2 * Copyright © 2006 Keith Packard
3 * Copyright © 2007-2008 Dave Airlie
4 * Copyright © 2007-2008 Intel Corporation
5 * Jesse Barnes <jesse.barnes@intel.com>
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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.
25 #ifndef __DRM_CRTC_H__
26 #define __DRM_CRTC_H__
28 #include <linux/i2c.h>
29 #include <linux/spinlock.h>
30 #include <linux/types.h>
31 #include <linux/idr.h>
33 #include <linux/hdmi.h>
34 #include <uapi/drm/drm_mode.h>
35 #include <uapi/drm/drm_fourcc.h>
36 #include <drm/drm_modeset_lock.h>
40 struct drm_framebuffer;
41 struct drm_object_properties;
46 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
47 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
48 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
49 #define DRM_MODE_OBJECT_MODE 0xdededede
50 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
51 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
52 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
53 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
54 #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd
55 #define DRM_MODE_OBJECT_ANY 0
57 struct drm_mode_object {
60 struct drm_object_properties *properties;
63 #define DRM_OBJECT_MAX_PROPERTY 24
64 struct drm_object_properties {
66 uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
67 uint64_t values[DRM_OBJECT_MAX_PROPERTY];
70 static inline int64_t U642I64(uint64_t val)
72 return (int64_t)*((int64_t *)&val);
74 static inline uint64_t I642U64(int64_t val)
76 return (uint64_t)*((uint64_t *)&val);
79 /* rotation property bits */
80 #define DRM_ROTATE_0 0
81 #define DRM_ROTATE_90 1
82 #define DRM_ROTATE_180 2
83 #define DRM_ROTATE_270 3
84 #define DRM_REFLECT_X 4
85 #define DRM_REFLECT_Y 5
87 enum drm_connector_force {
88 DRM_FORCE_UNSPECIFIED,
90 DRM_FORCE_ON, /* force on analog part normally */
91 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
94 #include <drm/drm_modes.h>
96 enum drm_connector_status {
97 connector_status_connected = 1,
98 connector_status_disconnected = 2,
99 connector_status_unknown = 3,
102 enum subpixel_order {
104 SubPixelHorizontalRGB,
105 SubPixelHorizontalBGR,
111 #define DRM_COLOR_FORMAT_RGB444 (1<<0)
112 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1)
113 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2)
115 * Describes a given display (e.g. CRT or flat panel) and its limitations.
117 struct drm_display_info {
118 char name[DRM_DISPLAY_INFO_LEN];
121 unsigned int width_mm;
122 unsigned int height_mm;
124 /* Clock limits FIXME: storage format */
125 unsigned int min_vfreq, max_vfreq;
126 unsigned int min_hfreq, max_hfreq;
127 unsigned int pixel_clock;
130 enum subpixel_order subpixel_order;
133 /* Mask of supported hdmi deep color modes */
134 u8 edid_hdmi_dc_modes;
139 struct drm_framebuffer_funcs {
140 /* note: use drm_framebuffer_remove() */
141 void (*destroy)(struct drm_framebuffer *framebuffer);
142 int (*create_handle)(struct drm_framebuffer *fb,
143 struct drm_file *file_priv,
144 unsigned int *handle);
146 * Optional callback for the dirty fb ioctl.
148 * Userspace can notify the driver via this callback
149 * that a area of the framebuffer has changed and should
150 * be flushed to the display hardware.
152 * See documentation in drm_mode.h for the struct
153 * drm_mode_fb_dirty_cmd for more information as all
154 * the semantics and arguments have a one to one mapping
157 int (*dirty)(struct drm_framebuffer *framebuffer,
158 struct drm_file *file_priv, unsigned flags,
159 unsigned color, struct drm_clip_rect *clips,
163 struct drm_framebuffer {
164 struct drm_device *dev;
166 * Note that the fb is refcounted for the benefit of driver internals,
167 * for example some hw, disabling a CRTC/plane is asynchronous, and
168 * scanout does not actually complete until the next vblank. So some
169 * cleanup (like releasing the reference(s) on the backing GEM bo(s))
170 * should be deferred. In cases like this, the driver would like to
171 * hold a ref to the fb even though it has already been removed from
172 * userspace perspective.
174 struct kref refcount;
176 * Place on the dev->mode_config.fb_list, access protected by
177 * dev->mode_config.fb_lock.
179 struct list_head head;
180 struct drm_mode_object base;
181 const struct drm_framebuffer_funcs *funcs;
182 unsigned int pitches[4];
183 unsigned int offsets[4];
186 /* depth can be 15 or 16 */
190 uint32_t pixel_format; /* fourcc format */
191 struct list_head filp_head;
192 /* if you are using the helper */
193 void *helper_private;
196 struct drm_property_blob {
197 struct drm_mode_object base;
198 struct list_head head;
200 unsigned char data[];
203 struct drm_property_enum {
205 struct list_head head;
206 char name[DRM_PROP_NAME_LEN];
209 struct drm_property {
210 struct list_head head;
211 struct drm_mode_object base;
213 char name[DRM_PROP_NAME_LEN];
216 struct drm_device *dev;
218 struct list_head enum_blob_list;
222 struct drm_connector;
224 struct drm_pending_vblank_event;
227 struct drm_atomic_state;
230 * struct drm_crtc_state - mutable CRTC state
231 * @enable: whether the CRTC should be enabled, gates all other state
232 * @mode_changed: for use by helpers and drivers when computing state updates
233 * @last_vblank_count: for helpers and drivers to capture the vblank of the
234 * update to ensure framebuffer cleanup isn't done too early
235 * @planes_changed: for use by helpers and drivers when computing state updates
236 * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
237 * @mode: current mode timings
238 * @event: optional pointer to a DRM event to signal upon completion of the
240 * @state: backpointer to global drm_atomic_state
242 struct drm_crtc_state {
245 /* computed state bits used by helpers and drivers */
246 bool planes_changed : 1;
247 bool mode_changed : 1;
249 /* last_vblank_count: for vblank waits before cleanup */
250 u32 last_vblank_count;
252 /* adjusted_mode: for use by helpers and drivers */
253 struct drm_display_mode adjusted_mode;
255 struct drm_display_mode mode;
257 struct drm_pending_vblank_event *event;
259 struct drm_atomic_state *state;
263 * struct drm_crtc_funcs - control CRTCs for a given device
264 * @save: save CRTC state
265 * @restore: restore CRTC state
266 * @reset: reset CRTC after state has been invalidated (e.g. resume)
267 * @cursor_set: setup the cursor
268 * @cursor_set2: setup the cursor with hotspot, superseeds @cursor_set if set
269 * @cursor_move: move the cursor
270 * @gamma_set: specify color ramp for CRTC
271 * @destroy: deinit and free object
272 * @set_property: called when a property is changed
273 * @set_config: apply a new CRTC configuration
274 * @page_flip: initiate a page flip
275 * @atomic_duplicate_state: duplicate the atomic state for this CRTC
276 * @atomic_destroy_state: destroy an atomic state for this CRTC
277 * @atomic_set_property: set a property on an atomic state for this CRTC
279 * The drm_crtc_funcs structure is the central CRTC management structure
280 * in the DRM. Each CRTC controls one or more connectors (note that the name
281 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
282 * connectors, not just CRTs).
284 * Each driver is responsible for filling out this structure at startup time,
285 * in addition to providing other modesetting features, like i2c and DDC
288 struct drm_crtc_funcs {
289 /* Save CRTC state */
290 void (*save)(struct drm_crtc *crtc); /* suspend? */
291 /* Restore CRTC state */
292 void (*restore)(struct drm_crtc *crtc); /* resume? */
293 /* Reset CRTC state */
294 void (*reset)(struct drm_crtc *crtc);
296 /* cursor controls */
297 int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
298 uint32_t handle, uint32_t width, uint32_t height);
299 int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
300 uint32_t handle, uint32_t width, uint32_t height,
301 int32_t hot_x, int32_t hot_y);
302 int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
304 /* Set gamma on the CRTC */
305 void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
306 uint32_t start, uint32_t size);
307 /* Object destroy routine */
308 void (*destroy)(struct drm_crtc *crtc);
310 int (*set_config)(struct drm_mode_set *set);
313 * Flip to the given framebuffer. This implements the page
314 * flip ioctl described in drm_mode.h, specifically, the
315 * implementation must return immediately and block all
316 * rendering to the current fb until the flip has completed.
317 * If userspace set the event flag in the ioctl, the event
318 * argument will point to an event to send back when the flip
319 * completes, otherwise it will be NULL.
321 int (*page_flip)(struct drm_crtc *crtc,
322 struct drm_framebuffer *fb,
323 struct drm_pending_vblank_event *event,
326 int (*set_property)(struct drm_crtc *crtc,
327 struct drm_property *property, uint64_t val);
329 /* atomic update handling */
330 struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc);
331 void (*atomic_destroy_state)(struct drm_crtc *crtc,
332 struct drm_crtc_state *state);
333 int (*atomic_set_property)(struct drm_crtc *crtc,
334 struct drm_crtc_state *state,
335 struct drm_property *property,
340 * struct drm_crtc - central CRTC control structure
341 * @dev: parent DRM device
342 * @port: OF node used by drm_of_find_possible_crtcs()
343 * @head: list management
344 * @mutex: per-CRTC locking
345 * @base: base KMS object for ID tracking etc.
346 * @primary: primary plane for this CRTC
347 * @cursor: cursor plane for this CRTC
348 * @cursor_x: current x position of the cursor, used for universal cursor planes
349 * @cursor_y: current y position of the cursor, used for universal cursor planes
350 * @enabled: is this CRTC enabled?
351 * @mode: current mode timings
352 * @hwmode: mode timings as programmed to hw regs
353 * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
354 * invert the width/height of the crtc. This is used if the driver
355 * is performing 90 or 270 degree rotated scanout
356 * @x: x position on screen
357 * @y: y position on screen
358 * @funcs: CRTC control functions
359 * @gamma_size: size of gamma ramp
360 * @gamma_store: gamma ramp values
361 * @framedur_ns: precise frame timing
362 * @linedur_ns: precise line timing
363 * @pixeldur_ns: precise pixel timing
364 * @helper_private: mid-layer private data
365 * @properties: property tracking for this CRTC
366 * @state: current atomic state for this CRTC
367 * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for
370 * Each CRTC may have one or more connectors associated with it. This structure
371 * allows the CRTC to be controlled.
374 struct drm_device *dev;
375 struct device_node *port;
376 struct list_head head;
381 * This provides a read lock for the overall crtc state (mode, dpms
382 * state, ...) and a write lock for everything which can be update
383 * without a full modeset (fb, cursor data, ...)
385 struct drm_modeset_lock mutex;
387 struct drm_mode_object base;
389 /* primary and cursor planes for CRTC */
390 struct drm_plane *primary;
391 struct drm_plane *cursor;
393 /* position of cursor plane on crtc */
399 /* Requested mode from modesetting. */
400 struct drm_display_mode mode;
402 /* Programmed mode in hw, after adjustments for encoders,
403 * crtc, panel scaling etc. Needed for timestamping etc.
405 struct drm_display_mode hwmode;
407 bool invert_dimensions;
410 const struct drm_crtc_funcs *funcs;
412 /* CRTC gamma size for reporting to userspace */
414 uint16_t *gamma_store;
416 /* Constants needed for precise vblank and swap timestamping. */
417 int framedur_ns, linedur_ns, pixeldur_ns;
419 /* if you are using the helper */
420 void *helper_private;
422 struct drm_object_properties properties;
424 struct drm_crtc_state *state;
427 * For legacy crtc ioctls so that atomic drivers can get at the locking
430 struct drm_modeset_acquire_ctx *acquire_ctx;
434 * struct drm_connector_state - mutable connector state
435 * @crtc: CRTC to connect connector to, NULL if disabled
436 * @best_encoder: can be used by helpers and drivers to select the encoder
437 * @state: backpointer to global drm_atomic_state
439 struct drm_connector_state {
440 struct drm_crtc *crtc;
442 struct drm_encoder *best_encoder;
444 struct drm_atomic_state *state;
448 * struct drm_connector_funcs - control connectors on a given device
449 * @dpms: set power state (see drm_crtc_funcs above)
450 * @save: save connector state
451 * @restore: restore connector state
452 * @reset: reset connector after state has been invalidated (e.g. resume)
453 * @detect: is this connector active?
454 * @fill_modes: fill mode list for this connector
455 * @set_property: property for this connector may need an update
456 * @destroy: make object go away
457 * @force: notify the driver that the connector is forced on
458 * @atomic_duplicate_state: duplicate the atomic state for this connector
459 * @atomic_destroy_state: destroy an atomic state for this connector
460 * @atomic_set_property: set a property on an atomic state for this connector
462 * Each CRTC may have one or more connectors attached to it. The functions
463 * below allow the core DRM code to control connectors, enumerate available modes,
466 struct drm_connector_funcs {
467 void (*dpms)(struct drm_connector *connector, int mode);
468 void (*save)(struct drm_connector *connector);
469 void (*restore)(struct drm_connector *connector);
470 void (*reset)(struct drm_connector *connector);
472 /* Check to see if anything is attached to the connector.
473 * @force is set to false whilst polling, true when checking the
474 * connector due to user request. @force can be used by the driver
475 * to avoid expensive, destructive operations during automated
478 enum drm_connector_status (*detect)(struct drm_connector *connector,
480 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
481 int (*set_property)(struct drm_connector *connector, struct drm_property *property,
483 void (*destroy)(struct drm_connector *connector);
484 void (*force)(struct drm_connector *connector);
486 /* atomic update handling */
487 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
488 void (*atomic_destroy_state)(struct drm_connector *connector,
489 struct drm_connector_state *state);
490 int (*atomic_set_property)(struct drm_connector *connector,
491 struct drm_connector_state *state,
492 struct drm_property *property,
497 * struct drm_encoder_funcs - encoder controls
498 * @reset: reset state (e.g. at init or resume time)
499 * @destroy: cleanup and free associated data
501 * Encoders sit between CRTCs and connectors.
503 struct drm_encoder_funcs {
504 void (*reset)(struct drm_encoder *encoder);
505 void (*destroy)(struct drm_encoder *encoder);
508 #define DRM_CONNECTOR_MAX_ENCODER 3
511 * struct drm_encoder - central DRM encoder structure
512 * @dev: parent DRM device
513 * @head: list management
514 * @base: base KMS object
515 * @name: encoder name
516 * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
517 * @possible_crtcs: bitmask of potential CRTC bindings
518 * @possible_clones: bitmask of potential sibling encoders for cloning
519 * @crtc: currently bound CRTC
520 * @bridge: bridge associated to the encoder
521 * @funcs: control functions
522 * @helper_private: mid-layer private data
524 * CRTCs drive pixels to encoders, which convert them into signals
525 * appropriate for a given connector or set of connectors.
528 struct drm_device *dev;
529 struct list_head head;
531 struct drm_mode_object base;
534 uint32_t possible_crtcs;
535 uint32_t possible_clones;
537 struct drm_crtc *crtc;
538 struct drm_bridge *bridge;
539 const struct drm_encoder_funcs *funcs;
540 void *helper_private;
543 /* should we poll this connector for connects and disconnects */
544 /* hot plug detectable */
545 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
546 /* poll for connections */
547 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
548 /* can cleanly poll for disconnections without flickering the screen */
549 /* DACs should rarely do this without a lot of testing */
550 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
552 #define MAX_ELD_BYTES 128
555 * struct drm_connector - central DRM connector control structure
556 * @dev: parent DRM device
557 * @kdev: kernel device for sysfs attributes
558 * @attr: sysfs attributes
559 * @head: list management
560 * @base: base KMS object
561 * @name: connector name
562 * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
563 * @connector_type_id: index into connector type enum
564 * @interlace_allowed: can this connector handle interlaced modes?
565 * @doublescan_allowed: can this connector handle doublescan?
566 * @stereo_allowed: can this connector handle stereo modes?
567 * @modes: modes available on this connector (from fill_modes() + user)
568 * @status: one of the drm_connector_status enums (connected, not, or unknown)
569 * @probed_modes: list of modes derived directly from the display
570 * @display_info: information about attached display (e.g. from EDID)
571 * @funcs: connector control functions
572 * @edid_blob_ptr: DRM property containing EDID if present
573 * @properties: property tracking for this connector
574 * @path_blob_ptr: DRM blob property data for the DP MST path property
575 * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
576 * @dpms: current dpms state
577 * @helper_private: mid-layer private data
578 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
579 * @force: a %DRM_FORCE_<foo> state for forced mode sets
580 * @override_edid: has the EDID been overwritten through debugfs for testing?
581 * @encoder_ids: valid encoders for this connector
582 * @encoder: encoder driving this connector, if any
583 * @eld: EDID-like data, if present
584 * @dvi_dual: dual link DVI, if found
585 * @max_tmds_clock: max clock rate, if found
586 * @latency_present: AV delay info from ELD, if found
587 * @video_latency: video latency info from ELD, if found
588 * @audio_latency: audio latency info from ELD, if found
589 * @null_edid_counter: track sinks that give us all zeros for the EDID
590 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
591 * @debugfs_entry: debugfs directory for this connector
592 * @state: current atomic state for this connector
594 * Each connector may be connected to one or more CRTCs, or may be clonable by
595 * another connector if they can share a CRTC. Each connector also has a specific
596 * position in the broader display (referred to as a 'screen' though it could
597 * span multiple monitors).
599 struct drm_connector {
600 struct drm_device *dev;
602 struct device_attribute *attr;
603 struct list_head head;
605 struct drm_mode_object base;
609 int connector_type_id;
610 bool interlace_allowed;
611 bool doublescan_allowed;
613 struct list_head modes; /* list of modes on this connector */
615 enum drm_connector_status status;
617 /* these are modes added by probing with DDC or the BIOS */
618 struct list_head probed_modes;
620 struct drm_display_info display_info;
621 const struct drm_connector_funcs *funcs;
623 struct drm_property_blob *edid_blob_ptr;
624 struct drm_object_properties properties;
626 struct drm_property_blob *path_blob_ptr;
628 uint8_t polled; /* DRM_CONNECTOR_POLL_* */
630 /* requested DPMS state */
633 void *helper_private;
635 /* forced on connector */
636 struct drm_cmdline_mode cmdline_mode;
637 enum drm_connector_force force;
639 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
640 struct drm_encoder *encoder; /* currently active encoder */
643 uint8_t eld[MAX_ELD_BYTES];
645 int max_tmds_clock; /* in MHz */
646 bool latency_present[2];
647 int video_latency[2]; /* [0]: progressive, [1]: interlaced */
648 int audio_latency[2];
649 int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
650 unsigned bad_edid_counter;
652 struct dentry *debugfs_entry;
654 struct drm_connector_state *state;
658 * struct drm_plane_state - mutable plane state
659 * @crtc: currently bound CRTC, NULL if disabled
660 * @fb: currently bound framebuffer
661 * @crtc_x: left position of visible portion of plane on crtc
662 * @crtc_y: upper position of visible portion of plane on crtc
663 * @crtc_w: width of visible portion of plane on crtc
664 * @crtc_h: height of visible portion of plane on crtc
665 * @src_x: left position of visible portion of plane within
667 * @src_y: upper position of visible portion of plane within
669 * @src_w: width of visible portion of plane (in 16.16)
670 * @src_h: height of visible portion of plane (in 16.16)
671 * @state: backpointer to global drm_atomic_state
673 struct drm_plane_state {
674 struct drm_crtc *crtc;
675 struct drm_framebuffer *fb;
677 /* Signed dest location allows it to be partially off screen */
678 int32_t crtc_x, crtc_y;
679 uint32_t crtc_w, crtc_h;
681 /* Source values are 16.16 fixed point */
682 uint32_t src_x, src_y;
683 uint32_t src_h, src_w;
685 struct drm_atomic_state *state;
690 * struct drm_plane_funcs - driver plane control functions
691 * @update_plane: update the plane configuration
692 * @disable_plane: shut down the plane
693 * @destroy: clean up plane resources
694 * @reset: reset plane after state has been invalidated (e.g. resume)
695 * @set_property: called when a property is changed
696 * @atomic_duplicate_state: duplicate the atomic state for this plane
697 * @atomic_destroy_state: destroy an atomic state for this plane
698 * @atomic_set_property: set a property on an atomic state for this plane
700 struct drm_plane_funcs {
701 int (*update_plane)(struct drm_plane *plane,
702 struct drm_crtc *crtc, struct drm_framebuffer *fb,
703 int crtc_x, int crtc_y,
704 unsigned int crtc_w, unsigned int crtc_h,
705 uint32_t src_x, uint32_t src_y,
706 uint32_t src_w, uint32_t src_h);
707 int (*disable_plane)(struct drm_plane *plane);
708 void (*destroy)(struct drm_plane *plane);
709 void (*reset)(struct drm_plane *plane);
711 int (*set_property)(struct drm_plane *plane,
712 struct drm_property *property, uint64_t val);
714 /* atomic update handling */
715 struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
716 void (*atomic_destroy_state)(struct drm_plane *plane,
717 struct drm_plane_state *state);
718 int (*atomic_set_property)(struct drm_plane *plane,
719 struct drm_plane_state *state,
720 struct drm_property *property,
724 enum drm_plane_type {
725 DRM_PLANE_TYPE_OVERLAY,
726 DRM_PLANE_TYPE_PRIMARY,
727 DRM_PLANE_TYPE_CURSOR,
731 * struct drm_plane - central DRM plane control structure
732 * @dev: DRM device this plane belongs to
733 * @head: for list management
734 * @base: base mode object
735 * @possible_crtcs: pipes this plane can be bound to
736 * @format_types: array of formats supported by this plane
737 * @format_count: number of formats supported
738 * @crtc: currently bound CRTC
739 * @fb: currently bound fb
740 * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
741 * drm_mode_set_config_internal() to implement correct refcounting.
742 * @funcs: helper functions
743 * @properties: property tracking for this plane
744 * @type: type of plane (overlay, primary, cursor)
745 * @state: current atomic state for this plane
748 struct drm_device *dev;
749 struct list_head head;
751 struct drm_mode_object base;
753 uint32_t possible_crtcs;
754 uint32_t *format_types;
755 uint32_t format_count;
757 struct drm_crtc *crtc;
758 struct drm_framebuffer *fb;
760 struct drm_framebuffer *old_fb;
762 const struct drm_plane_funcs *funcs;
764 struct drm_object_properties properties;
766 enum drm_plane_type type;
768 void *helper_private;
770 struct drm_plane_state *state;
774 * struct drm_bridge_funcs - drm_bridge control functions
775 * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
776 * @disable: Called right before encoder prepare, disables the bridge
777 * @post_disable: Called right after encoder prepare, for lockstepped disable
778 * @mode_set: Set this mode to the bridge
779 * @pre_enable: Called right before encoder commit, for lockstepped commit
780 * @enable: Called right after encoder commit, enables the bridge
781 * @destroy: make object go away
783 struct drm_bridge_funcs {
784 bool (*mode_fixup)(struct drm_bridge *bridge,
785 const struct drm_display_mode *mode,
786 struct drm_display_mode *adjusted_mode);
787 void (*disable)(struct drm_bridge *bridge);
788 void (*post_disable)(struct drm_bridge *bridge);
789 void (*mode_set)(struct drm_bridge *bridge,
790 struct drm_display_mode *mode,
791 struct drm_display_mode *adjusted_mode);
792 void (*pre_enable)(struct drm_bridge *bridge);
793 void (*enable)(struct drm_bridge *bridge);
794 void (*destroy)(struct drm_bridge *bridge);
798 * struct drm_bridge - central DRM bridge control structure
799 * @dev: DRM device this bridge belongs to
800 * @head: list management
801 * @base: base mode object
802 * @funcs: control functions
803 * @driver_private: pointer to the bridge driver's internal context
806 struct drm_device *dev;
807 struct list_head head;
809 struct drm_mode_object base;
811 const struct drm_bridge_funcs *funcs;
812 void *driver_private;
816 * struct struct drm_atomic_state - the global state object for atomic updates
817 * @dev: parent DRM device
818 * @flags: state flags like async update
819 * @planes: pointer to array of plane pointers
820 * @plane_states: pointer to array of plane states pointers
821 * @crtcs: pointer to array of CRTC pointers
822 * @crtc_states: pointer to array of CRTC states pointers
823 * @connectors: pointer to array of connector pointers
824 * @connector_states: pointer to array of connector states pointers
825 * @acquire_ctx: acquire context for this atomic modeset state update
827 struct drm_atomic_state {
828 struct drm_device *dev;
830 struct drm_plane **planes;
831 struct drm_plane_state **plane_states;
832 struct drm_crtc **crtcs;
833 struct drm_crtc_state **crtc_states;
834 struct drm_connector **connectors;
835 struct drm_connector_state **connector_states;
837 struct drm_modeset_acquire_ctx *acquire_ctx;
842 * struct drm_mode_set - new values for a CRTC config change
843 * @fb: framebuffer to use for new config
844 * @crtc: CRTC whose configuration we're about to change
845 * @mode: mode timings to use
846 * @x: position of this CRTC relative to @fb
847 * @y: position of this CRTC relative to @fb
848 * @connectors: array of connectors to drive with this CRTC if possible
849 * @num_connectors: size of @connectors array
851 * Represents a single crtc the connectors that it drives with what mode
852 * and from which framebuffer it scans out from.
854 * This is used to set modes.
856 struct drm_mode_set {
857 struct drm_framebuffer *fb;
858 struct drm_crtc *crtc;
859 struct drm_display_mode *mode;
864 struct drm_connector **connectors;
865 size_t num_connectors;
869 * struct drm_mode_config_funcs - basic driver provided mode setting functions
870 * @fb_create: create a new framebuffer object
871 * @output_poll_changed: function to handle output configuration changes
872 * @atomic_check: check whether a give atomic state update is possible
873 * @atomic_commit: commit an atomic state update previously verified with
876 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
879 struct drm_mode_config_funcs {
880 struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
881 struct drm_file *file_priv,
882 struct drm_mode_fb_cmd2 *mode_cmd);
883 void (*output_poll_changed)(struct drm_device *dev);
885 int (*atomic_check)(struct drm_device *dev,
886 struct drm_atomic_state *a);
887 int (*atomic_commit)(struct drm_device *dev,
888 struct drm_atomic_state *a,
893 * struct drm_mode_group - group of mode setting resources for potential sub-grouping
894 * @num_crtcs: CRTC count
895 * @num_encoders: encoder count
896 * @num_connectors: connector count
897 * @num_bridges: bridge count
898 * @id_list: list of KMS object IDs in this group
900 * Currently this simply tracks the global mode setting state. But in the
901 * future it could allow groups of objects to be set aside into independent
902 * control groups for use by different user level processes (e.g. two X servers
903 * running simultaneously on different heads, each with their own mode
904 * configuration and freedom of mode setting).
906 struct drm_mode_group {
908 uint32_t num_encoders;
909 uint32_t num_connectors;
910 uint32_t num_bridges;
912 /* list of object IDs for this group */
917 * struct drm_mode_config - Mode configuration control structure
918 * @mutex: mutex protecting KMS related lists and structures
919 * @connection_mutex: ww mutex protecting connector state and routing
920 * @acquire_ctx: global implicit acquire context used by atomic drivers for
922 * @idr_mutex: mutex for KMS ID allocation and management
923 * @crtc_idr: main KMS ID tracking object
924 * @fb_lock: mutex to protect fb state and lists
925 * @num_fb: number of fbs available
926 * @fb_list: list of framebuffers available
927 * @num_connector: number of connectors on this device
928 * @connector_list: list of connector objects
929 * @num_bridge: number of bridges on this device
930 * @bridge_list: list of bridge objects
931 * @num_encoder: number of encoders on this device
932 * @encoder_list: list of encoder objects
933 * @num_overlay_plane: number of overlay planes on this device
934 * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
935 * @plane_list: list of plane objects
936 * @num_crtc: number of CRTCs on this device
937 * @crtc_list: list of CRTC objects
938 * @property_list: list of property objects
939 * @min_width: minimum pixel width on this device
940 * @min_height: minimum pixel height on this device
941 * @max_width: maximum pixel width on this device
942 * @max_height: maximum pixel height on this device
943 * @funcs: core driver provided mode setting functions
944 * @fb_base: base address of the framebuffer
945 * @poll_enabled: track polling support for this device
946 * @poll_running: track polling status for this device
947 * @output_poll_work: delayed work for polling in process context
948 * @property_blob_list: list of all the blob property objects
949 * @*_property: core property tracking
950 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
951 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
952 * @async_page_flip: does this device support async flips on the primary plane?
953 * @cursor_width: hint to userspace for max cursor width
954 * @cursor_height: hint to userspace for max cursor height
956 * Core mode resource tracking structure. All CRTC, encoders, and connectors
957 * enumerated by the driver are added here, as are global properties. Some
958 * global restrictions are also here, e.g. dimension restrictions.
960 struct drm_mode_config {
961 struct mutex mutex; /* protects configuration (mode lists etc.) */
962 struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
963 struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
964 struct mutex idr_mutex; /* for IDR management */
965 struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
966 /* this is limited to one for now */
968 struct mutex fb_lock; /* proctects global and per-file fb lists */
970 struct list_head fb_list;
973 struct list_head connector_list;
975 struct list_head bridge_list;
977 struct list_head encoder_list;
980 * Track # of overlay planes separately from # of total planes. By
981 * default we only advertise overlay planes to userspace; if userspace
982 * sets the "universal plane" capability bit, we'll go ahead and
985 int num_overlay_plane;
987 struct list_head plane_list;
990 struct list_head crtc_list;
992 struct list_head property_list;
994 int min_width, min_height;
995 int max_width, max_height;
996 const struct drm_mode_config_funcs *funcs;
997 resource_size_t fb_base;
999 /* output poll support */
1002 struct delayed_work output_poll_work;
1004 /* pointers to standard properties */
1005 struct list_head property_blob_list;
1006 struct drm_property *edid_property;
1007 struct drm_property *dpms_property;
1008 struct drm_property *path_property;
1009 struct drm_property *plane_type_property;
1010 struct drm_property *rotation_property;
1012 /* DVI-I properties */
1013 struct drm_property *dvi_i_subconnector_property;
1014 struct drm_property *dvi_i_select_subconnector_property;
1017 struct drm_property *tv_subconnector_property;
1018 struct drm_property *tv_select_subconnector_property;
1019 struct drm_property *tv_mode_property;
1020 struct drm_property *tv_left_margin_property;
1021 struct drm_property *tv_right_margin_property;
1022 struct drm_property *tv_top_margin_property;
1023 struct drm_property *tv_bottom_margin_property;
1024 struct drm_property *tv_brightness_property;
1025 struct drm_property *tv_contrast_property;
1026 struct drm_property *tv_flicker_reduction_property;
1027 struct drm_property *tv_overscan_property;
1028 struct drm_property *tv_saturation_property;
1029 struct drm_property *tv_hue_property;
1031 /* Optional properties */
1032 struct drm_property *scaling_mode_property;
1033 struct drm_property *aspect_ratio_property;
1034 struct drm_property *dirty_info_property;
1036 /* dumb ioctl parameters */
1037 uint32_t preferred_depth, prefer_shadow;
1039 /* whether async page flip is supported or not */
1040 bool async_page_flip;
1043 uint32_t cursor_width, cursor_height;
1046 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
1047 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
1048 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
1049 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
1050 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
1051 #define obj_to_property(x) container_of(x, struct drm_property, base)
1052 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
1053 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
1055 struct drm_prop_enum_list {
1060 extern int drm_crtc_init_with_planes(struct drm_device *dev,
1061 struct drm_crtc *crtc,
1062 struct drm_plane *primary,
1063 struct drm_plane *cursor,
1064 const struct drm_crtc_funcs *funcs);
1065 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
1066 extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
1069 * drm_crtc_mask - find the mask of a registered CRTC
1070 * @crtc: CRTC to find mask for
1072 * Given a registered CRTC, return the mask bit of that CRTC for an
1073 * encoder's possible_crtcs field.
1075 static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
1077 return 1 << drm_crtc_index(crtc);
1080 extern void drm_connector_ida_init(void);
1081 extern void drm_connector_ida_destroy(void);
1082 extern int drm_connector_init(struct drm_device *dev,
1083 struct drm_connector *connector,
1084 const struct drm_connector_funcs *funcs,
1085 int connector_type);
1086 int drm_connector_register(struct drm_connector *connector);
1087 void drm_connector_unregister(struct drm_connector *connector);
1089 extern void drm_connector_cleanup(struct drm_connector *connector);
1090 extern unsigned int drm_connector_index(struct drm_connector *connector);
1091 /* helper to unplug all connectors from sysfs for device */
1092 extern void drm_connector_unplug_all(struct drm_device *dev);
1094 extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1095 const struct drm_bridge_funcs *funcs);
1096 extern void drm_bridge_cleanup(struct drm_bridge *bridge);
1098 extern int drm_encoder_init(struct drm_device *dev,
1099 struct drm_encoder *encoder,
1100 const struct drm_encoder_funcs *funcs,
1104 * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
1105 * @encoder: encoder to test
1106 * @crtc: crtc to test
1108 * Return false if @encoder can't be driven by @crtc, true otherwise.
1110 static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
1111 struct drm_crtc *crtc)
1113 return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
1116 extern int drm_universal_plane_init(struct drm_device *dev,
1117 struct drm_plane *plane,
1118 unsigned long possible_crtcs,
1119 const struct drm_plane_funcs *funcs,
1120 const uint32_t *formats,
1121 uint32_t format_count,
1122 enum drm_plane_type type);
1123 extern int drm_plane_init(struct drm_device *dev,
1124 struct drm_plane *plane,
1125 unsigned long possible_crtcs,
1126 const struct drm_plane_funcs *funcs,
1127 const uint32_t *formats, uint32_t format_count,
1129 extern void drm_plane_cleanup(struct drm_plane *plane);
1130 extern unsigned int drm_plane_index(struct drm_plane *plane);
1131 extern void drm_plane_force_disable(struct drm_plane *plane);
1132 extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
1134 const struct drm_display_mode *mode,
1135 const struct drm_framebuffer *fb);
1137 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
1139 extern const char *drm_get_connector_status_name(enum drm_connector_status status);
1140 extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
1141 extern const char *drm_get_dpms_name(int val);
1142 extern const char *drm_get_dvi_i_subconnector_name(int val);
1143 extern const char *drm_get_dvi_i_select_name(int val);
1144 extern const char *drm_get_tv_subconnector_name(int val);
1145 extern const char *drm_get_tv_select_name(int val);
1146 extern void drm_fb_release(struct drm_file *file_priv);
1147 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
1148 extern void drm_mode_group_destroy(struct drm_mode_group *group);
1149 extern void drm_reinit_primary_mode_group(struct drm_device *dev);
1150 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
1151 extern struct edid *drm_get_edid(struct drm_connector *connector,
1152 struct i2c_adapter *adapter);
1153 extern struct edid *drm_edid_duplicate(const struct edid *edid);
1154 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
1155 extern void drm_mode_config_init(struct drm_device *dev);
1156 extern void drm_mode_config_reset(struct drm_device *dev);
1157 extern void drm_mode_config_cleanup(struct drm_device *dev);
1159 extern int drm_mode_connector_set_path_property(struct drm_connector *connector,
1161 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
1164 static inline bool drm_property_type_is(struct drm_property *property,
1167 /* instanceof for props.. handles extended type vs original types: */
1168 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
1169 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
1170 return property->flags & type;
1173 static inline bool drm_property_type_valid(struct drm_property *property)
1175 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
1176 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
1177 return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
1180 extern int drm_object_property_set_value(struct drm_mode_object *obj,
1181 struct drm_property *property,
1183 extern int drm_object_property_get_value(struct drm_mode_object *obj,
1184 struct drm_property *property,
1186 extern int drm_framebuffer_init(struct drm_device *dev,
1187 struct drm_framebuffer *fb,
1188 const struct drm_framebuffer_funcs *funcs);
1189 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
1191 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
1192 extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
1193 extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
1194 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
1195 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
1197 extern void drm_object_attach_property(struct drm_mode_object *obj,
1198 struct drm_property *property,
1200 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1201 const char *name, int num_values);
1202 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
1204 const struct drm_prop_enum_list *props,
1206 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
1207 int flags, const char *name,
1208 const struct drm_prop_enum_list *props,
1210 uint64_t supported_bits);
1211 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
1213 uint64_t min, uint64_t max);
1214 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
1215 int flags, const char *name,
1216 int64_t min, int64_t max);
1217 struct drm_property *drm_property_create_object(struct drm_device *dev,
1218 int flags, const char *name, uint32_t type);
1219 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
1220 extern int drm_property_add_enum(struct drm_property *property, int index,
1221 uint64_t value, const char *name);
1222 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
1223 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
1225 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
1226 extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
1227 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
1229 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
1230 struct drm_encoder *encoder);
1231 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
1233 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
1234 uint32_t id, uint32_t type);
1237 extern int drm_mode_getresources(struct drm_device *dev,
1238 void *data, struct drm_file *file_priv);
1239 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
1240 struct drm_file *file_priv);
1241 extern int drm_mode_getcrtc(struct drm_device *dev,
1242 void *data, struct drm_file *file_priv);
1243 extern int drm_mode_getconnector(struct drm_device *dev,
1244 void *data, struct drm_file *file_priv);
1245 extern int drm_mode_set_config_internal(struct drm_mode_set *set);
1246 extern int drm_mode_setcrtc(struct drm_device *dev,
1247 void *data, struct drm_file *file_priv);
1248 extern int drm_mode_getplane(struct drm_device *dev,
1249 void *data, struct drm_file *file_priv);
1250 extern int drm_mode_setplane(struct drm_device *dev,
1251 void *data, struct drm_file *file_priv);
1252 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
1253 void *data, struct drm_file *file_priv);
1254 extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
1255 void *data, struct drm_file *file_priv);
1256 extern int drm_mode_addfb(struct drm_device *dev,
1257 void *data, struct drm_file *file_priv);
1258 extern int drm_mode_addfb2(struct drm_device *dev,
1259 void *data, struct drm_file *file_priv);
1260 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
1261 extern int drm_mode_rmfb(struct drm_device *dev,
1262 void *data, struct drm_file *file_priv);
1263 extern int drm_mode_getfb(struct drm_device *dev,
1264 void *data, struct drm_file *file_priv);
1265 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1266 void *data, struct drm_file *file_priv);
1268 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
1269 void *data, struct drm_file *file_priv);
1270 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
1271 void *data, struct drm_file *file_priv);
1272 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
1273 void *data, struct drm_file *file_priv);
1274 extern int drm_mode_getencoder(struct drm_device *dev,
1275 void *data, struct drm_file *file_priv);
1276 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
1277 void *data, struct drm_file *file_priv);
1278 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
1279 void *data, struct drm_file *file_priv);
1280 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
1281 extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
1282 extern bool drm_detect_hdmi_monitor(struct edid *edid);
1283 extern bool drm_detect_monitor_audio(struct edid *edid);
1284 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
1285 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
1286 void *data, struct drm_file *file_priv);
1287 extern int drm_add_modes_noedid(struct drm_connector *connector,
1288 int hdisplay, int vdisplay);
1289 extern void drm_set_preferred_mode(struct drm_connector *connector,
1290 int hpref, int vpref);
1292 extern int drm_edid_header_is_valid(const u8 *raw_edid);
1293 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
1294 extern bool drm_edid_is_valid(struct edid *edid);
1295 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1296 int hsize, int vsize, int fresh,
1299 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1300 void *data, struct drm_file *file_priv);
1301 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1302 void *data, struct drm_file *file_priv);
1303 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1304 void *data, struct drm_file *file_priv);
1305 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
1306 struct drm_file *file_priv);
1307 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
1308 struct drm_file *file_priv);
1309 extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
1310 struct drm_property *property,
1313 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1315 extern int drm_format_num_planes(uint32_t format);
1316 extern int drm_format_plane_cpp(uint32_t format, int plane);
1317 extern int drm_format_horz_chroma_subsampling(uint32_t format);
1318 extern int drm_format_vert_chroma_subsampling(uint32_t format);
1319 extern const char *drm_get_format_name(uint32_t format);
1320 extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
1321 unsigned int supported_rotations);
1322 extern unsigned int drm_rotation_simplify(unsigned int rotation,
1323 unsigned int supported_rotations);
1327 static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
1330 struct drm_mode_object *mo;
1331 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
1332 return mo ? obj_to_plane(mo) : NULL;
1335 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
1338 struct drm_mode_object *mo;
1339 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC);
1340 return mo ? obj_to_crtc(mo) : NULL;
1343 static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
1346 struct drm_mode_object *mo;
1347 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
1348 return mo ? obj_to_encoder(mo) : NULL;
1351 static inline struct drm_connector *drm_connector_find(struct drm_device *dev,
1354 struct drm_mode_object *mo;
1355 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
1356 return mo ? obj_to_connector(mo) : NULL;
1359 static inline struct drm_property *drm_property_find(struct drm_device *dev,
1362 struct drm_mode_object *mo;
1363 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
1364 return mo ? obj_to_property(mo) : NULL;
1367 static inline struct drm_property_blob *
1368 drm_property_blob_find(struct drm_device *dev, uint32_t id)
1370 struct drm_mode_object *mo;
1371 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
1372 return mo ? obj_to_blob(mo) : NULL;
1375 /* Plane list iterator for legacy (overlay only) planes. */
1376 #define drm_for_each_legacy_plane(plane, planelist) \
1377 list_for_each_entry(plane, planelist, head) \
1378 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1380 #endif /* __DRM_CRTC_H__ */