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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> | |
31 | #include <linux/idr.h> | |
f453ba04 | 32 | #include <linux/fb.h> |
985e5dc2 | 33 | #include <linux/hdmi.h> |
b5571e9d | 34 | #include <linux/media-bus-format.h> |
d7d2c48e DH |
35 | #include <uapi/drm/drm_mode.h> |
36 | #include <uapi/drm/drm_fourcc.h> | |
51fd371b | 37 | #include <drm/drm_modeset_lock.h> |
308e5bcb | 38 | |
f453ba04 DA |
39 | struct drm_device; |
40 | struct drm_mode_set; | |
41 | struct drm_framebuffer; | |
7e3bdf4a | 42 | struct drm_object_properties; |
595887eb TR |
43 | struct drm_file; |
44 | struct drm_clip_rect; | |
7e435aad | 45 | struct device_node; |
e2330f07 | 46 | struct fence; |
f453ba04 | 47 | |
f453ba04 DA |
48 | struct drm_mode_object { |
49 | uint32_t id; | |
50 | uint32_t type; | |
7e3bdf4a | 51 | struct drm_object_properties *properties; |
d0f37cf6 DA |
52 | struct kref refcount; |
53 | void (*free_cb)(struct kref *kref); | |
7e3bdf4a PZ |
54 | }; |
55 | ||
fe456168 | 56 | #define DRM_OBJECT_MAX_PROPERTY 24 |
7e3bdf4a | 57 | struct drm_object_properties { |
88a48e29 | 58 | int count, atomic_count; |
b17cd757 RC |
59 | /* NOTE: if we ever start dynamically destroying properties (ie. |
60 | * not at drm_mode_config_cleanup() time), then we'd have to do | |
61 | * a better job of detaching property from mode objects to avoid | |
62 | * dangling property pointers: | |
63 | */ | |
64 | struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY]; | |
22b8b13b RC |
65 | /* do not read/write values directly, but use drm_object_property_get_value() |
66 | * and drm_object_property_set_value(): | |
67 | */ | |
7e3bdf4a | 68 | uint64_t values[DRM_OBJECT_MAX_PROPERTY]; |
f453ba04 DA |
69 | }; |
70 | ||
ebc44cf3 RC |
71 | static inline int64_t U642I64(uint64_t val) |
72 | { | |
73 | return (int64_t)*((int64_t *)&val); | |
74 | } | |
75 | static inline uint64_t I642U64(int64_t val) | |
76 | { | |
77 | return (uint64_t)*((uint64_t *)&val); | |
78 | } | |
79 | ||
d9c38242 RF |
80 | /* |
81 | * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the | |
82 | * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and | |
83 | * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation | |
84 | */ | |
62209070 | 85 | #define DRM_ROTATE_MASK 0x0f |
06596961 VS |
86 | #define DRM_ROTATE_0 0 |
87 | #define DRM_ROTATE_90 1 | |
88 | #define DRM_ROTATE_180 2 | |
89 | #define DRM_ROTATE_270 3 | |
62209070 | 90 | #define DRM_REFLECT_MASK (~DRM_ROTATE_MASK) |
06596961 VS |
91 | #define DRM_REFLECT_X 4 |
92 | #define DRM_REFLECT_Y 5 | |
93 | ||
55310008 DV |
94 | enum drm_connector_force { |
95 | DRM_FORCE_UNSPECIFIED, | |
96 | DRM_FORCE_OFF, | |
97 | DRM_FORCE_ON, /* force on analog part normally */ | |
98 | DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ | |
f453ba04 DA |
99 | }; |
100 | ||
55310008 | 101 | #include <drm/drm_modes.h> |
4aa17cf0 | 102 | |
f453ba04 DA |
103 | enum drm_connector_status { |
104 | connector_status_connected = 1, | |
105 | connector_status_disconnected = 2, | |
106 | connector_status_unknown = 3, | |
107 | }; | |
108 | ||
109 | enum subpixel_order { | |
110 | SubPixelUnknown = 0, | |
111 | SubPixelHorizontalRGB, | |
112 | SubPixelHorizontalBGR, | |
113 | SubPixelVerticalRGB, | |
114 | SubPixelVerticalBGR, | |
115 | SubPixelNone, | |
116 | }; | |
117 | ||
da05a5a7 JB |
118 | #define DRM_COLOR_FORMAT_RGB444 (1<<0) |
119 | #define DRM_COLOR_FORMAT_YCRCB444 (1<<1) | |
120 | #define DRM_COLOR_FORMAT_YCRCB422 (1<<2) | |
f0aa0838 SA |
121 | |
122 | #define DRM_BUS_FLAG_DE_LOW (1<<0) | |
123 | #define DRM_BUS_FLAG_DE_HIGH (1<<1) | |
124 | /* drive data on pos. edge */ | |
125 | #define DRM_BUS_FLAG_PIXDATA_POSEDGE (1<<2) | |
126 | /* drive data on neg. edge */ | |
127 | #define DRM_BUS_FLAG_PIXDATA_NEGEDGE (1<<3) | |
128 | ||
f453ba04 DA |
129 | /* |
130 | * Describes a given display (e.g. CRT or flat panel) and its limitations. | |
131 | */ | |
132 | struct drm_display_info { | |
133 | char name[DRM_DISPLAY_INFO_LEN]; | |
fb439640 | 134 | |
f453ba04 DA |
135 | /* Physical size */ |
136 | unsigned int width_mm; | |
137 | unsigned int height_mm; | |
138 | ||
f453ba04 DA |
139 | /* Clock limits FIXME: storage format */ |
140 | unsigned int min_vfreq, max_vfreq; | |
141 | unsigned int min_hfreq, max_hfreq; | |
142 | unsigned int pixel_clock; | |
3b11228b | 143 | unsigned int bpc; |
f453ba04 | 144 | |
f453ba04 | 145 | enum subpixel_order subpixel_order; |
da05a5a7 | 146 | u32 color_formats; |
f453ba04 | 147 | |
b5571e9d BB |
148 | const u32 *bus_formats; |
149 | unsigned int num_bus_formats; | |
f0aa0838 | 150 | u32 bus_flags; |
b5571e9d | 151 | |
5d02626d MK |
152 | /* Mask of supported hdmi deep color modes */ |
153 | u8 edid_hdmi_dc_modes; | |
154 | ||
ebec9a7b | 155 | u8 cea_rev; |
f453ba04 DA |
156 | }; |
157 | ||
138f9ebb DA |
158 | /* data corresponds to displayid vend/prod/serial */ |
159 | struct drm_tile_group { | |
160 | struct kref refcount; | |
161 | struct drm_device *dev; | |
162 | int id; | |
163 | u8 group_data[8]; | |
164 | }; | |
165 | ||
c6b0ca3e DV |
166 | /** |
167 | * struct drm_framebuffer_funcs - framebuffer hooks | |
168 | */ | |
f453ba04 | 169 | struct drm_framebuffer_funcs { |
c6b0ca3e DV |
170 | /** |
171 | * @destroy: | |
172 | * | |
173 | * Clean up framebuffer resources, specifically also unreference the | |
174 | * backing storage. The core guarantees to call this function for every | |
175 | * framebuffer successfully created by ->fb_create() in | |
d55f5320 DV |
176 | * &drm_mode_config_funcs. Drivers must also call |
177 | * drm_framebuffer_cleanup() to release DRM core resources for this | |
178 | * framebuffer. | |
c6b0ca3e | 179 | */ |
f453ba04 | 180 | void (*destroy)(struct drm_framebuffer *framebuffer); |
c6b0ca3e DV |
181 | |
182 | /** | |
183 | * @create_handle: | |
184 | * | |
185 | * Create a buffer handle in the driver-specific buffer manager (either | |
186 | * GEM or TTM) valid for the passed-in struct &drm_file. This is used by | |
187 | * the core to implement the GETFB IOCTL, which returns (for | |
188 | * sufficiently priviledged user) also a native buffer handle. This can | |
189 | * be used for seamless transitions between modesetting clients by | |
190 | * copying the current screen contents to a private buffer and blending | |
191 | * between that and the new contents. | |
192 | * | |
d55f5320 DV |
193 | * GEM based drivers should call drm_gem_handle_create() to create the |
194 | * handle. | |
195 | * | |
c6b0ca3e DV |
196 | * RETURNS: |
197 | * | |
198 | * 0 on success or a negative error code on failure. | |
199 | */ | |
f453ba04 DA |
200 | int (*create_handle)(struct drm_framebuffer *fb, |
201 | struct drm_file *file_priv, | |
202 | unsigned int *handle); | |
c6b0ca3e DV |
203 | /** |
204 | * @dirty: | |
884840aa | 205 | * |
c6b0ca3e | 206 | * Optional callback for the dirty fb IOCTL. |
884840aa | 207 | * |
c6b0ca3e DV |
208 | * Userspace can notify the driver via this callback that an area of the |
209 | * framebuffer has changed and should be flushed to the display | |
210 | * hardware. This can also be used internally, e.g. by the fbdev | |
211 | * emulation, though that's not the case currently. | |
212 | * | |
213 | * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd | |
214 | * for more information as all the semantics and arguments have a one to | |
215 | * one mapping on this function. | |
216 | * | |
217 | * RETURNS: | |
218 | * | |
219 | * 0 on success or a negative error code on failure. | |
884840aa | 220 | */ |
02b00162 TH |
221 | int (*dirty)(struct drm_framebuffer *framebuffer, |
222 | struct drm_file *file_priv, unsigned flags, | |
884840aa JB |
223 | unsigned color, struct drm_clip_rect *clips, |
224 | unsigned num_clips); | |
f453ba04 DA |
225 | }; |
226 | ||
227 | struct drm_framebuffer { | |
228 | struct drm_device *dev; | |
f7eff60e RC |
229 | /* |
230 | * Note that the fb is refcounted for the benefit of driver internals, | |
231 | * for example some hw, disabling a CRTC/plane is asynchronous, and | |
232 | * scanout does not actually complete until the next vblank. So some | |
233 | * cleanup (like releasing the reference(s) on the backing GEM bo(s)) | |
234 | * should be deferred. In cases like this, the driver would like to | |
235 | * hold a ref to the fb even though it has already been removed from | |
236 | * userspace perspective. | |
d0f37cf6 | 237 | * The refcount is stored inside the mode object. |
f7eff60e | 238 | */ |
4b096ac1 DV |
239 | /* |
240 | * Place on the dev->mode_config.fb_list, access protected by | |
241 | * dev->mode_config.fb_lock. | |
242 | */ | |
f453ba04 DA |
243 | struct list_head head; |
244 | struct drm_mode_object base; | |
245 | const struct drm_framebuffer_funcs *funcs; | |
01f2c773 VS |
246 | unsigned int pitches[4]; |
247 | unsigned int offsets[4]; | |
e3eb3250 | 248 | uint64_t modifier[4]; |
f453ba04 DA |
249 | unsigned int width; |
250 | unsigned int height; | |
251 | /* depth can be 15 or 16 */ | |
252 | unsigned int depth; | |
253 | int bits_per_pixel; | |
254 | int flags; | |
308e5bcb | 255 | uint32_t pixel_format; /* fourcc format */ |
dd546591 GH |
256 | int hot_x; |
257 | int hot_y; | |
f453ba04 DA |
258 | struct list_head filp_head; |
259 | }; | |
260 | ||
261 | struct drm_property_blob { | |
262 | struct drm_mode_object base; | |
6bcacf51 | 263 | struct drm_device *dev; |
e2f5d2ea DS |
264 | struct list_head head_global; |
265 | struct list_head head_file; | |
ecbbe59b | 266 | size_t length; |
d63f5e6b | 267 | unsigned char data[]; |
f453ba04 DA |
268 | }; |
269 | ||
270 | struct drm_property_enum { | |
271 | uint64_t value; | |
272 | struct list_head head; | |
273 | char name[DRM_PROP_NAME_LEN]; | |
274 | }; | |
275 | ||
276 | struct drm_property { | |
277 | struct list_head head; | |
278 | struct drm_mode_object base; | |
279 | uint32_t flags; | |
280 | char name[DRM_PROP_NAME_LEN]; | |
281 | uint32_t num_values; | |
282 | uint64_t *values; | |
98f75de4 | 283 | struct drm_device *dev; |
f453ba04 | 284 | |
3758b341 | 285 | struct list_head enum_list; |
f453ba04 DA |
286 | }; |
287 | ||
288 | struct drm_crtc; | |
289 | struct drm_connector; | |
290 | struct drm_encoder; | |
d91d8a3f | 291 | struct drm_pending_vblank_event; |
8cf5c917 | 292 | struct drm_plane; |
3b336ec4 | 293 | struct drm_bridge; |
144ecb97 DV |
294 | struct drm_atomic_state; |
295 | ||
4490d4c7 DV |
296 | struct drm_crtc_helper_funcs; |
297 | struct drm_encoder_helper_funcs; | |
298 | struct drm_connector_helper_funcs; | |
299 | struct drm_plane_helper_funcs; | |
300 | ||
144ecb97 | 301 | /** |
cc4ceb48 | 302 | * struct drm_crtc_state - mutable CRTC state |
07cc0ef6 | 303 | * @crtc: backpointer to the CRTC |
144ecb97 | 304 | * @enable: whether the CRTC should be enabled, gates all other state |
d9b13620 | 305 | * @active: whether the CRTC is actively displaying (used for DPMS) |
fc596660 ML |
306 | * @planes_changed: planes on this crtc are updated |
307 | * @mode_changed: crtc_state->mode or crtc_state->enable has been changed | |
308 | * @active_changed: crtc_state->active has been toggled. | |
309 | * @connectors_changed: connectors to this crtc have been updated | |
5488dc16 LL |
310 | * @color_mgmt_changed: color management properties have changed (degamma or |
311 | * gamma LUT or CSC matrix) | |
6ddd388a | 312 | * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes |
4cd9fa52 | 313 | * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors |
e87a52b3 | 314 | * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached encoders |
623369e5 DV |
315 | * @last_vblank_count: for helpers and drivers to capture the vblank of the |
316 | * update to ensure framebuffer cleanup isn't done too early | |
2f324b42 | 317 | * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings |
144ecb97 | 318 | * @mode: current mode timings |
ac3ba4a5 | 319 | * @mode_blob: &drm_property_blob for @mode |
5488dc16 LL |
320 | * @degamma_lut: Lookup table for converting framebuffer pixel data |
321 | * before apply the conversion matrix | |
322 | * @ctm: Transformation matrix | |
323 | * @gamma_lut: Lookup table for converting pixel data after the | |
324 | * conversion matrix | |
144ecb97 DV |
325 | * @event: optional pointer to a DRM event to signal upon completion of the |
326 | * state update | |
327 | * @state: backpointer to global drm_atomic_state | |
d9b13620 DV |
328 | * |
329 | * Note that the distinction between @enable and @active is rather subtile: | |
330 | * Flipping @active while @enable is set without changing anything else may | |
331 | * never return in a failure from the ->atomic_check callback. Userspace assumes | |
332 | * that a DPMS On will always succeed. In other words: @enable controls resource | |
333 | * assignment, @active controls the actual hardware state. | |
144ecb97 DV |
334 | */ |
335 | struct drm_crtc_state { | |
07cc0ef6 DV |
336 | struct drm_crtc *crtc; |
337 | ||
cc4ceb48 | 338 | bool enable; |
d9b13620 | 339 | bool active; |
144ecb97 | 340 | |
c2fcd274 DV |
341 | /* computed state bits used by helpers and drivers */ |
342 | bool planes_changed : 1; | |
623369e5 | 343 | bool mode_changed : 1; |
eab3bbef | 344 | bool active_changed : 1; |
fc596660 | 345 | bool connectors_changed : 1; |
5488dc16 | 346 | bool color_mgmt_changed : 1; |
623369e5 | 347 | |
6ddd388a RC |
348 | /* attached planes bitmask: |
349 | * WARNING: transitional helpers do not maintain plane_mask so | |
350 | * drivers not converted over to atomic helpers should not rely | |
351 | * on plane_mask being accurate! | |
352 | */ | |
353 | u32 plane_mask; | |
354 | ||
4cd9fa52 | 355 | u32 connector_mask; |
e87a52b3 | 356 | u32 encoder_mask; |
4cd9fa52 | 357 | |
623369e5 DV |
358 | /* last_vblank_count: for vblank waits before cleanup */ |
359 | u32 last_vblank_count; | |
c2fcd274 | 360 | |
2f324b42 DV |
361 | /* adjusted_mode: for use by helpers and drivers */ |
362 | struct drm_display_mode adjusted_mode; | |
363 | ||
144ecb97 DV |
364 | struct drm_display_mode mode; |
365 | ||
99cf4a29 DS |
366 | /* blob property to expose current mode to atomic userspace */ |
367 | struct drm_property_blob *mode_blob; | |
368 | ||
5488dc16 LL |
369 | /* blob property to expose color management to userspace */ |
370 | struct drm_property_blob *degamma_lut; | |
371 | struct drm_property_blob *ctm; | |
372 | struct drm_property_blob *gamma_lut; | |
373 | ||
144ecb97 DV |
374 | struct drm_pending_vblank_event *event; |
375 | ||
376 | struct drm_atomic_state *state; | |
377 | }; | |
f453ba04 DA |
378 | |
379 | /** | |
3bf0401c | 380 | * struct drm_crtc_funcs - control CRTCs for a given device |
f453ba04 DA |
381 | * |
382 | * The drm_crtc_funcs structure is the central CRTC management structure | |
383 | * in the DRM. Each CRTC controls one or more connectors (note that the name | |
384 | * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. | |
385 | * connectors, not just CRTs). | |
386 | * | |
387 | * Each driver is responsible for filling out this structure at startup time, | |
388 | * in addition to providing other modesetting features, like i2c and DDC | |
389 | * bus accessors. | |
390 | */ | |
391 | struct drm_crtc_funcs { | |
88548636 DV |
392 | /** |
393 | * @reset: | |
394 | * | |
395 | * Reset CRTC hardware and software state to off. This function isn't | |
396 | * called by the core directly, only through drm_mode_config_reset(). | |
397 | * It's not a helper hook only for historical reasons. | |
398 | * | |
399 | * Atomic drivers can use drm_atomic_helper_crtc_reset() to reset | |
400 | * atomic state using this hook. | |
401 | */ | |
eb033556 | 402 | void (*reset)(struct drm_crtc *crtc); |
f453ba04 | 403 | |
f6da8c6e DV |
404 | /** |
405 | * @cursor_set: | |
406 | * | |
407 | * Update the cursor image. The cursor position is relative to the CRTC | |
408 | * and can be partially or fully outside of the visible area. | |
409 | * | |
410 | * Note that contrary to all other KMS functions the legacy cursor entry | |
411 | * points don't take a framebuffer object, but instead take directly a | |
412 | * raw buffer object id from the driver's buffer manager (which is | |
413 | * either GEM or TTM for current drivers). | |
414 | * | |
415 | * This entry point is deprecated, drivers should instead implement | |
416 | * universal plane support and register a proper cursor plane using | |
417 | * drm_crtc_init_with_planes(). | |
418 | * | |
419 | * This callback is optional | |
420 | * | |
421 | * RETURNS: | |
422 | * | |
423 | * 0 on success or a negative error code on failure. | |
424 | */ | |
f453ba04 DA |
425 | int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, |
426 | uint32_t handle, uint32_t width, uint32_t height); | |
f6da8c6e DV |
427 | |
428 | /** | |
429 | * @cursor_set2: | |
430 | * | |
431 | * Update the cursor image, including hotspot information. The hotspot | |
432 | * must not affect the cursor position in CRTC coordinates, but is only | |
433 | * meant as a hint for virtualized display hardware to coordinate the | |
434 | * guests and hosts cursor position. The cursor hotspot is relative to | |
435 | * the cursor image. Otherwise this works exactly like @cursor_set. | |
436 | * | |
437 | * This entry point is deprecated, drivers should instead implement | |
438 | * universal plane support and register a proper cursor plane using | |
439 | * drm_crtc_init_with_planes(). | |
440 | * | |
441 | * This callback is optional. | |
442 | * | |
443 | * RETURNS: | |
444 | * | |
445 | * 0 on success or a negative error code on failure. | |
446 | */ | |
4c813d4d DA |
447 | int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, |
448 | uint32_t handle, uint32_t width, uint32_t height, | |
449 | int32_t hot_x, int32_t hot_y); | |
f6da8c6e DV |
450 | |
451 | /** | |
452 | * @cursor_move: | |
453 | * | |
454 | * Update the cursor position. The cursor does not need to be visible | |
455 | * when this hook is called. | |
456 | * | |
457 | * This entry point is deprecated, drivers should instead implement | |
458 | * universal plane support and register a proper cursor plane using | |
459 | * drm_crtc_init_with_planes(). | |
460 | * | |
461 | * This callback is optional. | |
462 | * | |
463 | * RETURNS: | |
464 | * | |
465 | * 0 on success or a negative error code on failure. | |
466 | */ | |
f453ba04 DA |
467 | int (*cursor_move)(struct drm_crtc *crtc, int x, int y); |
468 | ||
f6da8c6e DV |
469 | /** |
470 | * @gamma_set: | |
471 | * | |
472 | * Set gamma on the CRTC. | |
473 | * | |
474 | * This callback is optional. | |
475 | * | |
476 | * NOTE: | |
477 | * | |
478 | * Drivers that support gamma tables and also fbdev emulation through | |
479 | * the provided helper library need to take care to fill out the gamma | |
480 | * hooks for both. Currently there's a bit an unfortunate duplication | |
481 | * going on, which should eventually be unified to just one set of | |
482 | * hooks. | |
483 | */ | |
7ea77283 ML |
484 | int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, |
485 | uint32_t size); | |
88548636 DV |
486 | |
487 | /** | |
488 | * @destroy: | |
489 | * | |
490 | * Clean up plane resources. This is only called at driver unload time | |
491 | * through drm_mode_config_cleanup() since a CRTC cannot be hotplugged | |
492 | * in DRM. | |
493 | */ | |
f453ba04 DA |
494 | void (*destroy)(struct drm_crtc *crtc); |
495 | ||
f6da8c6e DV |
496 | /** |
497 | * @set_config: | |
498 | * | |
499 | * This is the main legacy entry point to change the modeset state on a | |
500 | * CRTC. All the details of the desired configuration are passed in a | |
501 | * struct &drm_mode_set - see there for details. | |
502 | * | |
503 | * Drivers implementing atomic modeset should use | |
504 | * drm_atomic_helper_set_config() to implement this hook. | |
505 | * | |
506 | * RETURNS: | |
507 | * | |
508 | * 0 on success or a negative error code on failure. | |
509 | */ | |
f453ba04 | 510 | int (*set_config)(struct drm_mode_set *set); |
d91d8a3f | 511 | |
f6da8c6e DV |
512 | /** |
513 | * @page_flip: | |
514 | * | |
515 | * Legacy entry point to schedule a flip to the given framebuffer. | |
516 | * | |
517 | * Page flipping is a synchronization mechanism that replaces the frame | |
518 | * buffer being scanned out by the CRTC with a new frame buffer during | |
519 | * vertical blanking, avoiding tearing (except when requested otherwise | |
520 | * through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application | |
521 | * requests a page flip the DRM core verifies that the new frame buffer | |
522 | * is large enough to be scanned out by the CRTC in the currently | |
523 | * configured mode and then calls the CRTC ->page_flip() operation with a | |
524 | * pointer to the new frame buffer. | |
525 | * | |
526 | * The driver must wait for any pending rendering to the new framebuffer | |
527 | * to complete before executing the flip. It should also wait for any | |
528 | * pending rendering from other drivers if the underlying buffer is a | |
529 | * shared dma-buf. | |
530 | * | |
531 | * An application can request to be notified when the page flip has | |
532 | * completed. The drm core will supply a struct &drm_event in the event | |
533 | * parameter in this case. This can be handled by the | |
534 | * drm_crtc_send_vblank_event() function, which the driver should call on | |
535 | * the provided event upon completion of the flip. Note that if | |
536 | * the driver supports vblank signalling and timestamping the vblank | |
537 | * counters and timestamps must agree with the ones returned from page | |
538 | * flip events. With the current vblank helper infrastructure this can | |
539 | * be achieved by holding a vblank reference while the page flip is | |
540 | * pending, acquired through drm_crtc_vblank_get() and released with | |
541 | * drm_crtc_vblank_put(). Drivers are free to implement their own vblank | |
542 | * counter and timestamp tracking though, e.g. if they have accurate | |
543 | * timestamp registers in hardware. | |
544 | * | |
545 | * FIXME: | |
546 | * | |
547 | * Up to that point drivers need to manage events themselves and can use | |
548 | * even->base.list freely for that. Specifically they need to ensure | |
549 | * that they don't send out page flip (or vblank) events for which the | |
550 | * corresponding drm file has been closed already. The drm core | |
551 | * unfortunately does not (yet) take care of that. Therefore drivers | |
552 | * currently must clean up and release pending events in their | |
553 | * ->preclose driver function. | |
554 | * | |
555 | * This callback is optional. | |
556 | * | |
557 | * NOTE: | |
558 | * | |
559 | * Very early versions of the KMS ABI mandated that the driver must | |
560 | * block (but not reject) any rendering to the old framebuffer until the | |
561 | * flip operation has completed and the old framebuffer is no longer | |
562 | * visible. This requirement has been lifted, and userspace is instead | |
563 | * expected to request delivery of an event and wait with recycling old | |
564 | * buffers until such has been received. | |
565 | * | |
566 | * RETURNS: | |
567 | * | |
568 | * 0 on success or a negative error code on failure. Note that if a | |
569 | * ->page_flip() operation is already pending the callback should return | |
570 | * -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode | |
571 | * or just runtime disabled through DPMS respectively the new atomic | |
4cba6850 DV |
572 | * "ACTIVE" state) should result in an -EINVAL error code. Note that |
573 | * drm_atomic_helper_page_flip() checks this already for atomic drivers. | |
d91d8a3f KH |
574 | */ |
575 | int (*page_flip)(struct drm_crtc *crtc, | |
576 | struct drm_framebuffer *fb, | |
ed8d1975 KP |
577 | struct drm_pending_vblank_event *event, |
578 | uint32_t flags); | |
bffd9de0 | 579 | |
88548636 DV |
580 | /** |
581 | * @set_property: | |
582 | * | |
583 | * This is the legacy entry point to update a property attached to the | |
584 | * CRTC. | |
585 | * | |
586 | * Drivers implementing atomic modeset should use | |
587 | * drm_atomic_helper_crtc_set_property() to implement this hook. | |
588 | * | |
589 | * This callback is optional if the driver does not support any legacy | |
590 | * driver-private properties. | |
591 | * | |
592 | * RETURNS: | |
593 | * | |
594 | * 0 on success or a negative error code on failure. | |
595 | */ | |
bffd9de0 PZ |
596 | int (*set_property)(struct drm_crtc *crtc, |
597 | struct drm_property *property, uint64_t val); | |
144ecb97 | 598 | |
88548636 DV |
599 | /** |
600 | * @atomic_duplicate_state: | |
601 | * | |
602 | * Duplicate the current atomic state for this CRTC and return it. | |
603 | * The core and helpers gurantee that any atomic state duplicated with | |
604 | * this hook and still owned by the caller (i.e. not transferred to the | |
605 | * driver by calling ->atomic_commit() from struct | |
606 | * &drm_mode_config_funcs) will be cleaned up by calling the | |
607 | * @atomic_destroy_state hook in this structure. | |
608 | * | |
609 | * Atomic drivers which don't subclass struct &drm_crtc should use | |
610 | * drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the | |
611 | * state structure to extend it with driver-private state should use | |
612 | * __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is | |
613 | * duplicated in a consistent fashion across drivers. | |
614 | * | |
615 | * It is an error to call this hook before crtc->state has been | |
616 | * initialized correctly. | |
617 | * | |
618 | * NOTE: | |
619 | * | |
620 | * If the duplicate state references refcounted resources this hook must | |
621 | * acquire a reference for each of them. The driver must release these | |
622 | * references again in @atomic_destroy_state. | |
623 | * | |
624 | * RETURNS: | |
625 | * | |
626 | * Duplicated atomic state or NULL when the allocation failed. | |
627 | */ | |
144ecb97 | 628 | struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); |
88548636 DV |
629 | |
630 | /** | |
631 | * @atomic_destroy_state: | |
632 | * | |
633 | * Destroy a state duplicated with @atomic_duplicate_state and release | |
634 | * or unreference all resources it references | |
635 | */ | |
144ecb97 | 636 | void (*atomic_destroy_state)(struct drm_crtc *crtc, |
cc4ceb48 | 637 | struct drm_crtc_state *state); |
88548636 DV |
638 | |
639 | /** | |
640 | * @atomic_set_property: | |
641 | * | |
642 | * Decode a driver-private property value and store the decoded value | |
643 | * into the passed-in state structure. Since the atomic core decodes all | |
644 | * standardized properties (even for extensions beyond the core set of | |
645 | * properties which might not be implemented by all drivers) this | |
646 | * requires drivers to subclass the state structure. | |
647 | * | |
648 | * Such driver-private properties should really only be implemented for | |
649 | * truly hardware/vendor specific state. Instead it is preferred to | |
650 | * standardize atomic extension and decode the properties used to expose | |
651 | * such an extension in the core. | |
652 | * | |
653 | * Do not call this function directly, use | |
654 | * drm_atomic_crtc_set_property() instead. | |
655 | * | |
656 | * This callback is optional if the driver does not support any | |
657 | * driver-private atomic properties. | |
658 | * | |
659 | * NOTE: | |
660 | * | |
661 | * This function is called in the state assembly phase of atomic | |
662 | * modesets, which can be aborted for any reason (including on | |
663 | * userspace's request to just check whether a configuration would be | |
664 | * possible). Drivers MUST NOT touch any persistent state (hardware or | |
665 | * software) or data structures except the passed in @state parameter. | |
666 | * | |
667 | * Also since userspace controls in which order properties are set this | |
668 | * function must not do any input validation (since the state update is | |
669 | * incomplete and hence likely inconsistent). Instead any such input | |
670 | * validation must be done in the various atomic_check callbacks. | |
671 | * | |
672 | * RETURNS: | |
673 | * | |
674 | * 0 if the property has been found, -EINVAL if the property isn't | |
675 | * implemented by the driver (which should never happen, the core only | |
676 | * asks for properties attached to this CRTC). No other validation is | |
677 | * allowed by the driver. The core already checks that the property | |
678 | * value is within the range (integer, valid enum value, ...) the driver | |
679 | * set when registering the property. | |
680 | */ | |
144ecb97 DV |
681 | int (*atomic_set_property)(struct drm_crtc *crtc, |
682 | struct drm_crtc_state *state, | |
683 | struct drm_property *property, | |
684 | uint64_t val); | |
88548636 DV |
685 | /** |
686 | * @atomic_get_property: | |
687 | * | |
688 | * Reads out the decoded driver-private property. This is used to | |
c6b0ca3e | 689 | * implement the GETCRTC IOCTL. |
88548636 DV |
690 | * |
691 | * Do not call this function directly, use | |
692 | * drm_atomic_crtc_get_property() instead. | |
693 | * | |
694 | * This callback is optional if the driver does not support any | |
695 | * driver-private atomic properties. | |
696 | * | |
697 | * RETURNS: | |
698 | * | |
699 | * 0 on success, -EINVAL if the property isn't implemented by the | |
700 | * driver (which should never happen, the core only asks for | |
701 | * properties attached to this CRTC). | |
702 | */ | |
ac9c9256 RC |
703 | int (*atomic_get_property)(struct drm_crtc *crtc, |
704 | const struct drm_crtc_state *state, | |
705 | struct drm_property *property, | |
706 | uint64_t *val); | |
f453ba04 DA |
707 | }; |
708 | ||
709 | /** | |
3bf0401c | 710 | * struct drm_crtc - central CRTC control structure |
7749163e | 711 | * @dev: parent DRM device |
2c0c33d4 | 712 | * @port: OF node used by drm_of_find_possible_crtcs() |
7749163e | 713 | * @head: list management |
ac3ba4a5 | 714 | * @name: human readable name, can be overwritten by the driver |
51fd371b | 715 | * @mutex: per-CRTC locking |
7749163e | 716 | * @base: base KMS object for ID tracking etc. |
e13161af MR |
717 | * @primary: primary plane for this CRTC |
718 | * @cursor: cursor plane for this CRTC | |
2c0c33d4 DV |
719 | * @cursor_x: current x position of the cursor, used for universal cursor planes |
720 | * @cursor_y: current y position of the cursor, used for universal cursor planes | |
f453ba04 | 721 | * @enabled: is this CRTC enabled? |
7749163e JB |
722 | * @mode: current mode timings |
723 | * @hwmode: mode timings as programmed to hw regs | |
f453ba04 DA |
724 | * @x: x position on screen |
725 | * @y: y position on screen | |
f453ba04 | 726 | * @funcs: CRTC control functions |
7749163e JB |
727 | * @gamma_size: size of gamma ramp |
728 | * @gamma_store: gamma ramp values | |
7749163e | 729 | * @helper_private: mid-layer private data |
bffd9de0 | 730 | * @properties: property tracking for this CRTC |
f453ba04 DA |
731 | * |
732 | * Each CRTC may have one or more connectors associated with it. This structure | |
733 | * allows the CRTC to be controlled. | |
734 | */ | |
735 | struct drm_crtc { | |
736 | struct drm_device *dev; | |
7e435aad | 737 | struct device_node *port; |
f453ba04 DA |
738 | struct list_head head; |
739 | ||
fa3ab4c2 VS |
740 | char *name; |
741 | ||
ac3ba4a5 DV |
742 | /** |
743 | * @mutex: | |
29494c17 DV |
744 | * |
745 | * This provides a read lock for the overall crtc state (mode, dpms | |
746 | * state, ...) and a write lock for everything which can be update | |
ac3ba4a5 DV |
747 | * without a full modeset (fb, cursor data, crtc properties ...). Full |
748 | * modeset also need to grab dev->mode_config.connection_mutex. | |
29494c17 | 749 | */ |
51fd371b | 750 | struct drm_modeset_lock mutex; |
29494c17 | 751 | |
f453ba04 DA |
752 | struct drm_mode_object base; |
753 | ||
e13161af MR |
754 | /* primary and cursor planes for CRTC */ |
755 | struct drm_plane *primary; | |
756 | struct drm_plane *cursor; | |
757 | ||
490d3d1b CW |
758 | /* position inside the mode_config.list, can be used as a [] idx */ |
759 | unsigned index; | |
760 | ||
161d0dc1 MR |
761 | /* position of cursor plane on crtc */ |
762 | int cursor_x; | |
763 | int cursor_y; | |
764 | ||
f453ba04 DA |
765 | bool enabled; |
766 | ||
27641c3f | 767 | /* Requested mode from modesetting. */ |
f453ba04 DA |
768 | struct drm_display_mode mode; |
769 | ||
27641c3f MK |
770 | /* Programmed mode in hw, after adjustments for encoders, |
771 | * crtc, panel scaling etc. Needed for timestamping etc. | |
772 | */ | |
773 | struct drm_display_mode hwmode; | |
774 | ||
f453ba04 | 775 | int x, y; |
f453ba04 DA |
776 | const struct drm_crtc_funcs *funcs; |
777 | ||
5488dc16 | 778 | /* Legacy FB CRTC gamma size for reporting to userspace */ |
f453ba04 DA |
779 | uint32_t gamma_size; |
780 | uint16_t *gamma_store; | |
781 | ||
782 | /* if you are using the helper */ | |
4490d4c7 | 783 | const struct drm_crtc_helper_funcs *helper_private; |
bffd9de0 PZ |
784 | |
785 | struct drm_object_properties properties; | |
d059f652 | 786 | |
3b24f7d6 DV |
787 | /** |
788 | * @state: | |
789 | * | |
790 | * Current atomic state for this CRTC. | |
791 | */ | |
144ecb97 DV |
792 | struct drm_crtc_state *state; |
793 | ||
3b24f7d6 DV |
794 | /** |
795 | * @commit_list: | |
796 | * | |
797 | * List of &drm_crtc_commit structures tracking pending commits. | |
798 | * Protected by @commit_lock. This list doesn't hold its own full | |
799 | * reference, but burrows it from the ongoing commit. Commit entries | |
800 | * must be removed from this list once the commit is fully completed, | |
801 | * but before it's correspoding &drm_atomic_state gets destroyed. | |
802 | */ | |
803 | struct list_head commit_list; | |
804 | ||
805 | /** | |
806 | * @commit_lock: | |
807 | * | |
808 | * Spinlock to protect @commit_list. | |
809 | */ | |
810 | spinlock_t commit_lock; | |
811 | ||
812 | /** | |
813 | * @acquire_ctx: | |
814 | * | |
815 | * Per-CRTC implicit acquire context used by atomic drivers for legacy | |
816 | * IOCTLs, so that atomic drivers can get at the locking acquire | |
817 | * context. | |
d059f652 DV |
818 | */ |
819 | struct drm_modeset_acquire_ctx *acquire_ctx; | |
f453ba04 DA |
820 | }; |
821 | ||
144ecb97 DV |
822 | /** |
823 | * struct drm_connector_state - mutable connector state | |
07cc0ef6 | 824 | * @connector: backpointer to the connector |
cc4ceb48 | 825 | * @crtc: CRTC to connect connector to, NULL if disabled |
623369e5 | 826 | * @best_encoder: can be used by helpers and drivers to select the encoder |
144ecb97 DV |
827 | * @state: backpointer to global drm_atomic_state |
828 | */ | |
829 | struct drm_connector_state { | |
07cc0ef6 DV |
830 | struct drm_connector *connector; |
831 | ||
6ddd388a | 832 | struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_connector() */ |
144ecb97 | 833 | |
623369e5 DV |
834 | struct drm_encoder *best_encoder; |
835 | ||
144ecb97 DV |
836 | struct drm_atomic_state *state; |
837 | }; | |
f453ba04 DA |
838 | |
839 | /** | |
3bf0401c | 840 | * struct drm_connector_funcs - control connectors on a given device |
144ecb97 | 841 | * |
f453ba04 DA |
842 | * Each CRTC may have one or more connectors attached to it. The functions |
843 | * below allow the core DRM code to control connectors, enumerate available modes, | |
844 | * etc. | |
845 | */ | |
846 | struct drm_connector_funcs { | |
6fe14acd DV |
847 | /** |
848 | * @dpms: | |
849 | * | |
850 | * Legacy entry point to set the per-connector DPMS state. Legacy DPMS | |
851 | * is exposed as a standard property on the connector, but diverted to | |
852 | * this callback in the drm core. Note that atomic drivers don't | |
853 | * implement the 4 level DPMS support on the connector any more, but | |
854 | * instead only have an on/off "ACTIVE" property on the CRTC object. | |
855 | * | |
856 | * Drivers implementing atomic modeset should use | |
857 | * drm_atomic_helper_connector_dpms() to implement this hook. | |
858 | * | |
859 | * RETURNS: | |
860 | * | |
861 | * 0 on success or a negative error code on failure. | |
862 | */ | |
9a69a9ac | 863 | int (*dpms)(struct drm_connector *connector, int mode); |
88548636 DV |
864 | |
865 | /** | |
866 | * @reset: | |
867 | * | |
868 | * Reset connector hardware and software state to off. This function isn't | |
869 | * called by the core directly, only through drm_mode_config_reset(). | |
870 | * It's not a helper hook only for historical reasons. | |
871 | * | |
872 | * Atomic drivers can use drm_atomic_helper_connector_reset() to reset | |
873 | * atomic state using this hook. | |
874 | */ | |
eb033556 | 875 | void (*reset)(struct drm_connector *connector); |
930a9e28 | 876 | |
6fe14acd DV |
877 | /** |
878 | * @detect: | |
879 | * | |
880 | * Check to see if anything is attached to the connector. The parameter | |
881 | * force is set to false whilst polling, true when checking the | |
882 | * connector due to a user request. force can be used by the driver to | |
883 | * avoid expensive, destructive operations during automated probing. | |
884 | * | |
885 | * FIXME: | |
886 | * | |
887 | * Note that this hook is only called by the probe helper. It's not in | |
888 | * the helper library vtable purely for historical reasons. The only DRM | |
889 | * core entry point to probe connector state is @fill_modes. | |
890 | * | |
891 | * RETURNS: | |
892 | * | |
893 | * drm_connector_status indicating the connector's status. | |
930a9e28 | 894 | */ |
7b334fcb | 895 | enum drm_connector_status (*detect)(struct drm_connector *connector, |
930a9e28 | 896 | bool force); |
6fe14acd DV |
897 | |
898 | /** | |
899 | * @force: | |
900 | * | |
901 | * This function is called to update internal encoder state when the | |
902 | * connector is forced to a certain state by userspace, either through | |
903 | * the sysfs interfaces or on the kernel cmdline. In that case the | |
904 | * @detect callback isn't called. | |
905 | * | |
906 | * FIXME: | |
907 | * | |
908 | * Note that this hook is only called by the probe helper. It's not in | |
909 | * the helper library vtable purely for historical reasons. The only DRM | |
910 | * core entry point to probe connector state is @fill_modes. | |
911 | */ | |
912 | void (*force)(struct drm_connector *connector); | |
913 | ||
914 | /** | |
915 | * @fill_modes: | |
916 | * | |
917 | * Entry point for output detection and basic mode validation. The | |
918 | * driver should reprobe the output if needed (e.g. when hotplug | |
919 | * handling is unreliable), add all detected modes to connector->modes | |
920 | * and filter out any the device can't support in any configuration. It | |
921 | * also needs to filter out any modes wider or higher than the | |
922 | * parameters max_width and max_height indicate. | |
923 | * | |
924 | * The drivers must also prune any modes no longer valid from | |
925 | * connector->modes. Furthermore it must update connector->status and | |
926 | * connector->edid. If no EDID has been received for this output | |
927 | * connector->edid must be NULL. | |
928 | * | |
929 | * Drivers using the probe helpers should use | |
930 | * drm_helper_probe_single_connector_modes() or | |
931 | * drm_helper_probe_single_connector_modes_nomerge() to implement this | |
932 | * function. | |
933 | * | |
934 | * RETURNS: | |
935 | * | |
936 | * The number of modes detected and filled into connector->modes. | |
937 | */ | |
40a518d9 | 938 | int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); |
88548636 DV |
939 | |
940 | /** | |
941 | * @set_property: | |
942 | * | |
943 | * This is the legacy entry point to update a property attached to the | |
944 | * connector. | |
945 | * | |
946 | * Drivers implementing atomic modeset should use | |
947 | * drm_atomic_helper_connector_set_property() to implement this hook. | |
948 | * | |
949 | * This callback is optional if the driver does not support any legacy | |
950 | * driver-private properties. | |
951 | * | |
952 | * RETURNS: | |
953 | * | |
954 | * 0 on success or a negative error code on failure. | |
955 | */ | |
f453ba04 DA |
956 | int (*set_property)(struct drm_connector *connector, struct drm_property *property, |
957 | uint64_t val); | |
88548636 DV |
958 | |
959 | /** | |
960 | * @destroy: | |
961 | * | |
962 | * Clean up connector resources. This is called at driver unload time | |
963 | * through drm_mode_config_cleanup(). It can also be called at runtime | |
964 | * when a connector is being hot-unplugged for drivers that support | |
965 | * connector hotplugging (e.g. DisplayPort MST). | |
966 | */ | |
f453ba04 | 967 | void (*destroy)(struct drm_connector *connector); |
144ecb97 | 968 | |
88548636 DV |
969 | /** |
970 | * @atomic_duplicate_state: | |
971 | * | |
972 | * Duplicate the current atomic state for this connector and return it. | |
973 | * The core and helpers gurantee that any atomic state duplicated with | |
974 | * this hook and still owned by the caller (i.e. not transferred to the | |
975 | * driver by calling ->atomic_commit() from struct | |
976 | * &drm_mode_config_funcs) will be cleaned up by calling the | |
977 | * @atomic_destroy_state hook in this structure. | |
978 | * | |
979 | * Atomic drivers which don't subclass struct &drm_connector_state should use | |
980 | * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the | |
981 | * state structure to extend it with driver-private state should use | |
982 | * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is | |
983 | * duplicated in a consistent fashion across drivers. | |
984 | * | |
985 | * It is an error to call this hook before connector->state has been | |
986 | * initialized correctly. | |
987 | * | |
988 | * NOTE: | |
989 | * | |
990 | * If the duplicate state references refcounted resources this hook must | |
991 | * acquire a reference for each of them. The driver must release these | |
992 | * references again in @atomic_destroy_state. | |
993 | * | |
994 | * RETURNS: | |
995 | * | |
996 | * Duplicated atomic state or NULL when the allocation failed. | |
997 | */ | |
144ecb97 | 998 | struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); |
88548636 DV |
999 | |
1000 | /** | |
1001 | * @atomic_destroy_state: | |
1002 | * | |
1003 | * Destroy a state duplicated with @atomic_duplicate_state and release | |
1004 | * or unreference all resources it references | |
1005 | */ | |
144ecb97 | 1006 | void (*atomic_destroy_state)(struct drm_connector *connector, |
cc4ceb48 | 1007 | struct drm_connector_state *state); |
88548636 DV |
1008 | |
1009 | /** | |
1010 | * @atomic_set_property: | |
1011 | * | |
1012 | * Decode a driver-private property value and store the decoded value | |
1013 | * into the passed-in state structure. Since the atomic core decodes all | |
1014 | * standardized properties (even for extensions beyond the core set of | |
1015 | * properties which might not be implemented by all drivers) this | |
1016 | * requires drivers to subclass the state structure. | |
1017 | * | |
1018 | * Such driver-private properties should really only be implemented for | |
1019 | * truly hardware/vendor specific state. Instead it is preferred to | |
1020 | * standardize atomic extension and decode the properties used to expose | |
1021 | * such an extension in the core. | |
1022 | * | |
1023 | * Do not call this function directly, use | |
1024 | * drm_atomic_connector_set_property() instead. | |
1025 | * | |
1026 | * This callback is optional if the driver does not support any | |
1027 | * driver-private atomic properties. | |
1028 | * | |
1029 | * NOTE: | |
1030 | * | |
1031 | * This function is called in the state assembly phase of atomic | |
1032 | * modesets, which can be aborted for any reason (including on | |
1033 | * userspace's request to just check whether a configuration would be | |
1034 | * possible). Drivers MUST NOT touch any persistent state (hardware or | |
1035 | * software) or data structures except the passed in @state parameter. | |
1036 | * | |
1037 | * Also since userspace controls in which order properties are set this | |
1038 | * function must not do any input validation (since the state update is | |
1039 | * incomplete and hence likely inconsistent). Instead any such input | |
1040 | * validation must be done in the various atomic_check callbacks. | |
1041 | * | |
1042 | * RETURNS: | |
1043 | * | |
1044 | * 0 if the property has been found, -EINVAL if the property isn't | |
1045 | * implemented by the driver (which shouldn't ever happen, the core only | |
1046 | * asks for properties attached to this connector). No other validation | |
1047 | * is allowed by the driver. The core already checks that the property | |
1048 | * value is within the range (integer, valid enum value, ...) the driver | |
1049 | * set when registering the property. | |
1050 | */ | |
144ecb97 DV |
1051 | int (*atomic_set_property)(struct drm_connector *connector, |
1052 | struct drm_connector_state *state, | |
1053 | struct drm_property *property, | |
1054 | uint64_t val); | |
88548636 DV |
1055 | |
1056 | /** | |
1057 | * @atomic_get_property: | |
1058 | * | |
1059 | * Reads out the decoded driver-private property. This is used to | |
c6b0ca3e | 1060 | * implement the GETCONNECTOR IOCTL. |
88548636 DV |
1061 | * |
1062 | * Do not call this function directly, use | |
1063 | * drm_atomic_connector_get_property() instead. | |
1064 | * | |
1065 | * This callback is optional if the driver does not support any | |
1066 | * driver-private atomic properties. | |
1067 | * | |
1068 | * RETURNS: | |
1069 | * | |
1070 | * 0 on success, -EINVAL if the property isn't implemented by the | |
1071 | * driver (which shouldn't ever happen, the core only asks for | |
1072 | * properties attached to this connector). | |
1073 | */ | |
ac9c9256 RC |
1074 | int (*atomic_get_property)(struct drm_connector *connector, |
1075 | const struct drm_connector_state *state, | |
1076 | struct drm_property *property, | |
1077 | uint64_t *val); | |
f453ba04 DA |
1078 | }; |
1079 | ||
6c3db920 | 1080 | /** |
3bf0401c | 1081 | * struct drm_encoder_funcs - encoder controls |
6c3db920 JB |
1082 | * |
1083 | * Encoders sit between CRTCs and connectors. | |
1084 | */ | |
f453ba04 | 1085 | struct drm_encoder_funcs { |
88548636 DV |
1086 | /** |
1087 | * @reset: | |
1088 | * | |
1089 | * Reset encoder hardware and software state to off. This function isn't | |
1090 | * called by the core directly, only through drm_mode_config_reset(). | |
1091 | * It's not a helper hook only for historical reasons. | |
1092 | */ | |
eb033556 | 1093 | void (*reset)(struct drm_encoder *encoder); |
88548636 DV |
1094 | |
1095 | /** | |
1096 | * @destroy: | |
1097 | * | |
1098 | * Clean up encoder resources. This is only called at driver unload time | |
1099 | * through drm_mode_config_cleanup() since an encoder cannot be | |
1100 | * hotplugged in DRM. | |
1101 | */ | |
f453ba04 DA |
1102 | void (*destroy)(struct drm_encoder *encoder); |
1103 | }; | |
1104 | ||
afe887df | 1105 | #define DRM_CONNECTOR_MAX_ENCODER 3 |
f453ba04 DA |
1106 | |
1107 | /** | |
3bf0401c | 1108 | * struct drm_encoder - central DRM encoder structure |
db3e4499 JB |
1109 | * @dev: parent DRM device |
1110 | * @head: list management | |
1111 | * @base: base KMS object | |
ac3ba4a5 | 1112 | * @name: human readable name, can be overwritten by the driver |
db3e4499 JB |
1113 | * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h |
1114 | * @possible_crtcs: bitmask of potential CRTC bindings | |
1115 | * @possible_clones: bitmask of potential sibling encoders for cloning | |
1116 | * @crtc: currently bound CRTC | |
3b336ec4 | 1117 | * @bridge: bridge associated to the encoder |
db3e4499 JB |
1118 | * @funcs: control functions |
1119 | * @helper_private: mid-layer private data | |
1120 | * | |
1121 | * CRTCs drive pixels to encoders, which convert them into signals | |
1122 | * appropriate for a given connector or set of connectors. | |
f453ba04 DA |
1123 | */ |
1124 | struct drm_encoder { | |
1125 | struct drm_device *dev; | |
1126 | struct list_head head; | |
1127 | ||
1128 | struct drm_mode_object base; | |
e5748946 | 1129 | char *name; |
f453ba04 | 1130 | int encoder_type; |
490d3d1b CW |
1131 | |
1132 | /* position inside the mode_config.list, can be used as a [] idx */ | |
1133 | unsigned index; | |
1134 | ||
f453ba04 DA |
1135 | uint32_t possible_crtcs; |
1136 | uint32_t possible_clones; | |
1137 | ||
1138 | struct drm_crtc *crtc; | |
3b336ec4 | 1139 | struct drm_bridge *bridge; |
f453ba04 | 1140 | const struct drm_encoder_funcs *funcs; |
4490d4c7 | 1141 | const struct drm_encoder_helper_funcs *helper_private; |
f453ba04 DA |
1142 | }; |
1143 | ||
eb1f8e4f DA |
1144 | /* should we poll this connector for connects and disconnects */ |
1145 | /* hot plug detectable */ | |
1146 | #define DRM_CONNECTOR_POLL_HPD (1 << 0) | |
1147 | /* poll for connections */ | |
1148 | #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) | |
1149 | /* can cleanly poll for disconnections without flickering the screen */ | |
1150 | /* DACs should rarely do this without a lot of testing */ | |
1151 | #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) | |
1152 | ||
76adaa34 WF |
1153 | #define MAX_ELD_BYTES 128 |
1154 | ||
f453ba04 | 1155 | /** |
3bf0401c | 1156 | * struct drm_connector - central DRM connector control structure |
72252548 JB |
1157 | * @dev: parent DRM device |
1158 | * @kdev: kernel device for sysfs attributes | |
1159 | * @attr: sysfs attributes | |
1160 | * @head: list management | |
1161 | * @base: base KMS object | |
ac3ba4a5 DV |
1162 | * @name: human readable name, can be overwritten by the driver |
1163 | * @connector_id: compacted connector id useful indexing arrays | |
72252548 JB |
1164 | * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h |
1165 | * @connector_type_id: index into connector type enum | |
f453ba04 DA |
1166 | * @interlace_allowed: can this connector handle interlaced modes? |
1167 | * @doublescan_allowed: can this connector handle doublescan? | |
2c0c33d4 | 1168 | * @stereo_allowed: can this connector handle stereo modes? |
72252548 JB |
1169 | * @modes: modes available on this connector (from fill_modes() + user) |
1170 | * @status: one of the drm_connector_status enums (connected, not, or unknown) | |
1171 | * @probed_modes: list of modes derived directly from the display | |
1172 | * @display_info: information about attached display (e.g. from EDID) | |
f453ba04 | 1173 | * @funcs: connector control functions |
72252548 | 1174 | * @edid_blob_ptr: DRM property containing EDID if present |
7e3bdf4a | 1175 | * @properties: property tracking for this connector |
72252548 JB |
1176 | * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling |
1177 | * @dpms: current dpms state | |
1178 | * @helper_private: mid-layer private data | |
2c0c33d4 | 1179 | * @cmdline_mode: mode line parsed from the kernel cmdline for this connector |
72252548 | 1180 | * @force: a %DRM_FORCE_<foo> state for forced mode sets |
2c0c33d4 | 1181 | * @override_edid: has the EDID been overwritten through debugfs for testing? |
72252548 JB |
1182 | * @encoder_ids: valid encoders for this connector |
1183 | * @encoder: encoder driving this connector, if any | |
1184 | * @eld: EDID-like data, if present | |
1185 | * @dvi_dual: dual link DVI, if found | |
1186 | * @max_tmds_clock: max clock rate, if found | |
1187 | * @latency_present: AV delay info from ELD, if found | |
1188 | * @video_latency: video latency info from ELD, if found | |
1189 | * @audio_latency: audio latency info from ELD, if found | |
1190 | * @null_edid_counter: track sinks that give us all zeros for the EDID | |
2c0c33d4 | 1191 | * @bad_edid_counter: track sinks that give us an EDID with invalid checksum |
ac6f2e29 | 1192 | * @edid_corrupt: indicates whether the last read EDID was corrupt |
2c0c33d4 | 1193 | * @debugfs_entry: debugfs directory for this connector |
144ecb97 | 1194 | * @state: current atomic state for this connector |
40d9b043 DA |
1195 | * @has_tile: is this connector connected to a tiled monitor |
1196 | * @tile_group: tile group for the connected monitor | |
1197 | * @tile_is_single_monitor: whether the tile is one monitor housing | |
1198 | * @num_h_tile: number of horizontal tiles in the tile group | |
1199 | * @num_v_tile: number of vertical tiles in the tile group | |
1200 | * @tile_h_loc: horizontal location of this tile | |
1201 | * @tile_v_loc: vertical location of this tile | |
1202 | * @tile_h_size: horizontal size of this tile. | |
1203 | * @tile_v_size: vertical size of this tile. | |
f453ba04 DA |
1204 | * |
1205 | * Each connector may be connected to one or more CRTCs, or may be clonable by | |
1206 | * another connector if they can share a CRTC. Each connector also has a specific | |
1207 | * position in the broader display (referred to as a 'screen' though it could | |
1208 | * span multiple monitors). | |
1209 | */ | |
1210 | struct drm_connector { | |
1211 | struct drm_device *dev; | |
5bdebb18 | 1212 | struct device *kdev; |
f453ba04 DA |
1213 | struct device_attribute *attr; |
1214 | struct list_head head; | |
1215 | ||
1216 | struct drm_mode_object base; | |
1217 | ||
2abdd313 | 1218 | char *name; |
5fff80bb | 1219 | int connector_id; |
f453ba04 DA |
1220 | int connector_type; |
1221 | int connector_type_id; | |
1222 | bool interlace_allowed; | |
1223 | bool doublescan_allowed; | |
560a067a | 1224 | bool stereo_allowed; |
f453ba04 DA |
1225 | struct list_head modes; /* list of modes on this connector */ |
1226 | ||
f453ba04 DA |
1227 | enum drm_connector_status status; |
1228 | ||
1229 | /* these are modes added by probing with DDC or the BIOS */ | |
1230 | struct list_head probed_modes; | |
1231 | ||
1232 | struct drm_display_info display_info; | |
1233 | const struct drm_connector_funcs *funcs; | |
1234 | ||
f453ba04 | 1235 | struct drm_property_blob *edid_blob_ptr; |
7e3bdf4a | 1236 | struct drm_object_properties properties; |
f453ba04 | 1237 | |
ac3ba4a5 DV |
1238 | /** |
1239 | * @path_blob_ptr: | |
1240 | * | |
1241 | * DRM blob property data for the DP MST path property. | |
1242 | */ | |
43aba7eb DA |
1243 | struct drm_property_blob *path_blob_ptr; |
1244 | ||
ac3ba4a5 DV |
1245 | /** |
1246 | * @tile_blob_ptr: | |
1247 | * | |
1248 | * DRM blob property data for the tile property (used mostly by DP MST). | |
1249 | * This is meant for screens which are driven through separate display | |
1250 | * pipelines represented by &drm_crtc, which might not be running with | |
1251 | * genlocked clocks. For tiled panels which are genlocked, like | |
1252 | * dual-link LVDS or dual-link DSI, the driver should try to not expose | |
1253 | * the tiling and virtualize both &drm_crtc and &drm_plane if needed. | |
1254 | */ | |
6f134d7b DA |
1255 | struct drm_property_blob *tile_blob_ptr; |
1256 | ||
eb1f8e4f DA |
1257 | uint8_t polled; /* DRM_CONNECTOR_POLL_* */ |
1258 | ||
c9fb15f6 KP |
1259 | /* requested DPMS state */ |
1260 | int dpms; | |
1261 | ||
4490d4c7 | 1262 | const struct drm_connector_helper_funcs *helper_private; |
f453ba04 | 1263 | |
d50ba256 | 1264 | /* forced on connector */ |
eaf99c74 | 1265 | struct drm_cmdline_mode cmdline_mode; |
d50ba256 | 1266 | enum drm_connector_force force; |
4cf2b281 | 1267 | bool override_edid; |
f453ba04 | 1268 | uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; |
f453ba04 | 1269 | struct drm_encoder *encoder; /* currently active encoder */ |
4a9a8b71 | 1270 | |
76adaa34 WF |
1271 | /* EDID bits */ |
1272 | uint8_t eld[MAX_ELD_BYTES]; | |
1273 | bool dvi_dual; | |
1274 | int max_tmds_clock; /* in MHz */ | |
1275 | bool latency_present[2]; | |
1276 | int video_latency[2]; /* [0]: progressive, [1]: interlaced */ | |
1277 | int audio_latency[2]; | |
4a9a8b71 | 1278 | int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ |
0b2443ed | 1279 | unsigned bad_edid_counter; |
30f65707 | 1280 | |
6ba2bd3d TP |
1281 | /* Flag for raw EDID header corruption - used in Displayport |
1282 | * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6 | |
1283 | */ | |
1284 | bool edid_corrupt; | |
1285 | ||
30f65707 | 1286 | struct dentry *debugfs_entry; |
144ecb97 DV |
1287 | |
1288 | struct drm_connector_state *state; | |
40d9b043 DA |
1289 | |
1290 | /* DisplayID bits */ | |
1291 | bool has_tile; | |
1292 | struct drm_tile_group *tile_group; | |
1293 | bool tile_is_single_monitor; | |
1294 | ||
1295 | uint8_t num_h_tile, num_v_tile; | |
1296 | uint8_t tile_h_loc, tile_v_loc; | |
1297 | uint16_t tile_h_size, tile_v_size; | |
144ecb97 DV |
1298 | }; |
1299 | ||
1300 | /** | |
1301 | * struct drm_plane_state - mutable plane state | |
07cc0ef6 | 1302 | * @plane: backpointer to the plane |
144ecb97 | 1303 | * @crtc: currently bound CRTC, NULL if disabled |
cc4ceb48 | 1304 | * @fb: currently bound framebuffer |
e2330f07 | 1305 | * @fence: optional fence to wait for before scanning out @fb |
144ecb97 DV |
1306 | * @crtc_x: left position of visible portion of plane on crtc |
1307 | * @crtc_y: upper position of visible portion of plane on crtc | |
1308 | * @crtc_w: width of visible portion of plane on crtc | |
1309 | * @crtc_h: height of visible portion of plane on crtc | |
1310 | * @src_x: left position of visible portion of plane within | |
1311 | * plane (in 16.16) | |
1312 | * @src_y: upper position of visible portion of plane within | |
1313 | * plane (in 16.16) | |
1314 | * @src_w: width of visible portion of plane (in 16.16) | |
1315 | * @src_h: height of visible portion of plane (in 16.16) | |
ac3ba4a5 | 1316 | * @rotation: rotation of the plane |
144ecb97 DV |
1317 | * @state: backpointer to global drm_atomic_state |
1318 | */ | |
1319 | struct drm_plane_state { | |
07cc0ef6 DV |
1320 | struct drm_plane *plane; |
1321 | ||
6ddd388a RC |
1322 | struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_plane() */ |
1323 | struct drm_framebuffer *fb; /* do not write directly, use drm_atomic_set_fb_for_plane() */ | |
e2330f07 | 1324 | struct fence *fence; |
144ecb97 DV |
1325 | |
1326 | /* Signed dest location allows it to be partially off screen */ | |
1327 | int32_t crtc_x, crtc_y; | |
1328 | uint32_t crtc_w, crtc_h; | |
1329 | ||
1330 | /* Source values are 16.16 fixed point */ | |
1331 | uint32_t src_x, src_y; | |
1332 | uint32_t src_h, src_w; | |
1333 | ||
1da30627 MR |
1334 | /* Plane rotation */ |
1335 | unsigned int rotation; | |
1336 | ||
144ecb97 | 1337 | struct drm_atomic_state *state; |
f453ba04 DA |
1338 | }; |
1339 | ||
144ecb97 | 1340 | |
8cf5c917 | 1341 | /** |
3bf0401c | 1342 | * struct drm_plane_funcs - driver plane control functions |
8cf5c917 JB |
1343 | */ |
1344 | struct drm_plane_funcs { | |
88548636 DV |
1345 | /** |
1346 | * @update_plane: | |
1347 | * | |
1348 | * This is the legacy entry point to enable and configure the plane for | |
1349 | * the given CRTC and framebuffer. It is never called to disable the | |
1350 | * plane, i.e. the passed-in crtc and fb paramters are never NULL. | |
1351 | * | |
1352 | * The source rectangle in frame buffer memory coordinates is given by | |
1353 | * the src_x, src_y, src_w and src_h parameters (as 16.16 fixed point | |
1354 | * values). Devices that don't support subpixel plane coordinates can | |
1355 | * ignore the fractional part. | |
1356 | * | |
1357 | * The destination rectangle in CRTC coordinates is given by the | |
1358 | * crtc_x, crtc_y, crtc_w and crtc_h parameters (as integer values). | |
1359 | * Devices scale the source rectangle to the destination rectangle. If | |
1360 | * scaling is not supported, and the source rectangle size doesn't match | |
1361 | * the destination rectangle size, the driver must return a | |
1362 | * -<errorname>EINVAL</errorname> error. | |
1363 | * | |
1364 | * Drivers implementing atomic modeset should use | |
1365 | * drm_atomic_helper_update_plane() to implement this hook. | |
1366 | * | |
1367 | * RETURNS: | |
1368 | * | |
1369 | * 0 on success or a negative error code on failure. | |
1370 | */ | |
8cf5c917 JB |
1371 | int (*update_plane)(struct drm_plane *plane, |
1372 | struct drm_crtc *crtc, struct drm_framebuffer *fb, | |
1373 | int crtc_x, int crtc_y, | |
1374 | unsigned int crtc_w, unsigned int crtc_h, | |
1375 | uint32_t src_x, uint32_t src_y, | |
1376 | uint32_t src_w, uint32_t src_h); | |
88548636 DV |
1377 | |
1378 | /** | |
1379 | * @disable_plane: | |
1380 | * | |
1381 | * This is the legacy entry point to disable the plane. The DRM core | |
c6b0ca3e | 1382 | * calls this method in response to a DRM_IOCTL_MODE_SETPLANE IOCTL call |
88548636 DV |
1383 | * with the frame buffer ID set to 0. Disabled planes must not be |
1384 | * processed by the CRTC. | |
1385 | * | |
1386 | * Drivers implementing atomic modeset should use | |
1387 | * drm_atomic_helper_disable_plane() to implement this hook. | |
1388 | * | |
1389 | * RETURNS: | |
1390 | * | |
1391 | * 0 on success or a negative error code on failure. | |
1392 | */ | |
8cf5c917 | 1393 | int (*disable_plane)(struct drm_plane *plane); |
88548636 DV |
1394 | |
1395 | /** | |
1396 | * @destroy: | |
1397 | * | |
1398 | * Clean up plane resources. This is only called at driver unload time | |
1399 | * through drm_mode_config_cleanup() since a plane cannot be hotplugged | |
1400 | * in DRM. | |
1401 | */ | |
8cf5c917 | 1402 | void (*destroy)(struct drm_plane *plane); |
88548636 DV |
1403 | |
1404 | /** | |
1405 | * @reset: | |
1406 | * | |
1407 | * Reset plane hardware and software state to off. This function isn't | |
1408 | * called by the core directly, only through drm_mode_config_reset(). | |
1409 | * It's not a helper hook only for historical reasons. | |
1410 | * | |
1411 | * Atomic drivers can use drm_atomic_helper_plane_reset() to reset | |
1412 | * atomic state using this hook. | |
1413 | */ | |
2a0d7cfd | 1414 | void (*reset)(struct drm_plane *plane); |
4d93914a | 1415 | |
88548636 DV |
1416 | /** |
1417 | * @set_property: | |
1418 | * | |
1419 | * This is the legacy entry point to update a property attached to the | |
1420 | * plane. | |
1421 | * | |
1422 | * Drivers implementing atomic modeset should use | |
1423 | * drm_atomic_helper_plane_set_property() to implement this hook. | |
1424 | * | |
1425 | * This callback is optional if the driver does not support any legacy | |
1426 | * driver-private properties. | |
1427 | * | |
1428 | * RETURNS: | |
1429 | * | |
1430 | * 0 on success or a negative error code on failure. | |
1431 | */ | |
4d93914a RC |
1432 | int (*set_property)(struct drm_plane *plane, |
1433 | struct drm_property *property, uint64_t val); | |
144ecb97 | 1434 | |
88548636 DV |
1435 | /** |
1436 | * @atomic_duplicate_state: | |
1437 | * | |
1438 | * Duplicate the current atomic state for this plane and return it. | |
1439 | * The core and helpers gurantee that any atomic state duplicated with | |
1440 | * this hook and still owned by the caller (i.e. not transferred to the | |
1441 | * driver by calling ->atomic_commit() from struct | |
1442 | * &drm_mode_config_funcs) will be cleaned up by calling the | |
1443 | * @atomic_destroy_state hook in this structure. | |
1444 | * | |
1445 | * Atomic drivers which don't subclass struct &drm_plane_state should use | |
1446 | * drm_atomic_helper_plane_duplicate_state(). Drivers that subclass the | |
1447 | * state structure to extend it with driver-private state should use | |
1448 | * __drm_atomic_helper_plane_duplicate_state() to make sure shared state is | |
1449 | * duplicated in a consistent fashion across drivers. | |
1450 | * | |
1451 | * It is an error to call this hook before plane->state has been | |
1452 | * initialized correctly. | |
1453 | * | |
1454 | * NOTE: | |
1455 | * | |
1456 | * If the duplicate state references refcounted resources this hook must | |
1457 | * acquire a reference for each of them. The driver must release these | |
1458 | * references again in @atomic_destroy_state. | |
1459 | * | |
1460 | * RETURNS: | |
1461 | * | |
1462 | * Duplicated atomic state or NULL when the allocation failed. | |
1463 | */ | |
144ecb97 | 1464 | struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane); |
88548636 DV |
1465 | |
1466 | /** | |
1467 | * @atomic_destroy_state: | |
1468 | * | |
1469 | * Destroy a state duplicated with @atomic_duplicate_state and release | |
1470 | * or unreference all resources it references | |
1471 | */ | |
144ecb97 | 1472 | void (*atomic_destroy_state)(struct drm_plane *plane, |
cc4ceb48 | 1473 | struct drm_plane_state *state); |
88548636 DV |
1474 | |
1475 | /** | |
1476 | * @atomic_set_property: | |
1477 | * | |
1478 | * Decode a driver-private property value and store the decoded value | |
1479 | * into the passed-in state structure. Since the atomic core decodes all | |
1480 | * standardized properties (even for extensions beyond the core set of | |
1481 | * properties which might not be implemented by all drivers) this | |
1482 | * requires drivers to subclass the state structure. | |
1483 | * | |
1484 | * Such driver-private properties should really only be implemented for | |
1485 | * truly hardware/vendor specific state. Instead it is preferred to | |
1486 | * standardize atomic extension and decode the properties used to expose | |
1487 | * such an extension in the core. | |
1488 | * | |
1489 | * Do not call this function directly, use | |
1490 | * drm_atomic_plane_set_property() instead. | |
1491 | * | |
1492 | * This callback is optional if the driver does not support any | |
1493 | * driver-private atomic properties. | |
1494 | * | |
1495 | * NOTE: | |
1496 | * | |
1497 | * This function is called in the state assembly phase of atomic | |
1498 | * modesets, which can be aborted for any reason (including on | |
1499 | * userspace's request to just check whether a configuration would be | |
1500 | * possible). Drivers MUST NOT touch any persistent state (hardware or | |
1501 | * software) or data structures except the passed in @state parameter. | |
1502 | * | |
1503 | * Also since userspace controls in which order properties are set this | |
1504 | * function must not do any input validation (since the state update is | |
1505 | * incomplete and hence likely inconsistent). Instead any such input | |
1506 | * validation must be done in the various atomic_check callbacks. | |
1507 | * | |
1508 | * RETURNS: | |
1509 | * | |
1510 | * 0 if the property has been found, -EINVAL if the property isn't | |
1511 | * implemented by the driver (which shouldn't ever happen, the core only | |
1512 | * asks for properties attached to this plane). No other validation is | |
1513 | * allowed by the driver. The core already checks that the property | |
1514 | * value is within the range (integer, valid enum value, ...) the driver | |
1515 | * set when registering the property. | |
1516 | */ | |
144ecb97 DV |
1517 | int (*atomic_set_property)(struct drm_plane *plane, |
1518 | struct drm_plane_state *state, | |
1519 | struct drm_property *property, | |
1520 | uint64_t val); | |
88548636 DV |
1521 | |
1522 | /** | |
1523 | * @atomic_get_property: | |
1524 | * | |
1525 | * Reads out the decoded driver-private property. This is used to | |
c6b0ca3e | 1526 | * implement the GETPLANE IOCTL. |
88548636 DV |
1527 | * |
1528 | * Do not call this function directly, use | |
1529 | * drm_atomic_plane_get_property() instead. | |
1530 | * | |
1531 | * This callback is optional if the driver does not support any | |
1532 | * driver-private atomic properties. | |
1533 | * | |
1534 | * RETURNS: | |
1535 | * | |
1536 | * 0 on success, -EINVAL if the property isn't implemented by the | |
1537 | * driver (which should never happen, the core only asks for | |
1538 | * properties attached to this plane). | |
1539 | */ | |
ac9c9256 RC |
1540 | int (*atomic_get_property)(struct drm_plane *plane, |
1541 | const struct drm_plane_state *state, | |
1542 | struct drm_property *property, | |
1543 | uint64_t *val); | |
8cf5c917 JB |
1544 | }; |
1545 | ||
e27dde3e MR |
1546 | enum drm_plane_type { |
1547 | DRM_PLANE_TYPE_OVERLAY, | |
1548 | DRM_PLANE_TYPE_PRIMARY, | |
1549 | DRM_PLANE_TYPE_CURSOR, | |
1550 | }; | |
1551 | ||
88548636 | 1552 | |
8cf5c917 | 1553 | /** |
3bf0401c | 1554 | * struct drm_plane - central DRM plane control structure |
8cf5c917 JB |
1555 | * @dev: DRM device this plane belongs to |
1556 | * @head: for list management | |
ac3ba4a5 | 1557 | * @name: human readable name, can be overwritten by the driver |
8cf5c917 JB |
1558 | * @base: base mode object |
1559 | * @possible_crtcs: pipes this plane can be bound to | |
1560 | * @format_types: array of formats supported by this plane | |
1561 | * @format_count: number of formats supported | |
7eb5f302 | 1562 | * @format_default: driver hasn't supplied supported formats for the plane |
8cf5c917 JB |
1563 | * @crtc: currently bound CRTC |
1564 | * @fb: currently bound fb | |
2c0c33d4 DV |
1565 | * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by |
1566 | * drm_mode_set_config_internal() to implement correct refcounting. | |
8cf5c917 | 1567 | * @funcs: helper functions |
4d93914a | 1568 | * @properties: property tracking for this plane |
e27dde3e | 1569 | * @type: type of plane (overlay, primary, cursor) |
144ecb97 | 1570 | * @state: current atomic state for this plane |
ac3ba4a5 | 1571 | * @helper_private: mid-layer private data |
8cf5c917 JB |
1572 | */ |
1573 | struct drm_plane { | |
1574 | struct drm_device *dev; | |
1575 | struct list_head head; | |
1576 | ||
9f4c97a2 VS |
1577 | char *name; |
1578 | ||
ac3ba4a5 DV |
1579 | /** |
1580 | * @mutex: | |
1581 | * | |
1582 | * Protects modeset plane state, together with the mutex of &drm_crtc | |
1583 | * this plane is linked to (when active, getting actived or getting | |
1584 | * disabled). | |
1585 | */ | |
4d02e2de DV |
1586 | struct drm_modeset_lock mutex; |
1587 | ||
8cf5c917 JB |
1588 | struct drm_mode_object base; |
1589 | ||
1590 | uint32_t possible_crtcs; | |
1591 | uint32_t *format_types; | |
45e3743a | 1592 | unsigned int format_count; |
7eb5f302 | 1593 | bool format_default; |
8cf5c917 JB |
1594 | |
1595 | struct drm_crtc *crtc; | |
1596 | struct drm_framebuffer *fb; | |
1597 | ||
3d30a59b DV |
1598 | struct drm_framebuffer *old_fb; |
1599 | ||
8cf5c917 | 1600 | const struct drm_plane_funcs *funcs; |
4d93914a RC |
1601 | |
1602 | struct drm_object_properties properties; | |
e27dde3e MR |
1603 | |
1604 | enum drm_plane_type type; | |
144ecb97 | 1605 | |
490d3d1b CW |
1606 | /* position inside the mode_config.list, can be used as a [] idx */ |
1607 | unsigned index; | |
1608 | ||
4490d4c7 | 1609 | const struct drm_plane_helper_funcs *helper_private; |
c2fcd274 | 1610 | |
144ecb97 | 1611 | struct drm_plane_state *state; |
8cf5c917 JB |
1612 | }; |
1613 | ||
3b336ec4 | 1614 | /** |
3bf0401c | 1615 | * struct drm_bridge_funcs - drm_bridge control functions |
3d3f8b1f | 1616 | * @attach: Called during drm_bridge_attach |
3b336ec4 SP |
1617 | */ |
1618 | struct drm_bridge_funcs { | |
3d3f8b1f | 1619 | int (*attach)(struct drm_bridge *bridge); |
da024fe5 DV |
1620 | |
1621 | /** | |
1622 | * @mode_fixup: | |
1623 | * | |
1624 | * This callback is used to validate and adjust a mode. The paramater | |
1625 | * mode is the display mode that should be fed to the next element in | |
1626 | * the display chain, either the final &drm_connector or the next | |
1627 | * &drm_bridge. The parameter adjusted_mode is the input mode the bridge | |
1628 | * requires. It can be modified by this callback and does not need to | |
1629 | * match mode. | |
1630 | * | |
1631 | * This is the only hook that allows a bridge to reject a modeset. If | |
1632 | * this function passes all other callbacks must succeed for this | |
1633 | * configuration. | |
1634 | * | |
1635 | * NOTE: | |
1636 | * | |
1637 | * This function is called in the check phase of atomic modesets, which | |
1638 | * can be aborted for any reason (including on userspace's request to | |
1639 | * just check whether a configuration would be possible). Drivers MUST | |
1640 | * NOT touch any persistent state (hardware or software) or data | |
88548636 | 1641 | * structures except the passed in @state parameter. |
da024fe5 DV |
1642 | * |
1643 | * RETURNS: | |
1644 | * | |
1645 | * True if an acceptable configuration is possible, false if the modeset | |
1646 | * operation should be rejected. | |
1647 | */ | |
3b336ec4 SP |
1648 | bool (*mode_fixup)(struct drm_bridge *bridge, |
1649 | const struct drm_display_mode *mode, | |
1650 | struct drm_display_mode *adjusted_mode); | |
da024fe5 DV |
1651 | /** |
1652 | * @disable: | |
1653 | * | |
1654 | * This callback should disable the bridge. It is called right before | |
1655 | * the preceding element in the display pipe is disabled. If the | |
1656 | * preceding element is a bridge this means it's called before that | |
1657 | * bridge's ->disable() function. If the preceding element is a | |
1658 | * &drm_encoder it's called right before the encoder's ->disable(), | |
1659 | * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs. | |
1660 | * | |
1661 | * The bridge can assume that the display pipe (i.e. clocks and timing | |
1662 | * signals) feeding it is still running when this callback is called. | |
c8a3b2ae LP |
1663 | * |
1664 | * The disable callback is optional. | |
da024fe5 | 1665 | */ |
3b336ec4 | 1666 | void (*disable)(struct drm_bridge *bridge); |
da024fe5 DV |
1667 | |
1668 | /** | |
1669 | * @post_disable: | |
1670 | * | |
1671 | * This callback should disable the bridge. It is called right after | |
1672 | * the preceding element in the display pipe is disabled. If the | |
1673 | * preceding element is a bridge this means it's called after that | |
1674 | * bridge's ->post_disable() function. If the preceding element is a | |
1675 | * &drm_encoder it's called right after the encoder's ->disable(), | |
1676 | * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs. | |
1677 | * | |
1678 | * The bridge must assume that the display pipe (i.e. clocks and timing | |
1679 | * singals) feeding it is no longer running when this callback is | |
1680 | * called. | |
c8a3b2ae LP |
1681 | * |
1682 | * The post_disable callback is optional. | |
da024fe5 | 1683 | */ |
3b336ec4 | 1684 | void (*post_disable)(struct drm_bridge *bridge); |
da024fe5 DV |
1685 | |
1686 | /** | |
1687 | * @mode_set: | |
1688 | * | |
1689 | * This callback should set the given mode on the bridge. It is called | |
1690 | * after the ->mode_set() callback for the preceding element in the | |
1691 | * display pipeline has been called already. The display pipe (i.e. | |
1692 | * clocks and timing signals) is off when this function is called. | |
1693 | */ | |
3b336ec4 SP |
1694 | void (*mode_set)(struct drm_bridge *bridge, |
1695 | struct drm_display_mode *mode, | |
1696 | struct drm_display_mode *adjusted_mode); | |
da024fe5 DV |
1697 | /** |
1698 | * @pre_enable: | |
1699 | * | |
1700 | * This callback should enable the bridge. It is called right before | |
1701 | * the preceding element in the display pipe is enabled. If the | |
1702 | * preceding element is a bridge this means it's called before that | |
1703 | * bridge's ->pre_enable() function. If the preceding element is a | |
1704 | * &drm_encoder it's called right before the encoder's ->enable(), | |
1705 | * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs. | |
1706 | * | |
1707 | * The display pipe (i.e. clocks and timing signals) feeding this bridge | |
1708 | * will not yet be running when this callback is called. The bridge must | |
1709 | * not enable the display link feeding the next bridge in the chain (if | |
1710 | * there is one) when this callback is called. | |
c8a3b2ae LP |
1711 | * |
1712 | * The pre_enable callback is optional. | |
da024fe5 | 1713 | */ |
3b336ec4 | 1714 | void (*pre_enable)(struct drm_bridge *bridge); |
da024fe5 DV |
1715 | |
1716 | /** | |
1717 | * @enable: | |
1718 | * | |
1719 | * This callback should enable the bridge. It is called right after | |
1720 | * the preceding element in the display pipe is enabled. If the | |
1721 | * preceding element is a bridge this means it's called after that | |
1722 | * bridge's ->enable() function. If the preceding element is a | |
1723 | * &drm_encoder it's called right after the encoder's ->enable(), | |
1724 | * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs. | |
1725 | * | |
1726 | * The bridge can assume that the display pipe (i.e. clocks and timing | |
1727 | * signals) feeding it is running when this callback is called. This | |
1728 | * callback must enable the display link feeding the next bridge in the | |
1729 | * chain if there is one. | |
c8a3b2ae LP |
1730 | * |
1731 | * The enable callback is optional. | |
da024fe5 | 1732 | */ |
3b336ec4 | 1733 | void (*enable)(struct drm_bridge *bridge); |
3b336ec4 SP |
1734 | }; |
1735 | ||
1736 | /** | |
3bf0401c | 1737 | * struct drm_bridge - central DRM bridge control structure |
3b336ec4 | 1738 | * @dev: DRM device this bridge belongs to |
862e686c AT |
1739 | * @encoder: encoder to which this bridge is connected |
1740 | * @next: the next bridge in the encoder chain | |
3d3f8b1f AK |
1741 | * @of_node: device node pointer to the bridge |
1742 | * @list: to keep track of all added bridges | |
3b336ec4 SP |
1743 | * @funcs: control functions |
1744 | * @driver_private: pointer to the bridge driver's internal context | |
1745 | */ | |
1746 | struct drm_bridge { | |
1747 | struct drm_device *dev; | |
3d3f8b1f | 1748 | struct drm_encoder *encoder; |
862e686c | 1749 | struct drm_bridge *next; |
3d3f8b1f AK |
1750 | #ifdef CONFIG_OF |
1751 | struct device_node *of_node; | |
1752 | #endif | |
1753 | struct list_head list; | |
3b336ec4 SP |
1754 | |
1755 | const struct drm_bridge_funcs *funcs; | |
1756 | void *driver_private; | |
1757 | }; | |
1758 | ||
3b24f7d6 DV |
1759 | /** |
1760 | * struct drm_crtc_commit - track modeset commits on a CRTC | |
1761 | * | |
1762 | * This structure is used to track pending modeset changes and atomic commit on | |
1763 | * a per-CRTC basis. Since updating the list should never block this structure | |
1764 | * is reference counted to allow waiters to safely wait on an event to complete, | |
1765 | * without holding any locks. | |
1766 | * | |
1767 | * It has 3 different events in total to allow a fine-grained synchronization | |
1768 | * between outstanding updates:: | |
1769 | * | |
1770 | * atomic commit thread hardware | |
1771 | * | |
1772 | * write new state into hardware ----> ... | |
1773 | * signal hw_done | |
1774 | * switch to new state on next | |
1775 | * ... v/hblank | |
1776 | * | |
1777 | * wait for buffers to show up ... | |
1778 | * | |
1779 | * ... send completion irq | |
1780 | * irq handler signals flip_done | |
1781 | * cleanup old buffers | |
1782 | * | |
1783 | * signal cleanup_done | |
1784 | * | |
1785 | * wait for flip_done <---- | |
1786 | * clean up atomic state | |
1787 | * | |
1788 | * The important bit to know is that cleanup_done is the terminal event, but the | |
1789 | * ordering between flip_done and hw_done is entirely up to the specific driver | |
1790 | * and modeset state change. | |
1791 | * | |
1792 | * For an implementation of how to use this look at | |
1793 | * drm_atomic_helper_setup_commit() from the atomic helper library. | |
1794 | */ | |
1795 | struct drm_crtc_commit { | |
1796 | /** | |
1797 | * @crtc: | |
1798 | * | |
1799 | * DRM CRTC for this commit. | |
1800 | */ | |
1801 | struct drm_crtc *crtc; | |
1802 | ||
1803 | /** | |
1804 | * @ref: | |
1805 | * | |
1806 | * Reference count for this structure. Needed to allow blocking on | |
1807 | * completions without the risk of the completion disappearing | |
1808 | * meanwhile. | |
1809 | */ | |
1810 | struct kref ref; | |
1811 | ||
1812 | /** | |
1813 | * @flip_done: | |
1814 | * | |
1815 | * Will be signaled when the hardware has flipped to the new set of | |
1816 | * buffers. Signals at the same time as when the drm event for this | |
1817 | * commit is sent to userspace, or when an out-fence is singalled. Note | |
1818 | * that for most hardware, in most cases this happens after @hw_done is | |
1819 | * signalled. | |
1820 | */ | |
1821 | struct completion flip_done; | |
1822 | ||
1823 | /** | |
1824 | * @hw_done: | |
1825 | * | |
1826 | * Will be signalled when all hw register changes for this commit have | |
1827 | * been written out. Especially when disabling a pipe this can be much | |
1828 | * later than than @flip_done, since that can signal already when the | |
1829 | * screen goes black, whereas to fully shut down a pipe more register | |
1830 | * I/O is required. | |
1831 | * | |
1832 | * Note that this does not need to include separately reference-counted | |
1833 | * resources like backing storage buffer pinning, or runtime pm | |
1834 | * management. | |
1835 | */ | |
1836 | struct completion hw_done; | |
1837 | ||
1838 | /** | |
1839 | * @cleanup_done: | |
1840 | * | |
1841 | * Will be signalled after old buffers have been cleaned up by calling | |
1842 | * drm_atomic_helper_cleanup_planes(). Since this can only happen after | |
1843 | * a vblank wait completed it might be a bit later. This completion is | |
1844 | * useful to throttle updates and avoid hardware updates getting ahead | |
1845 | * of the buffer cleanup too much. | |
1846 | */ | |
1847 | struct completion cleanup_done; | |
1848 | ||
1849 | /** | |
1850 | * @commit_entry: | |
1851 | * | |
1852 | * Entry on the per-CRTC commit_list. Protected by crtc->commit_lock. | |
1853 | */ | |
1854 | struct list_head commit_entry; | |
1855 | ||
1856 | /** | |
1857 | * @event: | |
1858 | * | |
1859 | * &drm_pending_vblank_event pointer to clean up private events. | |
1860 | */ | |
1861 | struct drm_pending_vblank_event *event; | |
1862 | }; | |
1863 | ||
b8b5342b DV |
1864 | struct __drm_planes_state { |
1865 | struct drm_plane *ptr; | |
1866 | struct drm_plane_state *state; | |
1867 | }; | |
1868 | ||
5d943aa6 DV |
1869 | struct __drm_crtcs_state { |
1870 | struct drm_crtc *ptr; | |
1871 | struct drm_crtc_state *state; | |
3b24f7d6 | 1872 | struct drm_crtc_commit *commit; |
5d943aa6 DV |
1873 | }; |
1874 | ||
63e83c1d DV |
1875 | struct __drm_connnectors_state { |
1876 | struct drm_connector *ptr; | |
1877 | struct drm_connector_state *state; | |
1878 | }; | |
1879 | ||
cc4ceb48 | 1880 | /** |
08855fae | 1881 | * struct drm_atomic_state - the global state object for atomic updates |
cc4ceb48 | 1882 | * @dev: parent DRM device |
d34f20d6 | 1883 | * @allow_modeset: allow full modeset |
c6b0ca3e | 1884 | * @legacy_cursor_update: hint to enforce legacy cursor IOCTL semantics |
40616a26 | 1885 | * @legacy_set_config: Disable conflicting encoders instead of failing with -EINVAL. |
b8b5342b | 1886 | * @planes: pointer to array of structures with per-plane data |
cc4ceb48 | 1887 | * @crtcs: pointer to array of CRTC pointers |
f52b69f1 | 1888 | * @num_connector: size of the @connectors and @connector_states arrays |
63e83c1d | 1889 | * @connectors: pointer to array of structures with per-connector data |
cc4ceb48 DV |
1890 | * @acquire_ctx: acquire context for this atomic modeset state update |
1891 | */ | |
1892 | struct drm_atomic_state { | |
1893 | struct drm_device *dev; | |
d34f20d6 | 1894 | bool allow_modeset : 1; |
f02ad907 | 1895 | bool legacy_cursor_update : 1; |
40616a26 | 1896 | bool legacy_set_config : 1; |
b8b5342b | 1897 | struct __drm_planes_state *planes; |
5d943aa6 | 1898 | struct __drm_crtcs_state *crtcs; |
f52b69f1 | 1899 | int num_connector; |
63e83c1d | 1900 | struct __drm_connnectors_state *connectors; |
cc4ceb48 DV |
1901 | |
1902 | struct drm_modeset_acquire_ctx *acquire_ctx; | |
3b24f7d6 DV |
1903 | |
1904 | /** | |
1905 | * @commit_work: | |
1906 | * | |
1907 | * Work item which can be used by the driver or helpers to execute the | |
1908 | * commit without blocking. | |
1909 | */ | |
1910 | struct work_struct commit_work; | |
cc4ceb48 DV |
1911 | }; |
1912 | ||
1913 | ||
f453ba04 | 1914 | /** |
3bf0401c | 1915 | * struct drm_mode_set - new values for a CRTC config change |
ef27351a JB |
1916 | * @fb: framebuffer to use for new config |
1917 | * @crtc: CRTC whose configuration we're about to change | |
1918 | * @mode: mode timings to use | |
1919 | * @x: position of this CRTC relative to @fb | |
1920 | * @y: position of this CRTC relative to @fb | |
1921 | * @connectors: array of connectors to drive with this CRTC if possible | |
1922 | * @num_connectors: size of @connectors array | |
f453ba04 DA |
1923 | * |
1924 | * Represents a single crtc the connectors that it drives with what mode | |
1925 | * and from which framebuffer it scans out from. | |
1926 | * | |
1927 | * This is used to set modes. | |
1928 | */ | |
1929 | struct drm_mode_set { | |
f453ba04 DA |
1930 | struct drm_framebuffer *fb; |
1931 | struct drm_crtc *crtc; | |
1932 | struct drm_display_mode *mode; | |
1933 | ||
1934 | uint32_t x; | |
1935 | uint32_t y; | |
1936 | ||
1937 | struct drm_connector **connectors; | |
1938 | size_t num_connectors; | |
1939 | }; | |
1940 | ||
1941 | /** | |
550cebcd | 1942 | * struct drm_mode_config_funcs - basic driver provided mode setting functions |
550cebcd JB |
1943 | * |
1944 | * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that | |
1945 | * involve drivers. | |
f453ba04 DA |
1946 | */ |
1947 | struct drm_mode_config_funcs { | |
9953f417 DV |
1948 | /** |
1949 | * @fb_create: | |
1950 | * | |
1951 | * Create a new framebuffer object. The core does basic checks on the | |
1952 | * requested metadata, but most of that is left to the driver. See | |
1953 | * struct &drm_mode_fb_cmd2 for details. | |
1954 | * | |
d55f5320 DV |
1955 | * If the parameters are deemed valid and the backing storage objects in |
1956 | * the underlying memory manager all exist, then the driver allocates | |
1957 | * a new &drm_framebuffer structure, subclassed to contain | |
1958 | * driver-specific information (like the internal native buffer object | |
1959 | * references). It also needs to fill out all relevant metadata, which | |
1960 | * should be done by calling drm_helper_mode_fill_fb_struct(). | |
1961 | * | |
1962 | * The initialization is finalized by calling drm_framebuffer_init(), | |
1963 | * which registers the framebuffer and makes it accessible to other | |
1964 | * threads. | |
1965 | * | |
9953f417 DV |
1966 | * RETURNS: |
1967 | * | |
1968 | * A new framebuffer with an initial reference count of 1 or a negative | |
1969 | * error code encoded with ERR_PTR(). | |
1970 | */ | |
550cebcd JB |
1971 | struct drm_framebuffer *(*fb_create)(struct drm_device *dev, |
1972 | struct drm_file *file_priv, | |
1eb83451 | 1973 | const struct drm_mode_fb_cmd2 *mode_cmd); |
9953f417 DV |
1974 | |
1975 | /** | |
1976 | * @output_poll_changed: | |
1977 | * | |
1978 | * Callback used by helpers to inform the driver of output configuration | |
1979 | * changes. | |
1980 | * | |
1981 | * Drivers implementing fbdev emulation with the helpers can call | |
1982 | * drm_fb_helper_hotplug_changed from this hook to inform the fbdev | |
1983 | * helper of output changes. | |
1984 | * | |
1985 | * FIXME: | |
1986 | * | |
1987 | * Except that there's no vtable for device-level helper callbacks | |
1988 | * there's no reason this is a core function. | |
1989 | */ | |
eb1f8e4f | 1990 | void (*output_poll_changed)(struct drm_device *dev); |
cc4ceb48 | 1991 | |
9953f417 DV |
1992 | /** |
1993 | * @atomic_check: | |
1994 | * | |
1995 | * This is the only hook to validate an atomic modeset update. This | |
1996 | * function must reject any modeset and state changes which the hardware | |
1997 | * or driver doesn't support. This includes but is of course not limited | |
1998 | * to: | |
1999 | * | |
2000 | * - Checking that the modes, framebuffers, scaling and placement | |
2001 | * requirements and so on are within the limits of the hardware. | |
2002 | * | |
2003 | * - Checking that any hidden shared resources are not oversubscribed. | |
2004 | * This can be shared PLLs, shared lanes, overall memory bandwidth, | |
2005 | * display fifo space (where shared between planes or maybe even | |
2006 | * CRTCs). | |
2007 | * | |
2008 | * - Checking that virtualized resources exported to userspace are not | |
2009 | * oversubscribed. For various reasons it can make sense to expose | |
2010 | * more planes, crtcs or encoders than which are physically there. One | |
2011 | * example is dual-pipe operations (which generally should be hidden | |
2012 | * from userspace if when lockstepped in hardware, exposed otherwise), | |
2013 | * where a plane might need 1 hardware plane (if it's just on one | |
2014 | * pipe), 2 hardware planes (when it spans both pipes) or maybe even | |
2015 | * shared a hardware plane with a 2nd plane (if there's a compatible | |
2016 | * plane requested on the area handled by the other pipe). | |
2017 | * | |
2018 | * - Check that any transitional state is possible and that if | |
2019 | * requested, the update can indeed be done in the vblank period | |
2020 | * without temporarily disabling some functions. | |
2021 | * | |
2022 | * - Check any other constraints the driver or hardware might have. | |
2023 | * | |
2024 | * - This callback also needs to correctly fill out the &drm_crtc_state | |
2025 | * in this update to make sure that drm_atomic_crtc_needs_modeset() | |
2026 | * reflects the nature of the possible update and returns true if and | |
2027 | * only if the update cannot be applied without tearing within one | |
2028 | * vblank on that CRTC. The core uses that information to reject | |
2029 | * updates which require a full modeset (i.e. blanking the screen, or | |
2030 | * at least pausing updates for a substantial amount of time) if | |
2031 | * userspace has disallowed that in its request. | |
2032 | * | |
2033 | * - The driver also does not need to repeat basic input validation | |
2034 | * like done for the corresponding legacy entry points. The core does | |
2035 | * that before calling this hook. | |
2036 | * | |
2037 | * See the documentation of @atomic_commit for an exhaustive list of | |
2038 | * error conditions which don't have to be checked at the | |
2039 | * ->atomic_check() stage? | |
2040 | * | |
2041 | * See the documentation for struct &drm_atomic_state for how exactly | |
2042 | * an atomic modeset update is described. | |
2043 | * | |
2044 | * Drivers using the atomic helpers can implement this hook using | |
2045 | * drm_atomic_helper_check(), or one of the exported sub-functions of | |
2046 | * it. | |
2047 | * | |
2048 | * RETURNS: | |
2049 | * | |
2050 | * 0 on success or one of the below negative error codes: | |
2051 | * | |
2052 | * - -EINVAL, if any of the above constraints are violated. | |
2053 | * | |
2054 | * - -EDEADLK, when returned from an attempt to acquire an additional | |
2055 | * &drm_modeset_lock through drm_modeset_lock(). | |
2056 | * | |
2057 | * - -ENOMEM, if allocating additional state sub-structures failed due | |
2058 | * to lack of memory. | |
2059 | * | |
2060 | * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. | |
2061 | * This can either be due to a pending signal, or because the driver | |
2062 | * needs to completely bail out to recover from an exceptional | |
2063 | * situation like a GPU hang. From a userspace point all errors are | |
2064 | * treated equally. | |
2065 | */ | |
cc4ceb48 | 2066 | int (*atomic_check)(struct drm_device *dev, |
9953f417 DV |
2067 | struct drm_atomic_state *state); |
2068 | ||
2069 | /** | |
2070 | * @atomic_commit: | |
2071 | * | |
2072 | * This is the only hook to commit an atomic modeset update. The core | |
2073 | * guarantees that @atomic_check has been called successfully before | |
2074 | * calling this function, and that nothing has been changed in the | |
2075 | * interim. | |
2076 | * | |
2077 | * See the documentation for struct &drm_atomic_state for how exactly | |
2078 | * an atomic modeset update is described. | |
2079 | * | |
2080 | * Drivers using the atomic helpers can implement this hook using | |
2081 | * drm_atomic_helper_commit(), or one of the exported sub-functions of | |
2082 | * it. | |
2083 | * | |
286dbb8d | 2084 | * Nonblocking commits (as indicated with the nonblock parameter) must |
9953f417 DV |
2085 | * do any preparatory work which might result in an unsuccessful commit |
2086 | * in the context of this callback. The only exceptions are hardware | |
2087 | * errors resulting in -EIO. But even in that case the driver must | |
2088 | * ensure that the display pipe is at least running, to avoid | |
2089 | * compositors crashing when pageflips don't work. Anything else, | |
2090 | * specifically committing the update to the hardware, should be done | |
2091 | * without blocking the caller. For updates which do not require a | |
2092 | * modeset this must be guaranteed. | |
2093 | * | |
2094 | * The driver must wait for any pending rendering to the new | |
2095 | * framebuffers to complete before executing the flip. It should also | |
2096 | * wait for any pending rendering from other drivers if the underlying | |
286dbb8d | 2097 | * buffer is a shared dma-buf. Nonblocking commits must not wait for |
9953f417 DV |
2098 | * rendering in the context of this callback. |
2099 | * | |
2100 | * An application can request to be notified when the atomic commit has | |
2101 | * completed. These events are per-CRTC and can be distinguished by the | |
2102 | * CRTC index supplied in &drm_event to userspace. | |
2103 | * | |
2104 | * The drm core will supply a struct &drm_event in the event | |
2105 | * member of each CRTC's &drm_crtc_state structure. This can be handled by the | |
2106 | * drm_crtc_send_vblank_event() function, which the driver should call on | |
2107 | * the provided event upon completion of the atomic commit. Note that if | |
2108 | * the driver supports vblank signalling and timestamping the vblank | |
2109 | * counters and timestamps must agree with the ones returned from page | |
2110 | * flip events. With the current vblank helper infrastructure this can | |
2111 | * be achieved by holding a vblank reference while the page flip is | |
2112 | * pending, acquired through drm_crtc_vblank_get() and released with | |
2113 | * drm_crtc_vblank_put(). Drivers are free to implement their own vblank | |
2114 | * counter and timestamp tracking though, e.g. if they have accurate | |
2115 | * timestamp registers in hardware. | |
2116 | * | |
2117 | * NOTE: | |
2118 | * | |
2119 | * Drivers are not allowed to shut down any display pipe successfully | |
2120 | * enabled through an atomic commit on their own. Doing so can result in | |
2121 | * compositors crashing if a page flip is suddenly rejected because the | |
2122 | * pipe is off. | |
2123 | * | |
2124 | * RETURNS: | |
2125 | * | |
2126 | * 0 on success or one of the below negative error codes: | |
2127 | * | |
286dbb8d | 2128 | * - -EBUSY, if a nonblocking updated is requested and there is |
9953f417 DV |
2129 | * an earlier updated pending. Drivers are allowed to support a queue |
2130 | * of outstanding updates, but currently no driver supports that. | |
2131 | * Note that drivers must wait for preceding updates to complete if a | |
2132 | * synchronous update is requested, they are not allowed to fail the | |
2133 | * commit in that case. | |
2134 | * | |
2135 | * - -ENOMEM, if the driver failed to allocate memory. Specifically | |
2136 | * this can happen when trying to pin framebuffers, which must only | |
2137 | * be done when committing the state. | |
2138 | * | |
2139 | * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate | |
2140 | * that the driver has run out of vram, iommu space or similar GPU | |
2141 | * address space needed for framebuffer. | |
2142 | * | |
2143 | * - -EIO, if the hardware completely died. | |
2144 | * | |
2145 | * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. | |
2146 | * This can either be due to a pending signal, or because the driver | |
2147 | * needs to completely bail out to recover from an exceptional | |
2148 | * situation like a GPU hang. From a userspace point of view all errors are | |
2149 | * treated equally. | |
2150 | * | |
2151 | * This list is exhaustive. Specifically this hook is not allowed to | |
2152 | * return -EINVAL (any invalid requests should be caught in | |
2153 | * @atomic_check) or -EDEADLK (this function must not acquire | |
2154 | * additional modeset locks). | |
2155 | */ | |
cc4ceb48 | 2156 | int (*atomic_commit)(struct drm_device *dev, |
9953f417 | 2157 | struct drm_atomic_state *state, |
286dbb8d | 2158 | bool nonblock); |
9953f417 DV |
2159 | |
2160 | /** | |
2161 | * @atomic_state_alloc: | |
2162 | * | |
2163 | * This optional hook can be used by drivers that want to subclass struct | |
2164 | * &drm_atomic_state to be able to track their own driver-private global | |
2165 | * state easily. If this hook is implemented, drivers must also | |
2166 | * implement @atomic_state_clear and @atomic_state_free. | |
2167 | * | |
2168 | * RETURNS: | |
2169 | * | |
2170 | * A new &drm_atomic_state on success or NULL on failure. | |
2171 | */ | |
036ef573 | 2172 | struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev); |
9953f417 DV |
2173 | |
2174 | /** | |
2175 | * @atomic_state_clear: | |
2176 | * | |
2177 | * This hook must clear any driver private state duplicated into the | |
2178 | * passed-in &drm_atomic_state. This hook is called when the caller | |
2179 | * encountered a &drm_modeset_lock deadlock and needs to drop all | |
2180 | * already acquired locks as part of the deadlock avoidance dance | |
2181 | * implemented in drm_modeset_lock_backoff(). | |
2182 | * | |
2183 | * Any duplicated state must be invalidated since a concurrent atomic | |
2184 | * update might change it, and the drm atomic interfaces always apply | |
2185 | * updates as relative changes to the current state. | |
2186 | * | |
2187 | * Drivers that implement this must call drm_atomic_state_default_clear() | |
2188 | * to clear common state. | |
2189 | */ | |
036ef573 | 2190 | void (*atomic_state_clear)(struct drm_atomic_state *state); |
9953f417 DV |
2191 | |
2192 | /** | |
2193 | * @atomic_state_free: | |
2194 | * | |
2195 | * This hook needs driver private resources and the &drm_atomic_state | |
2196 | * itself. Note that the core first calls drm_atomic_state_clear() to | |
2197 | * avoid code duplicate between the clear and free hooks. | |
2198 | * | |
2199 | * Drivers that implement this must call drm_atomic_state_default_free() | |
2200 | * to release common resources. | |
2201 | */ | |
036ef573 | 2202 | void (*atomic_state_free)(struct drm_atomic_state *state); |
f453ba04 DA |
2203 | }; |
2204 | ||
f453ba04 | 2205 | /** |
2c0c33d4 | 2206 | * struct drm_mode_config - Mode configuration control structure |
a62c93d5 | 2207 | * @mutex: mutex protecting KMS related lists and structures |
2c0c33d4 DV |
2208 | * @connection_mutex: ww mutex protecting connector state and routing |
2209 | * @acquire_ctx: global implicit acquire context used by atomic drivers for | |
c6b0ca3e | 2210 | * legacy IOCTLs |
2c0c33d4 | 2211 | * @fb_lock: mutex to protect fb state and lists |
a62c93d5 JB |
2212 | * @num_fb: number of fbs available |
2213 | * @fb_list: list of framebuffers available | |
2214 | * @num_connector: number of connectors on this device | |
2215 | * @connector_list: list of connector objects | |
2216 | * @num_encoder: number of encoders on this device | |
2217 | * @encoder_list: list of encoder objects | |
2c0c33d4 DV |
2218 | * @num_overlay_plane: number of overlay planes on this device |
2219 | * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device | |
2220 | * @plane_list: list of plane objects | |
a62c93d5 JB |
2221 | * @num_crtc: number of CRTCs on this device |
2222 | * @crtc_list: list of CRTC objects | |
2c0c33d4 | 2223 | * @property_list: list of property objects |
a62c93d5 JB |
2224 | * @min_width: minimum pixel width on this device |
2225 | * @min_height: minimum pixel height on this device | |
2226 | * @max_width: maximum pixel width on this device | |
2227 | * @max_height: maximum pixel height on this device | |
2228 | * @funcs: core driver provided mode setting functions | |
2229 | * @fb_base: base address of the framebuffer | |
2c0c33d4 DV |
2230 | * @poll_enabled: track polling support for this device |
2231 | * @poll_running: track polling status for this device | |
ac3ba4a5 | 2232 | * @delayed_event: track delayed poll uevent deliver for this device |
a62c93d5 | 2233 | * @output_poll_work: delayed work for polling in process context |
2c0c33d4 | 2234 | * @property_blob_list: list of all the blob property objects |
8fb6e7a5 | 2235 | * @blob_lock: mutex for blob property allocation and management |
a62c93d5 | 2236 | * @*_property: core property tracking |
5488dc16 LL |
2237 | * @degamma_lut_property: LUT used to convert the framebuffer's colors to linear |
2238 | * gamma | |
2239 | * @degamma_lut_size_property: size of the degamma LUT as supported by the | |
2240 | * driver (read-only) | |
2241 | * @ctm_property: Matrix used to convert colors after the lookup in the | |
2242 | * degamma LUT | |
2243 | * @gamma_lut_property: LUT used to convert the colors, after the CSC matrix, to | |
2244 | * the gamma space of the connected screen (read-only) | |
2245 | * @gamma_lut_size_property: size of the gamma LUT as supported by the driver | |
2c0c33d4 DV |
2246 | * @preferred_depth: preferred RBG pixel depth, used by fb helpers |
2247 | * @prefer_shadow: hint to userspace to prefer shadow-fb rendering | |
2248 | * @async_page_flip: does this device support async flips on the primary plane? | |
2249 | * @cursor_width: hint to userspace for max cursor width | |
2250 | * @cursor_height: hint to userspace for max cursor height | |
f453ba04 | 2251 | * |
a62c93d5 JB |
2252 | * Core mode resource tracking structure. All CRTC, encoders, and connectors |
2253 | * enumerated by the driver are added here, as are global properties. Some | |
2254 | * global restrictions are also here, e.g. dimension restrictions. | |
f453ba04 DA |
2255 | */ |
2256 | struct drm_mode_config { | |
ad2563c2 | 2257 | struct mutex mutex; /* protects configuration (mode lists etc.) */ |
51fd371b RC |
2258 | struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */ |
2259 | struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */ | |
ac3ba4a5 DV |
2260 | |
2261 | /** | |
2262 | * @idr_mutex: | |
2263 | * | |
2264 | * Mutex for KMS ID allocation and management. Protects both @crtc_idr | |
2265 | * and @tile_idr. | |
2266 | */ | |
2267 | struct mutex idr_mutex; | |
2268 | ||
2269 | /** | |
2270 | * @crtc_idr: | |
2271 | * | |
2272 | * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc, | |
2273 | * connector, modes - just makes life easier to have only one. | |
2274 | */ | |
2275 | struct idr crtc_idr; | |
2276 | ||
2277 | /** | |
2278 | * @tile_idr: | |
2279 | * | |
2280 | * Use this idr for allocating new IDs for tiled sinks like use in some | |
2281 | * high-res DP MST screens. | |
2282 | */ | |
2283 | struct idr tile_idr; | |
4b096ac1 | 2284 | |
2c0c33d4 | 2285 | struct mutex fb_lock; /* proctects global and per-file fb lists */ |
f453ba04 DA |
2286 | int num_fb; |
2287 | struct list_head fb_list; | |
4b096ac1 | 2288 | |
f453ba04 | 2289 | int num_connector; |
5fff80bb | 2290 | struct ida connector_ida; |
f453ba04 DA |
2291 | struct list_head connector_list; |
2292 | int num_encoder; | |
2293 | struct list_head encoder_list; | |
e27dde3e MR |
2294 | |
2295 | /* | |
2296 | * Track # of overlay planes separately from # of total planes. By | |
2297 | * default we only advertise overlay planes to userspace; if userspace | |
2298 | * sets the "universal plane" capability bit, we'll go ahead and | |
2299 | * expose all planes. | |
2300 | */ | |
2301 | int num_overlay_plane; | |
2302 | int num_total_plane; | |
8cf5c917 | 2303 | struct list_head plane_list; |
f453ba04 DA |
2304 | |
2305 | int num_crtc; | |
2306 | struct list_head crtc_list; | |
2307 | ||
2308 | struct list_head property_list; | |
2309 | ||
f453ba04 DA |
2310 | int min_width, min_height; |
2311 | int max_width, max_height; | |
e6ecefaa | 2312 | const struct drm_mode_config_funcs *funcs; |
d883f7f1 | 2313 | resource_size_t fb_base; |
f453ba04 | 2314 | |
eb1f8e4f DA |
2315 | /* output poll support */ |
2316 | bool poll_enabled; | |
905bc9ff | 2317 | bool poll_running; |
162b6a57 | 2318 | bool delayed_event; |
991ea75c | 2319 | struct delayed_work output_poll_work; |
eb1f8e4f | 2320 | |
8fb6e7a5 DS |
2321 | struct mutex blob_lock; |
2322 | ||
f453ba04 DA |
2323 | /* pointers to standard properties */ |
2324 | struct list_head property_blob_list; | |
2325 | struct drm_property *edid_property; | |
2326 | struct drm_property *dpms_property; | |
43aba7eb | 2327 | struct drm_property *path_property; |
6f134d7b | 2328 | struct drm_property *tile_property; |
9922ab5a | 2329 | struct drm_property *plane_type_property; |
2a297cce | 2330 | struct drm_property *rotation_property; |
6b4959f4 RC |
2331 | struct drm_property *prop_src_x; |
2332 | struct drm_property *prop_src_y; | |
2333 | struct drm_property *prop_src_w; | |
2334 | struct drm_property *prop_src_h; | |
2335 | struct drm_property *prop_crtc_x; | |
2336 | struct drm_property *prop_crtc_y; | |
2337 | struct drm_property *prop_crtc_w; | |
2338 | struct drm_property *prop_crtc_h; | |
2339 | struct drm_property *prop_fb_id; | |
2340 | struct drm_property *prop_crtc_id; | |
eab3bbef | 2341 | struct drm_property *prop_active; |
955f3c33 | 2342 | struct drm_property *prop_mode_id; |
f453ba04 DA |
2343 | |
2344 | /* DVI-I properties */ | |
2345 | struct drm_property *dvi_i_subconnector_property; | |
2346 | struct drm_property *dvi_i_select_subconnector_property; | |
2347 | ||
2348 | /* TV properties */ | |
2349 | struct drm_property *tv_subconnector_property; | |
2350 | struct drm_property *tv_select_subconnector_property; | |
2351 | struct drm_property *tv_mode_property; | |
2352 | struct drm_property *tv_left_margin_property; | |
2353 | struct drm_property *tv_right_margin_property; | |
2354 | struct drm_property *tv_top_margin_property; | |
2355 | struct drm_property *tv_bottom_margin_property; | |
b6b7902e FJ |
2356 | struct drm_property *tv_brightness_property; |
2357 | struct drm_property *tv_contrast_property; | |
2358 | struct drm_property *tv_flicker_reduction_property; | |
a75f0236 FJ |
2359 | struct drm_property *tv_overscan_property; |
2360 | struct drm_property *tv_saturation_property; | |
2361 | struct drm_property *tv_hue_property; | |
f453ba04 DA |
2362 | |
2363 | /* Optional properties */ | |
2364 | struct drm_property *scaling_mode_property; | |
ff587e45 | 2365 | struct drm_property *aspect_ratio_property; |
884840aa | 2366 | struct drm_property *dirty_info_property; |
019d96cb | 2367 | |
5488dc16 LL |
2368 | /* Optional color correction properties */ |
2369 | struct drm_property *degamma_lut_property; | |
2370 | struct drm_property *degamma_lut_size_property; | |
2371 | struct drm_property *ctm_property; | |
2372 | struct drm_property *gamma_lut_property; | |
2373 | struct drm_property *gamma_lut_size_property; | |
2374 | ||
5bb2bbf5 DA |
2375 | /* properties for virtual machine layout */ |
2376 | struct drm_property *suggested_x_property; | |
2377 | struct drm_property *suggested_y_property; | |
2378 | ||
019d96cb DA |
2379 | /* dumb ioctl parameters */ |
2380 | uint32_t preferred_depth, prefer_shadow; | |
62f2104f KP |
2381 | |
2382 | /* whether async page flip is supported or not */ | |
2383 | bool async_page_flip; | |
8716ed4e | 2384 | |
ac3ba4a5 DV |
2385 | /** |
2386 | * @allow_fb_modifiers: | |
2387 | * | |
2388 | * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call. | |
2389 | */ | |
e3eb3250 RC |
2390 | bool allow_fb_modifiers; |
2391 | ||
8716ed4e AD |
2392 | /* cursor size */ |
2393 | uint32_t cursor_width, cursor_height; | |
f453ba04 DA |
2394 | }; |
2395 | ||
dd275956 RC |
2396 | /** |
2397 | * drm_for_each_plane_mask - iterate over planes specified by bitmask | |
2398 | * @plane: the loop cursor | |
2399 | * @dev: the DRM device | |
2400 | * @plane_mask: bitmask of plane indices | |
2401 | * | |
2402 | * Iterate over all planes specified by bitmask. | |
2403 | */ | |
2404 | #define drm_for_each_plane_mask(plane, dev, plane_mask) \ | |
2405 | list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \ | |
373701b1 | 2406 | for_each_if ((plane_mask) & (1 << drm_plane_index(plane))) |
dd275956 | 2407 | |
ead8b665 ML |
2408 | /** |
2409 | * drm_for_each_encoder_mask - iterate over encoders specified by bitmask | |
2410 | * @encoder: the loop cursor | |
2411 | * @dev: the DRM device | |
2412 | * @encoder_mask: bitmask of encoder indices | |
2413 | * | |
2414 | * Iterate over all encoders specified by bitmask. | |
2415 | */ | |
2416 | #define drm_for_each_encoder_mask(encoder, dev, encoder_mask) \ | |
2417 | list_for_each_entry((encoder), &(dev)->mode_config.encoder_list, head) \ | |
2418 | for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder))) | |
dd275956 | 2419 | |
f453ba04 DA |
2420 | #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) |
2421 | #define obj_to_connector(x) container_of(x, struct drm_connector, base) | |
2422 | #define obj_to_encoder(x) container_of(x, struct drm_encoder, base) | |
2423 | #define obj_to_mode(x) container_of(x, struct drm_display_mode, base) | |
2424 | #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base) | |
2425 | #define obj_to_property(x) container_of(x, struct drm_property, base) | |
2426 | #define obj_to_blob(x) container_of(x, struct drm_property_blob, base) | |
8cf5c917 | 2427 | #define obj_to_plane(x) container_of(x, struct drm_plane, base) |
f453ba04 | 2428 | |
4a67d391 SH |
2429 | struct drm_prop_enum_list { |
2430 | int type; | |
2431 | char *name; | |
2432 | }; | |
f453ba04 | 2433 | |
f9882876 VS |
2434 | extern __printf(6, 7) |
2435 | int drm_crtc_init_with_planes(struct drm_device *dev, | |
2436 | struct drm_crtc *crtc, | |
2437 | struct drm_plane *primary, | |
2438 | struct drm_plane *cursor, | |
2439 | const struct drm_crtc_funcs *funcs, | |
2440 | const char *name, ...); | |
f453ba04 | 2441 | extern void drm_crtc_cleanup(struct drm_crtc *crtc); |
490d3d1b CW |
2442 | |
2443 | /** | |
2444 | * drm_crtc_index - find the index of a registered CRTC | |
2445 | * @crtc: CRTC to find index for | |
2446 | * | |
2447 | * Given a registered CRTC, return the index of that CRTC within a DRM | |
2448 | * device's list of CRTCs. | |
2449 | */ | |
2450 | static inline unsigned int drm_crtc_index(struct drm_crtc *crtc) | |
2451 | { | |
2452 | return crtc->index; | |
2453 | } | |
db5f7a6e RK |
2454 | |
2455 | /** | |
2456 | * drm_crtc_mask - find the mask of a registered CRTC | |
2457 | * @crtc: CRTC to find mask for | |
2458 | * | |
2459 | * Given a registered CRTC, return the mask bit of that CRTC for an | |
2460 | * encoder's possible_crtcs field. | |
2461 | */ | |
2462 | static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc) | |
2463 | { | |
2464 | return 1 << drm_crtc_index(crtc); | |
2465 | } | |
f453ba04 | 2466 | |
b21e3afe IM |
2467 | extern void drm_connector_ida_init(void); |
2468 | extern void drm_connector_ida_destroy(void); | |
6bfc56aa VS |
2469 | extern int drm_connector_init(struct drm_device *dev, |
2470 | struct drm_connector *connector, | |
2471 | const struct drm_connector_funcs *funcs, | |
2472 | int connector_type); | |
34ea3d38 TW |
2473 | int drm_connector_register(struct drm_connector *connector); |
2474 | void drm_connector_unregister(struct drm_connector *connector); | |
f453ba04 DA |
2475 | |
2476 | extern void drm_connector_cleanup(struct drm_connector *connector); | |
5fff80bb ML |
2477 | static inline unsigned drm_connector_index(struct drm_connector *connector) |
2478 | { | |
2479 | return connector->connector_id; | |
2480 | } | |
2481 | ||
54d2c2da AB |
2482 | /* helpers to {un}register all connectors from sysfs for device */ |
2483 | extern int drm_connector_register_all(struct drm_device *dev); | |
6c87e5c3 | 2484 | extern void drm_connector_unregister_all(struct drm_device *dev); |
f453ba04 | 2485 | |
3d3f8b1f AK |
2486 | extern int drm_bridge_add(struct drm_bridge *bridge); |
2487 | extern void drm_bridge_remove(struct drm_bridge *bridge); | |
2488 | extern struct drm_bridge *of_drm_find_bridge(struct device_node *np); | |
2489 | extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge); | |
3b336ec4 | 2490 | |
862e686c AT |
2491 | bool drm_bridge_mode_fixup(struct drm_bridge *bridge, |
2492 | const struct drm_display_mode *mode, | |
2493 | struct drm_display_mode *adjusted_mode); | |
2494 | void drm_bridge_disable(struct drm_bridge *bridge); | |
2495 | void drm_bridge_post_disable(struct drm_bridge *bridge); | |
2496 | void drm_bridge_mode_set(struct drm_bridge *bridge, | |
2497 | struct drm_display_mode *mode, | |
2498 | struct drm_display_mode *adjusted_mode); | |
2499 | void drm_bridge_pre_enable(struct drm_bridge *bridge); | |
2500 | void drm_bridge_enable(struct drm_bridge *bridge); | |
2501 | ||
13a3d91f VS |
2502 | extern __printf(5, 6) |
2503 | int drm_encoder_init(struct drm_device *dev, | |
2504 | struct drm_encoder *encoder, | |
2505 | const struct drm_encoder_funcs *funcs, | |
2506 | int encoder_type, const char *name, ...); | |
490d3d1b CW |
2507 | |
2508 | /** | |
2509 | * drm_encoder_index - find the index of a registered encoder | |
2510 | * @encoder: encoder to find index for | |
2511 | * | |
2512 | * Given a registered encoder, return the index of that encoder within a DRM | |
2513 | * device's list of encoders. | |
2514 | */ | |
2515 | static inline unsigned int drm_encoder_index(struct drm_encoder *encoder) | |
2516 | { | |
2517 | return encoder->index; | |
2518 | } | |
f453ba04 | 2519 | |
3d887368 TR |
2520 | /** |
2521 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
2522 | * @encoder: encoder to test | |
2523 | * @crtc: crtc to test | |
2524 | * | |
2525 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
2526 | */ | |
2527 | static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
2528 | struct drm_crtc *crtc) | |
2529 | { | |
2530 | return !!(encoder->possible_crtcs & drm_crtc_mask(crtc)); | |
2531 | } | |
2532 | ||
b0b3b795 VS |
2533 | extern __printf(8, 9) |
2534 | int drm_universal_plane_init(struct drm_device *dev, | |
2535 | struct drm_plane *plane, | |
2536 | unsigned long possible_crtcs, | |
2537 | const struct drm_plane_funcs *funcs, | |
2538 | const uint32_t *formats, | |
2539 | unsigned int format_count, | |
2540 | enum drm_plane_type type, | |
2541 | const char *name, ...); | |
8cf5c917 JB |
2542 | extern int drm_plane_init(struct drm_device *dev, |
2543 | struct drm_plane *plane, | |
2544 | unsigned long possible_crtcs, | |
2545 | const struct drm_plane_funcs *funcs, | |
45e3743a | 2546 | const uint32_t *formats, unsigned int format_count, |
dc415ff9 | 2547 | bool is_primary); |
8cf5c917 | 2548 | extern void drm_plane_cleanup(struct drm_plane *plane); |
490d3d1b CW |
2549 | |
2550 | /** | |
2551 | * drm_plane_index - find the index of a registered plane | |
2552 | * @plane: plane to find index for | |
2553 | * | |
2554 | * Given a registered plane, return the index of that plane within a DRM | |
2555 | * device's list of planes. | |
2556 | */ | |
2557 | static inline unsigned int drm_plane_index(struct drm_plane *plane) | |
2558 | { | |
2559 | return plane->index; | |
2560 | } | |
f81338a5 | 2561 | extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx); |
9125e618 | 2562 | extern void drm_plane_force_disable(struct drm_plane *plane); |
ead8610d LP |
2563 | extern int drm_plane_check_pixel_format(const struct drm_plane *plane, |
2564 | u32 format); | |
ecb7e16b GP |
2565 | extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, |
2566 | int *hdisplay, int *vdisplay); | |
af93629d MR |
2567 | extern int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
2568 | int x, int y, | |
2569 | const struct drm_display_mode *mode, | |
2570 | const struct drm_framebuffer *fb); | |
8cf5c917 | 2571 | |
f453ba04 DA |
2572 | extern void drm_encoder_cleanup(struct drm_encoder *encoder); |
2573 | ||
d20d3174 | 2574 | extern const char *drm_get_connector_status_name(enum drm_connector_status status); |
ac1bb36c | 2575 | extern const char *drm_get_subpixel_order_name(enum subpixel_order order); |
d20d3174 VS |
2576 | extern const char *drm_get_dpms_name(int val); |
2577 | extern const char *drm_get_dvi_i_subconnector_name(int val); | |
2578 | extern const char *drm_get_dvi_i_select_name(int val); | |
2579 | extern const char *drm_get_tv_subconnector_name(int val); | |
2580 | extern const char *drm_get_tv_select_name(int val); | |
ea39f835 | 2581 | extern void drm_fb_release(struct drm_file *file_priv); |
e2f5d2ea DS |
2582 | extern void drm_property_destroy_user_blobs(struct drm_device *dev, |
2583 | struct drm_file *file_priv); | |
fbff4690 | 2584 | extern bool drm_probe_ddc(struct i2c_adapter *adapter); |
f453ba04 DA |
2585 | extern struct edid *drm_get_edid(struct drm_connector *connector, |
2586 | struct i2c_adapter *adapter); | |
5cb8eaa2 LW |
2587 | extern struct edid *drm_get_edid_switcheroo(struct drm_connector *connector, |
2588 | struct i2c_adapter *adapter); | |
51f8da59 | 2589 | extern struct edid *drm_edid_duplicate(const struct edid *edid); |
f453ba04 | 2590 | extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); |
f453ba04 | 2591 | extern void drm_mode_config_init(struct drm_device *dev); |
eb033556 | 2592 | extern void drm_mode_config_reset(struct drm_device *dev); |
f453ba04 | 2593 | extern void drm_mode_config_cleanup(struct drm_device *dev); |
55310008 | 2594 | |
43aba7eb | 2595 | extern int drm_mode_connector_set_path_property(struct drm_connector *connector, |
12e6cecd | 2596 | const char *path); |
6f134d7b | 2597 | int drm_mode_connector_set_tile_property(struct drm_connector *connector); |
f453ba04 | 2598 | extern int drm_mode_connector_update_edid_property(struct drm_connector *connector, |
12e6cecd | 2599 | const struct edid *edid); |
5ea22f24 | 2600 | |
b5571e9d BB |
2601 | extern int drm_display_info_set_bus_formats(struct drm_display_info *info, |
2602 | const u32 *formats, | |
2603 | unsigned int num_formats); | |
2604 | ||
5ea22f24 RC |
2605 | static inline bool drm_property_type_is(struct drm_property *property, |
2606 | uint32_t type) | |
2607 | { | |
2608 | /* instanceof for props.. handles extended type vs original types: */ | |
2609 | if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) | |
2610 | return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type; | |
2611 | return property->flags & type; | |
2612 | } | |
2613 | ||
2614 | static inline bool drm_property_type_valid(struct drm_property *property) | |
2615 | { | |
2616 | if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) | |
2617 | return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE); | |
2618 | return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE); | |
2619 | } | |
2620 | ||
c543188a PZ |
2621 | extern int drm_object_property_set_value(struct drm_mode_object *obj, |
2622 | struct drm_property *property, | |
2623 | uint64_t val); | |
2624 | extern int drm_object_property_get_value(struct drm_mode_object *obj, | |
2625 | struct drm_property *property, | |
2626 | uint64_t *value); | |
f453ba04 DA |
2627 | extern int drm_framebuffer_init(struct drm_device *dev, |
2628 | struct drm_framebuffer *fb, | |
2629 | const struct drm_framebuffer_funcs *funcs); | |
786b99ed DV |
2630 | extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, |
2631 | uint32_t id); | |
f7eff60e | 2632 | extern void drm_framebuffer_remove(struct drm_framebuffer *fb); |
f453ba04 | 2633 | extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb); |
36206361 | 2634 | extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb); |
f453ba04 | 2635 | |
c543188a PZ |
2636 | extern void drm_object_attach_property(struct drm_mode_object *obj, |
2637 | struct drm_property *property, | |
2638 | uint64_t init_val); | |
f453ba04 DA |
2639 | extern struct drm_property *drm_property_create(struct drm_device *dev, int flags, |
2640 | const char *name, int num_values); | |
4a67d391 SH |
2641 | extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, |
2642 | const char *name, | |
49e27545 RC |
2643 | const struct drm_prop_enum_list *props, |
2644 | int num_values); | |
2645 | struct drm_property *drm_property_create_bitmask(struct drm_device *dev, | |
2646 | int flags, const char *name, | |
4a67d391 | 2647 | const struct drm_prop_enum_list *props, |
7689ffb3 VS |
2648 | int num_props, |
2649 | uint64_t supported_bits); | |
d9bc3c02 SH |
2650 | struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, |
2651 | const char *name, | |
2652 | uint64_t min, uint64_t max); | |
ebc44cf3 RC |
2653 | struct drm_property *drm_property_create_signed_range(struct drm_device *dev, |
2654 | int flags, const char *name, | |
2655 | int64_t min, int64_t max); | |
98f75de4 RC |
2656 | struct drm_property *drm_property_create_object(struct drm_device *dev, |
2657 | int flags, const char *name, uint32_t type); | |
960cd9d4 DV |
2658 | struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags, |
2659 | const char *name); | |
6bcacf51 DS |
2660 | struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, |
2661 | size_t length, | |
2662 | const void *data); | |
2663 | struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev, | |
2664 | uint32_t id); | |
2665 | struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob); | |
2666 | void drm_property_unreference_blob(struct drm_property_blob *blob); | |
f453ba04 DA |
2667 | extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property); |
2668 | extern int drm_property_add_enum(struct drm_property *property, int index, | |
2669 | uint64_t value, const char *name); | |
2670 | extern int drm_mode_create_dvi_i_properties(struct drm_device *dev); | |
2f763312 TR |
2671 | extern int drm_mode_create_tv_properties(struct drm_device *dev, |
2672 | unsigned int num_modes, | |
b7c914b3 | 2673 | const char * const modes[]); |
f453ba04 | 2674 | extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); |
ff587e45 | 2675 | extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev); |
884840aa | 2676 | extern int drm_mode_create_dirty_info_property(struct drm_device *dev); |
5bb2bbf5 | 2677 | extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev); |
d34f20d6 RC |
2678 | extern bool drm_property_change_valid_get(struct drm_property *property, |
2679 | uint64_t value, struct drm_mode_object **ref); | |
2680 | extern void drm_property_change_valid_put(struct drm_property *property, | |
2681 | struct drm_mode_object *ref); | |
f453ba04 DA |
2682 | |
2683 | extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, | |
2684 | struct drm_encoder *encoder); | |
4cae5b84 | 2685 | extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, |
f453ba04 | 2686 | int gamma_size); |
7a9c9060 DV |
2687 | extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, |
2688 | uint32_t id, uint32_t type); | |
d0f37cf6 DA |
2689 | void drm_mode_object_reference(struct drm_mode_object *obj); |
2690 | void drm_mode_object_unreference(struct drm_mode_object *obj); | |
98f75de4 | 2691 | |
f453ba04 DA |
2692 | /* IOCTLs */ |
2693 | extern int drm_mode_getresources(struct drm_device *dev, | |
2694 | void *data, struct drm_file *file_priv); | |
8cf5c917 JB |
2695 | extern int drm_mode_getplane_res(struct drm_device *dev, void *data, |
2696 | struct drm_file *file_priv); | |
f453ba04 DA |
2697 | extern int drm_mode_getcrtc(struct drm_device *dev, |
2698 | void *data, struct drm_file *file_priv); | |
2699 | extern int drm_mode_getconnector(struct drm_device *dev, | |
2700 | void *data, struct drm_file *file_priv); | |
2d13b679 | 2701 | extern int drm_mode_set_config_internal(struct drm_mode_set *set); |
f453ba04 DA |
2702 | extern int drm_mode_setcrtc(struct drm_device *dev, |
2703 | void *data, struct drm_file *file_priv); | |
8cf5c917 JB |
2704 | extern int drm_mode_getplane(struct drm_device *dev, |
2705 | void *data, struct drm_file *file_priv); | |
2706 | extern int drm_mode_setplane(struct drm_device *dev, | |
2707 | void *data, struct drm_file *file_priv); | |
f453ba04 DA |
2708 | extern int drm_mode_cursor_ioctl(struct drm_device *dev, |
2709 | void *data, struct drm_file *file_priv); | |
4c813d4d DA |
2710 | extern int drm_mode_cursor2_ioctl(struct drm_device *dev, |
2711 | void *data, struct drm_file *file_priv); | |
f453ba04 DA |
2712 | extern int drm_mode_addfb(struct drm_device *dev, |
2713 | void *data, struct drm_file *file_priv); | |
308e5bcb JB |
2714 | extern int drm_mode_addfb2(struct drm_device *dev, |
2715 | void *data, struct drm_file *file_priv); | |
2716 | extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); | |
f453ba04 DA |
2717 | extern int drm_mode_rmfb(struct drm_device *dev, |
2718 | void *data, struct drm_file *file_priv); | |
2719 | extern int drm_mode_getfb(struct drm_device *dev, | |
2720 | void *data, struct drm_file *file_priv); | |
884840aa JB |
2721 | extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev, |
2722 | void *data, struct drm_file *file_priv); | |
f453ba04 DA |
2723 | |
2724 | extern int drm_mode_getproperty_ioctl(struct drm_device *dev, | |
2725 | void *data, struct drm_file *file_priv); | |
2726 | extern int drm_mode_getblob_ioctl(struct drm_device *dev, | |
2727 | void *data, struct drm_file *file_priv); | |
e2f5d2ea DS |
2728 | extern int drm_mode_createblob_ioctl(struct drm_device *dev, |
2729 | void *data, struct drm_file *file_priv); | |
2730 | extern int drm_mode_destroyblob_ioctl(struct drm_device *dev, | |
2731 | void *data, struct drm_file *file_priv); | |
f453ba04 DA |
2732 | extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev, |
2733 | void *data, struct drm_file *file_priv); | |
f453ba04 DA |
2734 | extern int drm_mode_getencoder(struct drm_device *dev, |
2735 | void *data, struct drm_file *file_priv); | |
2736 | extern int drm_mode_gamma_get_ioctl(struct drm_device *dev, | |
2737 | void *data, struct drm_file *file_priv); | |
2738 | extern int drm_mode_gamma_set_ioctl(struct drm_device *dev, | |
2739 | void *data, struct drm_file *file_priv); | |
18316c8c | 2740 | extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match); |
0967e6a5 | 2741 | extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code); |
f23c20c8 | 2742 | extern bool drm_detect_hdmi_monitor(struct edid *edid); |
8fe9790d | 2743 | extern bool drm_detect_monitor_audio(struct edid *edid); |
b1edd6a6 | 2744 | extern bool drm_rgb_quant_range_selectable(struct edid *edid); |
d91d8a3f KH |
2745 | extern int drm_mode_page_flip_ioctl(struct drm_device *dev, |
2746 | void *data, struct drm_file *file_priv); | |
f0fda0a4 ZY |
2747 | extern int drm_add_modes_noedid(struct drm_connector *connector, |
2748 | int hdisplay, int vdisplay); | |
3cf70daf GH |
2749 | extern void drm_set_preferred_mode(struct drm_connector *connector, |
2750 | int hpref, int vpref); | |
3c537889 | 2751 | |
051963d4 | 2752 | extern int drm_edid_header_is_valid(const u8 *raw_edid); |
6ba2bd3d TP |
2753 | extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid, |
2754 | bool *edid_corrupt); | |
3c537889 | 2755 | extern bool drm_edid_is_valid(struct edid *edid); |
59f7c0fa JB |
2756 | extern void drm_edid_get_monitor_name(struct edid *edid, char *name, |
2757 | int buflen); | |
138f9ebb DA |
2758 | |
2759 | extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
2760 | char topology[8]); | |
2761 | extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
2762 | char topology[8]); | |
2763 | extern void drm_mode_put_tile_group(struct drm_device *dev, | |
2764 | struct drm_tile_group *tg); | |
1d42bbc8 | 2765 | struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, |
f6e252ba AJ |
2766 | int hsize, int vsize, int fresh, |
2767 | bool rb); | |
ff72145b DA |
2768 | |
2769 | extern int drm_mode_create_dumb_ioctl(struct drm_device *dev, | |
2770 | void *data, struct drm_file *file_priv); | |
2771 | extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, | |
2772 | void *data, struct drm_file *file_priv); | |
2773 | extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, | |
2774 | void *data, struct drm_file *file_priv); | |
c543188a PZ |
2775 | extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, |
2776 | struct drm_file *file_priv); | |
2777 | extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, | |
2778 | struct drm_file *file_priv); | |
3a5f87c2 TW |
2779 | extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane, |
2780 | struct drm_property *property, | |
2781 | uint64_t value); | |
d34f20d6 RC |
2782 | extern int drm_mode_atomic_ioctl(struct drm_device *dev, |
2783 | void *data, struct drm_file *file_priv); | |
248dbc23 | 2784 | |
c1df5f3c VS |
2785 | extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, |
2786 | unsigned int supported_rotations); | |
3c9855f6 VS |
2787 | extern unsigned int drm_rotation_simplify(unsigned int rotation, |
2788 | unsigned int supported_rotations); | |
f8ed34ac JS |
2789 | extern void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, |
2790 | uint degamma_lut_size, | |
2791 | bool has_ctm, | |
2792 | uint gamma_lut_size); | |
96f60e37 | 2793 | /* Helpers */ |
a2b34e22 RC |
2794 | |
2795 | static inline struct drm_plane *drm_plane_find(struct drm_device *dev, | |
2796 | uint32_t id) | |
2797 | { | |
2798 | struct drm_mode_object *mo; | |
2799 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE); | |
2800 | return mo ? obj_to_plane(mo) : NULL; | |
2801 | } | |
2802 | ||
96f60e37 RK |
2803 | static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, |
2804 | uint32_t id) | |
2805 | { | |
2806 | struct drm_mode_object *mo; | |
2807 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); | |
2808 | return mo ? obj_to_crtc(mo) : NULL; | |
2809 | } | |
2810 | ||
2811 | static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev, | |
2812 | uint32_t id) | |
2813 | { | |
2814 | struct drm_mode_object *mo; | |
2815 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER); | |
2816 | return mo ? obj_to_encoder(mo) : NULL; | |
2817 | } | |
2818 | ||
b164d31f DA |
2819 | /** |
2820 | * drm_connector_lookup - lookup connector object | |
2821 | * @dev: DRM device | |
2822 | * @id: connector object id | |
2823 | * | |
2824 | * This function looks up the connector object specified by id | |
2825 | * add takes a reference to it. | |
2826 | */ | |
2827 | static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, | |
a2b34e22 RC |
2828 | uint32_t id) |
2829 | { | |
2830 | struct drm_mode_object *mo; | |
2831 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR); | |
2832 | return mo ? obj_to_connector(mo) : NULL; | |
2833 | } | |
2834 | ||
2835 | static inline struct drm_property *drm_property_find(struct drm_device *dev, | |
2836 | uint32_t id) | |
2837 | { | |
2838 | struct drm_mode_object *mo; | |
2839 | mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY); | |
2840 | return mo ? obj_to_property(mo) : NULL; | |
2841 | } | |
2842 | ||
5488dc16 LL |
2843 | /* |
2844 | * Extract a degamma/gamma LUT value provided by user and round it to the | |
2845 | * precision supported by the hardware. | |
2846 | */ | |
2847 | static inline uint32_t drm_color_lut_extract(uint32_t user_input, | |
2848 | uint32_t bit_precision) | |
2849 | { | |
644a8050 | 2850 | uint32_t val = user_input; |
5488dc16 LL |
2851 | uint32_t max = 0xffff >> (16 - bit_precision); |
2852 | ||
644a8050 LL |
2853 | /* Round only if we're not using full precision. */ |
2854 | if (bit_precision < 16) { | |
2855 | val += 1UL << (16 - bit_precision - 1); | |
2856 | val >>= 16 - bit_precision; | |
2857 | } | |
5488dc16 LL |
2858 | |
2859 | return clamp_val(val, 0, max); | |
2860 | } | |
2861 | ||
e76d399f | 2862 | /** |
d0f37cf6 DA |
2863 | * drm_framebuffer_reference - incr the fb refcnt |
2864 | * @fb: framebuffer | |
2865 | * | |
2866 | * This functions increments the fb's refcount. | |
2867 | */ | |
2868 | static inline void drm_framebuffer_reference(struct drm_framebuffer *fb) | |
2869 | { | |
2870 | drm_mode_object_reference(&fb->base); | |
2871 | } | |
2872 | ||
2873 | /** | |
2874 | * drm_framebuffer_unreference - unref a framebuffer | |
2875 | * @fb: framebuffer to unref | |
2876 | * | |
2877 | * This functions decrements the fb's refcount and frees it if it drops to zero. | |
2878 | */ | |
2879 | static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb) | |
2880 | { | |
2881 | drm_mode_object_unreference(&fb->base); | |
2882 | } | |
2883 | ||
747a598f DA |
2884 | /** |
2885 | * drm_framebuffer_read_refcount - read the framebuffer reference count. | |
2886 | * @fb: framebuffer | |
2887 | * | |
2888 | * This functions returns the framebuffer's reference count. | |
2889 | */ | |
2890 | static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb) | |
2891 | { | |
d0f37cf6 | 2892 | return atomic_read(&fb->base.refcount.refcount); |
747a598f DA |
2893 | } |
2894 | ||
b164d31f DA |
2895 | /** |
2896 | * drm_connector_reference - incr the connector refcnt | |
2897 | * @connector: connector | |
2898 | * | |
2899 | * This function increments the connector's refcount. | |
2900 | */ | |
2901 | static inline void drm_connector_reference(struct drm_connector *connector) | |
2902 | { | |
2903 | drm_mode_object_reference(&connector->base); | |
2904 | } | |
2905 | ||
2906 | /** | |
2907 | * drm_connector_unreference - unref a connector | |
2908 | * @connector: connector to unref | |
2909 | * | |
2910 | * This function decrements the connector's refcount and frees it if it drops to zero. | |
2911 | */ | |
2912 | static inline void drm_connector_unreference(struct drm_connector *connector) | |
2913 | { | |
2914 | drm_mode_object_unreference(&connector->base); | |
2915 | } | |
2916 | ||
e27dde3e | 2917 | /* Plane list iterator for legacy (overlay only) planes. */ |
4ea50e99 DV |
2918 | #define drm_for_each_legacy_plane(plane, dev) \ |
2919 | list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \ | |
373701b1 | 2920 | for_each_if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
e27dde3e | 2921 | |
6295d607 DV |
2922 | #define drm_for_each_plane(plane, dev) \ |
2923 | list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) | |
2924 | ||
2925 | #define drm_for_each_crtc(crtc, dev) \ | |
2926 | list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head) | |
2927 | ||
7a3f3d66 DV |
2928 | static inline void |
2929 | assert_drm_connector_list_read_locked(struct drm_mode_config *mode_config) | |
2930 | { | |
cff20ba2 DV |
2931 | /* |
2932 | * The connector hotadd/remove code currently grabs both locks when | |
2933 | * updating lists. Hence readers need only hold either of them to be | |
2934 | * safe and the check amounts to | |
2935 | * | |
2936 | * WARN_ON(not_holding(A) && not_holding(B)). | |
2937 | */ | |
2938 | WARN_ON(!mutex_is_locked(&mode_config->mutex) && | |
2939 | !drm_modeset_is_locked(&mode_config->connection_mutex)); | |
7a3f3d66 DV |
2940 | } |
2941 | ||
6295d607 | 2942 | #define drm_for_each_connector(connector, dev) \ |
7a3f3d66 DV |
2943 | for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \ |
2944 | connector = list_first_entry(&(dev)->mode_config.connector_list, \ | |
2945 | struct drm_connector, head); \ | |
2946 | &connector->head != (&(dev)->mode_config.connector_list); \ | |
2947 | connector = list_next_entry(connector, head)) | |
6295d607 DV |
2948 | |
2949 | #define drm_for_each_encoder(encoder, dev) \ | |
2950 | list_for_each_entry(encoder, &(dev)->mode_config.encoder_list, head) | |
2951 | ||
2952 | #define drm_for_each_fb(fb, dev) \ | |
4676ba0b DV |
2953 | for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)), \ |
2954 | fb = list_first_entry(&(dev)->mode_config.fb_list, \ | |
2955 | struct drm_framebuffer, head); \ | |
2956 | &fb->head != (&(dev)->mode_config.fb_list); \ | |
2957 | fb = list_next_entry(fb, head)) | |
6295d607 | 2958 | |
f453ba04 | 2959 | #endif /* __DRM_CRTC_H__ */ |