
1471 I915_STATE_WARN(enabled,
1472 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1476 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1477 enum pipe pipe, u32 port_sel, u32 val)
1479 if ((val & DP_PORT_EN) == 0)
1482 if (HAS_PCH_CPT(dev_priv->dev)) {
1483 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1484 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1485 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1487 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1488 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1491 if ((val & DP_PIPE_MASK) != (pipe << 30))
1497 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1498 enum pipe pipe, u32 val)
1500 if ((val & SDVO_ENABLE) == 0)
1503 if (HAS_PCH_CPT(dev_priv->dev)) {
1504 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1506 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1507 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1510 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1516 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1517 enum pipe pipe, u32 val)
1519 if ((val & LVDS_PORT_EN) == 0)
1522 if (HAS_PCH_CPT(dev_priv->dev)) {
1523 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1526 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1532 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1533 enum pipe pipe, u32 val)
1535 if ((val & ADPA_DAC_ENABLE) == 0)
1537 if (HAS_PCH_CPT(dev_priv->dev)) {
1538 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1541 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1547 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1548 enum pipe pipe, int reg, u32 port_sel)
1550 u32 val = I915_READ(reg);
1551 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1552 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1553 reg, pipe_name(pipe));
1555 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
1556 && (val & DP_PIPEB_SELECT),
1557 "IBX PCH dp port still using transcoder B\n");
1560 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1561 enum pipe pipe, int reg)
1563 u32 val = I915_READ(reg);
1564 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1565 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1566 reg, pipe_name(pipe));
1568 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
1569 && (val & SDVO_PIPE_B_SELECT),
1570 "IBX PCH hdmi port still using transcoder B\n");
1573 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1578 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1579 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1580 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1582 val = I915_READ(PCH_ADPA);
1583 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1584 "PCH VGA enabled on transcoder %c, should be disabled\n",
1587 val = I915_READ(PCH_LVDS);
1588 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1589 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1592 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1593 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1594 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
1597 static void vlv_enable_pll(struct intel_crtc *crtc,
1598 const struct intel_crtc_state *pipe_config)
1600 struct drm_device *dev = crtc->base.dev;
1601 struct drm_i915_private *dev_priv = dev->dev_private;
1602 int reg = DPLL(crtc->pipe);
1603 u32 dpll = pipe_config->dpll_hw_state.dpll;
1605 assert_pipe_disabled(dev_priv, crtc->pipe);
1607 /* No really, not for ILK+ */
1608 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
1610 /* PLL is protected by panel, make sure we can write it */
1611 if (IS_MOBILE(dev_priv->dev))
1612 assert_panel_unlocked(dev_priv, crtc->pipe);
1614 I915_WRITE(reg, dpll);
1618 if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1619 DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
1621 I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
1622 POSTING_READ(DPLL_MD(crtc->pipe));
1624 /* We do this three times for luck */
1625 I915_WRITE(reg, dpll);
1627 udelay(150); /* wait for warmup */
1628 I915_WRITE(reg, dpll);
1630 udelay(150); /* wait for warmup */
1631 I915_WRITE(reg, dpll);
1633 udelay(150); /* wait for warmup */
1636 static void chv_enable_pll(struct intel_crtc *crtc,
1637 const struct intel_crtc_state *pipe_config)
1639 struct drm_device *dev = crtc->base.dev;
1640 struct drm_i915_private *dev_priv = dev->dev_private;
1641 int pipe = crtc->pipe;
1642 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1645 assert_pipe_disabled(dev_priv, crtc->pipe);
1647 BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
1649 mutex_lock(&dev_priv->sb_lock);
1651 /* Enable back the 10bit clock to display controller */
1652 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1653 tmp |= DPIO_DCLKP_EN;
1654 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1656 mutex_unlock(&dev_priv->sb_lock);
1659 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1664 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1666 /* Check PLL is locked */
1667 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1668 DRM_ERROR("PLL %d failed to lock\n", pipe);
1670 /* not sure when this should be written */
1671 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1672 POSTING_READ(DPLL_MD(pipe));
1675 static int intel_num_dvo_pipes(struct drm_device *dev)
1677 struct intel_crtc *crtc;
1680 for_each_intel_crtc(dev, crtc)
1681 count += crtc->base.state->active &&
1682 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1687 static void i9xx_enable_pll(struct intel_crtc *crtc)
1689 struct drm_device *dev = crtc->base.dev;
1690 struct drm_i915_private *dev_priv = dev->dev_private;
1691 int reg = DPLL(crtc->pipe);
1692 u32 dpll = crtc->config->dpll_hw_state.dpll;
1694 assert_pipe_disabled(dev_priv, crtc->pipe);
1696 /* No really, not for ILK+ */
1697 BUG_ON(INTEL_INFO(dev)->gen >= 5);
1699 /* PLL is protected by panel, make sure we can write it */
1700 if (IS_MOBILE(dev) && !IS_I830(dev))
1701 assert_panel_unlocked(dev_priv, crtc->pipe);
1703 /* Enable DVO 2x clock on both PLLs if necessary */
1704 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1706 * It appears to be important that we don't enable this
1707 * for the current pipe before otherwise configuring the
1708 * PLL. No idea how this should be handled if multiple
1709 * DVO outputs are enabled simultaneosly.
1711 dpll |= DPLL_DVO_2X_MODE;
1712 I915_WRITE(DPLL(!crtc->pipe),
1713 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1717 * Apparently we need to have VGA mode enabled prior to changing
1718 * the P1/P2 dividers. Otherwise the DPLL will keep using the old
1719 * dividers, even though the register value does change.
1723 I915_WRITE(reg, dpll);
1725 /* Wait for the clocks to stabilize. */
1729 if (INTEL_INFO(dev)->gen >= 4) {
1730 I915_WRITE(DPLL_MD(crtc->pipe),
1731 crtc->config->dpll_hw_state.dpll_md);
1733 /* The pixel multiplier can only be updated once the
1734 * DPLL is enabled and the clocks are stable.
1736 * So write it again.
1738 I915_WRITE(reg, dpll);
1741 /* We do this three times for luck */
1742 I915_WRITE(reg, dpll);
1744 udelay(150); /* wait for warmup */
1745 I915_WRITE(reg, dpll);
1747 udelay(150); /* wait for warmup */
1748 I915_WRITE(reg, dpll);
1750 udelay(150); /* wait for warmup */
1754 * i9xx_disable_pll - disable a PLL
1755 * @dev_priv: i915 private structure
1756 * @pipe: pipe PLL to disable
1758 * Disable the PLL for @pipe, making sure the pipe is off first.
1760 * Note! This is for pre-ILK only.
1762 static void i9xx_disable_pll(struct intel_crtc *crtc)
1764 struct drm_device *dev = crtc->base.dev;
1765 struct drm_i915_private *dev_priv = dev->dev_private;
1766 enum pipe pipe = crtc->pipe;
1768 /* Disable DVO 2x clock on both PLLs if necessary */
1770 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1771 !intel_num_dvo_pipes(dev)) {
1772 I915_WRITE(DPLL(PIPE_B),
1773 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1774 I915_WRITE(DPLL(PIPE_A),
1775 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1778 /* Don't disable pipe or pipe PLLs if needed */
1779 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1780 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1783 /* Make sure the pipe isn't still relying on us */
1784 assert_pipe_disabled(dev_priv, pipe);
1786 I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
1787 POSTING_READ(DPLL(pipe));
1790 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1794 /* Make sure the pipe isn't still relying on us */
1795 assert_pipe_disabled(dev_priv, pipe);
1798 * Leave integrated clock source and reference clock enabled for pipe B.
1799 * The latter is needed for VGA hotplug / manual detection.
1801 val = DPLL_VGA_MODE_DIS;
1803 val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REF_CLK_ENABLE_VLV;
1804 I915_WRITE(DPLL(pipe), val);
1805 POSTING_READ(DPLL(pipe));
1809 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1811 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1814 /* Make sure the pipe isn't still relying on us */
1815 assert_pipe_disabled(dev_priv, pipe);
1817 /* Set PLL en = 0 */
1818 val = DPLL_SSC_REF_CLK_CHV |
1819 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1821 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1822 I915_WRITE(DPLL(pipe), val);
1823 POSTING_READ(DPLL(pipe));
1825 mutex_lock(&dev_priv->sb_lock);
1827 /* Disable 10bit clock to display controller */
1828 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1829 val &= ~DPIO_DCLKP_EN;
1830 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1832 mutex_unlock(&dev_priv->sb_lock);
1835 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1836 struct intel_digital_port *dport,
1837 unsigned int expected_mask)
1842 switch (dport->port) {
1844 port_mask = DPLL_PORTB_READY_MASK;
1848 port_mask = DPLL_PORTC_READY_MASK;
1850 expected_mask <<= 4;
1853 port_mask = DPLL_PORTD_READY_MASK;
1854 dpll_reg = DPIO_PHY_STATUS;
1860 if (wait_for((I915_READ(dpll_reg) & port_mask) == expected_mask, 1000))
1861 WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
1862 port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
1865 static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
1867 struct drm_device *dev = crtc->base.dev;
1868 struct drm_i915_private *dev_priv = dev->dev_private;
1869 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1871 if (WARN_ON(pll == NULL))
1874 WARN_ON(!pll->config.crtc_mask);
1875 if (pll->active == 0) {
1876 DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
1878 assert_shared_dpll_disabled(dev_priv, pll);
1880 pll->mode_set(dev_priv, pll);
1885 * intel_enable_shared_dpll - enable PCH PLL
1886 * @dev_priv: i915 private structure
1887 * @pipe: pipe PLL to enable
1889 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1890 * drives the transcoder clock.
1892 static void intel_enable_shared_dpll(struct intel_crtc *crtc)
1894 struct drm_device *dev = crtc->base.dev;
1895 struct drm_i915_private *dev_priv = dev->dev_private;
1896 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1898 if (WARN_ON(pll == NULL))
1901 if (WARN_ON(pll->config.crtc_mask == 0))
1904 DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
1905 pll->name, pll->active, pll->on,
1906 crtc->base.base.id);
1908 if (pll->active++) {
1910 assert_shared_dpll_enabled(dev_priv, pll);
1915 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
1917 DRM_DEBUG_KMS("enabling %s\n", pll->name);
1918 pll->enable(dev_priv, pll);
1922 static void intel_disable_shared_dpll(struct intel_crtc *crtc)
1924 struct drm_device *dev = crtc->base.dev;
1925 struct drm_i915_private *dev_priv = dev->dev_private;
1926 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1928 /* PCH only available on ILK+ */
1929 if (INTEL_INFO(dev)->gen < 5)
1935 if (WARN_ON(!(pll->config.crtc_mask & (1 << drm_crtc_index(&crtc->base)))))
1938 DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
1939 pll->name, pll->active, pll->on,
1940 crtc->base.base.id);
1942 if (WARN_ON(pll->active == 0)) {
1943 assert_shared_dpll_disabled(dev_priv, pll);
1947 assert_shared_dpll_enabled(dev_priv, pll);
1952 DRM_DEBUG_KMS("disabling %s\n", pll->name);
1953 pll->disable(dev_priv, pll);
1956 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
1959 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1962 struct drm_device *dev = dev_priv->dev;
1963 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1964 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1965 uint32_t reg, val, pipeconf_val;
1967 /* PCH only available on ILK+ */
1968 BUG_ON(!HAS_PCH_SPLIT(dev));
1970 /* Make sure PCH DPLL is enabled */
1971 assert_shared_dpll_enabled(dev_priv,
1972 intel_crtc_to_shared_dpll(intel_crtc));
1974 /* FDI must be feeding us bits for PCH ports */
1975 assert_fdi_tx_enabled(dev_priv, pipe);
1976 assert_fdi_rx_enabled(dev_priv, pipe);
1978 if (HAS_PCH_CPT(dev)) {
1979 /* Workaround: Set the timing override bit before enabling the
1980 * pch transcoder. */
1981 reg = TRANS_CHICKEN2(pipe);
1982 val = I915_READ(reg);
1983 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1984 I915_WRITE(reg, val);
1987 reg = PCH_TRANSCONF(pipe);
1988 val = I915_READ(reg);
1989 pipeconf_val = I915_READ(PIPECONF(pipe));
1991 if (HAS_PCH_IBX(dev_priv->dev)) {
1993 * Make the BPC in transcoder be consistent with
1994 * that in pipeconf reg. For HDMI we must use 8bpc
1995 * here for both 8bpc and 12bpc.
1997 val &= ~PIPECONF_BPC_MASK;
1998 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
1999 val |= PIPECONF_8BPC;
2001 val |= pipeconf_val & PIPECONF_BPC_MASK;
2004 val &= ~TRANS_INTERLACE_MASK;
2005 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
2006 if (HAS_PCH_IBX(dev_priv->dev) &&
2007 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
2008 val |= TRANS_LEGACY_INTERLACED_ILK;
2010 val |= TRANS_INTERLACED;
2012 val |= TRANS_PROGRESSIVE;
2014 I915_WRITE(reg, val | TRANS_ENABLE);
2015 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
2016 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
2019 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
2020 enum transcoder cpu_transcoder)
2022 u32 val, pipeconf_val;
2024 /* PCH only available on ILK+ */
2025 BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
2027 /* FDI must be feeding us bits for PCH ports */
2028 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
2029 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
2031 /* Workaround: set timing override bit. */
2032 val = I915_READ(TRANS_CHICKEN2(PIPE_A));
2033 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
2034 I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
2037 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
2039 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
2040 PIPECONF_INTERLACED_ILK)
2041 val |= TRANS_INTERLACED;
2043 val |= TRANS_PROGRESSIVE;
2045 I915_WRITE(LPT_TRANSCONF, val);
2046 if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
2047 DRM_ERROR("Failed to enable PCH transcoder\n");
2050 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
2053 struct drm_device *dev = dev_priv->dev;
2056 /* FDI relies on the transcoder */
2057 assert_fdi_tx_disabled(dev_priv, pipe);
2058 assert_fdi_rx_disabled(dev_priv, pipe);
2060 /* Ports must be off as well */
2061 assert_pch_ports_disabled(dev_priv, pipe);
2063 reg = PCH_TRANSCONF(pipe);
2064 val = I915_READ(reg);
2065 val &= ~TRANS_ENABLE;
2066 I915_WRITE(reg, val);
2067 /* wait for PCH transcoder off, transcoder state */
2068 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
2069 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
2071 if (!HAS_PCH_IBX(dev)) {
2072 /* Workaround: Clear the timing override chicken bit again. */
2073 reg = TRANS_CHICKEN2(pipe);
2074 val = I915_READ(reg);
2075 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2076 I915_WRITE(reg, val);
2080 static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
2084 val = I915_READ(LPT_TRANSCONF);
2085 val &= ~TRANS_ENABLE;
2086 I915_WRITE(LPT_TRANSCONF, val);
2087 /* wait for PCH transcoder off, transcoder state */
2088 if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
2089 DRM_ERROR("Failed to disable PCH transcoder\n");
2091 /* Workaround: clear timing override bit. */
2092 val = I915_READ(TRANS_CHICKEN2(PIPE_A));
2093 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2094 I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
2098 * intel_enable_pipe - enable a pipe, asserting requirements
2099 * @crtc: crtc responsible for the pipe
2101 * Enable @crtc's pipe, making sure that various hardware specific requirements
2102 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
2104 static void intel_enable_pipe(struct intel_crtc *crtc)
2106 struct drm_device *dev = crtc->base.dev;
2107 struct drm_i915_private *dev_priv = dev->dev_private;
2108 enum pipe pipe = crtc->pipe;
2109 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
2111 enum pipe pch_transcoder;
2115 DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
2117 assert_planes_disabled(dev_priv, pipe);
2118 assert_cursor_disabled(dev_priv, pipe);
2119 assert_sprites_disabled(dev_priv, pipe);
2121 if (HAS_PCH_LPT(dev_priv->dev))
2122 pch_transcoder = TRANSCODER_A;
2124 pch_transcoder = pipe;
2127 * A pipe without a PLL won't actually be able to drive bits from
2128 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2131 if (HAS_GMCH_DISPLAY(dev_priv->dev))
2132 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
2133 assert_dsi_pll_enabled(dev_priv);
2135 assert_pll_enabled(dev_priv, pipe);
2137 if (crtc->config->has_pch_encoder) {
2138 /* if driving the PCH, we need FDI enabled */
2139 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
2140 assert_fdi_tx_pll_enabled(dev_priv,
2141 (enum pipe) cpu_transcoder);
2143 /* FIXME: assert CPU port conditions for SNB+ */
2146 reg = PIPECONF(cpu_transcoder);
2147 val = I915_READ(reg);
2148 if (val & PIPECONF_ENABLE) {
2149 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2150 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
2154 I915_WRITE(reg, val | PIPECONF_ENABLE);
2159 * intel_disable_pipe - disable a pipe, asserting requirements
2160 * @crtc: crtc whose pipes is to be disabled
2162 * Disable the pipe of @crtc, making sure that various hardware
2163 * specific requirements are met, if applicable, e.g. plane
2164 * disabled, panel fitter off, etc.
2166 * Will wait until the pipe has shut down before returning.
2168 static void intel_disable_pipe(struct intel_crtc *crtc)
2170 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
2171 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
2172 enum pipe pipe = crtc->pipe;
2176 DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
2179 * Make sure planes won't keep trying to pump pixels to us,
2180 * or we might hang the display.
2182 assert_planes_disabled(dev_priv, pipe);
2183 assert_cursor_disabled(dev_priv, pipe);
2184 assert_sprites_disabled(dev_priv, pipe);
2186 reg = PIPECONF(cpu_transcoder);
2187 val = I915_READ(reg);
2188 if ((val & PIPECONF_ENABLE) == 0)
2192 * Double wide has implications for planes
2193 * so best keep it disabled when not needed.
2195 if (crtc->config->double_wide)
2196 val &= ~PIPECONF_DOUBLE_WIDE;
2198 /* Don't disable pipe or pipe PLLs if needed */
2199 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2200 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
2201 val &= ~PIPECONF_ENABLE;
2203 I915_WRITE(reg, val);
2204 if ((val & PIPECONF_ENABLE) == 0)
2205 intel_wait_for_pipe_off(crtc);
2208 static bool need_vtd_wa(struct drm_device *dev)
2210 #ifdef CONFIG_INTEL_IOMMU
2211 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2218 intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
2219 uint64_t fb_format_modifier, unsigned int plane)
2221 unsigned int tile_height;
2222 uint32_t pixel_bytes;
2224 switch (fb_format_modifier) {
2225 case DRM_FORMAT_MOD_NONE:
2228 case I915_FORMAT_MOD_X_TILED:
2229 tile_height = IS_GEN2(dev) ? 16 : 8;
2231 case I915_FORMAT_MOD_Y_TILED:
2234 case I915_FORMAT_MOD_Yf_TILED:
2235 pixel_bytes = drm_format_plane_cpp(pixel_format, plane);
2236 switch (pixel_bytes) {
2250 "128-bit pixels are not supported for display!");
2256 MISSING_CASE(fb_format_modifier);
2265 intel_fb_align_height(struct drm_device *dev, unsigned int height,
2266 uint32_t pixel_format, uint64_t fb_format_modifier)
2268 return ALIGN(height, intel_tile_height(dev, pixel_format,
2269 fb_format_modifier, 0));
2273 intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
2274 const struct drm_plane_state *plane_state)
2276 struct intel_rotation_info *info = &view->rotation_info;
2277 unsigned int tile_height, tile_pitch;
2279 *view = i915_ggtt_view_normal;
2284 if (!intel_rotation_90_or_270(plane_state->rotation))
2287 *view = i915_ggtt_view_rotated;
2289 info->height = fb->height;
2290 info->pixel_format = fb->pixel_format;
2291 info->pitch = fb->pitches[0];
2292 info->uv_offset = fb->offsets[1];
2293 info->fb_modifier = fb->modifier[0];
2295 tile_height = intel_tile_height(fb->dev, fb->pixel_format,
2296 fb->modifier[0], 0);
2297 tile_pitch = PAGE_SIZE / tile_height;
2298 info->width_pages = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
2299 info->height_pages = DIV_ROUND_UP(fb->height, tile_height);
2300 info->size = info->width_pages * info->height_pages * PAGE_SIZE;
2302 if (info->pixel_format == DRM_FORMAT_NV12) {
2303 tile_height = intel_tile_height(fb->dev, fb->pixel_format,
2304 fb->modifier[0], 1);
2305 tile_pitch = PAGE_SIZE / tile_height;
2306 info->width_pages_uv = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
2307 info->height_pages_uv = DIV_ROUND_UP(fb->height / 2,
2309 info->size_uv = info->width_pages_uv * info->height_pages_uv *
2316 static unsigned int intel_linear_alignment(struct drm_i915_private *dev_priv)
2318 if (INTEL_INFO(dev_priv)->gen >= 9)
2320 else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
2321 IS_VALLEYVIEW(dev_priv))
2323 else if (INTEL_INFO(dev_priv)->gen >= 4)
2330 intel_pin_and_fence_fb_obj(struct drm_plane *plane,
2331 struct drm_framebuffer *fb,
2332 const struct drm_plane_state *plane_state,
2333 struct intel_engine_cs *pipelined,
2334 struct drm_i915_gem_request **pipelined_request)
2336 struct drm_device *dev = fb->dev;
2337 struct drm_i915_private *dev_priv = dev->dev_private;
2338 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2339 struct i915_ggtt_view view;
2343 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2345 switch (fb->modifier[0]) {
2346 case DRM_FORMAT_MOD_NONE:
2347 alignment = intel_linear_alignment(dev_priv);
2349 case I915_FORMAT_MOD_X_TILED:
2350 if (INTEL_INFO(dev)->gen >= 9)
2351 alignment = 256 * 1024;
2353 /* pin() will align the object as required by fence */
2357 case I915_FORMAT_MOD_Y_TILED:
2358 case I915_FORMAT_MOD_Yf_TILED:
2359 if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
2360 "Y tiling bo slipped through, driver bug!\n"))
2362 alignment = 1 * 1024 * 1024;
2365 MISSING_CASE(fb->modifier[0]);
2369 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2373 /* Note that the w/a also requires 64 PTE of padding following the
2374 * bo. We currently fill all unused PTE with the shadow page and so
2375 * we should always have valid PTE following the scanout preventing
2378 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2379 alignment = 256 * 1024;
2382 * Global gtt pte registers are special registers which actually forward
2383 * writes to a chunk of system memory. Which means that there is no risk
2384 * that the register values disappear as soon as we call
2385 * intel_runtime_pm_put(), so it is correct to wrap only the
2386 * pin/unpin/fence and not more.
2388 intel_runtime_pm_get(dev_priv);
2390 dev_priv->mm.interruptible = false;
2391 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
2392 pipelined_request, &view);
2394 goto err_interruptible;
2396 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2397 * fence, whereas 965+ only requires a fence if using
2398 * framebuffer compression. For simplicity, we always install
2399 * a fence as the cost is not that onerous.
2401 if (view.type == I915_GGTT_VIEW_NORMAL) {
2402 ret = i915_gem_object_get_fence(obj);
2403 if (ret == -EDEADLK) {
2405 * -EDEADLK means there are no free fences
2408 * This is propagated to atomic, but it uses
2409 * -EDEADLK to force a locking recovery, so
2410 * change the returned error to -EBUSY.
2417 i915_gem_object_pin_fence(obj);
2420 dev_priv->mm.interruptible = true;
2421 intel_runtime_pm_put(dev_priv);
2425 i915_gem_object_unpin_from_display_plane(obj, &view);
2427 dev_priv->mm.interruptible = true;
2428 intel_runtime_pm_put(dev_priv);
2432 static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
2433 const struct drm_plane_state *plane_state)
2435 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2436 struct i915_ggtt_view view;
2439 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2441 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2442 WARN_ONCE(ret, "Couldn't get view from plane state!");
2444 if (view.type == I915_GGTT_VIEW_NORMAL)
2445 i915_gem_object_unpin_fence(obj);
2447 i915_gem_object_unpin_from_display_plane(obj, &view);
2450 /* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
2451 * is assumed to be a power-of-two. */
2452 unsigned long intel_gen4_compute_page_offset(struct drm_i915_private *dev_priv,
2454 unsigned int tiling_mode,
2458 if (tiling_mode != I915_TILING_NONE) {
2459 unsigned int tile_rows, tiles;
2464 tiles = *x / (512/cpp);
2467 return tile_rows * pitch * 8 + tiles * 4096;
2469 unsigned int alignment = intel_linear_alignment(dev_priv) - 1;
2470 unsigned int offset;
2472 offset = *y * pitch + *x * cpp;
2473 *y = (offset & alignment) / pitch;
2474 *x = ((offset & alignment) - *y * pitch) / cpp;
2475 return offset & ~alignment;
2479 static int i9xx_format_to_fourcc(int format)
2482 case DISPPLANE_8BPP:
2483 return DRM_FORMAT_C8;
2484 case DISPPLANE_BGRX555:
2485 return DRM_FORMAT_XRGB1555;
2486 case DISPPLANE_BGRX565:
2487 return DRM_FORMAT_RGB565;
2489 case DISPPLANE_BGRX888:
2490 return DRM_FORMAT_XRGB8888;
2491 case DISPPLANE_RGBX888:
2492 return DRM_FORMAT_XBGR8888;
2493 case DISPPLANE_BGRX101010:
2494 return DRM_FORMAT_XRGB2101010;
2495 case DISPPLANE_RGBX101010:
2496 return DRM_FORMAT_XBGR2101010;
2500 static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2503 case PLANE_CTL_FORMAT_RGB_565:
2504 return DRM_FORMAT_RGB565;
2506 case PLANE_CTL_FORMAT_XRGB_8888:
2509 return DRM_FORMAT_ABGR8888;
2511 return DRM_FORMAT_XBGR8888;
2514 return DRM_FORMAT_ARGB8888;
2516 return DRM_FORMAT_XRGB8888;
2518 case PLANE_CTL_FORMAT_XRGB_2101010:
2520 return DRM_FORMAT_XBGR2101010;
2522 return DRM_FORMAT_XRGB2101010;
2527 intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2528 struct intel_initial_plane_config *plane_config)
2530 struct drm_device *dev = crtc->base.dev;
2531 struct drm_i915_private *dev_priv = to_i915(dev);
2532 struct drm_i915_gem_object *obj = NULL;
2533 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2534 struct drm_framebuffer *fb = &plane_config->fb->base;
2535 u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2536 u32 size_aligned = round_up(plane_config->base + plane_config->size,
2539 size_aligned -= base_aligned;
2541 if (plane_config->size == 0)
2544 /* If the FB is too big, just don't use it since fbdev is not very
2545 * important and we should probably use that space with FBC or other
2547 if (size_aligned * 2 > dev_priv->gtt.stolen_usable_size)
2550 obj = i915_gem_object_create_stolen_for_preallocated(dev,
2557 obj->tiling_mode = plane_config->tiling;
2558 if (obj->tiling_mode == I915_TILING_X)
2559 obj->stride = fb->pitches[0];
2561 mode_cmd.pixel_format = fb->pixel_format;
2562 mode_cmd.width = fb->width;
2563 mode_cmd.height = fb->height;
2564 mode_cmd.pitches[0] = fb->pitches[0];
2565 mode_cmd.modifier[0] = fb->modifier[0];
2566 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2568 mutex_lock(&dev->struct_mutex);
2569 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
2571 DRM_DEBUG_KMS("intel fb init failed\n");
2574 mutex_unlock(&dev->struct_mutex);
2576 DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
2580 drm_gem_object_unreference(&obj->base);
2581 mutex_unlock(&dev->struct_mutex);
2585 /* Update plane->state->fb to match plane->fb after driver-internal updates */
2587 update_state_fb(struct drm_plane *plane)
2589 if (plane->fb == plane->state->fb)
2592 if (plane->state->fb)
2593 drm_framebuffer_unreference(plane->state->fb);
2594 plane->state->fb = plane->fb;
2595 if (plane->state->fb)
2596 drm_framebuffer_reference(plane->state->fb);
2600 intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2601 struct intel_initial_plane_config *plane_config)
2603 struct drm_device *dev = intel_crtc->base.dev;
2604 struct drm_i915_private *dev_priv = dev->dev_private;
2606 struct intel_crtc *i;
2607 struct drm_i915_gem_object *obj;
2608 struct drm_plane *primary = intel_crtc->base.primary;
2609 struct drm_plane_state *plane_state = primary->state;
2610 struct drm_framebuffer *fb;
2612 if (!plane_config->fb)
2615 if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
2616 fb = &plane_config->fb->base;
2620 kfree(plane_config->fb);
2623 * Failed to alloc the obj, check to see if we should share
2624 * an fb with another CRTC instead
2626 for_each_crtc(dev, c) {
2627 i = to_intel_crtc(c);
2629 if (c == &intel_crtc->base)
2635 fb = c->primary->fb;
2639 obj = intel_fb_obj(fb);
2640 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
2641 drm_framebuffer_reference(fb);
2649 plane_state->src_x = 0;
2650 plane_state->src_y = 0;
2651 plane_state->src_w = fb->width << 16;
2652 plane_state->src_h = fb->height << 16;
2654 plane_state->crtc_x = 0;
2655 plane_state->crtc_y = 0;
2656 plane_state->crtc_w = fb->width;
2657 plane_state->crtc_h = fb->height;
2659 obj = intel_fb_obj(fb);
2660 if (obj->tiling_mode != I915_TILING_NONE)
2661 dev_priv->preserve_bios_swizzle = true;
2663 drm_framebuffer_reference(fb);
2664 primary->fb = primary->state->fb = fb;
2665 primary->crtc = primary->state->crtc = &intel_crtc->base;
2666 intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
2667 obj->frontbuffer_bits |= to_intel_plane(primary)->frontbuffer_bit;
2670 static void i9xx_update_primary_plane(struct drm_crtc *crtc,
2671 struct drm_framebuffer *fb,
2674 struct drm_device *dev = crtc->dev;
2675 struct drm_i915_private *dev_priv = dev->dev_private;
2676 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2677 struct drm_plane *primary = crtc->primary;
2678 bool visible = to_intel_plane_state(primary->state)->visible;
2679 struct drm_i915_gem_object *obj;
2680 int plane = intel_crtc->plane;
2681 unsigned long linear_offset;
2683 u32 reg = DSPCNTR(plane);
2686 if (!visible || !fb) {
2688 if (INTEL_INFO(dev)->gen >= 4)
2689 I915_WRITE(DSPSURF(plane), 0);
2691 I915_WRITE(DSPADDR(plane), 0);
2696 obj = intel_fb_obj(fb);
2697 if (WARN_ON(obj == NULL))
2700 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2702 dspcntr = DISPPLANE_GAMMA_ENABLE;
2704 dspcntr |= DISPLAY_PLANE_ENABLE;
2706 if (INTEL_INFO(dev)->gen < 4) {
2707 if (intel_crtc->pipe == PIPE_B)
2708 dspcntr |= DISPPLANE_SEL_PIPE_B;
2710 /* pipesrc and dspsize control the size that is scaled from,
2711 * which should always be the user's requested size.
2713 I915_WRITE(DSPSIZE(plane),
2714 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2715 (intel_crtc->config->pipe_src_w - 1));
2716 I915_WRITE(DSPPOS(plane), 0);
2717 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2718 I915_WRITE(PRIMSIZE(plane),
2719 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2720 (intel_crtc->config->pipe_src_w - 1));
2721 I915_WRITE(PRIMPOS(plane), 0);
2722 I915_WRITE(PRIMCNSTALPHA(plane), 0);
2725 switch (fb->pixel_format) {
2727 dspcntr |= DISPPLANE_8BPP;
2729 case DRM_FORMAT_XRGB1555:
2730 dspcntr |= DISPPLANE_BGRX555;
2732 case DRM_FORMAT_RGB565:
2733 dspcntr |= DISPPLANE_BGRX565;
2735 case DRM_FORMAT_XRGB8888:
2736 dspcntr |= DISPPLANE_BGRX888;
2738 case DRM_FORMAT_XBGR8888:
2739 dspcntr |= DISPPLANE_RGBX888;
2741 case DRM_FORMAT_XRGB2101010:
2742 dspcntr |= DISPPLANE_BGRX101010;
2744 case DRM_FORMAT_XBGR2101010:
2745 dspcntr |= DISPPLANE_RGBX101010;
2751 if (INTEL_INFO(dev)->gen >= 4 &&
2752 obj->tiling_mode != I915_TILING_NONE)
2753 dspcntr |= DISPPLANE_TILED;
2756 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2758 linear_offset = y * fb->pitches[0] + x * pixel_size;
2760 if (INTEL_INFO(dev)->gen >= 4) {
2761 intel_crtc->dspaddr_offset =
2762 intel_gen4_compute_page_offset(dev_priv,
2763 &x, &y, obj->tiling_mode,
2766 linear_offset -= intel_crtc->dspaddr_offset;
2768 intel_crtc->dspaddr_offset = linear_offset;
2771 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2772 dspcntr |= DISPPLANE_ROTATE_180;
2774 x += (intel_crtc->config->pipe_src_w - 1);
2775 y += (intel_crtc->config->pipe_src_h - 1);
2777 /* Finding the last pixel of the last line of the display
2778 data and adding to linear_offset*/
2780 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2781 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2784 intel_crtc->adjusted_x = x;
2785 intel_crtc->adjusted_y = y;
2787 I915_WRITE(reg, dspcntr);
2789 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2790 if (INTEL_INFO(dev)->gen >= 4) {
2791 I915_WRITE(DSPSURF(plane),
2792 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2793 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2794 I915_WRITE(DSPLINOFF(plane), linear_offset);
2796 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
2800 static void ironlake_update_primary_plane(struct drm_crtc *crtc,
2801 struct drm_framebuffer *fb,
2804 struct drm_device *dev = crtc->dev;
2805 struct drm_i915_private *dev_priv = dev->dev_private;
2806 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2807 struct drm_plane *primary = crtc->primary;
2808 bool visible = to_intel_plane_state(primary->state)->visible;
2809 struct drm_i915_gem_object *obj;
2810 int plane = intel_crtc->plane;
2811 unsigned long linear_offset;
2813 u32 reg = DSPCNTR(plane);
2816 if (!visible || !fb) {
2818 I915_WRITE(DSPSURF(plane), 0);
2823 obj = intel_fb_obj(fb);
2824 if (WARN_ON(obj == NULL))
2827 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2829 dspcntr = DISPPLANE_GAMMA_ENABLE;
2831 dspcntr |= DISPLAY_PLANE_ENABLE;
2833 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2834 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
2836 switch (fb->pixel_format) {
2838 dspcntr |= DISPPLANE_8BPP;
2840 case DRM_FORMAT_RGB565:
2841 dspcntr |= DISPPLANE_BGRX565;
2843 case DRM_FORMAT_XRGB8888:
2844 dspcntr |= DISPPLANE_BGRX888;
2846 case DRM_FORMAT_XBGR8888:
2847 dspcntr |= DISPPLANE_RGBX888;
2849 case DRM_FORMAT_XRGB2101010:
2850 dspcntr |= DISPPLANE_BGRX101010;
2852 case DRM_FORMAT_XBGR2101010:
2853 dspcntr |= DISPPLANE_RGBX101010;
2859 if (obj->tiling_mode != I915_TILING_NONE)
2860 dspcntr |= DISPPLANE_TILED;
2862 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
2863 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2865 linear_offset = y * fb->pitches[0] + x * pixel_size;
2866 intel_crtc->dspaddr_offset =
2867 intel_gen4_compute_page_offset(dev_priv,
2868 &x, &y, obj->tiling_mode,
2871 linear_offset -= intel_crtc->dspaddr_offset;
2872 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2873 dspcntr |= DISPPLANE_ROTATE_180;
2875 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
2876 x += (intel_crtc->config->pipe_src_w - 1);
2877 y += (intel_crtc->config->pipe_src_h - 1);
2879 /* Finding the last pixel of the last line of the display
2880 data and adding to linear_offset*/
2882 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2883 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2887 intel_crtc->adjusted_x = x;
2888 intel_crtc->adjusted_y = y;
2890 I915_WRITE(reg, dspcntr);
2892 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2893 I915_WRITE(DSPSURF(plane),
2894 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2895 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2896 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2898 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2899 I915_WRITE(DSPLINOFF(plane), linear_offset);
2904 u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
2905 uint32_t pixel_format)
2907 u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2910 * The stride is either expressed as a multiple of 64 bytes
2911 * chunks for linear buffers or in number of tiles for tiled
2914 switch (fb_modifier) {
2915 case DRM_FORMAT_MOD_NONE:
2917 case I915_FORMAT_MOD_X_TILED:
2918 if (INTEL_INFO(dev)->gen == 2)
2921 case I915_FORMAT_MOD_Y_TILED:
2922 /* No need to check for old gens and Y tiling since this is
2923 * about the display engine and those will be blocked before
2927 case I915_FORMAT_MOD_Yf_TILED:
2928 if (bits_per_pixel == 8)
2933 MISSING_CASE(fb_modifier);
2938 unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
2939 struct drm_i915_gem_object *obj,
2942 const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
2943 struct i915_vma *vma;
2944 unsigned char *offset;
2946 if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
2947 view = &i915_ggtt_view_rotated;
2949 vma = i915_gem_obj_to_ggtt_view(obj, view);
2950 if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n",
2954 offset = (unsigned char *)vma->node.start;
2957 offset += vma->ggtt_view.rotation_info.uv_start_page *
2961 return (unsigned long)offset;
2964 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
2966 struct drm_device *dev = intel_crtc->base.dev;
2967 struct drm_i915_private *dev_priv = dev->dev_private;
2969 I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
2970 I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
2971 I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
2975 * This function detaches (aka. unbinds) unused scalers in hardware
2977 static void skl_detach_scalers(struct intel_crtc *intel_crtc)
2979 struct intel_crtc_scaler_state *scaler_state;
2982 scaler_state = &intel_crtc->config->scaler_state;
2984 /* loop through and disable scalers that aren't in use */
2985 for (i = 0; i < intel_crtc->num_scalers; i++) {
2986 if (!scaler_state->scalers[i].in_use)
2987 skl_detach_scaler(intel_crtc, i);
2991 u32 skl_plane_ctl_format(uint32_t pixel_format)
2993 switch (pixel_format) {
2995 return PLANE_CTL_FORMAT_INDEXED;
2996 case DRM_FORMAT_RGB565:
2997 return PLANE_CTL_FORMAT_RGB_565;
2998 case DRM_FORMAT_XBGR8888:
2999 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
3000 case DRM_FORMAT_XRGB8888:
3001 return PLANE_CTL_FORMAT_XRGB_8888;
3003 * XXX: For ARBG/ABGR formats we default to expecting scanout buffers
3004 * to be already pre-multiplied. We need to add a knob (or a different
3005 * DRM_FORMAT) for user-space to configure that.
3007 case DRM_FORMAT_ABGR8888:
3008 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
3009 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
3010 case DRM_FORMAT_ARGB8888:
3011 return PLANE_CTL_FORMAT_XRGB_8888 |
3012 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
3013 case DRM_FORMAT_XRGB2101010:
3014 return PLANE_CTL_FORMAT_XRGB_2101010;
3015 case DRM_FORMAT_XBGR2101010:
3016 return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
3017 case DRM_FORMAT_YUYV:
3018 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
3019 case DRM_FORMAT_YVYU:
3020 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
3021 case DRM_FORMAT_UYVY:
3022 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
3023 case DRM_FORMAT_VYUY:
3024 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
3026 MISSING_CASE(pixel_format);
3032 u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
3034 switch (fb_modifier) {
3035 case DRM_FORMAT_MOD_NONE:
3037 case I915_FORMAT_MOD_X_TILED:
3038 return PLANE_CTL_TILED_X;
3039 case I915_FORMAT_MOD_Y_TILED:
3040 return PLANE_CTL_TILED_Y;
3041 case I915_FORMAT_MOD_Yf_TILED:
3042 return PLANE_CTL_TILED_YF;
3044 MISSING_CASE(fb_modifier);
3050 u32 skl_plane_ctl_rotation(unsigned int rotation)
3053 case BIT(DRM_ROTATE_0):
3056 * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
3057 * while i915 HW rotation is clockwise, thats why this swapping.
3059 case BIT(DRM_ROTATE_90):
3060 return PLANE_CTL_ROTATE_270;
3061 case BIT(DRM_ROTATE_180):
3062 return PLANE_CTL_ROTATE_180;
3063 case BIT(DRM_ROTATE_270):
3064 return PLANE_CTL_ROTATE_90;
3066 MISSING_CASE(rotation);
3072 static void skylake_update_primary_plane(struct drm_crtc *crtc,
3073 struct drm_framebuffer *fb,
3076 struct drm_device *dev = crtc->dev;
3077 struct drm_i915_private *dev_priv = dev->dev_private;
3078 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3079 struct drm_plane *plane = crtc->primary;
3080 bool visible = to_intel_plane_state(plane->state)->visible;
3081 struct drm_i915_gem_object *obj;
3082 int pipe = intel_crtc->pipe;
3083 u32 plane_ctl, stride_div, stride;
3084 u32 tile_height, plane_offset, plane_size;
3085 unsigned int rotation;
3086 int x_offset, y_offset;
3087 unsigned long surf_addr;
3088 struct intel_crtc_state *crtc_state = intel_crtc->config;
3089 struct intel_plane_state *plane_state;
3090 int src_x = 0, src_y = 0, src_w = 0, src_h = 0;
3091 int dst_x = 0, dst_y = 0, dst_w = 0, dst_h = 0;
3094 plane_state = to_intel_plane_state(plane->state);
3096 if (!visible || !fb) {
3097 I915_WRITE(PLANE_CTL(pipe, 0), 0);
3098 I915_WRITE(PLANE_SURF(pipe, 0), 0);
3099 POSTING_READ(PLANE_CTL(pipe, 0));
3103 plane_ctl = PLANE_CTL_ENABLE |
3104 PLANE_CTL_PIPE_GAMMA_ENABLE |
3105 PLANE_CTL_PIPE_CSC_ENABLE;
3107 plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
3108 plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
3109 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3111 rotation = plane->state->rotation;
3112 plane_ctl |= skl_plane_ctl_rotation(rotation);
3114 obj = intel_fb_obj(fb);
3115 stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
3117 surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj, 0);
3119 WARN_ON(drm_rect_width(&plane_state->src) == 0);
3121 scaler_id = plane_state->scaler_id;
3122 src_x = plane_state->src.x1 >> 16;
3123 src_y = plane_state->src.y1 >> 16;
3124 src_w = drm_rect_width(&plane_state->src) >> 16;
3125 src_h = drm_rect_height(&plane_state->src) >> 16;
3126 dst_x = plane_state->dst.x1;
3127 dst_y = plane_state->dst.y1;
3128 dst_w = drm_rect_width(&plane_state->dst);
3129 dst_h = drm_rect_height(&plane_state->dst);
3131 WARN_ON(x != src_x || y != src_y);
3133 if (intel_rotation_90_or_270(rotation)) {
3134 /* stride = Surface height in tiles */
3135 tile_height = intel_tile_height(dev, fb->pixel_format,
3136 fb->modifier[0], 0);
3137 stride = DIV_ROUND_UP(fb->height, tile_height);
3138 x_offset = stride * tile_height - y - src_h;
3140 plane_size = (src_w - 1) << 16 | (src_h - 1);
3142 stride = fb->pitches[0] / stride_div;
3145 plane_size = (src_h - 1) << 16 | (src_w - 1);
3147 plane_offset = y_offset << 16 | x_offset;
3149 intel_crtc->adjusted_x = x_offset;
3150 intel_crtc->adjusted_y = y_offset;
3152 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
3153 I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
3154 I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
3155 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
3157 if (scaler_id >= 0) {
3158 uint32_t ps_ctrl = 0;
3160 WARN_ON(!dst_w || !dst_h);
3161 ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
3162 crtc_state->scaler_state.scalers[scaler_id].mode;
3163 I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
3164 I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
3165 I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
3166 I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
3167 I915_WRITE(PLANE_POS(pipe, 0), 0);
3169 I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
3172 I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
3174 POSTING_READ(PLANE_SURF(pipe, 0));
3177 /* Assume fb object is pinned & idle & fenced and just update base pointers */
3179 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
3180 int x, int y, enum mode_set_atomic state)
3182 struct drm_device *dev = crtc->dev;
3183 struct drm_i915_private *dev_priv = dev->dev_private;
3185 if (dev_priv->fbc.disable_fbc)
3186 dev_priv->fbc.disable_fbc(dev_priv);
3188 dev_priv->display.update_primary_plane(crtc, fb, x, y);
3193 static void intel_complete_page_flips(struct drm_device *dev)
3195 struct drm_crtc *crtc;
3197 for_each_crtc(dev, crtc) {
3198 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3199 enum plane plane = intel_crtc->plane;
3201 intel_prepare_page_flip(dev, plane);
3202 intel_finish_page_flip_plane(dev, plane);
3206 static void intel_update_primary_planes(struct drm_device *dev)
3208 struct drm_crtc *crtc;
3210 for_each_crtc(dev, crtc) {
3211 struct intel_plane *plane = to_intel_plane(crtc->primary);
3212 struct intel_plane_state *plane_state;
3214 drm_modeset_lock_crtc(crtc, &plane->base);
3216 plane_state = to_intel_plane_state(plane->base.state);
3218 if (plane_state->base.fb)
3219 plane->commit_plane(&plane->base, plane_state);
3221 drm_modeset_unlock_crtc(crtc);
3225 void intel_prepare_reset(struct drm_device *dev)
3227 /* no reset support for gen2 */
3231 /* reset doesn't touch the display */
3232 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
3235 drm_modeset_lock_all(dev);
3237 * Disabling the crtcs gracefully seems nicer. Also the
3238 * g33 docs say we should at least disable all the planes.
3240 intel_display_suspend(dev);
3243 void intel_finish_reset(struct drm_device *dev)
3245 struct drm_i915_private *dev_priv = to_i915(dev);
3248 * Flips in the rings will be nuked by the reset,
3249 * so complete all pending flips so that user space
3250 * will get its events and not get stuck.
3252 intel_complete_page_flips(dev);
3254 /* no reset support for gen2 */
3258 /* reset doesn't touch the display */
3259 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
3261 * Flips in the rings have been nuked by the reset,
3262 * so update the base address of all primary
3263 * planes to the the last fb to make sure we're
3264 * showing the correct fb after a reset.
3266 * FIXME: Atomic will make this obsolete since we won't schedule
3267 * CS-based flips (which might get lost in gpu resets) any more.
3269 intel_update_primary_planes(dev);
3274 * The display has been reset as well,
3275 * so need a full re-initialization.
3277 intel_runtime_pm_disable_interrupts(dev_priv);
3278 intel_runtime_pm_enable_interrupts(dev_priv);
3280 intel_modeset_init_hw(dev);
3282 spin_lock_irq(&dev_priv->irq_lock);
3283 if (dev_priv->display.hpd_irq_setup)
3284 dev_priv->display.hpd_irq_setup(dev);
3285 spin_unlock_irq(&dev_priv->irq_lock);
3287 intel_display_resume(dev);
3289 intel_hpd_init(dev_priv);
3291 drm_modeset_unlock_all(dev);
3295 intel_finish_fb(struct drm_framebuffer *old_fb)
3297 struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
3298 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
3299 bool was_interruptible = dev_priv->mm.interruptible;
3302 /* Big Hammer, we also need to ensure that any pending
3303 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
3304 * current scanout is retired before unpinning the old
3305 * framebuffer. Note that we rely on userspace rendering
3306 * into the buffer attached to the pipe they are waiting
3307 * on. If not, userspace generates a GPU hang with IPEHR
3308 * point to the MI_WAIT_FOR_EVENT.
3310 * This should only fail upon a hung GPU, in which case we
3311 * can safely continue.
3313 dev_priv->mm.interruptible = false;
3314 ret = i915_gem_object_wait_rendering(obj, true);
3315 dev_priv->mm.interruptible = was_interruptible;
3320 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3322 struct drm_device *dev = crtc->dev;
3323 struct drm_i915_private *dev_priv = dev->dev_private;
3324 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3327 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
3328 intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
3331 spin_lock_irq(&dev->event_lock);
3332 pending = to_intel_crtc(crtc)->unpin_work != NULL;
3333 spin_unlock_irq(&dev->event_lock);
3338 static void intel_update_pipe_config(struct intel_crtc *crtc,
3339 struct intel_crtc_state *old_crtc_state)
3341 struct drm_device *dev = crtc->base.dev;
3342 struct drm_i915_private *dev_priv = dev->dev_private;
3343 struct intel_crtc_state *pipe_config =
3344 to_intel_crtc_state(crtc->base.state);
3346 /* drm_atomic_helper_update_legacy_modeset_state might not be called. */
3347 crtc->base.mode = crtc->base.state->mode;
3349 DRM_DEBUG_KMS("Updating pipe size %ix%i -> %ix%i\n",
3350 old_crtc_state->pipe_src_w, old_crtc_state->pipe_src_h,
3351 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
3354 intel_set_pipe_csc(&crtc->base);
3357 * Update pipe size and adjust fitter if needed: the reason for this is
3358 * that in compute_mode_changes we check the native mode (not the pfit
3359 * mode) to see if we can flip rather than do a full mode set. In the
3360 * fastboot case, we'll flip, but if we don't update the pipesrc and
3361 * pfit state, we'll end up with a big fb scanned out into the wrong
3365 I915_WRITE(PIPESRC(crtc->pipe),
3366 ((pipe_config->pipe_src_w - 1) << 16) |
3367 (pipe_config->pipe_src_h - 1));
3369 /* on skylake this is done by detaching scalers */
3370 if (INTEL_INFO(dev)->gen >= 9) {
3371 skl_detach_scalers(crtc);
3373 if (pipe_config->pch_pfit.enabled)
3374 skylake_pfit_enable(crtc);
3375 } else if (HAS_PCH_SPLIT(dev)) {
3376 if (pipe_config->pch_pfit.enabled)
3377 ironlake_pfit_enable(crtc);
3378 else if (old_crtc_state->pch_pfit.enabled)
3379 ironlake_pfit_disable(crtc, true);
3383 static void intel_fdi_normal_train(struct drm_crtc *crtc)
3385 struct drm_device *dev = crtc->dev;
3386 struct drm_i915_private *dev_priv = dev->dev_private;
3387 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3388 int pipe = intel_crtc->pipe;
3391 /* enable normal train */
3392 reg = FDI_TX_CTL(pipe);
3393 temp = I915_READ(reg);
3394 if (IS_IVYBRIDGE(dev)) {
3395 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3396 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
3398 temp &= ~FDI_LINK_TRAIN_NONE;
3399 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
3401 I915_WRITE(reg, temp);
3403 reg = FDI_RX_CTL(pipe);
3404 temp = I915_READ(reg);
3405 if (HAS_PCH_CPT(dev)) {
3406 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3407 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3409 temp &= ~FDI_LINK_TRAIN_NONE;
3410 temp |= FDI_LINK_TRAIN_NONE;
3412 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3414 /* wait one idle pattern time */
3418 /* IVB wants error correction enabled */
3419 if (IS_IVYBRIDGE(dev))
3420 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3421 FDI_FE_ERRC_ENABLE);
3424 /* The FDI link training functions for ILK/Ibexpeak. */
3425 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3427 struct drm_device *dev = crtc->dev;
3428 struct drm_i915_private *dev_priv = dev->dev_private;
3429 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3430 int pipe = intel_crtc->pipe;
3431 u32 reg, temp, tries;
3433 /* FDI needs bits from pipe first */
3434 assert_pipe_enabled(dev_priv, pipe);
3436 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3438 reg = FDI_RX_IMR(pipe);
3439 temp = I915_READ(reg);
3440 temp &= ~FDI_RX_SYMBOL_LOCK;
3441 temp &= ~FDI_RX_BIT_LOCK;
3442 I915_WRITE(reg, temp);
3446 /* enable CPU FDI TX and PCH FDI RX */
3447 reg = FDI_TX_CTL(pipe);
3448 temp = I915_READ(reg);
3449 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3450 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3451 temp &= ~FDI_LINK_TRAIN_NONE;
3452 temp |= FDI_LINK_TRAIN_PATTERN_1;
3453 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3455 reg = FDI_RX_CTL(pipe);
3456 temp = I915_READ(reg);
3457 temp &= ~FDI_LINK_TRAIN_NONE;
3458 temp |= FDI_LINK_TRAIN_PATTERN_1;
3459 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3464 /* Ironlake workaround, enable clock pointer after FDI enable*/
3465 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3466 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3467 FDI_RX_PHASE_SYNC_POINTER_EN);
3469 reg = FDI_RX_IIR(pipe);
3470 for (tries = 0; tries < 5; tries++) {
3471 temp = I915_READ(reg);
3472 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3474 if ((temp & FDI_RX_BIT_LOCK)) {
3475 DRM_DEBUG_KMS("FDI train 1 done.\n");
3476 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3481 DRM_ERROR("FDI train 1 fail!\n");
3484 reg = FDI_TX_CTL(pipe);
3485 temp = I915_READ(reg);
3486 temp &= ~FDI_LINK_TRAIN_NONE;
3487 temp |= FDI_LINK_TRAIN_PATTERN_2;
3488 I915_WRITE(reg, temp);
3490 reg = FDI_RX_CTL(pipe);
3491 temp = I915_READ(reg);
3492 temp &= ~FDI_LINK_TRAIN_NONE;
3493 temp |= FDI_LINK_TRAIN_PATTERN_2;
3494 I915_WRITE(reg, temp);
3499 reg = FDI_RX_IIR(pipe);
3500 for (tries = 0; tries < 5; tries++) {
3501 temp = I915_READ(reg);
3502 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3504 if (temp & FDI_RX_SYMBOL_LOCK) {
3505 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3506 DRM_DEBUG_KMS("FDI train 2 done.\n");
3511 DRM_ERROR("FDI train 2 fail!\n");
3513 DRM_DEBUG_KMS("FDI train done\n");
3517 static const int snb_b_fdi_train_param[] = {
3518 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3519 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3520 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3521 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3524 /* The FDI link training functions for SNB/Cougarpoint. */
3525 static void gen6_fdi_link_train(struct drm_crtc *crtc)
3527 struct drm_device *dev = crtc->dev;
3528 struct drm_i915_private *dev_priv = dev->dev_private;
3529 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3530 int pipe = intel_crtc->pipe;
3531 u32 reg, temp, i, retry;
3533 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3535 reg = FDI_RX_IMR(pipe);
3536 temp = I915_READ(reg);
3537 temp &= ~FDI_RX_SYMBOL_LOCK;
3538 temp &= ~FDI_RX_BIT_LOCK;
3539 I915_WRITE(reg, temp);
3544 /* enable CPU FDI TX and PCH FDI RX */
3545 reg = FDI_TX_CTL(pipe);
3546 temp = I915_READ(reg);
3547 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3548 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3549 temp &= ~FDI_LINK_TRAIN_NONE;
3550 temp |= FDI_LINK_TRAIN_PATTERN_1;
3551 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3553 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3554 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3556 I915_WRITE(FDI_RX_MISC(pipe),
3557 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3559 reg = FDI_RX_CTL(pipe);
3560 temp = I915_READ(reg);
3561 if (HAS_PCH_CPT(dev)) {
3562 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3563 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3565 temp &= ~FDI_LINK_TRAIN_NONE;
3566 temp |= FDI_LINK_TRAIN_PATTERN_1;
3568 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3573 for (i = 0; i < 4; i++) {
3574 reg = FDI_TX_CTL(pipe);
3575 temp = I915_READ(reg);
3576 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3577 temp |= snb_b_fdi_train_param[i];
3578 I915_WRITE(reg, temp);
3583 for (retry = 0; retry < 5; retry++) {
3584 reg = FDI_RX_IIR(pipe);
3585 temp = I915_READ(reg);
3586 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3587 if (temp & FDI_RX_BIT_LOCK) {
3588 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3589 DRM_DEBUG_KMS("FDI train 1 done.\n");
3598 DRM_ERROR("FDI train 1 fail!\n");
3601 reg = FDI_TX_CTL(pipe);
3602 temp = I915_READ(reg);
3603 temp &= ~FDI_LINK_TRAIN_NONE;
3604 temp |= FDI_LINK_TRAIN_PATTERN_2;
3606 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3608 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3610 I915_WRITE(reg, temp);
3612 reg = FDI_RX_CTL(pipe);
3613 temp = I915_READ(reg);
3614 if (HAS_PCH_CPT(dev)) {
3615 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3616 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3618 temp &= ~FDI_LINK_TRAIN_NONE;
3619 temp |= FDI_LINK_TRAIN_PATTERN_2;
3621 I915_WRITE(reg, temp);
3626 for (i = 0; i < 4; i++) {
3627 reg = FDI_TX_CTL(pipe);
3628 temp = I915_READ(reg);
3629 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3630 temp |= snb_b_fdi_train_param[i];
3631 I915_WRITE(reg, temp);
3636 for (retry = 0; retry < 5; retry++) {
3637 reg = FDI_RX_IIR(pipe);
3638 temp = I915_READ(reg);
3639 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3640 if (temp & FDI_RX_SYMBOL_LOCK) {
3641 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3642 DRM_DEBUG_KMS("FDI train 2 done.\n");
3651 DRM_ERROR("FDI train 2 fail!\n");
3653 DRM_DEBUG_KMS("FDI train done.\n");
3656 /* Manual link training for Ivy Bridge A0 parts */
3657 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3659 struct drm_device *dev = crtc->dev;
3660 struct drm_i915_private *dev_priv = dev->dev_private;
3661 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3662 int pipe = intel_crtc->pipe;
3663 u32 reg, temp, i, j;
3665 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3667 reg = FDI_RX_IMR(pipe);
3668 temp = I915_READ(reg);
3669 temp &= ~FDI_RX_SYMBOL_LOCK;
3670 temp &= ~FDI_RX_BIT_LOCK;
3671 I915_WRITE(reg, temp);
3676 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3677 I915_READ(FDI_RX_IIR(pipe)));
3679 /* Try each vswing and preemphasis setting twice before moving on */
3680 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3681 /* disable first in case we need to retry */
3682 reg = FDI_TX_CTL(pipe);
3683 temp = I915_READ(reg);
3684 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3685 temp &= ~FDI_TX_ENABLE;
3686 I915_WRITE(reg, temp);
3688 reg = FDI_RX_CTL(pipe);
3689 temp = I915_READ(reg);
3690 temp &= ~FDI_LINK_TRAIN_AUTO;
3691 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3692 temp &= ~FDI_RX_ENABLE;
3693 I915_WRITE(reg, temp);
3695 /* enable CPU FDI TX and PCH FDI RX */
3696 reg = FDI_TX_CTL(pipe);
3697 temp = I915_READ(reg);
3698 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3699 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3700 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
3701 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3702 temp |= snb_b_fdi_train_param[j/2];
3703 temp |= FDI_COMPOSITE_SYNC;
3704 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3706 I915_WRITE(FDI_RX_MISC(pipe),
3707 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3709 reg = FDI_RX_CTL(pipe);
3710 temp = I915_READ(reg);
3711 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3712 temp |= FDI_COMPOSITE_SYNC;
3713 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3716 udelay(1); /* should be 0.5us */
3718 for (i = 0; i < 4; i++) {
3719 reg = FDI_RX_IIR(pipe);
3720 temp = I915_READ(reg);
3721 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3723 if (temp & FDI_RX_BIT_LOCK ||
3724 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3725 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3726 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3730 udelay(1); /* should be 0.5us */
3733 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3738 reg = FDI_TX_CTL(pipe);
3739 temp = I915_READ(reg);
3740 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3741 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3742 I915_WRITE(reg, temp);
3744 reg = FDI_RX_CTL(pipe);
3745 temp = I915_READ(reg);
3746 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3747 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3748 I915_WRITE(reg, temp);
3751 udelay(2); /* should be 1.5us */
3753 for (i = 0; i < 4; i++) {
3754 reg = FDI_RX_IIR(pipe);
3755 temp = I915_READ(reg);
3756 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3758 if (temp & FDI_RX_SYMBOL_LOCK ||
3759 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3760 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3761 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3765 udelay(2); /* should be 1.5us */
3768 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
3772 DRM_DEBUG_KMS("FDI train done.\n");
3775 static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
3777 struct drm_device *dev = intel_crtc->base.dev;
3778 struct drm_i915_private *dev_priv = dev->dev_private;
3779 int pipe = intel_crtc->pipe;
3783 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
3784 reg = FDI_RX_CTL(pipe);
3785 temp = I915_READ(reg);
3786 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
3787 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3788 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3789 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3794 /* Switch from Rawclk to PCDclk */
3795 temp = I915_READ(reg);
3796 I915_WRITE(reg, temp | FDI_PCDCLK);
3801 /* Enable CPU FDI TX PLL, always on for Ironlake */
3802 reg = FDI_TX_CTL(pipe);
3803 temp = I915_READ(reg);
3804 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3805 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
3812 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3814 struct drm_device *dev = intel_crtc->base.dev;
3815 struct drm_i915_private *dev_priv = dev->dev_private;
3816 int pipe = intel_crtc->pipe;
3819 /* Switch from PCDclk to Rawclk */
3820 reg = FDI_RX_CTL(pipe);
3821 temp = I915_READ(reg);
3822 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3824 /* Disable CPU FDI TX PLL */
3825 reg = FDI_TX_CTL(pipe);
3826 temp = I915_READ(reg);
3827 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3832 reg = FDI_RX_CTL(pipe);
3833 temp = I915_READ(reg);
3834 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3836 /* Wait for the clocks to turn off. */
3841 static void ironlake_fdi_disable(struct drm_crtc *crtc)
3843 struct drm_device *dev = crtc->dev;
3844 struct drm_i915_private *dev_priv = dev->dev_private;
3845 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3846 int pipe = intel_crtc->pipe;
3849 /* disable CPU FDI tx and PCH FDI rx */
3850 reg = FDI_TX_CTL(pipe);
3851 temp = I915_READ(reg);
3852 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3855 reg = FDI_RX_CTL(pipe);
3856 temp = I915_READ(reg);
3857 temp &= ~(0x7 << 16);
3858 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3859 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3864 /* Ironlake workaround, disable clock pointer after downing FDI */
3865 if (HAS_PCH_IBX(dev))
3866 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3868 /* still set train pattern 1 */
3869 reg = FDI_TX_CTL(pipe);
3870 temp = I915_READ(reg);
3871 temp &= ~FDI_LINK_TRAIN_NONE;
3872 temp |= FDI_LINK_TRAIN_PATTERN_1;
3873 I915_WRITE(reg, temp);
3875 reg = FDI_RX_CTL(pipe);
3876 temp = I915_READ(reg);
3877 if (HAS_PCH_CPT(dev)) {
3878 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3879 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3881 temp &= ~FDI_LINK_TRAIN_NONE;
3882 temp |= FDI_LINK_TRAIN_PATTERN_1;
3884 /* BPC in FDI rx is consistent with that in PIPECONF */
3885 temp &= ~(0x07 << 16);
3886 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3887 I915_WRITE(reg, temp);
3893 bool intel_has_pending_fb_unpin(struct drm_device *dev)
3895 struct intel_crtc *crtc;
3897 /* Note that we don't need to be called with mode_config.lock here
3898 * as our list of CRTC objects is static for the lifetime of the
3899 * device and so cannot disappear as we iterate. Similarly, we can
3900 * happily treat the predicates as racy, atomic checks as userspace
3901 * cannot claim and pin a new fb without at least acquring the
3902 * struct_mutex and so serialising with us.
3904 for_each_intel_crtc(dev, crtc) {
3905 if (atomic_read(&crtc->unpin_work_count) == 0)
3908 if (crtc->unpin_work)
3909 intel_wait_for_vblank(dev, crtc->pipe);
3917 static void page_flip_completed(struct intel_crtc *intel_crtc)
3919 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3920 struct intel_unpin_work *work = intel_crtc->unpin_work;
3922 /* ensure that the unpin work is consistent wrt ->pending. */
3924 intel_crtc->unpin_work = NULL;
3927 drm_send_vblank_event(intel_crtc->base.dev,
3931 drm_crtc_vblank_put(&intel_crtc->base);
3933 wake_up_all(&dev_priv->pending_flip_queue);
3934 queue_work(dev_priv->wq, &work->work);
3936 trace_i915_flip_complete(intel_crtc->plane,
3937 work->pending_flip_obj);
3940 void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
3942 struct drm_device *dev = crtc->dev;
3943 struct drm_i915_private *dev_priv = dev->dev_private;
3945 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
3946 if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
3947 !intel_crtc_has_pending_flip(crtc),
3949 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3951 spin_lock_irq(&dev->event_lock);
3952 if (intel_crtc->unpin_work) {
3953 WARN_ONCE(1, "Removing stuck page flip\n");
3954 page_flip_completed(intel_crtc);
3956 spin_unlock_irq(&dev->event_lock);
3959 if (crtc->primary->fb) {
3960 mutex_lock(&dev->struct_mutex);
3961 intel_finish_fb(crtc->primary->fb);
3962 mutex_unlock(&dev->struct_mutex);
3966 /* Program iCLKIP clock to the desired frequency */
3967 static void lpt_program_iclkip(struct drm_crtc *crtc)
3969 struct drm_device *dev = crtc->dev;
3970 struct drm_i915_private *dev_priv = dev->dev_private;
3971 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
3972 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3975 mutex_lock(&dev_priv->sb_lock);
3977 /* It is necessary to ungate the pixclk gate prior to programming
3978 * the divisors, and gate it back when it is done.
3980 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3982 /* Disable SSCCTL */
3983 intel_sbi_write(dev_priv, SBI_SSCCTL6,
3984 intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
3988 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
3989 if (clock == 20000) {
3994 /* The iCLK virtual clock root frequency is in MHz,
3995 * but the adjusted_mode->crtc_clock in in KHz. To get the
3996 * divisors, it is necessary to divide one by another, so we
3997 * convert the virtual clock precision to KHz here for higher
4000 u32 iclk_virtual_root_freq = 172800 * 1000;
4001 u32 iclk_pi_range = 64;
4002 u32 desired_divisor, msb_divisor_value, pi_value;
4004 desired_divisor = (iclk_virtual_root_freq / clock);
4005 msb_divisor_value = desired_divisor / iclk_pi_range;
4006 pi_value = desired_divisor % iclk_pi_range;
4009 divsel = msb_divisor_value - 2;
4010 phaseinc = pi_value;
4013 /* This should not happen with any sane values */
4014 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
4015 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
4016 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
4017 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
4019 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
4026 /* Program SSCDIVINTPHASE6 */
4027 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
4028 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
4029 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
4030 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
4031 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
4032 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
4033 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
4034 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
4036 /* Program SSCAUXDIV */
4037 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
4038 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
4039 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
4040 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
4042 /* Enable modulator and associated divider */
4043 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
4044 temp &= ~SBI_SSCCTL_DISABLE;
4045 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
4047 /* Wait for initialization time */
4050 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
4052 mutex_unlock(&dev_priv->sb_lock);
4055 static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
4056 enum pipe pch_transcoder)
4058 struct drm_device *dev = crtc->base.dev;
4059 struct drm_i915_private *dev_priv = dev->dev_private;
4060 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
4062 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
4063 I915_READ(HTOTAL(cpu_transcoder)));
4064 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
4065 I915_READ(HBLANK(cpu_transcoder)));
4066 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
4067 I915_READ(HSYNC(cpu_transcoder)));
4069 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
4070 I915_READ(VTOTAL(cpu_transcoder)));
4071 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
4072 I915_READ(VBLANK(cpu_transcoder)));
4073 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
4074 I915_READ(VSYNC(cpu_transcoder)));
4075 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4076 I915_READ(VSYNCSHIFT(cpu_transcoder)));
4079 static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
4081 struct drm_i915_private *dev_priv = dev->dev_private;
4084 temp = I915_READ(SOUTH_CHICKEN1);
4085 if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
4088 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4089 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4091 temp &= ~FDI_BC_BIFURCATION_SELECT;
4093 temp |= FDI_BC_BIFURCATION_SELECT;
4095 DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
4096 I915_WRITE(SOUTH_CHICKEN1, temp);
4097 POSTING_READ(SOUTH_CHICKEN1);
4100 static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
4102 struct drm_device *dev = intel_crtc->base.dev;
4104 switch (intel_crtc->pipe) {
4108 if (intel_crtc->config->fdi_lanes > 2)
4109 cpt_set_fdi_bc_bifurcation(dev, false);
4111 cpt_set_fdi_bc_bifurcation(dev, true);
4115 cpt_set_fdi_bc_bifurcation(dev, true);
4124 * Enable PCH resources required for PCH ports:
4126 * - FDI training & RX/TX
4127 * - update transcoder timings
4128 * - DP transcoding bits
4131 static void ironlake_pch_enable(struct drm_crtc *crtc)
4133 struct drm_device *dev = crtc->dev;
4134 struct drm_i915_private *dev_priv = dev->dev_private;
4135 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4136 int pipe = intel_crtc->pipe;
4139 assert_pch_transcoder_disabled(dev_priv, pipe);
4141 if (IS_IVYBRIDGE(dev))
4142 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
4144 /* Write the TU size bits before fdi link training, so that error
4145 * detection works. */
4146 I915_WRITE(FDI_RX_TUSIZE1(pipe),
4147 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4149 /* For PCH output, training FDI link */
4150 dev_priv->display.fdi_link_train(crtc);
4152 /* We need to program the right clock selection before writing the pixel
4153 * mutliplier into the DPLL. */
4154 if (HAS_PCH_CPT(dev)) {
4157 temp = I915_READ(PCH_DPLL_SEL);
4158 temp |= TRANS_DPLL_ENABLE(pipe);
4159 sel = TRANS_DPLLB_SEL(pipe);
4160 if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
4164 I915_WRITE(PCH_DPLL_SEL, temp);
4167 /* XXX: pch pll's can be enabled any time before we enable the PCH
4168 * transcoder, and we actually should do this to not upset any PCH
4169 * transcoder that already use the clock when we share it.
4171 * Note that enable_shared_dpll tries to do the right thing, but
4172 * get_shared_dpll unconditionally resets the pll - we need that to have
4173 * the right LVDS enable sequence. */
4174 intel_enable_shared_dpll(intel_crtc);
4176 /* set transcoder timing, panel must allow it */
4177 assert_panel_unlocked(dev_priv, pipe);
4178 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
4180 intel_fdi_normal_train(crtc);
4182 /* For PCH DP, enable TRANS_DP_CTL */
4183 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
4184 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
4185 reg = TRANS_DP_CTL(pipe);
4186 temp = I915_READ(reg);
4187 temp &= ~(TRANS_DP_PORT_SEL_MASK |
4188 TRANS_DP_SYNC_MASK |
4190 temp |= TRANS_DP_OUTPUT_ENABLE;
4191 temp |= bpc << 9; /* same format but at 11:9 */
4193 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
4194 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
4195 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
4196 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
4198 switch (intel_trans_dp_port_sel(crtc)) {
4200 temp |= TRANS_DP_PORT_SEL_B;
4203 temp |= TRANS_DP_PORT_SEL_C;
4206 temp |= TRANS_DP_PORT_SEL_D;
4212 I915_WRITE(reg, temp);
4215 ironlake_enable_pch_transcoder(dev_priv, pipe);
4218 static void lpt_pch_enable(struct drm_crtc *crtc)
4220 struct drm_device *dev = crtc->dev;
4221 struct drm_i915_private *dev_priv = dev->dev_private;
4222 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4223 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4225 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
4227 lpt_program_iclkip(crtc);
4229 /* Set transcoder timing. */
4230 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
4232 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
4235 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
4236 struct intel_crtc_state *crtc_state)
4238 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
4239 struct intel_shared_dpll *pll;
4240 struct intel_shared_dpll_config *shared_dpll;
4241 enum intel_dpll_id i;
4242 int max = dev_priv->num_shared_dpll;
4244 shared_dpll = intel_atomic_get_shared_dpll_state(crtc_state->base.state);
4246 if (HAS_PCH_IBX(dev_priv->dev)) {
4247 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
4248 i = (enum intel_dpll_id) crtc->pipe;
4249 pll = &dev_priv->shared_dplls[i];
4251 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4252 crtc->base.base.id, pll->name);
4254 WARN_ON(shared_dpll[i].crtc_mask);
4259 if (IS_BROXTON(dev_priv->dev)) {
4260 /* PLL is attached to port in bxt */
4261 struct intel_encoder *encoder;
4262 struct intel_digital_port *intel_dig_port;
4264 encoder = intel_ddi_get_crtc_new_encoder(crtc_state);
4265 if (WARN_ON(!encoder))
4268 intel_dig_port = enc_to_dig_port(&encoder->base);
4269 /* 1:1 mapping between ports and PLLs */
4270 i = (enum intel_dpll_id)intel_dig_port->port;
4271 pll = &dev_priv->shared_dplls[i];
4272 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4273 crtc->base.base.id, pll->name);
4274 WARN_ON(shared_dpll[i].crtc_mask);
4277 } else if (INTEL_INFO(dev_priv)->gen < 9 && HAS_DDI(dev_priv))
4278 /* Do not consider SPLL */
4281 for (i = 0; i < max; i++) {
4282 pll = &dev_priv->shared_dplls[i];
4284 /* Only want to check enabled timings first */
4285 if (shared_dpll[i].crtc_mask == 0)
4288 if (memcmp(&crtc_state->dpll_hw_state,
4289 &shared_dpll[i].hw_state,
4290 sizeof(crtc_state->dpll_hw_state)) == 0) {
4291 DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
4292 crtc->base.base.id, pll->name,
4293 shared_dpll[i].crtc_mask,
4299 /* Ok no matching timings, maybe there's a free one? */
4300 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4301 pll = &dev_priv->shared_dplls[i];
4302 if (shared_dpll[i].crtc_mask == 0) {
4303 DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
4304 crtc->base.base.id, pll->name);
4312 if (shared_dpll[i].crtc_mask == 0)
4313 shared_dpll[i].hw_state =
4314 crtc_state->dpll_hw_state;
4316 crtc_state->shared_dpll = i;
4317 DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
4318 pipe_name(crtc->pipe));
4320 shared_dpll[i].crtc_mask |= 1 << crtc->pipe;
4325 static void intel_shared_dpll_commit(struct drm_atomic_state *state)
4327 struct drm_i915_private *dev_priv = to_i915(state->dev);
4328 struct intel_shared_dpll_config *shared_dpll;
4329 struct intel_shared_dpll *pll;
4330 enum intel_dpll_id i;
4332 if (!to_intel_atomic_state(state)->dpll_set)
4335 shared_dpll = to_intel_atomic_state(state)->shared_dpll;
4336 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4337 pll = &dev_priv->shared_dplls[i];
4338 pll->config = shared_dpll[i];
4342 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4344 struct drm_i915_private *dev_priv = dev->dev_private;
4345 int dslreg = PIPEDSL(pipe);
4348 temp = I915_READ(dslreg);
4350 if (wait_for(I915_READ(dslreg) != temp, 5)) {
4351 if (wait_for(I915_READ(dslreg) != temp, 5))
4352 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4357 skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
4358 unsigned scaler_user, int *scaler_id, unsigned int rotation,
4359 int src_w, int src_h, int dst_w, int dst_h)
4361 struct intel_crtc_scaler_state *scaler_state =
4362 &crtc_state->scaler_state;
4363 struct intel_crtc *intel_crtc =
4364 to_intel_crtc(crtc_state->base.crtc);
4367 need_scaling = intel_rotation_90_or_270(rotation) ?
4368 (src_h != dst_w || src_w != dst_h):
4369 (src_w != dst_w || src_h != dst_h);
4372 * if plane is being disabled or scaler is no more required or force detach
4373 * - free scaler binded to this plane/crtc
4374 * - in order to do this, update crtc->scaler_usage
4376 * Here scaler state in crtc_state is set free so that
4377 * scaler can be assigned to other user. Actual register
4378 * update to free the scaler is done in plane/panel-fit programming.
4379 * For this purpose crtc/plane_state->scaler_id isn't reset here.
4381 if (force_detach || !need_scaling) {
4382 if (*scaler_id >= 0) {
4383 scaler_state->scaler_users &= ~(1 << scaler_user);
4384 scaler_state->scalers[*scaler_id].in_use = 0;
4386 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4387 "Staged freeing scaler id %d scaler_users = 0x%x\n",
4388 intel_crtc->pipe, scaler_user, *scaler_id,
4389 scaler_state->scaler_users);
4396 if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
4397 dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
4399 src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
4400 dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
4401 DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
4402 "size is out of scaler range\n",
4403 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
4407 /* mark this plane as a scaler user in crtc_state */
4408 scaler_state->scaler_users |= (1 << scaler_user);
4409 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4410 "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
4411 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
4412 scaler_state->scaler_users);
4418 * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
4420 * @state: crtc's scaler state
4423 * 0 - scaler_usage updated successfully
4424 * error - requested scaling cannot be supported or other error condition
4426 int skl_update_scaler_crtc(struct intel_crtc_state *state)
4428 struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
4429 const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
4431 DRM_DEBUG_KMS("Updating scaler for [CRTC:%i] scaler_user index %u.%u\n",
4432 intel_crtc->base.base.id, intel_crtc->pipe, SKL_CRTC_INDEX);
4434 return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
4435 &state->scaler_state.scaler_id, DRM_ROTATE_0,
4436 state->pipe_src_w, state->pipe_src_h,
4437 adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
4441 * skl_update_scaler_plane - Stages update to scaler state for a given plane.
4443 * @state: crtc's scaler state
4444 * @plane_state: atomic plane state to update
4447 * 0 - scaler_usage updated successfully
4448 * error - requested scaling cannot be supported or other error condition
4450 static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
4451 struct intel_plane_state *plane_state)
4454 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
4455 struct intel_plane *intel_plane =
4456 to_intel_plane(plane_state->base.plane);
4457 struct drm_framebuffer *fb = plane_state->base.fb;
4460 bool force_detach = !fb || !plane_state->visible;
4462 DRM_DEBUG_KMS("Updating scaler for [PLANE:%d] scaler_user index %u.%u\n",
4463 intel_plane->base.base.id, intel_crtc->pipe,
4464 drm_plane_index(&intel_plane->base));
4466 ret = skl_update_scaler(crtc_state, force_detach,
4467 drm_plane_index(&intel_plane->base),
4468 &plane_state->scaler_id,
4469 plane_state->base.rotation,
4470 drm_rect_width(&plane_state->src) >> 16,
4471 drm_rect_height(&plane_state->src) >> 16,
4472 drm_rect_width(&plane_state->dst),
4473 drm_rect_height(&plane_state->dst));
4475 if (ret || plane_state->scaler_id < 0)
4478 /* check colorkey */
4479 if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
4480 DRM_DEBUG_KMS("[PLANE:%d] scaling with color key not allowed",
4481 intel_plane->base.base.id);
4485 /* Check src format */
4486 switch (fb->pixel_format) {
4487 case DRM_FORMAT_RGB565:
4488 case DRM_FORMAT_XBGR8888:
4489 case DRM_FORMAT_XRGB8888:
4490 case DRM_FORMAT_ABGR8888:
4491 case DRM_FORMAT_ARGB8888:
4492 case DRM_FORMAT_XRGB2101010:
4493 case DRM_FORMAT_XBGR2101010:
4494 case DRM_FORMAT_YUYV:
4495 case DRM_FORMAT_YVYU:
4496 case DRM_FORMAT_UYVY:
4497 case DRM_FORMAT_VYUY:
4500 DRM_DEBUG_KMS("[PLANE:%d] FB:%d unsupported scaling format 0x%x\n",
4501 intel_plane->base.base.id, fb->base.id, fb->pixel_format);
4508 static void skylake_scaler_disable(struct intel_crtc *crtc)
4512 for (i = 0; i < crtc->num_scalers; i++)
4513 skl_detach_scaler(crtc, i);
4516 static void skylake_pfit_enable(struct intel_crtc *crtc)
4518 struct drm_device *dev = crtc->base.dev;
4519 struct drm_i915_private *dev_priv = dev->dev_private;
4520 int pipe = crtc->pipe;
4521 struct intel_crtc_scaler_state *scaler_state =
4522 &crtc->config->scaler_state;
4524 DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
4526 if (crtc->config->pch_pfit.enabled) {
4529 if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
4530 DRM_ERROR("Requesting pfit without getting a scaler first\n");
4534 id = scaler_state->scaler_id;
4535 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
4536 PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
4537 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
4538 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
4540 DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
4544 static void ironlake_pfit_enable(struct intel_crtc *crtc)
4546 struct drm_device *dev = crtc->base.dev;
4547 struct drm_i915_private *dev_priv = dev->dev_private;
4548 int pipe = crtc->pipe;
4550 if (crtc->config->pch_pfit.enabled) {
4551 /* Force use of hard-coded filter coefficients
4552 * as some pre-programmed values are broken,
4555 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4556 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4557 PF_PIPE_SEL_IVB(pipe));
4559 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
4560 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4561 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4565 void hsw_enable_ips(struct intel_crtc *crtc)
4567 struct drm_device *dev = crtc->base.dev;
4568 struct drm_i915_private *dev_priv = dev->dev_private;
4570 if (!crtc->config->ips_enabled)
4573 /* We can only enable IPS after we enable a plane and wait for a vblank */
4574 intel_wait_for_vblank(dev, crtc->pipe);
4576 assert_plane_enabled(dev_priv, crtc->plane);
4577 if (IS_BROADWELL(dev)) {
4578 mutex_lock(&dev_priv->rps.hw_lock);
4579 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4580 mutex_unlock(&dev_priv->rps.hw_lock);
4581 /* Quoting Art Runyan: "its not safe to expect any particular
4582 * value in IPS_CTL bit 31 after enabling IPS through the
4583 * mailbox." Moreover, the mailbox may return a bogus state,
4584 * so we need to just enable it and continue on.
4587 I915_WRITE(IPS_CTL, IPS_ENABLE);
4588 /* The bit only becomes 1 in the next vblank, so this wait here
4589 * is essentially intel_wait_for_vblank. If we don't have this
4590 * and don't wait for vblanks until the end of crtc_enable, then
4591 * the HW state readout code will complain that the expected
4592 * IPS_CTL value is not the one we read. */
4593 if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
4594 DRM_ERROR("Timed out waiting for IPS enable\n");
4598 void hsw_disable_ips(struct intel_crtc *crtc)
4600 struct drm_device *dev = crtc->base.dev;
4601 struct drm_i915_private *dev_priv = dev->dev_private;
4603 if (!crtc->config->ips_enabled)
4606 assert_plane_enabled(dev_priv, crtc->plane);
4607 if (IS_BROADWELL(dev)) {
4608 mutex_lock(&dev_priv->rps.hw_lock);
4609 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4610 mutex_unlock(&dev_priv->rps.hw_lock);
4611 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4612 if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
4613 DRM_ERROR("Timed out waiting for IPS disable\n");
4615 I915_WRITE(IPS_CTL, 0);
4616 POSTING_READ(IPS_CTL);
4619 /* We need to wait for a vblank before we can disable the plane. */
4620 intel_wait_for_vblank(dev, crtc->pipe);
4623 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4624 static void intel_crtc_load_lut(struct drm_crtc *crtc)
4626 struct drm_device *dev = crtc->dev;
4627 struct drm_i915_private *dev_priv = dev->dev_private;
4628 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4629 enum pipe pipe = intel_crtc->pipe;
4631 bool reenable_ips = false;
4633 /* The clocks have to be on to load the palette. */
4634 if (!crtc->state->active)
4637 if (HAS_GMCH_DISPLAY(dev_priv->dev)) {
4638 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
4639 assert_dsi_pll_enabled(dev_priv);
4641 assert_pll_enabled(dev_priv, pipe);
4644 /* Workaround : Do not read or write the pipe palette/gamma data while
4645 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
4647 if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
4648 ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
4649 GAMMA_MODE_MODE_SPLIT)) {
4650 hsw_disable_ips(intel_crtc);
4651 reenable_ips = true;
4654 for (i = 0; i < 256; i++) {
4657 if (HAS_GMCH_DISPLAY(dev))
4658 palreg = PALETTE(pipe, i);
4660 palreg = LGC_PALETTE(pipe, i);
4663 (intel_crtc->lut_r[i] << 16) |
4664 (intel_crtc->lut_g[i] << 8) |
4665 intel_crtc->lut_b[i]);
4669 hsw_enable_ips(intel_crtc);
4672 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
4674 if (intel_crtc->overlay) {
4675 struct drm_device *dev = intel_crtc->base.dev;
4676 struct drm_i915_private *dev_priv = dev->dev_private;
4678 mutex_lock(&dev->struct_mutex);
4679 dev_priv->mm.interruptible = false;
4680 (void) intel_overlay_switch_off(intel_crtc->overlay);
4681 dev_priv->mm.interruptible = true;
4682 mutex_unlock(&dev->struct_mutex);
4685 /* Let userspace switch the overlay on again. In most cases userspace
4686 * has to recompute where to put it anyway.
4691 * intel_post_enable_primary - Perform operations after enabling primary plane
4692 * @crtc: the CRTC whose primary plane was just enabled
4694 * Performs potentially sleeping operations that must be done after the primary
4695 * plane is enabled, such as updating FBC and IPS. Note that this may be
4696 * called due to an explicit primary plane update, or due to an implicit
4697 * re-enable that is caused when a sprite plane is updated to no longer
4698 * completely hide the primary plane.
4701 intel_post_enable_primary(struct drm_crtc *crtc)
4703 struct drm_device *dev = crtc->dev;
4704 struct drm_i915_private *dev_priv = dev->dev_private;
4705 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4706 int pipe = intel_crtc->pipe;
4709 * BDW signals flip done immediately if the plane
4710 * is disabled, even if the plane enable is already
4711 * armed to occur at the next vblank :(
4713 if (IS_BROADWELL(dev))
4714 intel_wait_for_vblank(dev, pipe);
4717 * FIXME IPS should be fine as long as one plane is
4718 * enabled, but in practice it seems to have problems
4719 * when going from primary only to sprite only and vice
4722 hsw_enable_ips(intel_crtc);
4725 * Gen2 reports pipe underruns whenever all planes are disabled.
4726 * So don't enable underrun reporting before at least some planes
4728 * FIXME: Need to fix the logic to work when we turn off all planes
4729 * but leave the pipe running.
4732 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4734 /* Underruns don't raise interrupts, so check manually. */
4735 if (HAS_GMCH_DISPLAY(dev))
4736 i9xx_check_fifo_underruns(dev_priv);
4740 * intel_pre_disable_primary - Perform operations before disabling primary plane
4741 * @crtc: the CRTC whose primary plane is to be disabled
4743 * Performs potentially sleeping operations that must be done before the
4744 * primary plane is disabled, such as updating FBC and IPS. Note that this may
4745 * be called due to an explicit primary plane update, or due to an implicit
4746 * disable that is caused when a sprite plane completely hides the primary
4750 intel_pre_disable_primary(struct drm_crtc *crtc)
4752 struct drm_device *dev = crtc->dev;
4753 struct drm_i915_private *dev_priv = dev->dev_private;
4754 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4755 int pipe = intel_crtc->pipe;
4758 * Gen2 reports pipe underruns whenever all planes are disabled.
4759 * So diasble underrun reporting before all the planes get disabled.
4760 * FIXME: Need to fix the logic to work when we turn off all planes
4761 * but leave the pipe running.
4764 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4767 * Vblank time updates from the shadow to live plane control register
4768 * are blocked if the memory self-refresh mode is active at that
4769 * moment. So to make sure the plane gets truly disabled, disable
4770 * first the self-refresh mode. The self-refresh enable bit in turn
4771 * will be checked/applied by the HW only at the next frame start
4772 * event which is after the vblank start event, so we need to have a
4773 * wait-for-vblank between disabling the plane and the pipe.
4775 if (HAS_GMCH_DISPLAY(dev)) {
4776 intel_set_memory_cxsr(dev_priv, false);
4777 dev_priv->wm.vlv.cxsr = false;
4778 intel_wait_for_vblank(dev, pipe);
4782 * FIXME IPS should be fine as long as one plane is
4783 * enabled, but in practice it seems to have problems
4784 * when going from primary only to sprite only and vice
4787 hsw_disable_ips(intel_crtc);
4790 static void intel_post_plane_update(struct intel_crtc *crtc)
4792 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4793 struct drm_device *dev = crtc->base.dev;
4794 struct drm_i915_private *dev_priv = dev->dev_private;
4795 struct drm_plane *plane;
4797 if (atomic->wait_vblank)
4798 intel_wait_for_vblank(dev, crtc->pipe);
4800 intel_frontbuffer_flip(dev, atomic->fb_bits);
4802 if (atomic->disable_cxsr)
4803 crtc->wm.cxsr_allowed = true;
4805 if (crtc->atomic.update_wm_post)
4806 intel_update_watermarks(&crtc->base);
4808 if (atomic->update_fbc)
4809 intel_fbc_update(dev_priv);
4811 if (atomic->post_enable_primary)
4812 intel_post_enable_primary(&crtc->base);
4814 drm_for_each_plane_mask(plane, dev, atomic->update_sprite_watermarks)
4815 intel_update_sprite_watermarks(plane, &crtc->base,
4816 0, 0, 0, false, false);
4818 memset(atomic, 0, sizeof(*atomic));
4821 static void intel_pre_plane_update(struct intel_crtc *crtc)
4823 struct drm_device *dev = crtc->base.dev;
4824 struct drm_i915_private *dev_priv = dev->dev_private;
4825 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4826 struct drm_plane *p;
4828 /* Track fb's for any planes being disabled */
4829 drm_for_each_plane_mask(p, dev, atomic->disabled_planes) {
4830 struct intel_plane *plane = to_intel_plane(p);
4832 mutex_lock(&dev->struct_mutex);
4833 i915_gem_track_fb(intel_fb_obj(plane->base.fb), NULL,
4834 plane->frontbuffer_bit);
4835 mutex_unlock(&dev->struct_mutex);
4838 if (atomic->wait_for_flips)
4839 intel_crtc_wait_for_pending_flips(&crtc->base);
4841 if (atomic->disable_fbc)
4842 intel_fbc_disable_crtc(crtc);
4844 if (crtc->atomic.disable_ips)
4845 hsw_disable_ips(crtc);
4847 if (atomic->pre_disable_primary)
4848 intel_pre_disable_primary(&crtc->base);
4850 if (atomic->disable_cxsr) {
4851 crtc->wm.cxsr_allowed = false;
4852 intel_set_memory_cxsr(dev_priv, false);
4856 static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask)
4858 struct drm_device *dev = crtc->dev;
4859 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4860 struct drm_plane *p;
4861 int pipe = intel_crtc->pipe;
4863 intel_crtc_dpms_overlay_disable(intel_crtc);
4865 drm_for_each_plane_mask(p, dev, plane_mask)
4866 to_intel_plane(p)->disable_plane(p, crtc);
4869 * FIXME: Once we grow proper nuclear flip support out of this we need
4870 * to compute the mask of flip planes precisely. For the time being
4871 * consider this a flip to a NULL plane.
4873 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4876 static void ironlake_crtc_enable(struct drm_crtc *crtc)
4878 struct drm_device *dev = crtc->dev;
4879 struct drm_i915_private *dev_priv = dev->dev_private;
4880 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4881 struct intel_encoder *encoder;
4882 int pipe = intel_crtc->pipe;
4884 if (WARN_ON(intel_crtc->active))
4887 if (intel_crtc->config->has_pch_encoder)
4888 intel_prepare_shared_dpll(intel_crtc);
4890 if (intel_crtc->config->has_dp_encoder)
4891 intel_dp_set_m_n(intel_crtc, M1_N1);
4893 intel_set_pipe_timings(intel_crtc);
4895 if (intel_crtc->config->has_pch_encoder) {
4896 intel_cpu_transcoder_set_m_n(intel_crtc,
4897 &intel_crtc->config->fdi_m_n, NULL);
4900 ironlake_set_pipeconf(crtc);
4902 intel_crtc->active = true;
4904 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4905 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
4907 for_each_encoder_on_crtc(dev, crtc, encoder)
4908 if (encoder->pre_enable)
4909 encoder->pre_enable(encoder);
4911 if (intel_crtc->config->has_pch_encoder) {
4912 /* Note: FDI PLL enabling _must_ be done before we enable the
4913 * cpu pipes, hence this is separate from all the other fdi/pch
4915 ironlake_fdi_pll_enable(intel_crtc);
4917 assert_fdi_tx_disabled(dev_priv, pipe);
4918 assert_fdi_rx_disabled(dev_priv, pipe);
4921 ironlake_pfit_enable(intel_crtc);
4924 * On ILK+ LUT must be loaded before the pipe is running but with
4927 intel_crtc_load_lut(crtc);
4929 intel_update_watermarks(crtc);
4930 intel_enable_pipe(intel_crtc);
4932 if (intel_crtc->config->has_pch_encoder)
4933 ironlake_pch_enable(crtc);
4935 assert_vblank_disabled(crtc);
4936 drm_crtc_vblank_on(crtc);
4938 for_each_encoder_on_crtc(dev, crtc, encoder)
4939 encoder->enable(encoder);
4941 if (HAS_PCH_CPT(dev))
4942 cpt_verify_modeset(dev, intel_crtc->pipe);
4945 /* IPS only exists on ULT machines and is tied to pipe A. */
4946 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4948 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
4951 static void haswell_crtc_enable(struct drm_crtc *crtc)
4953 struct drm_device *dev = crtc->dev;
4954 struct drm_i915_private *dev_priv = dev->dev_private;
4955 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4956 struct intel_encoder *encoder;
4957 int pipe = intel_crtc->pipe, hsw_workaround_pipe;
4958 struct intel_crtc_state *pipe_config =
4959 to_intel_crtc_state(crtc->state);
4960 bool is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
4962 if (WARN_ON(intel_crtc->active))
4965 if (intel_crtc_to_shared_dpll(intel_crtc))
4966 intel_enable_shared_dpll(intel_crtc);
4968 if (intel_crtc->config->has_dp_encoder)
4969 intel_dp_set_m_n(intel_crtc, M1_N1);
4971 intel_set_pipe_timings(intel_crtc);
4973 if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
4974 I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
4975 intel_crtc->config->pixel_multiplier - 1);
4978 if (intel_crtc->config->has_pch_encoder) {
4979 intel_cpu_transcoder_set_m_n(intel_crtc,
4980 &intel_crtc->config->fdi_m_n, NULL);
4983 haswell_set_pipeconf(crtc);
4985 intel_set_pipe_csc(crtc);
4987 intel_crtc->active = true;
4989 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4990 for_each_encoder_on_crtc(dev, crtc, encoder) {
4991 if (encoder->pre_pll_enable)
4992 encoder->pre_pll_enable(encoder);
4993 if (encoder->pre_enable)
4994 encoder->pre_enable(encoder);
4997 if (intel_crtc->config->has_pch_encoder) {
4998 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5000 dev_priv->display.fdi_link_train(crtc);
5004 intel_ddi_enable_pipe_clock(intel_crtc);
5006 if (INTEL_INFO(dev)->gen >= 9)
5007 skylake_pfit_enable(intel_crtc);
5009 ironlake_pfit_enable(intel_crtc);
5012 * On ILK+ LUT must be loaded before the pipe is running but with
5015 intel_crtc_load_lut(crtc);
5017 intel_ddi_set_pipe_settings(crtc);
5019 intel_ddi_enable_transcoder_func(crtc);
5021 intel_update_watermarks(crtc);
5022 intel_enable_pipe(intel_crtc);
5024 if (intel_crtc->config->has_pch_encoder)
5025 lpt_pch_enable(crtc);
5027 if (intel_crtc->config->dp_encoder_is_mst && !is_dsi)
5028 intel_ddi_set_vc_payload_alloc(crtc, true);
5030 assert_vblank_disabled(crtc);
5031 drm_crtc_vblank_on(crtc);
5033 for_each_encoder_on_crtc(dev, crtc, encoder) {
5034 encoder->enable(encoder);
5035 intel_opregion_notify_encoder(encoder, true);
5038 /* If we change the relative order between pipe/planes enabling, we need
5039 * to change the workaround. */
5040 hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
5041 if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) {
5042 intel_wait_for_vblank(dev, hsw_workaround_pipe);
5043 intel_wait_for_vblank(dev, hsw_workaround_pipe);
5047 static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force)
5049 struct drm_device *dev = crtc->base.dev;
5050 struct drm_i915_private *dev_priv = dev->dev_private;
5051 int pipe = crtc->pipe;
5053 /* To avoid upsetting the power well on haswell only disable the pfit if
5054 * it's in use. The hw state code will make sure we get this right. */
5055 if (force || crtc->config->pch_pfit.enabled) {
5056 I915_WRITE(PF_CTL(pipe), 0);
5057 I915_WRITE(PF_WIN_POS(pipe), 0);
5058 I915_WRITE(PF_WIN_SZ(pipe), 0);
5062 static void ironlake_crtc_disable(struct drm_crtc *crtc)
5064 struct drm_device *dev = crtc->dev;
5065 struct drm_i915_private *dev_priv = dev->dev_private;
5066 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5067 struct intel_encoder *encoder;
5068 int pipe = intel_crtc->pipe;
5071 for_each_encoder_on_crtc(dev, crtc, encoder)
5072 encoder->disable(encoder);
5074 drm_crtc_vblank_off(crtc);
5075 assert_vblank_disabled(crtc);
5077 if (intel_crtc->config->has_pch_encoder)
5078 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
5080 intel_disable_pipe(intel_crtc);
5082 ironlake_pfit_disable(intel_crtc, false);
5084 if (intel_crtc->config->has_pch_encoder)
5085 ironlake_fdi_disable(crtc);
5087 for_each_encoder_on_crtc(dev, crtc, encoder)
5088 if (encoder->post_disable)
5089 encoder->post_disable(encoder);
5091 if (intel_crtc->config->has_pch_encoder) {
5092 ironlake_disable_pch_transcoder(dev_priv, pipe);
5094 if (HAS_PCH_CPT(dev)) {
5095 /* disable TRANS_DP_CTL */
5096 reg = TRANS_DP_CTL(pipe);
5097 temp = I915_READ(reg);
5098 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
5099 TRANS_DP_PORT_SEL_MASK);
5100 temp |= TRANS_DP_PORT_SEL_NONE;
5101 I915_WRITE(reg, temp);
5103 /* disable DPLL_SEL */
5104 temp = I915_READ(PCH_DPLL_SEL);
5105 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
5106 I915_WRITE(PCH_DPLL_SEL, temp);
5109 ironlake_fdi_pll_disable(intel_crtc);
5113 static void haswell_crtc_disable(struct drm_crtc *crtc)
5115 struct drm_device *dev = crtc->dev;
5116 struct drm_i915_private *dev_priv = dev->dev_private;
5117 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5118 struct intel_encoder *encoder;
5119 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
5120 bool is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
5122 for_each_encoder_on_crtc(dev, crtc, encoder) {
5123 intel_opregion_notify_encoder(encoder, false);
5124 encoder->disable(encoder);
5127 drm_crtc_vblank_off(crtc);
5128 assert_vblank_disabled(crtc);
5130 if (intel_crtc->config->has_pch_encoder)
5131 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5133 intel_disable_pipe(intel_crtc);
5135 if (intel_crtc->config->dp_encoder_is_mst)
5136 intel_ddi_set_vc_payload_alloc(crtc, false);
5139 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
5141 if (INTEL_INFO(dev)->gen >= 9)
5142 skylake_scaler_disable(intel_crtc);
5144 ironlake_pfit_disable(intel_crtc, false);
5147 intel_ddi_disable_pipe_clock(intel_crtc);
5149 if (intel_crtc->config->has_pch_encoder) {
5150 lpt_disable_pch_transcoder(dev_priv);
5151 intel_ddi_fdi_disable(crtc);
5154 for_each_encoder_on_crtc(dev, crtc, encoder)
5155 if (encoder->post_disable)
5156 encoder->post_disable(encoder);
5159 static void i9xx_pfit_enable(struct intel_crtc *crtc)
5161 struct drm_device *dev = crtc->base.dev;
5162 struct drm_i915_private *dev_priv = dev->dev_private;
5163 struct intel_crtc_state *pipe_config = crtc->config;
5165 if (!pipe_config->gmch_pfit.control)
5169 * The panel fitter should only be adjusted whilst the pipe is disabled,
5170 * according to register description and PRM.
5172 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
5173 assert_pipe_disabled(dev_priv, crtc->pipe);
5175 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
5176 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
5178 /* Border color in case we don't scale up to the full screen. Black by
5179 * default, change to something else for debugging. */
5180 I915_WRITE(BCLRPAT(crtc->pipe), 0);
5183 static enum intel_display_power_domain port_to_power_domain(enum port port)
5187 return POWER_DOMAIN_PORT_DDI_A_4_LANES;
5189 return POWER_DOMAIN_PORT_DDI_B_4_LANES;
5191 return POWER_DOMAIN_PORT_DDI_C_4_LANES;
5193 return POWER_DOMAIN_PORT_DDI_D_4_LANES;
5195 return POWER_DOMAIN_PORT_DDI_E_2_LANES;
5198 return POWER_DOMAIN_PORT_OTHER;
5202 #define for_each_power_domain(domain, mask) \
5203 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
5204 if ((1 << (domain)) & (mask))
5206 enum intel_display_power_domain
5207 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
5209 struct drm_device *dev = intel_encoder->base.dev;
5210 struct intel_digital_port *intel_dig_port;
5212 switch (intel_encoder->type) {
5213 case INTEL_OUTPUT_UNKNOWN:
5214 /* Only DDI platforms should ever use this output type */
5215 WARN_ON_ONCE(!HAS_DDI(dev));
5216 case INTEL_OUTPUT_DISPLAYPORT:
5217 case INTEL_OUTPUT_HDMI:
5218 case INTEL_OUTPUT_EDP:
5219 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
5220 return port_to_power_domain(intel_dig_port->port);
5221 case INTEL_OUTPUT_DP_MST:
5222 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5223 return port_to_power_domain(intel_dig_port->port);
5224 case INTEL_OUTPUT_ANALOG:
5225 return POWER_DOMAIN_PORT_CRT;
5226 case INTEL_OUTPUT_DSI:
5227 return POWER_DOMAIN_PORT_DSI;
5229 return POWER_DOMAIN_PORT_OTHER;
5233 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
5235 struct drm_device *dev = crtc->dev;
5236 struct intel_encoder *intel_encoder;
5237 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5238 enum pipe pipe = intel_crtc->pipe;
5240 enum transcoder transcoder;
5242 if (!crtc->state->active)
5245 transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
5247 mask = BIT(POWER_DOMAIN_PIPE(pipe));
5248 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
5249 if (intel_crtc->config->pch_pfit.enabled ||
5250 intel_crtc->config->pch_pfit.force_thru)
5251 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
5253 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
5254 mask |= BIT(intel_display_port_power_domain(intel_encoder));
5259 static unsigned long modeset_get_crtc_power_domains(struct drm_crtc *crtc)
5261 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
5262 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5263 enum intel_display_power_domain domain;
5264 unsigned long domains, new_domains, old_domains;
5266 old_domains = intel_crtc->enabled_power_domains;
5267 intel_crtc->enabled_power_domains = new_domains = get_crtc_power_domains(crtc);
5269 domains = new_domains & ~old_domains;
5271 for_each_power_domain(domain, domains)
5272 intel_display_power_get(dev_priv, domain);
5274 return old_domains & ~new_domains;
5277 static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
5278 unsigned long domains)
5280 enum intel_display_power_domain domain;
5282 for_each_power_domain(domain, domains)
5283 intel_display_power_put(dev_priv, domain);
5286 static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
5288 struct drm_device *dev = state->dev;
5289 struct drm_i915_private *dev_priv = dev->dev_private;
5290 unsigned long put_domains[I915_MAX_PIPES] = {};
5291 struct drm_crtc_state *crtc_state;
5292 struct drm_crtc *crtc;
5295 for_each_crtc_in_state(state, crtc, crtc_state, i) {
5296 if (needs_modeset(crtc->state))
5297 put_domains[to_intel_crtc(crtc)->pipe] =
5298 modeset_get_crtc_power_domains(crtc);
5301 if (dev_priv->display.modeset_commit_cdclk) {
5302 unsigned int cdclk = to_intel_atomic_state(state)->cdclk;
5304 if (cdclk != dev_priv->cdclk_freq &&
5305 !WARN_ON(!state->allow_modeset))
5306 dev_priv->display.modeset_commit_cdclk(state);
5309 for (i = 0; i < I915_MAX_PIPES; i++)
5311 modeset_put_power_domains(dev_priv, put_domains[i]);
5314 static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
5316 int max_cdclk_freq = dev_priv->max_cdclk_freq;
5318 if (INTEL_INFO(dev_priv)->gen >= 9 ||
5319 IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
5320 return max_cdclk_freq;
5321 else if (IS_CHERRYVIEW(dev_priv))
5322 return max_cdclk_freq*95/100;
5323 else if (INTEL_INFO(dev_priv)->gen < 4)
5324 return 2*max_cdclk_freq*90/100;
5326 return max_cdclk_freq*90/100;
5329 static void intel_update_max_cdclk(struct drm_device *dev)
5331 struct drm_i915_private *dev_priv = dev->dev_private;
5333 if (IS_SKYLAKE(dev)) {
5334 u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
5336 if (limit == SKL_DFSM_CDCLK_LIMIT_675)
5337 dev_priv->max_cdclk_freq = 675000;
5338 else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
5339 dev_priv->max_cdclk_freq = 540000;
5340 else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
5341 dev_priv->max_cdclk_freq = 450000;
5343 dev_priv->max_cdclk_freq = 337500;
5344 } else if (IS_BROADWELL(dev)) {
5346 * FIXME with extra cooling we can allow
5347 * 540 MHz for ULX and 675 Mhz for ULT.
5348 * How can we know if extra cooling is
5349 * available? PCI ID, VTB, something else?
5351 if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
5352 dev_priv->max_cdclk_freq = 450000;
5353 else if (IS_BDW_ULX(dev))
5354 dev_priv->max_cdclk_freq = 450000;
5355 else if (IS_BDW_ULT(dev))
5356 dev_priv->max_cdclk_freq = 540000;
5358 dev_priv->max_cdclk_freq = 675000;
5359 } else if (IS_CHERRYVIEW(dev)) {
5360 dev_priv->max_cdclk_freq = 320000;
5361 } else if (IS_VALLEYVIEW(dev)) {
5362 dev_priv->max_cdclk_freq = 400000;
5364 /* otherwise assume cdclk is fixed */
5365 dev_priv->max_cdclk_freq = dev_priv->cdclk_freq;
5368 dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv);
5370 DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n",
5371 dev_priv->max_cdclk_freq);
5373 DRM_DEBUG_DRIVER("Max dotclock rate: %d kHz\n",
5374 dev_priv->max_dotclk_freq);
5377 static void intel_update_cdclk(struct drm_device *dev)
5379 struct drm_i915_private *dev_priv = dev->dev_private;
5381 dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
5382 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
5383 dev_priv->cdclk_freq);
5386 * Program the gmbus_freq based on the cdclk frequency.
5387 * BSpec erroneously claims we should aim for 4MHz, but
5388 * in fact 1MHz is the correct frequency.
5390 if (IS_VALLEYVIEW(dev)) {
5392 * Program the gmbus_freq based on the cdclk frequency.
5393 * BSpec erroneously claims we should aim for 4MHz, but
5394 * in fact 1MHz is the correct frequency.
5396 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
5399 if (dev_priv->max_cdclk_freq == 0)
5400 intel_update_max_cdclk(dev);
5403 static void broxton_set_cdclk(struct drm_device *dev, int frequency)
5405 struct drm_i915_private *dev_priv = dev->dev_private;
5408 uint32_t current_freq;
5411 /* frequency = 19.2MHz * ratio / 2 / div{1,1.5,2,4} */
5412 switch (frequency) {
5414 divider = BXT_CDCLK_CD2X_DIV_SEL_4;
5415 ratio = BXT_DE_PLL_RATIO(60);
5418 divider = BXT_CDCLK_CD2X_DIV_SEL_2;
5419 ratio = BXT_DE_PLL_RATIO(60);
5422 divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
5423 ratio = BXT_DE_PLL_RATIO(60);
5426 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5427 ratio = BXT_DE_PLL_RATIO(60);
5430 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5431 ratio = BXT_DE_PLL_RATIO(65);
5435 * Bypass frequency with DE PLL disabled. Init ratio, divider
5436 * to suppress GCC warning.
5442 DRM_ERROR("unsupported CDCLK freq %d", frequency);
5447 mutex_lock(&dev_priv->rps.hw_lock);
5448 /* Inform power controller of upcoming frequency change */
5449 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5451 mutex_unlock(&dev_priv->rps.hw_lock);
5454 DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
5459 current_freq = I915_READ(CDCLK_CTL) & CDCLK_FREQ_DECIMAL_MASK;
5460 /* convert from .1 fixpoint MHz with -1MHz offset to kHz */
5461 current_freq = current_freq * 500 + 1000;
5464 * DE PLL has to be disabled when
5465 * - setting to 19.2MHz (bypass, PLL isn't used)
5466 * - before setting to 624MHz (PLL needs toggling)
5467 * - before setting to any frequency from 624MHz (PLL needs toggling)
5469 if (frequency == 19200 || frequency == 624000 ||
5470 current_freq == 624000) {
5471 I915_WRITE(BXT_DE_PLL_ENABLE, ~BXT_DE_PLL_PLL_ENABLE);
5473 if (wait_for(!(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK),
5475 DRM_ERROR("timout waiting for DE PLL unlock\n");
5478 if (frequency != 19200) {
5481 val = I915_READ(BXT_DE_PLL_CTL);
5482 val &= ~BXT_DE_PLL_RATIO_MASK;
5484 I915_WRITE(BXT_DE_PLL_CTL, val);
5486 I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
5488 if (wait_for(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK, 1))
5489 DRM_ERROR("timeout waiting for DE PLL lock\n");
5491 val = I915_READ(CDCLK_CTL);
5492 val &= ~BXT_CDCLK_CD2X_DIV_SEL_MASK;
5495 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5498 val &= ~BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5499 if (frequency >= 500000)
5500 val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5502 val &= ~CDCLK_FREQ_DECIMAL_MASK;
5503 /* convert from kHz to .1 fixpoint MHz with -1MHz offset */
5504 val |= (frequency - 1000) / 500;
5505 I915_WRITE(CDCLK_CTL, val);
5508 mutex_lock(&dev_priv->rps.hw_lock);
5509 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5510 DIV_ROUND_UP(frequency, 25000));
5511 mutex_unlock(&dev_priv->rps.hw_lock);
5514 DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
5519 intel_update_cdclk(dev);
5522 void broxton_init_cdclk(struct drm_device *dev)
5524 struct drm_i915_private *dev_priv = dev->dev_private;
5528 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
5529 * or else the reset will hang because there is no PCH to respond.
5530 * Move the handshake programming to initialization sequence.
5531 * Previously was left up to BIOS.
5533 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5534 val &= ~RESET_PCH_HANDSHAKE_ENABLE;
5535 I915_WRITE(HSW_NDE_RSTWRN_OPT, val);
5537 /* Enable PG1 for cdclk */
5538 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5540 /* check if cd clock is enabled */
5541 if (I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_PLL_ENABLE) {
5542 DRM_DEBUG_KMS("Display already initialized\n");
5548 * - The initial CDCLK needs to be read from VBT.
5549 * Need to make this change after VBT has changes for BXT.
5550 * - check if setting the max (or any) cdclk freq is really necessary
5551 * here, it belongs to modeset time
5553 broxton_set_cdclk(dev, 624000);
5555 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5556 POSTING_READ(DBUF_CTL);
5560 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5561 DRM_ERROR("DBuf power enable timeout!\n");
5564 void broxton_uninit_cdclk(struct drm_device *dev)
5566 struct drm_i915_private *dev_priv = dev->dev_private;
5568 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5569 POSTING_READ(DBUF_CTL);
5573 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5574 DRM_ERROR("DBuf power disable timeout!\n");
5576 /* Set minimum (bypass) frequency, in effect turning off the DE PLL */
5577 broxton_set_cdclk(dev, 19200);
5579 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5582 static const struct skl_cdclk_entry {
5585 } skl_cdclk_frequencies[] = {
5586 { .freq = 308570, .vco = 8640 },
5587 { .freq = 337500, .vco = 8100 },
5588 { .freq = 432000, .vco = 8640 },
5589 { .freq = 450000, .vco = 8100 },
5590 { .freq = 540000, .vco = 8100 },
5591 { .freq = 617140, .vco = 8640 },
5592 { .freq = 675000, .vco = 8100 },
5595 static unsigned int skl_cdclk_decimal(unsigned int freq)
5597 return (freq - 1000) / 500;
5600 static unsigned int skl_cdclk_get_vco(unsigned int freq)
5604 for (i = 0; i < ARRAY_SIZE(skl_cdclk_frequencies); i++) {
5605 const struct skl_cdclk_entry *e = &skl_cdclk_frequencies[i];
5607 if (e->freq == freq)
5615 skl_dpll0_enable(struct drm_i915_private *dev_priv, unsigned int required_vco)
5617 unsigned int min_freq;
5620 /* select the minimum CDCLK before enabling DPLL 0 */
5621 val = I915_READ(CDCLK_CTL);
5622 val &= ~CDCLK_FREQ_SEL_MASK | ~CDCLK_FREQ_DECIMAL_MASK;
5623 val |= CDCLK_FREQ_337_308;
5625 if (required_vco == 8640)
5630 val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_freq);
5632 I915_WRITE(CDCLK_CTL, val);
5633 POSTING_READ(CDCLK_CTL);
5636 * We always enable DPLL0 with the lowest link rate possible, but still
5637 * taking into account the VCO required to operate the eDP panel at the
5638 * desired frequency. The usual DP link rates operate with a VCO of
5639 * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
5640 * The modeset code is responsible for the selection of the exact link
5641 * rate later on, with the constraint of choosing a frequency that
5642 * works with required_vco.
5644 val = I915_READ(DPLL_CTRL1);
5646 val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) |
5647 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
5648 val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0);
5649 if (required_vco == 8640)
5650 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080,
5653 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810,
5656 I915_WRITE(DPLL_CTRL1, val);
5657 POSTING_READ(DPLL_CTRL1);
5659 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
5661 if (wait_for(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK, 5))
5662 DRM_ERROR("DPLL0 not locked\n");
5665 static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
5670 /* inform PCU we want to change CDCLK */
5671 val = SKL_CDCLK_PREPARE_FOR_CHANGE;
5672 mutex_lock(&dev_priv->rps.hw_lock);
5673 ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val);
5674 mutex_unlock(&dev_priv->rps.hw_lock);
5676 return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE);
5679 static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
5683 for (i = 0; i < 15; i++) {
5684 if (skl_cdclk_pcu_ready(dev_priv))
5692 static void skl_set_cdclk(struct drm_i915_private *dev_priv, unsigned int freq)
5694 struct drm_device *dev = dev_priv->dev;
5695 u32 freq_select, pcu_ack;
5697 DRM_DEBUG_DRIVER("Changing CDCLK to %dKHz\n", freq);
5699 if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) {
5700 DRM_ERROR("failed to inform PCU about cdclk change\n");
5708 freq_select = CDCLK_FREQ_450_432;
5712 freq_select = CDCLK_FREQ_540;
5718 freq_select = CDCLK_FREQ_337_308;
5723 freq_select = CDCLK_FREQ_675_617;
5728 I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(freq));
5729 POSTING_READ(CDCLK_CTL);
5731 /* inform PCU of the change */
5732 mutex_lock(&dev_priv->rps.hw_lock);
5733 sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
5734 mutex_unlock(&dev_priv->rps.hw_lock);
5736 intel_update_cdclk(dev);
5739 void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
5741 /* disable DBUF power */
5742 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5743 POSTING_READ(DBUF_CTL);
5747 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5748 DRM_ERROR("DBuf power disable timeout\n");
5751 * DMC assumes ownership of LCPLL and will get confused if we touch it.
5753 if (dev_priv->csr.dmc_payload) {
5755 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) &
5757 if (wait_for(!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK), 1))
5758 DRM_ERROR("Couldn't disable DPLL0\n");
5761 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5764 void skl_init_cdclk(struct drm_i915_private *dev_priv)
5767 unsigned int required_vco;
5769 /* enable PCH reset handshake */
5770 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5771 I915_WRITE(HSW_NDE_RSTWRN_OPT, val | RESET_PCH_HANDSHAKE_ENABLE);
5773 /* enable PG1 and Misc I/O */
5774 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5776 /* DPLL0 not enabled (happens on early BIOS versions) */
5777 if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) {
5779 required_vco = skl_cdclk_get_vco(dev_priv->skl_boot_cdclk);
5780 skl_dpll0_enable(dev_priv, required_vco);
5783 /* set CDCLK to the frequency the BIOS chose */
5784 skl_set_cdclk(dev_priv, dev_priv->skl_boot_cdclk);
5786 /* enable DBUF power */
5787 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5788 POSTING_READ(DBUF_CTL);
5792 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5793 DRM_ERROR("DBuf power enable timeout\n");
5796 /* Adjust CDclk dividers to allow high res or save power if possible */
5797 static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
5799 struct drm_i915_private *dev_priv = dev->dev_private;
5802 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5803 != dev_priv->cdclk_freq);
5805 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
5807 else if (cdclk == 266667)
5812 mutex_lock(&dev_priv->rps.hw_lock);
5813 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5814 val &= ~DSPFREQGUAR_MASK;
5815 val |= (cmd << DSPFREQGUAR_SHIFT);
5816 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5817 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5818 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
5820 DRM_ERROR("timed out waiting for CDclk change\n");
5822 mutex_unlock(&dev_priv->rps.hw_lock);
5824 mutex_lock(&dev_priv->sb_lock);
5826 if (cdclk == 400000) {
5829 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5831 /* adjust cdclk divider */
5832 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
5833 val &= ~CCK_FREQUENCY_VALUES;
5835 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
5837 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
5838 CCK_FREQUENCY_STATUS) == (divider << CCK_FREQUENCY_STATUS_SHIFT),
5840 DRM_ERROR("timed out waiting for CDclk change\n");
5843 /* adjust self-refresh exit latency value */
5844 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
5848 * For high bandwidth configs, we set a higher latency in the bunit
5849 * so that the core display fetch happens in time to avoid underruns.
5851 if (cdclk == 400000)
5852 val |= 4500 / 250; /* 4.5 usec */
5854 val |= 3000 / 250; /* 3.0 usec */
5855 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
5857 mutex_unlock(&dev_priv->sb_lock);
5859 intel_update_cdclk(dev);
5862 static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
5864 struct drm_i915_private *dev_priv = dev->dev_private;
5867 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5868 != dev_priv->cdclk_freq);
5877 MISSING_CASE(cdclk);
5882 * Specs are full of misinformation, but testing on actual
5883 * hardware has shown that we just need to write the desired
5884 * CCK divider into the Punit register.
5886 cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5888 mutex_lock(&dev_priv->rps.hw_lock);
5889 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5890 val &= ~DSPFREQGUAR_MASK_CHV;
5891 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
5892 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5893 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5894 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
5896 DRM_ERROR("timed out waiting for CDclk change\n");
5898 mutex_unlock(&dev_priv->rps.hw_lock);
5900 intel_update_cdclk(dev);
5903 static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5906 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
5907 int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
5910 * Really only a few cases to deal with, as only 4 CDclks are supported:
5913 * 320/333MHz (depends on HPLL freq)
5915 * So we check to see whether we're above 90% (VLV) or 95% (CHV)
5916 * of the lower bin and adjust if needed.
5918 * We seem to get an unstable or solid color picture at 200MHz.
5919 * Not sure what's wrong. For now use 200MHz only when all pipes
5922 if (!IS_CHERRYVIEW(dev_priv) &&
5923 max_pixclk > freq_320*limit/100)
5925 else if (max_pixclk > 266667*limit/100)
5927 else if (max_pixclk > 0)
5933 static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
5938 * - remove the guardband, it's not needed on BXT
5939 * - set 19.2MHz bypass frequency if there are no active pipes
5941 if (max_pixclk > 576000*9/10)
5943 else if (max_pixclk > 384000*9/10)
5945 else if (max_pixclk > 288000*9/10)
5947 else if (max_pixclk > 144000*9/10)
5953 /* Compute the max pixel clock for new configuration. Uses atomic state if
5954 * that's non-NULL, look at current state otherwise. */
5955 static int intel_mode_max_pixclk(struct drm_device *dev,
5956 struct drm_atomic_state *state)
5958 struct intel_crtc *intel_crtc;
5959 struct intel_crtc_state *crtc_state;
5962 for_each_intel_crtc(dev, intel_crtc) {
5963 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
5964 if (IS_ERR(crtc_state))
5965 return PTR_ERR(crtc_state);
5967 if (!crtc_state->base.enable)
5970 max_pixclk = max(max_pixclk,
5971 crtc_state->base.adjusted_mode.crtc_clock);
5977 static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
5979 struct drm_device *dev = state->dev;
5980 struct drm_i915_private *dev_priv = dev->dev_private;
5981 int max_pixclk = intel_mode_max_pixclk(dev, state);
5986 to_intel_atomic_state(state)->cdclk =
5987 valleyview_calc_cdclk(dev_priv, max_pixclk);
5992 static int broxton_modeset_calc_cdclk(struct drm_atomic_state *state)
5994 struct drm_device *dev = state->dev;
5995 struct drm_i915_private *dev_priv = dev->dev_private;
5996 int max_pixclk = intel_mode_max_pixclk(dev, state);
6001 to_intel_atomic_state(state)->cdclk =
6002 broxton_calc_cdclk(dev_priv, max_pixclk);
6007 static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
6009 unsigned int credits, default_credits;
6011 if (IS_CHERRYVIEW(dev_priv))
6012 default_credits = PFI_CREDIT(12);
6014 default_credits = PFI_CREDIT(8);
6016 if (dev_priv->cdclk_freq >= dev_priv->czclk_freq) {
6017 /* CHV suggested value is 31 or 63 */
6018 if (IS_CHERRYVIEW(dev_priv))
6019 credits = PFI_CREDIT_63;
6021 credits = PFI_CREDIT(15);
6023 credits = default_credits;
6027 * WA - write default credits before re-programming
6028 * FIXME: should we also set the resend bit here?
6030 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
6033 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
6034 credits | PFI_CREDIT_RESEND);
6037 * FIXME is this guaranteed to clear
6038 * immediately or should we poll for it?
6040 WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
6043 static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state)
6045 struct drm_device *dev = old_state->dev;
6046 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
6047 struct drm_i915_private *dev_priv = dev->dev_private;
6050 * FIXME: We can end up here with all power domains off, yet
6051 * with a CDCLK frequency other than the minimum. To account
6052 * for this take the PIPE-A power domain, which covers the HW
6053 * blocks needed for the following programming. This can be
6054 * removed once it's guaranteed that we get here either with
6055 * the minimum CDCLK set, or the required power domains
6058 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
6060 if (IS_CHERRYVIEW(dev))
6061 cherryview_set_cdclk(dev, req_cdclk);
6063 valleyview_set_cdclk(dev, req_cdclk);
6065 vlv_program_pfi_credits(dev_priv);
6067 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
6070 static void valleyview_crtc_enable(struct drm_crtc *crtc)
6072 struct drm_device *dev = crtc->dev;
6073 struct drm_i915_private *dev_priv = to_i915(dev);
6074 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6075 struct intel_encoder *encoder;
6076 int pipe = intel_crtc->pipe;
6079 if (WARN_ON(intel_crtc->active))
6082 is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
6084 if (intel_crtc->config->has_dp_encoder)
6085 intel_dp_set_m_n(intel_crtc, M1_N1);
6087 intel_set_pipe_timings(intel_crtc);
6089 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
6090 struct drm_i915_private *dev_priv = dev->dev_private;
6092 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
6093 I915_WRITE(CHV_CANVAS(pipe), 0);
6096 i9xx_set_pipeconf(intel_crtc);
6098 intel_crtc->active = true;
6100 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6102 for_each_encoder_on_crtc(dev, crtc, encoder)
6103 if (encoder->pre_pll_enable)
6104 encoder->pre_pll_enable(encoder);
6107 if (IS_CHERRYVIEW(dev)) {
6108 chv_prepare_pll(intel_crtc, intel_crtc->config);
6109 chv_enable_pll(intel_crtc, intel_crtc->config);
6111 vlv_prepare_pll(intel_crtc, intel_crtc->config);
6112 vlv_enable_pll(intel_crtc, intel_crtc->config);
6116 for_each_encoder_on_crtc(dev, crtc, encoder)
6117 if (encoder->pre_enable)
6118 encoder->pre_enable(encoder);
6120 i9xx_pfit_enable(intel_crtc);
6122 intel_crtc_load_lut(crtc);
6124 intel_enable_pipe(intel_crtc);
6126 assert_vblank_disabled(crtc);
6127 drm_crtc_vblank_on(crtc);
6129 for_each_encoder_on_crtc(dev, crtc, encoder)
6130 encoder->enable(encoder);
6133 static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
6135 struct drm_device *dev = crtc->base.dev;
6136 struct drm_i915_private *dev_priv = dev->dev_private;
6138 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
6139 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
6142 static void i9xx_crtc_enable(struct drm_crtc *crtc)
6144 struct drm_device *dev = crtc->dev;
6145 struct drm_i915_private *dev_priv = to_i915(dev);
6146 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6147 struct intel_encoder *encoder;
6148 int pipe = intel_crtc->pipe;
6150 if (WARN_ON(intel_crtc->active))
6153 i9xx_set_pll_dividers(intel_crtc);
6155 if (intel_crtc->config->has_dp_encoder)
6156 intel_dp_set_m_n(intel_crtc, M1_N1);
6158 intel_set_pipe_timings(intel_crtc);
6160 i9xx_set_pipeconf(intel_crtc);
6162 intel_crtc->active = true;
6165 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6167 for_each_encoder_on_crtc(dev, crtc, encoder)
6168 if (encoder->pre_enable)
6169 encoder->pre_enable(encoder);
6171 i9xx_enable_pll(intel_crtc);
6173 i9xx_pfit_enable(intel_crtc);
6175 intel_crtc_load_lut(crtc);
6177 intel_update_watermarks(crtc);
6178 intel_enable_pipe(intel_crtc);
6180 assert_vblank_disabled(crtc);
6181 drm_crtc_vblank_on(crtc);
6183 for_each_encoder_on_crtc(dev, crtc, encoder)
6184 encoder->enable(encoder);
6187 static void i9xx_pfit_disable(struct intel_crtc *crtc)
6189 struct drm_device *dev = crtc->base.dev;
6190 struct drm_i915_private *dev_priv = dev->dev_private;
6192 if (!crtc->config->gmch_pfit.control)
6195 assert_pipe_disabled(dev_priv, crtc->pipe);
6197 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
6198 I915_READ(PFIT_CONTROL));
6199 I915_WRITE(PFIT_CONTROL, 0);
6202 static void i9xx_crtc_disable(struct drm_crtc *crtc)
6204 struct drm_device *dev = crtc->dev;
6205 struct drm_i915_private *dev_priv = dev->dev_private;
6206 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6207 struct intel_encoder *encoder;
6208 int pipe = intel_crtc->pipe;
6211 * On gen2 planes are double buffered but the pipe isn't, so we must
6212 * wait for planes to fully turn off before disabling the pipe.
6213 * We also need to wait on all gmch platforms because of the
6214 * self-refresh mode constraint explained above.
6216 intel_wait_for_vblank(dev, pipe);
6218 for_each_encoder_on_crtc(dev, crtc, encoder)
6219 encoder->disable(encoder);
6221 drm_crtc_vblank_off(crtc);
6222 assert_vblank_disabled(crtc);
6224 intel_disable_pipe(intel_crtc);
6226 i9xx_pfit_disable(intel_crtc);
6228 for_each_encoder_on_crtc(dev, crtc, encoder)
6229 if (encoder->post_disable)
6230 encoder->post_disable(encoder);
6232 if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
6233 if (IS_CHERRYVIEW(dev))
6234 chv_disable_pll(dev_priv, pipe);
6235 else if (IS_VALLEYVIEW(dev))
6236 vlv_disable_pll(dev_priv, pipe);
6238 i9xx_disable_pll(intel_crtc);
6241 for_each_encoder_on_crtc(dev, crtc, encoder)
6242 if (encoder->post_pll_disable)
6243 encoder->post_pll_disable(encoder);
6246 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6249 static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
6251 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6252 struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6253 enum intel_display_power_domain domain;
6254 unsigned long domains;
6256 if (!intel_crtc->active)
6259 if (to_intel_plane_state(crtc->primary->state)->visible) {
6260 intel_crtc_wait_for_pending_flips(crtc);
6261 intel_pre_disable_primary(crtc);
6264 intel_crtc_disable_planes(crtc, crtc->state->plane_mask);
6265 dev_priv->display.crtc_disable(crtc);
6266 intel_crtc->active = false;
6267 intel_update_watermarks(crtc);
6268 intel_disable_shared_dpll(intel_crtc);
6270 domains = intel_crtc->enabled_power_domains;
6271 for_each_power_domain(domain, domains)
6272 intel_display_power_put(dev_priv, domain);
6273 intel_crtc->enabled_power_domains = 0;
6277 * turn all crtc's off, but do not adjust state
6278 * This has to be paired with a call to intel_modeset_setup_hw_state.
6280 int intel_display_suspend(struct drm_device *dev)
6282 struct drm_mode_config *config = &dev->mode_config;
6283 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
6284 struct drm_atomic_state *state;
6285 struct drm_crtc *crtc;
6286 unsigned crtc_mask = 0;
6292 lockdep_assert_held(&ctx->ww_ctx);
6293 state = drm_atomic_state_alloc(dev);
6294 if (WARN_ON(!state))
6297 state->acquire_ctx = ctx;
6298 state->allow_modeset = true;
6300 for_each_crtc(dev, crtc) {
6301 struct drm_crtc_state *crtc_state =
6302 drm_atomic_get_crtc_state(state, crtc);
6304 ret = PTR_ERR_OR_ZERO(crtc_state);
6308 if (!crtc_state->active)
6311 crtc_state->active = false;
6312 crtc_mask |= 1 << drm_crtc_index(crtc);
6316 ret = drm_atomic_commit(state);
6319 for_each_crtc(dev, crtc)
6320 if (crtc_mask & (1 << drm_crtc_index(crtc)))
6321 crtc->state->active = true;
6329 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
6330 drm_atomic_state_free(state);
6334 void intel_encoder_destroy(struct drm_encoder *encoder)
6336 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6338 drm_encoder_cleanup(encoder);
6339 kfree(intel_encoder);
6342 /* Cross check the actual hw state with our own modeset state tracking (and it's
6343 * internal consistency). */
6344 static void intel_connector_check_state(struct intel_connector *connector)
6346 struct drm_crtc *crtc = connector->base.state->crtc;
6348 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6349 connector->base.base.id,
6350 connector->base.name);
6352 if (connector->get_hw_state(connector)) {
6353 struct intel_encoder *encoder = connector->encoder;
6354 struct drm_connector_state *conn_state = connector->base.state;
6356 I915_STATE_WARN(!crtc,
6357 "connector enabled without attached crtc\n");
6362 I915_STATE_WARN(!crtc->state->active,
6363 "connector is active, but attached crtc isn't\n");
6365 if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
6368 I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
6369 "atomic encoder doesn't match attached encoder\n");
6371 I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
6372 "attached encoder crtc differs from connector crtc\n");
6374 I915_STATE_WARN(crtc && crtc->state->active,
6375 "attached crtc is active, but connector isn't\n");
6376 I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
6377 "best encoder set without crtc!\n");
6381 int intel_connector_init(struct intel_connector *connector)
6383 struct drm_connector_state *connector_state;
6385 connector_state = kzalloc(sizeof *connector_state, GFP_KERNEL);
6386 if (!connector_state)
6389 connector->base.state = connector_state;
6393 struct intel_connector *intel_connector_alloc(void)
6395 struct intel_connector *connector;
6397 connector = kzalloc(sizeof *connector, GFP_KERNEL);
6401 if (intel_connector_init(connector) < 0) {
6409 /* Simple connector->get_hw_state implementation for encoders that support only
6410 * one connector and no cloning and hence the encoder state determines the state
6411 * of the connector. */
6412 bool intel_connector_get_hw_state(struct intel_connector *connector)
6415 struct intel_encoder *encoder = connector->encoder;
6417 return encoder->get_hw_state(encoder, &pipe);
6420 static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
6422 if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6423 return crtc_state->fdi_lanes;
6428 static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
6429 struct intel_crtc_state *pipe_config)
6431 struct drm_atomic_state *state = pipe_config->base.state;
6432 struct intel_crtc *other_crtc;
6433 struct intel_crtc_state *other_crtc_state;
6435 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6436 pipe_name(pipe), pipe_config->fdi_lanes);
6437 if (pipe_config->fdi_lanes > 4) {
6438 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6439 pipe_name(pipe), pipe_config->fdi_lanes);
6443 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
6444 if (pipe_config->fdi_lanes > 2) {
6445 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6446 pipe_config->fdi_lanes);
6453 if (INTEL_INFO(dev)->num_pipes == 2)
6456 /* Ivybridge 3 pipe is really complicated */
6461 if (pipe_config->fdi_lanes <= 2)
6464 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
6466 intel_atomic_get_crtc_state(state, other_crtc);
6467 if (IS_ERR(other_crtc_state))
6468 return PTR_ERR(other_crtc_state);
6470 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
6471 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6472 pipe_name(pipe), pipe_config->fdi_lanes);
6477 if (pipe_config->fdi_lanes > 2) {
6478 DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6479 pipe_name(pipe), pipe_config->fdi_lanes);
6483 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
6485 intel_atomic_get_crtc_state(state, other_crtc);
6486 if (IS_ERR(other_crtc_state))
6487 return PTR_ERR(other_crtc_state);
6489 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
6490 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6500 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
6501 struct intel_crtc_state *pipe_config)
6503 struct drm_device *dev = intel_crtc->base.dev;
6504 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6505 int lane, link_bw, fdi_dotclock, ret;
6506 bool needs_recompute = false;
6509 /* FDI is a binary signal running at ~2.7GHz, encoding
6510 * each output octet as 10 bits. The actual frequency
6511 * is stored as a divider into a 100MHz clock, and the
6512 * mode pixel clock is stored in units of 1KHz.
6513 * Hence the bw of each lane in terms of the mode signal
6516 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
6518 fdi_dotclock = adjusted_mode->crtc_clock;
6520 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
6521 pipe_config->pipe_bpp);
6523 pipe_config->fdi_lanes = lane;
6525 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
6526 link_bw, &pipe_config->fdi_m_n);
6528 ret = ironlake_check_fdi_lanes(intel_crtc->base.dev,
6529 intel_crtc->pipe, pipe_config);
6530 if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
6531 pipe_config->pipe_bpp -= 2*3;
6532 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6533 pipe_config->pipe_bpp);
6534 needs_recompute = true;
6535 pipe_config->bw_constrained = true;
6540 if (needs_recompute)
6546 static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv,
6547 struct intel_crtc_state *pipe_config)
6549 if (pipe_config->pipe_bpp > 24)
6552 /* HSW can handle pixel rate up to cdclk? */
6553 if (IS_HASWELL(dev_priv->dev))
6557 * We compare against max which means we must take
6558 * the increased cdclk requirement into account when
6559 * calculating the new cdclk.
6561 * Should measure whether using a lower cdclk w/o IPS
6563 return ilk_pipe_pixel_rate(pipe_config) <=
6564 dev_priv->max_cdclk_freq * 95 / 100;
6567 static void hsw_compute_ips_config(struct intel_crtc *crtc,
6568 struct intel_crtc_state *pipe_config)
6570 struct drm_device *dev = crtc->base.dev;
6571 struct drm_i915_private *dev_priv = dev->dev_private;
6573 pipe_config->ips_enabled = i915.enable_ips &&
6574 hsw_crtc_supports_ips(crtc) &&
6575 pipe_config_supports_ips(dev_priv, pipe_config);
6578 static int intel_crtc_compute_config(struct intel_crtc *crtc,
6579 struct intel_crtc_state *pipe_config)
6581 struct drm_device *dev = crtc->base.dev;
6582 struct drm_i915_private *dev_priv = dev->dev_private;
6583 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6585 /* FIXME should check pixel clock limits on all platforms */
6586 if (INTEL_INFO(dev)->gen < 4) {
6587 int clock_limit = dev_priv->max_cdclk_freq;
6590 * Enable pixel doubling when the dot clock
6591 * is > 90% of the (display) core speed.
6593 * GDG double wide on either pipe,
6594 * otherwise pipe A only.
6596 if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
6597 adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
6599 pipe_config->double_wide = true;
6602 if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
6607 * Pipe horizontal size must be even in:
6609 * - LVDS dual channel mode
6610 * - Double wide pipe
6612 if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
6613 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
6614 pipe_config->pipe_src_w &= ~1;
6616 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
6617 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
6619 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
6620 adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay)
6624 hsw_compute_ips_config(crtc, pipe_config);
6626 if (pipe_config->has_pch_encoder)
6627 return ironlake_fdi_compute_config(crtc, pipe_config);
6632 static int skylake_get_display_clock_speed(struct drm_device *dev)
6634 struct drm_i915_private *dev_priv = to_i915(dev);
6635 uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
6636 uint32_t cdctl = I915_READ(CDCLK_CTL);
6639 if (!(lcpll1 & LCPLL_PLL_ENABLE))
6640 return 24000; /* 24MHz is the cd freq with NSSC ref */
6642 if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
6645 linkrate = (I915_READ(DPLL_CTRL1) &
6646 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
6648 if (linkrate == DPLL_CTRL1_LINK_RATE_2160 ||
6649 linkrate == DPLL_CTRL1_LINK_RATE_1080) {
6651 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6652 case CDCLK_FREQ_450_432:
6654 case CDCLK_FREQ_337_308:
6656 case CDCLK_FREQ_675_617:
6659 WARN(1, "Unknown cd freq selection\n");
6663 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6664 case CDCLK_FREQ_450_432:
6666 case CDCLK_FREQ_337_308:
6668 case CDCLK_FREQ_675_617:
6671 WARN(1, "Unknown cd freq selection\n");
6675 /* error case, do as if DPLL0 isn't enabled */
6679 static int broxton_get_display_clock_speed(struct drm_device *dev)
6681 struct drm_i915_private *dev_priv = to_i915(dev);
6682 uint32_t cdctl = I915_READ(CDCLK_CTL);
6683 uint32_t pll_ratio = I915_READ(BXT_DE_PLL_CTL) & BXT_DE_PLL_RATIO_MASK;
6684 uint32_t pll_enab = I915_READ(BXT_DE_PLL_ENABLE);
6687 if (!(pll_enab & BXT_DE_PLL_PLL_ENABLE))
6690 cdclk = 19200 * pll_ratio / 2;
6692 switch (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) {
6693 case BXT_CDCLK_CD2X_DIV_SEL_1:
6694 return cdclk; /* 576MHz or 624MHz */
6695 case BXT_CDCLK_CD2X_DIV_SEL_1_5:
6696 return cdclk * 2 / 3; /* 384MHz */
6697 case BXT_CDCLK_CD2X_DIV_SEL_2:
6698 return cdclk / 2; /* 288MHz */
6699 case BXT_CDCLK_CD2X_DIV_SEL_4:
6700 return cdclk / 4; /* 144MHz */
6703 /* error case, do as if DE PLL isn't enabled */
6707 static int broadwell_get_display_clock_speed(struct drm_device *dev)
6709 struct drm_i915_private *dev_priv = dev->dev_private;
6710 uint32_t lcpll = I915_READ(LCPLL_CTL);
6711 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6713 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6715 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6717 else if (freq == LCPLL_CLK_FREQ_450)
6719 else if (freq == LCPLL_CLK_FREQ_54O_BDW)
6721 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
6727 static int haswell_get_display_clock_speed(struct drm_device *dev)
6729 struct drm_i915_private *dev_priv = dev->dev_private;
6730 uint32_t lcpll = I915_READ(LCPLL_CTL);
6731 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6733 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6735 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6737 else if (freq == LCPLL_CLK_FREQ_450)
6739 else if (IS_HSW_ULT(dev))
6745 static int valleyview_get_display_clock_speed(struct drm_device *dev)
6747 return vlv_get_cck_clock_hpll(to_i915(dev), "cdclk",
6748 CCK_DISPLAY_CLOCK_CONTROL);
6751 static int ilk_get_display_clock_speed(struct drm_device *dev)
6756 static int i945_get_display_clock_speed(struct drm_device *dev)
6761 static int i915_get_display_clock_speed(struct drm_device *dev)
6766 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
6771 static int pnv_get_display_clock_speed(struct drm_device *dev)
6775 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6777 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6778 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
6780 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
6782 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
6784 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
6787 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
6788 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
6790 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
6795 static int i915gm_get_display_clock_speed(struct drm_device *dev)
6799 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6801 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
6804 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6805 case GC_DISPLAY_CLOCK_333_MHZ:
6808 case GC_DISPLAY_CLOCK_190_200_MHZ:
6814 static int i865_get_display_clock_speed(struct drm_device *dev)
6819 static int i85x_get_display_clock_speed(struct drm_device *dev)
6824 * 852GM/852GMV only supports 133 MHz and the HPLLCC
6825 * encoding is different :(
6826 * FIXME is this the right way to detect 852GM/852GMV?
6828 if (dev->pdev->revision == 0x1)
6831 pci_bus_read_config_word(dev->pdev->bus,
6832 PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
6834 /* Assume that the hardware is in the high speed state. This
6835 * should be the default.
6837 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
6838 case GC_CLOCK_133_200:
6839 case GC_CLOCK_133_200_2:
6840 case GC_CLOCK_100_200:
6842 case GC_CLOCK_166_250:
6844 case GC_CLOCK_100_133:
6846 case GC_CLOCK_133_266:
6847 case GC_CLOCK_133_266_2:
6848 case GC_CLOCK_166_266:
6852 /* Shouldn't happen */
6856 static int i830_get_display_clock_speed(struct drm_device *dev)
6861 static unsigned int intel_hpll_vco(struct drm_device *dev)
6863 struct drm_i915_private *dev_priv = dev->dev_private;
6864 static const unsigned int blb_vco[8] = {
6871 static const unsigned int pnv_vco[8] = {
6878 static const unsigned int cl_vco[8] = {
6887 static const unsigned int elk_vco[8] = {
6893 static const unsigned int ctg_vco[8] = {
6901 const unsigned int *vco_table;
6905 /* FIXME other chipsets? */
6907 vco_table = ctg_vco;
6908 else if (IS_G4X(dev))
6909 vco_table = elk_vco;
6910 else if (IS_CRESTLINE(dev))
6912 else if (IS_PINEVIEW(dev))
6913 vco_table = pnv_vco;
6914 else if (IS_G33(dev))
6915 vco_table = blb_vco;
6919 tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO);
6921 vco = vco_table[tmp & 0x7];
6923 DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp);
6925 DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco);
6930 static int gm45_get_display_clock_speed(struct drm_device *dev)
6932 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6935 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6937 cdclk_sel = (tmp >> 12) & 0x1;
6943 return cdclk_sel ? 333333 : 222222;
6945 return cdclk_sel ? 320000 : 228571;
6947 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp);
6952 static int i965gm_get_display_clock_speed(struct drm_device *dev)
6954 static const uint8_t div_3200[] = { 16, 10, 8 };
6955 static const uint8_t div_4000[] = { 20, 12, 10 };
6956 static const uint8_t div_5333[] = { 24, 16, 14 };
6957 const uint8_t *div_table;
6958 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6961 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6963 cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
6965 if (cdclk_sel >= ARRAY_SIZE(div_3200))
6970 div_table = div_3200;
6973 div_table = div_4000;
6976 div_table = div_5333;
6982 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
6985 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp);
6989 static int g33_get_display_clock_speed(struct drm_device *dev)
6991 static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 };
6992 static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 };
6993 static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 };
6994 static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 };
6995 const uint8_t *div_table;
6996 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6999 pci_read_config_word(dev->pdev, GCFGC, &tmp);
7001 cdclk_sel = (tmp >> 4) & 0x7;
7003 if (cdclk_sel >= ARRAY_SIZE(div_3200))
7008 div_table = div_3200;
7011 div_table = div_4000;
7014 div_table = div_4800;
7017 div_table = div_5333;
7023 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
7026 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp);
7031 intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
7033 while (*num > DATA_LINK_M_N_MASK ||
7034 *den > DATA_LINK_M_N_MASK) {
7040 static void compute_m_n(unsigned int m, unsigned int n,
7041 uint32_t *ret_m, uint32_t *ret_n)
7043 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
7044 *ret_m = div_u64((uint64_t) m * *ret_n, n);
7045 intel_reduce_m_n_ratio(ret_m, ret_n);
7049 intel_link_compute_m_n(int bits_per_pixel, int nlanes,
7050 int pixel_clock, int link_clock,
7051 struct intel_link_m_n *m_n)
7055 compute_m_n(bits_per_pixel * pixel_clock,
7056 link_clock * nlanes * 8,
7057 &m_n->gmch_m, &m_n->gmch_n);
7059 compute_m_n(pixel_clock, link_clock,
7060 &m_n->link_m, &m_n->link_n);
7063 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
7065 if (i915.panel_use_ssc >= 0)
7066 return i915.panel_use_ssc != 0;
7067 return dev_priv->vbt.lvds_use_ssc
7068 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
7071 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
7074 struct drm_device *dev = crtc_state->base.crtc->dev;
7075 struct drm_i915_private *dev_priv = dev->dev_private;
7078 WARN_ON(!crtc_state->base.state);
7080 if (IS_VALLEYVIEW(dev) || IS_BROXTON(dev)) {
7082 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7083 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
7084 refclk = dev_priv->vbt.lvds_ssc_freq;
7085 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7086 } else if (!IS_GEN2(dev)) {
7095 static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
7097 return (1 << dpll->n) << 16 | dpll->m2;
7100 static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
7102 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
7105 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
7106 struct intel_crtc_state *crtc_state,
7107 intel_clock_t *reduced_clock)
7109 struct drm_device *dev = crtc->base.dev;
7112 if (IS_PINEVIEW(dev)) {
7113 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
7115 fp2 = pnv_dpll_compute_fp(reduced_clock);
7117 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7119 fp2 = i9xx_dpll_compute_fp(reduced_clock);
7122 crtc_state->dpll_hw_state.fp0 = fp;
7124 crtc->lowfreq_avail = false;
7125 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7127 crtc_state->dpll_hw_state.fp1 = fp2;
7128 crtc->lowfreq_avail = true;
7130 crtc_state->dpll_hw_state.fp1 = fp;
7134 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
7140 * PLLB opamp always calibrates to max value of 0x3f, force enable it
7141 * and set it to a reasonable value instead.
7143 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7144 reg_val &= 0xffffff00;
7145 reg_val |= 0x00000030;
7146 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7148 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7149 reg_val &= 0x8cffffff;
7150 reg_val = 0x8c000000;
7151 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7153 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7154 reg_val &= 0xffffff00;
7155 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7157 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7158 reg_val &= 0x00ffffff;
7159 reg_val |= 0xb0000000;
7160 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7163 static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
7164 struct intel_link_m_n *m_n)
7166 struct drm_device *dev = crtc->base.dev;
7167 struct drm_i915_private *dev_priv = dev->dev_private;
7168 int pipe = crtc->pipe;
7170 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7171 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
7172 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
7173 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
7176 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
7177 struct intel_link_m_n *m_n,
7178 struct intel_link_m_n *m2_n2)
7180 struct drm_device *dev = crtc->base.dev;
7181 struct drm_i915_private *dev_priv = dev->dev_private;
7182 int pipe = crtc->pipe;
7183 enum transcoder transcoder = crtc->config->cpu_transcoder;
7185 if (INTEL_INFO(dev)->gen >= 5) {
7186 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
7187 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
7188 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
7189 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
7190 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
7191 * for gen < 8) and if DRRS is supported (to make sure the
7192 * registers are not unnecessarily accessed).
7194 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
7195 crtc->config->has_drrs) {
7196 I915_WRITE(PIPE_DATA_M2(transcoder),
7197 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
7198 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
7199 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
7200 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
7203 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7204 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
7205 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
7206 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
7210 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
7212 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
7215 dp_m_n = &crtc->config->dp_m_n;
7216 dp_m2_n2 = &crtc->config->dp_m2_n2;
7217 } else if (m_n == M2_N2) {
7220 * M2_N2 registers are not supported. Hence m2_n2 divider value
7221 * needs to be programmed into M1_N1.
7223 dp_m_n = &crtc->config->dp_m2_n2;
7225 DRM_ERROR("Unsupported divider value\n");
7229 if (crtc->config->has_pch_encoder)
7230 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
7232 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
7235 static void vlv_compute_dpll(struct intel_crtc *crtc,
7236 struct intel_crtc_state *pipe_config)
7241 * Enable DPIO clock input. We should never disable the reference
7242 * clock for pipe B, since VGA hotplug / manual detection depends
7245 dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REF_CLK_ENABLE_VLV |
7246 DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_REF_CLK_VLV;
7247 /* We should never disable this, set it here for state tracking */
7248 if (crtc->pipe == PIPE_B)
7249 dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7250 dpll |= DPLL_VCO_ENABLE;
7251 pipe_config->dpll_hw_state.dpll = dpll;
7253 dpll_md = (pipe_config->pixel_multiplier - 1)
7254 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7255 pipe_config->dpll_hw_state.dpll_md = dpll_md;
7258 static void vlv_prepare_pll(struct intel_crtc *crtc,
7259 const struct intel_crtc_state *pipe_config)
7261 struct drm_device *dev = crtc->base.dev;
7262 struct drm_i915_private *dev_priv = dev->dev_private;
7263 int pipe = crtc->pipe;
7265 u32 bestn, bestm1, bestm2, bestp1, bestp2;
7266 u32 coreclk, reg_val;
7268 mutex_lock(&dev_priv->sb_lock);
7270 bestn = pipe_config->dpll.n;
7271 bestm1 = pipe_config->dpll.m1;
7272 bestm2 = pipe_config->dpll.m2;
7273 bestp1 = pipe_config->dpll.p1;
7274 bestp2 = pipe_config->dpll.p2;
7276 /* See eDP HDMI DPIO driver vbios notes doc */
7278 /* PLL B needs special handling */
7280 vlv_pllb_recal_opamp(dev_priv, pipe);
7282 /* Set up Tx target for periodic Rcomp update */
7283 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
7285 /* Disable target IRef on PLL */
7286 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
7287 reg_val &= 0x00ffffff;
7288 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
7290 /* Disable fast lock */
7291 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
7293 /* Set idtafcrecal before PLL is enabled */
7294 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
7295 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
7296 mdiv |= ((bestn << DPIO_N_SHIFT));
7297 mdiv |= (1 << DPIO_K_SHIFT);
7300 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
7301 * but we don't support that).
7302 * Note: don't use the DAC post divider as it seems unstable.
7304 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
7305 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7307 mdiv |= DPIO_ENABLE_CALIBRATION;
7308 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7310 /* Set HBR and RBR LPF coefficients */
7311 if (pipe_config->port_clock == 162000 ||
7312 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
7313 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
7314 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7317 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7320 if (pipe_config->has_dp_encoder) {
7321 /* Use SSC source */
7323 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7326 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7328 } else { /* HDMI or VGA */
7329 /* Use bend source */
7331 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7334 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7338 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
7339 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
7340 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
7341 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
7342 coreclk |= 0x01000000;
7343 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
7345 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
7346 mutex_unlock(&dev_priv->sb_lock);
7349 static void chv_compute_dpll(struct intel_crtc *crtc,
7350 struct intel_crtc_state *pipe_config)
7352 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
7353 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
7355 if (crtc->pipe != PIPE_A)
7356 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7358 pipe_config->dpll_hw_state.dpll_md =
7359 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7362 static void chv_prepare_pll(struct intel_crtc *crtc,
7363 const struct intel_crtc_state *pipe_config)
7365 struct drm_device *dev = crtc->base.dev;
7366 struct drm_i915_private *dev_priv = dev->dev_private;
7367 int pipe = crtc->pipe;
7368 int dpll_reg = DPLL(crtc->pipe);
7369 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7370 u32 loopfilter, tribuf_calcntr;
7371 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
7375 bestn = pipe_config->dpll.n;
7376 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7377 bestm1 = pipe_config->dpll.m1;
7378 bestm2 = pipe_config->dpll.m2 >> 22;
7379 bestp1 = pipe_config->dpll.p1;
7380 bestp2 = pipe_config->dpll.p2;
7381 vco = pipe_config->dpll.vco;
7386 * Enable Refclk and SSC
7388 I915_WRITE(dpll_reg,
7389 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
7391 mutex_lock(&dev_priv->sb_lock);
7393 /* p1 and p2 divider */
7394 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7395 5 << DPIO_CHV_S1_DIV_SHIFT |
7396 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7397 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7398 1 << DPIO_CHV_K_DIV_SHIFT);
7400 /* Feedback post-divider - m2 */
7401 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7403 /* Feedback refclk divider - n and m1 */
7404 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7405 DPIO_CHV_M1_DIV_BY_2 |
7406 1 << DPIO_CHV_N_DIV_SHIFT);
7408 /* M2 fraction division */
7409 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
7411 /* M2 fraction division enable */
7412 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7413 dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7414 dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7416 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7417 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
7419 /* Program digital lock detect threshold */
7420 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7421 dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7422 DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7423 dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7425 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7426 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7429 if (vco == 5400000) {
7430 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7431 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7432 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7433 tribuf_calcntr = 0x9;
7434 } else if (vco <= 6200000) {
7435 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7436 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7437 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7438 tribuf_calcntr = 0x9;
7439 } else if (vco <= 6480000) {
7440 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7441 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7442 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7443 tribuf_calcntr = 0x8;
7445 /* Not supported. Apply the same limits as in the max case */
7446 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7447 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7448 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7451 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7453 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
7454 dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7455 dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7456 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7459 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7460 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7463 mutex_unlock(&dev_priv->sb_lock);
7467 * vlv_force_pll_on - forcibly enable just the PLL
7468 * @dev_priv: i915 private structure
7469 * @pipe: pipe PLL to enable
7470 * @dpll: PLL configuration
7472 * Enable the PLL for @pipe using the supplied @dpll config. To be used
7473 * in cases where we need the PLL enabled even when @pipe is not going to
7476 void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
7477 const struct dpll *dpll)
7479 struct intel_crtc *crtc =
7480 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
7481 struct intel_crtc_state pipe_config = {
7482 .base.crtc = &crtc->base,
7483 .pixel_multiplier = 1,
7487 if (IS_CHERRYVIEW(dev)) {
7488 chv_compute_dpll(crtc, &pipe_config);
7489 chv_prepare_pll(crtc, &pipe_config);
7490 chv_enable_pll(crtc, &pipe_config);
7492 vlv_compute_dpll(crtc, &pipe_config);
7493 vlv_prepare_pll(crtc, &pipe_config);
7494 vlv_enable_pll(crtc, &pipe_config);
7499 * vlv_force_pll_off - forcibly disable just the PLL
7500 * @dev_priv: i915 private structure
7501 * @pipe: pipe PLL to disable
7503 * Disable the PLL for @pipe. To be used in cases where we need
7504 * the PLL enabled even when @pipe is not going to be enabled.
7506 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
7508 if (IS_CHERRYVIEW(dev))
7509 chv_disable_pll(to_i915(dev), pipe);
7511 vlv_disable_pll(to_i915(dev), pipe);
7514 static void i9xx_compute_dpll(struct intel_crtc *crtc,
7515 struct intel_crtc_state *crtc_state,
7516 intel_clock_t *reduced_clock,
7519 struct drm_device *dev = crtc->base.dev;
7520 struct drm_i915_private *dev_priv = dev->dev_private;
7523 struct dpll *clock = &crtc_state->dpll;
7525 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7527 is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7528 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
7530 dpll = DPLL_VGA_MODE_DIS;
7532 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
7533 dpll |= DPLLB_MODE_LVDS;
7535 dpll |= DPLLB_MODE_DAC_SERIAL;
7537 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
7538 dpll |= (crtc_state->pixel_multiplier - 1)
7539 << SDVO_MULTIPLIER_SHIFT_HIRES;
7543 dpll |= DPLL_SDVO_HIGH_SPEED;
7545 if (crtc_state->has_dp_encoder)
7546 dpll |= DPLL_SDVO_HIGH_SPEED;
7548 /* compute bitmask from p1 value */
7549 if (IS_PINEVIEW(dev))
7550 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7552 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7553 if (IS_G4X(dev) && reduced_clock)
7554 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7556 switch (clock->p2) {
7558 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7561 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7564 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7567 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7570 if (INTEL_INFO(dev)->gen >= 4)
7571 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7573 if (crtc_state->sdvo_tv_clock)
7574 dpll |= PLL_REF_INPUT_TVCLKINBC;
7575 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7576 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7577 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7579 dpll |= PLL_REF_INPUT_DREFCLK;
7581 dpll |= DPLL_VCO_ENABLE;
7582 crtc_state->dpll_hw_state.dpll = dpll;
7584 if (INTEL_INFO(dev)->gen >= 4) {
7585 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
7586 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7587 crtc_state->dpll_hw_state.dpll_md = dpll_md;
7591 static void i8xx_compute_dpll(struct intel_crtc *crtc,
7592 struct intel_crtc_state *crtc_state,
7593 intel_clock_t *reduced_clock,
7596 struct drm_device *dev = crtc->base.dev;
7597 struct drm_i915_private *dev_priv = dev->dev_private;
7599 struct dpll *clock = &crtc_state->dpll;
7601 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7603 dpll = DPLL_VGA_MODE_DIS;
7605 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7606 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7609 dpll |= PLL_P1_DIVIDE_BY_TWO;
7611 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7613 dpll |= PLL_P2_DIVIDE_BY_4;
7616 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
7617 dpll |= DPLL_DVO_2X_MODE;
7619 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7620 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7621 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7623 dpll |= PLL_REF_INPUT_DREFCLK;
7625 dpll |= DPLL_VCO_ENABLE;
7626 crtc_state->dpll_hw_state.dpll = dpll;
7629 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
7631 struct drm_device *dev = intel_crtc->base.dev;
7632 struct drm_i915_private *dev_priv = dev->dev_private;
7633 enum pipe pipe = intel_crtc->pipe;
7634 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
7635 const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
7636 uint32_t crtc_vtotal, crtc_vblank_end;
7639 /* We need to be careful not to changed the adjusted mode, for otherwise
7640 * the hw state checker will get angry at the mismatch. */
7641 crtc_vtotal = adjusted_mode->crtc_vtotal;
7642 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
7644 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
7645 /* the chip adds 2 halflines automatically */
7647 crtc_vblank_end -= 1;
7649 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7650 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7652 vsyncshift = adjusted_mode->crtc_hsync_start -
7653 adjusted_mode->crtc_htotal / 2;
7655 vsyncshift += adjusted_mode->crtc_htotal;
7658 if (INTEL_INFO(dev)->gen > 3)
7659 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
7661 I915_WRITE(HTOTAL(cpu_transcoder),
7662 (adjusted_mode->crtc_hdisplay - 1) |
7663 ((adjusted_mode->crtc_htotal - 1) << 16));
7664 I915_WRITE(HBLANK(cpu_transcoder),
7665 (adjusted_mode->crtc_hblank_start - 1) |
7666 ((adjusted_mode->crtc_hblank_end - 1) << 16));
7667 I915_WRITE(HSYNC(cpu_transcoder),
7668 (adjusted_mode->crtc_hsync_start - 1) |
7669 ((adjusted_mode->crtc_hsync_end - 1) << 16));
7671 I915_WRITE(VTOTAL(cpu_transcoder),
7672 (adjusted_mode->crtc_vdisplay - 1) |
7673 ((crtc_vtotal - 1) << 16));
7674 I915_WRITE(VBLANK(cpu_transcoder),
7675 (adjusted_mode->crtc_vblank_start - 1) |
7676 ((crtc_vblank_end - 1) << 16));
7677 I915_WRITE(VSYNC(cpu_transcoder),
7678 (adjusted_mode->crtc_vsync_start - 1) |
7679 ((adjusted_mode->crtc_vsync_end - 1) << 16));
7681 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7682 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7683 * documented on the DDI_FUNC_CTL register description, EDP Input Select
7685 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
7686 (pipe == PIPE_B || pipe == PIPE_C))
7687 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7689 /* pipesrc controls the size that is scaled from, which should
7690 * always be the user's requested size.
7692 I915_WRITE(PIPESRC(pipe),
7693 ((intel_crtc->config->pipe_src_w - 1) << 16) |
7694 (intel_crtc->config->pipe_src_h - 1));
7697 static void intel_get_pipe_timings(struct intel_crtc *crtc,
7698 struct intel_crtc_state *pipe_config)
7700 struct drm_device *dev = crtc->base.dev;
7701 struct drm_i915_private *dev_priv = dev->dev_private;
7702 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7705 tmp = I915_READ(HTOTAL(cpu_transcoder));
7706 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7707 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
7708 tmp = I915_READ(HBLANK(cpu_transcoder));
7709 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
7710 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
7711 tmp = I915_READ(HSYNC(cpu_transcoder));
7712 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7713 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
7715 tmp = I915_READ(VTOTAL(cpu_transcoder));
7716 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7717 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
7718 tmp = I915_READ(VBLANK(cpu_transcoder));
7719 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
7720 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
7721 tmp = I915_READ(VSYNC(cpu_transcoder));
7722 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7723 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
7725 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
7726 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7727 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7728 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
7731 tmp = I915_READ(PIPESRC(crtc->pipe));
7732 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7733 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7735 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7736 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
7739 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
7740 struct intel_crtc_state *pipe_config)
7742 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7743 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7744 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7745 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
7747 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7748 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7749 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7750 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
7752 mode->flags = pipe_config->base.adjusted_mode.flags;
7753 mode->type = DRM_MODE_TYPE_DRIVER;
7755 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7756 mode->flags |= pipe_config->base.adjusted_mode.flags;
7758 mode->hsync = drm_mode_hsync(mode);
7759 mode->vrefresh = drm_mode_vrefresh(mode);
7760 drm_mode_set_name(mode);
7763 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
7765 struct drm_device *dev = intel_crtc->base.dev;
7766 struct drm_i915_private *dev_priv = dev->dev_private;
7771 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
7772 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
7773 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
7775 if (intel_crtc->config->double_wide)
7776 pipeconf |= PIPECONF_DOUBLE_WIDE;
7778 /* only g4x and later have fancy bpc/dither controls */
7779 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
7780 /* Bspec claims that we can't use dithering for 30bpp pipes. */
7781 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
7782 pipeconf |= PIPECONF_DITHER_EN |
7783 PIPECONF_DITHER_TYPE_SP;
7785 switch (intel_crtc->config->pipe_bpp) {
7787 pipeconf |= PIPECONF_6BPC;
7790 pipeconf |= PIPECONF_8BPC;
7793 pipeconf |= PIPECONF_10BPC;
7796 /* Case prevented by intel_choose_pipe_bpp_dither. */
7801 if (HAS_PIPE_CXSR(dev)) {
7802 if (intel_crtc->lowfreq_avail) {
7803 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
7804 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
7806 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
7810 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
7811 if (INTEL_INFO(dev)->gen < 4 ||
7812 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7813 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7815 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7817 pipeconf |= PIPECONF_PROGRESSIVE;
7819 if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
7820 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
7822 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
7823 POSTING_READ(PIPECONF(intel_crtc->pipe));
7826 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
7827 struct intel_crtc_state *crtc_state)
7829 struct drm_device *dev = crtc->base.dev;
7830 struct drm_i915_private *dev_priv = dev->dev_private;
7831 int refclk, num_connectors = 0;
7832 intel_clock_t clock;
7834 bool is_dsi = false;
7835 struct intel_encoder *encoder;
7836 const intel_limit_t *limit;
7837 struct drm_atomic_state *state = crtc_state->base.state;
7838 struct drm_connector *connector;
7839 struct drm_connector_state *connector_state;
7842 memset(&crtc_state->dpll_hw_state, 0,
7843 sizeof(crtc_state->dpll_hw_state));
7845 for_each_connector_in_state(state, connector, connector_state, i) {
7846 if (connector_state->crtc != &crtc->base)
7849 encoder = to_intel_encoder(connector_state->best_encoder);
7851 switch (encoder->type) {
7852 case INTEL_OUTPUT_DSI:
7865 if (!crtc_state->clock_set) {
7866 refclk = i9xx_get_refclk(crtc_state, num_connectors);
7869 * Returns a set of divisors for the desired target clock with
7870 * the given refclk, or FALSE. The returned values represent
7871 * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
7874 limit = intel_limit(crtc_state, refclk);
7875 ok = dev_priv->display.find_dpll(limit, crtc_state,
7876 crtc_state->port_clock,
7877 refclk, NULL, &clock);
7879 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7883 /* Compat-code for transition, will disappear. */
7884 crtc_state->dpll.n = clock.n;
7885 crtc_state->dpll.m1 = clock.m1;
7886 crtc_state->dpll.m2 = clock.m2;
7887 crtc_state->dpll.p1 = clock.p1;
7888 crtc_state->dpll.p2 = clock.p2;
7892 i8xx_compute_dpll(crtc, crtc_state, NULL,
7894 } else if (IS_CHERRYVIEW(dev)) {
7895 chv_compute_dpll(crtc, crtc_state);
7896 } else if (IS_VALLEYVIEW(dev)) {
7897 vlv_compute_dpll(crtc, crtc_state);
7899 i9xx_compute_dpll(crtc, crtc_state, NULL,
7906 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
7907 struct intel_crtc_state *pipe_config)
7909 struct drm_device *dev = crtc->base.dev;
7910 struct drm_i915_private *dev_priv = dev->dev_private;
7913 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
7916 tmp = I915_READ(PFIT_CONTROL);
7917 if (!(tmp & PFIT_ENABLE))
7920 /* Check whether the pfit is attached to our pipe. */
7921 if (INTEL_INFO(dev)->gen < 4) {
7922 if (crtc->pipe != PIPE_B)
7925 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
7929 pipe_config->gmch_pfit.control = tmp;
7930 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
7931 if (INTEL_INFO(dev)->gen < 5)
7932 pipe_config->gmch_pfit.lvds_border_bits =
7933 I915_READ(LVDS) & LVDS_BORDER_ENABLE;
7936 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
7937 struct intel_crtc_state *pipe_config)
7939 struct drm_device *dev = crtc->base.dev;
7940 struct drm_i915_private *dev_priv = dev->dev_private;
7941 int pipe = pipe_config->cpu_transcoder;
7942 intel_clock_t clock;
7944 int refclk = 100000;
7946 /* In case of MIPI DPLL will not even be used */
7947 if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
7950 mutex_lock(&dev_priv->sb_lock);
7951 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
7952 mutex_unlock(&dev_priv->sb_lock);
7954 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
7955 clock.m2 = mdiv & DPIO_M2DIV_MASK;
7956 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
7957 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
7958 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
7960 pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
7964 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
7965 struct intel_initial_plane_config *plane_config)
7967 struct drm_device *dev = crtc->base.dev;
7968 struct drm_i915_private *dev_priv = dev->dev_private;
7969 u32 val, base, offset;
7970 int pipe = crtc->pipe, plane = crtc->plane;
7971 int fourcc, pixel_format;
7972 unsigned int aligned_height;
7973 struct drm_framebuffer *fb;
7974 struct intel_framebuffer *intel_fb;
7976 val = I915_READ(DSPCNTR(plane));
7977 if (!(val & DISPLAY_PLANE_ENABLE))
7980 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
7982 DRM_DEBUG_KMS("failed to alloc fb\n");
7986 fb = &intel_fb->base;
7988 if (INTEL_INFO(dev)->gen >= 4) {
7989 if (val & DISPPLANE_TILED) {
7990 plane_config->tiling = I915_TILING_X;
7991 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7995 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
7996 fourcc = i9xx_format_to_fourcc(pixel_format);
7997 fb->pixel_format = fourcc;
7998 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
8000 if (INTEL_INFO(dev)->gen >= 4) {
8001 if (plane_config->tiling)
8002 offset = I915_READ(DSPTILEOFF(plane));
8004 offset = I915_READ(DSPLINOFF(plane));
8005 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
8007 base = I915_READ(DSPADDR(plane));
8009 plane_config->base = base;
8011 val = I915_READ(PIPESRC(pipe));
8012 fb->width = ((val >> 16) & 0xfff) + 1;
8013 fb->height = ((val >> 0) & 0xfff) + 1;
8015 val = I915_READ(DSPSTRIDE(pipe));
8016 fb->pitches[0] = val & 0xffffffc0;
8018 aligned_height = intel_fb_align_height(dev, fb->height,
8022 plane_config->size = fb->pitches[0] * aligned_height;
8024 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
8025 pipe_name(pipe), plane, fb->width, fb->height,
8026 fb->bits_per_pixel, base, fb->pitches[0],
8027 plane_config->size);
8029 plane_config->fb = intel_fb;
8032 static void chv_crtc_clock_get(struct intel_crtc *crtc,
8033 struct intel_crtc_state *pipe_config)
8035 struct drm_device *dev = crtc->base.dev;
8036 struct drm_i915_private *dev_priv = dev->dev_private;
8037 int pipe = pipe_config->cpu_transcoder;
8038 enum dpio_channel port = vlv_pipe_to_channel(pipe);
8039 intel_clock_t clock;
8040 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
8041 int refclk = 100000;
8043 mutex_lock(&dev_priv->sb_lock);
8044 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
8045 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
8046 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
8047 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
8048 pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
8049 mutex_unlock(&dev_priv->sb_lock);
8051 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
8052 clock.m2 = (pll_dw0 & 0xff) << 22;
8053 if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
8054 clock.m2 |= pll_dw2 & 0x3fffff;
8055 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
8056 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
8057 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
8059 pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
8062 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
8063 struct intel_crtc_state *pipe_config)
8065 struct drm_device *dev = crtc->base.dev;
8066 struct drm_i915_private *dev_priv = dev->dev_private;
8069 if (!intel_display_power_is_enabled(dev_priv,
8070 POWER_DOMAIN_PIPE(crtc->pipe)))
8073 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8074 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
8076 tmp = I915_READ(PIPECONF(crtc->pipe));
8077 if (!(tmp & PIPECONF_ENABLE))
8080 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
8081 switch (tmp & PIPECONF_BPC_MASK) {
8083 pipe_config->pipe_bpp = 18;
8086 pipe_config->pipe_bpp = 24;
8088 case PIPECONF_10BPC:
8089 pipe_config->pipe_bpp = 30;
8096 if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
8097 pipe_config->limited_color_range = true;
8099 if (INTEL_INFO(dev)->gen < 4)
8100 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
8102 intel_get_pipe_timings(crtc, pipe_config);
8104 i9xx_get_pfit_config(crtc, pipe_config);
8106 if (INTEL_INFO(dev)->gen >= 4) {
8107 tmp = I915_READ(DPLL_MD(crtc->pipe));
8108 pipe_config->pixel_multiplier =
8109 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
8110 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8111 pipe_config->dpll_hw_state.dpll_md = tmp;
8112 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
8113 tmp = I915_READ(DPLL(crtc->pipe));
8114 pipe_config->pixel_multiplier =
8115 ((tmp & SDVO_MULTIPLIER_MASK)
8116 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
8118 /* Note that on i915G/GM the pixel multiplier is in the sdvo
8119 * port and will be fixed up in the encoder->get_config
8121 pipe_config->pixel_multiplier = 1;
8123 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
8124 if (!IS_VALLEYVIEW(dev)) {
8126 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
8127 * on 830. Filter it out here so that we don't
8128 * report errors due to that.
8131 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
8133 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
8134 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
8136 /* Mask out read-only status bits. */
8137 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
8138 DPLL_PORTC_READY_MASK |
8139 DPLL_PORTB_READY_MASK);
8142 if (IS_CHERRYVIEW(dev))
8143 chv_crtc_clock_get(crtc, pipe_config);
8144 else if (IS_VALLEYVIEW(dev))
8145 vlv_crtc_clock_get(crtc, pipe_config);
8147 i9xx_crtc_clock_get(crtc, pipe_config);
8150 * Normally the dotclock is filled in by the encoder .get_config()
8151 * but in case the pipe is enabled w/o any ports we need a sane
8154 pipe_config->base.adjusted_mode.crtc_clock =
8155 pipe_config->port_clock / pipe_config->pixel_multiplier;
8160 static void ironlake_init_pch_refclk(struct drm_device *dev)
8162 struct drm_i915_private *dev_priv = dev->dev_private;
8163 struct intel_encoder *encoder;
8165 bool has_lvds = false;
8166 bool has_cpu_edp = false;
8167 bool has_panel = false;
8168 bool has_ck505 = false;
8169 bool can_ssc = false;
8171 /* We need to take the global config into account */
8172 for_each_intel_encoder(dev, encoder) {
8173 switch (encoder->type) {
8174 case INTEL_OUTPUT_LVDS:
8178 case INTEL_OUTPUT_EDP:
8180 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
8188 if (HAS_PCH_IBX(dev)) {
8189 has_ck505 = dev_priv->vbt.display_clock_mode;
8190 can_ssc = has_ck505;
8196 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
8197 has_panel, has_lvds, has_ck505);
8199 /* Ironlake: try to setup display ref clock before DPLL
8200 * enabling. This is only under driver's control after
8201 * PCH B stepping, previous chipset stepping should be
8202 * ignoring this setting.
8204 val = I915_READ(PCH_DREF_CONTROL);
8206 /* As we must carefully and slowly disable/enable each source in turn,
8207 * compute the final state we want first and check if we need to
8208 * make any changes at all.
8211 final &= ~DREF_NONSPREAD_SOURCE_MASK;
8213 final |= DREF_NONSPREAD_CK505_ENABLE;
8215 final |= DREF_NONSPREAD_SOURCE_ENABLE;
8217 final &= ~DREF_SSC_SOURCE_MASK;
8218 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8219 final &= ~DREF_SSC1_ENABLE;
8222 final |= DREF_SSC_SOURCE_ENABLE;
8224 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8225 final |= DREF_SSC1_ENABLE;
8228 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8229 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8231 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8233 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8235 final |= DREF_SSC_SOURCE_DISABLE;
8236 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8242 /* Always enable nonspread source */
8243 val &= ~DREF_NONSPREAD_SOURCE_MASK;
8246 val |= DREF_NONSPREAD_CK505_ENABLE;
8248 val |= DREF_NONSPREAD_SOURCE_ENABLE;
8251 val &= ~DREF_SSC_SOURCE_MASK;
8252 val |= DREF_SSC_SOURCE_ENABLE;
8254 /* SSC must be turned on before enabling the CPU output */
8255 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8256 DRM_DEBUG_KMS("Using SSC on panel\n");
8257 val |= DREF_SSC1_ENABLE;
8259 val &= ~DREF_SSC1_ENABLE;
8261 /* Get SSC going before enabling the outputs */
8262 I915_WRITE(PCH_DREF_CONTROL, val);
8263 POSTING_READ(PCH_DREF_CONTROL);
8266 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8268 /* Enable CPU source on CPU attached eDP */
8270 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8271 DRM_DEBUG_KMS("Using SSC on eDP\n");
8272 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8274 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8276 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8278 I915_WRITE(PCH_DREF_CONTROL, val);
8279 POSTING_READ(PCH_DREF_CONTROL);
8282 DRM_DEBUG_KMS("Disabling SSC entirely\n");
8284 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8286 /* Turn off CPU output */
8287 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8289 I915_WRITE(PCH_DREF_CONTROL, val);
8290 POSTING_READ(PCH_DREF_CONTROL);
8293 /* Turn off the SSC source */
8294 val &= ~DREF_SSC_SOURCE_MASK;
8295 val |= DREF_SSC_SOURCE_DISABLE;
8298 val &= ~DREF_SSC1_ENABLE;
8300 I915_WRITE(PCH_DREF_CONTROL, val);
8301 POSTING_READ(PCH_DREF_CONTROL);
8305 BUG_ON(val != final);
8308 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
8312 tmp = I915_READ(SOUTH_CHICKEN2);
8313 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
8314 I915_WRITE(SOUTH_CHICKEN2, tmp);
8316 if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
8317 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
8318 DRM_ERROR("FDI mPHY reset assert timeout\n");
8320 tmp = I915_READ(SOUTH_CHICKEN2);
8321 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
8322 I915_WRITE(SOUTH_CHICKEN2, tmp);
8324 if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
8325 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
8326 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
8329 /* WaMPhyProgramming:hsw */
8330 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
8334 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
8335 tmp &= ~(0xFF << 24);
8336 tmp |= (0x12 << 24);
8337 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
8339 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
8341 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
8343 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
8345 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
8347 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
8348 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8349 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
8351 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
8352 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8353 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
8355 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8358 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
8360 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8363 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
8365 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8368 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8370 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8373 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8375 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8376 tmp &= ~(0xFF << 16);
8377 tmp |= (0x1C << 16);
8378 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8380 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8381 tmp &= ~(0xFF << 16);
8382 tmp |= (0x1C << 16);
8383 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8385 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8387 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
8389 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8391 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
8393 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8394 tmp &= ~(0xF << 28);
8396 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
8398 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8399 tmp &= ~(0xF << 28);
8401 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
8404 /* Implements 3 different sequences from BSpec chapter "Display iCLK
8405 * Programming" based on the parameters passed:
8406 * - Sequence to enable CLKOUT_DP
8407 * - Sequence to enable CLKOUT_DP without spread
8408 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8410 static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
8413 struct drm_i915_private *dev_priv = dev->dev_private;
8416 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8418 if (WARN(HAS_PCH_LPT_LP(dev) && with_fdi, "LP PCH doesn't have FDI\n"))
8421 mutex_lock(&dev_priv->sb_lock);
8423 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8424 tmp &= ~SBI_SSCCTL_DISABLE;
8425 tmp |= SBI_SSCCTL_PATHALT;
8426 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8431 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8432 tmp &= ~SBI_SSCCTL_PATHALT;
8433 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8436 lpt_reset_fdi_mphy(dev_priv);
8437 lpt_program_fdi_mphy(dev_priv);
8441 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8442 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8443 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8444 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8446 mutex_unlock(&dev_priv->sb_lock);
8449 /* Sequence to disable CLKOUT_DP */
8450 static void lpt_disable_clkout_dp(struct drm_device *dev)
8452 struct drm_i915_private *dev_priv = dev->dev_private;
8455 mutex_lock(&dev_priv->sb_lock);
8457 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8458 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8459 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8460 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8462 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8463 if (!(tmp & SBI_SSCCTL_DISABLE)) {
8464 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8465 tmp |= SBI_SSCCTL_PATHALT;
8466 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8469 tmp |= SBI_SSCCTL_DISABLE;
8470 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8473 mutex_unlock(&dev_priv->sb_lock);
8476 static void lpt_init_pch_refclk(struct drm_device *dev)
8478 struct intel_encoder *encoder;
8479 bool has_vga = false;
8481 for_each_intel_encoder(dev, encoder) {
8482 switch (encoder->type) {
8483 case INTEL_OUTPUT_ANALOG:
8492 lpt_enable_clkout_dp(dev, true, true);
8494 lpt_disable_clkout_dp(dev);
8498 * Initialize reference clocks when the driver loads
8500 void intel_init_pch_refclk(struct drm_device *dev)
8502 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
8503 ironlake_init_pch_refclk(dev);
8504 else if (HAS_PCH_LPT(dev))
8505 lpt_init_pch_refclk(dev);
8508 static int ironlake_get_refclk(struct intel_crtc_state *crtc_state)
8510 struct drm_device *dev = crtc_state->base.crtc->dev;
8511 struct drm_i915_private *dev_priv = dev->dev_private;
8512 struct drm_atomic_state *state = crtc_state->base.state;
8513 struct drm_connector *connector;
8514 struct drm_connector_state *connector_state;
8515 struct intel_encoder *encoder;
8516 int num_connectors = 0, i;
8517 bool is_lvds = false;
8519 for_each_connector_in_state(state, connector, connector_state, i) {
8520 if (connector_state->crtc != crtc_state->base.crtc)
8523 encoder = to_intel_encoder(connector_state->best_encoder);
8525 switch (encoder->type) {
8526 case INTEL_OUTPUT_LVDS:
8535 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
8536 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
8537 dev_priv->vbt.lvds_ssc_freq);
8538 return dev_priv->vbt.lvds_ssc_freq;
8544 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
8546 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8547 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8548 int pipe = intel_crtc->pipe;
8553 switch (intel_crtc->config->pipe_bpp) {
8555 val |= PIPECONF_6BPC;
8558 val |= PIPECONF_8BPC;
8561 val |= PIPECONF_10BPC;
8564 val |= PIPECONF_12BPC;
8567 /* Case prevented by intel_choose_pipe_bpp_dither. */
8571 if (intel_crtc->config->dither)
8572 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8574 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8575 val |= PIPECONF_INTERLACED_ILK;
8577 val |= PIPECONF_PROGRESSIVE;
8579 if (intel_crtc->config->limited_color_range)
8580 val |= PIPECONF_COLOR_RANGE_SELECT;
8582 I915_WRITE(PIPECONF(pipe), val);
8583 POSTING_READ(PIPECONF(pipe));
8587 * Set up the pipe CSC unit.
8589 * Currently only full range RGB to limited range RGB conversion
8590 * is supported, but eventually this should handle various
8591 * RGB<->YCbCr scenarios as well.
8593 static void intel_set_pipe_csc(struct drm_crtc *crtc)
8595 struct drm_device *dev = crtc->dev;
8596 struct drm_i915_private *dev_priv = dev->dev_private;
8597 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8598 int pipe = intel_crtc->pipe;
8599 uint16_t coeff = 0x7800; /* 1.0 */
8602 * TODO: Check what kind of values actually come out of the pipe
8603 * with these coeff/postoff values and adjust to get the best
8604 * accuracy. Perhaps we even need to take the bpc value into
8608 if (intel_crtc->config->limited_color_range)
8609 coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
8612 * GY/GU and RY/RU should be the other way around according
8613 * to BSpec, but reality doesn't agree. Just set them up in
8614 * a way that results in the correct picture.
8616 I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
8617 I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
8619 I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
8620 I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
8622 I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
8623 I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
8625 I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
8626 I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
8627 I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
8629 if (INTEL_INFO(dev)->gen > 6) {
8630 uint16_t postoff = 0;
8632 if (intel_crtc->config->limited_color_range)
8633 postoff = (16 * (1 << 12) / 255) & 0x1fff;
8635 I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
8636 I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
8637 I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
8639 I915_WRITE(PIPE_CSC_MODE(pipe), 0);
8641 uint32_t mode = CSC_MODE_YUV_TO_RGB;
8643 if (intel_crtc->config->limited_color_range)
8644 mode |= CSC_BLACK_SCREEN_OFFSET;
8646 I915_WRITE(PIPE_CSC_MODE(pipe), mode);
8650 static void haswell_set_pipeconf(struct drm_crtc *crtc)
8652 struct drm_device *dev = crtc->dev;
8653 struct drm_i915_private *dev_priv = dev->dev_private;
8654 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8655 enum pipe pipe = intel_crtc->pipe;
8656 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
8661 if (IS_HASWELL(dev) && intel_crtc->config->dither)
8662 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8664 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8665 val |= PIPECONF_INTERLACED_ILK;
8667 val |= PIPECONF_PROGRESSIVE;
8669 I915_WRITE(PIPECONF(cpu_transcoder), val);
8670 POSTING_READ(PIPECONF(cpu_transcoder));
8672 I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
8673 POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
8675 if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
8678 switch (intel_crtc->config->pipe_bpp) {
8680 val |= PIPEMISC_DITHER_6_BPC;
8683 val |= PIPEMISC_DITHER_8_BPC;
8686 val |= PIPEMISC_DITHER_10_BPC;
8689 val |= PIPEMISC_DITHER_12_BPC;
8692 /* Case prevented by pipe_config_set_bpp. */
8696 if (intel_crtc->config->dither)
8697 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8699 I915_WRITE(PIPEMISC(pipe), val);
8703 static bool ironlake_compute_clocks(struct drm_crtc *crtc,
8704 struct intel_crtc_state *crtc_state,
8705 intel_clock_t *clock,
8706 bool *has_reduced_clock,
8707 intel_clock_t *reduced_clock)
8709 struct drm_device *dev = crtc->dev;
8710 struct drm_i915_private *dev_priv = dev->dev_private;
8712 const intel_limit_t *limit;
8715 refclk = ironlake_get_refclk(crtc_state);
8718 * Returns a set of divisors for the desired target clock with the given
8719 * refclk, or FALSE. The returned values represent the clock equation:
8720 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
8722 limit = intel_limit(crtc_state, refclk);
8723 ret = dev_priv->display.find_dpll(limit, crtc_state,
8724 crtc_state->port_clock,
8725 refclk, NULL, clock);
8732 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8735 * Account for spread spectrum to avoid
8736 * oversubscribing the link. Max center spread
8737 * is 2.5%; use 5% for safety's sake.
8739 u32 bps = target_clock * bpp * 21 / 20;
8740 return DIV_ROUND_UP(bps, link_bw * 8);
8743 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
8745 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
8748 static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
8749 struct intel_crtc_state *crtc_state,
8751 intel_clock_t *reduced_clock, u32 *fp2)
8753 struct drm_crtc *crtc = &intel_crtc->base;
8754 struct drm_device *dev = crtc->dev;
8755 struct drm_i915_private *dev_priv = dev->dev_private;
8756 struct drm_atomic_state *state = crtc_state->base.state;
8757 struct drm_connector *connector;
8758 struct drm_connector_state *connector_state;
8759 struct intel_encoder *encoder;
8761 int factor, num_connectors = 0, i;
8762 bool is_lvds = false, is_sdvo = false;
8764 for_each_connector_in_state(state, connector, connector_state, i) {
8765 if (connector_state->crtc != crtc_state->base.crtc)
8768 encoder = to_intel_encoder(connector_state->best_encoder);
8770 switch (encoder->type) {
8771 case INTEL_OUTPUT_LVDS:
8774 case INTEL_OUTPUT_SDVO:
8775 case INTEL_OUTPUT_HDMI:
8785 /* Enable autotuning of the PLL clock (if permissible) */
8788 if ((intel_panel_use_ssc(dev_priv) &&
8789 dev_priv->vbt.lvds_ssc_freq == 100000) ||
8790 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
8792 } else if (crtc_state->sdvo_tv_clock)
8795 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
8798 if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
8804 dpll |= DPLLB_MODE_LVDS;
8806 dpll |= DPLLB_MODE_DAC_SERIAL;
8808 dpll |= (crtc_state->pixel_multiplier - 1)
8809 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
8812 dpll |= DPLL_SDVO_HIGH_SPEED;
8813 if (crtc_state->has_dp_encoder)
8814 dpll |= DPLL_SDVO_HIGH_SPEED;
8816 /* compute bitmask from p1 value */
8817 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
8819 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
8821 switch (crtc_state->dpll.p2) {
8823 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
8826 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
8829 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
8832 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
8836 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
8837 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
8839 dpll |= PLL_REF_INPUT_DREFCLK;
8841 return dpll | DPLL_VCO_ENABLE;
8844 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
8845 struct intel_crtc_state *crtc_state)
8847 struct drm_device *dev = crtc->base.dev;
8848 intel_clock_t clock, reduced_clock;
8849 u32 dpll = 0, fp = 0, fp2 = 0;
8850 bool ok, has_reduced_clock = false;
8851 bool is_lvds = false;
8852 struct intel_shared_dpll *pll;
8854 memset(&crtc_state->dpll_hw_state, 0,
8855 sizeof(crtc_state->dpll_hw_state));
8857 is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
8859 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
8860 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
8862 ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
8863 &has_reduced_clock, &reduced_clock);
8864 if (!ok && !crtc_state->clock_set) {
8865 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8868 /* Compat-code for transition, will disappear. */
8869 if (!crtc_state->clock_set) {
8870 crtc_state->dpll.n = clock.n;
8871 crtc_state->dpll.m1 = clock.m1;
8872 crtc_state->dpll.m2 = clock.m2;
8873 crtc_state->dpll.p1 = clock.p1;
8874 crtc_state->dpll.p2 = clock.p2;
8877 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
8878 if (crtc_state->has_pch_encoder) {
8879 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
8880 if (has_reduced_clock)
8881 fp2 = i9xx_dpll_compute_fp(&reduced_clock);
8883 dpll = ironlake_compute_dpll(crtc, crtc_state,
8884 &fp, &reduced_clock,
8885 has_reduced_clock ? &fp2 : NULL);
8887 crtc_state->dpll_hw_state.dpll = dpll;
8888 crtc_state->dpll_hw_state.fp0 = fp;
8889 if (has_reduced_clock)
8890 crtc_state->dpll_hw_state.fp1 = fp2;
8892 crtc_state->dpll_hw_state.fp1 = fp;
8894 pll = intel_get_shared_dpll(crtc, crtc_state);
8896 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
8897 pipe_name(crtc->pipe));
8902 if (is_lvds && has_reduced_clock)
8903 crtc->lowfreq_avail = true;
8905 crtc->lowfreq_avail = false;
8910 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
8911 struct intel_link_m_n *m_n)
8913 struct drm_device *dev = crtc->base.dev;
8914 struct drm_i915_private *dev_priv = dev->dev_private;
8915 enum pipe pipe = crtc->pipe;
8917 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
8918 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
8919 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
8921 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
8922 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
8923 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8926 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
8927 enum transcoder transcoder,
8928 struct intel_link_m_n *m_n,
8929 struct intel_link_m_n *m2_n2)
8931 struct drm_device *dev = crtc->base.dev;
8932 struct drm_i915_private *dev_priv = dev->dev_private;
8933 enum pipe pipe = crtc->pipe;
8935 if (INTEL_INFO(dev)->gen >= 5) {
8936 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
8937 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
8938 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
8940 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
8941 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
8942 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8943 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
8944 * gen < 8) and if DRRS is supported (to make sure the
8945 * registers are not unnecessarily read).
8947 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
8948 crtc->config->has_drrs) {
8949 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
8950 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
8951 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
8953 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
8954 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
8955 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8958 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
8959 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
8960 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
8962 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
8963 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
8964 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8968 void intel_dp_get_m_n(struct intel_crtc *crtc,
8969 struct intel_crtc_state *pipe_config)
8971 if (pipe_config->has_pch_encoder)
8972 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
8974 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8975 &pipe_config->dp_m_n,
8976 &pipe_config->dp_m2_n2);
8979 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
8980 struct intel_crtc_state *pipe_config)
8982 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8983 &pipe_config->fdi_m_n, NULL);
8986 static void skylake_get_pfit_config(struct intel_crtc *crtc,
8987 struct intel_crtc_state *pipe_config)
8989 struct drm_device *dev = crtc->base.dev;
8990 struct drm_i915_private *dev_priv = dev->dev_private;
8991 struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
8992 uint32_t ps_ctrl = 0;
8996 /* find scaler attached to this pipe */
8997 for (i = 0; i < crtc->num_scalers; i++) {
8998 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
8999 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
9001 pipe_config->pch_pfit.enabled = true;
9002 pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
9003 pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
9008 scaler_state->scaler_id = id;
9010 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
9012 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
9017 skylake_get_initial_plane_config(struct intel_crtc *crtc,
9018 struct intel_initial_plane_config *plane_config)
9020 struct drm_device *dev = crtc->base.dev;
9021 struct drm_i915_private *dev_priv = dev->dev_private;
9022 u32 val, base, offset, stride_mult, tiling;
9023 int pipe = crtc->pipe;
9024 int fourcc, pixel_format;
9025 unsigned int aligned_height;
9026 struct drm_framebuffer *fb;
9027 struct intel_framebuffer *intel_fb;
9029 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9031 DRM_DEBUG_KMS("failed to alloc fb\n");
9035 fb = &intel_fb->base;
9037 val = I915_READ(PLANE_CTL(pipe, 0));
9038 if (!(val & PLANE_CTL_ENABLE))
9041 pixel_format = val & PLANE_CTL_FORMAT_MASK;
9042 fourcc = skl_format_to_fourcc(pixel_format,
9043 val & PLANE_CTL_ORDER_RGBX,
9044 val & PLANE_CTL_ALPHA_MASK);
9045 fb->pixel_format = fourcc;
9046 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9048 tiling = val & PLANE_CTL_TILED_MASK;
9050 case PLANE_CTL_TILED_LINEAR:
9051 fb->modifier[0] = DRM_FORMAT_MOD_NONE;
9053 case PLANE_CTL_TILED_X:
9054 plane_config->tiling = I915_TILING_X;
9055 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9057 case PLANE_CTL_TILED_Y:
9058 fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
9060 case PLANE_CTL_TILED_YF:
9061 fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
9064 MISSING_CASE(tiling);
9068 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
9069 plane_config->base = base;
9071 offset = I915_READ(PLANE_OFFSET(pipe, 0));
9073 val = I915_READ(PLANE_SIZE(pipe, 0));
9074 fb->height = ((val >> 16) & 0xfff) + 1;
9075 fb->width = ((val >> 0) & 0x1fff) + 1;
9077 val = I915_READ(PLANE_STRIDE(pipe, 0));
9078 stride_mult = intel_fb_stride_alignment(dev, fb->modifier[0],
9080 fb->pitches[0] = (val & 0x3ff) * stride_mult;
9082 aligned_height = intel_fb_align_height(dev, fb->height,
9086 plane_config->size = fb->pitches[0] * aligned_height;
9088 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9089 pipe_name(pipe), fb->width, fb->height,
9090 fb->bits_per_pixel, base, fb->pitches[0],
9091 plane_config->size);
9093 plane_config->fb = intel_fb;
9100 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
9101 struct intel_crtc_state *pipe_config)
9103 struct drm_device *dev = crtc->base.dev;
9104 struct drm_i915_private *dev_priv = dev->dev_private;
9107 tmp = I915_READ(PF_CTL(crtc->pipe));
9109 if (tmp & PF_ENABLE) {
9110 pipe_config->pch_pfit.enabled = true;
9111 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
9112 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
9114 /* We currently do not free assignements of panel fitters on
9115 * ivb/hsw (since we don't use the higher upscaling modes which
9116 * differentiates them) so just WARN about this case for now. */
9118 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
9119 PF_PIPE_SEL_IVB(crtc->pipe));
9125 ironlake_get_initial_plane_config(struct intel_crtc *crtc,
9126 struct intel_initial_plane_config *plane_config)
9128 struct drm_device *dev = crtc->base.dev;
9129 struct drm_i915_private *dev_priv = dev->dev_private;
9130 u32 val, base, offset;
9131 int pipe = crtc->pipe;
9132 int fourcc, pixel_format;
9133 unsigned int aligned_height;
9134 struct drm_framebuffer *fb;
9135 struct intel_framebuffer *intel_fb;
9137 val = I915_READ(DSPCNTR(pipe));
9138 if (!(val & DISPLAY_PLANE_ENABLE))
9141 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9143 DRM_DEBUG_KMS("failed to alloc fb\n");
9147 fb = &intel_fb->base;
9149 if (INTEL_INFO(dev)->gen >= 4) {
9150 if (val & DISPPLANE_TILED) {
9151 plane_config->tiling = I915_TILING_X;
9152 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9156 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
9157 fourcc = i9xx_format_to_fourcc(pixel_format);
9158 fb->pixel_format = fourcc;
9159 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9161 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
9162 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
9163 offset = I915_READ(DSPOFFSET(pipe));
9165 if (plane_config->tiling)
9166 offset = I915_READ(DSPTILEOFF(pipe));
9168 offset = I915_READ(DSPLINOFF(pipe));
9170 plane_config->base = base;
9172 val = I915_READ(PIPESRC(pipe));
9173 fb->width = ((val >> 16) & 0xfff) + 1;
9174 fb->height = ((val >> 0) & 0xfff) + 1;
9176 val = I915_READ(DSPSTRIDE(pipe));
9177 fb->pitches[0] = val & 0xffffffc0;
9179 aligned_height = intel_fb_align_height(dev, fb->height,
9183 plane_config->size = fb->pitches[0] * aligned_height;
9185 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9186 pipe_name(pipe), fb->width, fb->height,
9187 fb->bits_per_pixel, base, fb->pitches[0],
9188 plane_config->size);
9190 plane_config->fb = intel_fb;
9193 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
9194 struct intel_crtc_state *pipe_config)
9196 struct drm_device *dev = crtc->base.dev;
9197 struct drm_i915_private *dev_priv = dev->dev_private;
9200 if (!intel_display_power_is_enabled(dev_priv,
9201 POWER_DOMAIN_PIPE(crtc->pipe)))
9204 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9205 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9207 tmp = I915_READ(PIPECONF(crtc->pipe));
9208 if (!(tmp & PIPECONF_ENABLE))
9211 switch (tmp & PIPECONF_BPC_MASK) {
9213 pipe_config->pipe_bpp = 18;
9216 pipe_config->pipe_bpp = 24;
9218 case PIPECONF_10BPC:
9219 pipe_config->pipe_bpp = 30;
9221 case PIPECONF_12BPC:
9222 pipe_config->pipe_bpp = 36;
9228 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
9229 pipe_config->limited_color_range = true;
9231 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
9232 struct intel_shared_dpll *pll;
9234 pipe_config->has_pch_encoder = true;
9236 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
9237 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9238 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9240 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9242 if (HAS_PCH_IBX(dev_priv->dev)) {
9243 pipe_config->shared_dpll =
9244 (enum intel_dpll_id) crtc->pipe;
9246 tmp = I915_READ(PCH_DPLL_SEL);
9247 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
9248 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
9250 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
9253 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9255 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9256 &pipe_config->dpll_hw_state));
9258 tmp = pipe_config->dpll_hw_state.dpll;
9259 pipe_config->pixel_multiplier =
9260 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
9261 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
9263 ironlake_pch_clock_get(crtc, pipe_config);
9265 pipe_config->pixel_multiplier = 1;
9268 intel_get_pipe_timings(crtc, pipe_config);
9270 ironlake_get_pfit_config(crtc, pipe_config);
9275 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
9277 struct drm_device *dev = dev_priv->dev;
9278 struct intel_crtc *crtc;
9280 for_each_intel_crtc(dev, crtc)
9281 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
9282 pipe_name(crtc->pipe));
9284 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
9285 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
9286 I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
9287 I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
9288 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
9289 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
9290 "CPU PWM1 enabled\n");
9291 if (IS_HASWELL(dev))
9292 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
9293 "CPU PWM2 enabled\n");
9294 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
9295 "PCH PWM1 enabled\n");
9296 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
9297 "Utility pin enabled\n");
9298 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
9301 * In theory we can still leave IRQs enabled, as long as only the HPD
9302 * interrupts remain enabled. We used to check for that, but since it's
9303 * gen-specific and since we only disable LCPLL after we fully disable
9304 * the interrupts, the check below should be enough.
9306 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
9309 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
9311 struct drm_device *dev = dev_priv->dev;
9313 if (IS_HASWELL(dev))
9314 return I915_READ(D_COMP_HSW);
9316 return I915_READ(D_COMP_BDW);
9319 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
9321 struct drm_device *dev = dev_priv->dev;
9323 if (IS_HASWELL(dev)) {
9324 mutex_lock(&dev_priv->rps.hw_lock);
9325 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
9327 DRM_ERROR("Failed to write to D_COMP\n");
9328 mutex_unlock(&dev_priv->rps.hw_lock);
9330 I915_WRITE(D_COMP_BDW, val);
9331 POSTING_READ(D_COMP_BDW);
9336 * This function implements pieces of two sequences from BSpec:
9337 * - Sequence for display software to disable LCPLL
9338 * - Sequence for display software to allow package C8+
9339 * The steps implemented here are just the steps that actually touch the LCPLL
9340 * register. Callers should take care of disabling all the display engine
9341 * functions, doing the mode unset, fixing interrupts, etc.
9343 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
9344 bool switch_to_fclk, bool allow_power_down)
9348 assert_can_disable_lcpll(dev_priv);
9350 val = I915_READ(LCPLL_CTL);
9352 if (switch_to_fclk) {
9353 val |= LCPLL_CD_SOURCE_FCLK;
9354 I915_WRITE(LCPLL_CTL, val);
9356 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9357 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9358 DRM_ERROR("Switching to FCLK failed\n");
9360 val = I915_READ(LCPLL_CTL);
9363 val |= LCPLL_PLL_DISABLE;
9364 I915_WRITE(LCPLL_CTL, val);
9365 POSTING_READ(LCPLL_CTL);
9367 if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
9368 DRM_ERROR("LCPLL still locked\n");
9370 val = hsw_read_dcomp(dev_priv);
9371 val |= D_COMP_COMP_DISABLE;
9372 hsw_write_dcomp(dev_priv, val);
9375 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
9377 DRM_ERROR("D_COMP RCOMP still in progress\n");
9379 if (allow_power_down) {
9380 val = I915_READ(LCPLL_CTL);
9381 val |= LCPLL_POWER_DOWN_ALLOW;
9382 I915_WRITE(LCPLL_CTL, val);
9383 POSTING_READ(LCPLL_CTL);
9388 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
9391 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
9395 val = I915_READ(LCPLL_CTL);
9397 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
9398 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
9402 * Make sure we're not on PC8 state before disabling PC8, otherwise
9403 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
9405 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
9407 if (val & LCPLL_POWER_DOWN_ALLOW) {
9408 val &= ~LCPLL_POWER_DOWN_ALLOW;
9409 I915_WRITE(LCPLL_CTL, val);
9410 POSTING_READ(LCPLL_CTL);
9413 val = hsw_read_dcomp(dev_priv);
9414 val |= D_COMP_COMP_FORCE;
9415 val &= ~D_COMP_COMP_DISABLE;
9416 hsw_write_dcomp(dev_priv, val);
9418 val = I915_READ(LCPLL_CTL);
9419 val &= ~LCPLL_PLL_DISABLE;
9420 I915_WRITE(LCPLL_CTL, val);
9422 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
9423 DRM_ERROR("LCPLL not locked yet\n");
9425 if (val & LCPLL_CD_SOURCE_FCLK) {
9426 val = I915_READ(LCPLL_CTL);
9427 val &= ~LCPLL_CD_SOURCE_FCLK;
9428 I915_WRITE(LCPLL_CTL, val);
9430 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9431 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9432 DRM_ERROR("Switching back to LCPLL failed\n");
9435 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
9436 intel_update_cdclk(dev_priv->dev);
9440 * Package states C8 and deeper are really deep PC states that can only be
9441 * reached when all the devices on the system allow it, so even if the graphics
9442 * device allows PC8+, it doesn't mean the system will actually get to these
9443 * states. Our driver only allows PC8+ when going into runtime PM.
9445 * The requirements for PC8+ are that all the outputs are disabled, the power
9446 * well is disabled and most interrupts are disabled, and these are also
9447 * requirements for runtime PM. When these conditions are met, we manually do
9448 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
9449 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
9452 * When we really reach PC8 or deeper states (not just when we allow it) we lose
9453 * the state of some registers, so when we come back from PC8+ we need to
9454 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
9455 * need to take care of the registers kept by RC6. Notice that this happens even
9456 * if we don't put the device in PCI D3 state (which is what currently happens
9457 * because of the runtime PM support).
9459 * For more, read "Display Sequences for Package C8" on the hardware
9462 void hsw_enable_pc8(struct drm_i915_private *dev_priv)
9464 struct drm_device *dev = dev_priv->dev;
9467 DRM_DEBUG_KMS("Enabling package C8+\n");
9469 if (HAS_PCH_LPT_LP(dev)) {
9470 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9471 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
9472 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9475 lpt_disable_clkout_dp(dev);
9476 hsw_disable_lcpll(dev_priv, true, true);
9479 void hsw_disable_pc8(struct drm_i915_private *dev_priv)
9481 struct drm_device *dev = dev_priv->dev;
9484 DRM_DEBUG_KMS("Disabling package C8+\n");
9486 hsw_restore_lcpll(dev_priv);
9487 lpt_init_pch_refclk(dev);
9489 if (HAS_PCH_LPT_LP(dev)) {
9490 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9491 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
9492 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9495 intel_prepare_ddi(dev);
9498 static void broxton_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9500 struct drm_device *dev = old_state->dev;
9501 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9503 broxton_set_cdclk(dev, req_cdclk);
9506 /* compute the max rate for new configuration */
9507 static int ilk_max_pixel_rate(struct drm_atomic_state *state)
9509 struct intel_crtc *intel_crtc;
9510 struct intel_crtc_state *crtc_state;
9511 int max_pixel_rate = 0;
9513 for_each_intel_crtc(state->dev, intel_crtc) {
9516 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
9517 if (IS_ERR(crtc_state))
9518 return PTR_ERR(crtc_state);
9520 if (!crtc_state->base.enable)
9523 pixel_rate = ilk_pipe_pixel_rate(crtc_state);
9525 /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
9526 if (IS_BROADWELL(state->dev) && crtc_state->ips_enabled)
9527 pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95);
9529 max_pixel_rate = max(max_pixel_rate, pixel_rate);
9532 return max_pixel_rate;
9535 static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
9537 struct drm_i915_private *dev_priv = dev->dev_private;
9541 if (WARN((I915_READ(LCPLL_CTL) &
9542 (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
9543 LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
9544 LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
9545 LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
9546 "trying to change cdclk frequency with cdclk not enabled\n"))
9549 mutex_lock(&dev_priv->rps.hw_lock);
9550 ret = sandybridge_pcode_write(dev_priv,
9551 BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
9552 mutex_unlock(&dev_priv->rps.hw_lock);
9554 DRM_ERROR("failed to inform pcode about cdclk change\n");
9558 val = I915_READ(LCPLL_CTL);
9559 val |= LCPLL_CD_SOURCE_FCLK;
9560 I915_WRITE(LCPLL_CTL, val);
9562 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9563 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9564 DRM_ERROR("Switching to FCLK failed\n");
9566 val = I915_READ(LCPLL_CTL);
9567 val &= ~LCPLL_CLK_FREQ_MASK;
9571 val |= LCPLL_CLK_FREQ_450;
9575 val |= LCPLL_CLK_FREQ_54O_BDW;
9579 val |= LCPLL_CLK_FREQ_337_5_BDW;
9583 val |= LCPLL_CLK_FREQ_675_BDW;
9587 WARN(1, "invalid cdclk frequency\n");
9591 I915_WRITE(LCPLL_CTL, val);
9593 val = I915_READ(LCPLL_CTL);
9594 val &= ~LCPLL_CD_SOURCE_FCLK;
9595 I915_WRITE(LCPLL_CTL, val);
9597 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9598 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9599 DRM_ERROR("Switching back to LCPLL failed\n");
9601 mutex_lock(&dev_priv->rps.hw_lock);
9602 sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
9603 mutex_unlock(&dev_priv->rps.hw_lock);
9605 intel_update_cdclk(dev);
9607 WARN(cdclk != dev_priv->cdclk_freq,
9608 "cdclk requested %d kHz but got %d kHz\n",
9609 cdclk, dev_priv->cdclk_freq);
9612 static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state)
9614 struct drm_i915_private *dev_priv = to_i915(state->dev);
9615 int max_pixclk = ilk_max_pixel_rate(state);
9619 * FIXME should also account for plane ratio
9620 * once 64bpp pixel formats are supported.
9622 if (max_pixclk > 540000)
9624 else if (max_pixclk > 450000)
9626 else if (max_pixclk > 337500)
9632 * FIXME move the cdclk caclulation to
9633 * compute_config() so we can fail gracegully.
9635 if (cdclk > dev_priv->max_cdclk_freq) {
9636 DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
9637 cdclk, dev_priv->max_cdclk_freq);
9638 cdclk = dev_priv->max_cdclk_freq;
9641 to_intel_atomic_state(state)->cdclk = cdclk;
9646 static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9648 struct drm_device *dev = old_state->dev;
9649 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9651 broadwell_set_cdclk(dev, req_cdclk);
9654 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9655 struct intel_crtc_state *crtc_state)
9657 if (!intel_ddi_pll_select(crtc, crtc_state))
9660 crtc->lowfreq_avail = false;
9665 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9667 struct intel_crtc_state *pipe_config)
9671 pipe_config->ddi_pll_sel = SKL_DPLL0;
9672 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9675 pipe_config->ddi_pll_sel = SKL_DPLL1;
9676 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9679 pipe_config->ddi_pll_sel = SKL_DPLL2;
9680 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9683 DRM_ERROR("Incorrect port type\n");
9687 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9689 struct intel_crtc_state *pipe_config)
9691 u32 temp, dpll_ctl1;
9693 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9694 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
9696 switch (pipe_config->ddi_pll_sel) {
9699 * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
9700 * of the shared DPLL framework and thus needs to be read out
9703 dpll_ctl1 = I915_READ(DPLL_CTRL1);
9704 pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
9707 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9710 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9713 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9718 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
9720 struct intel_crtc_state *pipe_config)
9722 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
9724 switch (pipe_config->ddi_pll_sel) {
9725 case PORT_CLK_SEL_WRPLL1:
9726 pipe_config->shared_dpll = DPLL_ID_WRPLL1;
9728 case PORT_CLK_SEL_WRPLL2:
9729 pipe_config->shared_dpll = DPLL_ID_WRPLL2;
9731 case PORT_CLK_SEL_SPLL:
9732 pipe_config->shared_dpll = DPLL_ID_SPLL;
9736 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
9737 struct intel_crtc_state *pipe_config)
9739 struct drm_device *dev = crtc->base.dev;
9740 struct drm_i915_private *dev_priv = dev->dev_private;
9741 struct intel_shared_dpll *pll;
9745 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
9747 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
9749 if (IS_SKYLAKE(dev))
9750 skylake_get_ddi_pll(dev_priv, port, pipe_config);
9751 else if (IS_BROXTON(dev))
9752 bxt_get_ddi_pll(dev_priv, port, pipe_config);
9754 haswell_get_ddi_pll(dev_priv, port, pipe_config);
9756 if (pipe_config->shared_dpll >= 0) {
9757 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9759 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9760 &pipe_config->dpll_hw_state));
9764 * Haswell has only FDI/PCH transcoder A. It is which is connected to
9765 * DDI E. So just check whether this pipe is wired to DDI E and whether
9766 * the PCH transcoder is on.
9768 if (INTEL_INFO(dev)->gen < 9 &&
9769 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
9770 pipe_config->has_pch_encoder = true;
9772 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
9773 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9774 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9776 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9780 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
9781 struct intel_crtc_state *pipe_config)
9783 struct drm_device *dev = crtc->base.dev;
9784 struct drm_i915_private *dev_priv = dev->dev_private;
9785 enum intel_display_power_domain pfit_domain;
9788 if (!intel_display_power_is_enabled(dev_priv,
9789 POWER_DOMAIN_PIPE(crtc->pipe)))
9792 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9793 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9795 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
9796 if (tmp & TRANS_DDI_FUNC_ENABLE) {
9797 enum pipe trans_edp_pipe;
9798 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
9800 WARN(1, "unknown pipe linked to edp transcoder\n");
9801 case TRANS_DDI_EDP_INPUT_A_ONOFF:
9802 case TRANS_DDI_EDP_INPUT_A_ON:
9803 trans_edp_pipe = PIPE_A;
9805 case TRANS_DDI_EDP_INPUT_B_ONOFF:
9806 trans_edp_pipe = PIPE_B;
9808 case TRANS_DDI_EDP_INPUT_C_ONOFF:
9809 trans_edp_pipe = PIPE_C;
9813 if (trans_edp_pipe == crtc->pipe)
9814 pipe_config->cpu_transcoder = TRANSCODER_EDP;
9817 if (!intel_display_power_is_enabled(dev_priv,
9818 POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
9821 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
9822 if (!(tmp & PIPECONF_ENABLE))
9825 haswell_get_ddi_port_state(crtc, pipe_config);
9827 intel_get_pipe_timings(crtc, pipe_config);
9829 if (INTEL_INFO(dev)->gen >= 9) {
9830 skl_init_scalers(dev, crtc, pipe_config);
9833 pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
9835 if (INTEL_INFO(dev)->gen >= 9) {
9836 pipe_config->scaler_state.scaler_id = -1;
9837 pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
9840 if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
9841 if (INTEL_INFO(dev)->gen >= 9)
9842 skylake_get_pfit_config(crtc, pipe_config);
9844 ironlake_get_pfit_config(crtc, pipe_config);
9847 if (IS_HASWELL(dev))
9848 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
9849 (I915_READ(IPS_CTL) & IPS_ENABLE);
9851 if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
9852 pipe_config->pixel_multiplier =
9853 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
9855 pipe_config->pixel_multiplier = 1;
9861 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
9863 struct drm_device *dev = crtc->dev;
9864 struct drm_i915_private *dev_priv = dev->dev_private;
9865 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9866 uint32_t cntl = 0, size = 0;
9869 unsigned int width = intel_crtc->base.cursor->state->crtc_w;
9870 unsigned int height = intel_crtc->base.cursor->state->crtc_h;
9871 unsigned int stride = roundup_pow_of_two(width) * 4;
9875 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
9886 cntl |= CURSOR_ENABLE |
9887 CURSOR_GAMMA_ENABLE |
9888 CURSOR_FORMAT_ARGB |
9889 CURSOR_STRIDE(stride);
9891 size = (height << 12) | width;
9894 if (intel_crtc->cursor_cntl != 0 &&
9895 (intel_crtc->cursor_base != base ||
9896 intel_crtc->cursor_size != size ||
9897 intel_crtc->cursor_cntl != cntl)) {
9898 /* On these chipsets we can only modify the base/size/stride
9899 * whilst the cursor is disabled.
9901 I915_WRITE(CURCNTR(PIPE_A), 0);
9902 POSTING_READ(CURCNTR(PIPE_A));
9903 intel_crtc->cursor_cntl = 0;
9906 if (intel_crtc->cursor_base != base) {
9907 I915_WRITE(CURBASE(PIPE_A), base);
9908 intel_crtc->cursor_base = base;
9911 if (intel_crtc->cursor_size != size) {
9912 I915_WRITE(CURSIZE, size);
9913 intel_crtc->cursor_size = size;
9916 if (intel_crtc->cursor_cntl != cntl) {
9917 I915_WRITE(CURCNTR(PIPE_A), cntl);
9918 POSTING_READ(CURCNTR(PIPE_A));
9919 intel_crtc->cursor_cntl = cntl;
9923 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
9925 struct drm_device *dev = crtc->dev;
9926 struct drm_i915_private *dev_priv = dev->dev_private;
9927 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9928 int pipe = intel_crtc->pipe;
9933 cntl = MCURSOR_GAMMA_ENABLE;
9934 switch (intel_crtc->base.cursor->state->crtc_w) {
9936 cntl |= CURSOR_MODE_64_ARGB_AX;
9939 cntl |= CURSOR_MODE_128_ARGB_AX;
9942 cntl |= CURSOR_MODE_256_ARGB_AX;
9945 MISSING_CASE(intel_crtc->base.cursor->state->crtc_w);
9948 cntl |= pipe << 28; /* Connect to correct pipe */
9951 cntl |= CURSOR_PIPE_CSC_ENABLE;
9954 if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
9955 cntl |= CURSOR_ROTATE_180;
9957 if (intel_crtc->cursor_cntl != cntl) {
9958 I915_WRITE(CURCNTR(pipe), cntl);
9959 POSTING_READ(CURCNTR(pipe));
9960 intel_crtc->cursor_cntl = cntl;
9963 /* and commit changes on next vblank */
9964 I915_WRITE(CURBASE(pipe), base);
9965 POSTING_READ(CURBASE(pipe));
9967 intel_crtc->cursor_base = base;
9970 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
9971 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
9974 struct drm_device *dev = crtc->dev;
9975 struct drm_i915_private *dev_priv = dev->dev_private;
9976 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9977 int pipe = intel_crtc->pipe;
9978 struct drm_plane_state *cursor_state = crtc->cursor->state;
9979 int x = cursor_state->crtc_x;
9980 int y = cursor_state->crtc_y;
9981 u32 base = 0, pos = 0;
9984 base = intel_crtc->cursor_addr;
9986 if (x >= intel_crtc->config->pipe_src_w)
9989 if (y >= intel_crtc->config->pipe_src_h)
9993 if (x + cursor_state->crtc_w <= 0)
9996 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
9999 pos |= x << CURSOR_X_SHIFT;
10002 if (y + cursor_state->crtc_h <= 0)
10005 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
10008 pos |= y << CURSOR_Y_SHIFT;
10010 if (base == 0 && intel_crtc->cursor_base == 0)
10013 I915_WRITE(CURPOS(pipe), pos);
10015 /* ILK+ do this automagically */
10016 if (HAS_GMCH_DISPLAY(dev) &&
10017 crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
10018 base += (cursor_state->crtc_h *
10019 cursor_state->crtc_w - 1) * 4;
10022 if (IS_845G(dev) || IS_I865G(dev))
10023 i845_update_cursor(crtc, base);
10025 i9xx_update_cursor(crtc, base);
10028 static bool cursor_size_ok(struct drm_device *dev,
10029 uint32_t width, uint32_t height)
10031 if (width == 0 || height == 0)
10035 * 845g/865g are special in that they are only limited by
10036 * the width of their cursors, the height is arbitrary up to
10037 * the precision of the register. Everything else requires
10038 * square cursors, limited to a few power-of-two sizes.
10040 if (IS_845G(dev) || IS_I865G(dev)) {
10041 if ((width & 63) != 0)
10044 if (width > (IS_845G(dev) ? 64 : 512))
10050 switch (width | height) {
10065 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
10066 u16 *blue, uint32_t start, uint32_t size)
10068 int end = (start + size > 256) ? 256 : start + size, i;
10069 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10071 for (i = start; i < end; i++) {
10072 intel_crtc->lut_r[i] = red[i] >> 8;
10073 intel_crtc->lut_g[i] = green[i] >> 8;
10074 intel_crtc->lut_b[i] = blue[i] >> 8;
10077 intel_crtc_load_lut(crtc);
10080 /* VESA 640x480x72Hz mode to set on the pipe */
10081 static struct drm_display_mode load_detect_mode = {
10082 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
10083 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
10086 struct drm_framebuffer *
10087 __intel_framebuffer_create(struct drm_device *dev,
10088 struct drm_mode_fb_cmd2 *mode_cmd,
10089 struct drm_i915_gem_object *obj)
10091 struct intel_framebuffer *intel_fb;
10094 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
10096 drm_gem_object_unreference(&obj->base);
10097 return ERR_PTR(-ENOMEM);
10100 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
10104 return &intel_fb->base;
10106 drm_gem_object_unreference(&obj->base);
10109 return ERR_PTR(ret);
10112 static struct drm_framebuffer *
10113 intel_framebuffer_create(struct drm_device *dev,
10114 struct drm_mode_fb_cmd2 *mode_cmd,
10115 struct drm_i915_gem_object *obj)
10117 struct drm_framebuffer *fb;
10120 ret = i915_mutex_lock_interruptible(dev);
10122 return ERR_PTR(ret);
10123 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
10124 mutex_unlock(&dev->struct_mutex);
10130 intel_framebuffer_pitch_for_width(int width, int bpp)
10132 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
10133 return ALIGN(pitch, 64);
10137 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
10139 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
10140 return PAGE_ALIGN(pitch * mode->vdisplay);
10143 static struct drm_framebuffer *
10144 intel_framebuffer_create_for_mode(struct drm_device *dev,
10145 struct drm_display_mode *mode,
10146 int depth, int bpp)
10148 struct drm_i915_gem_object *obj;
10149 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
10151 obj = i915_gem_alloc_object(dev,
10152 intel_framebuffer_size_for_mode(mode, bpp));
10154 return ERR_PTR(-ENOMEM);
10156 mode_cmd.width = mode->hdisplay;
10157 mode_cmd.height = mode->vdisplay;
10158 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
10160 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
10162 return intel_framebuffer_create(dev, &mode_cmd, obj);
10165 static struct drm_framebuffer *
10166 mode_fits_in_fbdev(struct drm_device *dev,
10167 struct drm_display_mode *mode)
10169 #ifdef CONFIG_DRM_FBDEV_EMULATION
10170 struct drm_i915_private *dev_priv = dev->dev_private;
10171 struct drm_i915_gem_object *obj;
10172 struct drm_framebuffer *fb;
10174 if (!dev_priv->fbdev)
10177 if (!dev_priv->fbdev->fb)
10180 obj = dev_priv->fbdev->fb->obj;
10183 fb = &dev_priv->fbdev->fb->base;
10184 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
10185 fb->bits_per_pixel))
10188 if (obj->base.size < mode->vdisplay * fb->pitches[0])
10197 static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
10198 struct drm_crtc *crtc,
10199 struct drm_display_mode *mode,
10200 struct drm_framebuffer *fb,
10203 struct drm_plane_state *plane_state;
10204 int hdisplay, vdisplay;
10207 plane_state = drm_atomic_get_plane_state(state, crtc->primary);
10208 if (IS_ERR(plane_state))
10209 return PTR_ERR(plane_state);
10212 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
10214 hdisplay = vdisplay = 0;
10216 ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
10219 drm_atomic_set_fb_for_plane(plane_state, fb);
10220 plane_state->crtc_x = 0;
10221 plane_state->crtc_y = 0;
10222 plane_state->crtc_w = hdisplay;
10223 plane_state->crtc_h = vdisplay;
10224 plane_state->src_x = x << 16;
10225 plane_state->src_y = y << 16;
10226 plane_state->src_w = hdisplay << 16;
10227 plane_state->src_h = vdisplay << 16;
10232 bool intel_get_load_detect_pipe(struct drm_connector *connector,
10233 struct drm_display_mode *mode,
10234 struct intel_load_detect_pipe *old,
10235 struct drm_modeset_acquire_ctx *ctx)
10237 struct intel_crtc *intel_crtc;
10238 struct intel_encoder *intel_encoder =
10239 intel_attached_encoder(connector);
10240 struct drm_crtc *possible_crtc;
10241 struct drm_encoder *encoder = &intel_encoder->base;
10242 struct drm_crtc *crtc = NULL;
10243 struct drm_device *dev = encoder->dev;
10244 struct drm_framebuffer *fb;
10245 struct drm_mode_config *config = &dev->mode_config;
10246 struct drm_atomic_state *state = NULL;
10247 struct drm_connector_state *connector_state;
10248 struct intel_crtc_state *crtc_state;
10251 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10252 connector->base.id, connector->name,
10253 encoder->base.id, encoder->name);
10256 ret = drm_modeset_lock(&config->connection_mutex, ctx);
10261 * Algorithm gets a little messy:
10263 * - if the connector already has an assigned crtc, use it (but make
10264 * sure it's on first)
10266 * - try to find the first unused crtc that can drive this connector,
10267 * and use that if we find one
10270 /* See if we already have a CRTC for this connector */
10271 if (encoder->crtc) {
10272 crtc = encoder->crtc;
10274 ret = drm_modeset_lock(&crtc->mutex, ctx);
10277 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10281 old->dpms_mode = connector->dpms;
10282 old->load_detect_temp = false;
10284 /* Make sure the crtc and connector are running */
10285 if (connector->dpms != DRM_MODE_DPMS_ON)
10286 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
10291 /* Find an unused one (if possible) */
10292 for_each_crtc(dev, possible_crtc) {
10294 if (!(encoder->possible_crtcs & (1 << i)))
10296 if (possible_crtc->state->enable)
10299 crtc = possible_crtc;
10304 * If we didn't find an unused CRTC, don't use any.
10307 DRM_DEBUG_KMS("no pipe available for load-detect\n");
10311 ret = drm_modeset_lock(&crtc->mutex, ctx);
10314 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10318 intel_crtc = to_intel_crtc(crtc);
10319 old->dpms_mode = connector->dpms;
10320 old->load_detect_temp = true;
10321 old->release_fb = NULL;
10323 state = drm_atomic_state_alloc(dev);
10327 state->acquire_ctx = ctx;
10329 connector_state = drm_atomic_get_connector_state(state, connector);
10330 if (IS_ERR(connector_state)) {
10331 ret = PTR_ERR(connector_state);
10335 connector_state->crtc = crtc;
10336 connector_state->best_encoder = &intel_encoder->base;
10338 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10339 if (IS_ERR(crtc_state)) {
10340 ret = PTR_ERR(crtc_state);
10344 crtc_state->base.active = crtc_state->base.enable = true;
10347 mode = &load_detect_mode;
10349 /* We need a framebuffer large enough to accommodate all accesses
10350 * that the plane may generate whilst we perform load detection.
10351 * We can not rely on the fbcon either being present (we get called
10352 * during its initialisation to detect all boot displays, or it may
10353 * not even exist) or that it is large enough to satisfy the
10356 fb = mode_fits_in_fbdev(dev, mode);
10358 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
10359 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
10360 old->release_fb = fb;
10362 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
10364 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
10368 ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
10372 drm_mode_copy(&crtc_state->base.mode, mode);
10374 if (drm_atomic_commit(state)) {
10375 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
10376 if (old->release_fb)
10377 old->release_fb->funcs->destroy(old->release_fb);
10380 crtc->primary->crtc = crtc;
10382 /* let the connector get through one full cycle before testing */
10383 intel_wait_for_vblank(dev, intel_crtc->pipe);
10387 drm_atomic_state_free(state);
10390 if (ret == -EDEADLK) {
10391 drm_modeset_backoff(ctx);
10398 void intel_release_load_detect_pipe(struct drm_connector *connector,
10399 struct intel_load_detect_pipe *old,
10400 struct drm_modeset_acquire_ctx *ctx)
10402 struct drm_device *dev = connector->dev;
10403 struct intel_encoder *intel_encoder =
10404 intel_attached_encoder(connector);
10405 struct drm_encoder *encoder = &intel_encoder->base;
10406 struct drm_crtc *crtc = encoder->crtc;
10407 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10408 struct drm_atomic_state *state;
10409 struct drm_connector_state *connector_state;
10410 struct intel_crtc_state *crtc_state;
10413 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10414 connector->base.id, connector->name,
10415 encoder->base.id, encoder->name);
10417 if (old->load_detect_temp) {
10418 state = drm_atomic_state_alloc(dev);
10422 state->acquire_ctx = ctx;
10424 connector_state = drm_atomic_get_connector_state(state, connector);
10425 if (IS_ERR(connector_state))
10428 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10429 if (IS_ERR(crtc_state))
10432 connector_state->best_encoder = NULL;
10433 connector_state->crtc = NULL;
10435 crtc_state->base.enable = crtc_state->base.active = false;
10437 ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL,
10442 ret = drm_atomic_commit(state);
10446 if (old->release_fb) {
10447 drm_framebuffer_unregister_private(old->release_fb);
10448 drm_framebuffer_unreference(old->release_fb);
10454 /* Switch crtc and encoder back off if necessary */
10455 if (old->dpms_mode != DRM_MODE_DPMS_ON)
10456 connector->funcs->dpms(connector, old->dpms_mode);
10460 DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
10461 drm_atomic_state_free(state);
10464 static int i9xx_pll_refclk(struct drm_device *dev,
10465 const struct intel_crtc_state *pipe_config)
10467 struct drm_i915_private *dev_priv = dev->dev_private;
10468 u32 dpll = pipe_config->dpll_hw_state.dpll;
10470 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
10471 return dev_priv->vbt.lvds_ssc_freq;
10472 else if (HAS_PCH_SPLIT(dev))
10474 else if (!IS_GEN2(dev))
10480 /* Returns the clock of the currently programmed mode of the given pipe. */
10481 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
10482 struct intel_crtc_state *pipe_config)
10484 struct drm_device *dev = crtc->base.dev;
10485 struct drm_i915_private *dev_priv = dev->dev_private;
10486 int pipe = pipe_config->cpu_transcoder;
10487 u32 dpll = pipe_config->dpll_hw_state.dpll;
10489 intel_clock_t clock;
10491 int refclk = i9xx_pll_refclk(dev, pipe_config);
10493 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
10494 fp = pipe_config->dpll_hw_state.fp0;
10496 fp = pipe_config->dpll_hw_state.fp1;
10498 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
10499 if (IS_PINEVIEW(dev)) {
10500 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10501 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
10503 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10504 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10507 if (!IS_GEN2(dev)) {
10508 if (IS_PINEVIEW(dev))
10509 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10510 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
10512 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
10513 DPLL_FPA01_P1_POST_DIV_SHIFT);
10515 switch (dpll & DPLL_MODE_MASK) {
10516 case DPLLB_MODE_DAC_SERIAL:
10517 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10520 case DPLLB_MODE_LVDS:
10521 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10525 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
10526 "mode\n", (int)(dpll & DPLL_MODE_MASK));
10530 if (IS_PINEVIEW(dev))
10531 port_clock = pnv_calc_dpll_params(refclk, &clock);
10533 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10535 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
10536 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
10539 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10540 DPLL_FPA01_P1_POST_DIV_SHIFT);
10542 if (lvds & LVDS_CLKB_POWER_UP)
10547 if (dpll & PLL_P1_DIVIDE_BY_TWO)
10550 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10551 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10553 if (dpll & PLL_P2_DIVIDE_BY_4)
10559 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10563 * This value includes pixel_multiplier. We will use
10564 * port_clock to compute adjusted_mode.crtc_clock in the
10565 * encoder's get_config() function.
10567 pipe_config->port_clock = port_clock;
10570 int intel_dotclock_calculate(int link_freq,
10571 const struct intel_link_m_n *m_n)
10574 * The calculation for the data clock is:
10575 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
10576 * But we want to avoid losing precison if possible, so:
10577 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
10579 * and the link clock is simpler:
10580 * link_clock = (m * link_clock) / n
10586 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
10589 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
10590 struct intel_crtc_state *pipe_config)
10592 struct drm_device *dev = crtc->base.dev;
10594 /* read out port_clock from the DPLL */
10595 i9xx_crtc_clock_get(crtc, pipe_config);
10598 * This value does not include pixel_multiplier.
10599 * We will check that port_clock and adjusted_mode.crtc_clock
10600 * agree once we know their relationship in the encoder's
10601 * get_config() function.
10603 pipe_config->base.adjusted_mode.crtc_clock =
10604 intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
10605 &pipe_config->fdi_m_n);
10608 /** Returns the currently programmed mode of the given pipe. */
10609 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
10610 struct drm_crtc *crtc)
10612 struct drm_i915_private *dev_priv = dev->dev_private;
10613 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10614 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
10615 struct drm_display_mode *mode;
10616 struct intel_crtc_state pipe_config;
10617 int htot = I915_READ(HTOTAL(cpu_transcoder));
10618 int hsync = I915_READ(HSYNC(cpu_transcoder));
10619 int vtot = I915_READ(VTOTAL(cpu_transcoder));
10620 int vsync = I915_READ(VSYNC(cpu_transcoder));
10621 enum pipe pipe = intel_crtc->pipe;
10623 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10628 * Construct a pipe_config sufficient for getting the clock info
10629 * back out of crtc_clock_get.
10631 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
10632 * to use a real value here instead.
10634 pipe_config.cpu_transcoder = (enum transcoder) pipe;
10635 pipe_config.pixel_multiplier = 1;
10636 pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
10637 pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
10638 pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
10639 i9xx_crtc_clock_get(intel_crtc, &pipe_config);
10641 mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
10642 mode->hdisplay = (htot & 0xffff) + 1;
10643 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
10644 mode->hsync_start = (hsync & 0xffff) + 1;
10645 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
10646 mode->vdisplay = (vtot & 0xffff) + 1;
10647 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
10648 mode->vsync_start = (vsync & 0xffff) + 1;
10649 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
10651 drm_mode_set_name(mode);
10656 void intel_mark_busy(struct drm_device *dev)
10658 struct drm_i915_private *dev_priv = dev->dev_private;
10660 if (dev_priv->mm.busy)
10663 intel_runtime_pm_get(dev_priv);
10664 i915_update_gfx_val(dev_priv);
10665 if (INTEL_INFO(dev)->gen >= 6)
10666 gen6_rps_busy(dev_priv);
10667 dev_priv->mm.busy = true;
10670 void intel_mark_idle(struct drm_device *dev)
10672 struct drm_i915_private *dev_priv = dev->dev_private;
10674 if (!dev_priv->mm.busy)
10677 dev_priv->mm.busy = false;
10679 if (INTEL_INFO(dev)->gen >= 6)
10680 gen6_rps_idle(dev->dev_private);
10682 intel_runtime_pm_put(dev_priv);
10685 static void intel_crtc_destroy(struct drm_crtc *crtc)
10687 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10688 struct drm_device *dev = crtc->dev;
10689 struct intel_unpin_work *work;
10691 spin_lock_irq(&dev->event_lock);
10692 work = intel_crtc->unpin_work;
10693 intel_crtc->unpin_work = NULL;
10694 spin_unlock_irq(&dev->event_lock);
10697 cancel_work_sync(&work->work);
10701 drm_crtc_cleanup(crtc);
10706 static void intel_unpin_work_fn(struct work_struct *__work)
10708 struct intel_unpin_work *work =
10709 container_of(__work, struct intel_unpin_work, work);
10710 struct intel_crtc *crtc = to_intel_crtc(work->crtc);
10711 struct drm_device *dev = crtc->base.dev;
10712 struct drm_plane *primary = crtc->base.primary;
10714 mutex_lock(&dev->struct_mutex);
10715 intel_unpin_fb_obj(work->old_fb, primary->state);
10716 drm_gem_object_unreference(&work->pending_flip_obj->base);
10718 if (work->flip_queued_req)
10719 i915_gem_request_assign(&work->flip_queued_req, NULL);
10720 mutex_unlock(&dev->struct_mutex);
10722 intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit);
10723 drm_framebuffer_unreference(work->old_fb);
10725 BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
10726 atomic_dec(&crtc->unpin_work_count);
10731 static void do_intel_finish_page_flip(struct drm_device *dev,
10732 struct drm_crtc *crtc)
10734 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10735 struct intel_unpin_work *work;
10736 unsigned long flags;
10738 /* Ignore early vblank irqs */
10739 if (intel_crtc == NULL)
10743 * This is called both by irq handlers and the reset code (to complete
10744 * lost pageflips) so needs the full irqsave spinlocks.
10746 spin_lock_irqsave(&dev->event_lock, flags);
10747 work = intel_crtc->unpin_work;
10749 /* Ensure we don't miss a work->pending update ... */
10752 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
10753 spin_unlock_irqrestore(&dev->event_lock, flags);
10757 page_flip_completed(intel_crtc);
10759 spin_unlock_irqrestore(&dev->event_lock, flags);
10762 void intel_finish_page_flip(struct drm_device *dev, int pipe)
10764 struct drm_i915_private *dev_priv = dev->dev_private;
10765 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
10767 do_intel_finish_page_flip(dev, crtc);
10770 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
10772 struct drm_i915_private *dev_priv = dev->dev_private;
10773 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
10775 do_intel_finish_page_flip(dev, crtc);
10778 /* Is 'a' after or equal to 'b'? */
10779 static bool g4x_flip_count_after_eq(u32 a, u32 b)
10781 return !((a - b) & 0x80000000);
10784 static bool page_flip_finished(struct intel_crtc *crtc)
10786 struct drm_device *dev = crtc->base.dev;
10787 struct drm_i915_private *dev_priv = dev->dev_private;
10789 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
10790 crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
10794 * The relevant registers doen't exist on pre-ctg.
10795 * As the flip done interrupt doesn't trigger for mmio
10796 * flips on gmch platforms, a flip count check isn't
10797 * really needed there. But since ctg has the registers,
10798 * include it in the check anyway.
10800 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
10804 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
10805 * used the same base address. In that case the mmio flip might
10806 * have completed, but the CS hasn't even executed the flip yet.
10808 * A flip count check isn't enough as the CS might have updated
10809 * the base address just after start of vblank, but before we
10810 * managed to process the interrupt. This means we'd complete the
10811 * CS flip too soon.
10813 * Combining both checks should get us a good enough result. It may
10814 * still happen that the CS flip has been executed, but has not
10815 * yet actually completed. But in case the base address is the same
10816 * anyway, we don't really care.
10818 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
10819 crtc->unpin_work->gtt_offset &&
10820 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)),
10821 crtc->unpin_work->flip_count);
10824 void intel_prepare_page_flip(struct drm_device *dev, int plane)
10826 struct drm_i915_private *dev_priv = dev->dev_private;
10827 struct intel_crtc *intel_crtc =
10828 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
10829 unsigned long flags;
10833 * This is called both by irq handlers and the reset code (to complete
10834 * lost pageflips) so needs the full irqsave spinlocks.
10836 * NB: An MMIO update of the plane base pointer will also
10837 * generate a page-flip completion irq, i.e. every modeset
10838 * is also accompanied by a spurious intel_prepare_page_flip().
10840 spin_lock_irqsave(&dev->event_lock, flags);
10841 if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
10842 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
10843 spin_unlock_irqrestore(&dev->event_lock, flags);
10846 static inline void intel_mark_page_flip_active(struct intel_unpin_work *work)
10848 /* Ensure that the work item is consistent when activating it ... */
10850 atomic_set(&work->pending, INTEL_FLIP_PENDING);
10851 /* and that it is marked active as soon as the irq could fire. */
10855 static int intel_gen2_queue_flip(struct drm_device *dev,
10856 struct drm_crtc *crtc,
10857 struct drm_framebuffer *fb,
10858 struct drm_i915_gem_object *obj,
10859 struct drm_i915_gem_request *req,
10862 struct intel_engine_cs *ring = req->ring;
10863 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10867 ret = intel_ring_begin(req, 6);
10871 /* Can't queue multiple flips, so wait for the previous
10872 * one to finish before executing the next.
10874 if (intel_crtc->plane)
10875 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10877 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10878 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10879 intel_ring_emit(ring, MI_NOOP);
10880 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10881 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10882 intel_ring_emit(ring, fb->pitches[0]);
10883 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10884 intel_ring_emit(ring, 0); /* aux display base address, unused */
10886 intel_mark_page_flip_active(intel_crtc->unpin_work);
10890 static int intel_gen3_queue_flip(struct drm_device *dev,
10891 struct drm_crtc *crtc,
10892 struct drm_framebuffer *fb,
10893 struct drm_i915_gem_object *obj,
10894 struct drm_i915_gem_request *req,
10897 struct intel_engine_cs *ring = req->ring;
10898 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10902 ret = intel_ring_begin(req, 6);
10906 if (intel_crtc->plane)
10907 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10909 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10910 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10911 intel_ring_emit(ring, MI_NOOP);
10912 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
10913 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10914 intel_ring_emit(ring, fb->pitches[0]);
10915 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10916 intel_ring_emit(ring, MI_NOOP);
10918 intel_mark_page_flip_active(intel_crtc->unpin_work);
10922 static int intel_gen4_queue_flip(struct drm_device *dev,
10923 struct drm_crtc *crtc,
10924 struct drm_framebuffer *fb,
10925 struct drm_i915_gem_object *obj,
10926 struct drm_i915_gem_request *req,
10929 struct intel_engine_cs *ring = req->ring;
10930 struct drm_i915_private *dev_priv = dev->dev_private;
10931 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10932 uint32_t pf, pipesrc;
10935 ret = intel_ring_begin(req, 4);
10939 /* i965+ uses the linear or tiled offsets from the
10940 * Display Registers (which do not change across a page-flip)
10941 * so we need only reprogram the base address.
10943 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10944 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10945 intel_ring_emit(ring, fb->pitches[0]);
10946 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
10949 /* XXX Enabling the panel-fitter across page-flip is so far
10950 * untested on non-native modes, so ignore it for now.
10951 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
10954 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10955 intel_ring_emit(ring, pf | pipesrc);
10957 intel_mark_page_flip_active(intel_crtc->unpin_work);
10961 static int intel_gen6_queue_flip(struct drm_device *dev,
10962 struct drm_crtc *crtc,
10963 struct drm_framebuffer *fb,
10964 struct drm_i915_gem_object *obj,
10965 struct drm_i915_gem_request *req,
10968 struct intel_engine_cs *ring = req->ring;
10969 struct drm_i915_private *dev_priv = dev->dev_private;
10970 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10971 uint32_t pf, pipesrc;
10974 ret = intel_ring_begin(req, 4);
10978 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10979 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10980 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
10981 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10983 /* Contrary to the suggestions in the documentation,
10984 * "Enable Panel Fitter" does not seem to be required when page
10985 * flipping with a non-native mode, and worse causes a normal
10987 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
10990 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10991 intel_ring_emit(ring, pf | pipesrc);
10993 intel_mark_page_flip_active(intel_crtc->unpin_work);
10997 static int intel_gen7_queue_flip(struct drm_device *dev,
10998 struct drm_crtc *crtc,
10999 struct drm_framebuffer *fb,
11000 struct drm_i915_gem_object *obj,
11001 struct drm_i915_gem_request *req,
11004 struct intel_engine_cs *ring = req->ring;
11005 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11006 uint32_t plane_bit = 0;
11009 switch (intel_crtc->plane) {
11011 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
11014 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
11017 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
11020 WARN_ONCE(1, "unknown plane in flip command\n");
11025 if (ring->id == RCS) {
11028 * On Gen 8, SRM is now taking an extra dword to accommodate
11029 * 48bits addresses, and we need a NOOP for the batch size to
11037 * BSpec MI_DISPLAY_FLIP for IVB:
11038 * "The full packet must be contained within the same cache line."
11040 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
11041 * cacheline, if we ever start emitting more commands before
11042 * the MI_DISPLAY_FLIP we may need to first emit everything else,
11043 * then do the cacheline alignment, and finally emit the
11046 ret = intel_ring_cacheline_align(req);
11050 ret = intel_ring_begin(req, len);
11054 /* Unmask the flip-done completion message. Note that the bspec says that
11055 * we should do this for both the BCS and RCS, and that we must not unmask
11056 * more than one flip event at any time (or ensure that one flip message
11057 * can be sent by waiting for flip-done prior to queueing new flips).
11058 * Experimentation says that BCS works despite DERRMR masking all
11059 * flip-done completion events and that unmasking all planes at once
11060 * for the RCS also doesn't appear to drop events. Setting the DERRMR
11061 * to zero does lead to lockups within MI_DISPLAY_FLIP.
11063 if (ring->id == RCS) {
11064 intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
11065 intel_ring_emit(ring, DERRMR);
11066 intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
11067 DERRMR_PIPEB_PRI_FLIP_DONE |
11068 DERRMR_PIPEC_PRI_FLIP_DONE));
11070 intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8 |
11071 MI_SRM_LRM_GLOBAL_GTT);
11073 intel_ring_emit(ring, MI_STORE_REGISTER_MEM |
11074 MI_SRM_LRM_GLOBAL_GTT);
11075 intel_ring_emit(ring, DERRMR);
11076 intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
11077 if (IS_GEN8(dev)) {
11078 intel_ring_emit(ring, 0);
11079 intel_ring_emit(ring, MI_NOOP);
11083 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
11084 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
11085 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
11086 intel_ring_emit(ring, (MI_NOOP));
11088 intel_mark_page_flip_active(intel_crtc->unpin_work);
11092 static bool use_mmio_flip(struct intel_engine_cs *ring,
11093 struct drm_i915_gem_object *obj)
11096 * This is not being used for older platforms, because
11097 * non-availability of flip done interrupt forces us to use
11098 * CS flips. Older platforms derive flip done using some clever
11099 * tricks involving the flip_pending status bits and vblank irqs.
11100 * So using MMIO flips there would disrupt this mechanism.
11106 if (INTEL_INFO(ring->dev)->gen < 5)
11109 if (i915.use_mmio_flip < 0)
11111 else if (i915.use_mmio_flip > 0)
11113 else if (i915.enable_execlists)
11116 return ring != i915_gem_request_get_ring(obj->last_write_req);
11119 static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
11120 struct intel_unpin_work *work)
11122 struct drm_device *dev = intel_crtc->base.dev;
11123 struct drm_i915_private *dev_priv = dev->dev_private;
11124 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
11125 const enum pipe pipe = intel_crtc->pipe;
11128 ctl = I915_READ(PLANE_CTL(pipe, 0));
11129 ctl &= ~PLANE_CTL_TILED_MASK;
11130 switch (fb->modifier[0]) {
11131 case DRM_FORMAT_MOD_NONE:
11133 case I915_FORMAT_MOD_X_TILED:
11134 ctl |= PLANE_CTL_TILED_X;
11136 case I915_FORMAT_MOD_Y_TILED:
11137 ctl |= PLANE_CTL_TILED_Y;
11139 case I915_FORMAT_MOD_Yf_TILED:
11140 ctl |= PLANE_CTL_TILED_YF;
11143 MISSING_CASE(fb->modifier[0]);
11147 * The stride is either expressed as a multiple of 64 bytes chunks for
11148 * linear buffers or in number of tiles for tiled buffers.
11150 stride = fb->pitches[0] /
11151 intel_fb_stride_alignment(dev, fb->modifier[0],
11155 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
11156 * PLANE_SURF updates, the update is then guaranteed to be atomic.
11158 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
11159 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
11161 I915_WRITE(PLANE_SURF(pipe, 0), work->gtt_offset);
11162 POSTING_READ(PLANE_SURF(pipe, 0));
11165 static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc,
11166 struct intel_unpin_work *work)
11168 struct drm_device *dev = intel_crtc->base.dev;
11169 struct drm_i915_private *dev_priv = dev->dev_private;
11170 struct intel_framebuffer *intel_fb =
11171 to_intel_framebuffer(intel_crtc->base.primary->fb);
11172 struct drm_i915_gem_object *obj = intel_fb->obj;
11176 reg = DSPCNTR(intel_crtc->plane);
11177 dspcntr = I915_READ(reg);
11179 if (obj->tiling_mode != I915_TILING_NONE)
11180 dspcntr |= DISPPLANE_TILED;
11182 dspcntr &= ~DISPPLANE_TILED;
11184 I915_WRITE(reg, dspcntr);
11186 I915_WRITE(DSPSURF(intel_crtc->plane), work->gtt_offset);
11187 POSTING_READ(DSPSURF(intel_crtc->plane));
11191 * XXX: This is the temporary way to update the plane registers until we get
11192 * around to using the usual plane update functions for MMIO flips
11194 static void intel_do_mmio_flip(struct intel_mmio_flip *mmio_flip)
11196 struct intel_crtc *crtc = mmio_flip->crtc;
11197 struct intel_unpin_work *work;
11199 spin_lock_irq(&crtc->base.dev->event_lock);
11200 work = crtc->unpin_work;
11201 spin_unlock_irq(&crtc->base.dev->event_lock);
11205 intel_mark_page_flip_active(work);
11207 intel_pipe_update_start(crtc);
11209 if (INTEL_INFO(mmio_flip->i915)->gen >= 9)
11210 skl_do_mmio_flip(crtc, work);
11212 /* use_mmio_flip() retricts MMIO flips to ilk+ */
11213 ilk_do_mmio_flip(crtc, work);
11215 intel_pipe_update_end(crtc);
11218 static void intel_mmio_flip_work_func(struct work_struct *work)
11220 struct intel_mmio_flip *mmio_flip =
11221 container_of(work, struct intel_mmio_flip, work);
11223 if (mmio_flip->req) {
11224 WARN_ON(__i915_wait_request(mmio_flip->req,
11225 mmio_flip->crtc->reset_counter,
11227 &mmio_flip->i915->rps.mmioflips));
11228 i915_gem_request_unreference__unlocked(mmio_flip->req);
11231 intel_do_mmio_flip(mmio_flip);
11235 static int intel_queue_mmio_flip(struct drm_device *dev,
11236 struct drm_crtc *crtc,
11237 struct drm_framebuffer *fb,
11238 struct drm_i915_gem_object *obj,
11239 struct intel_engine_cs *ring,
11242 struct intel_mmio_flip *mmio_flip;
11244 mmio_flip = kmalloc(sizeof(*mmio_flip), GFP_KERNEL);
11245 if (mmio_flip == NULL)
11248 mmio_flip->i915 = to_i915(dev);
11249 mmio_flip->req = i915_gem_request_reference(obj->last_write_req);
11250 mmio_flip->crtc = to_intel_crtc(crtc);
11252 INIT_WORK(&mmio_flip->work, intel_mmio_flip_work_func);
11253 schedule_work(&mmio_flip->work);
11258 static int intel_default_queue_flip(struct drm_device *dev,
11259 struct drm_crtc *crtc,
11260 struct drm_framebuffer *fb,
11261 struct drm_i915_gem_object *obj,
11262 struct drm_i915_gem_request *req,
11268 static bool __intel_pageflip_stall_check(struct drm_device *dev,
11269 struct drm_crtc *crtc)
11271 struct drm_i915_private *dev_priv = dev->dev_private;
11272 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11273 struct intel_unpin_work *work = intel_crtc->unpin_work;
11276 if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
11279 if (atomic_read(&work->pending) < INTEL_FLIP_PENDING)
11282 if (!work->enable_stall_check)
11285 if (work->flip_ready_vblank == 0) {
11286 if (work->flip_queued_req &&
11287 !i915_gem_request_completed(work->flip_queued_req, true))
11290 work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
11293 if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
11296 /* Potential stall - if we see that the flip has happened,
11297 * assume a missed interrupt. */
11298 if (INTEL_INFO(dev)->gen >= 4)
11299 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
11301 addr = I915_READ(DSPADDR(intel_crtc->plane));
11303 /* There is a potential issue here with a false positive after a flip
11304 * to the same address. We could address this by checking for a
11305 * non-incrementing frame counter.
11307 return addr == work->gtt_offset;
11310 void intel_check_page_flip(struct drm_device *dev, int pipe)
11312 struct drm_i915_private *dev_priv = dev->dev_private;
11313 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11314 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11315 struct intel_unpin_work *work;
11317 WARN_ON(!in_interrupt());
11322 spin_lock(&dev->event_lock);
11323 work = intel_crtc->unpin_work;
11324 if (work != NULL && __intel_pageflip_stall_check(dev, crtc)) {
11325 WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
11326 work->flip_queued_vblank, drm_vblank_count(dev, pipe));
11327 page_flip_completed(intel_crtc);
11330 if (work != NULL &&
11331 drm_vblank_count(dev, pipe) - work->flip_queued_vblank > 1)
11332 intel_queue_rps_boost_for_request(dev, work->flip_queued_req);
11333 spin_unlock(&dev->event_lock);
11336 static int intel_crtc_page_flip(struct drm_crtc *crtc,
11337 struct drm_framebuffer *fb,
11338 struct drm_pending_vblank_event *event,
11339 uint32_t page_flip_flags)
11341 struct drm_device *dev = crtc->dev;
11342 struct drm_i915_private *dev_priv = dev->dev_private;
11343 struct drm_framebuffer *old_fb = crtc->primary->fb;
11344 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11345 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11346 struct drm_plane *primary = crtc->primary;
11347 enum pipe pipe = intel_crtc->pipe;
11348 struct intel_unpin_work *work;
11349 struct intel_engine_cs *ring;
11351 struct drm_i915_gem_request *request = NULL;
11355 * drm_mode_page_flip_ioctl() should already catch this, but double
11356 * check to be safe. In the future we may enable pageflipping from
11357 * a disabled primary plane.
11359 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
11362 /* Can't change pixel format via MI display flips. */
11363 if (fb->pixel_format != crtc->primary->fb->pixel_format)
11367 * TILEOFF/LINOFF registers can't be changed via MI display flips.
11368 * Note that pitch changes could also affect these register.
11370 if (INTEL_INFO(dev)->gen > 3 &&
11371 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
11372 fb->pitches[0] != crtc->primary->fb->pitches[0]))
11375 if (i915_terminally_wedged(&dev_priv->gpu_error))
11378 work = kzalloc(sizeof(*work), GFP_KERNEL);
11382 work->event = event;
11384 work->old_fb = old_fb;
11385 INIT_WORK(&work->work, intel_unpin_work_fn);
11387 ret = drm_crtc_vblank_get(crtc);
11391 /* We borrow the event spin lock for protecting unpin_work */
11392 spin_lock_irq(&dev->event_lock);
11393 if (intel_crtc->unpin_work) {
11394 /* Before declaring the flip queue wedged, check if
11395 * the hardware completed the operation behind our backs.
11397 if (__intel_pageflip_stall_check(dev, crtc)) {
11398 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
11399 page_flip_completed(intel_crtc);
11401 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
11402 spin_unlock_irq(&dev->event_lock);
11404 drm_crtc_vblank_put(crtc);
11409 intel_crtc->unpin_work = work;
11410 spin_unlock_irq(&dev->event_lock);
11412 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
11413 flush_workqueue(dev_priv->wq);
11415 /* Reference the objects for the scheduled work. */
11416 drm_framebuffer_reference(work->old_fb);
11417 drm_gem_object_reference(&obj->base);
11419 crtc->primary->fb = fb;
11420 update_state_fb(crtc->primary);
11422 work->pending_flip_obj = obj;
11424 ret = i915_mutex_lock_interruptible(dev);
11428 atomic_inc(&intel_crtc->unpin_work_count);
11429 intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
11431 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
11432 work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(pipe)) + 1;
11434 if (IS_VALLEYVIEW(dev)) {
11435 ring = &dev_priv->ring[BCS];
11436 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
11437 /* vlv: DISPLAY_FLIP fails to change tiling */
11439 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
11440 ring = &dev_priv->ring[BCS];
11441 } else if (INTEL_INFO(dev)->gen >= 7) {
11442 ring = i915_gem_request_get_ring(obj->last_write_req);
11443 if (ring == NULL || ring->id != RCS)
11444 ring = &dev_priv->ring[BCS];
11446 ring = &dev_priv->ring[RCS];
11449 mmio_flip = use_mmio_flip(ring, obj);
11451 /* When using CS flips, we want to emit semaphores between rings.
11452 * However, when using mmio flips we will create a task to do the
11453 * synchronisation, so all we want here is to pin the framebuffer
11454 * into the display plane and skip any waits.
11456 ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
11457 crtc->primary->state,
11458 mmio_flip ? i915_gem_request_get_ring(obj->last_write_req) : ring, &request);
11460 goto cleanup_pending;
11462 work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary),
11464 work->gtt_offset += intel_crtc->dspaddr_offset;
11467 ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
11470 goto cleanup_unpin;
11472 i915_gem_request_assign(&work->flip_queued_req,
11473 obj->last_write_req);
11476 ret = i915_gem_request_alloc(ring, ring->default_context, &request);
11478 goto cleanup_unpin;
11481 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
11484 goto cleanup_unpin;
11486 i915_gem_request_assign(&work->flip_queued_req, request);
11490 i915_add_request_no_flush(request);
11492 work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
11493 work->enable_stall_check = true;
11495 i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
11496 to_intel_plane(primary)->frontbuffer_bit);
11497 mutex_unlock(&dev->struct_mutex);
11499 intel_fbc_disable_crtc(intel_crtc);
11500 intel_frontbuffer_flip_prepare(dev,
11501 to_intel_plane(primary)->frontbuffer_bit);
11503 trace_i915_flip_request(intel_crtc->plane, obj);
11508 intel_unpin_fb_obj(fb, crtc->primary->state);
11511 i915_gem_request_cancel(request);
11512 atomic_dec(&intel_crtc->unpin_work_count);
11513 mutex_unlock(&dev->struct_mutex);
11515 crtc->primary->fb = old_fb;
11516 update_state_fb(crtc->primary);
11518 drm_gem_object_unreference_unlocked(&obj->base);
11519 drm_framebuffer_unreference(work->old_fb);
11521 spin_lock_irq(&dev->event_lock);
11522 intel_crtc->unpin_work = NULL;
11523 spin_unlock_irq(&dev->event_lock);
11525 drm_crtc_vblank_put(crtc);
11530 struct drm_atomic_state *state;
11531 struct drm_plane_state *plane_state;
11534 state = drm_atomic_state_alloc(dev);
11537 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
11540 plane_state = drm_atomic_get_plane_state(state, primary);
11541 ret = PTR_ERR_OR_ZERO(plane_state);
11543 drm_atomic_set_fb_for_plane(plane_state, fb);
11545 ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
11547 ret = drm_atomic_commit(state);
11550 if (ret == -EDEADLK) {
11551 drm_modeset_backoff(state->acquire_ctx);
11552 drm_atomic_state_clear(state);
11557 drm_atomic_state_free(state);
11559 if (ret == 0 && event) {
11560 spin_lock_irq(&dev->event_lock);
11561 drm_send_vblank_event(dev, pipe, event);
11562 spin_unlock_irq(&dev->event_lock);
11570 * intel_wm_need_update - Check whether watermarks need updating
11571 * @plane: drm plane
11572 * @state: new plane state
11574 * Check current plane state versus the new one to determine whether
11575 * watermarks need to be recalculated.
11577 * Returns true or false.
11579 static bool intel_wm_need_update(struct drm_plane *plane,
11580 struct drm_plane_state *state)
11582 /* Update watermarks on tiling changes. */
11583 if (!plane->state->fb || !state->fb ||
11584 plane->state->fb->modifier[0] != state->fb->modifier[0] ||
11585 plane->state->rotation != state->rotation)
11588 if (plane->state->crtc_w != state->crtc_w)
11594 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
11595 struct drm_plane_state *plane_state)
11597 struct drm_crtc *crtc = crtc_state->crtc;
11598 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11599 struct drm_plane *plane = plane_state->plane;
11600 struct drm_device *dev = crtc->dev;
11601 struct drm_i915_private *dev_priv = dev->dev_private;
11602 struct intel_plane_state *old_plane_state =
11603 to_intel_plane_state(plane->state);
11604 int idx = intel_crtc->base.base.id, ret;
11605 int i = drm_plane_index(plane);
11606 bool mode_changed = needs_modeset(crtc_state);
11607 bool was_crtc_enabled = crtc->state->active;
11608 bool is_crtc_enabled = crtc_state->active;
11610 bool turn_off, turn_on, visible, was_visible;
11611 struct drm_framebuffer *fb = plane_state->fb;
11613 if (crtc_state && INTEL_INFO(dev)->gen >= 9 &&
11614 plane->type != DRM_PLANE_TYPE_CURSOR) {
11615 ret = skl_update_scaler_plane(
11616 to_intel_crtc_state(crtc_state),
11617 to_intel_plane_state(plane_state));
11623 * Disabling a plane is always okay; we just need to update
11624 * fb tracking in a special way since cleanup_fb() won't
11625 * get called by the plane helpers.
11627 if (old_plane_state->base.fb && !fb)
11628 intel_crtc->atomic.disabled_planes |= 1 << i;
11630 was_visible = old_plane_state->visible;
11631 visible = to_intel_plane_state(plane_state)->visible;
11633 if (!was_crtc_enabled && WARN_ON(was_visible))
11634 was_visible = false;
11636 if (!is_crtc_enabled && WARN_ON(visible))
11639 if (!was_visible && !visible)
11642 turn_off = was_visible && (!visible || mode_changed);
11643 turn_on = visible && (!was_visible || mode_changed);
11645 DRM_DEBUG_ATOMIC("[CRTC:%i] has [PLANE:%i] with fb %i\n", idx,
11646 plane->base.id, fb ? fb->base.id : -1);
11648 DRM_DEBUG_ATOMIC("[PLANE:%i] visible %i -> %i, off %i, on %i, ms %i\n",
11649 plane->base.id, was_visible, visible,
11650 turn_off, turn_on, mode_changed);
11653 intel_crtc->atomic.update_wm_pre = true;
11654 /* must disable cxsr around plane enable/disable */
11655 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11656 intel_crtc->atomic.disable_cxsr = true;
11657 /* to potentially re-enable cxsr */
11658 intel_crtc->atomic.wait_vblank = true;
11659 intel_crtc->atomic.update_wm_post = true;
11661 } else if (turn_off) {
11662 intel_crtc->atomic.update_wm_post = true;
11663 /* must disable cxsr around plane enable/disable */
11664 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11665 if (is_crtc_enabled)
11666 intel_crtc->atomic.wait_vblank = true;
11667 intel_crtc->atomic.disable_cxsr = true;
11669 } else if (intel_wm_need_update(plane, plane_state)) {
11670 intel_crtc->atomic.update_wm_pre = true;
11673 if (visible || was_visible)
11674 intel_crtc->atomic.fb_bits |=
11675 to_intel_plane(plane)->frontbuffer_bit;
11677 switch (plane->type) {
11678 case DRM_PLANE_TYPE_PRIMARY:
11679 intel_crtc->atomic.wait_for_flips = true;
11680 intel_crtc->atomic.pre_disable_primary = turn_off;
11681 intel_crtc->atomic.post_enable_primary = turn_on;
11685 * FIXME: Actually if we will still have any other
11686 * plane enabled on the pipe we could let IPS enabled
11687 * still, but for now lets consider that when we make
11688 * primary invisible by setting DSPCNTR to 0 on
11689 * update_primary_plane function IPS needs to be
11692 intel_crtc->atomic.disable_ips = true;
11694 intel_crtc->atomic.disable_fbc = true;
11698 * FBC does not work on some platforms for rotated
11699 * planes, so disable it when rotation is not 0 and
11700 * update it when rotation is set back to 0.
11702 * FIXME: This is redundant with the fbc update done in
11703 * the primary plane enable function except that that
11704 * one is done too late. We eventually need to unify
11709 INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
11710 dev_priv->fbc.crtc == intel_crtc &&
11711 plane_state->rotation != BIT(DRM_ROTATE_0))
11712 intel_crtc->atomic.disable_fbc = true;
11715 * BDW signals flip done immediately if the plane
11716 * is disabled, even if the plane enable is already
11717 * armed to occur at the next vblank :(
11719 if (turn_on && IS_BROADWELL(dev))
11720 intel_crtc->atomic.wait_vblank = true;
11722 intel_crtc->atomic.update_fbc |= visible || mode_changed;
11724 case DRM_PLANE_TYPE_CURSOR:
11726 case DRM_PLANE_TYPE_OVERLAY:
11727 if (turn_off && !mode_changed) {
11728 intel_crtc->atomic.wait_vblank = true;
11729 intel_crtc->atomic.update_sprite_watermarks |=
11736 static bool encoders_cloneable(const struct intel_encoder *a,
11737 const struct intel_encoder *b)
11739 /* masks could be asymmetric, so check both ways */
11740 return a == b || (a->cloneable & (1 << b->type) &&
11741 b->cloneable & (1 << a->type));
11744 static bool check_single_encoder_cloning(struct drm_atomic_state *state,
11745 struct intel_crtc *crtc,
11746 struct intel_encoder *encoder)
11748 struct intel_encoder *source_encoder;
11749 struct drm_connector *connector;
11750 struct drm_connector_state *connector_state;
11753 for_each_connector_in_state(state, connector, connector_state, i) {
11754 if (connector_state->crtc != &crtc->base)
11758 to_intel_encoder(connector_state->best_encoder);
11759 if (!encoders_cloneable(encoder, source_encoder))
11766 static bool check_encoder_cloning(struct drm_atomic_state *state,
11767 struct intel_crtc *crtc)
11769 struct intel_encoder *encoder;
11770 struct drm_connector *connector;
11771 struct drm_connector_state *connector_state;
11774 for_each_connector_in_state(state, connector, connector_state, i) {
11775 if (connector_state->crtc != &crtc->base)
11778 encoder = to_intel_encoder(connector_state->best_encoder);
11779 if (!check_single_encoder_cloning(state, crtc, encoder))
11786 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
11787 struct drm_crtc_state *crtc_state)
11789 struct drm_device *dev = crtc->dev;
11790 struct drm_i915_private *dev_priv = dev->dev_private;
11791 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11792 struct intel_crtc_state *pipe_config =
11793 to_intel_crtc_state(crtc_state);
11794 struct drm_atomic_state *state = crtc_state->state;
11796 bool mode_changed = needs_modeset(crtc_state);
11798 if (mode_changed && !check_encoder_cloning(state, intel_crtc)) {
11799 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
11803 if (mode_changed && !crtc_state->active)
11804 intel_crtc->atomic.update_wm_post = true;
11806 if (mode_changed && crtc_state->enable &&
11807 dev_priv->display.crtc_compute_clock &&
11808 !WARN_ON(pipe_config->shared_dpll != DPLL_ID_PRIVATE)) {
11809 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
11816 if (INTEL_INFO(dev)->gen >= 9) {
11818 ret = skl_update_scaler_crtc(pipe_config);
11821 ret = intel_atomic_setup_scalers(dev, intel_crtc,
11828 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
11829 .mode_set_base_atomic = intel_pipe_set_base_atomic,
11830 .load_lut = intel_crtc_load_lut,
11831 .atomic_begin = intel_begin_crtc_commit,
11832 .atomic_flush = intel_finish_crtc_commit,
11833 .atomic_check = intel_crtc_atomic_check,
11836 static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
11838 struct intel_connector *connector;
11840 for_each_intel_connector(dev, connector) {
11841 if (connector->base.encoder) {
11842 connector->base.state->best_encoder =
11843 connector->base.encoder;
11844 connector->base.state->crtc =
11845 connector->base.encoder->crtc;
11847 connector->base.state->best_encoder = NULL;
11848 connector->base.state->crtc = NULL;
11854 connected_sink_compute_bpp(struct intel_connector *connector,
11855 struct intel_crtc_state *pipe_config)
11857 int bpp = pipe_config->pipe_bpp;
11859 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
11860 connector->base.base.id,
11861 connector->base.name);
11863 /* Don't use an invalid EDID bpc value */
11864 if (connector->base.display_info.bpc &&
11865 connector->base.display_info.bpc * 3 < bpp) {
11866 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
11867 bpp, connector->base.display_info.bpc*3);
11868 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
11871 /* Clamp bpp to 8 on screens without EDID 1.4 */
11872 if (connector->base.display_info.bpc == 0 && bpp > 24) {
11873 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
11875 pipe_config->pipe_bpp = 24;
11880 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
11881 struct intel_crtc_state *pipe_config)
11883 struct drm_device *dev = crtc->base.dev;
11884 struct drm_atomic_state *state;
11885 struct drm_connector *connector;
11886 struct drm_connector_state *connector_state;
11889 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)))
11891 else if (INTEL_INFO(dev)->gen >= 5)
11897 pipe_config->pipe_bpp = bpp;
11899 state = pipe_config->base.state;
11901 /* Clamp display bpp to EDID value */
11902 for_each_connector_in_state(state, connector, connector_state, i) {
11903 if (connector_state->crtc != &crtc->base)
11906 connected_sink_compute_bpp(to_intel_connector(connector),
11913 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
11915 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
11916 "type: 0x%x flags: 0x%x\n",
11918 mode->crtc_hdisplay, mode->crtc_hsync_start,
11919 mode->crtc_hsync_end, mode->crtc_htotal,
11920 mode->crtc_vdisplay, mode->crtc_vsync_start,
11921 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
11924 static void intel_dump_pipe_config(struct intel_crtc *crtc,
11925 struct intel_crtc_state *pipe_config,
11926 const char *context)
11928 struct drm_device *dev = crtc->base.dev;
11929 struct drm_plane *plane;
11930 struct intel_plane *intel_plane;
11931 struct intel_plane_state *state;
11932 struct drm_framebuffer *fb;
11934 DRM_DEBUG_KMS("[CRTC:%d]%s config %p for pipe %c\n", crtc->base.base.id,
11935 context, pipe_config, pipe_name(crtc->pipe));
11937 DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
11938 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
11939 pipe_config->pipe_bpp, pipe_config->dither);
11940 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11941 pipe_config->has_pch_encoder,
11942 pipe_config->fdi_lanes,
11943 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
11944 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
11945 pipe_config->fdi_m_n.tu);
11946 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11947 pipe_config->has_dp_encoder,
11948 pipe_config->lane_count,
11949 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
11950 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
11951 pipe_config->dp_m_n.tu);
11953 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
11954 pipe_config->has_dp_encoder,
11955 pipe_config->lane_count,
11956 pipe_config->dp_m2_n2.gmch_m,
11957 pipe_config->dp_m2_n2.gmch_n,
11958 pipe_config->dp_m2_n2.link_m,
11959 pipe_config->dp_m2_n2.link_n,
11960 pipe_config->dp_m2_n2.tu);
11962 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
11963 pipe_config->has_audio,
11964 pipe_config->has_infoframe);
11966 DRM_DEBUG_KMS("requested mode:\n");
11967 drm_mode_debug_printmodeline(&pipe_config->base.mode);
11968 DRM_DEBUG_KMS("adjusted mode:\n");
11969 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
11970 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
11971 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
11972 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
11973 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
11974 DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
11976 pipe_config->scaler_state.scaler_users,
11977 pipe_config->scaler_state.scaler_id);
11978 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
11979 pipe_config->gmch_pfit.control,
11980 pipe_config->gmch_pfit.pgm_ratios,
11981 pipe_config->gmch_pfit.lvds_border_bits);
11982 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
11983 pipe_config->pch_pfit.pos,
11984 pipe_config->pch_pfit.size,
11985 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
11986 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
11987 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
11989 if (IS_BROXTON(dev)) {
11990 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
11991 "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
11992 "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
11993 pipe_config->ddi_pll_sel,
11994 pipe_config->dpll_hw_state.ebb0,
11995 pipe_config->dpll_hw_state.ebb4,
11996 pipe_config->dpll_hw_state.pll0,
11997 pipe_config->dpll_hw_state.pll1,
11998 pipe_config->dpll_hw_state.pll2,
11999 pipe_config->dpll_hw_state.pll3,
12000 pipe_config->dpll_hw_state.pll6,
12001 pipe_config->dpll_hw_state.pll8,
12002 pipe_config->dpll_hw_state.pll9,
12003 pipe_config->dpll_hw_state.pll10,
12004 pipe_config->dpll_hw_state.pcsdw12);
12005 } else if (IS_SKYLAKE(dev)) {
12006 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: "
12007 "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
12008 pipe_config->ddi_pll_sel,
12009 pipe_config->dpll_hw_state.ctrl1,
12010 pipe_config->dpll_hw_state.cfgcr1,
12011 pipe_config->dpll_hw_state.cfgcr2);
12012 } else if (HAS_DDI(dev)) {
12013 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
12014 pipe_config->ddi_pll_sel,
12015 pipe_config->dpll_hw_state.wrpll,
12016 pipe_config->dpll_hw_state.spll);
12018 DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
12019 "fp0: 0x%x, fp1: 0x%x\n",
12020 pipe_config->dpll_hw_state.dpll,
12021 pipe_config->dpll_hw_state.dpll_md,
12022 pipe_config->dpll_hw_state.fp0,
12023 pipe_config->dpll_hw_state.fp1);
12026 DRM_DEBUG_KMS("planes on this crtc\n");
12027 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
12028 intel_plane = to_intel_plane(plane);
12029 if (intel_plane->pipe != crtc->pipe)
12032 state = to_intel_plane_state(plane->state);
12033 fb = state->base.fb;
12035 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d "
12036 "disabled, scaler_id = %d\n",
12037 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
12038 plane->base.id, intel_plane->pipe,
12039 (crtc->base.primary == plane) ? 0 : intel_plane->plane + 1,
12040 drm_plane_index(plane), state->scaler_id);
12044 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d enabled",
12045 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
12046 plane->base.id, intel_plane->pipe,
12047 crtc->base.primary == plane ? 0 : intel_plane->plane + 1,
12048 drm_plane_index(plane));
12049 DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = 0x%x",
12050 fb->base.id, fb->width, fb->height, fb->pixel_format);
12051 DRM_DEBUG_KMS("\tscaler:%d src (%u, %u) %ux%u dst (%u, %u) %ux%u\n",
12053 state->src.x1 >> 16, state->src.y1 >> 16,
12054 drm_rect_width(&state->src) >> 16,
12055 drm_rect_height(&state->src) >> 16,
12056 state->dst.x1, state->dst.y1,
12057 drm_rect_width(&state->dst), drm_rect_height(&state->dst));
12061 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
12063 struct drm_device *dev = state->dev;
12064 struct intel_encoder *encoder;
12065 struct drm_connector *connector;
12066 struct drm_connector_state *connector_state;
12067 unsigned int used_ports = 0;
12071 * Walk the connector list instead of the encoder
12072 * list to detect the problem on ddi platforms
12073 * where there's just one encoder per digital port.
12075 for_each_connector_in_state(state, connector, connector_state, i) {
12076 if (!connector_state->best_encoder)
12079 encoder = to_intel_encoder(connector_state->best_encoder);
12081 WARN_ON(!connector_state->crtc);
12083 switch (encoder->type) {
12084 unsigned int port_mask;
12085 case INTEL_OUTPUT_UNKNOWN:
12086 if (WARN_ON(!HAS_DDI(dev)))
12088 case INTEL_OUTPUT_DISPLAYPORT:
12089 case INTEL_OUTPUT_HDMI:
12090 case INTEL_OUTPUT_EDP:
12091 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
12093 /* the same port mustn't appear more than once */
12094 if (used_ports & port_mask)
12097 used_ports |= port_mask;
12107 clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
12109 struct drm_crtc_state tmp_state;
12110 struct intel_crtc_scaler_state scaler_state;
12111 struct intel_dpll_hw_state dpll_hw_state;
12112 enum intel_dpll_id shared_dpll;
12113 uint32_t ddi_pll_sel;
12116 /* FIXME: before the switch to atomic started, a new pipe_config was
12117 * kzalloc'd. Code that depends on any field being zero should be
12118 * fixed, so that the crtc_state can be safely duplicated. For now,
12119 * only fields that are know to not cause problems are preserved. */
12121 tmp_state = crtc_state->base;
12122 scaler_state = crtc_state->scaler_state;
12123 shared_dpll = crtc_state->shared_dpll;
12124 dpll_hw_state = crtc_state->dpll_hw_state;
12125 ddi_pll_sel = crtc_state->ddi_pll_sel;
12126 force_thru = crtc_state->pch_pfit.force_thru;
12128 memset(crtc_state, 0, sizeof *crtc_state);
12130 crtc_state->base = tmp_state;
12131 crtc_state->scaler_state = scaler_state;
12132 crtc_state->shared_dpll = shared_dpll;
12133 crtc_state->dpll_hw_state = dpll_hw_state;
12134 crtc_state->ddi_pll_sel = ddi_pll_sel;
12135 crtc_state->pch_pfit.force_thru = force_thru;
12139 intel_modeset_pipe_config(struct drm_crtc *crtc,
12140 struct intel_crtc_state *pipe_config)
12142 struct drm_atomic_state *state = pipe_config->base.state;
12143 struct intel_encoder *encoder;
12144 struct drm_connector *connector;
12145 struct drm_connector_state *connector_state;
12146 int base_bpp, ret = -EINVAL;
12150 clear_intel_crtc_state(pipe_config);
12152 pipe_config->cpu_transcoder =
12153 (enum transcoder) to_intel_crtc(crtc)->pipe;
12156 * Sanitize sync polarity flags based on requested ones. If neither
12157 * positive or negative polarity is requested, treat this as meaning
12158 * negative polarity.
12160 if (!(pipe_config->base.adjusted_mode.flags &
12161 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
12162 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
12164 if (!(pipe_config->base.adjusted_mode.flags &
12165 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
12166 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
12168 base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
12174 * Determine the real pipe dimensions. Note that stereo modes can
12175 * increase the actual pipe size due to the frame doubling and
12176 * insertion of additional space for blanks between the frame. This
12177 * is stored in the crtc timings. We use the requested mode to do this
12178 * computation to clearly distinguish it from the adjusted mode, which
12179 * can be changed by the connectors in the below retry loop.
12181 drm_crtc_get_hv_timing(&pipe_config->base.mode,
12182 &pipe_config->pipe_src_w,
12183 &pipe_config->pipe_src_h);
12186 /* Ensure the port clock defaults are reset when retrying. */
12187 pipe_config->port_clock = 0;
12188 pipe_config->pixel_multiplier = 1;
12190 /* Fill in default crtc timings, allow encoders to overwrite them. */
12191 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
12192 CRTC_STEREO_DOUBLE);
12194 /* Pass our mode to the connectors and the CRTC to give them a chance to
12195 * adjust it according to limitations or connector properties, and also
12196 * a chance to reject the mode entirely.
12198 for_each_connector_in_state(state, connector, connector_state, i) {
12199 if (connector_state->crtc != crtc)
12202 encoder = to_intel_encoder(connector_state->best_encoder);
12204 if (!(encoder->compute_config(encoder, pipe_config))) {
12205 DRM_DEBUG_KMS("Encoder config failure\n");
12210 /* Set default port clock if not overwritten by the encoder. Needs to be
12211 * done afterwards in case the encoder adjusts the mode. */
12212 if (!pipe_config->port_clock)
12213 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
12214 * pipe_config->pixel_multiplier;
12216 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
12218 DRM_DEBUG_KMS("CRTC fixup failed\n");
12222 if (ret == RETRY) {
12223 if (WARN(!retry, "loop in pipe configuration computation\n")) {
12228 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
12230 goto encoder_retry;
12233 /* Dithering seems to not pass-through bits correctly when it should, so
12234 * only enable it on 6bpc panels. */
12235 pipe_config->dither = pipe_config->pipe_bpp == 6*3;
12236 DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
12237 base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
12244 intel_modeset_update_crtc_state(struct drm_atomic_state *state)
12246 struct drm_crtc *crtc;
12247 struct drm_crtc_state *crtc_state;
12250 /* Double check state. */
12251 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12252 to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
12254 /* Update hwmode for vblank functions */
12255 if (crtc->state->active)
12256 crtc->hwmode = crtc->state->adjusted_mode;
12258 crtc->hwmode.crtc_clock = 0;
12262 static bool intel_fuzzy_clock_check(int clock1, int clock2)
12266 if (clock1 == clock2)
12269 if (!clock1 || !clock2)
12272 diff = abs(clock1 - clock2);
12274 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
12280 #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
12281 list_for_each_entry((intel_crtc), \
12282 &(dev)->mode_config.crtc_list, \
12284 if (mask & (1 <<(intel_crtc)->pipe))
12287 intel_compare_m_n(unsigned int m, unsigned int n,
12288 unsigned int m2, unsigned int n2,
12291 if (m == m2 && n == n2)
12294 if (exact || !m || !n || !m2 || !n2)
12297 BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
12304 } else if (m < m2) {
12311 return m == m2 && n == n2;
12315 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
12316 struct intel_link_m_n *m2_n2,
12319 if (m_n->tu == m2_n2->tu &&
12320 intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
12321 m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
12322 intel_compare_m_n(m_n->link_m, m_n->link_n,
12323 m2_n2->link_m, m2_n2->link_n, !adjust)) {
12334 intel_pipe_config_compare(struct drm_device *dev,
12335 struct intel_crtc_state *current_config,
12336 struct intel_crtc_state *pipe_config,
12341 #define INTEL_ERR_OR_DBG_KMS(fmt, ...) \
12344 DRM_ERROR(fmt, ##__VA_ARGS__); \
12346 DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \
12349 #define PIPE_CONF_CHECK_X(name) \
12350 if (current_config->name != pipe_config->name) { \
12351 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12352 "(expected 0x%08x, found 0x%08x)\n", \
12353 current_config->name, \
12354 pipe_config->name); \
12358 #define PIPE_CONF_CHECK_I(name) \
12359 if (current_config->name != pipe_config->name) { \
12360 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12361 "(expected %i, found %i)\n", \
12362 current_config->name, \
12363 pipe_config->name); \
12367 #define PIPE_CONF_CHECK_M_N(name) \
12368 if (!intel_compare_link_m_n(¤t_config->name, \
12369 &pipe_config->name,\
12371 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12372 "(expected tu %i gmch %i/%i link %i/%i, " \
12373 "found tu %i, gmch %i/%i link %i/%i)\n", \
12374 current_config->name.tu, \
12375 current_config->name.gmch_m, \
12376 current_config->name.gmch_n, \
12377 current_config->name.link_m, \
12378 current_config->name.link_n, \
12379 pipe_config->name.tu, \
12380 pipe_config->name.gmch_m, \
12381 pipe_config->name.gmch_n, \
12382 pipe_config->name.link_m, \
12383 pipe_config->name.link_n); \
12387 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \
12388 if (!intel_compare_link_m_n(¤t_config->name, \
12389 &pipe_config->name, adjust) && \
12390 !intel_compare_link_m_n(¤t_config->alt_name, \
12391 &pipe_config->name, adjust)) { \
12392 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12393 "(expected tu %i gmch %i/%i link %i/%i, " \
12394 "or tu %i gmch %i/%i link %i/%i, " \
12395 "found tu %i, gmch %i/%i link %i/%i)\n", \
12396 current_config->name.tu, \
12397 current_config->name.gmch_m, \
12398 current_config->name.gmch_n, \
12399 current_config->name.link_m, \
12400 current_config->name.link_n, \
12401 current_config->alt_name.tu, \
12402 current_config->alt_name.gmch_m, \
12403 current_config->alt_name.gmch_n, \
12404 current_config->alt_name.link_m, \
12405 current_config->alt_name.link_n, \
12406 pipe_config->name.tu, \
12407 pipe_config->name.gmch_m, \
12408 pipe_config->name.gmch_n, \
12409 pipe_config->name.link_m, \
12410 pipe_config->name.link_n); \
12414 /* This is required for BDW+ where there is only one set of registers for
12415 * switching between high and low RR.
12416 * This macro can be used whenever a comparison has to be made between one
12417 * hw state and multiple sw state variables.
12419 #define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
12420 if ((current_config->name != pipe_config->name) && \
12421 (current_config->alt_name != pipe_config->name)) { \
12422 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12423 "(expected %i or %i, found %i)\n", \
12424 current_config->name, \
12425 current_config->alt_name, \
12426 pipe_config->name); \
12430 #define PIPE_CONF_CHECK_FLAGS(name, mask) \
12431 if ((current_config->name ^ pipe_config->name) & (mask)) { \
12432 INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \
12433 "(expected %i, found %i)\n", \
12434 current_config->name & (mask), \
12435 pipe_config->name & (mask)); \
12439 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
12440 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
12441 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12442 "(expected %i, found %i)\n", \
12443 current_config->name, \
12444 pipe_config->name); \
12448 #define PIPE_CONF_QUIRK(quirk) \
12449 ((current_config->quirks | pipe_config->quirks) & (quirk))
12451 PIPE_CONF_CHECK_I(cpu_transcoder);
12453 PIPE_CONF_CHECK_I(has_pch_encoder);
12454 PIPE_CONF_CHECK_I(fdi_lanes);
12455 PIPE_CONF_CHECK_M_N(fdi_m_n);
12457 PIPE_CONF_CHECK_I(has_dp_encoder);
12458 PIPE_CONF_CHECK_I(lane_count);
12460 if (INTEL_INFO(dev)->gen < 8) {
12461 PIPE_CONF_CHECK_M_N(dp_m_n);
12463 PIPE_CONF_CHECK_I(has_drrs);
12464 if (current_config->has_drrs)
12465 PIPE_CONF_CHECK_M_N(dp_m2_n2);
12467 PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
12469 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
12470 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
12471 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
12472 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
12473 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
12474 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
12476 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
12477 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
12478 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
12479 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
12480 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
12481 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
12483 PIPE_CONF_CHECK_I(pixel_multiplier);
12484 PIPE_CONF_CHECK_I(has_hdmi_sink);
12485 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
12486 IS_VALLEYVIEW(dev))
12487 PIPE_CONF_CHECK_I(limited_color_range);
12488 PIPE_CONF_CHECK_I(has_infoframe);
12490 PIPE_CONF_CHECK_I(has_audio);
12492 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12493 DRM_MODE_FLAG_INTERLACE);
12495 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
12496 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12497 DRM_MODE_FLAG_PHSYNC);
12498 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12499 DRM_MODE_FLAG_NHSYNC);
12500 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12501 DRM_MODE_FLAG_PVSYNC);
12502 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12503 DRM_MODE_FLAG_NVSYNC);
12506 PIPE_CONF_CHECK_X(gmch_pfit.control);
12507 /* pfit ratios are autocomputed by the hw on gen4+ */
12508 if (INTEL_INFO(dev)->gen < 4)
12509 PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
12510 PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
12513 PIPE_CONF_CHECK_I(pipe_src_w);
12514 PIPE_CONF_CHECK_I(pipe_src_h);
12516 PIPE_CONF_CHECK_I(pch_pfit.enabled);
12517 if (current_config->pch_pfit.enabled) {
12518 PIPE_CONF_CHECK_X(pch_pfit.pos);
12519 PIPE_CONF_CHECK_X(pch_pfit.size);
12522 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
12525 /* BDW+ don't expose a synchronous way to read the state */
12526 if (IS_HASWELL(dev))
12527 PIPE_CONF_CHECK_I(ips_enabled);
12529 PIPE_CONF_CHECK_I(double_wide);
12531 PIPE_CONF_CHECK_X(ddi_pll_sel);
12533 PIPE_CONF_CHECK_I(shared_dpll);
12534 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
12535 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
12536 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
12537 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
12538 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
12539 PIPE_CONF_CHECK_X(dpll_hw_state.spll);
12540 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
12541 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
12542 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
12544 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
12545 PIPE_CONF_CHECK_I(pipe_bpp);
12547 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
12548 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
12550 #undef PIPE_CONF_CHECK_X
12551 #undef PIPE_CONF_CHECK_I
12552 #undef PIPE_CONF_CHECK_I_ALT
12553 #undef PIPE_CONF_CHECK_FLAGS
12554 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
12555 #undef PIPE_CONF_QUIRK
12556 #undef INTEL_ERR_OR_DBG_KMS
12561 static void check_wm_state(struct drm_device *dev)
12563 struct drm_i915_private *dev_priv = dev->dev_private;
12564 struct skl_ddb_allocation hw_ddb, *sw_ddb;
12565 struct intel_crtc *intel_crtc;
12568 if (INTEL_INFO(dev)->gen < 9)
12571 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
12572 sw_ddb = &dev_priv->wm.skl_hw.ddb;
12574 for_each_intel_crtc(dev, intel_crtc) {
12575 struct skl_ddb_entry *hw_entry, *sw_entry;
12576 const enum pipe pipe = intel_crtc->pipe;
12578 if (!intel_crtc->active)
12582 for_each_plane(dev_priv, pipe, plane) {
12583 hw_entry = &hw_ddb.plane[pipe][plane];
12584 sw_entry = &sw_ddb->plane[pipe][plane];
12586 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12589 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
12590 "(expected (%u,%u), found (%u,%u))\n",
12591 pipe_name(pipe), plane + 1,
12592 sw_entry->start, sw_entry->end,
12593 hw_entry->start, hw_entry->end);
12597 hw_entry = &hw_ddb.plane[pipe][PLANE_CURSOR];
12598 sw_entry = &sw_ddb->plane[pipe][PLANE_CURSOR];
12600 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12603 DRM_ERROR("mismatch in DDB state pipe %c cursor "
12604 "(expected (%u,%u), found (%u,%u))\n",
12606 sw_entry->start, sw_entry->end,
12607 hw_entry->start, hw_entry->end);
12612 check_connector_state(struct drm_device *dev,
12613 struct drm_atomic_state *old_state)
12615 struct drm_connector_state *old_conn_state;
12616 struct drm_connector *connector;
12619 for_each_connector_in_state(old_state, connector, old_conn_state, i) {
12620 struct drm_encoder *encoder = connector->encoder;
12621 struct drm_connector_state *state = connector->state;
12623 /* This also checks the encoder/connector hw state with the
12624 * ->get_hw_state callbacks. */
12625 intel_connector_check_state(to_intel_connector(connector));
12627 I915_STATE_WARN(state->best_encoder != encoder,
12628 "connector's atomic encoder doesn't match legacy encoder\n");
12633 check_encoder_state(struct drm_device *dev)
12635 struct intel_encoder *encoder;
12636 struct intel_connector *connector;
12638 for_each_intel_encoder(dev, encoder) {
12639 bool enabled = false;
12642 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
12643 encoder->base.base.id,
12644 encoder->base.name);
12646 for_each_intel_connector(dev, connector) {
12647 if (connector->base.state->best_encoder != &encoder->base)
12651 I915_STATE_WARN(connector->base.state->crtc !=
12652 encoder->base.crtc,
12653 "connector's crtc doesn't match encoder crtc\n");
12656 I915_STATE_WARN(!!encoder->base.crtc != enabled,
12657 "encoder's enabled state mismatch "
12658 "(expected %i, found %i)\n",
12659 !!encoder->base.crtc, enabled);
12661 if (!encoder->base.crtc) {
12664 active = encoder->get_hw_state(encoder, &pipe);
12665 I915_STATE_WARN(active,
12666 "encoder detached but still enabled on pipe %c.\n",
12673 check_crtc_state(struct drm_device *dev, struct drm_atomic_state *old_state)
12675 struct drm_i915_private *dev_priv = dev->dev_private;
12676 struct intel_encoder *encoder;
12677 struct drm_crtc_state *old_crtc_state;
12678 struct drm_crtc *crtc;
12681 for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
12682 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12683 struct intel_crtc_state *pipe_config, *sw_config;
12686 if (!needs_modeset(crtc->state) &&
12687 !to_intel_crtc_state(crtc->state)->update_pipe)
12690 __drm_atomic_helper_crtc_destroy_state(crtc, old_crtc_state);
12691 pipe_config = to_intel_crtc_state(old_crtc_state);
12692 memset(pipe_config, 0, sizeof(*pipe_config));
12693 pipe_config->base.crtc = crtc;
12694 pipe_config->base.state = old_state;
12696 DRM_DEBUG_KMS("[CRTC:%d]\n",
12699 active = dev_priv->display.get_pipe_config(intel_crtc,
12702 /* hw state is inconsistent with the pipe quirk */
12703 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
12704 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
12705 active = crtc->state->active;
12707 I915_STATE_WARN(crtc->state->active != active,
12708 "crtc active state doesn't match with hw state "
12709 "(expected %i, found %i)\n", crtc->state->active, active);
12711 I915_STATE_WARN(intel_crtc->active != crtc->state->active,
12712 "transitional active state does not match atomic hw state "
12713 "(expected %i, found %i)\n", crtc->state->active, intel_crtc->active);
12715 for_each_encoder_on_crtc(dev, crtc, encoder) {
12718 active = encoder->get_hw_state(encoder, &pipe);
12719 I915_STATE_WARN(active != crtc->state->active,
12720 "[ENCODER:%i] active %i with crtc active %i\n",
12721 encoder->base.base.id, active, crtc->state->active);
12723 I915_STATE_WARN(active && intel_crtc->pipe != pipe,
12724 "Encoder connected to wrong pipe %c\n",
12728 encoder->get_config(encoder, pipe_config);
12731 if (!crtc->state->active)
12734 sw_config = to_intel_crtc_state(crtc->state);
12735 if (!intel_pipe_config_compare(dev, sw_config,
12736 pipe_config, false)) {
12737 I915_STATE_WARN(1, "pipe state doesn't match!\n");
12738 intel_dump_pipe_config(intel_crtc, pipe_config,
12740 intel_dump_pipe_config(intel_crtc, sw_config,
12747 check_shared_dpll_state(struct drm_device *dev)
12749 struct drm_i915_private *dev_priv = dev->dev_private;
12750 struct intel_crtc *crtc;
12751 struct intel_dpll_hw_state dpll_hw_state;
12754 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
12755 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
12756 int enabled_crtcs = 0, active_crtcs = 0;
12759 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
12761 DRM_DEBUG_KMS("%s\n", pll->name);
12763 active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
12765 I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
12766 "more active pll users than references: %i vs %i\n",
12767 pll->active, hweight32(pll->config.crtc_mask));
12768 I915_STATE_WARN(pll->active && !pll->on,
12769 "pll in active use but not on in sw tracking\n");
12770 I915_STATE_WARN(pll->on && !pll->active,
12771 "pll in on but not on in use in sw tracking\n");
12772 I915_STATE_WARN(pll->on != active,
12773 "pll on state mismatch (expected %i, found %i)\n",
12776 for_each_intel_crtc(dev, crtc) {
12777 if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
12779 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
12782 I915_STATE_WARN(pll->active != active_crtcs,
12783 "pll active crtcs mismatch (expected %i, found %i)\n",
12784 pll->active, active_crtcs);
12785 I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
12786 "pll enabled crtcs mismatch (expected %i, found %i)\n",
12787 hweight32(pll->config.crtc_mask), enabled_crtcs);
12789 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
12790 sizeof(dpll_hw_state)),
12791 "pll hw state mismatch\n");
12796 intel_modeset_check_state(struct drm_device *dev,
12797 struct drm_atomic_state *old_state)
12799 check_wm_state(dev);
12800 check_connector_state(dev, old_state);
12801 check_encoder_state(dev);
12802 check_crtc_state(dev, old_state);
12803 check_shared_dpll_state(dev);
12806 void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
12810 * FDI already provided one idea for the dotclock.
12811 * Yell if the encoder disagrees.
12813 WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
12814 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
12815 pipe_config->base.adjusted_mode.crtc_clock, dotclock);
12818 static void update_scanline_offset(struct intel_crtc *crtc)
12820 struct drm_device *dev = crtc->base.dev;
12823 * The scanline counter increments at the leading edge of hsync.
12825 * On most platforms it starts counting from vtotal-1 on the
12826 * first active line. That means the scanline counter value is
12827 * always one less than what we would expect. Ie. just after
12828 * start of vblank, which also occurs at start of hsync (on the
12829 * last active line), the scanline counter will read vblank_start-1.
12831 * On gen2 the scanline counter starts counting from 1 instead
12832 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
12833 * to keep the value positive), instead of adding one.
12835 * On HSW+ the behaviour of the scanline counter depends on the output
12836 * type. For DP ports it behaves like most other platforms, but on HDMI
12837 * there's an extra 1 line difference. So we need to add two instead of
12838 * one to the value.
12840 if (IS_GEN2(dev)) {
12841 const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
12844 vtotal = adjusted_mode->crtc_vtotal;
12845 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
12848 crtc->scanline_offset = vtotal - 1;
12849 } else if (HAS_DDI(dev) &&
12850 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
12851 crtc->scanline_offset = 2;
12853 crtc->scanline_offset = 1;
12856 static void intel_modeset_clear_plls(struct drm_atomic_state *state)
12858 struct drm_device *dev = state->dev;
12859 struct drm_i915_private *dev_priv = to_i915(dev);
12860 struct intel_shared_dpll_config *shared_dpll = NULL;
12861 struct intel_crtc *intel_crtc;
12862 struct intel_crtc_state *intel_crtc_state;
12863 struct drm_crtc *crtc;
12864 struct drm_crtc_state *crtc_state;
12867 if (!dev_priv->display.crtc_compute_clock)
12870 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12873 intel_crtc = to_intel_crtc(crtc);
12874 intel_crtc_state = to_intel_crtc_state(crtc_state);
12875 dpll = intel_crtc_state->shared_dpll;
12877 if (!needs_modeset(crtc_state) || dpll == DPLL_ID_PRIVATE)
12880 intel_crtc_state->shared_dpll = DPLL_ID_PRIVATE;
12883 shared_dpll = intel_atomic_get_shared_dpll_state(state);
12885 shared_dpll[dpll].crtc_mask &= ~(1 << intel_crtc->pipe);
12890 * This implements the workaround described in the "notes" section of the mode
12891 * set sequence documentation. When going from no pipes or single pipe to
12892 * multiple pipes, and planes are enabled after the pipe, we need to wait at
12893 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
12895 static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
12897 struct drm_crtc_state *crtc_state;
12898 struct intel_crtc *intel_crtc;
12899 struct drm_crtc *crtc;
12900 struct intel_crtc_state *first_crtc_state = NULL;
12901 struct intel_crtc_state *other_crtc_state = NULL;
12902 enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
12905 /* look at all crtc's that are going to be enabled in during modeset */
12906 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12907 intel_crtc = to_intel_crtc(crtc);
12909 if (!crtc_state->active || !needs_modeset(crtc_state))
12912 if (first_crtc_state) {
12913 other_crtc_state = to_intel_crtc_state(crtc_state);
12916 first_crtc_state = to_intel_crtc_state(crtc_state);
12917 first_pipe = intel_crtc->pipe;
12921 /* No workaround needed? */
12922 if (!first_crtc_state)
12925 /* w/a possibly needed, check how many crtc's are already enabled. */
12926 for_each_intel_crtc(state->dev, intel_crtc) {
12927 struct intel_crtc_state *pipe_config;
12929 pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
12930 if (IS_ERR(pipe_config))
12931 return PTR_ERR(pipe_config);
12933 pipe_config->hsw_workaround_pipe = INVALID_PIPE;
12935 if (!pipe_config->base.active ||
12936 needs_modeset(&pipe_config->base))
12939 /* 2 or more enabled crtcs means no need for w/a */
12940 if (enabled_pipe != INVALID_PIPE)
12943 enabled_pipe = intel_crtc->pipe;
12946 if (enabled_pipe != INVALID_PIPE)
12947 first_crtc_state->hsw_workaround_pipe = enabled_pipe;
12948 else if (other_crtc_state)
12949 other_crtc_state->hsw_workaround_pipe = first_pipe;
12954 static int intel_modeset_all_pipes(struct drm_atomic_state *state)
12956 struct drm_crtc *crtc;
12957 struct drm_crtc_state *crtc_state;
12960 /* add all active pipes to the state */
12961 for_each_crtc(state->dev, crtc) {
12962 crtc_state = drm_atomic_get_crtc_state(state, crtc);
12963 if (IS_ERR(crtc_state))
12964 return PTR_ERR(crtc_state);
12966 if (!crtc_state->active || needs_modeset(crtc_state))
12969 crtc_state->mode_changed = true;
12971 ret = drm_atomic_add_affected_connectors(state, crtc);
12975 ret = drm_atomic_add_affected_planes(state, crtc);
12983 static int intel_modeset_checks(struct drm_atomic_state *state)
12985 struct drm_device *dev = state->dev;
12986 struct drm_i915_private *dev_priv = dev->dev_private;
12989 if (!check_digital_port_conflicts(state)) {
12990 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
12995 * See if the config requires any additional preparation, e.g.
12996 * to adjust global state with pipes off. We need to do this
12997 * here so we can get the modeset_pipe updated config for the new
12998 * mode set on this crtc. For other crtcs we need to use the
12999 * adjusted_mode bits in the crtc directly.
13001 if (dev_priv->display.modeset_calc_cdclk) {
13002 unsigned int cdclk;
13004 ret = dev_priv->display.modeset_calc_cdclk(state);
13006 cdclk = to_intel_atomic_state(state)->cdclk;
13007 if (!ret && cdclk != dev_priv->cdclk_freq)
13008 ret = intel_modeset_all_pipes(state);
13013 to_intel_atomic_state(state)->cdclk = dev_priv->cdclk_freq;
13015 intel_modeset_clear_plls(state);
13017 if (IS_HASWELL(dev))
13018 return haswell_mode_set_planes_workaround(state);
13024 * intel_atomic_check - validate state object
13026 * @state: state to validate
13028 static int intel_atomic_check(struct drm_device *dev,
13029 struct drm_atomic_state *state)
13031 struct drm_crtc *crtc;
13032 struct drm_crtc_state *crtc_state;
13034 bool any_ms = false;
13036 ret = drm_atomic_helper_check_modeset(dev, state);
13040 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13041 struct intel_crtc_state *pipe_config =
13042 to_intel_crtc_state(crtc_state);
13044 memset(&to_intel_crtc(crtc)->atomic, 0,
13045 sizeof(struct intel_crtc_atomic_commit));
13047 /* Catch I915_MODE_FLAG_INHERITED */
13048 if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
13049 crtc_state->mode_changed = true;
13051 if (!crtc_state->enable) {
13052 if (needs_modeset(crtc_state))
13057 if (!needs_modeset(crtc_state))
13060 /* FIXME: For only active_changed we shouldn't need to do any
13061 * state recomputation at all. */
13063 ret = drm_atomic_add_affected_connectors(state, crtc);
13067 ret = intel_modeset_pipe_config(crtc, pipe_config);
13071 if (i915.fastboot &&
13072 intel_pipe_config_compare(state->dev,
13073 to_intel_crtc_state(crtc->state),
13074 pipe_config, true)) {
13075 crtc_state->mode_changed = false;
13076 to_intel_crtc_state(crtc_state)->update_pipe = true;
13079 if (needs_modeset(crtc_state)) {
13082 ret = drm_atomic_add_affected_planes(state, crtc);
13087 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
13088 needs_modeset(crtc_state) ?
13089 "[modeset]" : "[fastset]");
13093 ret = intel_modeset_checks(state);
13098 to_intel_atomic_state(state)->cdclk =
13099 to_i915(state->dev)->cdclk_freq;
13101 return drm_atomic_helper_check_planes(state->dev, state);
13105 * intel_atomic_commit - commit validated state object
13107 * @state: the top-level driver state object
13108 * @async: asynchronous commit
13110 * This function commits a top-level state object that has been validated
13111 * with drm_atomic_helper_check().
13113 * FIXME: Atomic modeset support for i915 is not yet complete. At the moment
13114 * we can only handle plane-related operations and do not yet support
13115 * asynchronous commit.
13118 * Zero for success or -errno.
13120 static int intel_atomic_commit(struct drm_device *dev,
13121 struct drm_atomic_state *state,
13124 struct drm_i915_private *dev_priv = dev->dev_private;
13125 struct drm_crtc *crtc;
13126 struct drm_crtc_state *crtc_state;
13129 bool any_ms = false;
13132 DRM_DEBUG_KMS("i915 does not yet support async commit\n");
13136 ret = drm_atomic_helper_prepare_planes(dev, state);
13140 drm_atomic_helper_swap_state(dev, state);
13142 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13143 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13145 if (!needs_modeset(crtc->state))
13149 intel_pre_plane_update(intel_crtc);
13151 if (crtc_state->active) {
13152 intel_crtc_disable_planes(crtc, crtc_state->plane_mask);
13153 dev_priv->display.crtc_disable(crtc);
13154 intel_crtc->active = false;
13155 intel_disable_shared_dpll(intel_crtc);
13159 /* Only after disabling all output pipelines that will be changed can we
13160 * update the the output configuration. */
13161 intel_modeset_update_crtc_state(state);
13164 intel_shared_dpll_commit(state);
13166 drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
13167 modeset_update_crtc_power_domains(state);
13170 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
13171 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13172 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13173 bool modeset = needs_modeset(crtc->state);
13174 bool update_pipe = !modeset &&
13175 to_intel_crtc_state(crtc->state)->update_pipe;
13176 unsigned long put_domains = 0;
13178 if (modeset && crtc->state->active) {
13179 update_scanline_offset(to_intel_crtc(crtc));
13180 dev_priv->display.crtc_enable(crtc);
13184 put_domains = modeset_get_crtc_power_domains(crtc);
13186 /* make sure intel_modeset_check_state runs */
13191 intel_pre_plane_update(intel_crtc);
13193 drm_atomic_helper_commit_planes_on_crtc(crtc_state);
13196 modeset_put_power_domains(dev_priv, put_domains);
13198 intel_post_plane_update(intel_crtc);
13201 /* FIXME: add subpixel order */
13203 drm_atomic_helper_wait_for_vblanks(dev, state);
13204 drm_atomic_helper_cleanup_planes(dev, state);
13207 intel_modeset_check_state(dev, state);
13209 drm_atomic_state_free(state);
13214 void intel_crtc_restore_mode(struct drm_crtc *crtc)
13216 struct drm_device *dev = crtc->dev;
13217 struct drm_atomic_state *state;
13218 struct drm_crtc_state *crtc_state;
13221 state = drm_atomic_state_alloc(dev);
13223 DRM_DEBUG_KMS("[CRTC:%d] crtc restore failed, out of memory",
13228 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
13231 crtc_state = drm_atomic_get_crtc_state(state, crtc);
13232 ret = PTR_ERR_OR_ZERO(crtc_state);
13234 if (!crtc_state->active)
13237 crtc_state->mode_changed = true;
13238 ret = drm_atomic_commit(state);
13241 if (ret == -EDEADLK) {
13242 drm_atomic_state_clear(state);
13243 drm_modeset_backoff(state->acquire_ctx);
13249 drm_atomic_state_free(state);
13252 #undef for_each_intel_crtc_masked
13254 static const struct drm_crtc_funcs intel_crtc_funcs = {
13255 .gamma_set = intel_crtc_gamma_set,
13256 .set_config = drm_atomic_helper_set_config,
13257 .destroy = intel_crtc_destroy,
13258 .page_flip = intel_crtc_page_flip,
13259 .atomic_duplicate_state = intel_crtc_duplicate_state,
13260 .atomic_destroy_state = intel_crtc_destroy_state,
13263 static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
13264 struct intel_shared_dpll *pll,
13265 struct intel_dpll_hw_state *hw_state)
13269 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
13272 val = I915_READ(PCH_DPLL(pll->id));
13273 hw_state->dpll = val;
13274 hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
13275 hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
13277 return val & DPLL_VCO_ENABLE;
13280 static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
13281 struct intel_shared_dpll *pll)
13283 I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
13284 I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
13287 static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
13288 struct intel_shared_dpll *pll)
13290 /* PCH refclock must be enabled first */
13291 ibx_assert_pch_refclk_enabled(dev_priv);
13293 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13295 /* Wait for the clocks to stabilize. */
13296 POSTING_READ(PCH_DPLL(pll->id));
13299 /* The pixel multiplier can only be updated once the
13300 * DPLL is enabled and the clocks are stable.
13302 * So write it again.
13304 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13305 POSTING_READ(PCH_DPLL(pll->id));
13309 static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
13310 struct intel_shared_dpll *pll)
13312 struct drm_device *dev = dev_priv->dev;
13313 struct intel_crtc *crtc;
13315 /* Make sure no transcoder isn't still depending on us. */
13316 for_each_intel_crtc(dev, crtc) {
13317 if (intel_crtc_to_shared_dpll(crtc) == pll)
13318 assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
13321 I915_WRITE(PCH_DPLL(pll->id), 0);
13322 POSTING_READ(PCH_DPLL(pll->id));
13326 static char *ibx_pch_dpll_names[] = {
13331 static void ibx_pch_dpll_init(struct drm_device *dev)
13333 struct drm_i915_private *dev_priv = dev->dev_private;
13336 dev_priv->num_shared_dpll = 2;
13338 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
13339 dev_priv->shared_dplls[i].id = i;
13340 dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
13341 dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
13342 dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
13343 dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
13344 dev_priv->shared_dplls[i].get_hw_state =
13345 ibx_pch_dpll_get_hw_state;
13349 static void intel_shared_dpll_init(struct drm_device *dev)
13351 struct drm_i915_private *dev_priv = dev->dev_private;
13354 intel_ddi_pll_init(dev);
13355 else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
13356 ibx_pch_dpll_init(dev);
13358 dev_priv->num_shared_dpll = 0;
13360 BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
13364 * intel_prepare_plane_fb - Prepare fb for usage on plane
13365 * @plane: drm plane to prepare for
13366 * @fb: framebuffer to prepare for presentation
13368 * Prepares a framebuffer for usage on a display plane. Generally this
13369 * involves pinning the underlying object and updating the frontbuffer tracking
13370 * bits. Some older platforms need special physical address handling for
13373 * Returns 0 on success, negative error code on failure.
13376 intel_prepare_plane_fb(struct drm_plane *plane,
13377 const struct drm_plane_state *new_state)
13379 struct drm_device *dev = plane->dev;
13380 struct drm_framebuffer *fb = new_state->fb;
13381 struct intel_plane *intel_plane = to_intel_plane(plane);
13382 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13383 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
13389 mutex_lock(&dev->struct_mutex);
13391 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
13392 INTEL_INFO(dev)->cursor_needs_physical) {
13393 int align = IS_I830(dev) ? 16 * 1024 : 256;
13394 ret = i915_gem_object_attach_phys(obj, align);
13396 DRM_DEBUG_KMS("failed to attach phys object\n");
13398 ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL, NULL);
13402 i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
13404 mutex_unlock(&dev->struct_mutex);
13410 * intel_cleanup_plane_fb - Cleans up an fb after plane use
13411 * @plane: drm plane to clean up for
13412 * @fb: old framebuffer that was on plane
13414 * Cleans up a framebuffer that has just been removed from a plane.
13417 intel_cleanup_plane_fb(struct drm_plane *plane,
13418 const struct drm_plane_state *old_state)
13420 struct drm_device *dev = plane->dev;
13421 struct drm_i915_gem_object *obj = intel_fb_obj(old_state->fb);
13426 if (plane->type != DRM_PLANE_TYPE_CURSOR ||
13427 !INTEL_INFO(dev)->cursor_needs_physical) {
13428 mutex_lock(&dev->struct_mutex);
13429 intel_unpin_fb_obj(old_state->fb, old_state);
13430 mutex_unlock(&dev->struct_mutex);
13435 skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
13438 struct drm_device *dev;
13439 struct drm_i915_private *dev_priv;
13440 int crtc_clock, cdclk;
13442 if (!intel_crtc || !crtc_state)
13443 return DRM_PLANE_HELPER_NO_SCALING;
13445 dev = intel_crtc->base.dev;
13446 dev_priv = dev->dev_private;
13447 crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
13448 cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk;
13450 if (!crtc_clock || !cdclk)
13451 return DRM_PLANE_HELPER_NO_SCALING;
13454 * skl max scale is lower of:
13455 * close to 3 but not 3, -1 is for that purpose
13459 max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
13465 intel_check_primary_plane(struct drm_plane *plane,
13466 struct intel_crtc_state *crtc_state,
13467 struct intel_plane_state *state)
13469 struct drm_crtc *crtc = state->base.crtc;
13470 struct drm_framebuffer *fb = state->base.fb;
13471 int min_scale = DRM_PLANE_HELPER_NO_SCALING;
13472 int max_scale = DRM_PLANE_HELPER_NO_SCALING;
13473 bool can_position = false;
13475 /* use scaler when colorkey is not required */
13476 if (INTEL_INFO(plane->dev)->gen >= 9 &&
13477 state->ckey.flags == I915_SET_COLORKEY_NONE) {
13479 max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
13480 can_position = true;
13483 return drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13484 &state->dst, &state->clip,
13485 min_scale, max_scale,
13486 can_position, true,
13491 intel_commit_primary_plane(struct drm_plane *plane,
13492 struct intel_plane_state *state)
13494 struct drm_crtc *crtc = state->base.crtc;
13495 struct drm_framebuffer *fb = state->base.fb;
13496 struct drm_device *dev = plane->dev;
13497 struct drm_i915_private *dev_priv = dev->dev_private;
13498 struct intel_crtc *intel_crtc;
13499 struct drm_rect *src = &state->src;
13501 crtc = crtc ? crtc : plane->crtc;
13502 intel_crtc = to_intel_crtc(crtc);
13505 crtc->x = src->x1 >> 16;
13506 crtc->y = src->y1 >> 16;
13508 if (!crtc->state->active)
13511 dev_priv->display.update_primary_plane(crtc, fb,
13512 state->src.x1 >> 16,
13513 state->src.y1 >> 16);
13517 intel_disable_primary_plane(struct drm_plane *plane,
13518 struct drm_crtc *crtc)
13520 struct drm_device *dev = plane->dev;
13521 struct drm_i915_private *dev_priv = dev->dev_private;
13523 dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
13526 static void intel_begin_crtc_commit(struct drm_crtc *crtc,
13527 struct drm_crtc_state *old_crtc_state)
13529 struct drm_device *dev = crtc->dev;
13530 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13531 struct intel_crtc_state *old_intel_state =
13532 to_intel_crtc_state(old_crtc_state);
13533 bool modeset = needs_modeset(crtc->state);
13535 if (intel_crtc->atomic.update_wm_pre)
13536 intel_update_watermarks(crtc);
13538 /* Perform vblank evasion around commit operation */
13539 if (crtc->state->active)
13540 intel_pipe_update_start(intel_crtc);
13545 if (to_intel_crtc_state(crtc->state)->update_pipe)
13546 intel_update_pipe_config(intel_crtc, old_intel_state);
13547 else if (INTEL_INFO(dev)->gen >= 9)
13548 skl_detach_scalers(intel_crtc);
13551 static void intel_finish_crtc_commit(struct drm_crtc *crtc,
13552 struct drm_crtc_state *old_crtc_state)
13554 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13556 if (crtc->state->active)
13557 intel_pipe_update_end(intel_crtc);
13561 * intel_plane_destroy - destroy a plane
13562 * @plane: plane to destroy
13564 * Common destruction function for all types of planes (primary, cursor,
13567 void intel_plane_destroy(struct drm_plane *plane)
13569 struct intel_plane *intel_plane = to_intel_plane(plane);
13570 drm_plane_cleanup(plane);
13571 kfree(intel_plane);
13574 const struct drm_plane_funcs intel_plane_funcs = {
13575 .update_plane = drm_atomic_helper_update_plane,
13576 .disable_plane = drm_atomic_helper_disable_plane,
13577 .destroy = intel_plane_destroy,
13578 .set_property = drm_atomic_helper_plane_set_property,
13579 .atomic_get_property = intel_plane_atomic_get_property,
13580 .atomic_set_property = intel_plane_atomic_set_property,
13581 .atomic_duplicate_state = intel_plane_duplicate_state,
13582 .atomic_destroy_state = intel_plane_destroy_state,
13586 static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
13589 struct intel_plane *primary;
13590 struct intel_plane_state *state;
13591 const uint32_t *intel_primary_formats;
13592 unsigned int num_formats;
13594 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
13595 if (primary == NULL)
13598 state = intel_create_plane_state(&primary->base);
13603 primary->base.state = &state->base;
13605 primary->can_scale = false;
13606 primary->max_downscale = 1;
13607 if (INTEL_INFO(dev)->gen >= 9) {
13608 primary->can_scale = true;
13609 state->scaler_id = -1;
13611 primary->pipe = pipe;
13612 primary->plane = pipe;
13613 primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
13614 primary->check_plane = intel_check_primary_plane;
13615 primary->commit_plane = intel_commit_primary_plane;
13616 primary->disable_plane = intel_disable_primary_plane;
13617 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
13618 primary->plane = !pipe;
13620 if (INTEL_INFO(dev)->gen >= 9) {
13621 intel_primary_formats = skl_primary_formats;
13622 num_formats = ARRAY_SIZE(skl_primary_formats);
13623 } else if (INTEL_INFO(dev)->gen >= 4) {
13624 intel_primary_formats = i965_primary_formats;
13625 num_formats = ARRAY_SIZE(i965_primary_formats);
13627 intel_primary_formats = i8xx_primary_formats;
13628 num_formats = ARRAY_SIZE(i8xx_primary_formats);
13631 drm_universal_plane_init(dev, &primary->base, 0,
13632 &intel_plane_funcs,
13633 intel_primary_formats, num_formats,
13634 DRM_PLANE_TYPE_PRIMARY);
13636 if (INTEL_INFO(dev)->gen >= 4)
13637 intel_create_rotation_property(dev, primary);
13639 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
13641 return &primary->base;
13644 void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
13646 if (!dev->mode_config.rotation_property) {
13647 unsigned long flags = BIT(DRM_ROTATE_0) |
13648 BIT(DRM_ROTATE_180);
13650 if (INTEL_INFO(dev)->gen >= 9)
13651 flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
13653 dev->mode_config.rotation_property =
13654 drm_mode_create_rotation_property(dev, flags);
13656 if (dev->mode_config.rotation_property)
13657 drm_object_attach_property(&plane->base.base,
13658 dev->mode_config.rotation_property,
13659 plane->base.state->rotation);
13663 intel_check_cursor_plane(struct drm_plane *plane,
13664 struct intel_crtc_state *crtc_state,
13665 struct intel_plane_state *state)
13667 struct drm_crtc *crtc = crtc_state->base.crtc;
13668 struct drm_framebuffer *fb = state->base.fb;
13669 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13673 ret = drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13674 &state->dst, &state->clip,
13675 DRM_PLANE_HELPER_NO_SCALING,
13676 DRM_PLANE_HELPER_NO_SCALING,
13677 true, true, &state->visible);
13681 /* if we want to turn off the cursor ignore width and height */
13685 /* Check for which cursor types we support */
13686 if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) {
13687 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
13688 state->base.crtc_w, state->base.crtc_h);
13692 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
13693 if (obj->base.size < stride * state->base.crtc_h) {
13694 DRM_DEBUG_KMS("buffer is too small\n");
13698 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
13699 DRM_DEBUG_KMS("cursor cannot be tiled\n");
13707 intel_disable_cursor_plane(struct drm_plane *plane,
13708 struct drm_crtc *crtc)
13710 intel_crtc_update_cursor(crtc, false);
13714 intel_commit_cursor_plane(struct drm_plane *plane,
13715 struct intel_plane_state *state)
13717 struct drm_crtc *crtc = state->base.crtc;
13718 struct drm_device *dev = plane->dev;
13719 struct intel_crtc *intel_crtc;
13720 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
13723 crtc = crtc ? crtc : plane->crtc;
13724 intel_crtc = to_intel_crtc(crtc);
13726 if (intel_crtc->cursor_bo == obj)
13731 else if (!INTEL_INFO(dev)->cursor_needs_physical)
13732 addr = i915_gem_obj_ggtt_offset(obj);
13734 addr = obj->phys_handle->busaddr;
13736 intel_crtc->cursor_addr = addr;
13737 intel_crtc->cursor_bo = obj;
13740 if (crtc->state->active)
13741 intel_crtc_update_cursor(crtc, state->visible);
13744 static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
13747 struct intel_plane *cursor;
13748 struct intel_plane_state *state;
13750 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
13751 if (cursor == NULL)
13754 state = intel_create_plane_state(&cursor->base);
13759 cursor->base.state = &state->base;
13761 cursor->can_scale = false;
13762 cursor->max_downscale = 1;
13763 cursor->pipe = pipe;
13764 cursor->plane = pipe;
13765 cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
13766 cursor->check_plane = intel_check_cursor_plane;
13767 cursor->commit_plane = intel_commit_cursor_plane;
13768 cursor->disable_plane = intel_disable_cursor_plane;
13770 drm_universal_plane_init(dev, &cursor->base, 0,
13771 &intel_plane_funcs,
13772 intel_cursor_formats,
13773 ARRAY_SIZE(intel_cursor_formats),
13774 DRM_PLANE_TYPE_CURSOR);
13776 if (INTEL_INFO(dev)->gen >= 4) {
13777 if (!dev->mode_config.rotation_property)
13778 dev->mode_config.rotation_property =
13779 drm_mode_create_rotation_property(dev,
13780 BIT(DRM_ROTATE_0) |
13781 BIT(DRM_ROTATE_180));
13782 if (dev->mode_config.rotation_property)
13783 drm_object_attach_property(&cursor->base.base,
13784 dev->mode_config.rotation_property,
13785 state->base.rotation);
13788 if (INTEL_INFO(dev)->gen >=9)
13789 state->scaler_id = -1;
13791 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
13793 return &cursor->base;
13796 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
13797 struct intel_crtc_state *crtc_state)
13800 struct intel_scaler *intel_scaler;
13801 struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
13803 for (i = 0; i < intel_crtc->num_scalers; i++) {
13804 intel_scaler = &scaler_state->scalers[i];
13805 intel_scaler->in_use = 0;
13806 intel_scaler->mode = PS_SCALER_MODE_DYN;
13809 scaler_state->scaler_id = -1;
13812 static void intel_crtc_init(struct drm_device *dev, int pipe)
13814 struct drm_i915_private *dev_priv = dev->dev_private;
13815 struct intel_crtc *intel_crtc;
13816 struct intel_crtc_state *crtc_state = NULL;
13817 struct drm_plane *primary = NULL;
13818 struct drm_plane *cursor = NULL;
13821 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
13822 if (intel_crtc == NULL)
13825 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
13828 intel_crtc->config = crtc_state;
13829 intel_crtc->base.state = &crtc_state->base;
13830 crtc_state->base.crtc = &intel_crtc->base;
13832 /* initialize shared scalers */
13833 if (INTEL_INFO(dev)->gen >= 9) {
13834 if (pipe == PIPE_C)
13835 intel_crtc->num_scalers = 1;
13837 intel_crtc->num_scalers = SKL_NUM_SCALERS;
13839 skl_init_scalers(dev, intel_crtc, crtc_state);
13842 primary = intel_primary_plane_create(dev, pipe);
13846 cursor = intel_cursor_plane_create(dev, pipe);
13850 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
13851 cursor, &intel_crtc_funcs);
13855 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
13856 for (i = 0; i < 256; i++) {
13857 intel_crtc->lut_r[i] = i;
13858 intel_crtc->lut_g[i] = i;
13859 intel_crtc->lut_b[i] = i;
13863 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
13864 * is hooked to pipe B. Hence we want plane A feeding pipe B.
13866 intel_crtc->pipe = pipe;
13867 intel_crtc->plane = pipe;
13868 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
13869 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
13870 intel_crtc->plane = !pipe;
13873 intel_crtc->cursor_base = ~0;
13874 intel_crtc->cursor_cntl = ~0;
13875 intel_crtc->cursor_size = ~0;
13877 intel_crtc->wm.cxsr_allowed = true;
13879 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
13880 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
13881 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
13882 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
13884 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
13886 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
13891 drm_plane_cleanup(primary);
13893 drm_plane_cleanup(cursor);
13898 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
13900 struct drm_encoder *encoder = connector->base.encoder;
13901 struct drm_device *dev = connector->base.dev;
13903 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
13905 if (!encoder || WARN_ON(!encoder->crtc))
13906 return INVALID_PIPE;
13908 return to_intel_crtc(encoder->crtc)->pipe;
13911 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
13912 struct drm_file *file)
13914 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
13915 struct drm_crtc *drmmode_crtc;
13916 struct intel_crtc *crtc;
13918 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
13920 if (!drmmode_crtc) {
13921 DRM_ERROR("no such CRTC id\n");
13925 crtc = to_intel_crtc(drmmode_crtc);
13926 pipe_from_crtc_id->pipe = crtc->pipe;
13931 static int intel_encoder_clones(struct intel_encoder *encoder)
13933 struct drm_device *dev = encoder->base.dev;
13934 struct intel_encoder *source_encoder;
13935 int index_mask = 0;
13938 for_each_intel_encoder(dev, source_encoder) {
13939 if (encoders_cloneable(encoder, source_encoder))
13940 index_mask |= (1 << entry);
13948 static bool has_edp_a(struct drm_device *dev)
13950 struct drm_i915_private *dev_priv = dev->dev_private;
13952 if (!IS_MOBILE(dev))
13955 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
13958 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
13964 static bool intel_crt_present(struct drm_device *dev)
13966 struct drm_i915_private *dev_priv = dev->dev_private;
13968 if (INTEL_INFO(dev)->gen >= 9)
13971 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
13974 if (IS_CHERRYVIEW(dev))
13977 if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
13983 static void intel_setup_outputs(struct drm_device *dev)
13985 struct drm_i915_private *dev_priv = dev->dev_private;
13986 struct intel_encoder *encoder;
13987 bool dpd_is_edp = false;
13989 intel_lvds_init(dev);
13991 if (intel_crt_present(dev))
13992 intel_crt_init(dev);
13994 if (IS_BROXTON(dev)) {
13996 * FIXME: Broxton doesn't support port detection via the
13997 * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
13998 * detect the ports.
14000 intel_ddi_init(dev, PORT_A);
14001 intel_ddi_init(dev, PORT_B);
14002 intel_ddi_init(dev, PORT_C);
14003 } else if (HAS_DDI(dev)) {
14007 * Haswell uses DDI functions to detect digital outputs.
14008 * On SKL pre-D0 the strap isn't connected, so we assume
14011 found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
14012 /* WaIgnoreDDIAStrap: skl */
14013 if (found || IS_SKYLAKE(dev))
14014 intel_ddi_init(dev, PORT_A);
14016 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
14018 found = I915_READ(SFUSE_STRAP);
14020 if (found & SFUSE_STRAP_DDIB_DETECTED)
14021 intel_ddi_init(dev, PORT_B);
14022 if (found & SFUSE_STRAP_DDIC_DETECTED)
14023 intel_ddi_init(dev, PORT_C);
14024 if (found & SFUSE_STRAP_DDID_DETECTED)
14025 intel_ddi_init(dev, PORT_D);
14027 * On SKL we don't have a way to detect DDI-E so we rely on VBT.
14029 if (IS_SKYLAKE(dev) &&
14030 (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
14031 dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
14032 dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
14033 intel_ddi_init(dev, PORT_E);
14035 } else if (HAS_PCH_SPLIT(dev)) {
14037 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
14039 if (has_edp_a(dev))
14040 intel_dp_init(dev, DP_A, PORT_A);
14042 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
14043 /* PCH SDVOB multiplex with HDMIB */
14044 found = intel_sdvo_init(dev, PCH_SDVOB, true);
14046 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
14047 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
14048 intel_dp_init(dev, PCH_DP_B, PORT_B);
14051 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
14052 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
14054 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
14055 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
14057 if (I915_READ(PCH_DP_C) & DP_DETECTED)
14058 intel_dp_init(dev, PCH_DP_C, PORT_C);
14060 if (I915_READ(PCH_DP_D) & DP_DETECTED)
14061 intel_dp_init(dev, PCH_DP_D, PORT_D);
14062 } else if (IS_VALLEYVIEW(dev)) {
14064 * The DP_DETECTED bit is the latched state of the DDC
14065 * SDA pin at boot. However since eDP doesn't require DDC
14066 * (no way to plug in a DP->HDMI dongle) the DDC pins for
14067 * eDP ports may have been muxed to an alternate function.
14068 * Thus we can't rely on the DP_DETECTED bit alone to detect
14069 * eDP ports. Consult the VBT as well as DP_DETECTED to
14070 * detect eDP ports.
14072 if (I915_READ(VLV_HDMIB) & SDVO_DETECTED &&
14073 !intel_dp_is_edp(dev, PORT_B))
14074 intel_hdmi_init(dev, VLV_HDMIB, PORT_B);
14075 if (I915_READ(VLV_DP_B) & DP_DETECTED ||
14076 intel_dp_is_edp(dev, PORT_B))
14077 intel_dp_init(dev, VLV_DP_B, PORT_B);
14079 if (I915_READ(VLV_HDMIC) & SDVO_DETECTED &&
14080 !intel_dp_is_edp(dev, PORT_C))
14081 intel_hdmi_init(dev, VLV_HDMIC, PORT_C);
14082 if (I915_READ(VLV_DP_C) & DP_DETECTED ||
14083 intel_dp_is_edp(dev, PORT_C))
14084 intel_dp_init(dev, VLV_DP_C, PORT_C);
14086 if (IS_CHERRYVIEW(dev)) {
14087 /* eDP not supported on port D, so don't check VBT */
14088 if (I915_READ(CHV_HDMID) & SDVO_DETECTED)
14089 intel_hdmi_init(dev, CHV_HDMID, PORT_D);
14090 if (I915_READ(CHV_DP_D) & DP_DETECTED)
14091 intel_dp_init(dev, CHV_DP_D, PORT_D);
14094 intel_dsi_init(dev);
14095 } else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) {
14096 bool found = false;
14098 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14099 DRM_DEBUG_KMS("probing SDVOB\n");
14100 found = intel_sdvo_init(dev, GEN3_SDVOB, true);
14101 if (!found && IS_G4X(dev)) {
14102 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
14103 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
14106 if (!found && IS_G4X(dev))
14107 intel_dp_init(dev, DP_B, PORT_B);
14110 /* Before G4X SDVOC doesn't have its own detect register */
14112 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14113 DRM_DEBUG_KMS("probing SDVOC\n");
14114 found = intel_sdvo_init(dev, GEN3_SDVOC, false);
14117 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
14120 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
14121 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
14124 intel_dp_init(dev, DP_C, PORT_C);
14128 (I915_READ(DP_D) & DP_DETECTED))
14129 intel_dp_init(dev, DP_D, PORT_D);
14130 } else if (IS_GEN2(dev))
14131 intel_dvo_init(dev);
14133 if (SUPPORTS_TV(dev))
14134 intel_tv_init(dev);
14136 intel_psr_init(dev);
14138 for_each_intel_encoder(dev, encoder) {
14139 encoder->base.possible_crtcs = encoder->crtc_mask;
14140 encoder->base.possible_clones =
14141 intel_encoder_clones(encoder);
14144 intel_init_pch_refclk(dev);
14146 drm_helper_move_panel_connectors_to_head(dev);
14149 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
14151 struct drm_device *dev = fb->dev;
14152 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14154 drm_framebuffer_cleanup(fb);
14155 mutex_lock(&dev->struct_mutex);
14156 WARN_ON(!intel_fb->obj->framebuffer_references--);
14157 drm_gem_object_unreference(&intel_fb->obj->base);
14158 mutex_unlock(&dev->struct_mutex);
14162 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
14163 struct drm_file *file,
14164 unsigned int *handle)
14166 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14167 struct drm_i915_gem_object *obj = intel_fb->obj;
14169 if (obj->userptr.mm) {
14170 DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
14174 return drm_gem_handle_create(file, &obj->base, handle);
14177 static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
14178 struct drm_file *file,
14179 unsigned flags, unsigned color,
14180 struct drm_clip_rect *clips,
14181 unsigned num_clips)
14183 struct drm_device *dev = fb->dev;
14184 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14185 struct drm_i915_gem_object *obj = intel_fb->obj;
14187 mutex_lock(&dev->struct_mutex);
14188 intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB);
14189 mutex_unlock(&dev->struct_mutex);
14194 static const struct drm_framebuffer_funcs intel_fb_funcs = {
14195 .destroy = intel_user_framebuffer_destroy,
14196 .create_handle = intel_user_framebuffer_create_handle,
14197 .dirty = intel_user_framebuffer_dirty,
14201 u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
14202 uint32_t pixel_format)
14204 u32 gen = INTEL_INFO(dev)->gen;
14207 /* "The stride in bytes must not exceed the of the size of 8K
14208 * pixels and 32K bytes."
14210 return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
14211 } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
14213 } else if (gen >= 4) {
14214 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14218 } else if (gen >= 3) {
14219 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14224 /* XXX DSPC is limited to 4k tiled */
14229 static int intel_framebuffer_init(struct drm_device *dev,
14230 struct intel_framebuffer *intel_fb,
14231 struct drm_mode_fb_cmd2 *mode_cmd,
14232 struct drm_i915_gem_object *obj)
14234 unsigned int aligned_height;
14236 u32 pitch_limit, stride_alignment;
14238 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
14240 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
14241 /* Enforce that fb modifier and tiling mode match, but only for
14242 * X-tiled. This is needed for FBC. */
14243 if (!!(obj->tiling_mode == I915_TILING_X) !=
14244 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
14245 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
14249 if (obj->tiling_mode == I915_TILING_X)
14250 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
14251 else if (obj->tiling_mode == I915_TILING_Y) {
14252 DRM_DEBUG("No Y tiling for legacy addfb\n");
14257 /* Passed in modifier sanity checking. */
14258 switch (mode_cmd->modifier[0]) {
14259 case I915_FORMAT_MOD_Y_TILED:
14260 case I915_FORMAT_MOD_Yf_TILED:
14261 if (INTEL_INFO(dev)->gen < 9) {
14262 DRM_DEBUG("Unsupported tiling 0x%llx!\n",
14263 mode_cmd->modifier[0]);
14266 case DRM_FORMAT_MOD_NONE:
14267 case I915_FORMAT_MOD_X_TILED:
14270 DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
14271 mode_cmd->modifier[0]);
14275 stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
14276 mode_cmd->pixel_format);
14277 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
14278 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
14279 mode_cmd->pitches[0], stride_alignment);
14283 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
14284 mode_cmd->pixel_format);
14285 if (mode_cmd->pitches[0] > pitch_limit) {
14286 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
14287 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
14288 "tiled" : "linear",
14289 mode_cmd->pitches[0], pitch_limit);
14293 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
14294 mode_cmd->pitches[0] != obj->stride) {
14295 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
14296 mode_cmd->pitches[0], obj->stride);
14300 /* Reject formats not supported by any plane early. */
14301 switch (mode_cmd->pixel_format) {
14302 case DRM_FORMAT_C8:
14303 case DRM_FORMAT_RGB565:
14304 case DRM_FORMAT_XRGB8888:
14305 case DRM_FORMAT_ARGB8888:
14307 case DRM_FORMAT_XRGB1555:
14308 if (INTEL_INFO(dev)->gen > 3) {
14309 DRM_DEBUG("unsupported pixel format: %s\n",
14310 drm_get_format_name(mode_cmd->pixel_format));
14314 case DRM_FORMAT_ABGR8888:
14315 if (!IS_VALLEYVIEW(dev) && INTEL_INFO(dev)->gen < 9) {
14316 DRM_DEBUG("unsupported pixel format: %s\n",
14317 drm_get_format_name(mode_cmd->pixel_format));
14321 case DRM_FORMAT_XBGR8888:
14322 case DRM_FORMAT_XRGB2101010:
14323 case DRM_FORMAT_XBGR2101010:
14324 if (INTEL_INFO(dev)->gen < 4) {
14325 DRM_DEBUG("unsupported pixel format: %s\n",
14326 drm_get_format_name(mode_cmd->pixel_format));
14330 case DRM_FORMAT_ABGR2101010:
14331 if (!IS_VALLEYVIEW(dev)) {
14332 DRM_DEBUG("unsupported pixel format: %s\n",
14333 drm_get_format_name(mode_cmd->pixel_format));
14337 case DRM_FORMAT_YUYV:
14338 case DRM_FORMAT_UYVY:
14339 case DRM_FORMAT_YVYU:
14340 case DRM_FORMAT_VYUY:
14341 if (INTEL_INFO(dev)->gen < 5) {
14342 DRM_DEBUG("unsupported pixel format: %s\n",
14343 drm_get_format_name(mode_cmd->pixel_format));
14348 DRM_DEBUG("unsupported pixel format: %s\n",
14349 drm_get_format_name(mode_cmd->pixel_format));
14353 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
14354 if (mode_cmd->offsets[0] != 0)
14357 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
14358 mode_cmd->pixel_format,
14359 mode_cmd->modifier[0]);
14360 /* FIXME drm helper for size checks (especially planar formats)? */
14361 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
14364 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
14365 intel_fb->obj = obj;
14366 intel_fb->obj->framebuffer_references++;
14368 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
14370 DRM_ERROR("framebuffer init failed %d\n", ret);
14377 static struct drm_framebuffer *
14378 intel_user_framebuffer_create(struct drm_device *dev,
14379 struct drm_file *filp,
14380 struct drm_mode_fb_cmd2 *user_mode_cmd)
14382 struct drm_i915_gem_object *obj;
14383 struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
14385 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
14386 mode_cmd.handles[0]));
14387 if (&obj->base == NULL)
14388 return ERR_PTR(-ENOENT);
14390 return intel_framebuffer_create(dev, &mode_cmd, obj);
14393 #ifndef CONFIG_DRM_FBDEV_EMULATION
14394 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
14399 static const struct drm_mode_config_funcs intel_mode_funcs = {
14400 .fb_create = intel_user_framebuffer_create,
14401 .output_poll_changed = intel_fbdev_output_poll_changed,
14402 .atomic_check = intel_atomic_check,
14403 .atomic_commit = intel_atomic_commit,
14404 .atomic_state_alloc = intel_atomic_state_alloc,
14405 .atomic_state_clear = intel_atomic_state_clear,
14408 /* Set up chip specific display functions */
14409 static void intel_init_display(struct drm_device *dev)
14411 struct drm_i915_private *dev_priv = dev->dev_private;
14413 if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
14414 dev_priv->display.find_dpll = g4x_find_best_dpll;
14415 else if (IS_CHERRYVIEW(dev))
14416 dev_priv->display.find_dpll = chv_find_best_dpll;
14417 else if (IS_VALLEYVIEW(dev))
14418 dev_priv->display.find_dpll = vlv_find_best_dpll;
14419 else if (IS_PINEVIEW(dev))
14420 dev_priv->display.find_dpll = pnv_find_best_dpll;
14422 dev_priv->display.find_dpll = i9xx_find_best_dpll;
14424 if (INTEL_INFO(dev)->gen >= 9) {
14425 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14426 dev_priv->display.get_initial_plane_config =
14427 skylake_get_initial_plane_config;
14428 dev_priv->display.crtc_compute_clock =
14429 haswell_crtc_compute_clock;
14430 dev_priv->display.crtc_enable = haswell_crtc_enable;
14431 dev_priv->display.crtc_disable = haswell_crtc_disable;
14432 dev_priv->display.update_primary_plane =
14433 skylake_update_primary_plane;
14434 } else if (HAS_DDI(dev)) {
14435 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14436 dev_priv->display.get_initial_plane_config =
14437 ironlake_get_initial_plane_config;
14438 dev_priv->display.crtc_compute_clock =
14439 haswell_crtc_compute_clock;
14440 dev_priv->display.crtc_enable = haswell_crtc_enable;
14441 dev_priv->display.crtc_disable = haswell_crtc_disable;
14442 dev_priv->display.update_primary_plane =
14443 ironlake_update_primary_plane;
14444 } else if (HAS_PCH_SPLIT(dev)) {
14445 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
14446 dev_priv->display.get_initial_plane_config =
14447 ironlake_get_initial_plane_config;
14448 dev_priv->display.crtc_compute_clock =
14449 ironlake_crtc_compute_clock;
14450 dev_priv->display.crtc_enable = ironlake_crtc_enable;
14451 dev_priv->display.crtc_disable = ironlake_crtc_disable;
14452 dev_priv->display.update_primary_plane =
14453 ironlake_update_primary_plane;
14454 } else if (IS_VALLEYVIEW(dev)) {
14455 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14456 dev_priv->display.get_initial_plane_config =
14457 i9xx_get_initial_plane_config;
14458 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14459 dev_priv->display.crtc_enable = valleyview_crtc_enable;
14460 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14461 dev_priv->display.update_primary_plane =
14462 i9xx_update_primary_plane;
14464 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14465 dev_priv->display.get_initial_plane_config =
14466 i9xx_get_initial_plane_config;
14467 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14468 dev_priv->display.crtc_enable = i9xx_crtc_enable;
14469 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14470 dev_priv->display.update_primary_plane =
14471 i9xx_update_primary_plane;
14474 /* Returns the core display clock speed */
14475 if (IS_SKYLAKE(dev))
14476 dev_priv->display.get_display_clock_speed =
14477 skylake_get_display_clock_speed;
14478 else if (IS_BROXTON(dev))
14479 dev_priv->display.get_display_clock_speed =
14480 broxton_get_display_clock_speed;
14481 else if (IS_BROADWELL(dev))
14482 dev_priv->display.get_display_clock_speed =
14483 broadwell_get_display_clock_speed;
14484 else if (IS_HASWELL(dev))
14485 dev_priv->display.get_display_clock_speed =
14486 haswell_get_display_clock_speed;
14487 else if (IS_VALLEYVIEW(dev))
14488 dev_priv->display.get_display_clock_speed =
14489 valleyview_get_display_clock_speed;
14490 else if (IS_GEN5(dev))
14491 dev_priv->display.get_display_clock_speed =
14492 ilk_get_display_clock_speed;
14493 else if (IS_I945G(dev) || IS_BROADWATER(dev) ||
14494 IS_GEN6(dev) || IS_IVYBRIDGE(dev))
14495 dev_priv->display.get_display_clock_speed =
14496 i945_get_display_clock_speed;
14497 else if (IS_GM45(dev))
14498 dev_priv->display.get_display_clock_speed =
14499 gm45_get_display_clock_speed;
14500 else if (IS_CRESTLINE(dev))
14501 dev_priv->display.get_display_clock_speed =
14502 i965gm_get_display_clock_speed;
14503 else if (IS_PINEVIEW(dev))
14504 dev_priv->display.get_display_clock_speed =
14505 pnv_get_display_clock_speed;
14506 else if (IS_G33(dev) || IS_G4X(dev))
14507 dev_priv->display.get_display_clock_speed =
14508 g33_get_display_clock_speed;
14509 else if (IS_I915G(dev))
14510 dev_priv->display.get_display_clock_speed =
14511 i915_get_display_clock_speed;
14512 else if (IS_I945GM(dev) || IS_845G(dev))
14513 dev_priv->display.get_display_clock_speed =
14514 i9xx_misc_get_display_clock_speed;
14515 else if (IS_PINEVIEW(dev))
14516 dev_priv->display.get_display_clock_speed =
14517 pnv_get_display_clock_speed;
14518 else if (IS_I915GM(dev))
14519 dev_priv->display.get_display_clock_speed =
14520 i915gm_get_display_clock_speed;
14521 else if (IS_I865G(dev))
14522 dev_priv->display.get_display_clock_speed =
14523 i865_get_display_clock_speed;
14524 else if (IS_I85X(dev))
14525 dev_priv->display.get_display_clock_speed =
14526 i85x_get_display_clock_speed;
14528 WARN(!IS_I830(dev), "Unknown platform. Assuming 133 MHz CDCLK\n");
14529 dev_priv->display.get_display_clock_speed =
14530 i830_get_display_clock_speed;
14533 if (IS_GEN5(dev)) {
14534 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
14535 } else if (IS_GEN6(dev)) {
14536 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
14537 } else if (IS_IVYBRIDGE(dev)) {
14538 /* FIXME: detect B0+ stepping and use auto training */
14539 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
14540 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
14541 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
14542 if (IS_BROADWELL(dev)) {
14543 dev_priv->display.modeset_commit_cdclk =
14544 broadwell_modeset_commit_cdclk;
14545 dev_priv->display.modeset_calc_cdclk =
14546 broadwell_modeset_calc_cdclk;
14548 } else if (IS_VALLEYVIEW(dev)) {
14549 dev_priv->display.modeset_commit_cdclk =
14550 valleyview_modeset_commit_cdclk;
14551 dev_priv->display.modeset_calc_cdclk =
14552 valleyview_modeset_calc_cdclk;
14553 } else if (IS_BROXTON(dev)) {
14554 dev_priv->display.modeset_commit_cdclk =
14555 broxton_modeset_commit_cdclk;
14556 dev_priv->display.modeset_calc_cdclk =
14557 broxton_modeset_calc_cdclk;
14560 switch (INTEL_INFO(dev)->gen) {
14562 dev_priv->display.queue_flip = intel_gen2_queue_flip;
14566 dev_priv->display.queue_flip = intel_gen3_queue_flip;
14571 dev_priv->display.queue_flip = intel_gen4_queue_flip;
14575 dev_priv->display.queue_flip = intel_gen6_queue_flip;
14578 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
14579 dev_priv->display.queue_flip = intel_gen7_queue_flip;
14582 /* Drop through - unsupported since execlist only. */
14584 /* Default just returns -ENODEV to indicate unsupported */
14585 dev_priv->display.queue_flip = intel_default_queue_flip;
14588 mutex_init(&dev_priv->pps_mutex);
14592 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
14593 * resume, or other times. This quirk makes sure that's the case for
14594 * affected systems.
14596 static void quirk_pipea_force(struct drm_device *dev)
14598 struct drm_i915_private *dev_priv = dev->dev_private;
14600 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
14601 DRM_INFO("applying pipe a force quirk\n");
14604 static void quirk_pipeb_force(struct drm_device *dev)
14606 struct drm_i915_private *dev_priv = dev->dev_private;
14608 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
14609 DRM_INFO("applying pipe b force quirk\n");
14613 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
14615 static void quirk_ssc_force_disable(struct drm_device *dev)
14617 struct drm_i915_private *dev_priv = dev->dev_private;
14618 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
14619 DRM_INFO("applying lvds SSC disable quirk\n");
14623 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
14626 static void quirk_invert_brightness(struct drm_device *dev)
14628 struct drm_i915_private *dev_priv = dev->dev_private;
14629 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
14630 DRM_INFO("applying inverted panel brightness quirk\n");
14633 /* Some VBT's incorrectly indicate no backlight is present */
14634 static void quirk_backlight_present(struct drm_device *dev)
14636 struct drm_i915_private *dev_priv = dev->dev_private;
14637 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
14638 DRM_INFO("applying backlight present quirk\n");
14641 struct intel_quirk {
14643 int subsystem_vendor;
14644 int subsystem_device;
14645 void (*hook)(struct drm_device *dev);
14648 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
14649 struct intel_dmi_quirk {
14650 void (*hook)(struct drm_device *dev);
14651 const struct dmi_system_id (*dmi_id_list)[];
14654 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
14656 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
14660 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
14662 .dmi_id_list = &(const struct dmi_system_id[]) {
14664 .callback = intel_dmi_reverse_brightness,
14665 .ident = "NCR Corporation",
14666 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
14667 DMI_MATCH(DMI_PRODUCT_NAME, ""),
14670 { } /* terminating entry */
14672 .hook = quirk_invert_brightness,
14676 static struct intel_quirk intel_quirks[] = {
14677 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
14678 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
14680 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
14681 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
14683 /* 830 needs to leave pipe A & dpll A up */
14684 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
14686 /* 830 needs to leave pipe B & dpll B up */
14687 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
14689 /* Lenovo U160 cannot use SSC on LVDS */
14690 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
14692 /* Sony Vaio Y cannot use SSC on LVDS */
14693 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
14695 /* Acer Aspire 5734Z must invert backlight brightness */
14696 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
14698 /* Acer/eMachines G725 */
14699 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
14701 /* Acer/eMachines e725 */
14702 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
14704 /* Acer/Packard Bell NCL20 */
14705 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
14707 /* Acer Aspire 4736Z */
14708 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
14710 /* Acer Aspire 5336 */
14711 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
14713 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
14714 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
14716 /* Acer C720 Chromebook (Core i3 4005U) */
14717 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
14719 /* Apple Macbook 2,1 (Core 2 T7400) */
14720 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
14722 /* Apple Macbook 4,1 */
14723 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
14725 /* Toshiba CB35 Chromebook (Celeron 2955U) */
14726 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
14728 /* HP Chromebook 14 (Celeron 2955U) */
14729 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
14731 /* Dell Chromebook 11 */
14732 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
14734 /* Dell Chromebook 11 (2015 version) */
14735 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
14738 static void intel_init_quirks(struct drm_device *dev)
14740 struct pci_dev *d = dev->pdev;
14743 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
14744 struct intel_quirk *q = &intel_quirks[i];
14746 if (d->device == q->device &&
14747 (d->subsystem_vendor == q->subsystem_vendor ||
14748 q->subsystem_vendor == PCI_ANY_ID) &&
14749 (d->subsystem_device == q->subsystem_device ||
14750 q->subsystem_device == PCI_ANY_ID))
14753 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
14754 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
14755 intel_dmi_quirks[i].hook(dev);
14759 /* Disable the VGA plane that we never use */
14760 static void i915_disable_vga(struct drm_device *dev)
14762 struct drm_i915_private *dev_priv = dev->dev_private;
14764 u32 vga_reg = i915_vgacntrl_reg(dev);
14766 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
14767 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
14768 outb(SR01, VGA_SR_INDEX);
14769 sr1 = inb(VGA_SR_DATA);
14770 outb(sr1 | 1<<5, VGA_SR_DATA);
14771 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
14774 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
14775 POSTING_READ(vga_reg);
14778 void intel_modeset_init_hw(struct drm_device *dev)
14780 intel_update_cdclk(dev);
14781 intel_prepare_ddi(dev);
14782 intel_init_clock_gating(dev);
14783 intel_enable_gt_powersave(dev);
14786 void intel_modeset_init(struct drm_device *dev)
14788 struct drm_i915_private *dev_priv = dev->dev_private;
14791 struct intel_crtc *crtc;
14793 drm_mode_config_init(dev);
14795 dev->mode_config.min_width = 0;
14796 dev->mode_config.min_height = 0;
14798 dev->mode_config.preferred_depth = 24;
14799 dev->mode_config.prefer_shadow = 1;
14801 dev->mode_config.allow_fb_modifiers = true;
14803 dev->mode_config.funcs = &intel_mode_funcs;
14805 intel_init_quirks(dev);
14807 intel_init_pm(dev);
14809 if (INTEL_INFO(dev)->num_pipes == 0)
14813 * There may be no VBT; and if the BIOS enabled SSC we can
14814 * just keep using it to avoid unnecessary flicker. Whereas if the
14815 * BIOS isn't using it, don't assume it will work even if the VBT
14816 * indicates as much.
14818 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
14819 bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
14822 if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
14823 DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
14824 bios_lvds_use_ssc ? "en" : "dis",
14825 dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
14826 dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
14830 intel_init_display(dev);
14831 intel_init_audio(dev);
14833 if (IS_GEN2(dev)) {
14834 dev->mode_config.max_width = 2048;
14835 dev->mode_config.max_height = 2048;
14836 } else if (IS_GEN3(dev)) {
14837 dev->mode_config.max_width = 4096;
14838 dev->mode_config.max_height = 4096;
14840 dev->mode_config.max_width = 8192;
14841 dev->mode_config.max_height = 8192;
14844 if (IS_845G(dev) || IS_I865G(dev)) {
14845 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
14846 dev->mode_config.cursor_height = 1023;
14847 } else if (IS_GEN2(dev)) {
14848 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
14849 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
14851 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
14852 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
14855 dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
14857 DRM_DEBUG_KMS("%d display pipe%s available.\n",
14858 INTEL_INFO(dev)->num_pipes,
14859 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
14861 for_each_pipe(dev_priv, pipe) {
14862 intel_crtc_init(dev, pipe);
14863 for_each_sprite(dev_priv, pipe, sprite) {
14864 ret = intel_plane_init(dev, pipe, sprite);
14866 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
14867 pipe_name(pipe), sprite_name(pipe, sprite), ret);
14871 intel_update_czclk(dev_priv);
14872 intel_update_cdclk(dev);
14874 intel_shared_dpll_init(dev);
14876 /* Just disable it once at startup */
14877 i915_disable_vga(dev);
14878 intel_setup_outputs(dev);
14880 /* Just in case the BIOS is doing something questionable. */
14881 intel_fbc_disable(dev_priv);
14883 drm_modeset_lock_all(dev);
14884 intel_modeset_setup_hw_state(dev);
14885 drm_modeset_unlock_all(dev);
14887 for_each_intel_crtc(dev, crtc) {
14888 struct intel_initial_plane_config plane_config = {};
14894 * Note that reserving the BIOS fb up front prevents us
14895 * from stuffing other stolen allocations like the ring
14896 * on top. This prevents some ugliness at boot time, and
14897 * can even allow for smooth boot transitions if the BIOS
14898 * fb is large enough for the active pipe configuration.
14900 dev_priv->display.get_initial_plane_config(crtc,
14904 * If the fb is shared between multiple heads, we'll
14905 * just get the first one.
14907 intel_find_initial_plane_obj(crtc, &plane_config);
14911 static void intel_enable_pipe_a(struct drm_device *dev)
14913 struct intel_connector *connector;
14914 struct drm_connector *crt = NULL;
14915 struct intel_load_detect_pipe load_detect_temp;
14916 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
14918 /* We can't just switch on the pipe A, we need to set things up with a
14919 * proper mode and output configuration. As a gross hack, enable pipe A
14920 * by enabling the load detect pipe once. */
14921 for_each_intel_connector(dev, connector) {
14922 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
14923 crt = &connector->base;
14931 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
14932 intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
14936 intel_check_plane_mapping(struct intel_crtc *crtc)
14938 struct drm_device *dev = crtc->base.dev;
14939 struct drm_i915_private *dev_priv = dev->dev_private;
14942 if (INTEL_INFO(dev)->num_pipes == 1)
14945 val = I915_READ(DSPCNTR(!crtc->plane));
14947 if ((val & DISPLAY_PLANE_ENABLE) &&
14948 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
14954 static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
14956 struct drm_device *dev = crtc->base.dev;
14957 struct intel_encoder *encoder;
14959 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
14965 static void intel_sanitize_crtc(struct intel_crtc *crtc)
14967 struct drm_device *dev = crtc->base.dev;
14968 struct drm_i915_private *dev_priv = dev->dev_private;
14971 /* Clear any frame start delays used for debugging left by the BIOS */
14972 reg = PIPECONF(crtc->config->cpu_transcoder);
14973 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
14975 /* restore vblank interrupts to correct state */
14976 drm_crtc_vblank_reset(&crtc->base);
14977 if (crtc->active) {
14978 struct intel_plane *plane;
14980 drm_crtc_vblank_on(&crtc->base);
14982 /* Disable everything but the primary plane */
14983 for_each_intel_plane_on_crtc(dev, crtc, plane) {
14984 if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
14987 plane->disable_plane(&plane->base, &crtc->base);
14991 /* We need to sanitize the plane -> pipe mapping first because this will
14992 * disable the crtc (and hence change the state) if it is wrong. Note
14993 * that gen4+ has a fixed plane -> pipe mapping. */
14994 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
14997 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
14998 crtc->base.base.id);
15000 /* Pipe has the wrong plane attached and the plane is active.
15001 * Temporarily change the plane mapping and disable everything
15003 plane = crtc->plane;
15004 to_intel_plane_state(crtc->base.primary->state)->visible = true;
15005 crtc->plane = !plane;
15006 intel_crtc_disable_noatomic(&crtc->base);
15007 crtc->plane = plane;
15010 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
15011 crtc->pipe == PIPE_A && !crtc->active) {
15012 /* BIOS forgot to enable pipe A, this mostly happens after
15013 * resume. Force-enable the pipe to fix this, the update_dpms
15014 * call below we restore the pipe to the right state, but leave
15015 * the required bits on. */
15016 intel_enable_pipe_a(dev);
15019 /* Adjust the state of the output pipe according to whether we
15020 * have active connectors/encoders. */
15021 if (!intel_crtc_has_encoders(crtc))
15022 intel_crtc_disable_noatomic(&crtc->base);
15024 if (crtc->active != crtc->base.state->active) {
15025 struct intel_encoder *encoder;
15027 /* This can happen either due to bugs in the get_hw_state
15028 * functions or because of calls to intel_crtc_disable_noatomic,
15029 * or because the pipe is force-enabled due to the
15031 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
15032 crtc->base.base.id,
15033 crtc->base.state->enable ? "enabled" : "disabled",
15034 crtc->active ? "enabled" : "disabled");
15036 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, NULL) < 0);
15037 crtc->base.state->active = crtc->active;
15038 crtc->base.enabled = crtc->active;
15040 /* Because we only establish the connector -> encoder ->
15041 * crtc links if something is active, this means the
15042 * crtc is now deactivated. Break the links. connector
15043 * -> encoder links are only establish when things are
15044 * actually up, hence no need to break them. */
15045 WARN_ON(crtc->active);
15047 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
15048 encoder->base.crtc = NULL;
15051 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
15053 * We start out with underrun reporting disabled to avoid races.
15054 * For correct bookkeeping mark this on active crtcs.
15056 * Also on gmch platforms we dont have any hardware bits to
15057 * disable the underrun reporting. Which means we need to start
15058 * out with underrun reporting disabled also on inactive pipes,
15059 * since otherwise we'll complain about the garbage we read when
15060 * e.g. coming up after runtime pm.
15062 * No protection against concurrent access is required - at
15063 * worst a fifo underrun happens which also sets this to false.
15065 crtc->cpu_fifo_underrun_disabled = true;
15066 crtc->pch_fifo_underrun_disabled = true;
15070 static void intel_sanitize_encoder(struct intel_encoder *encoder)
15072 struct intel_connector *connector;
15073 struct drm_device *dev = encoder->base.dev;
15074 bool active = false;
15076 /* We need to check both for a crtc link (meaning that the
15077 * encoder is active and trying to read from a pipe) and the
15078 * pipe itself being active. */
15079 bool has_active_crtc = encoder->base.crtc &&
15080 to_intel_crtc(encoder->base.crtc)->active;
15082 for_each_intel_connector(dev, connector) {
15083 if (connector->base.encoder != &encoder->base)
15090 if (active && !has_active_crtc) {
15091 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
15092 encoder->base.base.id,
15093 encoder->base.name);
15095 /* Connector is active, but has no active pipe. This is
15096 * fallout from our resume register restoring. Disable
15097 * the encoder manually again. */
15098 if (encoder->base.crtc) {
15099 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
15100 encoder->base.base.id,
15101 encoder->base.name);
15102 encoder->disable(encoder);
15103 if (encoder->post_disable)
15104 encoder->post_disable(encoder);
15106 encoder->base.crtc = NULL;
15108 /* Inconsistent output/port/pipe state happens presumably due to
15109 * a bug in one of the get_hw_state functions. Or someplace else
15110 * in our code, like the register restore mess on resume. Clamp
15111 * things to off as a safer default. */
15112 for_each_intel_connector(dev, connector) {
15113 if (connector->encoder != encoder)
15115 connector->base.dpms = DRM_MODE_DPMS_OFF;
15116 connector->base.encoder = NULL;
15119 /* Enabled encoders without active connectors will be fixed in
15120 * the crtc fixup. */
15123 void i915_redisable_vga_power_on(struct drm_device *dev)
15125 struct drm_i915_private *dev_priv = dev->dev_private;
15126 u32 vga_reg = i915_vgacntrl_reg(dev);
15128 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
15129 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
15130 i915_disable_vga(dev);
15134 void i915_redisable_vga(struct drm_device *dev)
15136 struct drm_i915_private *dev_priv = dev->dev_private;
15138 /* This function can be called both from intel_modeset_setup_hw_state or
15139 * at a very early point in our resume sequence, where the power well
15140 * structures are not yet restored. Since this function is at a very
15141 * paranoid "someone might have enabled VGA while we were not looking"
15142 * level, just check if the power well is enabled instead of trying to
15143 * follow the "don't touch the power well if we don't need it" policy
15144 * the rest of the driver uses. */
15145 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
15148 i915_redisable_vga_power_on(dev);
15151 static bool primary_get_hw_state(struct intel_plane *plane)
15153 struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
15155 return I915_READ(DSPCNTR(plane->plane)) & DISPLAY_PLANE_ENABLE;
15158 /* FIXME read out full plane state for all planes */
15159 static void readout_plane_state(struct intel_crtc *crtc)
15161 struct drm_plane *primary = crtc->base.primary;
15162 struct intel_plane_state *plane_state =
15163 to_intel_plane_state(primary->state);
15165 plane_state->visible =
15166 primary_get_hw_state(to_intel_plane(primary));
15168 if (plane_state->visible)
15169 crtc->base.state->plane_mask |= 1 << drm_plane_index(primary);
15172 static void intel_modeset_readout_hw_state(struct drm_device *dev)
15174 struct drm_i915_private *dev_priv = dev->dev_private;
15176 struct intel_crtc *crtc;
15177 struct intel_encoder *encoder;
15178 struct intel_connector *connector;
15181 for_each_intel_crtc(dev, crtc) {
15182 __drm_atomic_helper_crtc_destroy_state(&crtc->base, crtc->base.state);
15183 memset(crtc->config, 0, sizeof(*crtc->config));
15184 crtc->config->base.crtc = &crtc->base;
15186 crtc->active = dev_priv->display.get_pipe_config(crtc,
15189 crtc->base.state->active = crtc->active;
15190 crtc->base.enabled = crtc->active;
15192 readout_plane_state(crtc);
15194 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
15195 crtc->base.base.id,
15196 crtc->active ? "enabled" : "disabled");
15199 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15200 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15202 pll->on = pll->get_hw_state(dev_priv, pll,
15203 &pll->config.hw_state);
15205 pll->config.crtc_mask = 0;
15206 for_each_intel_crtc(dev, crtc) {
15207 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
15209 pll->config.crtc_mask |= 1 << crtc->pipe;
15213 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
15214 pll->name, pll->config.crtc_mask, pll->on);
15216 if (pll->config.crtc_mask)
15217 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
15220 for_each_intel_encoder(dev, encoder) {
15223 if (encoder->get_hw_state(encoder, &pipe)) {
15224 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15225 encoder->base.crtc = &crtc->base;
15226 encoder->get_config(encoder, crtc->config);
15228 encoder->base.crtc = NULL;
15231 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
15232 encoder->base.base.id,
15233 encoder->base.name,
15234 encoder->base.crtc ? "enabled" : "disabled",
15238 for_each_intel_connector(dev, connector) {
15239 if (connector->get_hw_state(connector)) {
15240 connector->base.dpms = DRM_MODE_DPMS_ON;
15241 connector->base.encoder = &connector->encoder->base;
15243 connector->base.dpms = DRM_MODE_DPMS_OFF;
15244 connector->base.encoder = NULL;
15246 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
15247 connector->base.base.id,
15248 connector->base.name,
15249 connector->base.encoder ? "enabled" : "disabled");
15252 for_each_intel_crtc(dev, crtc) {
15253 crtc->base.hwmode = crtc->config->base.adjusted_mode;
15255 memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
15256 if (crtc->base.state->active) {
15257 intel_mode_from_pipe_config(&crtc->base.mode, crtc->config);
15258 intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config);
15259 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
15262 * The initial mode needs to be set in order to keep
15263 * the atomic core happy. It wants a valid mode if the
15264 * crtc's enabled, so we do the above call.
15266 * At this point some state updated by the connectors
15267 * in their ->detect() callback has not run yet, so
15268 * no recalculation can be done yet.
15270 * Even if we could do a recalculation and modeset
15271 * right now it would cause a double modeset if
15272 * fbdev or userspace chooses a different initial mode.
15274 * If that happens, someone indicated they wanted a
15275 * mode change, which means it's safe to do a full
15278 crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED;
15280 drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
15281 update_scanline_offset(crtc);
15286 /* Scan out the current hw modeset state,
15287 * and sanitizes it to the current state
15290 intel_modeset_setup_hw_state(struct drm_device *dev)
15292 struct drm_i915_private *dev_priv = dev->dev_private;
15294 struct intel_crtc *crtc;
15295 struct intel_encoder *encoder;
15298 intel_modeset_readout_hw_state(dev);
15300 /* HW state is read out, now we need to sanitize this mess. */
15301 for_each_intel_encoder(dev, encoder) {
15302 intel_sanitize_encoder(encoder);
15305 for_each_pipe(dev_priv, pipe) {
15306 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15307 intel_sanitize_crtc(crtc);
15308 intel_dump_pipe_config(crtc, crtc->config,
15309 "[setup_hw_state]");
15312 intel_modeset_update_connector_atomic_state(dev);
15314 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15315 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15317 if (!pll->on || pll->active)
15320 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
15322 pll->disable(dev_priv, pll);
15326 if (IS_VALLEYVIEW(dev))
15327 vlv_wm_get_hw_state(dev);
15328 else if (IS_GEN9(dev))
15329 skl_wm_get_hw_state(dev);
15330 else if (HAS_PCH_SPLIT(dev))
15331 ilk_wm_get_hw_state(dev);
15333 for_each_intel_crtc(dev, crtc) {
15334 unsigned long put_domains;
15336 put_domains = modeset_get_crtc_power_domains(&crtc->base);
15337 if (WARN_ON(put_domains))
15338 modeset_put_power_domains(dev_priv, put_domains);
15340 intel_display_set_init_power(dev_priv, false);
15343 void intel_display_resume(struct drm_device *dev)
15345 struct drm_atomic_state *state = drm_atomic_state_alloc(dev);
15346 struct intel_connector *conn;
15347 struct intel_plane *plane;
15348 struct drm_crtc *crtc;
15354 state->acquire_ctx = dev->mode_config.acquire_ctx;
15356 /* preserve complete old state, including dpll */
15357 intel_atomic_get_shared_dpll_state(state);
15359 for_each_crtc(dev, crtc) {
15360 struct drm_crtc_state *crtc_state =
15361 drm_atomic_get_crtc_state(state, crtc);
15363 ret = PTR_ERR_OR_ZERO(crtc_state);
15367 /* force a restore */
15368 crtc_state->mode_changed = true;
15371 for_each_intel_plane(dev, plane) {
15372 ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(state, &plane->base));
15377 for_each_intel_connector(dev, conn) {
15378 ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(state, &conn->base));
15383 intel_modeset_setup_hw_state(dev);
15385 i915_redisable_vga(dev);
15386 ret = drm_atomic_commit(state);
15391 DRM_ERROR("Restoring old state failed with %i\n", ret);
15392 drm_atomic_state_free(state);
15395 void intel_modeset_gem_init(struct drm_device *dev)
15397 struct drm_crtc *c;
15398 struct drm_i915_gem_object *obj;
15401 mutex_lock(&dev->struct_mutex);
15402 intel_init_gt_powersave(dev);
15403 mutex_unlock(&dev->struct_mutex);
15405 intel_modeset_init_hw(dev);
15407 intel_setup_overlay(dev);
15410 * Make sure any fbs we allocated at startup are properly
15411 * pinned & fenced. When we do the allocation it's too early
15414 for_each_crtc(dev, c) {
15415 obj = intel_fb_obj(c->primary->fb);
15419 mutex_lock(&dev->struct_mutex);
15420 ret = intel_pin_and_fence_fb_obj(c->primary,
15424 mutex_unlock(&dev->struct_mutex);
15426 DRM_ERROR("failed to pin boot fb on pipe %d\n",
15427 to_intel_crtc(c)->pipe);
15428 drm_framebuffer_unreference(c->primary->fb);
15429 c->primary->fb = NULL;
15430 c->primary->crtc = c->primary->state->crtc = NULL;
15431 update_state_fb(c->primary);
15432 c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
15436 intel_backlight_register(dev);
15439 void intel_connector_unregister(struct intel_connector *intel_connector)
15441 struct drm_connector *connector = &intel_connector->base;
15443 intel_panel_destroy_backlight(connector);
15444 drm_connector_unregister(connector);
15447 void intel_modeset_cleanup(struct drm_device *dev)
15449 struct drm_i915_private *dev_priv = dev->dev_private;
15450 struct drm_connector *connector;
15452 intel_disable_gt_powersave(dev);
15454 intel_backlight_unregister(dev);
15457 * Interrupts and polling as the first thing to avoid creating havoc.
15458 * Too much stuff here (turning of connectors, ...) would
15459 * experience fancy races otherwise.
15461 intel_irq_uninstall(dev_priv);
15464 * Due to the hpd irq storm handling the hotplug work can re-arm the
15465 * poll handlers. Hence disable polling after hpd handling is shut down.
15467 drm_kms_helper_poll_fini(dev);
15469 intel_unregister_dsm_handler();
15471 intel_fbc_disable(dev_priv);
15473 /* flush any delayed tasks or pending work */
15474 flush_scheduled_work();
15476 /* destroy the backlight and sysfs files before encoders/connectors */
15477 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
15478 struct intel_connector *intel_connector;
15480 intel_connector = to_intel_connector(connector);
15481 intel_connector->unregister(intel_connector);
15484 drm_mode_config_cleanup(dev);
15486 intel_cleanup_overlay(dev);
15488 mutex_lock(&dev->struct_mutex);
15489 intel_cleanup_gt_powersave(dev);
15490 mutex_unlock(&dev->struct_mutex);
15494 * Return which encoder is currently attached for connector.
15496 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
15498 return &intel_attached_encoder(connector)->base;
15501 void intel_connector_attach_encoder(struct intel_connector *connector,
15502 struct intel_encoder *encoder)
15504 connector->encoder = encoder;
15505 drm_mode_connector_attach_encoder(&connector->base,
15510 * set vga decode state - true == enable VGA decode
15512 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
15514 struct drm_i915_private *dev_priv = dev->dev_private;
15515 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
15518 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
15519 DRM_ERROR("failed to read control word\n");
15523 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
15527 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
15529 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
15531 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
15532 DRM_ERROR("failed to write control word\n");
15539 struct intel_display_error_state {
15541 u32 power_well_driver;
15543 int num_transcoders;
15545 struct intel_cursor_error_state {
15550 } cursor[I915_MAX_PIPES];
15552 struct intel_pipe_error_state {
15553 bool power_domain_on;
15556 } pipe[I915_MAX_PIPES];
15558 struct intel_plane_error_state {
15566 } plane[I915_MAX_PIPES];
15568 struct intel_transcoder_error_state {
15569 bool power_domain_on;
15570 enum transcoder cpu_transcoder;
15583 struct intel_display_error_state *
15584 intel_display_capture_error_state(struct drm_device *dev)
15586 struct drm_i915_private *dev_priv = dev->dev_private;
15587 struct intel_display_error_state *error;
15588 int transcoders[] = {
15596 if (INTEL_INFO(dev)->num_pipes == 0)
15599 error = kzalloc(sizeof(*error), GFP_ATOMIC);
15603 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15604 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
15606 for_each_pipe(dev_priv, i) {
15607 error->pipe[i].power_domain_on =
15608 __intel_display_power_is_enabled(dev_priv,
15609 POWER_DOMAIN_PIPE(i));
15610 if (!error->pipe[i].power_domain_on)
15613 error->cursor[i].control = I915_READ(CURCNTR(i));
15614 error->cursor[i].position = I915_READ(CURPOS(i));
15615 error->cursor[i].base = I915_READ(CURBASE(i));
15617 error->plane[i].control = I915_READ(DSPCNTR(i));
15618 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
15619 if (INTEL_INFO(dev)->gen <= 3) {
15620 error->plane[i].size = I915_READ(DSPSIZE(i));
15621 error->plane[i].pos = I915_READ(DSPPOS(i));
15623 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15624 error->plane[i].addr = I915_READ(DSPADDR(i));
15625 if (INTEL_INFO(dev)->gen >= 4) {
15626 error->plane[i].surface = I915_READ(DSPSURF(i));
15627 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
15630 error->pipe[i].source = I915_READ(PIPESRC(i));
15632 if (HAS_GMCH_DISPLAY(dev))
15633 error->pipe[i].stat = I915_READ(PIPESTAT(i));
15636 error->num_transcoders = INTEL_INFO(dev)->num_pipes;
15637 if (HAS_DDI(dev_priv->dev))
15638 error->num_transcoders++; /* Account for eDP. */
15640 for (i = 0; i < error->num_transcoders; i++) {
15641 enum transcoder cpu_transcoder = transcoders[i];
15643 error->transcoder[i].power_domain_on =
15644 __intel_display_power_is_enabled(dev_priv,
15645 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
15646 if (!error->transcoder[i].power_domain_on)
15649 error->transcoder[i].cpu_transcoder = cpu_transcoder;
15651 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
15652 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
15653 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
15654 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
15655 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
15656 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
15657 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
15663 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
15666 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
15667 struct drm_device *dev,
15668 struct intel_display_error_state *error)
15670 struct drm_i915_private *dev_priv = dev->dev_private;
15676 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
15677 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15678 err_printf(m, "PWR_WELL_CTL2: %08x\n",
15679 error->power_well_driver);
15680 for_each_pipe(dev_priv, i) {
15681 err_printf(m, "Pipe [%d]:\n", i);
15682 err_printf(m, " Power: %s\n",
15683 error->pipe[i].power_domain_on ? "on" : "off");
15684 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
15685 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
15687 err_printf(m, "Plane [%d]:\n", i);
15688 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
15689 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
15690 if (INTEL_INFO(dev)->gen <= 3) {
15691 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
15692 err_printf(m, " POS: %08x\n", error->plane[i].pos);
15694 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15695 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
15696 if (INTEL_INFO(dev)->gen >= 4) {
15697 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
15698 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
15701 err_printf(m, "Cursor [%d]:\n", i);
15702 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
15703 err_printf(m, " POS: %08x\n", error->cursor[i].position);
15704 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
15707 for (i = 0; i < error->num_transcoders; i++) {
15708 err_printf(m, "CPU transcoder: %c\n",
15709 transcoder_name(error->transcoder[i].cpu_transcoder));
15710 err_printf(m, " Power: %s\n",
15711 error->transcoder[i].power_domain_on ? "on" : "off");
15712 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
15713 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
15714 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
15715 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
15716 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
15717 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
15718 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
15722 void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
15724 struct intel_crtc *crtc;
15726 for_each_intel_crtc(dev, crtc) {
15727 struct intel_unpin_work *work;
15729 spin_lock_irq(&dev->event_lock);
15731 work = crtc->unpin_work;
15733 if (work && work->event &&
15734 work->event->base.file_priv == file) {
15735 kfree(work->event);
15736 work->event = NULL;
15739 spin_unlock_irq(&dev->event_lock);