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 <linux/media-bus-format.h>
35 #include <uapi/drm/drm_mode.h>
36 #include <uapi/drm/drm_fourcc.h>
37 #include <drm/drm_modeset_lock.h>
41 struct drm_framebuffer
;
42 struct drm_object_properties
;
48 struct drm_mode_object
{
51 struct drm_object_properties
*properties
;
53 void (*free_cb
)(struct kref
*kref
);
56 #define DRM_OBJECT_MAX_PROPERTY 24
57 struct drm_object_properties
{
58 int count
, atomic_count
;
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:
64 struct drm_property
*properties
[DRM_OBJECT_MAX_PROPERTY
];
65 /* do not read/write values directly, but use drm_object_property_get_value()
66 * and drm_object_property_set_value():
68 uint64_t values
[DRM_OBJECT_MAX_PROPERTY
];
71 static inline int64_t U642I64(uint64_t val
)
73 return (int64_t)*((int64_t *)&val
);
75 static inline uint64_t I642U64(int64_t val
)
77 return (uint64_t)*((uint64_t *)&val
);
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
85 #define DRM_ROTATE_MASK 0x0f
86 #define DRM_ROTATE_0 0
87 #define DRM_ROTATE_90 1
88 #define DRM_ROTATE_180 2
89 #define DRM_ROTATE_270 3
90 #define DRM_REFLECT_MASK (~DRM_ROTATE_MASK)
91 #define DRM_REFLECT_X 4
92 #define DRM_REFLECT_Y 5
94 enum drm_connector_force
{
95 DRM_FORCE_UNSPECIFIED
,
97 DRM_FORCE_ON
, /* force on analog part normally */
98 DRM_FORCE_ON_DIGITAL
, /* for DVI-I use digital connector */
101 #include <drm/drm_modes.h>
103 enum drm_connector_status
{
104 connector_status_connected
= 1,
105 connector_status_disconnected
= 2,
106 connector_status_unknown
= 3,
109 enum subpixel_order
{
111 SubPixelHorizontalRGB
,
112 SubPixelHorizontalBGR
,
118 #define DRM_COLOR_FORMAT_RGB444 (1<<0)
119 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1)
120 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2)
122 * Describes a given display (e.g. CRT or flat panel) and its limitations.
124 struct drm_display_info
{
125 char name
[DRM_DISPLAY_INFO_LEN
];
128 unsigned int width_mm
;
129 unsigned int height_mm
;
131 /* Clock limits FIXME: storage format */
132 unsigned int min_vfreq
, max_vfreq
;
133 unsigned int min_hfreq
, max_hfreq
;
134 unsigned int pixel_clock
;
137 enum subpixel_order subpixel_order
;
140 const u32
*bus_formats
;
141 unsigned int num_bus_formats
;
143 /* Mask of supported hdmi deep color modes */
144 u8 edid_hdmi_dc_modes
;
149 /* data corresponds to displayid vend/prod/serial */
150 struct drm_tile_group
{
151 struct kref refcount
;
152 struct drm_device
*dev
;
158 * struct drm_framebuffer_funcs - framebuffer hooks
160 struct drm_framebuffer_funcs
{
164 * Clean up framebuffer resources, specifically also unreference the
165 * backing storage. The core guarantees to call this function for every
166 * framebuffer successfully created by ->fb_create() in
167 * &drm_mode_config_funcs. Drivers must also call
168 * drm_framebuffer_cleanup() to release DRM core resources for this
171 void (*destroy
)(struct drm_framebuffer
*framebuffer
);
176 * Create a buffer handle in the driver-specific buffer manager (either
177 * GEM or TTM) valid for the passed-in struct &drm_file. This is used by
178 * the core to implement the GETFB IOCTL, which returns (for
179 * sufficiently priviledged user) also a native buffer handle. This can
180 * be used for seamless transitions between modesetting clients by
181 * copying the current screen contents to a private buffer and blending
182 * between that and the new contents.
184 * GEM based drivers should call drm_gem_handle_create() to create the
189 * 0 on success or a negative error code on failure.
191 int (*create_handle
)(struct drm_framebuffer
*fb
,
192 struct drm_file
*file_priv
,
193 unsigned int *handle
);
197 * Optional callback for the dirty fb IOCTL.
199 * Userspace can notify the driver via this callback that an area of the
200 * framebuffer has changed and should be flushed to the display
201 * hardware. This can also be used internally, e.g. by the fbdev
202 * emulation, though that's not the case currently.
204 * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
205 * for more information as all the semantics and arguments have a one to
206 * one mapping on this function.
210 * 0 on success or a negative error code on failure.
212 int (*dirty
)(struct drm_framebuffer
*framebuffer
,
213 struct drm_file
*file_priv
, unsigned flags
,
214 unsigned color
, struct drm_clip_rect
*clips
,
218 struct drm_framebuffer
{
219 struct drm_device
*dev
;
221 * Note that the fb is refcounted for the benefit of driver internals,
222 * for example some hw, disabling a CRTC/plane is asynchronous, and
223 * scanout does not actually complete until the next vblank. So some
224 * cleanup (like releasing the reference(s) on the backing GEM bo(s))
225 * should be deferred. In cases like this, the driver would like to
226 * hold a ref to the fb even though it has already been removed from
227 * userspace perspective.
228 * The refcount is stored inside the mode object.
231 * Place on the dev->mode_config.fb_list, access protected by
232 * dev->mode_config.fb_lock.
234 struct list_head head
;
235 struct drm_mode_object base
;
236 const struct drm_framebuffer_funcs
*funcs
;
237 unsigned int pitches
[4];
238 unsigned int offsets
[4];
239 uint64_t modifier
[4];
242 /* depth can be 15 or 16 */
246 uint32_t pixel_format
; /* fourcc format */
247 struct list_head filp_head
;
250 struct drm_property_blob
{
251 struct drm_mode_object base
;
252 struct drm_device
*dev
;
253 struct list_head head_global
;
254 struct list_head head_file
;
256 unsigned char data
[];
259 struct drm_property_enum
{
261 struct list_head head
;
262 char name
[DRM_PROP_NAME_LEN
];
265 struct drm_property
{
266 struct list_head head
;
267 struct drm_mode_object base
;
269 char name
[DRM_PROP_NAME_LEN
];
272 struct drm_device
*dev
;
274 struct list_head enum_list
;
278 struct drm_connector
;
280 struct drm_pending_vblank_event
;
283 struct drm_atomic_state
;
285 struct drm_crtc_helper_funcs
;
286 struct drm_encoder_helper_funcs
;
287 struct drm_connector_helper_funcs
;
288 struct drm_plane_helper_funcs
;
291 * struct drm_crtc_state - mutable CRTC state
292 * @crtc: backpointer to the CRTC
293 * @enable: whether the CRTC should be enabled, gates all other state
294 * @active: whether the CRTC is actively displaying (used for DPMS)
295 * @planes_changed: planes on this crtc are updated
296 * @mode_changed: crtc_state->mode or crtc_state->enable has been changed
297 * @active_changed: crtc_state->active has been toggled.
298 * @connectors_changed: connectors to this crtc have been updated
299 * @color_mgmt_changed: color management properties have changed (degamma or
300 * gamma LUT or CSC matrix)
301 * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes
302 * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors
303 * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached encoders
304 * @last_vblank_count: for helpers and drivers to capture the vblank of the
305 * update to ensure framebuffer cleanup isn't done too early
306 * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
307 * @mode: current mode timings
308 * @degamma_lut: Lookup table for converting framebuffer pixel data
309 * before apply the conversion matrix
310 * @ctm: Transformation matrix
311 * @gamma_lut: Lookup table for converting pixel data after the
313 * @event: optional pointer to a DRM event to signal upon completion of the
315 * @state: backpointer to global drm_atomic_state
317 * Note that the distinction between @enable and @active is rather subtile:
318 * Flipping @active while @enable is set without changing anything else may
319 * never return in a failure from the ->atomic_check callback. Userspace assumes
320 * that a DPMS On will always succeed. In other words: @enable controls resource
321 * assignment, @active controls the actual hardware state.
323 struct drm_crtc_state
{
324 struct drm_crtc
*crtc
;
329 /* computed state bits used by helpers and drivers */
330 bool planes_changed
: 1;
331 bool mode_changed
: 1;
332 bool active_changed
: 1;
333 bool connectors_changed
: 1;
334 bool color_mgmt_changed
: 1;
336 /* attached planes bitmask:
337 * WARNING: transitional helpers do not maintain plane_mask so
338 * drivers not converted over to atomic helpers should not rely
339 * on plane_mask being accurate!
346 /* last_vblank_count: for vblank waits before cleanup */
347 u32 last_vblank_count
;
349 /* adjusted_mode: for use by helpers and drivers */
350 struct drm_display_mode adjusted_mode
;
352 struct drm_display_mode mode
;
354 /* blob property to expose current mode to atomic userspace */
355 struct drm_property_blob
*mode_blob
;
357 /* blob property to expose color management to userspace */
358 struct drm_property_blob
*degamma_lut
;
359 struct drm_property_blob
*ctm
;
360 struct drm_property_blob
*gamma_lut
;
362 struct drm_pending_vblank_event
*event
;
364 struct drm_atomic_state
*state
;
368 * struct drm_crtc_funcs - control CRTCs for a given device
370 * The drm_crtc_funcs structure is the central CRTC management structure
371 * in the DRM. Each CRTC controls one or more connectors (note that the name
372 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
373 * connectors, not just CRTs).
375 * Each driver is responsible for filling out this structure at startup time,
376 * in addition to providing other modesetting features, like i2c and DDC
379 struct drm_crtc_funcs
{
383 * Reset CRTC hardware and software state to off. This function isn't
384 * called by the core directly, only through drm_mode_config_reset().
385 * It's not a helper hook only for historical reasons.
387 * Atomic drivers can use drm_atomic_helper_crtc_reset() to reset
388 * atomic state using this hook.
390 void (*reset
)(struct drm_crtc
*crtc
);
395 * Update the cursor image. The cursor position is relative to the CRTC
396 * and can be partially or fully outside of the visible area.
398 * Note that contrary to all other KMS functions the legacy cursor entry
399 * points don't take a framebuffer object, but instead take directly a
400 * raw buffer object id from the driver's buffer manager (which is
401 * either GEM or TTM for current drivers).
403 * This entry point is deprecated, drivers should instead implement
404 * universal plane support and register a proper cursor plane using
405 * drm_crtc_init_with_planes().
407 * This callback is optional
411 * 0 on success or a negative error code on failure.
413 int (*cursor_set
)(struct drm_crtc
*crtc
, struct drm_file
*file_priv
,
414 uint32_t handle
, uint32_t width
, uint32_t height
);
419 * Update the cursor image, including hotspot information. The hotspot
420 * must not affect the cursor position in CRTC coordinates, but is only
421 * meant as a hint for virtualized display hardware to coordinate the
422 * guests and hosts cursor position. The cursor hotspot is relative to
423 * the cursor image. Otherwise this works exactly like @cursor_set.
425 * This entry point is deprecated, drivers should instead implement
426 * universal plane support and register a proper cursor plane using
427 * drm_crtc_init_with_planes().
429 * This callback is optional.
433 * 0 on success or a negative error code on failure.
435 int (*cursor_set2
)(struct drm_crtc
*crtc
, struct drm_file
*file_priv
,
436 uint32_t handle
, uint32_t width
, uint32_t height
,
437 int32_t hot_x
, int32_t hot_y
);
442 * Update the cursor position. The cursor does not need to be visible
443 * when this hook is called.
445 * This entry point is deprecated, drivers should instead implement
446 * universal plane support and register a proper cursor plane using
447 * drm_crtc_init_with_planes().
449 * This callback is optional.
453 * 0 on success or a negative error code on failure.
455 int (*cursor_move
)(struct drm_crtc
*crtc
, int x
, int y
);
460 * Set gamma on the CRTC.
462 * This callback is optional.
466 * Drivers that support gamma tables and also fbdev emulation through
467 * the provided helper library need to take care to fill out the gamma
468 * hooks for both. Currently there's a bit an unfortunate duplication
469 * going on, which should eventually be unified to just one set of
472 void (*gamma_set
)(struct drm_crtc
*crtc
, u16
*r
, u16
*g
, u16
*b
,
473 uint32_t start
, uint32_t size
);
478 * Clean up plane resources. This is only called at driver unload time
479 * through drm_mode_config_cleanup() since a CRTC cannot be hotplugged
482 void (*destroy
)(struct drm_crtc
*crtc
);
487 * This is the main legacy entry point to change the modeset state on a
488 * CRTC. All the details of the desired configuration are passed in a
489 * struct &drm_mode_set - see there for details.
491 * Drivers implementing atomic modeset should use
492 * drm_atomic_helper_set_config() to implement this hook.
496 * 0 on success or a negative error code on failure.
498 int (*set_config
)(struct drm_mode_set
*set
);
503 * Legacy entry point to schedule a flip to the given framebuffer.
505 * Page flipping is a synchronization mechanism that replaces the frame
506 * buffer being scanned out by the CRTC with a new frame buffer during
507 * vertical blanking, avoiding tearing (except when requested otherwise
508 * through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application
509 * requests a page flip the DRM core verifies that the new frame buffer
510 * is large enough to be scanned out by the CRTC in the currently
511 * configured mode and then calls the CRTC ->page_flip() operation with a
512 * pointer to the new frame buffer.
514 * The driver must wait for any pending rendering to the new framebuffer
515 * to complete before executing the flip. It should also wait for any
516 * pending rendering from other drivers if the underlying buffer is a
519 * An application can request to be notified when the page flip has
520 * completed. The drm core will supply a struct &drm_event in the event
521 * parameter in this case. This can be handled by the
522 * drm_crtc_send_vblank_event() function, which the driver should call on
523 * the provided event upon completion of the flip. Note that if
524 * the driver supports vblank signalling and timestamping the vblank
525 * counters and timestamps must agree with the ones returned from page
526 * flip events. With the current vblank helper infrastructure this can
527 * be achieved by holding a vblank reference while the page flip is
528 * pending, acquired through drm_crtc_vblank_get() and released with
529 * drm_crtc_vblank_put(). Drivers are free to implement their own vblank
530 * counter and timestamp tracking though, e.g. if they have accurate
531 * timestamp registers in hardware.
535 * Up to that point drivers need to manage events themselves and can use
536 * even->base.list freely for that. Specifically they need to ensure
537 * that they don't send out page flip (or vblank) events for which the
538 * corresponding drm file has been closed already. The drm core
539 * unfortunately does not (yet) take care of that. Therefore drivers
540 * currently must clean up and release pending events in their
541 * ->preclose driver function.
543 * This callback is optional.
547 * Very early versions of the KMS ABI mandated that the driver must
548 * block (but not reject) any rendering to the old framebuffer until the
549 * flip operation has completed and the old framebuffer is no longer
550 * visible. This requirement has been lifted, and userspace is instead
551 * expected to request delivery of an event and wait with recycling old
552 * buffers until such has been received.
556 * 0 on success or a negative error code on failure. Note that if a
557 * ->page_flip() operation is already pending the callback should return
558 * -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode
559 * or just runtime disabled through DPMS respectively the new atomic
560 * "ACTIVE" state) should result in an -EINVAL error code. Note that
561 * drm_atomic_helper_page_flip() checks this already for atomic drivers.
563 int (*page_flip
)(struct drm_crtc
*crtc
,
564 struct drm_framebuffer
*fb
,
565 struct drm_pending_vblank_event
*event
,
571 * This is the legacy entry point to update a property attached to the
574 * Drivers implementing atomic modeset should use
575 * drm_atomic_helper_crtc_set_property() to implement this hook.
577 * This callback is optional if the driver does not support any legacy
578 * driver-private properties.
582 * 0 on success or a negative error code on failure.
584 int (*set_property
)(struct drm_crtc
*crtc
,
585 struct drm_property
*property
, uint64_t val
);
588 * @atomic_duplicate_state:
590 * Duplicate the current atomic state for this CRTC and return it.
591 * The core and helpers gurantee that any atomic state duplicated with
592 * this hook and still owned by the caller (i.e. not transferred to the
593 * driver by calling ->atomic_commit() from struct
594 * &drm_mode_config_funcs) will be cleaned up by calling the
595 * @atomic_destroy_state hook in this structure.
597 * Atomic drivers which don't subclass struct &drm_crtc should use
598 * drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the
599 * state structure to extend it with driver-private state should use
600 * __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is
601 * duplicated in a consistent fashion across drivers.
603 * It is an error to call this hook before crtc->state has been
604 * initialized correctly.
608 * If the duplicate state references refcounted resources this hook must
609 * acquire a reference for each of them. The driver must release these
610 * references again in @atomic_destroy_state.
614 * Duplicated atomic state or NULL when the allocation failed.
616 struct drm_crtc_state
*(*atomic_duplicate_state
)(struct drm_crtc
*crtc
);
619 * @atomic_destroy_state:
621 * Destroy a state duplicated with @atomic_duplicate_state and release
622 * or unreference all resources it references
624 void (*atomic_destroy_state
)(struct drm_crtc
*crtc
,
625 struct drm_crtc_state
*state
);
628 * @atomic_set_property:
630 * Decode a driver-private property value and store the decoded value
631 * into the passed-in state structure. Since the atomic core decodes all
632 * standardized properties (even for extensions beyond the core set of
633 * properties which might not be implemented by all drivers) this
634 * requires drivers to subclass the state structure.
636 * Such driver-private properties should really only be implemented for
637 * truly hardware/vendor specific state. Instead it is preferred to
638 * standardize atomic extension and decode the properties used to expose
639 * such an extension in the core.
641 * Do not call this function directly, use
642 * drm_atomic_crtc_set_property() instead.
644 * This callback is optional if the driver does not support any
645 * driver-private atomic properties.
649 * This function is called in the state assembly phase of atomic
650 * modesets, which can be aborted for any reason (including on
651 * userspace's request to just check whether a configuration would be
652 * possible). Drivers MUST NOT touch any persistent state (hardware or
653 * software) or data structures except the passed in @state parameter.
655 * Also since userspace controls in which order properties are set this
656 * function must not do any input validation (since the state update is
657 * incomplete and hence likely inconsistent). Instead any such input
658 * validation must be done in the various atomic_check callbacks.
662 * 0 if the property has been found, -EINVAL if the property isn't
663 * implemented by the driver (which should never happen, the core only
664 * asks for properties attached to this CRTC). No other validation is
665 * allowed by the driver. The core already checks that the property
666 * value is within the range (integer, valid enum value, ...) the driver
667 * set when registering the property.
669 int (*atomic_set_property
)(struct drm_crtc
*crtc
,
670 struct drm_crtc_state
*state
,
671 struct drm_property
*property
,
674 * @atomic_get_property:
676 * Reads out the decoded driver-private property. This is used to
677 * implement the GETCRTC IOCTL.
679 * Do not call this function directly, use
680 * drm_atomic_crtc_get_property() instead.
682 * This callback is optional if the driver does not support any
683 * driver-private atomic properties.
687 * 0 on success, -EINVAL if the property isn't implemented by the
688 * driver (which should never happen, the core only asks for
689 * properties attached to this CRTC).
691 int (*atomic_get_property
)(struct drm_crtc
*crtc
,
692 const struct drm_crtc_state
*state
,
693 struct drm_property
*property
,
698 * struct drm_crtc - central CRTC control structure
699 * @dev: parent DRM device
700 * @port: OF node used by drm_of_find_possible_crtcs()
701 * @head: list management
702 * @mutex: per-CRTC locking
703 * @base: base KMS object for ID tracking etc.
704 * @primary: primary plane for this CRTC
705 * @cursor: cursor plane for this CRTC
706 * @cursor_x: current x position of the cursor, used for universal cursor planes
707 * @cursor_y: current y position of the cursor, used for universal cursor planes
708 * @enabled: is this CRTC enabled?
709 * @mode: current mode timings
710 * @hwmode: mode timings as programmed to hw regs
711 * @x: x position on screen
712 * @y: y position on screen
713 * @funcs: CRTC control functions
714 * @gamma_size: size of gamma ramp
715 * @gamma_store: gamma ramp values
716 * @helper_private: mid-layer private data
717 * @properties: property tracking for this CRTC
718 * @state: current atomic state for this CRTC
719 * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for
722 * Each CRTC may have one or more connectors associated with it. This structure
723 * allows the CRTC to be controlled.
726 struct drm_device
*dev
;
727 struct device_node
*port
;
728 struct list_head head
;
735 * This provides a read lock for the overall crtc state (mode, dpms
736 * state, ...) and a write lock for everything which can be update
737 * without a full modeset (fb, cursor data, ...)
739 struct drm_modeset_lock mutex
;
741 struct drm_mode_object base
;
743 /* primary and cursor planes for CRTC */
744 struct drm_plane
*primary
;
745 struct drm_plane
*cursor
;
747 /* position of cursor plane on crtc */
753 /* Requested mode from modesetting. */
754 struct drm_display_mode mode
;
756 /* Programmed mode in hw, after adjustments for encoders,
757 * crtc, panel scaling etc. Needed for timestamping etc.
759 struct drm_display_mode hwmode
;
762 const struct drm_crtc_funcs
*funcs
;
764 /* Legacy FB CRTC gamma size for reporting to userspace */
766 uint16_t *gamma_store
;
768 /* if you are using the helper */
769 const struct drm_crtc_helper_funcs
*helper_private
;
771 struct drm_object_properties properties
;
773 struct drm_crtc_state
*state
;
776 * For legacy crtc IOCTLs so that atomic drivers can get at the locking
779 struct drm_modeset_acquire_ctx
*acquire_ctx
;
783 * struct drm_connector_state - mutable connector state
784 * @connector: backpointer to the connector
785 * @crtc: CRTC to connect connector to, NULL if disabled
786 * @best_encoder: can be used by helpers and drivers to select the encoder
787 * @state: backpointer to global drm_atomic_state
789 struct drm_connector_state
{
790 struct drm_connector
*connector
;
792 struct drm_crtc
*crtc
; /* do not write directly, use drm_atomic_set_crtc_for_connector() */
794 struct drm_encoder
*best_encoder
;
796 struct drm_atomic_state
*state
;
800 * struct drm_connector_funcs - control connectors on a given device
802 * Each CRTC may have one or more connectors attached to it. The functions
803 * below allow the core DRM code to control connectors, enumerate available modes,
806 struct drm_connector_funcs
{
810 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS
811 * is exposed as a standard property on the connector, but diverted to
812 * this callback in the drm core. Note that atomic drivers don't
813 * implement the 4 level DPMS support on the connector any more, but
814 * instead only have an on/off "ACTIVE" property on the CRTC object.
816 * Drivers implementing atomic modeset should use
817 * drm_atomic_helper_connector_dpms() to implement this hook.
821 * 0 on success or a negative error code on failure.
823 int (*dpms
)(struct drm_connector
*connector
, int mode
);
828 * Reset connector hardware and software state to off. This function isn't
829 * called by the core directly, only through drm_mode_config_reset().
830 * It's not a helper hook only for historical reasons.
832 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset
833 * atomic state using this hook.
835 void (*reset
)(struct drm_connector
*connector
);
840 * Check to see if anything is attached to the connector. The parameter
841 * force is set to false whilst polling, true when checking the
842 * connector due to a user request. force can be used by the driver to
843 * avoid expensive, destructive operations during automated probing.
847 * Note that this hook is only called by the probe helper. It's not in
848 * the helper library vtable purely for historical reasons. The only DRM
849 * core entry point to probe connector state is @fill_modes.
853 * drm_connector_status indicating the connector's status.
855 enum drm_connector_status (*detect
)(struct drm_connector
*connector
,
861 * This function is called to update internal encoder state when the
862 * connector is forced to a certain state by userspace, either through
863 * the sysfs interfaces or on the kernel cmdline. In that case the
864 * @detect callback isn't called.
868 * Note that this hook is only called by the probe helper. It's not in
869 * the helper library vtable purely for historical reasons. The only DRM
870 * core entry point to probe connector state is @fill_modes.
872 void (*force
)(struct drm_connector
*connector
);
877 * Entry point for output detection and basic mode validation. The
878 * driver should reprobe the output if needed (e.g. when hotplug
879 * handling is unreliable), add all detected modes to connector->modes
880 * and filter out any the device can't support in any configuration. It
881 * also needs to filter out any modes wider or higher than the
882 * parameters max_width and max_height indicate.
884 * The drivers must also prune any modes no longer valid from
885 * connector->modes. Furthermore it must update connector->status and
886 * connector->edid. If no EDID has been received for this output
887 * connector->edid must be NULL.
889 * Drivers using the probe helpers should use
890 * drm_helper_probe_single_connector_modes() or
891 * drm_helper_probe_single_connector_modes_nomerge() to implement this
896 * The number of modes detected and filled into connector->modes.
898 int (*fill_modes
)(struct drm_connector
*connector
, uint32_t max_width
, uint32_t max_height
);
903 * This is the legacy entry point to update a property attached to the
906 * Drivers implementing atomic modeset should use
907 * drm_atomic_helper_connector_set_property() to implement this hook.
909 * This callback is optional if the driver does not support any legacy
910 * driver-private properties.
914 * 0 on success or a negative error code on failure.
916 int (*set_property
)(struct drm_connector
*connector
, struct drm_property
*property
,
922 * Clean up connector resources. This is called at driver unload time
923 * through drm_mode_config_cleanup(). It can also be called at runtime
924 * when a connector is being hot-unplugged for drivers that support
925 * connector hotplugging (e.g. DisplayPort MST).
927 void (*destroy
)(struct drm_connector
*connector
);
930 * @atomic_duplicate_state:
932 * Duplicate the current atomic state for this connector and return it.
933 * The core and helpers gurantee that any atomic state duplicated with
934 * this hook and still owned by the caller (i.e. not transferred to the
935 * driver by calling ->atomic_commit() from struct
936 * &drm_mode_config_funcs) will be cleaned up by calling the
937 * @atomic_destroy_state hook in this structure.
939 * Atomic drivers which don't subclass struct &drm_connector_state should use
940 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the
941 * state structure to extend it with driver-private state should use
942 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is
943 * duplicated in a consistent fashion across drivers.
945 * It is an error to call this hook before connector->state has been
946 * initialized correctly.
950 * If the duplicate state references refcounted resources this hook must
951 * acquire a reference for each of them. The driver must release these
952 * references again in @atomic_destroy_state.
956 * Duplicated atomic state or NULL when the allocation failed.
958 struct drm_connector_state
*(*atomic_duplicate_state
)(struct drm_connector
*connector
);
961 * @atomic_destroy_state:
963 * Destroy a state duplicated with @atomic_duplicate_state and release
964 * or unreference all resources it references
966 void (*atomic_destroy_state
)(struct drm_connector
*connector
,
967 struct drm_connector_state
*state
);
970 * @atomic_set_property:
972 * Decode a driver-private property value and store the decoded value
973 * into the passed-in state structure. Since the atomic core decodes all
974 * standardized properties (even for extensions beyond the core set of
975 * properties which might not be implemented by all drivers) this
976 * requires drivers to subclass the state structure.
978 * Such driver-private properties should really only be implemented for
979 * truly hardware/vendor specific state. Instead it is preferred to
980 * standardize atomic extension and decode the properties used to expose
981 * such an extension in the core.
983 * Do not call this function directly, use
984 * drm_atomic_connector_set_property() instead.
986 * This callback is optional if the driver does not support any
987 * driver-private atomic properties.
991 * This function is called in the state assembly phase of atomic
992 * modesets, which can be aborted for any reason (including on
993 * userspace's request to just check whether a configuration would be
994 * possible). Drivers MUST NOT touch any persistent state (hardware or
995 * software) or data structures except the passed in @state parameter.
997 * Also since userspace controls in which order properties are set this
998 * function must not do any input validation (since the state update is
999 * incomplete and hence likely inconsistent). Instead any such input
1000 * validation must be done in the various atomic_check callbacks.
1004 * 0 if the property has been found, -EINVAL if the property isn't
1005 * implemented by the driver (which shouldn't ever happen, the core only
1006 * asks for properties attached to this connector). No other validation
1007 * is allowed by the driver. The core already checks that the property
1008 * value is within the range (integer, valid enum value, ...) the driver
1009 * set when registering the property.
1011 int (*atomic_set_property
)(struct drm_connector
*connector
,
1012 struct drm_connector_state
*state
,
1013 struct drm_property
*property
,
1017 * @atomic_get_property:
1019 * Reads out the decoded driver-private property. This is used to
1020 * implement the GETCONNECTOR IOCTL.
1022 * Do not call this function directly, use
1023 * drm_atomic_connector_get_property() instead.
1025 * This callback is optional if the driver does not support any
1026 * driver-private atomic properties.
1030 * 0 on success, -EINVAL if the property isn't implemented by the
1031 * driver (which shouldn't ever happen, the core only asks for
1032 * properties attached to this connector).
1034 int (*atomic_get_property
)(struct drm_connector
*connector
,
1035 const struct drm_connector_state
*state
,
1036 struct drm_property
*property
,
1041 * struct drm_encoder_funcs - encoder controls
1043 * Encoders sit between CRTCs and connectors.
1045 struct drm_encoder_funcs
{
1049 * Reset encoder hardware and software state to off. This function isn't
1050 * called by the core directly, only through drm_mode_config_reset().
1051 * It's not a helper hook only for historical reasons.
1053 void (*reset
)(struct drm_encoder
*encoder
);
1058 * Clean up encoder resources. This is only called at driver unload time
1059 * through drm_mode_config_cleanup() since an encoder cannot be
1060 * hotplugged in DRM.
1062 void (*destroy
)(struct drm_encoder
*encoder
);
1065 #define DRM_CONNECTOR_MAX_ENCODER 3
1068 * struct drm_encoder - central DRM encoder structure
1069 * @dev: parent DRM device
1070 * @head: list management
1071 * @base: base KMS object
1072 * @name: encoder name
1073 * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
1074 * @possible_crtcs: bitmask of potential CRTC bindings
1075 * @possible_clones: bitmask of potential sibling encoders for cloning
1076 * @crtc: currently bound CRTC
1077 * @bridge: bridge associated to the encoder
1078 * @funcs: control functions
1079 * @helper_private: mid-layer private data
1081 * CRTCs drive pixels to encoders, which convert them into signals
1082 * appropriate for a given connector or set of connectors.
1084 struct drm_encoder
{
1085 struct drm_device
*dev
;
1086 struct list_head head
;
1088 struct drm_mode_object base
;
1091 uint32_t possible_crtcs
;
1092 uint32_t possible_clones
;
1094 struct drm_crtc
*crtc
;
1095 struct drm_bridge
*bridge
;
1096 const struct drm_encoder_funcs
*funcs
;
1097 const struct drm_encoder_helper_funcs
*helper_private
;
1100 /* should we poll this connector for connects and disconnects */
1101 /* hot plug detectable */
1102 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
1103 /* poll for connections */
1104 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
1105 /* can cleanly poll for disconnections without flickering the screen */
1106 /* DACs should rarely do this without a lot of testing */
1107 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
1109 #define MAX_ELD_BYTES 128
1112 * struct drm_connector - central DRM connector control structure
1113 * @dev: parent DRM device
1114 * @kdev: kernel device for sysfs attributes
1115 * @attr: sysfs attributes
1116 * @head: list management
1117 * @base: base KMS object
1118 * @name: connector name
1119 * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
1120 * @connector_type_id: index into connector type enum
1121 * @interlace_allowed: can this connector handle interlaced modes?
1122 * @doublescan_allowed: can this connector handle doublescan?
1123 * @stereo_allowed: can this connector handle stereo modes?
1124 * @modes: modes available on this connector (from fill_modes() + user)
1125 * @status: one of the drm_connector_status enums (connected, not, or unknown)
1126 * @probed_modes: list of modes derived directly from the display
1127 * @display_info: information about attached display (e.g. from EDID)
1128 * @funcs: connector control functions
1129 * @edid_blob_ptr: DRM property containing EDID if present
1130 * @properties: property tracking for this connector
1131 * @path_blob_ptr: DRM blob property data for the DP MST path property
1132 * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
1133 * @dpms: current dpms state
1134 * @helper_private: mid-layer private data
1135 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
1136 * @force: a %DRM_FORCE_<foo> state for forced mode sets
1137 * @override_edid: has the EDID been overwritten through debugfs for testing?
1138 * @encoder_ids: valid encoders for this connector
1139 * @encoder: encoder driving this connector, if any
1140 * @eld: EDID-like data, if present
1141 * @dvi_dual: dual link DVI, if found
1142 * @max_tmds_clock: max clock rate, if found
1143 * @latency_present: AV delay info from ELD, if found
1144 * @video_latency: video latency info from ELD, if found
1145 * @audio_latency: audio latency info from ELD, if found
1146 * @null_edid_counter: track sinks that give us all zeros for the EDID
1147 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
1148 * @edid_corrupt: indicates whether the last read EDID was corrupt
1149 * @debugfs_entry: debugfs directory for this connector
1150 * @state: current atomic state for this connector
1151 * @has_tile: is this connector connected to a tiled monitor
1152 * @tile_group: tile group for the connected monitor
1153 * @tile_is_single_monitor: whether the tile is one monitor housing
1154 * @num_h_tile: number of horizontal tiles in the tile group
1155 * @num_v_tile: number of vertical tiles in the tile group
1156 * @tile_h_loc: horizontal location of this tile
1157 * @tile_v_loc: vertical location of this tile
1158 * @tile_h_size: horizontal size of this tile.
1159 * @tile_v_size: vertical size of this tile.
1161 * Each connector may be connected to one or more CRTCs, or may be clonable by
1162 * another connector if they can share a CRTC. Each connector also has a specific
1163 * position in the broader display (referred to as a 'screen' though it could
1164 * span multiple monitors).
1166 struct drm_connector
{
1167 struct drm_device
*dev
;
1168 struct device
*kdev
;
1169 struct device_attribute
*attr
;
1170 struct list_head head
;
1172 struct drm_mode_object base
;
1177 int connector_type_id
;
1178 bool interlace_allowed
;
1179 bool doublescan_allowed
;
1180 bool stereo_allowed
;
1181 struct list_head modes
; /* list of modes on this connector */
1183 enum drm_connector_status status
;
1185 /* these are modes added by probing with DDC or the BIOS */
1186 struct list_head probed_modes
;
1188 struct drm_display_info display_info
;
1189 const struct drm_connector_funcs
*funcs
;
1191 struct drm_property_blob
*edid_blob_ptr
;
1192 struct drm_object_properties properties
;
1194 struct drm_property_blob
*path_blob_ptr
;
1196 struct drm_property_blob
*tile_blob_ptr
;
1198 uint8_t polled
; /* DRM_CONNECTOR_POLL_* */
1200 /* requested DPMS state */
1203 const struct drm_connector_helper_funcs
*helper_private
;
1205 /* forced on connector */
1206 struct drm_cmdline_mode cmdline_mode
;
1207 enum drm_connector_force force
;
1209 uint32_t encoder_ids
[DRM_CONNECTOR_MAX_ENCODER
];
1210 struct drm_encoder
*encoder
; /* currently active encoder */
1213 uint8_t eld
[MAX_ELD_BYTES
];
1215 int max_tmds_clock
; /* in MHz */
1216 bool latency_present
[2];
1217 int video_latency
[2]; /* [0]: progressive, [1]: interlaced */
1218 int audio_latency
[2];
1219 int null_edid_counter
; /* needed to workaround some HW bugs where we get all 0s */
1220 unsigned bad_edid_counter
;
1222 /* Flag for raw EDID header corruption - used in Displayport
1223 * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6
1227 struct dentry
*debugfs_entry
;
1229 struct drm_connector_state
*state
;
1231 /* DisplayID bits */
1233 struct drm_tile_group
*tile_group
;
1234 bool tile_is_single_monitor
;
1236 uint8_t num_h_tile
, num_v_tile
;
1237 uint8_t tile_h_loc
, tile_v_loc
;
1238 uint16_t tile_h_size
, tile_v_size
;
1242 * struct drm_plane_state - mutable plane state
1243 * @plane: backpointer to the plane
1244 * @crtc: currently bound CRTC, NULL if disabled
1245 * @fb: currently bound framebuffer
1246 * @fence: optional fence to wait for before scanning out @fb
1247 * @crtc_x: left position of visible portion of plane on crtc
1248 * @crtc_y: upper position of visible portion of plane on crtc
1249 * @crtc_w: width of visible portion of plane on crtc
1250 * @crtc_h: height of visible portion of plane on crtc
1251 * @src_x: left position of visible portion of plane within
1253 * @src_y: upper position of visible portion of plane within
1255 * @src_w: width of visible portion of plane (in 16.16)
1256 * @src_h: height of visible portion of plane (in 16.16)
1257 * @state: backpointer to global drm_atomic_state
1259 struct drm_plane_state
{
1260 struct drm_plane
*plane
;
1262 struct drm_crtc
*crtc
; /* do not write directly, use drm_atomic_set_crtc_for_plane() */
1263 struct drm_framebuffer
*fb
; /* do not write directly, use drm_atomic_set_fb_for_plane() */
1264 struct fence
*fence
;
1266 /* Signed dest location allows it to be partially off screen */
1267 int32_t crtc_x
, crtc_y
;
1268 uint32_t crtc_w
, crtc_h
;
1270 /* Source values are 16.16 fixed point */
1271 uint32_t src_x
, src_y
;
1272 uint32_t src_h
, src_w
;
1274 /* Plane rotation */
1275 unsigned int rotation
;
1277 struct drm_atomic_state
*state
;
1282 * struct drm_plane_funcs - driver plane control functions
1284 struct drm_plane_funcs
{
1288 * This is the legacy entry point to enable and configure the plane for
1289 * the given CRTC and framebuffer. It is never called to disable the
1290 * plane, i.e. the passed-in crtc and fb paramters are never NULL.
1292 * The source rectangle in frame buffer memory coordinates is given by
1293 * the src_x, src_y, src_w and src_h parameters (as 16.16 fixed point
1294 * values). Devices that don't support subpixel plane coordinates can
1295 * ignore the fractional part.
1297 * The destination rectangle in CRTC coordinates is given by the
1298 * crtc_x, crtc_y, crtc_w and crtc_h parameters (as integer values).
1299 * Devices scale the source rectangle to the destination rectangle. If
1300 * scaling is not supported, and the source rectangle size doesn't match
1301 * the destination rectangle size, the driver must return a
1302 * -<errorname>EINVAL</errorname> error.
1304 * Drivers implementing atomic modeset should use
1305 * drm_atomic_helper_update_plane() to implement this hook.
1309 * 0 on success or a negative error code on failure.
1311 int (*update_plane
)(struct drm_plane
*plane
,
1312 struct drm_crtc
*crtc
, struct drm_framebuffer
*fb
,
1313 int crtc_x
, int crtc_y
,
1314 unsigned int crtc_w
, unsigned int crtc_h
,
1315 uint32_t src_x
, uint32_t src_y
,
1316 uint32_t src_w
, uint32_t src_h
);
1321 * This is the legacy entry point to disable the plane. The DRM core
1322 * calls this method in response to a DRM_IOCTL_MODE_SETPLANE IOCTL call
1323 * with the frame buffer ID set to 0. Disabled planes must not be
1324 * processed by the CRTC.
1326 * Drivers implementing atomic modeset should use
1327 * drm_atomic_helper_disable_plane() to implement this hook.
1331 * 0 on success or a negative error code on failure.
1333 int (*disable_plane
)(struct drm_plane
*plane
);
1338 * Clean up plane resources. This is only called at driver unload time
1339 * through drm_mode_config_cleanup() since a plane cannot be hotplugged
1342 void (*destroy
)(struct drm_plane
*plane
);
1347 * Reset plane hardware and software state to off. This function isn't
1348 * called by the core directly, only through drm_mode_config_reset().
1349 * It's not a helper hook only for historical reasons.
1351 * Atomic drivers can use drm_atomic_helper_plane_reset() to reset
1352 * atomic state using this hook.
1354 void (*reset
)(struct drm_plane
*plane
);
1359 * This is the legacy entry point to update a property attached to the
1362 * Drivers implementing atomic modeset should use
1363 * drm_atomic_helper_plane_set_property() to implement this hook.
1365 * This callback is optional if the driver does not support any legacy
1366 * driver-private properties.
1370 * 0 on success or a negative error code on failure.
1372 int (*set_property
)(struct drm_plane
*plane
,
1373 struct drm_property
*property
, uint64_t val
);
1376 * @atomic_duplicate_state:
1378 * Duplicate the current atomic state for this plane and return it.
1379 * The core and helpers gurantee that any atomic state duplicated with
1380 * this hook and still owned by the caller (i.e. not transferred to the
1381 * driver by calling ->atomic_commit() from struct
1382 * &drm_mode_config_funcs) will be cleaned up by calling the
1383 * @atomic_destroy_state hook in this structure.
1385 * Atomic drivers which don't subclass struct &drm_plane_state should use
1386 * drm_atomic_helper_plane_duplicate_state(). Drivers that subclass the
1387 * state structure to extend it with driver-private state should use
1388 * __drm_atomic_helper_plane_duplicate_state() to make sure shared state is
1389 * duplicated in a consistent fashion across drivers.
1391 * It is an error to call this hook before plane->state has been
1392 * initialized correctly.
1396 * If the duplicate state references refcounted resources this hook must
1397 * acquire a reference for each of them. The driver must release these
1398 * references again in @atomic_destroy_state.
1402 * Duplicated atomic state or NULL when the allocation failed.
1404 struct drm_plane_state
*(*atomic_duplicate_state
)(struct drm_plane
*plane
);
1407 * @atomic_destroy_state:
1409 * Destroy a state duplicated with @atomic_duplicate_state and release
1410 * or unreference all resources it references
1412 void (*atomic_destroy_state
)(struct drm_plane
*plane
,
1413 struct drm_plane_state
*state
);
1416 * @atomic_set_property:
1418 * Decode a driver-private property value and store the decoded value
1419 * into the passed-in state structure. Since the atomic core decodes all
1420 * standardized properties (even for extensions beyond the core set of
1421 * properties which might not be implemented by all drivers) this
1422 * requires drivers to subclass the state structure.
1424 * Such driver-private properties should really only be implemented for
1425 * truly hardware/vendor specific state. Instead it is preferred to
1426 * standardize atomic extension and decode the properties used to expose
1427 * such an extension in the core.
1429 * Do not call this function directly, use
1430 * drm_atomic_plane_set_property() instead.
1432 * This callback is optional if the driver does not support any
1433 * driver-private atomic properties.
1437 * This function is called in the state assembly phase of atomic
1438 * modesets, which can be aborted for any reason (including on
1439 * userspace's request to just check whether a configuration would be
1440 * possible). Drivers MUST NOT touch any persistent state (hardware or
1441 * software) or data structures except the passed in @state parameter.
1443 * Also since userspace controls in which order properties are set this
1444 * function must not do any input validation (since the state update is
1445 * incomplete and hence likely inconsistent). Instead any such input
1446 * validation must be done in the various atomic_check callbacks.
1450 * 0 if the property has been found, -EINVAL if the property isn't
1451 * implemented by the driver (which shouldn't ever happen, the core only
1452 * asks for properties attached to this plane). No other validation is
1453 * allowed by the driver. The core already checks that the property
1454 * value is within the range (integer, valid enum value, ...) the driver
1455 * set when registering the property.
1457 int (*atomic_set_property
)(struct drm_plane
*plane
,
1458 struct drm_plane_state
*state
,
1459 struct drm_property
*property
,
1463 * @atomic_get_property:
1465 * Reads out the decoded driver-private property. This is used to
1466 * implement the GETPLANE IOCTL.
1468 * Do not call this function directly, use
1469 * drm_atomic_plane_get_property() instead.
1471 * This callback is optional if the driver does not support any
1472 * driver-private atomic properties.
1476 * 0 on success, -EINVAL if the property isn't implemented by the
1477 * driver (which should never happen, the core only asks for
1478 * properties attached to this plane).
1480 int (*atomic_get_property
)(struct drm_plane
*plane
,
1481 const struct drm_plane_state
*state
,
1482 struct drm_property
*property
,
1486 enum drm_plane_type
{
1487 DRM_PLANE_TYPE_OVERLAY
,
1488 DRM_PLANE_TYPE_PRIMARY
,
1489 DRM_PLANE_TYPE_CURSOR
,
1494 * struct drm_plane - central DRM plane control structure
1495 * @dev: DRM device this plane belongs to
1496 * @head: for list management
1497 * @base: base mode object
1498 * @possible_crtcs: pipes this plane can be bound to
1499 * @format_types: array of formats supported by this plane
1500 * @format_count: number of formats supported
1501 * @format_default: driver hasn't supplied supported formats for the plane
1502 * @crtc: currently bound CRTC
1503 * @fb: currently bound fb
1504 * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
1505 * drm_mode_set_config_internal() to implement correct refcounting.
1506 * @funcs: helper functions
1507 * @properties: property tracking for this plane
1508 * @type: type of plane (overlay, primary, cursor)
1509 * @state: current atomic state for this plane
1512 struct drm_device
*dev
;
1513 struct list_head head
;
1517 struct drm_modeset_lock mutex
;
1519 struct drm_mode_object base
;
1521 uint32_t possible_crtcs
;
1522 uint32_t *format_types
;
1523 unsigned int format_count
;
1524 bool format_default
;
1526 struct drm_crtc
*crtc
;
1527 struct drm_framebuffer
*fb
;
1529 struct drm_framebuffer
*old_fb
;
1531 const struct drm_plane_funcs
*funcs
;
1533 struct drm_object_properties properties
;
1535 enum drm_plane_type type
;
1537 const struct drm_plane_helper_funcs
*helper_private
;
1539 struct drm_plane_state
*state
;
1543 * struct drm_bridge_funcs - drm_bridge control functions
1544 * @attach: Called during drm_bridge_attach
1546 struct drm_bridge_funcs
{
1547 int (*attach
)(struct drm_bridge
*bridge
);
1552 * This callback is used to validate and adjust a mode. The paramater
1553 * mode is the display mode that should be fed to the next element in
1554 * the display chain, either the final &drm_connector or the next
1555 * &drm_bridge. The parameter adjusted_mode is the input mode the bridge
1556 * requires. It can be modified by this callback and does not need to
1559 * This is the only hook that allows a bridge to reject a modeset. If
1560 * this function passes all other callbacks must succeed for this
1565 * This function is called in the check phase of atomic modesets, which
1566 * can be aborted for any reason (including on userspace's request to
1567 * just check whether a configuration would be possible). Drivers MUST
1568 * NOT touch any persistent state (hardware or software) or data
1569 * structures except the passed in @state parameter.
1573 * True if an acceptable configuration is possible, false if the modeset
1574 * operation should be rejected.
1576 bool (*mode_fixup
)(struct drm_bridge
*bridge
,
1577 const struct drm_display_mode
*mode
,
1578 struct drm_display_mode
*adjusted_mode
);
1582 * This callback should disable the bridge. It is called right before
1583 * the preceding element in the display pipe is disabled. If the
1584 * preceding element is a bridge this means it's called before that
1585 * bridge's ->disable() function. If the preceding element is a
1586 * &drm_encoder it's called right before the encoder's ->disable(),
1587 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
1589 * The bridge can assume that the display pipe (i.e. clocks and timing
1590 * signals) feeding it is still running when this callback is called.
1592 * The disable callback is optional.
1594 void (*disable
)(struct drm_bridge
*bridge
);
1599 * This callback should disable the bridge. It is called right after
1600 * the preceding element in the display pipe is disabled. If the
1601 * preceding element is a bridge this means it's called after that
1602 * bridge's ->post_disable() function. If the preceding element is a
1603 * &drm_encoder it's called right after the encoder's ->disable(),
1604 * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
1606 * The bridge must assume that the display pipe (i.e. clocks and timing
1607 * singals) feeding it is no longer running when this callback is
1610 * The post_disable callback is optional.
1612 void (*post_disable
)(struct drm_bridge
*bridge
);
1617 * This callback should set the given mode on the bridge. It is called
1618 * after the ->mode_set() callback for the preceding element in the
1619 * display pipeline has been called already. The display pipe (i.e.
1620 * clocks and timing signals) is off when this function is called.
1622 void (*mode_set
)(struct drm_bridge
*bridge
,
1623 struct drm_display_mode
*mode
,
1624 struct drm_display_mode
*adjusted_mode
);
1628 * This callback should enable the bridge. It is called right before
1629 * the preceding element in the display pipe is enabled. If the
1630 * preceding element is a bridge this means it's called before that
1631 * bridge's ->pre_enable() function. If the preceding element is a
1632 * &drm_encoder it's called right before the encoder's ->enable(),
1633 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
1635 * The display pipe (i.e. clocks and timing signals) feeding this bridge
1636 * will not yet be running when this callback is called. The bridge must
1637 * not enable the display link feeding the next bridge in the chain (if
1638 * there is one) when this callback is called.
1640 * The pre_enable callback is optional.
1642 void (*pre_enable
)(struct drm_bridge
*bridge
);
1647 * This callback should enable the bridge. It is called right after
1648 * the preceding element in the display pipe is enabled. If the
1649 * preceding element is a bridge this means it's called after that
1650 * bridge's ->enable() function. If the preceding element is a
1651 * &drm_encoder it's called right after the encoder's ->enable(),
1652 * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
1654 * The bridge can assume that the display pipe (i.e. clocks and timing
1655 * signals) feeding it is running when this callback is called. This
1656 * callback must enable the display link feeding the next bridge in the
1657 * chain if there is one.
1659 * The enable callback is optional.
1661 void (*enable
)(struct drm_bridge
*bridge
);
1665 * struct drm_bridge - central DRM bridge control structure
1666 * @dev: DRM device this bridge belongs to
1667 * @encoder: encoder to which this bridge is connected
1668 * @next: the next bridge in the encoder chain
1669 * @of_node: device node pointer to the bridge
1670 * @list: to keep track of all added bridges
1671 * @funcs: control functions
1672 * @driver_private: pointer to the bridge driver's internal context
1675 struct drm_device
*dev
;
1676 struct drm_encoder
*encoder
;
1677 struct drm_bridge
*next
;
1679 struct device_node
*of_node
;
1681 struct list_head list
;
1683 const struct drm_bridge_funcs
*funcs
;
1684 void *driver_private
;
1688 * struct drm_atomic_state - the global state object for atomic updates
1689 * @dev: parent DRM device
1690 * @allow_modeset: allow full modeset
1691 * @legacy_cursor_update: hint to enforce legacy cursor IOCTL semantics
1692 * @legacy_set_config: Disable conflicting encoders instead of failing with -EINVAL.
1693 * @planes: pointer to array of plane pointers
1694 * @plane_states: pointer to array of plane states pointers
1695 * @crtcs: pointer to array of CRTC pointers
1696 * @crtc_states: pointer to array of CRTC states pointers
1697 * @num_connector: size of the @connectors and @connector_states arrays
1698 * @connectors: pointer to array of connector pointers
1699 * @connector_states: pointer to array of connector states pointers
1700 * @acquire_ctx: acquire context for this atomic modeset state update
1702 struct drm_atomic_state
{
1703 struct drm_device
*dev
;
1704 bool allow_modeset
: 1;
1705 bool legacy_cursor_update
: 1;
1706 bool legacy_set_config
: 1;
1707 struct drm_plane
**planes
;
1708 struct drm_plane_state
**plane_states
;
1709 struct drm_crtc
**crtcs
;
1710 struct drm_crtc_state
**crtc_states
;
1712 struct drm_connector
**connectors
;
1713 struct drm_connector_state
**connector_states
;
1715 struct drm_modeset_acquire_ctx
*acquire_ctx
;
1720 * struct drm_mode_set - new values for a CRTC config change
1721 * @fb: framebuffer to use for new config
1722 * @crtc: CRTC whose configuration we're about to change
1723 * @mode: mode timings to use
1724 * @x: position of this CRTC relative to @fb
1725 * @y: position of this CRTC relative to @fb
1726 * @connectors: array of connectors to drive with this CRTC if possible
1727 * @num_connectors: size of @connectors array
1729 * Represents a single crtc the connectors that it drives with what mode
1730 * and from which framebuffer it scans out from.
1732 * This is used to set modes.
1734 struct drm_mode_set
{
1735 struct drm_framebuffer
*fb
;
1736 struct drm_crtc
*crtc
;
1737 struct drm_display_mode
*mode
;
1742 struct drm_connector
**connectors
;
1743 size_t num_connectors
;
1747 * struct drm_mode_config_funcs - basic driver provided mode setting functions
1749 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
1752 struct drm_mode_config_funcs
{
1756 * Create a new framebuffer object. The core does basic checks on the
1757 * requested metadata, but most of that is left to the driver. See
1758 * struct &drm_mode_fb_cmd2 for details.
1760 * If the parameters are deemed valid and the backing storage objects in
1761 * the underlying memory manager all exist, then the driver allocates
1762 * a new &drm_framebuffer structure, subclassed to contain
1763 * driver-specific information (like the internal native buffer object
1764 * references). It also needs to fill out all relevant metadata, which
1765 * should be done by calling drm_helper_mode_fill_fb_struct().
1767 * The initialization is finalized by calling drm_framebuffer_init(),
1768 * which registers the framebuffer and makes it accessible to other
1773 * A new framebuffer with an initial reference count of 1 or a negative
1774 * error code encoded with ERR_PTR().
1776 struct drm_framebuffer
*(*fb_create
)(struct drm_device
*dev
,
1777 struct drm_file
*file_priv
,
1778 const struct drm_mode_fb_cmd2
*mode_cmd
);
1781 * @output_poll_changed:
1783 * Callback used by helpers to inform the driver of output configuration
1786 * Drivers implementing fbdev emulation with the helpers can call
1787 * drm_fb_helper_hotplug_changed from this hook to inform the fbdev
1788 * helper of output changes.
1792 * Except that there's no vtable for device-level helper callbacks
1793 * there's no reason this is a core function.
1795 void (*output_poll_changed
)(struct drm_device
*dev
);
1800 * This is the only hook to validate an atomic modeset update. This
1801 * function must reject any modeset and state changes which the hardware
1802 * or driver doesn't support. This includes but is of course not limited
1805 * - Checking that the modes, framebuffers, scaling and placement
1806 * requirements and so on are within the limits of the hardware.
1808 * - Checking that any hidden shared resources are not oversubscribed.
1809 * This can be shared PLLs, shared lanes, overall memory bandwidth,
1810 * display fifo space (where shared between planes or maybe even
1813 * - Checking that virtualized resources exported to userspace are not
1814 * oversubscribed. For various reasons it can make sense to expose
1815 * more planes, crtcs or encoders than which are physically there. One
1816 * example is dual-pipe operations (which generally should be hidden
1817 * from userspace if when lockstepped in hardware, exposed otherwise),
1818 * where a plane might need 1 hardware plane (if it's just on one
1819 * pipe), 2 hardware planes (when it spans both pipes) or maybe even
1820 * shared a hardware plane with a 2nd plane (if there's a compatible
1821 * plane requested on the area handled by the other pipe).
1823 * - Check that any transitional state is possible and that if
1824 * requested, the update can indeed be done in the vblank period
1825 * without temporarily disabling some functions.
1827 * - Check any other constraints the driver or hardware might have.
1829 * - This callback also needs to correctly fill out the &drm_crtc_state
1830 * in this update to make sure that drm_atomic_crtc_needs_modeset()
1831 * reflects the nature of the possible update and returns true if and
1832 * only if the update cannot be applied without tearing within one
1833 * vblank on that CRTC. The core uses that information to reject
1834 * updates which require a full modeset (i.e. blanking the screen, or
1835 * at least pausing updates for a substantial amount of time) if
1836 * userspace has disallowed that in its request.
1838 * - The driver also does not need to repeat basic input validation
1839 * like done for the corresponding legacy entry points. The core does
1840 * that before calling this hook.
1842 * See the documentation of @atomic_commit for an exhaustive list of
1843 * error conditions which don't have to be checked at the
1844 * ->atomic_check() stage?
1846 * See the documentation for struct &drm_atomic_state for how exactly
1847 * an atomic modeset update is described.
1849 * Drivers using the atomic helpers can implement this hook using
1850 * drm_atomic_helper_check(), or one of the exported sub-functions of
1855 * 0 on success or one of the below negative error codes:
1857 * - -EINVAL, if any of the above constraints are violated.
1859 * - -EDEADLK, when returned from an attempt to acquire an additional
1860 * &drm_modeset_lock through drm_modeset_lock().
1862 * - -ENOMEM, if allocating additional state sub-structures failed due
1863 * to lack of memory.
1865 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
1866 * This can either be due to a pending signal, or because the driver
1867 * needs to completely bail out to recover from an exceptional
1868 * situation like a GPU hang. From a userspace point all errors are
1871 int (*atomic_check
)(struct drm_device
*dev
,
1872 struct drm_atomic_state
*state
);
1877 * This is the only hook to commit an atomic modeset update. The core
1878 * guarantees that @atomic_check has been called successfully before
1879 * calling this function, and that nothing has been changed in the
1882 * See the documentation for struct &drm_atomic_state for how exactly
1883 * an atomic modeset update is described.
1885 * Drivers using the atomic helpers can implement this hook using
1886 * drm_atomic_helper_commit(), or one of the exported sub-functions of
1889 * Nonblocking commits (as indicated with the nonblock parameter) must
1890 * do any preparatory work which might result in an unsuccessful commit
1891 * in the context of this callback. The only exceptions are hardware
1892 * errors resulting in -EIO. But even in that case the driver must
1893 * ensure that the display pipe is at least running, to avoid
1894 * compositors crashing when pageflips don't work. Anything else,
1895 * specifically committing the update to the hardware, should be done
1896 * without blocking the caller. For updates which do not require a
1897 * modeset this must be guaranteed.
1899 * The driver must wait for any pending rendering to the new
1900 * framebuffers to complete before executing the flip. It should also
1901 * wait for any pending rendering from other drivers if the underlying
1902 * buffer is a shared dma-buf. Nonblocking commits must not wait for
1903 * rendering in the context of this callback.
1905 * An application can request to be notified when the atomic commit has
1906 * completed. These events are per-CRTC and can be distinguished by the
1907 * CRTC index supplied in &drm_event to userspace.
1909 * The drm core will supply a struct &drm_event in the event
1910 * member of each CRTC's &drm_crtc_state structure. This can be handled by the
1911 * drm_crtc_send_vblank_event() function, which the driver should call on
1912 * the provided event upon completion of the atomic commit. Note that if
1913 * the driver supports vblank signalling and timestamping the vblank
1914 * counters and timestamps must agree with the ones returned from page
1915 * flip events. With the current vblank helper infrastructure this can
1916 * be achieved by holding a vblank reference while the page flip is
1917 * pending, acquired through drm_crtc_vblank_get() and released with
1918 * drm_crtc_vblank_put(). Drivers are free to implement their own vblank
1919 * counter and timestamp tracking though, e.g. if they have accurate
1920 * timestamp registers in hardware.
1924 * Drivers are not allowed to shut down any display pipe successfully
1925 * enabled through an atomic commit on their own. Doing so can result in
1926 * compositors crashing if a page flip is suddenly rejected because the
1931 * 0 on success or one of the below negative error codes:
1933 * - -EBUSY, if a nonblocking updated is requested and there is
1934 * an earlier updated pending. Drivers are allowed to support a queue
1935 * of outstanding updates, but currently no driver supports that.
1936 * Note that drivers must wait for preceding updates to complete if a
1937 * synchronous update is requested, they are not allowed to fail the
1938 * commit in that case.
1940 * - -ENOMEM, if the driver failed to allocate memory. Specifically
1941 * this can happen when trying to pin framebuffers, which must only
1942 * be done when committing the state.
1944 * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate
1945 * that the driver has run out of vram, iommu space or similar GPU
1946 * address space needed for framebuffer.
1948 * - -EIO, if the hardware completely died.
1950 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
1951 * This can either be due to a pending signal, or because the driver
1952 * needs to completely bail out to recover from an exceptional
1953 * situation like a GPU hang. From a userspace point of view all errors are
1956 * This list is exhaustive. Specifically this hook is not allowed to
1957 * return -EINVAL (any invalid requests should be caught in
1958 * @atomic_check) or -EDEADLK (this function must not acquire
1959 * additional modeset locks).
1961 int (*atomic_commit
)(struct drm_device
*dev
,
1962 struct drm_atomic_state
*state
,
1966 * @atomic_state_alloc:
1968 * This optional hook can be used by drivers that want to subclass struct
1969 * &drm_atomic_state to be able to track their own driver-private global
1970 * state easily. If this hook is implemented, drivers must also
1971 * implement @atomic_state_clear and @atomic_state_free.
1975 * A new &drm_atomic_state on success or NULL on failure.
1977 struct drm_atomic_state
*(*atomic_state_alloc
)(struct drm_device
*dev
);
1980 * @atomic_state_clear:
1982 * This hook must clear any driver private state duplicated into the
1983 * passed-in &drm_atomic_state. This hook is called when the caller
1984 * encountered a &drm_modeset_lock deadlock and needs to drop all
1985 * already acquired locks as part of the deadlock avoidance dance
1986 * implemented in drm_modeset_lock_backoff().
1988 * Any duplicated state must be invalidated since a concurrent atomic
1989 * update might change it, and the drm atomic interfaces always apply
1990 * updates as relative changes to the current state.
1992 * Drivers that implement this must call drm_atomic_state_default_clear()
1993 * to clear common state.
1995 void (*atomic_state_clear
)(struct drm_atomic_state
*state
);
1998 * @atomic_state_free:
2000 * This hook needs driver private resources and the &drm_atomic_state
2001 * itself. Note that the core first calls drm_atomic_state_clear() to
2002 * avoid code duplicate between the clear and free hooks.
2004 * Drivers that implement this must call drm_atomic_state_default_free()
2005 * to release common resources.
2007 void (*atomic_state_free
)(struct drm_atomic_state
*state
);
2011 * struct drm_mode_config - Mode configuration control structure
2012 * @mutex: mutex protecting KMS related lists and structures
2013 * @connection_mutex: ww mutex protecting connector state and routing
2014 * @acquire_ctx: global implicit acquire context used by atomic drivers for
2016 * @idr_mutex: mutex for KMS ID allocation and management
2017 * @crtc_idr: main KMS ID tracking object
2018 * @fb_lock: mutex to protect fb state and lists
2019 * @num_fb: number of fbs available
2020 * @fb_list: list of framebuffers available
2021 * @num_connector: number of connectors on this device
2022 * @connector_list: list of connector objects
2023 * @num_encoder: number of encoders on this device
2024 * @encoder_list: list of encoder objects
2025 * @num_overlay_plane: number of overlay planes on this device
2026 * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
2027 * @plane_list: list of plane objects
2028 * @num_crtc: number of CRTCs on this device
2029 * @crtc_list: list of CRTC objects
2030 * @property_list: list of property objects
2031 * @min_width: minimum pixel width on this device
2032 * @min_height: minimum pixel height on this device
2033 * @max_width: maximum pixel width on this device
2034 * @max_height: maximum pixel height on this device
2035 * @funcs: core driver provided mode setting functions
2036 * @fb_base: base address of the framebuffer
2037 * @poll_enabled: track polling support for this device
2038 * @poll_running: track polling status for this device
2039 * @output_poll_work: delayed work for polling in process context
2040 * @property_blob_list: list of all the blob property objects
2041 * @blob_lock: mutex for blob property allocation and management
2042 * @*_property: core property tracking
2043 * @degamma_lut_property: LUT used to convert the framebuffer's colors to linear
2045 * @degamma_lut_size_property: size of the degamma LUT as supported by the
2046 * driver (read-only)
2047 * @ctm_property: Matrix used to convert colors after the lookup in the
2049 * @gamma_lut_property: LUT used to convert the colors, after the CSC matrix, to
2050 * the gamma space of the connected screen (read-only)
2051 * @gamma_lut_size_property: size of the gamma LUT as supported by the driver
2052 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
2053 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
2054 * @async_page_flip: does this device support async flips on the primary plane?
2055 * @cursor_width: hint to userspace for max cursor width
2056 * @cursor_height: hint to userspace for max cursor height
2058 * Core mode resource tracking structure. All CRTC, encoders, and connectors
2059 * enumerated by the driver are added here, as are global properties. Some
2060 * global restrictions are also here, e.g. dimension restrictions.
2062 struct drm_mode_config
{
2063 struct mutex mutex
; /* protects configuration (mode lists etc.) */
2064 struct drm_modeset_lock connection_mutex
; /* protects connector->encoder and encoder->crtc links */
2065 struct drm_modeset_acquire_ctx
*acquire_ctx
; /* for legacy _lock_all() / _unlock_all() */
2066 struct mutex idr_mutex
; /* for IDR management */
2067 struct idr crtc_idr
; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
2068 struct idr tile_idr
; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
2069 /* this is limited to one for now */
2071 struct mutex fb_lock
; /* proctects global and per-file fb lists */
2073 struct list_head fb_list
;
2076 struct ida connector_ida
;
2077 struct list_head connector_list
;
2079 struct list_head encoder_list
;
2082 * Track # of overlay planes separately from # of total planes. By
2083 * default we only advertise overlay planes to userspace; if userspace
2084 * sets the "universal plane" capability bit, we'll go ahead and
2085 * expose all planes.
2087 int num_overlay_plane
;
2088 int num_total_plane
;
2089 struct list_head plane_list
;
2092 struct list_head crtc_list
;
2094 struct list_head property_list
;
2096 int min_width
, min_height
;
2097 int max_width
, max_height
;
2098 const struct drm_mode_config_funcs
*funcs
;
2099 resource_size_t fb_base
;
2101 /* output poll support */
2105 struct delayed_work output_poll_work
;
2107 struct mutex blob_lock
;
2109 /* pointers to standard properties */
2110 struct list_head property_blob_list
;
2111 struct drm_property
*edid_property
;
2112 struct drm_property
*dpms_property
;
2113 struct drm_property
*path_property
;
2114 struct drm_property
*tile_property
;
2115 struct drm_property
*plane_type_property
;
2116 struct drm_property
*rotation_property
;
2117 struct drm_property
*prop_src_x
;
2118 struct drm_property
*prop_src_y
;
2119 struct drm_property
*prop_src_w
;
2120 struct drm_property
*prop_src_h
;
2121 struct drm_property
*prop_crtc_x
;
2122 struct drm_property
*prop_crtc_y
;
2123 struct drm_property
*prop_crtc_w
;
2124 struct drm_property
*prop_crtc_h
;
2125 struct drm_property
*prop_fb_id
;
2126 struct drm_property
*prop_crtc_id
;
2127 struct drm_property
*prop_active
;
2128 struct drm_property
*prop_mode_id
;
2130 /* DVI-I properties */
2131 struct drm_property
*dvi_i_subconnector_property
;
2132 struct drm_property
*dvi_i_select_subconnector_property
;
2135 struct drm_property
*tv_subconnector_property
;
2136 struct drm_property
*tv_select_subconnector_property
;
2137 struct drm_property
*tv_mode_property
;
2138 struct drm_property
*tv_left_margin_property
;
2139 struct drm_property
*tv_right_margin_property
;
2140 struct drm_property
*tv_top_margin_property
;
2141 struct drm_property
*tv_bottom_margin_property
;
2142 struct drm_property
*tv_brightness_property
;
2143 struct drm_property
*tv_contrast_property
;
2144 struct drm_property
*tv_flicker_reduction_property
;
2145 struct drm_property
*tv_overscan_property
;
2146 struct drm_property
*tv_saturation_property
;
2147 struct drm_property
*tv_hue_property
;
2149 /* Optional properties */
2150 struct drm_property
*scaling_mode_property
;
2151 struct drm_property
*aspect_ratio_property
;
2152 struct drm_property
*dirty_info_property
;
2154 /* Optional color correction properties */
2155 struct drm_property
*degamma_lut_property
;
2156 struct drm_property
*degamma_lut_size_property
;
2157 struct drm_property
*ctm_property
;
2158 struct drm_property
*gamma_lut_property
;
2159 struct drm_property
*gamma_lut_size_property
;
2161 /* properties for virtual machine layout */
2162 struct drm_property
*suggested_x_property
;
2163 struct drm_property
*suggested_y_property
;
2165 /* dumb ioctl parameters */
2166 uint32_t preferred_depth
, prefer_shadow
;
2168 /* whether async page flip is supported or not */
2169 bool async_page_flip
;
2171 /* whether the driver supports fb modifiers */
2172 bool allow_fb_modifiers
;
2175 uint32_t cursor_width
, cursor_height
;
2179 * drm_for_each_plane_mask - iterate over planes specified by bitmask
2180 * @plane: the loop cursor
2181 * @dev: the DRM device
2182 * @plane_mask: bitmask of plane indices
2184 * Iterate over all planes specified by bitmask.
2186 #define drm_for_each_plane_mask(plane, dev, plane_mask) \
2187 list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
2188 for_each_if ((plane_mask) & (1 << drm_plane_index(plane)))
2191 * drm_for_each_encoder_mask - iterate over encoders specified by bitmask
2192 * @encoder: the loop cursor
2193 * @dev: the DRM device
2194 * @encoder_mask: bitmask of encoder indices
2196 * Iterate over all encoders specified by bitmask.
2198 #define drm_for_each_encoder_mask(encoder, dev, encoder_mask) \
2199 list_for_each_entry((encoder), &(dev)->mode_config.encoder_list, head) \
2200 for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
2202 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
2203 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
2204 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
2205 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
2206 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
2207 #define obj_to_property(x) container_of(x, struct drm_property, base)
2208 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
2209 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
2211 struct drm_prop_enum_list
{
2216 extern __printf(6, 7)
2217 int drm_crtc_init_with_planes(struct drm_device
*dev
,
2218 struct drm_crtc
*crtc
,
2219 struct drm_plane
*primary
,
2220 struct drm_plane
*cursor
,
2221 const struct drm_crtc_funcs
*funcs
,
2222 const char *name
, ...);
2223 extern void drm_crtc_cleanup(struct drm_crtc
*crtc
);
2224 extern unsigned int drm_crtc_index(struct drm_crtc
*crtc
);
2227 * drm_crtc_mask - find the mask of a registered CRTC
2228 * @crtc: CRTC to find mask for
2230 * Given a registered CRTC, return the mask bit of that CRTC for an
2231 * encoder's possible_crtcs field.
2233 static inline uint32_t drm_crtc_mask(struct drm_crtc
*crtc
)
2235 return 1 << drm_crtc_index(crtc
);
2238 extern void drm_connector_ida_init(void);
2239 extern void drm_connector_ida_destroy(void);
2240 extern int drm_connector_init(struct drm_device
*dev
,
2241 struct drm_connector
*connector
,
2242 const struct drm_connector_funcs
*funcs
,
2243 int connector_type
);
2244 int drm_connector_register(struct drm_connector
*connector
);
2245 void drm_connector_unregister(struct drm_connector
*connector
);
2247 extern void drm_connector_cleanup(struct drm_connector
*connector
);
2248 static inline unsigned drm_connector_index(struct drm_connector
*connector
)
2250 return connector
->connector_id
;
2253 /* helpers to {un}register all connectors from sysfs for device */
2254 extern int drm_connector_register_all(struct drm_device
*dev
);
2255 extern void drm_connector_unregister_all(struct drm_device
*dev
);
2257 extern int drm_bridge_add(struct drm_bridge
*bridge
);
2258 extern void drm_bridge_remove(struct drm_bridge
*bridge
);
2259 extern struct drm_bridge
*of_drm_find_bridge(struct device_node
*np
);
2260 extern int drm_bridge_attach(struct drm_device
*dev
, struct drm_bridge
*bridge
);
2262 bool drm_bridge_mode_fixup(struct drm_bridge
*bridge
,
2263 const struct drm_display_mode
*mode
,
2264 struct drm_display_mode
*adjusted_mode
);
2265 void drm_bridge_disable(struct drm_bridge
*bridge
);
2266 void drm_bridge_post_disable(struct drm_bridge
*bridge
);
2267 void drm_bridge_mode_set(struct drm_bridge
*bridge
,
2268 struct drm_display_mode
*mode
,
2269 struct drm_display_mode
*adjusted_mode
);
2270 void drm_bridge_pre_enable(struct drm_bridge
*bridge
);
2271 void drm_bridge_enable(struct drm_bridge
*bridge
);
2273 extern __printf(5, 6)
2274 int drm_encoder_init(struct drm_device
*dev
,
2275 struct drm_encoder
*encoder
,
2276 const struct drm_encoder_funcs
*funcs
,
2277 int encoder_type
, const char *name
, ...);
2278 extern unsigned int drm_encoder_index(struct drm_encoder
*encoder
);
2281 * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
2282 * @encoder: encoder to test
2283 * @crtc: crtc to test
2285 * Return false if @encoder can't be driven by @crtc, true otherwise.
2287 static inline bool drm_encoder_crtc_ok(struct drm_encoder
*encoder
,
2288 struct drm_crtc
*crtc
)
2290 return !!(encoder
->possible_crtcs
& drm_crtc_mask(crtc
));
2293 extern __printf(8, 9)
2294 int drm_universal_plane_init(struct drm_device
*dev
,
2295 struct drm_plane
*plane
,
2296 unsigned long possible_crtcs
,
2297 const struct drm_plane_funcs
*funcs
,
2298 const uint32_t *formats
,
2299 unsigned int format_count
,
2300 enum drm_plane_type type
,
2301 const char *name
, ...);
2302 extern int drm_plane_init(struct drm_device
*dev
,
2303 struct drm_plane
*plane
,
2304 unsigned long possible_crtcs
,
2305 const struct drm_plane_funcs
*funcs
,
2306 const uint32_t *formats
, unsigned int format_count
,
2308 extern void drm_plane_cleanup(struct drm_plane
*plane
);
2309 extern unsigned int drm_plane_index(struct drm_plane
*plane
);
2310 extern struct drm_plane
* drm_plane_from_index(struct drm_device
*dev
, int idx
);
2311 extern void drm_plane_force_disable(struct drm_plane
*plane
);
2312 extern int drm_plane_check_pixel_format(const struct drm_plane
*plane
,
2314 extern void drm_crtc_get_hv_timing(const struct drm_display_mode
*mode
,
2315 int *hdisplay
, int *vdisplay
);
2316 extern int drm_crtc_check_viewport(const struct drm_crtc
*crtc
,
2318 const struct drm_display_mode
*mode
,
2319 const struct drm_framebuffer
*fb
);
2321 extern void drm_encoder_cleanup(struct drm_encoder
*encoder
);
2323 extern const char *drm_get_connector_status_name(enum drm_connector_status status
);
2324 extern const char *drm_get_subpixel_order_name(enum subpixel_order order
);
2325 extern const char *drm_get_dpms_name(int val
);
2326 extern const char *drm_get_dvi_i_subconnector_name(int val
);
2327 extern const char *drm_get_dvi_i_select_name(int val
);
2328 extern const char *drm_get_tv_subconnector_name(int val
);
2329 extern const char *drm_get_tv_select_name(int val
);
2330 extern void drm_fb_release(struct drm_file
*file_priv
);
2331 extern void drm_property_destroy_user_blobs(struct drm_device
*dev
,
2332 struct drm_file
*file_priv
);
2333 extern bool drm_probe_ddc(struct i2c_adapter
*adapter
);
2334 extern struct edid
*drm_get_edid(struct drm_connector
*connector
,
2335 struct i2c_adapter
*adapter
);
2336 extern struct edid
*drm_get_edid_switcheroo(struct drm_connector
*connector
,
2337 struct i2c_adapter
*adapter
);
2338 extern struct edid
*drm_edid_duplicate(const struct edid
*edid
);
2339 extern int drm_add_edid_modes(struct drm_connector
*connector
, struct edid
*edid
);
2340 extern void drm_mode_config_init(struct drm_device
*dev
);
2341 extern void drm_mode_config_reset(struct drm_device
*dev
);
2342 extern void drm_mode_config_cleanup(struct drm_device
*dev
);
2344 extern int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
2346 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
);
2347 extern int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
2348 const struct edid
*edid
);
2350 extern int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
2352 unsigned int num_formats
);
2354 static inline bool drm_property_type_is(struct drm_property
*property
,
2357 /* instanceof for props.. handles extended type vs original types: */
2358 if (property
->flags
& DRM_MODE_PROP_EXTENDED_TYPE
)
2359 return (property
->flags
& DRM_MODE_PROP_EXTENDED_TYPE
) == type
;
2360 return property
->flags
& type
;
2363 static inline bool drm_property_type_valid(struct drm_property
*property
)
2365 if (property
->flags
& DRM_MODE_PROP_EXTENDED_TYPE
)
2366 return !(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
2367 return !!(property
->flags
& DRM_MODE_PROP_LEGACY_TYPE
);
2370 extern int drm_object_property_set_value(struct drm_mode_object
*obj
,
2371 struct drm_property
*property
,
2373 extern int drm_object_property_get_value(struct drm_mode_object
*obj
,
2374 struct drm_property
*property
,
2376 extern int drm_framebuffer_init(struct drm_device
*dev
,
2377 struct drm_framebuffer
*fb
,
2378 const struct drm_framebuffer_funcs
*funcs
);
2379 extern struct drm_framebuffer
*drm_framebuffer_lookup(struct drm_device
*dev
,
2381 extern void drm_framebuffer_remove(struct drm_framebuffer
*fb
);
2382 extern void drm_framebuffer_cleanup(struct drm_framebuffer
*fb
);
2383 extern void drm_framebuffer_unregister_private(struct drm_framebuffer
*fb
);
2385 extern void drm_object_attach_property(struct drm_mode_object
*obj
,
2386 struct drm_property
*property
,
2388 extern struct drm_property
*drm_property_create(struct drm_device
*dev
, int flags
,
2389 const char *name
, int num_values
);
2390 extern struct drm_property
*drm_property_create_enum(struct drm_device
*dev
, int flags
,
2392 const struct drm_prop_enum_list
*props
,
2394 struct drm_property
*drm_property_create_bitmask(struct drm_device
*dev
,
2395 int flags
, const char *name
,
2396 const struct drm_prop_enum_list
*props
,
2398 uint64_t supported_bits
);
2399 struct drm_property
*drm_property_create_range(struct drm_device
*dev
, int flags
,
2401 uint64_t min
, uint64_t max
);
2402 struct drm_property
*drm_property_create_signed_range(struct drm_device
*dev
,
2403 int flags
, const char *name
,
2404 int64_t min
, int64_t max
);
2405 struct drm_property
*drm_property_create_object(struct drm_device
*dev
,
2406 int flags
, const char *name
, uint32_t type
);
2407 struct drm_property
*drm_property_create_bool(struct drm_device
*dev
, int flags
,
2409 struct drm_property_blob
*drm_property_create_blob(struct drm_device
*dev
,
2412 struct drm_property_blob
*drm_property_lookup_blob(struct drm_device
*dev
,
2414 struct drm_property_blob
*drm_property_reference_blob(struct drm_property_blob
*blob
);
2415 void drm_property_unreference_blob(struct drm_property_blob
*blob
);
2416 extern void drm_property_destroy(struct drm_device
*dev
, struct drm_property
*property
);
2417 extern int drm_property_add_enum(struct drm_property
*property
, int index
,
2418 uint64_t value
, const char *name
);
2419 extern int drm_mode_create_dvi_i_properties(struct drm_device
*dev
);
2420 extern int drm_mode_create_tv_properties(struct drm_device
*dev
,
2421 unsigned int num_modes
,
2422 const char * const modes
[]);
2423 extern int drm_mode_create_scaling_mode_property(struct drm_device
*dev
);
2424 extern int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
);
2425 extern int drm_mode_create_dirty_info_property(struct drm_device
*dev
);
2426 extern int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
);
2427 extern bool drm_property_change_valid_get(struct drm_property
*property
,
2428 uint64_t value
, struct drm_mode_object
**ref
);
2429 extern void drm_property_change_valid_put(struct drm_property
*property
,
2430 struct drm_mode_object
*ref
);
2432 extern int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
2433 struct drm_encoder
*encoder
);
2434 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc
*crtc
,
2436 extern struct drm_mode_object
*drm_mode_object_find(struct drm_device
*dev
,
2437 uint32_t id
, uint32_t type
);
2438 void drm_mode_object_reference(struct drm_mode_object
*obj
);
2439 void drm_mode_object_unreference(struct drm_mode_object
*obj
);
2442 extern int drm_mode_getresources(struct drm_device
*dev
,
2443 void *data
, struct drm_file
*file_priv
);
2444 extern int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
2445 struct drm_file
*file_priv
);
2446 extern int drm_mode_getcrtc(struct drm_device
*dev
,
2447 void *data
, struct drm_file
*file_priv
);
2448 extern int drm_mode_getconnector(struct drm_device
*dev
,
2449 void *data
, struct drm_file
*file_priv
);
2450 extern int drm_mode_set_config_internal(struct drm_mode_set
*set
);
2451 extern int drm_mode_setcrtc(struct drm_device
*dev
,
2452 void *data
, struct drm_file
*file_priv
);
2453 extern int drm_mode_getplane(struct drm_device
*dev
,
2454 void *data
, struct drm_file
*file_priv
);
2455 extern int drm_mode_setplane(struct drm_device
*dev
,
2456 void *data
, struct drm_file
*file_priv
);
2457 extern int drm_mode_cursor_ioctl(struct drm_device
*dev
,
2458 void *data
, struct drm_file
*file_priv
);
2459 extern int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
2460 void *data
, struct drm_file
*file_priv
);
2461 extern int drm_mode_addfb(struct drm_device
*dev
,
2462 void *data
, struct drm_file
*file_priv
);
2463 extern int drm_mode_addfb2(struct drm_device
*dev
,
2464 void *data
, struct drm_file
*file_priv
);
2465 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp
, uint32_t depth
);
2466 extern int drm_mode_rmfb(struct drm_device
*dev
,
2467 void *data
, struct drm_file
*file_priv
);
2468 extern int drm_mode_getfb(struct drm_device
*dev
,
2469 void *data
, struct drm_file
*file_priv
);
2470 extern int drm_mode_dirtyfb_ioctl(struct drm_device
*dev
,
2471 void *data
, struct drm_file
*file_priv
);
2473 extern int drm_mode_getproperty_ioctl(struct drm_device
*dev
,
2474 void *data
, struct drm_file
*file_priv
);
2475 extern int drm_mode_getblob_ioctl(struct drm_device
*dev
,
2476 void *data
, struct drm_file
*file_priv
);
2477 extern int drm_mode_createblob_ioctl(struct drm_device
*dev
,
2478 void *data
, struct drm_file
*file_priv
);
2479 extern int drm_mode_destroyblob_ioctl(struct drm_device
*dev
,
2480 void *data
, struct drm_file
*file_priv
);
2481 extern int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
2482 void *data
, struct drm_file
*file_priv
);
2483 extern int drm_mode_getencoder(struct drm_device
*dev
,
2484 void *data
, struct drm_file
*file_priv
);
2485 extern int drm_mode_gamma_get_ioctl(struct drm_device
*dev
,
2486 void *data
, struct drm_file
*file_priv
);
2487 extern int drm_mode_gamma_set_ioctl(struct drm_device
*dev
,
2488 void *data
, struct drm_file
*file_priv
);
2489 extern u8
drm_match_cea_mode(const struct drm_display_mode
*to_match
);
2490 extern enum hdmi_picture_aspect
drm_get_cea_aspect_ratio(const u8 video_code
);
2491 extern bool drm_detect_hdmi_monitor(struct edid
*edid
);
2492 extern bool drm_detect_monitor_audio(struct edid
*edid
);
2493 extern bool drm_rgb_quant_range_selectable(struct edid
*edid
);
2494 extern int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
2495 void *data
, struct drm_file
*file_priv
);
2496 extern int drm_add_modes_noedid(struct drm_connector
*connector
,
2497 int hdisplay
, int vdisplay
);
2498 extern void drm_set_preferred_mode(struct drm_connector
*connector
,
2499 int hpref
, int vpref
);
2501 extern int drm_edid_header_is_valid(const u8
*raw_edid
);
2502 extern bool drm_edid_block_valid(u8
*raw_edid
, int block
, bool print_bad_edid
,
2503 bool *edid_corrupt
);
2504 extern bool drm_edid_is_valid(struct edid
*edid
);
2505 extern void drm_edid_get_monitor_name(struct edid
*edid
, char *name
,
2508 extern struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
2510 extern struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
2512 extern void drm_mode_put_tile_group(struct drm_device
*dev
,
2513 struct drm_tile_group
*tg
);
2514 struct drm_display_mode
*drm_mode_find_dmt(struct drm_device
*dev
,
2515 int hsize
, int vsize
, int fresh
,
2518 extern int drm_mode_create_dumb_ioctl(struct drm_device
*dev
,
2519 void *data
, struct drm_file
*file_priv
);
2520 extern int drm_mode_mmap_dumb_ioctl(struct drm_device
*dev
,
2521 void *data
, struct drm_file
*file_priv
);
2522 extern int drm_mode_destroy_dumb_ioctl(struct drm_device
*dev
,
2523 void *data
, struct drm_file
*file_priv
);
2524 extern int drm_mode_obj_get_properties_ioctl(struct drm_device
*dev
, void *data
,
2525 struct drm_file
*file_priv
);
2526 extern int drm_mode_obj_set_property_ioctl(struct drm_device
*dev
, void *data
,
2527 struct drm_file
*file_priv
);
2528 extern int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
2529 struct drm_property
*property
,
2531 extern int drm_mode_atomic_ioctl(struct drm_device
*dev
,
2532 void *data
, struct drm_file
*file_priv
);
2534 extern void drm_fb_get_bpp_depth(uint32_t format
, unsigned int *depth
,
2536 extern int drm_format_num_planes(uint32_t format
);
2537 extern int drm_format_plane_cpp(uint32_t format
, int plane
);
2538 extern int drm_format_horz_chroma_subsampling(uint32_t format
);
2539 extern int drm_format_vert_chroma_subsampling(uint32_t format
);
2540 extern int drm_format_plane_width(int width
, uint32_t format
, int plane
);
2541 extern int drm_format_plane_height(int height
, uint32_t format
, int plane
);
2542 extern const char *drm_get_format_name(uint32_t format
);
2543 extern struct drm_property
*drm_mode_create_rotation_property(struct drm_device
*dev
,
2544 unsigned int supported_rotations
);
2545 extern unsigned int drm_rotation_simplify(unsigned int rotation
,
2546 unsigned int supported_rotations
);
2550 static inline struct drm_plane
*drm_plane_find(struct drm_device
*dev
,
2553 struct drm_mode_object
*mo
;
2554 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_PLANE
);
2555 return mo
? obj_to_plane(mo
) : NULL
;
2558 static inline struct drm_crtc
*drm_crtc_find(struct drm_device
*dev
,
2561 struct drm_mode_object
*mo
;
2562 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_CRTC
);
2563 return mo
? obj_to_crtc(mo
) : NULL
;
2566 static inline struct drm_encoder
*drm_encoder_find(struct drm_device
*dev
,
2569 struct drm_mode_object
*mo
;
2570 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_ENCODER
);
2571 return mo
? obj_to_encoder(mo
) : NULL
;
2575 * drm_connector_lookup - lookup connector object
2577 * @id: connector object id
2579 * This function looks up the connector object specified by id
2580 * add takes a reference to it.
2582 static inline struct drm_connector
*drm_connector_lookup(struct drm_device
*dev
,
2585 struct drm_mode_object
*mo
;
2586 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_CONNECTOR
);
2587 return mo
? obj_to_connector(mo
) : NULL
;
2590 static inline struct drm_property
*drm_property_find(struct drm_device
*dev
,
2593 struct drm_mode_object
*mo
;
2594 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_PROPERTY
);
2595 return mo
? obj_to_property(mo
) : NULL
;
2599 * Extract a degamma/gamma LUT value provided by user and round it to the
2600 * precision supported by the hardware.
2602 static inline uint32_t drm_color_lut_extract(uint32_t user_input
,
2603 uint32_t bit_precision
)
2605 uint32_t val
= user_input
;
2606 uint32_t max
= 0xffff >> (16 - bit_precision
);
2608 /* Round only if we're not using full precision. */
2609 if (bit_precision
< 16) {
2610 val
+= 1UL << (16 - bit_precision
- 1);
2611 val
>>= 16 - bit_precision
;
2614 return clamp_val(val
, 0, max
);
2618 * drm_framebuffer_reference - incr the fb refcnt
2621 * This functions increments the fb's refcount.
2623 static inline void drm_framebuffer_reference(struct drm_framebuffer
*fb
)
2625 drm_mode_object_reference(&fb
->base
);
2629 * drm_framebuffer_unreference - unref a framebuffer
2630 * @fb: framebuffer to unref
2632 * This functions decrements the fb's refcount and frees it if it drops to zero.
2634 static inline void drm_framebuffer_unreference(struct drm_framebuffer
*fb
)
2636 drm_mode_object_unreference(&fb
->base
);
2640 * drm_framebuffer_read_refcount - read the framebuffer reference count.
2643 * This functions returns the framebuffer's reference count.
2645 static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer
*fb
)
2647 return atomic_read(&fb
->base
.refcount
.refcount
);
2651 * drm_connector_reference - incr the connector refcnt
2652 * @connector: connector
2654 * This function increments the connector's refcount.
2656 static inline void drm_connector_reference(struct drm_connector
*connector
)
2658 drm_mode_object_reference(&connector
->base
);
2662 * drm_connector_unreference - unref a connector
2663 * @connector: connector to unref
2665 * This function decrements the connector's refcount and frees it if it drops to zero.
2667 static inline void drm_connector_unreference(struct drm_connector
*connector
)
2669 drm_mode_object_unreference(&connector
->base
);
2672 /* Plane list iterator for legacy (overlay only) planes. */
2673 #define drm_for_each_legacy_plane(plane, dev) \
2674 list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \
2675 for_each_if (plane->type == DRM_PLANE_TYPE_OVERLAY)
2677 #define drm_for_each_plane(plane, dev) \
2678 list_for_each_entry(plane, &(dev)->mode_config.plane_list, head)
2680 #define drm_for_each_crtc(crtc, dev) \
2681 list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)
2684 assert_drm_connector_list_read_locked(struct drm_mode_config
*mode_config
)
2687 * The connector hotadd/remove code currently grabs both locks when
2688 * updating lists. Hence readers need only hold either of them to be
2689 * safe and the check amounts to
2691 * WARN_ON(not_holding(A) && not_holding(B)).
2693 WARN_ON(!mutex_is_locked(&mode_config
->mutex
) &&
2694 !drm_modeset_is_locked(&mode_config
->connection_mutex
));
2697 #define drm_for_each_connector(connector, dev) \
2698 for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \
2699 connector = list_first_entry(&(dev)->mode_config.connector_list, \
2700 struct drm_connector, head); \
2701 &connector->head != (&(dev)->mode_config.connector_list); \
2702 connector = list_next_entry(connector, head))
2704 #define drm_for_each_encoder(encoder, dev) \
2705 list_for_each_entry(encoder, &(dev)->mode_config.encoder_list, head)
2707 #define drm_for_each_fb(fb, dev) \
2708 for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)), \
2709 fb = list_first_entry(&(dev)->mode_config.fb_list, \
2710 struct drm_framebuffer, head); \
2711 &fb->head != (&(dev)->mode_config.fb_list); \
2712 fb = list_next_entry(fb, head))
2714 #endif /* __DRM_CRTC_H__ */