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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> |
321a95ae | 42 | #include <drm/drm_encoder.h> |
59e71ee7 | 43 | #include <drm/drm_property.h> |
199e4e96 | 44 | #include <drm/drm_bridge.h> |
cdc3d09f | 45 | #include <drm/drm_edid.h> |
43968d7b | 46 | #include <drm/drm_plane.h> |
18733802 | 47 | #include <drm/drm_blend.h> |
f1e2f66c | 48 | #include <drm/drm_color_mgmt.h> |
9edbf1fa | 49 | #include <drm/drm_debugfs_crc.h> |
28575f16 | 50 | #include <drm/drm_mode_config.h> |
308e5bcb | 51 | |
f453ba04 DA |
52 | struct drm_device; |
53 | struct drm_mode_set; | |
595887eb TR |
54 | struct drm_file; |
55 | struct drm_clip_rect; | |
fceffb32 | 56 | struct drm_printer; |
7e435aad | 57 | struct device_node; |
f54d1867 | 58 | struct dma_fence; |
81065548 | 59 | struct edid; |
f453ba04 | 60 | |
ebc44cf3 RC |
61 | static inline int64_t U642I64(uint64_t val) |
62 | { | |
63 | return (int64_t)*((int64_t *)&val); | |
64 | } | |
65 | static inline uint64_t I642U64(int64_t val) | |
66 | { | |
67 | return (uint64_t)*((uint64_t *)&val); | |
68 | } | |
69 | ||
f453ba04 | 70 | struct drm_crtc; |
f453ba04 | 71 | struct drm_encoder; |
d91d8a3f | 72 | struct drm_pending_vblank_event; |
8cf5c917 | 73 | struct drm_plane; |
3b336ec4 | 74 | struct drm_bridge; |
144ecb97 DV |
75 | struct drm_atomic_state; |
76 | ||
4490d4c7 DV |
77 | struct drm_crtc_helper_funcs; |
78 | struct drm_encoder_helper_funcs; | |
4490d4c7 DV |
79 | struct drm_plane_helper_funcs; |
80 | ||
144ecb97 | 81 | /** |
cc4ceb48 | 82 | * struct drm_crtc_state - mutable CRTC state |
07cc0ef6 | 83 | * @crtc: backpointer to the CRTC |
144ecb97 | 84 | * @enable: whether the CRTC should be enabled, gates all other state |
d9b13620 | 85 | * @active: whether the CRTC is actively displaying (used for DPMS) |
fc596660 ML |
86 | * @planes_changed: planes on this crtc are updated |
87 | * @mode_changed: crtc_state->mode or crtc_state->enable has been changed | |
88 | * @active_changed: crtc_state->active has been toggled. | |
89 | * @connectors_changed: connectors to this crtc have been updated | |
44d1240d | 90 | * @zpos_changed: zpos values of planes on this crtc have been updated |
5488dc16 LL |
91 | * @color_mgmt_changed: color management properties have changed (degamma or |
92 | * gamma LUT or CSC matrix) | |
6ddd388a | 93 | * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes |
4cd9fa52 | 94 | * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors |
e87a52b3 | 95 | * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached encoders |
623369e5 DV |
96 | * @last_vblank_count: for helpers and drivers to capture the vblank of the |
97 | * update to ensure framebuffer cleanup isn't done too early | |
2f324b42 | 98 | * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings |
144ecb97 | 99 | * @mode: current mode timings |
ac3ba4a5 | 100 | * @mode_blob: &drm_property_blob for @mode |
5488dc16 LL |
101 | * @degamma_lut: Lookup table for converting framebuffer pixel data |
102 | * before apply the conversion matrix | |
103 | * @ctm: Transformation matrix | |
104 | * @gamma_lut: Lookup table for converting pixel data after the | |
105 | * conversion matrix | |
144ecb97 | 106 | * @state: backpointer to global drm_atomic_state |
d9b13620 DV |
107 | * |
108 | * Note that the distinction between @enable and @active is rather subtile: | |
109 | * Flipping @active while @enable is set without changing anything else may | |
110 | * never return in a failure from the ->atomic_check callback. Userspace assumes | |
111 | * that a DPMS On will always succeed. In other words: @enable controls resource | |
112 | * assignment, @active controls the actual hardware state. | |
d807ed1c BS |
113 | * |
114 | * The three booleans active_changed, connectors_changed and mode_changed are | |
115 | * intended to indicate whether a full modeset is needed, rather than strictly | |
116 | * describing what has changed in a commit. | |
117 | * See also: drm_atomic_crtc_needs_modeset() | |
144ecb97 DV |
118 | */ |
119 | struct drm_crtc_state { | |
07cc0ef6 DV |
120 | struct drm_crtc *crtc; |
121 | ||
cc4ceb48 | 122 | bool enable; |
d9b13620 | 123 | bool active; |
144ecb97 | 124 | |
c2fcd274 DV |
125 | /* computed state bits used by helpers and drivers */ |
126 | bool planes_changed : 1; | |
623369e5 | 127 | bool mode_changed : 1; |
eab3bbef | 128 | bool active_changed : 1; |
fc596660 | 129 | bool connectors_changed : 1; |
44d1240d | 130 | bool zpos_changed : 1; |
5488dc16 | 131 | bool color_mgmt_changed : 1; |
623369e5 | 132 | |
6ddd388a RC |
133 | /* attached planes bitmask: |
134 | * WARNING: transitional helpers do not maintain plane_mask so | |
135 | * drivers not converted over to atomic helpers should not rely | |
136 | * on plane_mask being accurate! | |
137 | */ | |
138 | u32 plane_mask; | |
139 | ||
4cd9fa52 | 140 | u32 connector_mask; |
e87a52b3 | 141 | u32 encoder_mask; |
4cd9fa52 | 142 | |
623369e5 DV |
143 | /* last_vblank_count: for vblank waits before cleanup */ |
144 | u32 last_vblank_count; | |
c2fcd274 | 145 | |
2f324b42 DV |
146 | /* adjusted_mode: for use by helpers and drivers */ |
147 | struct drm_display_mode adjusted_mode; | |
148 | ||
144ecb97 DV |
149 | struct drm_display_mode mode; |
150 | ||
99cf4a29 DS |
151 | /* blob property to expose current mode to atomic userspace */ |
152 | struct drm_property_blob *mode_blob; | |
153 | ||
5488dc16 LL |
154 | /* blob property to expose color management to userspace */ |
155 | struct drm_property_blob *degamma_lut; | |
156 | struct drm_property_blob *ctm; | |
157 | struct drm_property_blob *gamma_lut; | |
158 | ||
61802130 DV |
159 | /** |
160 | * @event: | |
161 | * | |
162 | * Optional pointer to a DRM event to signal upon completion of the | |
163 | * state update. The driver must send out the event when the atomic | |
164 | * commit operation completes. There are two cases: | |
165 | * | |
166 | * - The event is for a CRTC which is being disabled through this | |
167 | * atomic commit. In that case the event can be send out any time | |
168 | * after the hardware has stopped scanning out the current | |
169 | * framebuffers. It should contain the timestamp and counter for the | |
170 | * last vblank before the display pipeline was shut off. | |
171 | * | |
172 | * - For a CRTC which is enabled at the end of the commit (even when it | |
173 | * undergoes an full modeset) the vblank timestamp and counter must | |
174 | * be for the vblank right before the first frame that scans out the | |
175 | * new set of buffers. Again the event can only be sent out after the | |
176 | * hardware has stopped scanning out the old buffers. | |
177 | * | |
178 | * - Events for disabled CRTCs are not allowed, and drivers can ignore | |
179 | * that case. | |
180 | * | |
181 | * This can be handled by the drm_crtc_send_vblank_event() function, | |
182 | * which the driver should call on the provided event upon completion of | |
183 | * the atomic commit. Note that if the driver supports vblank signalling | |
184 | * and timestamping the vblank counters and timestamps must agree with | |
185 | * the ones returned from page flip events. With the current vblank | |
186 | * helper infrastructure this can be achieved by holding a vblank | |
187 | * reference while the page flip is pending, acquired through | |
188 | * drm_crtc_vblank_get() and released with drm_crtc_vblank_put(). | |
189 | * Drivers are free to implement their own vblank counter and timestamp | |
190 | * tracking though, e.g. if they have accurate timestamp registers in | |
191 | * hardware. | |
192 | * | |
193 | * For hardware which supports some means to synchronize vblank | |
194 | * interrupt delivery with committing display state there's also | |
195 | * drm_crtc_arm_vblank_event(). See the documentation of that function | |
196 | * for a detailed discussion of the constraints it needs to be used | |
197 | * safely. | |
198 | */ | |
144ecb97 DV |
199 | struct drm_pending_vblank_event *event; |
200 | ||
201 | struct drm_atomic_state *state; | |
202 | }; | |
f453ba04 DA |
203 | |
204 | /** | |
3bf0401c | 205 | * struct drm_crtc_funcs - control CRTCs for a given device |
f453ba04 DA |
206 | * |
207 | * The drm_crtc_funcs structure is the central CRTC management structure | |
208 | * in the DRM. Each CRTC controls one or more connectors (note that the name | |
209 | * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. | |
210 | * connectors, not just CRTs). | |
211 | * | |
212 | * Each driver is responsible for filling out this structure at startup time, | |
213 | * in addition to providing other modesetting features, like i2c and DDC | |
214 | * bus accessors. | |
215 | */ | |
216 | struct drm_crtc_funcs { | |
88548636 DV |
217 | /** |
218 | * @reset: | |
219 | * | |
220 | * Reset CRTC hardware and software state to off. This function isn't | |
221 | * called by the core directly, only through drm_mode_config_reset(). | |
222 | * It's not a helper hook only for historical reasons. | |
223 | * | |
224 | * Atomic drivers can use drm_atomic_helper_crtc_reset() to reset | |
225 | * atomic state using this hook. | |
226 | */ | |
eb033556 | 227 | void (*reset)(struct drm_crtc *crtc); |
f453ba04 | 228 | |
f6da8c6e DV |
229 | /** |
230 | * @cursor_set: | |
231 | * | |
232 | * Update the cursor image. The cursor position is relative to the CRTC | |
233 | * and can be partially or fully outside of the visible area. | |
234 | * | |
235 | * Note that contrary to all other KMS functions the legacy cursor entry | |
236 | * points don't take a framebuffer object, but instead take directly a | |
237 | * raw buffer object id from the driver's buffer manager (which is | |
238 | * either GEM or TTM for current drivers). | |
239 | * | |
240 | * This entry point is deprecated, drivers should instead implement | |
241 | * universal plane support and register a proper cursor plane using | |
242 | * drm_crtc_init_with_planes(). | |
243 | * | |
244 | * This callback is optional | |
245 | * | |
246 | * RETURNS: | |
247 | * | |
248 | * 0 on success or a negative error code on failure. | |
249 | */ | |
f453ba04 DA |
250 | int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, |
251 | uint32_t handle, uint32_t width, uint32_t height); | |
f6da8c6e DV |
252 | |
253 | /** | |
254 | * @cursor_set2: | |
255 | * | |
256 | * Update the cursor image, including hotspot information. The hotspot | |
257 | * must not affect the cursor position in CRTC coordinates, but is only | |
258 | * meant as a hint for virtualized display hardware to coordinate the | |
259 | * guests and hosts cursor position. The cursor hotspot is relative to | |
260 | * the cursor image. Otherwise this works exactly like @cursor_set. | |
261 | * | |
262 | * This entry point is deprecated, drivers should instead implement | |
263 | * universal plane support and register a proper cursor plane using | |
264 | * drm_crtc_init_with_planes(). | |
265 | * | |
266 | * This callback is optional. | |
267 | * | |
268 | * RETURNS: | |
269 | * | |
270 | * 0 on success or a negative error code on failure. | |
271 | */ | |
4c813d4d DA |
272 | int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, |
273 | uint32_t handle, uint32_t width, uint32_t height, | |
274 | int32_t hot_x, int32_t hot_y); | |
f6da8c6e DV |
275 | |
276 | /** | |
277 | * @cursor_move: | |
278 | * | |
279 | * Update the cursor position. The cursor does not need to be visible | |
280 | * when this hook is called. | |
281 | * | |
282 | * This entry point is deprecated, drivers should instead implement | |
283 | * universal plane support and register a proper cursor plane using | |
284 | * drm_crtc_init_with_planes(). | |
285 | * | |
286 | * This callback is optional. | |
287 | * | |
288 | * RETURNS: | |
289 | * | |
290 | * 0 on success or a negative error code on failure. | |
291 | */ | |
f453ba04 DA |
292 | int (*cursor_move)(struct drm_crtc *crtc, int x, int y); |
293 | ||
f6da8c6e DV |
294 | /** |
295 | * @gamma_set: | |
296 | * | |
297 | * Set gamma on the CRTC. | |
298 | * | |
299 | * This callback is optional. | |
300 | * | |
301 | * NOTE: | |
302 | * | |
303 | * Drivers that support gamma tables and also fbdev emulation through | |
304 | * the provided helper library need to take care to fill out the gamma | |
305 | * hooks for both. Currently there's a bit an unfortunate duplication | |
306 | * going on, which should eventually be unified to just one set of | |
307 | * hooks. | |
308 | */ | |
7ea77283 ML |
309 | int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, |
310 | uint32_t size); | |
88548636 DV |
311 | |
312 | /** | |
313 | * @destroy: | |
314 | * | |
315 | * Clean up plane resources. This is only called at driver unload time | |
316 | * through drm_mode_config_cleanup() since a CRTC cannot be hotplugged | |
317 | * in DRM. | |
318 | */ | |
f453ba04 DA |
319 | void (*destroy)(struct drm_crtc *crtc); |
320 | ||
f6da8c6e DV |
321 | /** |
322 | * @set_config: | |
323 | * | |
324 | * This is the main legacy entry point to change the modeset state on a | |
325 | * CRTC. All the details of the desired configuration are passed in a | |
326 | * struct &drm_mode_set - see there for details. | |
327 | * | |
328 | * Drivers implementing atomic modeset should use | |
329 | * drm_atomic_helper_set_config() to implement this hook. | |
330 | * | |
331 | * RETURNS: | |
332 | * | |
333 | * 0 on success or a negative error code on failure. | |
334 | */ | |
f453ba04 | 335 | int (*set_config)(struct drm_mode_set *set); |
d91d8a3f | 336 | |
f6da8c6e DV |
337 | /** |
338 | * @page_flip: | |
339 | * | |
340 | * Legacy entry point to schedule a flip to the given framebuffer. | |
341 | * | |
342 | * Page flipping is a synchronization mechanism that replaces the frame | |
343 | * buffer being scanned out by the CRTC with a new frame buffer during | |
344 | * vertical blanking, avoiding tearing (except when requested otherwise | |
345 | * through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application | |
346 | * requests a page flip the DRM core verifies that the new frame buffer | |
347 | * is large enough to be scanned out by the CRTC in the currently | |
348 | * configured mode and then calls the CRTC ->page_flip() operation with a | |
349 | * pointer to the new frame buffer. | |
350 | * | |
351 | * The driver must wait for any pending rendering to the new framebuffer | |
352 | * to complete before executing the flip. It should also wait for any | |
353 | * pending rendering from other drivers if the underlying buffer is a | |
354 | * shared dma-buf. | |
355 | * | |
356 | * An application can request to be notified when the page flip has | |
357 | * completed. The drm core will supply a struct &drm_event in the event | |
358 | * parameter in this case. This can be handled by the | |
359 | * drm_crtc_send_vblank_event() function, which the driver should call on | |
360 | * the provided event upon completion of the flip. Note that if | |
361 | * the driver supports vblank signalling and timestamping the vblank | |
362 | * counters and timestamps must agree with the ones returned from page | |
363 | * flip events. With the current vblank helper infrastructure this can | |
364 | * be achieved by holding a vblank reference while the page flip is | |
365 | * pending, acquired through drm_crtc_vblank_get() and released with | |
366 | * drm_crtc_vblank_put(). Drivers are free to implement their own vblank | |
367 | * counter and timestamp tracking though, e.g. if they have accurate | |
368 | * timestamp registers in hardware. | |
369 | * | |
f6da8c6e DV |
370 | * This callback is optional. |
371 | * | |
372 | * NOTE: | |
373 | * | |
374 | * Very early versions of the KMS ABI mandated that the driver must | |
375 | * block (but not reject) any rendering to the old framebuffer until the | |
376 | * flip operation has completed and the old framebuffer is no longer | |
377 | * visible. This requirement has been lifted, and userspace is instead | |
378 | * expected to request delivery of an event and wait with recycling old | |
379 | * buffers until such has been received. | |
380 | * | |
381 | * RETURNS: | |
382 | * | |
383 | * 0 on success or a negative error code on failure. Note that if a | |
384 | * ->page_flip() operation is already pending the callback should return | |
385 | * -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode | |
386 | * or just runtime disabled through DPMS respectively the new atomic | |
4cba6850 DV |
387 | * "ACTIVE" state) should result in an -EINVAL error code. Note that |
388 | * drm_atomic_helper_page_flip() checks this already for atomic drivers. | |
d91d8a3f KH |
389 | */ |
390 | int (*page_flip)(struct drm_crtc *crtc, | |
391 | struct drm_framebuffer *fb, | |
ed8d1975 KP |
392 | struct drm_pending_vblank_event *event, |
393 | uint32_t flags); | |
bffd9de0 | 394 | |
c229bfbb MD |
395 | /** |
396 | * @page_flip_target: | |
397 | * | |
398 | * Same as @page_flip but with an additional parameter specifying the | |
399 | * absolute target vertical blank period (as reported by | |
400 | * drm_crtc_vblank_count()) when the flip should take effect. | |
401 | * | |
402 | * Note that the core code calls drm_crtc_vblank_get before this entry | |
403 | * point, and will call drm_crtc_vblank_put if this entry point returns | |
404 | * any non-0 error code. It's the driver's responsibility to call | |
405 | * drm_crtc_vblank_put after this entry point returns 0, typically when | |
406 | * the flip completes. | |
407 | */ | |
408 | int (*page_flip_target)(struct drm_crtc *crtc, | |
409 | struct drm_framebuffer *fb, | |
410 | struct drm_pending_vblank_event *event, | |
411 | uint32_t flags, uint32_t target); | |
412 | ||
88548636 DV |
413 | /** |
414 | * @set_property: | |
415 | * | |
416 | * This is the legacy entry point to update a property attached to the | |
417 | * CRTC. | |
418 | * | |
419 | * Drivers implementing atomic modeset should use | |
420 | * drm_atomic_helper_crtc_set_property() to implement this hook. | |
421 | * | |
422 | * This callback is optional if the driver does not support any legacy | |
423 | * driver-private properties. | |
424 | * | |
425 | * RETURNS: | |
426 | * | |
427 | * 0 on success or a negative error code on failure. | |
428 | */ | |
bffd9de0 PZ |
429 | int (*set_property)(struct drm_crtc *crtc, |
430 | struct drm_property *property, uint64_t val); | |
144ecb97 | 431 | |
88548636 DV |
432 | /** |
433 | * @atomic_duplicate_state: | |
434 | * | |
435 | * Duplicate the current atomic state for this CRTC and return it. | |
436 | * The core and helpers gurantee that any atomic state duplicated with | |
437 | * this hook and still owned by the caller (i.e. not transferred to the | |
438 | * driver by calling ->atomic_commit() from struct | |
439 | * &drm_mode_config_funcs) will be cleaned up by calling the | |
440 | * @atomic_destroy_state hook in this structure. | |
441 | * | |
442 | * Atomic drivers which don't subclass struct &drm_crtc should use | |
443 | * drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the | |
444 | * state structure to extend it with driver-private state should use | |
445 | * __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is | |
446 | * duplicated in a consistent fashion across drivers. | |
447 | * | |
448 | * It is an error to call this hook before crtc->state has been | |
449 | * initialized correctly. | |
450 | * | |
451 | * NOTE: | |
452 | * | |
453 | * If the duplicate state references refcounted resources this hook must | |
454 | * acquire a reference for each of them. The driver must release these | |
455 | * references again in @atomic_destroy_state. | |
456 | * | |
457 | * RETURNS: | |
458 | * | |
459 | * Duplicated atomic state or NULL when the allocation failed. | |
460 | */ | |
144ecb97 | 461 | struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); |
88548636 DV |
462 | |
463 | /** | |
464 | * @atomic_destroy_state: | |
465 | * | |
466 | * Destroy a state duplicated with @atomic_duplicate_state and release | |
467 | * or unreference all resources it references | |
468 | */ | |
144ecb97 | 469 | void (*atomic_destroy_state)(struct drm_crtc *crtc, |
cc4ceb48 | 470 | struct drm_crtc_state *state); |
88548636 DV |
471 | |
472 | /** | |
473 | * @atomic_set_property: | |
474 | * | |
475 | * Decode a driver-private property value and store the decoded value | |
476 | * into the passed-in state structure. Since the atomic core decodes all | |
477 | * standardized properties (even for extensions beyond the core set of | |
478 | * properties which might not be implemented by all drivers) this | |
479 | * requires drivers to subclass the state structure. | |
480 | * | |
481 | * Such driver-private properties should really only be implemented for | |
482 | * truly hardware/vendor specific state. Instead it is preferred to | |
483 | * standardize atomic extension and decode the properties used to expose | |
484 | * such an extension in the core. | |
485 | * | |
486 | * Do not call this function directly, use | |
487 | * drm_atomic_crtc_set_property() instead. | |
488 | * | |
489 | * This callback is optional if the driver does not support any | |
490 | * driver-private atomic properties. | |
491 | * | |
492 | * NOTE: | |
493 | * | |
494 | * This function is called in the state assembly phase of atomic | |
495 | * modesets, which can be aborted for any reason (including on | |
496 | * userspace's request to just check whether a configuration would be | |
497 | * possible). Drivers MUST NOT touch any persistent state (hardware or | |
498 | * software) or data structures except the passed in @state parameter. | |
499 | * | |
500 | * Also since userspace controls in which order properties are set this | |
501 | * function must not do any input validation (since the state update is | |
502 | * incomplete and hence likely inconsistent). Instead any such input | |
503 | * validation must be done in the various atomic_check callbacks. | |
504 | * | |
505 | * RETURNS: | |
506 | * | |
507 | * 0 if the property has been found, -EINVAL if the property isn't | |
508 | * implemented by the driver (which should never happen, the core only | |
509 | * asks for properties attached to this CRTC). No other validation is | |
510 | * allowed by the driver. The core already checks that the property | |
511 | * value is within the range (integer, valid enum value, ...) the driver | |
512 | * set when registering the property. | |
513 | */ | |
144ecb97 DV |
514 | int (*atomic_set_property)(struct drm_crtc *crtc, |
515 | struct drm_crtc_state *state, | |
516 | struct drm_property *property, | |
517 | uint64_t val); | |
88548636 DV |
518 | /** |
519 | * @atomic_get_property: | |
520 | * | |
521 | * Reads out the decoded driver-private property. This is used to | |
c6b0ca3e | 522 | * implement the GETCRTC IOCTL. |
88548636 DV |
523 | * |
524 | * Do not call this function directly, use | |
525 | * drm_atomic_crtc_get_property() instead. | |
526 | * | |
527 | * This callback is optional if the driver does not support any | |
528 | * driver-private atomic properties. | |
529 | * | |
530 | * RETURNS: | |
531 | * | |
532 | * 0 on success, -EINVAL if the property isn't implemented by the | |
533 | * driver (which should never happen, the core only asks for | |
534 | * properties attached to this CRTC). | |
535 | */ | |
ac9c9256 RC |
536 | int (*atomic_get_property)(struct drm_crtc *crtc, |
537 | const struct drm_crtc_state *state, | |
538 | struct drm_property *property, | |
539 | uint64_t *val); | |
79190ea2 BG |
540 | |
541 | /** | |
542 | * @late_register: | |
543 | * | |
544 | * This optional hook can be used to register additional userspace | |
545 | * interfaces attached to the crtc like debugfs interfaces. | |
546 | * It is called late in the driver load sequence from drm_dev_register(). | |
547 | * Everything added from this callback should be unregistered in | |
548 | * the early_unregister callback. | |
549 | * | |
550 | * Returns: | |
551 | * | |
552 | * 0 on success, or a negative error code on failure. | |
553 | */ | |
554 | int (*late_register)(struct drm_crtc *crtc); | |
555 | ||
556 | /** | |
557 | * @early_unregister: | |
558 | * | |
559 | * This optional hook should be used to unregister the additional | |
560 | * userspace interfaces attached to the crtc from | |
561 | * late_unregister(). It is called from drm_dev_unregister(), | |
562 | * early in the driver unload sequence to disable userspace access | |
563 | * before data structures are torndown. | |
564 | */ | |
565 | void (*early_unregister)(struct drm_crtc *crtc); | |
9edbf1fa TV |
566 | |
567 | /** | |
568 | * @set_crc_source: | |
569 | * | |
570 | * Changes the source of CRC checksums of frames at the request of | |
571 | * userspace, typically for testing purposes. The sources available are | |
572 | * specific of each driver and a %NULL value indicates that CRC | |
573 | * generation is to be switched off. | |
574 | * | |
575 | * When CRC generation is enabled, the driver should call | |
576 | * drm_crtc_add_crc_entry() at each frame, providing any information | |
577 | * that characterizes the frame contents in the crcN arguments, as | |
578 | * provided from the configured source. Drivers must accept a "auto" | |
579 | * source name that will select a default source for this CRTC. | |
580 | * | |
581 | * This callback is optional if the driver does not support any CRC | |
582 | * generation functionality. | |
583 | * | |
584 | * RETURNS: | |
585 | * | |
586 | * 0 on success or a negative error code on failure. | |
587 | */ | |
588 | int (*set_crc_source)(struct drm_crtc *crtc, const char *source, | |
589 | size_t *values_cnt); | |
fceffb32 RC |
590 | |
591 | /** | |
592 | * @atomic_print_state: | |
593 | * | |
594 | * If driver subclasses struct &drm_crtc_state, it should implement | |
595 | * this optional hook for printing additional driver specific state. | |
596 | * | |
597 | * Do not call this directly, use drm_atomic_crtc_print_state() | |
598 | * instead. | |
599 | */ | |
600 | void (*atomic_print_state)(struct drm_printer *p, | |
601 | const struct drm_crtc_state *state); | |
f453ba04 DA |
602 | }; |
603 | ||
604 | /** | |
3bf0401c | 605 | * struct drm_crtc - central CRTC control structure |
7749163e | 606 | * @dev: parent DRM device |
2c0c33d4 | 607 | * @port: OF node used by drm_of_find_possible_crtcs() |
7749163e | 608 | * @head: list management |
ac3ba4a5 | 609 | * @name: human readable name, can be overwritten by the driver |
51fd371b | 610 | * @mutex: per-CRTC locking |
7749163e | 611 | * @base: base KMS object for ID tracking etc. |
e13161af MR |
612 | * @primary: primary plane for this CRTC |
613 | * @cursor: cursor plane for this CRTC | |
2c0c33d4 DV |
614 | * @cursor_x: current x position of the cursor, used for universal cursor planes |
615 | * @cursor_y: current y position of the cursor, used for universal cursor planes | |
f453ba04 | 616 | * @enabled: is this CRTC enabled? |
7749163e JB |
617 | * @mode: current mode timings |
618 | * @hwmode: mode timings as programmed to hw regs | |
f453ba04 DA |
619 | * @x: x position on screen |
620 | * @y: y position on screen | |
f453ba04 | 621 | * @funcs: CRTC control functions |
7749163e JB |
622 | * @gamma_size: size of gamma ramp |
623 | * @gamma_store: gamma ramp values | |
7749163e | 624 | * @helper_private: mid-layer private data |
bffd9de0 | 625 | * @properties: property tracking for this CRTC |
f453ba04 DA |
626 | * |
627 | * Each CRTC may have one or more connectors associated with it. This structure | |
628 | * allows the CRTC to be controlled. | |
629 | */ | |
630 | struct drm_crtc { | |
631 | struct drm_device *dev; | |
7e435aad | 632 | struct device_node *port; |
f453ba04 DA |
633 | struct list_head head; |
634 | ||
fa3ab4c2 VS |
635 | char *name; |
636 | ||
ac3ba4a5 DV |
637 | /** |
638 | * @mutex: | |
29494c17 DV |
639 | * |
640 | * This provides a read lock for the overall crtc state (mode, dpms | |
641 | * state, ...) and a write lock for everything which can be update | |
ac3ba4a5 DV |
642 | * without a full modeset (fb, cursor data, crtc properties ...). Full |
643 | * modeset also need to grab dev->mode_config.connection_mutex. | |
29494c17 | 644 | */ |
51fd371b | 645 | struct drm_modeset_lock mutex; |
29494c17 | 646 | |
f453ba04 DA |
647 | struct drm_mode_object base; |
648 | ||
e13161af MR |
649 | /* primary and cursor planes for CRTC */ |
650 | struct drm_plane *primary; | |
651 | struct drm_plane *cursor; | |
652 | ||
96094081 DV |
653 | /** |
654 | * @index: Position inside the mode_config.list, can be used as an array | |
655 | * index. It is invariant over the lifetime of the CRTC. | |
656 | */ | |
490d3d1b CW |
657 | unsigned index; |
658 | ||
161d0dc1 MR |
659 | /* position of cursor plane on crtc */ |
660 | int cursor_x; | |
661 | int cursor_y; | |
662 | ||
f453ba04 DA |
663 | bool enabled; |
664 | ||
27641c3f | 665 | /* Requested mode from modesetting. */ |
f453ba04 DA |
666 | struct drm_display_mode mode; |
667 | ||
27641c3f MK |
668 | /* Programmed mode in hw, after adjustments for encoders, |
669 | * crtc, panel scaling etc. Needed for timestamping etc. | |
670 | */ | |
671 | struct drm_display_mode hwmode; | |
672 | ||
f453ba04 | 673 | int x, y; |
f453ba04 DA |
674 | const struct drm_crtc_funcs *funcs; |
675 | ||
5488dc16 | 676 | /* Legacy FB CRTC gamma size for reporting to userspace */ |
f453ba04 DA |
677 | uint32_t gamma_size; |
678 | uint16_t *gamma_store; | |
679 | ||
680 | /* if you are using the helper */ | |
4490d4c7 | 681 | const struct drm_crtc_helper_funcs *helper_private; |
bffd9de0 PZ |
682 | |
683 | struct drm_object_properties properties; | |
d059f652 | 684 | |
3b24f7d6 DV |
685 | /** |
686 | * @state: | |
687 | * | |
688 | * Current atomic state for this CRTC. | |
689 | */ | |
144ecb97 DV |
690 | struct drm_crtc_state *state; |
691 | ||
3b24f7d6 DV |
692 | /** |
693 | * @commit_list: | |
694 | * | |
695 | * List of &drm_crtc_commit structures tracking pending commits. | |
696 | * Protected by @commit_lock. This list doesn't hold its own full | |
697 | * reference, but burrows it from the ongoing commit. Commit entries | |
698 | * must be removed from this list once the commit is fully completed, | |
699 | * but before it's correspoding &drm_atomic_state gets destroyed. | |
700 | */ | |
701 | struct list_head commit_list; | |
702 | ||
703 | /** | |
704 | * @commit_lock: | |
705 | * | |
706 | * Spinlock to protect @commit_list. | |
707 | */ | |
708 | spinlock_t commit_lock; | |
709 | ||
710 | /** | |
711 | * @acquire_ctx: | |
712 | * | |
713 | * Per-CRTC implicit acquire context used by atomic drivers for legacy | |
714 | * IOCTLs, so that atomic drivers can get at the locking acquire | |
715 | * context. | |
d059f652 DV |
716 | */ |
717 | struct drm_modeset_acquire_ctx *acquire_ctx; | |
9edbf1fa TV |
718 | |
719 | #ifdef CONFIG_DEBUG_FS | |
720 | /** | |
721 | * @debugfs_entry: | |
722 | * | |
723 | * Debugfs directory for this CRTC. | |
724 | */ | |
725 | struct dentry *debugfs_entry; | |
726 | ||
727 | /** | |
728 | * @crc: | |
729 | * | |
730 | * Configuration settings of CRC capture. | |
731 | */ | |
732 | struct drm_crtc_crc crc; | |
733 | #endif | |
6d6003c4 GP |
734 | |
735 | /** | |
736 | * @fence_context: | |
737 | * | |
738 | * timeline context used for fence operations. | |
739 | */ | |
740 | unsigned int fence_context; | |
741 | ||
742 | /** | |
743 | * @fence_lock: | |
744 | * | |
745 | * spinlock to protect the fences in the fence_context. | |
746 | */ | |
747 | ||
748 | spinlock_t fence_lock; | |
749 | /** | |
750 | * @fence_seqno: | |
751 | * | |
752 | * Seqno variable used as monotonic counter for the fences | |
753 | * created on the CRTC's timeline. | |
754 | */ | |
755 | unsigned long fence_seqno; | |
756 | ||
757 | /** | |
758 | * @timeline_name: | |
759 | * | |
760 | * The name of the CRTC's fence timeline. | |
761 | */ | |
762 | char timeline_name[32]; | |
f453ba04 DA |
763 | }; |
764 | ||
f453ba04 | 765 | /** |
3bf0401c | 766 | * struct drm_mode_set - new values for a CRTC config change |
ef27351a JB |
767 | * @fb: framebuffer to use for new config |
768 | * @crtc: CRTC whose configuration we're about to change | |
769 | * @mode: mode timings to use | |
770 | * @x: position of this CRTC relative to @fb | |
771 | * @y: position of this CRTC relative to @fb | |
772 | * @connectors: array of connectors to drive with this CRTC if possible | |
773 | * @num_connectors: size of @connectors array | |
f453ba04 DA |
774 | * |
775 | * Represents a single crtc the connectors that it drives with what mode | |
776 | * and from which framebuffer it scans out from. | |
777 | * | |
778 | * This is used to set modes. | |
779 | */ | |
780 | struct drm_mode_set { | |
f453ba04 DA |
781 | struct drm_framebuffer *fb; |
782 | struct drm_crtc *crtc; | |
783 | struct drm_display_mode *mode; | |
784 | ||
785 | uint32_t x; | |
786 | uint32_t y; | |
787 | ||
788 | struct drm_connector **connectors; | |
789 | size_t num_connectors; | |
790 | }; | |
791 | ||
f453ba04 | 792 | #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) |
f453ba04 | 793 | |
edd420ea | 794 | __printf(6, 7) |
f9882876 VS |
795 | int drm_crtc_init_with_planes(struct drm_device *dev, |
796 | struct drm_crtc *crtc, | |
797 | struct drm_plane *primary, | |
798 | struct drm_plane *cursor, | |
799 | const struct drm_crtc_funcs *funcs, | |
800 | const char *name, ...); | |
edd420ea | 801 | void drm_crtc_cleanup(struct drm_crtc *crtc); |
490d3d1b CW |
802 | |
803 | /** | |
804 | * drm_crtc_index - find the index of a registered CRTC | |
805 | * @crtc: CRTC to find index for | |
806 | * | |
807 | * Given a registered CRTC, return the index of that CRTC within a DRM | |
808 | * device's list of CRTCs. | |
809 | */ | |
a5bd451b | 810 | static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc) |
490d3d1b CW |
811 | { |
812 | return crtc->index; | |
813 | } | |
db5f7a6e RK |
814 | |
815 | /** | |
816 | * drm_crtc_mask - find the mask of a registered CRTC | |
817 | * @crtc: CRTC to find mask for | |
818 | * | |
819 | * Given a registered CRTC, return the mask bit of that CRTC for an | |
820 | * encoder's possible_crtcs field. | |
821 | */ | |
1dfdb0ed | 822 | static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc) |
db5f7a6e RK |
823 | { |
824 | return 1 << drm_crtc_index(crtc); | |
825 | } | |
f453ba04 | 826 | |
edd420ea DV |
827 | void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, |
828 | int *hdisplay, int *vdisplay); | |
829 | int drm_crtc_force_disable(struct drm_crtc *crtc); | |
830 | int drm_crtc_force_disable_all(struct drm_device *dev); | |
8cf5c917 | 831 | |
edd420ea | 832 | int drm_mode_set_config_internal(struct drm_mode_set *set); |
81065548 | 833 | |
96f60e37 RK |
834 | /* Helpers */ |
835 | static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, | |
836 | uint32_t id) | |
837 | { | |
838 | struct drm_mode_object *mo; | |
839 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); | |
840 | return mo ? obj_to_crtc(mo) : NULL; | |
841 | } | |
842 | ||
6295d607 DV |
843 | #define drm_for_each_crtc(crtc, dev) \ |
844 | list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head) | |
845 | ||
7a3f3d66 DV |
846 | static inline void |
847 | assert_drm_connector_list_read_locked(struct drm_mode_config *mode_config) | |
848 | { | |
cff20ba2 DV |
849 | /* |
850 | * The connector hotadd/remove code currently grabs both locks when | |
851 | * updating lists. Hence readers need only hold either of them to be | |
852 | * safe and the check amounts to | |
853 | * | |
854 | * WARN_ON(not_holding(A) && not_holding(B)). | |
855 | */ | |
856 | WARN_ON(!mutex_is_locked(&mode_config->mutex) && | |
857 | !drm_modeset_is_locked(&mode_config->connection_mutex)); | |
7a3f3d66 DV |
858 | } |
859 | ||
f453ba04 | 860 | #endif /* __DRM_CRTC_H__ */ |