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f453ba04 DA |
1 | /* |
2 | * Copyright © 2006 Keith Packard | |
3 | * Copyright © 2007-2008 Dave Airlie | |
4 | * Copyright © 2007-2008 Intel Corporation | |
5 | * Jesse Barnes <jesse.barnes@intel.com> | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a | |
8 | * copy of this software and associated documentation files (the "Software"), | |
9 | * to deal in the Software without restriction, including without limitation | |
10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
11 | * and/or sell copies of the Software, and to permit persons to whom the | |
12 | * Software is furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
23 | * OTHER DEALINGS IN THE SOFTWARE. | |
24 | */ | |
25 | #ifndef __DRM_CRTC_H__ | |
26 | #define __DRM_CRTC_H__ | |
27 | ||
28 | #include <linux/i2c.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/types.h> | |
f453ba04 | 31 | #include <linux/fb.h> |
985e5dc2 | 32 | #include <linux/hdmi.h> |
b5571e9d | 33 | #include <linux/media-bus-format.h> |
d7d2c48e DH |
34 | #include <uapi/drm/drm_mode.h> |
35 | #include <uapi/drm/drm_fourcc.h> | |
51fd371b | 36 | #include <drm/drm_modeset_lock.h> |
d7da824d | 37 | #include <drm/drm_rect.h> |
949619f3 | 38 | #include <drm/drm_mode_object.h> |
7520a277 DV |
39 | #include <drm/drm_framebuffer.h> |
40 | #include <drm/drm_modes.h> | |
52217195 | 41 | #include <drm/drm_connector.h> |
59e71ee7 | 42 | #include <drm/drm_property.h> |
199e4e96 | 43 | #include <drm/drm_bridge.h> |
cdc3d09f | 44 | #include <drm/drm_edid.h> |
43968d7b | 45 | #include <drm/drm_plane.h> |
18733802 | 46 | #include <drm/drm_blend.h> |
f1e2f66c | 47 | #include <drm/drm_color_mgmt.h> |
9edbf1fa | 48 | #include <drm/drm_debugfs_crc.h> |
28575f16 | 49 | #include <drm/drm_mode_config.h> |
308e5bcb | 50 | |
f453ba04 DA |
51 | struct drm_device; |
52 | struct drm_mode_set; | |
595887eb TR |
53 | struct drm_file; |
54 | struct drm_clip_rect; | |
fceffb32 | 55 | struct drm_printer; |
7e435aad | 56 | struct device_node; |
f54d1867 | 57 | struct dma_fence; |
81065548 | 58 | struct edid; |
f453ba04 | 59 | |
ebc44cf3 RC |
60 | static inline int64_t U642I64(uint64_t val) |
61 | { | |
62 | return (int64_t)*((int64_t *)&val); | |
63 | } | |
64 | static inline uint64_t I642U64(int64_t val) | |
65 | { | |
66 | return (uint64_t)*((uint64_t *)&val); | |
67 | } | |
68 | ||
f453ba04 | 69 | struct drm_crtc; |
d91d8a3f | 70 | struct drm_pending_vblank_event; |
8cf5c917 | 71 | struct drm_plane; |
3b336ec4 | 72 | struct drm_bridge; |
144ecb97 DV |
73 | struct drm_atomic_state; |
74 | ||
4490d4c7 | 75 | struct drm_crtc_helper_funcs; |
4490d4c7 DV |
76 | struct drm_plane_helper_funcs; |
77 | ||
144ecb97 | 78 | /** |
cc4ceb48 | 79 | * struct drm_crtc_state - mutable CRTC state |
07cc0ef6 | 80 | * @crtc: backpointer to the CRTC |
144ecb97 | 81 | * @enable: whether the CRTC should be enabled, gates all other state |
d9b13620 | 82 | * @active: whether the CRTC is actively displaying (used for DPMS) |
fc596660 | 83 | * @planes_changed: planes on this crtc are updated |
d574528a DV |
84 | * @mode_changed: @mode or @enable has been changed |
85 | * @active_changed: @active has been toggled. | |
fc596660 | 86 | * @connectors_changed: connectors to this crtc have been updated |
44d1240d | 87 | * @zpos_changed: zpos values of planes on this crtc have been updated |
5488dc16 LL |
88 | * @color_mgmt_changed: color management properties have changed (degamma or |
89 | * gamma LUT or CSC matrix) | |
6ddd388a | 90 | * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes |
4cd9fa52 | 91 | * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors |
e87a52b3 | 92 | * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached encoders |
2f324b42 | 93 | * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings |
144ecb97 | 94 | * @mode: current mode timings |
ac3ba4a5 | 95 | * @mode_blob: &drm_property_blob for @mode |
144ecb97 | 96 | * @state: backpointer to global drm_atomic_state |
d9b13620 DV |
97 | * |
98 | * Note that the distinction between @enable and @active is rather subtile: | |
99 | * Flipping @active while @enable is set without changing anything else may | |
d574528a DV |
100 | * never return in a failure from the &drm_mode_config_funcs.atomic_check |
101 | * callback. Userspace assumes that a DPMS On will always succeed. In other | |
102 | * words: @enable controls resource assignment, @active controls the actual | |
103 | * hardware state. | |
d807ed1c BS |
104 | * |
105 | * The three booleans active_changed, connectors_changed and mode_changed are | |
106 | * intended to indicate whether a full modeset is needed, rather than strictly | |
107 | * describing what has changed in a commit. | |
108 | * See also: drm_atomic_crtc_needs_modeset() | |
144ecb97 DV |
109 | */ |
110 | struct drm_crtc_state { | |
07cc0ef6 DV |
111 | struct drm_crtc *crtc; |
112 | ||
cc4ceb48 | 113 | bool enable; |
d9b13620 | 114 | bool active; |
144ecb97 | 115 | |
c2fcd274 DV |
116 | /* computed state bits used by helpers and drivers */ |
117 | bool planes_changed : 1; | |
623369e5 | 118 | bool mode_changed : 1; |
eab3bbef | 119 | bool active_changed : 1; |
fc596660 | 120 | bool connectors_changed : 1; |
44d1240d | 121 | bool zpos_changed : 1; |
5488dc16 | 122 | bool color_mgmt_changed : 1; |
623369e5 | 123 | |
6ddd388a RC |
124 | /* attached planes bitmask: |
125 | * WARNING: transitional helpers do not maintain plane_mask so | |
126 | * drivers not converted over to atomic helpers should not rely | |
127 | * on plane_mask being accurate! | |
128 | */ | |
129 | u32 plane_mask; | |
130 | ||
4cd9fa52 | 131 | u32 connector_mask; |
e87a52b3 | 132 | u32 encoder_mask; |
4cd9fa52 | 133 | |
2f324b42 DV |
134 | /* adjusted_mode: for use by helpers and drivers */ |
135 | struct drm_display_mode adjusted_mode; | |
136 | ||
144ecb97 DV |
137 | struct drm_display_mode mode; |
138 | ||
99cf4a29 DS |
139 | /* blob property to expose current mode to atomic userspace */ |
140 | struct drm_property_blob *mode_blob; | |
141 | ||
2e38178e DV |
142 | /** |
143 | * @degamma_lut: | |
144 | * | |
145 | * Lookup table for converting framebuffer pixel data before apply the | |
146 | * color conversion matrix @ctm. See drm_crtc_enable_color_mgmt(). The | |
147 | * blob (if not NULL) is an array of &struct drm_color_lut. | |
148 | */ | |
5488dc16 | 149 | struct drm_property_blob *degamma_lut; |
2e38178e DV |
150 | |
151 | /** | |
152 | * @ctm: | |
153 | * | |
154 | * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The | |
155 | * blob (if not NULL) is a &struct drm_color_ctm. | |
156 | */ | |
5488dc16 | 157 | struct drm_property_blob *ctm; |
2e38178e DV |
158 | |
159 | /** | |
160 | * @gamma_lut: | |
161 | * | |
162 | * Lookup table for converting pixel data after the color conversion | |
163 | * matrix @ctm. See drm_crtc_enable_color_mgmt(). The blob (if not | |
164 | * NULL) is an array of &struct drm_color_lut. | |
165 | */ | |
5488dc16 LL |
166 | struct drm_property_blob *gamma_lut; |
167 | ||
f869a6ec AG |
168 | /** |
169 | * @target_vblank: | |
170 | * | |
171 | * Target vertical blank period when a page flip | |
172 | * should take effect. | |
173 | */ | |
f869a6ec AG |
174 | u32 target_vblank; |
175 | ||
6cbe5c46 AG |
176 | /** |
177 | * @pageflip_flags: | |
178 | * | |
179 | * DRM_MODE_PAGE_FLIP_* flags, as passed to the page flip ioctl. | |
180 | * Zero in any other case. | |
181 | */ | |
182 | u32 pageflip_flags; | |
183 | ||
61802130 DV |
184 | /** |
185 | * @event: | |
186 | * | |
187 | * Optional pointer to a DRM event to signal upon completion of the | |
188 | * state update. The driver must send out the event when the atomic | |
189 | * commit operation completes. There are two cases: | |
190 | * | |
191 | * - The event is for a CRTC which is being disabled through this | |
192 | * atomic commit. In that case the event can be send out any time | |
193 | * after the hardware has stopped scanning out the current | |
194 | * framebuffers. It should contain the timestamp and counter for the | |
195 | * last vblank before the display pipeline was shut off. | |
196 | * | |
197 | * - For a CRTC which is enabled at the end of the commit (even when it | |
198 | * undergoes an full modeset) the vblank timestamp and counter must | |
199 | * be for the vblank right before the first frame that scans out the | |
200 | * new set of buffers. Again the event can only be sent out after the | |
201 | * hardware has stopped scanning out the old buffers. | |
202 | * | |
203 | * - Events for disabled CRTCs are not allowed, and drivers can ignore | |
204 | * that case. | |
205 | * | |
206 | * This can be handled by the drm_crtc_send_vblank_event() function, | |
207 | * which the driver should call on the provided event upon completion of | |
208 | * the atomic commit. Note that if the driver supports vblank signalling | |
209 | * and timestamping the vblank counters and timestamps must agree with | |
210 | * the ones returned from page flip events. With the current vblank | |
211 | * helper infrastructure this can be achieved by holding a vblank | |
212 | * reference while the page flip is pending, acquired through | |
213 | * drm_crtc_vblank_get() and released with drm_crtc_vblank_put(). | |
214 | * Drivers are free to implement their own vblank counter and timestamp | |
215 | * tracking though, e.g. if they have accurate timestamp registers in | |
216 | * hardware. | |
217 | * | |
218 | * For hardware which supports some means to synchronize vblank | |
219 | * interrupt delivery with committing display state there's also | |
220 | * drm_crtc_arm_vblank_event(). See the documentation of that function | |
221 | * for a detailed discussion of the constraints it needs to be used | |
222 | * safely. | |
66f8c100 DV |
223 | * |
224 | * If the device can't notify of flip completion in a race-free way | |
225 | * at all, then the event should be armed just after the page flip is | |
226 | * committed. In the worst case the driver will send the event to | |
227 | * userspace one frame too late. This doesn't allow for a real atomic | |
228 | * update, but it should avoid tearing. | |
61802130 | 229 | */ |
144ecb97 DV |
230 | struct drm_pending_vblank_event *event; |
231 | ||
232 | struct drm_atomic_state *state; | |
233 | }; | |
f453ba04 DA |
234 | |
235 | /** | |
3bf0401c | 236 | * struct drm_crtc_funcs - control CRTCs for a given device |
f453ba04 DA |
237 | * |
238 | * The drm_crtc_funcs structure is the central CRTC management structure | |
239 | * in the DRM. Each CRTC controls one or more connectors (note that the name | |
240 | * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. | |
241 | * connectors, not just CRTs). | |
242 | * | |
243 | * Each driver is responsible for filling out this structure at startup time, | |
244 | * in addition to providing other modesetting features, like i2c and DDC | |
245 | * bus accessors. | |
246 | */ | |
247 | struct drm_crtc_funcs { | |
88548636 DV |
248 | /** |
249 | * @reset: | |
250 | * | |
251 | * Reset CRTC hardware and software state to off. This function isn't | |
252 | * called by the core directly, only through drm_mode_config_reset(). | |
253 | * It's not a helper hook only for historical reasons. | |
254 | * | |
255 | * Atomic drivers can use drm_atomic_helper_crtc_reset() to reset | |
256 | * atomic state using this hook. | |
257 | */ | |
eb033556 | 258 | void (*reset)(struct drm_crtc *crtc); |
f453ba04 | 259 | |
f6da8c6e DV |
260 | /** |
261 | * @cursor_set: | |
262 | * | |
263 | * Update the cursor image. The cursor position is relative to the CRTC | |
264 | * and can be partially or fully outside of the visible area. | |
265 | * | |
266 | * Note that contrary to all other KMS functions the legacy cursor entry | |
267 | * points don't take a framebuffer object, but instead take directly a | |
268 | * raw buffer object id from the driver's buffer manager (which is | |
269 | * either GEM or TTM for current drivers). | |
270 | * | |
271 | * This entry point is deprecated, drivers should instead implement | |
272 | * universal plane support and register a proper cursor plane using | |
273 | * drm_crtc_init_with_planes(). | |
274 | * | |
275 | * This callback is optional | |
276 | * | |
277 | * RETURNS: | |
278 | * | |
279 | * 0 on success or a negative error code on failure. | |
280 | */ | |
f453ba04 DA |
281 | int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, |
282 | uint32_t handle, uint32_t width, uint32_t height); | |
f6da8c6e DV |
283 | |
284 | /** | |
285 | * @cursor_set2: | |
286 | * | |
287 | * Update the cursor image, including hotspot information. The hotspot | |
288 | * must not affect the cursor position in CRTC coordinates, but is only | |
289 | * meant as a hint for virtualized display hardware to coordinate the | |
290 | * guests and hosts cursor position. The cursor hotspot is relative to | |
291 | * the cursor image. Otherwise this works exactly like @cursor_set. | |
292 | * | |
293 | * This entry point is deprecated, drivers should instead implement | |
294 | * universal plane support and register a proper cursor plane using | |
295 | * drm_crtc_init_with_planes(). | |
296 | * | |
297 | * This callback is optional. | |
298 | * | |
299 | * RETURNS: | |
300 | * | |
301 | * 0 on success or a negative error code on failure. | |
302 | */ | |
4c813d4d DA |
303 | int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, |
304 | uint32_t handle, uint32_t width, uint32_t height, | |
305 | int32_t hot_x, int32_t hot_y); | |
f6da8c6e DV |
306 | |
307 | /** | |
308 | * @cursor_move: | |
309 | * | |
310 | * Update the cursor position. The cursor does not need to be visible | |
311 | * when this hook is called. | |
312 | * | |
313 | * This entry point is deprecated, drivers should instead implement | |
314 | * universal plane support and register a proper cursor plane using | |
315 | * drm_crtc_init_with_planes(). | |
316 | * | |
317 | * This callback is optional. | |
318 | * | |
319 | * RETURNS: | |
320 | * | |
321 | * 0 on success or a negative error code on failure. | |
322 | */ | |
f453ba04 DA |
323 | int (*cursor_move)(struct drm_crtc *crtc, int x, int y); |
324 | ||
f6da8c6e DV |
325 | /** |
326 | * @gamma_set: | |
327 | * | |
328 | * Set gamma on the CRTC. | |
329 | * | |
330 | * This callback is optional. | |
331 | * | |
2e38178e DV |
332 | * Atomic drivers who want to support gamma tables should implement the |
333 | * atomic color management support, enabled by calling | |
334 | * drm_crtc_enable_color_mgmt(), which then supports the legacy gamma | |
335 | * interface through the drm_atomic_helper_legacy_gamma_set() | |
336 | * compatibility implementation. | |
337 | * | |
f6da8c6e DV |
338 | * NOTE: |
339 | * | |
340 | * Drivers that support gamma tables and also fbdev emulation through | |
341 | * the provided helper library need to take care to fill out the gamma | |
342 | * hooks for both. Currently there's a bit an unfortunate duplication | |
343 | * going on, which should eventually be unified to just one set of | |
344 | * hooks. | |
345 | */ | |
7ea77283 | 346 | int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, |
6d124ff8 DV |
347 | uint32_t size, |
348 | struct drm_modeset_acquire_ctx *ctx); | |
88548636 DV |
349 | |
350 | /** | |
351 | * @destroy: | |
352 | * | |
353 | * Clean up plane resources. This is only called at driver unload time | |
354 | * through drm_mode_config_cleanup() since a CRTC cannot be hotplugged | |
355 | * in DRM. | |
356 | */ | |
f453ba04 DA |
357 | void (*destroy)(struct drm_crtc *crtc); |
358 | ||
f6da8c6e DV |
359 | /** |
360 | * @set_config: | |
361 | * | |
362 | * This is the main legacy entry point to change the modeset state on a | |
363 | * CRTC. All the details of the desired configuration are passed in a | |
ea0dd85a | 364 | * &struct drm_mode_set - see there for details. |
f6da8c6e DV |
365 | * |
366 | * Drivers implementing atomic modeset should use | |
367 | * drm_atomic_helper_set_config() to implement this hook. | |
368 | * | |
369 | * RETURNS: | |
370 | * | |
371 | * 0 on success or a negative error code on failure. | |
372 | */ | |
a4eff9aa DV |
373 | int (*set_config)(struct drm_mode_set *set, |
374 | struct drm_modeset_acquire_ctx *ctx); | |
d91d8a3f | 375 | |
f6da8c6e DV |
376 | /** |
377 | * @page_flip: | |
378 | * | |
379 | * Legacy entry point to schedule a flip to the given framebuffer. | |
380 | * | |
381 | * Page flipping is a synchronization mechanism that replaces the frame | |
382 | * buffer being scanned out by the CRTC with a new frame buffer during | |
383 | * vertical blanking, avoiding tearing (except when requested otherwise | |
384 | * through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application | |
385 | * requests a page flip the DRM core verifies that the new frame buffer | |
386 | * is large enough to be scanned out by the CRTC in the currently | |
d574528a DV |
387 | * configured mode and then calls this hook with a pointer to the new |
388 | * frame buffer. | |
f6da8c6e DV |
389 | * |
390 | * The driver must wait for any pending rendering to the new framebuffer | |
391 | * to complete before executing the flip. It should also wait for any | |
392 | * pending rendering from other drivers if the underlying buffer is a | |
393 | * shared dma-buf. | |
394 | * | |
395 | * An application can request to be notified when the page flip has | |
ea0dd85a | 396 | * completed. The drm core will supply a &struct drm_event in the event |
f6da8c6e DV |
397 | * parameter in this case. This can be handled by the |
398 | * drm_crtc_send_vblank_event() function, which the driver should call on | |
399 | * the provided event upon completion of the flip. Note that if | |
400 | * the driver supports vblank signalling and timestamping the vblank | |
401 | * counters and timestamps must agree with the ones returned from page | |
402 | * flip events. With the current vblank helper infrastructure this can | |
403 | * be achieved by holding a vblank reference while the page flip is | |
404 | * pending, acquired through drm_crtc_vblank_get() and released with | |
405 | * drm_crtc_vblank_put(). Drivers are free to implement their own vblank | |
406 | * counter and timestamp tracking though, e.g. if they have accurate | |
407 | * timestamp registers in hardware. | |
408 | * | |
f6da8c6e DV |
409 | * This callback is optional. |
410 | * | |
411 | * NOTE: | |
412 | * | |
413 | * Very early versions of the KMS ABI mandated that the driver must | |
414 | * block (but not reject) any rendering to the old framebuffer until the | |
415 | * flip operation has completed and the old framebuffer is no longer | |
416 | * visible. This requirement has been lifted, and userspace is instead | |
417 | * expected to request delivery of an event and wait with recycling old | |
418 | * buffers until such has been received. | |
419 | * | |
420 | * RETURNS: | |
421 | * | |
422 | * 0 on success or a negative error code on failure. Note that if a | |
d574528a | 423 | * page flip operation is already pending the callback should return |
f6da8c6e DV |
424 | * -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode |
425 | * or just runtime disabled through DPMS respectively the new atomic | |
4cba6850 DV |
426 | * "ACTIVE" state) should result in an -EINVAL error code. Note that |
427 | * drm_atomic_helper_page_flip() checks this already for atomic drivers. | |
d91d8a3f KH |
428 | */ |
429 | int (*page_flip)(struct drm_crtc *crtc, | |
430 | struct drm_framebuffer *fb, | |
ed8d1975 | 431 | struct drm_pending_vblank_event *event, |
41292b1f DV |
432 | uint32_t flags, |
433 | struct drm_modeset_acquire_ctx *ctx); | |
bffd9de0 | 434 | |
c229bfbb MD |
435 | /** |
436 | * @page_flip_target: | |
437 | * | |
438 | * Same as @page_flip but with an additional parameter specifying the | |
439 | * absolute target vertical blank period (as reported by | |
440 | * drm_crtc_vblank_count()) when the flip should take effect. | |
441 | * | |
442 | * Note that the core code calls drm_crtc_vblank_get before this entry | |
443 | * point, and will call drm_crtc_vblank_put if this entry point returns | |
444 | * any non-0 error code. It's the driver's responsibility to call | |
445 | * drm_crtc_vblank_put after this entry point returns 0, typically when | |
446 | * the flip completes. | |
447 | */ | |
448 | int (*page_flip_target)(struct drm_crtc *crtc, | |
449 | struct drm_framebuffer *fb, | |
450 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
451 | uint32_t flags, uint32_t target, |
452 | struct drm_modeset_acquire_ctx *ctx); | |
c229bfbb | 453 | |
88548636 DV |
454 | /** |
455 | * @set_property: | |
456 | * | |
457 | * This is the legacy entry point to update a property attached to the | |
458 | * CRTC. | |
459 | * | |
460 | * Drivers implementing atomic modeset should use | |
461 | * drm_atomic_helper_crtc_set_property() to implement this hook. | |
462 | * | |
463 | * This callback is optional if the driver does not support any legacy | |
464 | * driver-private properties. | |
465 | * | |
466 | * RETURNS: | |
467 | * | |
468 | * 0 on success or a negative error code on failure. | |
469 | */ | |
bffd9de0 PZ |
470 | int (*set_property)(struct drm_crtc *crtc, |
471 | struct drm_property *property, uint64_t val); | |
144ecb97 | 472 | |
88548636 DV |
473 | /** |
474 | * @atomic_duplicate_state: | |
475 | * | |
476 | * Duplicate the current atomic state for this CRTC and return it. | |
d574528a | 477 | * The core and helpers guarantee that any atomic state duplicated with |
88548636 | 478 | * this hook and still owned by the caller (i.e. not transferred to the |
d574528a DV |
479 | * driver by calling &drm_mode_config_funcs.atomic_commit) will be |
480 | * cleaned up by calling the @atomic_destroy_state hook in this | |
481 | * structure. | |
88548636 | 482 | * |
d574528a | 483 | * Atomic drivers which don't subclass &struct drm_crtc_state should use |
88548636 DV |
484 | * drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the |
485 | * state structure to extend it with driver-private state should use | |
486 | * __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is | |
487 | * duplicated in a consistent fashion across drivers. | |
488 | * | |
d574528a | 489 | * It is an error to call this hook before &drm_crtc.state has been |
88548636 DV |
490 | * initialized correctly. |
491 | * | |
492 | * NOTE: | |
493 | * | |
494 | * If the duplicate state references refcounted resources this hook must | |
495 | * acquire a reference for each of them. The driver must release these | |
496 | * references again in @atomic_destroy_state. | |
497 | * | |
498 | * RETURNS: | |
499 | * | |
500 | * Duplicated atomic state or NULL when the allocation failed. | |
501 | */ | |
144ecb97 | 502 | struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); |
88548636 DV |
503 | |
504 | /** | |
505 | * @atomic_destroy_state: | |
506 | * | |
507 | * Destroy a state duplicated with @atomic_duplicate_state and release | |
508 | * or unreference all resources it references | |
509 | */ | |
144ecb97 | 510 | void (*atomic_destroy_state)(struct drm_crtc *crtc, |
cc4ceb48 | 511 | struct drm_crtc_state *state); |
88548636 DV |
512 | |
513 | /** | |
514 | * @atomic_set_property: | |
515 | * | |
516 | * Decode a driver-private property value and store the decoded value | |
517 | * into the passed-in state structure. Since the atomic core decodes all | |
518 | * standardized properties (even for extensions beyond the core set of | |
519 | * properties which might not be implemented by all drivers) this | |
520 | * requires drivers to subclass the state structure. | |
521 | * | |
522 | * Such driver-private properties should really only be implemented for | |
523 | * truly hardware/vendor specific state. Instead it is preferred to | |
524 | * standardize atomic extension and decode the properties used to expose | |
525 | * such an extension in the core. | |
526 | * | |
527 | * Do not call this function directly, use | |
528 | * drm_atomic_crtc_set_property() instead. | |
529 | * | |
530 | * This callback is optional if the driver does not support any | |
531 | * driver-private atomic properties. | |
532 | * | |
533 | * NOTE: | |
534 | * | |
535 | * This function is called in the state assembly phase of atomic | |
536 | * modesets, which can be aborted for any reason (including on | |
537 | * userspace's request to just check whether a configuration would be | |
538 | * possible). Drivers MUST NOT touch any persistent state (hardware or | |
539 | * software) or data structures except the passed in @state parameter. | |
540 | * | |
541 | * Also since userspace controls in which order properties are set this | |
542 | * function must not do any input validation (since the state update is | |
543 | * incomplete and hence likely inconsistent). Instead any such input | |
544 | * validation must be done in the various atomic_check callbacks. | |
545 | * | |
546 | * RETURNS: | |
547 | * | |
548 | * 0 if the property has been found, -EINVAL if the property isn't | |
549 | * implemented by the driver (which should never happen, the core only | |
550 | * asks for properties attached to this CRTC). No other validation is | |
551 | * allowed by the driver. The core already checks that the property | |
552 | * value is within the range (integer, valid enum value, ...) the driver | |
553 | * set when registering the property. | |
554 | */ | |
144ecb97 DV |
555 | int (*atomic_set_property)(struct drm_crtc *crtc, |
556 | struct drm_crtc_state *state, | |
557 | struct drm_property *property, | |
558 | uint64_t val); | |
88548636 DV |
559 | /** |
560 | * @atomic_get_property: | |
561 | * | |
562 | * Reads out the decoded driver-private property. This is used to | |
c6b0ca3e | 563 | * implement the GETCRTC IOCTL. |
88548636 DV |
564 | * |
565 | * Do not call this function directly, use | |
566 | * drm_atomic_crtc_get_property() instead. | |
567 | * | |
568 | * This callback is optional if the driver does not support any | |
569 | * driver-private atomic properties. | |
570 | * | |
571 | * RETURNS: | |
572 | * | |
573 | * 0 on success, -EINVAL if the property isn't implemented by the | |
574 | * driver (which should never happen, the core only asks for | |
575 | * properties attached to this CRTC). | |
576 | */ | |
ac9c9256 RC |
577 | int (*atomic_get_property)(struct drm_crtc *crtc, |
578 | const struct drm_crtc_state *state, | |
579 | struct drm_property *property, | |
580 | uint64_t *val); | |
79190ea2 BG |
581 | |
582 | /** | |
583 | * @late_register: | |
584 | * | |
585 | * This optional hook can be used to register additional userspace | |
586 | * interfaces attached to the crtc like debugfs interfaces. | |
587 | * It is called late in the driver load sequence from drm_dev_register(). | |
588 | * Everything added from this callback should be unregistered in | |
589 | * the early_unregister callback. | |
590 | * | |
591 | * Returns: | |
592 | * | |
593 | * 0 on success, or a negative error code on failure. | |
594 | */ | |
595 | int (*late_register)(struct drm_crtc *crtc); | |
596 | ||
597 | /** | |
598 | * @early_unregister: | |
599 | * | |
600 | * This optional hook should be used to unregister the additional | |
601 | * userspace interfaces attached to the crtc from | |
559bdaf7 | 602 | * @late_register. It is called from drm_dev_unregister(), |
79190ea2 BG |
603 | * early in the driver unload sequence to disable userspace access |
604 | * before data structures are torndown. | |
605 | */ | |
606 | void (*early_unregister)(struct drm_crtc *crtc); | |
9edbf1fa TV |
607 | |
608 | /** | |
609 | * @set_crc_source: | |
610 | * | |
611 | * Changes the source of CRC checksums of frames at the request of | |
612 | * userspace, typically for testing purposes. The sources available are | |
613 | * specific of each driver and a %NULL value indicates that CRC | |
614 | * generation is to be switched off. | |
615 | * | |
616 | * When CRC generation is enabled, the driver should call | |
617 | * drm_crtc_add_crc_entry() at each frame, providing any information | |
618 | * that characterizes the frame contents in the crcN arguments, as | |
760f71e7 | 619 | * provided from the configured source. Drivers must accept an "auto" |
9edbf1fa TV |
620 | * source name that will select a default source for this CRTC. |
621 | * | |
760f71e7 DV |
622 | * Note that "auto" can depend upon the current modeset configuration, |
623 | * e.g. it could pick an encoder or output specific CRC sampling point. | |
624 | * | |
9edbf1fa TV |
625 | * This callback is optional if the driver does not support any CRC |
626 | * generation functionality. | |
627 | * | |
628 | * RETURNS: | |
629 | * | |
630 | * 0 on success or a negative error code on failure. | |
631 | */ | |
632 | int (*set_crc_source)(struct drm_crtc *crtc, const char *source, | |
633 | size_t *values_cnt); | |
fceffb32 RC |
634 | |
635 | /** | |
636 | * @atomic_print_state: | |
637 | * | |
ea0dd85a | 638 | * If driver subclasses &struct drm_crtc_state, it should implement |
fceffb32 RC |
639 | * this optional hook for printing additional driver specific state. |
640 | * | |
641 | * Do not call this directly, use drm_atomic_crtc_print_state() | |
642 | * instead. | |
643 | */ | |
644 | void (*atomic_print_state)(struct drm_printer *p, | |
645 | const struct drm_crtc_state *state); | |
84e35483 SG |
646 | |
647 | /** | |
648 | * @get_vblank_counter: | |
649 | * | |
650 | * Driver callback for fetching a raw hardware vblank counter for the | |
651 | * CRTC. It's meant to be used by new drivers as the replacement of | |
652 | * &drm_driver.get_vblank_counter hook. | |
653 | * | |
654 | * This callback is optional. If a device doesn't have a hardware | |
655 | * counter, the driver can simply leave the hook as NULL. The DRM core | |
656 | * will account for missed vblank events while interrupts where disabled | |
657 | * based on system timestamps. | |
658 | * | |
659 | * Wraparound handling and loss of events due to modesetting is dealt | |
660 | * with in the DRM core code, as long as drivers call | |
661 | * drm_crtc_vblank_off() and drm_crtc_vblank_on() when disabling or | |
662 | * enabling a CRTC. | |
663 | * | |
664 | * Returns: | |
665 | * | |
666 | * Raw vblank counter value. | |
667 | */ | |
668 | u32 (*get_vblank_counter)(struct drm_crtc *crtc); | |
669 | ||
670 | /** | |
671 | * @enable_vblank: | |
672 | * | |
673 | * Enable vblank interrupts for the CRTC. It's meant to be used by | |
674 | * new drivers as the replacement of &drm_driver.enable_vblank hook. | |
675 | * | |
676 | * Returns: | |
677 | * | |
678 | * Zero on success, appropriate errno if the vblank interrupt cannot | |
679 | * be enabled. | |
680 | */ | |
681 | int (*enable_vblank)(struct drm_crtc *crtc); | |
682 | ||
683 | /** | |
684 | * @disable_vblank: | |
685 | * | |
686 | * Disable vblank interrupts for the CRTC. It's meant to be used by | |
687 | * new drivers as the replacement of &drm_driver.disable_vblank hook. | |
688 | */ | |
689 | void (*disable_vblank)(struct drm_crtc *crtc); | |
f453ba04 DA |
690 | }; |
691 | ||
692 | /** | |
3bf0401c | 693 | * struct drm_crtc - central CRTC control structure |
7749163e | 694 | * @dev: parent DRM device |
2c0c33d4 | 695 | * @port: OF node used by drm_of_find_possible_crtcs() |
7749163e | 696 | * @head: list management |
ac3ba4a5 | 697 | * @name: human readable name, can be overwritten by the driver |
51fd371b | 698 | * @mutex: per-CRTC locking |
7749163e | 699 | * @base: base KMS object for ID tracking etc. |
e13161af MR |
700 | * @primary: primary plane for this CRTC |
701 | * @cursor: cursor plane for this CRTC | |
2c0c33d4 DV |
702 | * @cursor_x: current x position of the cursor, used for universal cursor planes |
703 | * @cursor_y: current y position of the cursor, used for universal cursor planes | |
f453ba04 | 704 | * @enabled: is this CRTC enabled? |
7749163e JB |
705 | * @mode: current mode timings |
706 | * @hwmode: mode timings as programmed to hw regs | |
f453ba04 DA |
707 | * @x: x position on screen |
708 | * @y: y position on screen | |
f453ba04 | 709 | * @funcs: CRTC control functions |
7749163e JB |
710 | * @gamma_size: size of gamma ramp |
711 | * @gamma_store: gamma ramp values | |
7749163e | 712 | * @helper_private: mid-layer private data |
bffd9de0 | 713 | * @properties: property tracking for this CRTC |
f453ba04 DA |
714 | * |
715 | * Each CRTC may have one or more connectors associated with it. This structure | |
716 | * allows the CRTC to be controlled. | |
717 | */ | |
718 | struct drm_crtc { | |
719 | struct drm_device *dev; | |
7e435aad | 720 | struct device_node *port; |
f453ba04 DA |
721 | struct list_head head; |
722 | ||
fa3ab4c2 VS |
723 | char *name; |
724 | ||
ac3ba4a5 DV |
725 | /** |
726 | * @mutex: | |
29494c17 | 727 | * |
c9e42b72 | 728 | * This provides a read lock for the overall CRTC state (mode, dpms |
29494c17 | 729 | * state, ...) and a write lock for everything which can be update |
c9e42b72 | 730 | * without a full modeset (fb, cursor data, CRTC properties ...). A full |
d574528a | 731 | * modeset also need to grab &drm_mode_config.connection_mutex. |
c9e42b72 DV |
732 | * |
733 | * For atomic drivers specifically this protects @state. | |
29494c17 | 734 | */ |
51fd371b | 735 | struct drm_modeset_lock mutex; |
29494c17 | 736 | |
f453ba04 DA |
737 | struct drm_mode_object base; |
738 | ||
e13161af MR |
739 | /* primary and cursor planes for CRTC */ |
740 | struct drm_plane *primary; | |
741 | struct drm_plane *cursor; | |
742 | ||
96094081 DV |
743 | /** |
744 | * @index: Position inside the mode_config.list, can be used as an array | |
745 | * index. It is invariant over the lifetime of the CRTC. | |
746 | */ | |
490d3d1b CW |
747 | unsigned index; |
748 | ||
161d0dc1 MR |
749 | /* position of cursor plane on crtc */ |
750 | int cursor_x; | |
751 | int cursor_y; | |
752 | ||
f453ba04 DA |
753 | bool enabled; |
754 | ||
27641c3f | 755 | /* Requested mode from modesetting. */ |
f453ba04 DA |
756 | struct drm_display_mode mode; |
757 | ||
27641c3f MK |
758 | /* Programmed mode in hw, after adjustments for encoders, |
759 | * crtc, panel scaling etc. Needed for timestamping etc. | |
760 | */ | |
761 | struct drm_display_mode hwmode; | |
762 | ||
f453ba04 | 763 | int x, y; |
f453ba04 DA |
764 | const struct drm_crtc_funcs *funcs; |
765 | ||
5488dc16 | 766 | /* Legacy FB CRTC gamma size for reporting to userspace */ |
f453ba04 DA |
767 | uint32_t gamma_size; |
768 | uint16_t *gamma_store; | |
769 | ||
770 | /* if you are using the helper */ | |
4490d4c7 | 771 | const struct drm_crtc_helper_funcs *helper_private; |
bffd9de0 PZ |
772 | |
773 | struct drm_object_properties properties; | |
d059f652 | 774 | |
3b24f7d6 DV |
775 | /** |
776 | * @state: | |
777 | * | |
778 | * Current atomic state for this CRTC. | |
c9e42b72 DV |
779 | * |
780 | * This is protected by @mutex. Note that nonblocking atomic commits | |
781 | * access the current CRTC state without taking locks. Either by going | |
782 | * through the &struct drm_atomic_state pointers, see | |
783 | * for_each_crtc_in_state(), for_each_oldnew_crtc_in_state(), | |
784 | * for_each_old_crtc_in_state() and for_each_new_crtc_in_state(). Or | |
785 | * through careful ordering of atomic commit operations as implemented | |
786 | * in the atomic helpers, see &struct drm_crtc_commit. | |
3b24f7d6 | 787 | */ |
144ecb97 DV |
788 | struct drm_crtc_state *state; |
789 | ||
3b24f7d6 DV |
790 | /** |
791 | * @commit_list: | |
792 | * | |
793 | * List of &drm_crtc_commit structures tracking pending commits. | |
794 | * Protected by @commit_lock. This list doesn't hold its own full | |
795 | * reference, but burrows it from the ongoing commit. Commit entries | |
796 | * must be removed from this list once the commit is fully completed, | |
797 | * but before it's correspoding &drm_atomic_state gets destroyed. | |
798 | */ | |
799 | struct list_head commit_list; | |
800 | ||
801 | /** | |
802 | * @commit_lock: | |
803 | * | |
804 | * Spinlock to protect @commit_list. | |
805 | */ | |
806 | spinlock_t commit_lock; | |
807 | ||
9edbf1fa TV |
808 | #ifdef CONFIG_DEBUG_FS |
809 | /** | |
810 | * @debugfs_entry: | |
811 | * | |
812 | * Debugfs directory for this CRTC. | |
813 | */ | |
814 | struct dentry *debugfs_entry; | |
47f6cdd2 | 815 | #endif |
9edbf1fa TV |
816 | |
817 | /** | |
818 | * @crc: | |
819 | * | |
820 | * Configuration settings of CRC capture. | |
821 | */ | |
822 | struct drm_crtc_crc crc; | |
6d6003c4 GP |
823 | |
824 | /** | |
825 | * @fence_context: | |
826 | * | |
827 | * timeline context used for fence operations. | |
828 | */ | |
829 | unsigned int fence_context; | |
830 | ||
831 | /** | |
832 | * @fence_lock: | |
833 | * | |
834 | * spinlock to protect the fences in the fence_context. | |
835 | */ | |
836 | ||
837 | spinlock_t fence_lock; | |
838 | /** | |
839 | * @fence_seqno: | |
840 | * | |
841 | * Seqno variable used as monotonic counter for the fences | |
842 | * created on the CRTC's timeline. | |
843 | */ | |
844 | unsigned long fence_seqno; | |
845 | ||
846 | /** | |
847 | * @timeline_name: | |
848 | * | |
849 | * The name of the CRTC's fence timeline. | |
850 | */ | |
851 | char timeline_name[32]; | |
f453ba04 DA |
852 | }; |
853 | ||
f453ba04 | 854 | /** |
3bf0401c | 855 | * struct drm_mode_set - new values for a CRTC config change |
ef27351a JB |
856 | * @fb: framebuffer to use for new config |
857 | * @crtc: CRTC whose configuration we're about to change | |
858 | * @mode: mode timings to use | |
859 | * @x: position of this CRTC relative to @fb | |
860 | * @y: position of this CRTC relative to @fb | |
861 | * @connectors: array of connectors to drive with this CRTC if possible | |
862 | * @num_connectors: size of @connectors array | |
f453ba04 | 863 | * |
d5d487eb DV |
864 | * This represents a modeset configuration for the legacy SETCRTC ioctl and is |
865 | * also used internally. Atomic drivers instead use &drm_atomic_state. | |
f453ba04 DA |
866 | */ |
867 | struct drm_mode_set { | |
f453ba04 DA |
868 | struct drm_framebuffer *fb; |
869 | struct drm_crtc *crtc; | |
870 | struct drm_display_mode *mode; | |
871 | ||
872 | uint32_t x; | |
873 | uint32_t y; | |
874 | ||
875 | struct drm_connector **connectors; | |
876 | size_t num_connectors; | |
877 | }; | |
878 | ||
f453ba04 | 879 | #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) |
f453ba04 | 880 | |
edd420ea | 881 | __printf(6, 7) |
f9882876 VS |
882 | int drm_crtc_init_with_planes(struct drm_device *dev, |
883 | struct drm_crtc *crtc, | |
884 | struct drm_plane *primary, | |
885 | struct drm_plane *cursor, | |
886 | const struct drm_crtc_funcs *funcs, | |
887 | const char *name, ...); | |
edd420ea | 888 | void drm_crtc_cleanup(struct drm_crtc *crtc); |
490d3d1b CW |
889 | |
890 | /** | |
891 | * drm_crtc_index - find the index of a registered CRTC | |
892 | * @crtc: CRTC to find index for | |
893 | * | |
894 | * Given a registered CRTC, return the index of that CRTC within a DRM | |
895 | * device's list of CRTCs. | |
896 | */ | |
a5bd451b | 897 | static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc) |
490d3d1b CW |
898 | { |
899 | return crtc->index; | |
900 | } | |
db5f7a6e RK |
901 | |
902 | /** | |
903 | * drm_crtc_mask - find the mask of a registered CRTC | |
904 | * @crtc: CRTC to find mask for | |
905 | * | |
906 | * Given a registered CRTC, return the mask bit of that CRTC for an | |
907 | * encoder's possible_crtcs field. | |
908 | */ | |
1dfdb0ed | 909 | static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc) |
db5f7a6e RK |
910 | { |
911 | return 1 << drm_crtc_index(crtc); | |
912 | } | |
f453ba04 | 913 | |
edd420ea DV |
914 | int drm_crtc_force_disable(struct drm_crtc *crtc); |
915 | int drm_crtc_force_disable_all(struct drm_device *dev); | |
8cf5c917 | 916 | |
edd420ea | 917 | int drm_mode_set_config_internal(struct drm_mode_set *set); |
6d1b81d8 | 918 | struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx); |
81065548 | 919 | |
d5d487eb DV |
920 | /** |
921 | * drm_crtc_find - look up a CRTC object from its ID | |
922 | * @dev: DRM device | |
923 | * @id: &drm_mode_object ID | |
924 | * | |
925 | * This can be used to look up a CRTC from its userspace ID. Only used by | |
926 | * drivers for legacy IOCTLs and interface, nowadays extensions to the KMS | |
927 | * userspace interface should be done using &drm_property. | |
928 | */ | |
96f60e37 RK |
929 | static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, |
930 | uint32_t id) | |
931 | { | |
932 | struct drm_mode_object *mo; | |
933 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); | |
934 | return mo ? obj_to_crtc(mo) : NULL; | |
935 | } | |
936 | ||
d5d487eb DV |
937 | /** |
938 | * drm_for_each_crtc - iterate over all CRTCs | |
939 | * @crtc: a &struct drm_crtc as the loop cursor | |
940 | * @dev: the &struct drm_device | |
941 | * | |
942 | * Iterate over all CRTCs of @dev. | |
943 | */ | |
6295d607 DV |
944 | #define drm_for_each_crtc(crtc, dev) \ |
945 | list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head) | |
946 | ||
f453ba04 | 947 | #endif /* __DRM_CRTC_H__ */ |