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drm/nouveau: Never evict VRAM buffers to system.
[linux-2.6-block.git] / drivers / gpu / drm / nouveau / nouveau_connector.c
CommitLineData
6ee73861
BS		 1/*
2 * Copyright (C) 2008 Maarten Maathuis.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
a1470890
BS		 27#include <acpi/button.h>
28
6ee73861
BS		 29#include "drmP.h"
30#include "drm_edid.h"
31#include "drm_crtc_helper.h"
a1470890 32
6ee73861
BS		 33#include "nouveau_reg.h"
34#include "nouveau_drv.h"
35#include "nouveau_encoder.h"
36#include "nouveau_crtc.h"
37#include "nouveau_connector.h"
38#include "nouveau_hw.h"
39
40static inline struct drm_encoder_slave_funcs *
41get_slave_funcs(struct nouveau_encoder *enc)
42{
43 return to_encoder_slave(to_drm_encoder(enc))->slave_funcs;
44}
45
46static struct nouveau_encoder *
47find_encoder_by_type(struct drm_connector *connector, int type)
48{
49 struct drm_device *dev = connector->dev;
50 struct nouveau_encoder *nv_encoder;
51 struct drm_mode_object *obj;
52 int i, id;
53
54 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
55 id = connector->encoder_ids[i];
56 if (!id)
57 break;
58
59 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
60 if (!obj)
61 continue;
62 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
63
64 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
65 return nv_encoder;
66 }
67
68 return NULL;
69}
70
71struct nouveau_connector *
72nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
73{
74 struct drm_device *dev = to_drm_encoder(encoder)->dev;
75 struct drm_connector *drm_connector;
76
77 list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
78 if (drm_connector->encoder == to_drm_encoder(encoder))
79 return nouveau_connector(drm_connector);
80 }
81
82 return NULL;
83}
84
85
86static void
87nouveau_connector_destroy(struct drm_connector *drm_connector)
88{
c8ebe275
XC		 89 struct nouveau_connector *nv_connector =
90 nouveau_connector(drm_connector);
dd19e44b 91 struct drm_device *dev;
6ee73861 92
c8ebe275 93 if (!nv_connector)
6ee73861
BS		 94 return;
95
dd19e44b
MS		 96 dev = nv_connector->base.dev;
97 NV_DEBUG_KMS(dev, "\n");
98
c8ebe275 99 kfree(nv_connector->edid);
6ee73861
BS		 100 drm_sysfs_connector_remove(drm_connector);
101 drm_connector_cleanup(drm_connector);
102 kfree(drm_connector);
103}
104
105static void
106nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags)
107{
108 struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
109
110 if (dev_priv->card_type >= NV_50)
111 return;
112
113 *flags = 0;
114 if (NVLockVgaCrtcs(dev_priv->dev, false))
115 *flags |= 1;
116 if (nv_heads_tied(dev_priv->dev))
117 *flags |= 2;
118
119 if (*flags & 2)
120 NVSetOwner(dev_priv->dev, 0); /* necessary? */
121}
122
123static void
124nouveau_connector_ddc_finish(struct drm_connector *connector, int flags)
125{
126 struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
127
128 if (dev_priv->card_type >= NV_50)
129 return;
130
131 if (flags & 2)
132 NVSetOwner(dev_priv->dev, 4);
133 if (flags & 1)
134 NVLockVgaCrtcs(dev_priv->dev, true);
135}
136
137static struct nouveau_i2c_chan *
138nouveau_connector_ddc_detect(struct drm_connector *connector,
139 struct nouveau_encoder **pnv_encoder)
140{
141 struct drm_device *dev = connector->dev;
142 uint8_t out_buf[] = { 0x0, 0x0}, buf[2];
143 int ret, flags, i;
144
145 struct i2c_msg msgs[] = {
146 {
147 .addr = 0x50,
148 .flags = 0,
149 .len = 1,
150 .buf = out_buf,
151 },
152 {
153 .addr = 0x50,
154 .flags = I2C_M_RD,
155 .len = 1,
156 .buf = buf,
157 }
158 };
159
160 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
161 struct nouveau_i2c_chan *i2c = NULL;
162 struct nouveau_encoder *nv_encoder;
163 struct drm_mode_object *obj;
164 int id;
165
166 id = connector->encoder_ids[i];
167 if (!id)
168 break;
169
170 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
171 if (!obj)
172 continue;
173 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
174
175 if (nv_encoder->dcb->i2c_index < 0xf)
176 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
177 if (!i2c)
178 continue;
179
180 nouveau_connector_ddc_prepare(connector, &flags);
181 ret = i2c_transfer(&i2c->adapter, msgs, 2);
182 nouveau_connector_ddc_finish(connector, flags);
183
184 if (ret == 2) {
185 *pnv_encoder = nv_encoder;
186 return i2c;
187 }
188 }
189
190 return NULL;
191}
192
193static void
194nouveau_connector_set_encoder(struct drm_connector *connector,
195 struct nouveau_encoder *nv_encoder)
196{
197 struct nouveau_connector *nv_connector = nouveau_connector(connector);
198 struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
199 struct drm_device *dev = connector->dev;
200
201 if (nv_connector->detected_encoder == nv_encoder)
202 return;
203 nv_connector->detected_encoder = nv_encoder;
204
205 if (nv_encoder->dcb->type == OUTPUT_LVDS ||
206 nv_encoder->dcb->type == OUTPUT_TMDS) {
207 connector->doublescan_allowed = false;
208 connector->interlace_allowed = false;
209 } else {
210 connector->doublescan_allowed = true;
211 if (dev_priv->card_type == NV_20 ||
212 (dev_priv->card_type == NV_10 &&
213 (dev->pci_device & 0x0ff0) != 0x0100 &&
214 (dev->pci_device & 0x0ff0) != 0x0150))
215 /* HW is broken */
216 connector->interlace_allowed = false;
217 else
218 connector->interlace_allowed = true;
219 }
220
be079e97 221 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
6ee73861
BS		 222 drm_connector_property_set_value(connector,
223 dev->mode_config.dvi_i_subconnector_property,
224 nv_encoder->dcb->type == OUTPUT_TMDS ?
225 DRM_MODE_SUBCONNECTOR_DVID :
226 DRM_MODE_SUBCONNECTOR_DVIA);
227 }
228}
229
230static enum drm_connector_status
231nouveau_connector_detect(struct drm_connector *connector)
232{
233 struct drm_device *dev = connector->dev;
234 struct nouveau_connector *nv_connector = nouveau_connector(connector);
235 struct nouveau_encoder *nv_encoder = NULL;
236 struct nouveau_i2c_chan *i2c;
237 int type, flags;
238
be079e97 239 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS)
6ee73861
BS		 240 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
241 if (nv_encoder && nv_connector->native_mode) {
b30083bd
BS		 242 unsigned status = connector_status_connected;
243
a1470890
BS		 244#ifdef CONFIG_ACPI
245 if (!nouveau_ignorelid && !acpi_lid_open())
b30083bd 246 status = connector_status_unknown;
a1470890 247#endif
6ee73861 248 nouveau_connector_set_encoder(connector, nv_encoder);
b30083bd 249 return status;
6ee73861
BS		 250 }
251
b8780e2a
FJ		 252 /* Cleanup the previous EDID block. */
253 if (nv_connector->edid) {
254 drm_mode_connector_update_edid_property(connector, NULL);
255 kfree(nv_connector->edid);
256 nv_connector->edid = NULL;
257 }
c8ebe275 258
6ee73861
BS		 259 i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
260 if (i2c) {
261 nouveau_connector_ddc_prepare(connector, &flags);
262 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
263 nouveau_connector_ddc_finish(connector, flags);
264 drm_mode_connector_update_edid_property(connector,
265 nv_connector->edid);
266 if (!nv_connector->edid) {
267 NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
268 drm_get_connector_name(connector));
0ed3165e 269 goto detect_analog;
6ee73861
BS		 270 }
271
272 if (nv_encoder->dcb->type == OUTPUT_DP &&
273 !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
274 NV_ERROR(dev, "Detected %s, but failed init\n",
275 drm_get_connector_name(connector));
276 return connector_status_disconnected;
277 }
278
279 /* Override encoder type for DVI-I based on whether EDID
280 * says the display is digital or analog, both use the
281 * same i2c channel so the value returned from ddc_detect
282 * isn't necessarily correct.
283 */
be079e97 284 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
6ee73861
BS		 285 if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
286 type = OUTPUT_TMDS;
287 else
288 type = OUTPUT_ANALOG;
289
290 nv_encoder = find_encoder_by_type(connector, type);
291 if (!nv_encoder) {
292 NV_ERROR(dev, "Detected %d encoder on %s, "
293 "but no object!\n", type,
294 drm_get_connector_name(connector));
295 return connector_status_disconnected;
296 }
297 }
298
299 nouveau_connector_set_encoder(connector, nv_encoder);
300 return connector_status_connected;
301 }
302
0ed3165e 303detect_analog:
6ee73861
BS		 304 nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
305 if (!nv_encoder)
306 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
307 if (nv_encoder) {
308 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
309 struct drm_encoder_helper_funcs *helper =
310 encoder->helper_private;
311
312 if (helper->detect(encoder, connector) ==
313 connector_status_connected) {
314 nouveau_connector_set_encoder(connector, nv_encoder);
315 return connector_status_connected;
316 }
317
318 }
319
320 return connector_status_disconnected;
321}
322
323static void
324nouveau_connector_force(struct drm_connector *connector)
325{
be079e97 326 struct nouveau_connector *nv_connector = nouveau_connector(connector);
6ee73861
BS		 327 struct nouveau_encoder *nv_encoder;
328 int type;
329
be079e97 330 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
6ee73861
BS		 331 if (connector->force == DRM_FORCE_ON_DIGITAL)
332 type = OUTPUT_TMDS;
333 else
334 type = OUTPUT_ANALOG;
335 } else
336 type = OUTPUT_ANY;
337
338 nv_encoder = find_encoder_by_type(connector, type);
339 if (!nv_encoder) {
be079e97 340 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
6ee73861
BS		 341 drm_get_connector_name(connector));
342 connector->status = connector_status_disconnected;
343 return;
344 }
345
346 nouveau_connector_set_encoder(connector, nv_encoder);
347}
348
349static int
350nouveau_connector_set_property(struct drm_connector *connector,
351 struct drm_property *property, uint64_t value)
352{
353 struct nouveau_connector *nv_connector = nouveau_connector(connector);
354 struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
355 struct drm_device *dev = connector->dev;
356 int ret;
357
358 /* Scaling mode */
359 if (property == dev->mode_config.scaling_mode_property) {
360 struct nouveau_crtc *nv_crtc = NULL;
361 bool modeset = false;
362
363 switch (value) {
364 case DRM_MODE_SCALE_NONE:
365 case DRM_MODE_SCALE_FULLSCREEN:
366 case DRM_MODE_SCALE_CENTER:
367 case DRM_MODE_SCALE_ASPECT:
368 break;
369 default:
370 return -EINVAL;
371 }
372
373 /* LVDS always needs gpu scaling */
be079e97 374 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
6ee73861
BS		 375 value == DRM_MODE_SCALE_NONE)
376 return -EINVAL;
377
378 /* Changing between GPU and panel scaling requires a full
379 * modeset
380 */
381 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
382 (value == DRM_MODE_SCALE_NONE))
383 modeset = true;
384 nv_connector->scaling_mode = value;
385
386 if (connector->encoder && connector->encoder->crtc)
387 nv_crtc = nouveau_crtc(connector->encoder->crtc);
388 if (!nv_crtc)
389 return 0;
390
391 if (modeset || !nv_crtc->set_scale) {
392 ret = drm_crtc_helper_set_mode(&nv_crtc->base,
393 &nv_crtc->base.mode,
394 nv_crtc->base.x,
395 nv_crtc->base.y, NULL);
396 if (!ret)
397 return -EINVAL;
398 } else {
399 ret = nv_crtc->set_scale(nv_crtc, value, true);
400 if (ret)
401 return ret;
402 }
403
404 return 0;
405 }
406
407 /* Dithering */
408 if (property == dev->mode_config.dithering_mode_property) {
409 struct nouveau_crtc *nv_crtc = NULL;
410
411 if (value == DRM_MODE_DITHERING_ON)
412 nv_connector->use_dithering = true;
413 else
414 nv_connector->use_dithering = false;
415
416 if (connector->encoder && connector->encoder->crtc)
417 nv_crtc = nouveau_crtc(connector->encoder->crtc);
418
419 if (!nv_crtc || !nv_crtc->set_dither)
420 return 0;
421
422 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
423 true);
424 }
425
426 if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
427 return get_slave_funcs(nv_encoder)->
428 set_property(to_drm_encoder(nv_encoder), connector, property, value);
429
430 return -EINVAL;
431}
432
433static struct drm_display_mode *
434nouveau_connector_native_mode(struct nouveau_connector *connector)
435{
436 struct drm_device *dev = connector->base.dev;
437 struct drm_display_mode *mode, *largest = NULL;
438 int high_w = 0, high_h = 0, high_v = 0;
439
440 /* Use preferred mode if there is one.. */
441 list_for_each_entry(mode, &connector->base.probed_modes, head) {
442 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
ef2bb506 443 NV_DEBUG_KMS(dev, "native mode from preferred\n");
6ee73861
BS		 444 return drm_mode_duplicate(dev, mode);
445 }
446 }
447
448 /* Otherwise, take the resolution with the largest width, then height,
449 * then vertical refresh
450 */
451 list_for_each_entry(mode, &connector->base.probed_modes, head) {
452 if (mode->hdisplay < high_w)
453 continue;
454
455 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
456 continue;
457
458 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
459 mode->vrefresh < high_v)
460 continue;
461
462 high_w = mode->hdisplay;
463 high_h = mode->vdisplay;
464 high_v = mode->vrefresh;
465 largest = mode;
466 }
467
ef2bb506 468 NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
6ee73861
BS		 469 high_w, high_h, high_v);
470 return largest ? drm_mode_duplicate(dev, largest) : NULL;
471}
472
473struct moderec {
474 int hdisplay;
475 int vdisplay;
476};
477
478static struct moderec scaler_modes[] = {
479 { 1920, 1200 },
480 { 1920, 1080 },
481 { 1680, 1050 },
482 { 1600, 1200 },
483 { 1400, 1050 },
484 { 1280, 1024 },
485 { 1280, 960 },
486 { 1152, 864 },
487 { 1024, 768 },
488 { 800, 600 },
489 { 720, 400 },
490 { 640, 480 },
491 { 640, 400 },
492 { 640, 350 },
493 {}
494};
495
496static int
497nouveau_connector_scaler_modes_add(struct drm_connector *connector)
498{
499 struct nouveau_connector *nv_connector = nouveau_connector(connector);
500 struct drm_display_mode *native = nv_connector->native_mode, *m;
501 struct drm_device *dev = connector->dev;
502 struct moderec *mode = &scaler_modes[0];
503 int modes = 0;
504
505 if (!native)
506 return 0;
507
508 while (mode->hdisplay) {
509 if (mode->hdisplay <= native->hdisplay &&
510 mode->vdisplay <= native->vdisplay) {
511 m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
512 drm_mode_vrefresh(native), false,
513 false, false);
514 if (!m)
515 continue;
516
517 m->type |= DRM_MODE_TYPE_DRIVER;
518
519 drm_mode_probed_add(connector, m);
520 modes++;
521 }
522
523 mode++;
524 }
525
526 return modes;
527}
528
529static int
530nouveau_connector_get_modes(struct drm_connector *connector)
531{
532 struct drm_device *dev = connector->dev;
533 struct nouveau_connector *nv_connector = nouveau_connector(connector);
534 struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
535 int ret = 0;
536
537 /* If we're not LVDS, destroy the previous native mode, the attached
538 * monitor could have changed.
539 */
be079e97 540 if (nv_connector->dcb->type != DCB_CONNECTOR_LVDS &&
6ee73861
BS		 541 nv_connector->native_mode) {
542 drm_mode_destroy(dev, nv_connector->native_mode);
543 nv_connector->native_mode = NULL;
544 }
545
546 if (nv_connector->edid)
547 ret = drm_add_edid_modes(connector, nv_connector->edid);
548
549 /* Find the native mode if this is a digital panel, if we didn't
550 * find any modes through DDC previously add the native mode to
551 * the list of modes.
552 */
553 if (!nv_connector->native_mode)
554 nv_connector->native_mode =
555 nouveau_connector_native_mode(nv_connector);
556 if (ret == 0 && nv_connector->native_mode) {
557 struct drm_display_mode *mode;
558
559 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
560 drm_mode_probed_add(connector, mode);
561 ret = 1;
562 }
563
564 if (nv_encoder->dcb->type == OUTPUT_TV)
565 ret = get_slave_funcs(nv_encoder)->
566 get_modes(to_drm_encoder(nv_encoder), connector);
567
be079e97 568 if (nv_encoder->dcb->type == OUTPUT_LVDS)
6ee73861
BS		 569 ret += nouveau_connector_scaler_modes_add(connector);
570
571 return ret;
572}
573
574static int
575nouveau_connector_mode_valid(struct drm_connector *connector,
576 struct drm_display_mode *mode)
577{
578 struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
579 struct nouveau_connector *nv_connector = nouveau_connector(connector);
580 struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
581 unsigned min_clock = 25000, max_clock = min_clock;
582 unsigned clock = mode->clock;
583
584 switch (nv_encoder->dcb->type) {
585 case OUTPUT_LVDS:
586 BUG_ON(!nv_connector->native_mode);
587 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
588 mode->vdisplay > nv_connector->native_mode->vdisplay)
589 return MODE_PANEL;
590
591 min_clock = 0;
592 max_clock = 400000;
593 break;
594 case OUTPUT_TMDS:
595 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
596 (dev_priv->card_type < NV_50 &&
597 !nv_encoder->dcb->duallink_possible))
598 max_clock = 165000;
599 else
600 max_clock = 330000;
601 break;
602 case OUTPUT_ANALOG:
603 max_clock = nv_encoder->dcb->crtconf.maxfreq;
604 if (!max_clock)
605 max_clock = 350000;
606 break;
607 case OUTPUT_TV:
608 return get_slave_funcs(nv_encoder)->
609 mode_valid(to_drm_encoder(nv_encoder), mode);
610 case OUTPUT_DP:
611 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
612 max_clock = nv_encoder->dp.link_nr * 270000;
613 else
614 max_clock = nv_encoder->dp.link_nr * 162000;
615
616 clock *= 3;
617 break;
e7cc51c5
BS		 618 default:
619 BUG_ON(1);
620 return MODE_BAD;
6ee73861
BS		 621 }
622
623 if (clock < min_clock)
624 return MODE_CLOCK_LOW;
625
626 if (clock > max_clock)
627 return MODE_CLOCK_HIGH;
628
629 return MODE_OK;
630}
631
632static struct drm_encoder *
633nouveau_connector_best_encoder(struct drm_connector *connector)
634{
635 struct nouveau_connector *nv_connector = nouveau_connector(connector);
636
637 if (nv_connector->detected_encoder)
638 return to_drm_encoder(nv_connector->detected_encoder);
639
640 return NULL;
641}
642
643static const struct drm_connector_helper_funcs
644nouveau_connector_helper_funcs = {
645 .get_modes = nouveau_connector_get_modes,
646 .mode_valid = nouveau_connector_mode_valid,
647 .best_encoder = nouveau_connector_best_encoder,
648};
649
650static const struct drm_connector_funcs
651nouveau_connector_funcs = {
652 .dpms = drm_helper_connector_dpms,
653 .save = NULL,
654 .restore = NULL,
655 .detect = nouveau_connector_detect,
656 .destroy = nouveau_connector_destroy,
657 .fill_modes = drm_helper_probe_single_connector_modes,
658 .set_property = nouveau_connector_set_property,
659 .force = nouveau_connector_force
660};
661
662static int
663nouveau_connector_create_lvds(struct drm_device *dev,
664 struct drm_connector *connector)
665{
666 struct nouveau_connector *nv_connector = nouveau_connector(connector);
667 struct drm_nouveau_private *dev_priv = dev->dev_private;
668 struct nouveau_i2c_chan *i2c = NULL;
669 struct nouveau_encoder *nv_encoder;
670 struct drm_display_mode native, *mode, *temp;
671 bool dummy, if_is_24bit = false;
672 int ret, flags;
673
674 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
675 if (!nv_encoder)
676 return -ENODEV;
677
678 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
679 if (ret) {
680 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
681 return ret;
682 }
683 nv_connector->use_dithering = !if_is_24bit;
684
685 /* Firstly try getting EDID over DDC, if allowed and I2C channel
686 * is available.
687 */
04a39c57 688 if (!dev_priv->vbios.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
6ee73861
BS		 689 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
690
691 if (i2c) {
692 nouveau_connector_ddc_prepare(connector, &flags);
693 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
694 nouveau_connector_ddc_finish(connector, flags);
695 }
696
697 /* If no EDID found above, and the VBIOS indicates a hardcoded
698 * modeline is avalilable for the panel, set it as the panel's
699 * native mode and exit.
700 */
701 if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
702 (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
04a39c57 703 dev_priv->vbios.fp_no_ddc)) {
6ee73861
BS		 704 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
705 goto out;
706 }
707
708 /* Still nothing, some VBIOS images have a hardcoded EDID block
709 * stored for the panel stored in them.
710 */
711 if (!nv_connector->edid && !nv_connector->native_mode &&
04a39c57 712 !dev_priv->vbios.fp_no_ddc) {
c8ebe275 713 struct edid *edid =
6ee73861 714 (struct edid *)nouveau_bios_embedded_edid(dev);
c8ebe275
XC		 715 if (edid) {
716 nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
717 *(nv_connector->edid) = *edid;
718 }
6ee73861
BS		 719 }
720
721 if (!nv_connector->edid)
722 goto out;
723
724 /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
725 * block and look for the preferred mode there.
726 */
727 ret = drm_add_edid_modes(connector, nv_connector->edid);
728 if (ret == 0)
729 goto out;
730 nv_connector->detected_encoder = nv_encoder;
731 nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
732 list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
733 drm_mode_remove(connector, mode);
734
735out:
736 if (!nv_connector->native_mode) {
737 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
738 "determine its native mode. Disabling.\n");
739 return -ENODEV;
740 }
741
742 drm_mode_connector_update_edid_property(connector, nv_connector->edid);
743 return 0;
744}
745
746int
7f612d87
BS		 747nouveau_connector_create(struct drm_device *dev,
748 struct dcb_connector_table_entry *dcb)
6ee73861
BS		 749{
750 struct drm_nouveau_private *dev_priv = dev->dev_private;
751 struct nouveau_connector *nv_connector = NULL;
752 struct drm_connector *connector;
753 struct drm_encoder *encoder;
7f612d87 754 int ret, type;
6ee73861 755
ef2bb506 756 NV_DEBUG_KMS(dev, "\n");
6ee73861 757
7f612d87
BS		 758 switch (dcb->type) {
759 case DCB_CONNECTOR_NONE:
760 return 0;
761 case DCB_CONNECTOR_VGA:
6ee73861 762 NV_INFO(dev, "Detected a VGA connector\n");
7f612d87 763 type = DRM_MODE_CONNECTOR_VGA;
6ee73861 764 break;
7f612d87
BS		 765 case DCB_CONNECTOR_TV_0:
766 case DCB_CONNECTOR_TV_1:
767 case DCB_CONNECTOR_TV_3:
768 NV_INFO(dev, "Detected a TV connector\n");
769 type = DRM_MODE_CONNECTOR_TV;
6ee73861 770 break;
7f612d87 771 case DCB_CONNECTOR_DVI_I:
6ee73861 772 NV_INFO(dev, "Detected a DVI-I connector\n");
7f612d87 773 type = DRM_MODE_CONNECTOR_DVII;
6ee73861 774 break;
7f612d87 775 case DCB_CONNECTOR_DVI_D:
7f612d87
BS		 776 NV_INFO(dev, "Detected a DVI-D connector\n");
777 type = DRM_MODE_CONNECTOR_DVID;
6ee73861 778 break;
be079e97
BS		 779 case DCB_CONNECTOR_HDMI_0:
780 case DCB_CONNECTOR_HDMI_1:
781 NV_INFO(dev, "Detected a HDMI connector\n");
782 type = DRM_MODE_CONNECTOR_HDMIA;
783 break;
7f612d87
BS		 784 case DCB_CONNECTOR_LVDS:
785 NV_INFO(dev, "Detected a LVDS connector\n");
786 type = DRM_MODE_CONNECTOR_LVDS;
6ee73861 787 break;
7f612d87 788 case DCB_CONNECTOR_DP:
6ee73861 789 NV_INFO(dev, "Detected a DisplayPort connector\n");
7f612d87 790 type = DRM_MODE_CONNECTOR_DisplayPort;
6ee73861 791 break;
be079e97
BS		 792 case DCB_CONNECTOR_eDP:
793 NV_INFO(dev, "Detected an eDP connector\n");
794 type = DRM_MODE_CONNECTOR_eDP;
795 break;
6ee73861 796 default:
7f612d87
BS		 797 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
798 return -EINVAL;
6ee73861
BS		 799 }
800
7f612d87
BS		 801 nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
802 if (!nv_connector)
803 return -ENOMEM;
804 nv_connector->dcb = dcb;
805 connector = &nv_connector->base;
806
6ee73861
BS		 807 /* defaults, will get overridden in detect() */
808 connector->interlace_allowed = false;
809 connector->doublescan_allowed = false;
810
811 drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
812 drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
813
7f612d87
BS		 814 /* attach encoders */
815 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
816 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
817
818 if (nv_encoder->dcb->connector != dcb->index)
819 continue;
820
821 if (get_slave_funcs(nv_encoder))
822 get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
823
824 drm_mode_connector_attach_encoder(connector, encoder);
825 }
826
827 if (!connector->encoder_ids[0]) {
828 NV_WARN(dev, " no encoders, ignoring\n");
829 drm_connector_cleanup(connector);
830 kfree(connector);
831 return 0;
832 }
833
6ee73861 834 /* Init DVI-I specific properties */
be079e97 835 if (dcb->type == DCB_CONNECTOR_DVI_I) {
6ee73861
BS		 836 drm_mode_create_dvi_i_properties(dev);
837 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
838 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
839 }
840
be079e97 841 if (dcb->type != DCB_CONNECTOR_LVDS)
6ee73861
BS		 842 nv_connector->use_dithering = false;
843
be079e97
BS		 844 switch (dcb->type) {
845 case DCB_CONNECTOR_VGA:
846 if (dev_priv->card_type >= NV_50) {
6ee73861
BS		 847 drm_connector_attach_property(connector,
848 dev->mode_config.scaling_mode_property,
849 nv_connector->scaling_mode);
850 }
be079e97
BS		 851 /* fall-through */
852 case DCB_CONNECTOR_TV_0:
853 case DCB_CONNECTOR_TV_1:
854 case DCB_CONNECTOR_TV_3:
855 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
856 break;
857 default:
858 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
859
860 drm_connector_attach_property(connector,
861 dev->mode_config.scaling_mode_property,
862 nv_connector->scaling_mode);
863 drm_connector_attach_property(connector,
864 dev->mode_config.dithering_mode_property,
865 nv_connector->use_dithering ?
866 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
867 break;
6ee73861
BS		 868 }
869
6ee73861
BS		 870 drm_sysfs_connector_add(connector);
871
be079e97 872 if (dcb->type == DCB_CONNECTOR_LVDS) {
6ee73861
BS		 873 ret = nouveau_connector_create_lvds(dev, connector);
874 if (ret) {
875 connector->funcs->destroy(connector);
876 return ret;
877 }
878 }
879
880 return 0;
881}
Linux 6.x block layer and io_uring tree(s)