xref: /dflybsd-src/sys/dev/drm/include/drm/drm_framebuffer.h (revision 3f2dd94a569761201b5b0a18b2f697f97fe1b9dc)
11dedbd3bSFrançois Tigeot /*
21dedbd3bSFrançois Tigeot  * Copyright (c) 2016 Intel Corporation
31dedbd3bSFrançois Tigeot  *
41dedbd3bSFrançois Tigeot  * Permission to use, copy, modify, distribute, and sell this software and its
51dedbd3bSFrançois Tigeot  * documentation for any purpose is hereby granted without fee, provided that
61dedbd3bSFrançois Tigeot  * the above copyright notice appear in all copies and that both that copyright
71dedbd3bSFrançois Tigeot  * notice and this permission notice appear in supporting documentation, and
81dedbd3bSFrançois Tigeot  * that the name of the copyright holders not be used in advertising or
91dedbd3bSFrançois Tigeot  * publicity pertaining to distribution of the software without specific,
101dedbd3bSFrançois Tigeot  * written prior permission.  The copyright holders make no representations
111dedbd3bSFrançois Tigeot  * about the suitability of this software for any purpose.  It is provided "as
121dedbd3bSFrançois Tigeot  * is" without express or implied warranty.
131dedbd3bSFrançois Tigeot  *
141dedbd3bSFrançois Tigeot  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
151dedbd3bSFrançois Tigeot  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
161dedbd3bSFrançois Tigeot  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
171dedbd3bSFrançois Tigeot  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
181dedbd3bSFrançois Tigeot  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
191dedbd3bSFrançois Tigeot  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
201dedbd3bSFrançois Tigeot  * OF THIS SOFTWARE.
211dedbd3bSFrançois Tigeot  */
221dedbd3bSFrançois Tigeot 
231dedbd3bSFrançois Tigeot #ifndef __DRM_FRAMEBUFFER_H__
241dedbd3bSFrançois Tigeot #define __DRM_FRAMEBUFFER_H__
251dedbd3bSFrançois Tigeot 
261dedbd3bSFrançois Tigeot #include <linux/list.h>
271dedbd3bSFrançois Tigeot #include <linux/ctype.h>
281dedbd3bSFrançois Tigeot #include <drm/drm_mode_object.h>
291dedbd3bSFrançois Tigeot 
301dedbd3bSFrançois Tigeot struct drm_framebuffer;
311dedbd3bSFrançois Tigeot struct drm_file;
321dedbd3bSFrançois Tigeot struct drm_device;
331dedbd3bSFrançois Tigeot 
341dedbd3bSFrançois Tigeot /**
351dedbd3bSFrançois Tigeot  * struct drm_framebuffer_funcs - framebuffer hooks
361dedbd3bSFrançois Tigeot  */
371dedbd3bSFrançois Tigeot struct drm_framebuffer_funcs {
381dedbd3bSFrançois Tigeot 	/**
391dedbd3bSFrançois Tigeot 	 * @destroy:
401dedbd3bSFrançois Tigeot 	 *
411dedbd3bSFrançois Tigeot 	 * Clean up framebuffer resources, specifically also unreference the
421dedbd3bSFrançois Tigeot 	 * backing storage. The core guarantees to call this function for every
43a85cb24fSFrançois Tigeot 	 * framebuffer successfully created by calling
44a85cb24fSFrançois Tigeot 	 * &drm_mode_config_funcs.fb_create. Drivers must also call
451dedbd3bSFrançois Tigeot 	 * drm_framebuffer_cleanup() to release DRM core resources for this
461dedbd3bSFrançois Tigeot 	 * framebuffer.
471dedbd3bSFrançois Tigeot 	 */
481dedbd3bSFrançois Tigeot 	void (*destroy)(struct drm_framebuffer *framebuffer);
491dedbd3bSFrançois Tigeot 
501dedbd3bSFrançois Tigeot 	/**
511dedbd3bSFrançois Tigeot 	 * @create_handle:
521dedbd3bSFrançois Tigeot 	 *
531dedbd3bSFrançois Tigeot 	 * Create a buffer handle in the driver-specific buffer manager (either
54a85cb24fSFrançois Tigeot 	 * GEM or TTM) valid for the passed-in &struct drm_file. This is used by
551dedbd3bSFrançois Tigeot 	 * the core to implement the GETFB IOCTL, which returns (for
561dedbd3bSFrançois Tigeot 	 * sufficiently priviledged user) also a native buffer handle. This can
571dedbd3bSFrançois Tigeot 	 * be used for seamless transitions between modesetting clients by
581dedbd3bSFrançois Tigeot 	 * copying the current screen contents to a private buffer and blending
591dedbd3bSFrançois Tigeot 	 * between that and the new contents.
601dedbd3bSFrançois Tigeot 	 *
611dedbd3bSFrançois Tigeot 	 * GEM based drivers should call drm_gem_handle_create() to create the
621dedbd3bSFrançois Tigeot 	 * handle.
631dedbd3bSFrançois Tigeot 	 *
641dedbd3bSFrançois Tigeot 	 * RETURNS:
651dedbd3bSFrançois Tigeot 	 *
661dedbd3bSFrançois Tigeot 	 * 0 on success or a negative error code on failure.
671dedbd3bSFrançois Tigeot 	 */
681dedbd3bSFrançois Tigeot 	int (*create_handle)(struct drm_framebuffer *fb,
691dedbd3bSFrançois Tigeot 			     struct drm_file *file_priv,
701dedbd3bSFrançois Tigeot 			     unsigned int *handle);
711dedbd3bSFrançois Tigeot 	/**
721dedbd3bSFrançois Tigeot 	 * @dirty:
731dedbd3bSFrançois Tigeot 	 *
741dedbd3bSFrançois Tigeot 	 * Optional callback for the dirty fb IOCTL.
751dedbd3bSFrançois Tigeot 	 *
761dedbd3bSFrançois Tigeot 	 * Userspace can notify the driver via this callback that an area of the
771dedbd3bSFrançois Tigeot 	 * framebuffer has changed and should be flushed to the display
781dedbd3bSFrançois Tigeot 	 * hardware. This can also be used internally, e.g. by the fbdev
791dedbd3bSFrançois Tigeot 	 * emulation, though that's not the case currently.
801dedbd3bSFrançois Tigeot 	 *
811dedbd3bSFrançois Tigeot 	 * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
821dedbd3bSFrançois Tigeot 	 * for more information as all the semantics and arguments have a one to
831dedbd3bSFrançois Tigeot 	 * one mapping on this function.
841dedbd3bSFrançois Tigeot 	 *
851dedbd3bSFrançois Tigeot 	 * RETURNS:
861dedbd3bSFrançois Tigeot 	 *
871dedbd3bSFrançois Tigeot 	 * 0 on success or a negative error code on failure.
881dedbd3bSFrançois Tigeot 	 */
891dedbd3bSFrançois Tigeot 	int (*dirty)(struct drm_framebuffer *framebuffer,
901dedbd3bSFrançois Tigeot 		     struct drm_file *file_priv, unsigned flags,
911dedbd3bSFrançois Tigeot 		     unsigned color, struct drm_clip_rect *clips,
921dedbd3bSFrançois Tigeot 		     unsigned num_clips);
931dedbd3bSFrançois Tigeot };
941dedbd3bSFrançois Tigeot 
951dedbd3bSFrançois Tigeot /**
961dedbd3bSFrançois Tigeot  * struct drm_framebuffer - frame buffer object
971dedbd3bSFrançois Tigeot  *
981dedbd3bSFrançois Tigeot  * Note that the fb is refcounted for the benefit of driver internals,
991dedbd3bSFrançois Tigeot  * for example some hw, disabling a CRTC/plane is asynchronous, and
1001dedbd3bSFrançois Tigeot  * scanout does not actually complete until the next vblank.  So some
1011dedbd3bSFrançois Tigeot  * cleanup (like releasing the reference(s) on the backing GEM bo(s))
1021dedbd3bSFrançois Tigeot  * should be deferred.  In cases like this, the driver would like to
1031dedbd3bSFrançois Tigeot  * hold a ref to the fb even though it has already been removed from
104a85cb24fSFrançois Tigeot  * userspace perspective. See drm_framebuffer_get() and
105a85cb24fSFrançois Tigeot  * drm_framebuffer_put().
1061dedbd3bSFrançois Tigeot  *
1071dedbd3bSFrançois Tigeot  * The refcount is stored inside the mode object @base.
1081dedbd3bSFrançois Tigeot  */
1091dedbd3bSFrançois Tigeot struct drm_framebuffer {
1101dedbd3bSFrançois Tigeot 	/**
1111dedbd3bSFrançois Tigeot 	 * @dev: DRM device this framebuffer belongs to
1121dedbd3bSFrançois Tigeot 	 */
1131dedbd3bSFrançois Tigeot 	struct drm_device *dev;
1141dedbd3bSFrançois Tigeot 	/**
115a85cb24fSFrançois Tigeot 	 * @head: Place on the &drm_mode_config.fb_list, access protected by
116a85cb24fSFrançois Tigeot 	 * &drm_mode_config.fb_lock.
1171dedbd3bSFrançois Tigeot 	 */
1181dedbd3bSFrançois Tigeot 	struct list_head head;
1191dedbd3bSFrançois Tigeot 
1201dedbd3bSFrançois Tigeot 	/**
1211dedbd3bSFrançois Tigeot 	 * @base: base modeset object structure, contains the reference count.
1221dedbd3bSFrançois Tigeot 	 */
1231dedbd3bSFrançois Tigeot 	struct drm_mode_object base;
1241dedbd3bSFrançois Tigeot 	/**
125a85cb24fSFrançois Tigeot 	 * @format: framebuffer format information
126a85cb24fSFrançois Tigeot 	 */
127a85cb24fSFrançois Tigeot 	const struct drm_format_info *format;
128a85cb24fSFrançois Tigeot 	/**
1291dedbd3bSFrançois Tigeot 	 * @funcs: framebuffer vfunc table
1301dedbd3bSFrançois Tigeot 	 */
1311dedbd3bSFrançois Tigeot 	const struct drm_framebuffer_funcs *funcs;
1321dedbd3bSFrançois Tigeot 	/**
1331dedbd3bSFrançois Tigeot 	 * @pitches: Line stride per buffer. For userspace created object this
1341dedbd3bSFrançois Tigeot 	 * is copied from drm_mode_fb_cmd2.
1351dedbd3bSFrançois Tigeot 	 */
1361dedbd3bSFrançois Tigeot 	unsigned int pitches[4];
1371dedbd3bSFrançois Tigeot 	/**
1381dedbd3bSFrançois Tigeot 	 * @offsets: Offset from buffer start to the actual pixel data in bytes,
1391dedbd3bSFrançois Tigeot 	 * per buffer. For userspace created object this is copied from
1401dedbd3bSFrançois Tigeot 	 * drm_mode_fb_cmd2.
1411dedbd3bSFrançois Tigeot 	 *
1421dedbd3bSFrançois Tigeot 	 * Note that this is a linear offset and does not take into account
1431dedbd3bSFrançois Tigeot 	 * tiling or buffer laytou per @modifier. It meant to be used when the
1441dedbd3bSFrançois Tigeot 	 * actual pixel data for this framebuffer plane starts at an offset,
1451dedbd3bSFrançois Tigeot 	 * e.g.  when multiple planes are allocated within the same backing
1461dedbd3bSFrançois Tigeot 	 * storage buffer object. For tiled layouts this generally means it
1471dedbd3bSFrançois Tigeot 	 * @offsets must at least be tile-size aligned, but hardware often has
1481dedbd3bSFrançois Tigeot 	 * stricter requirements.
1491dedbd3bSFrançois Tigeot 	 *
1501dedbd3bSFrançois Tigeot 	 * This should not be used to specifiy x/y pixel offsets into the buffer
1511dedbd3bSFrançois Tigeot 	 * data (even for linear buffers). Specifying an x/y pixel offset is
152a85cb24fSFrançois Tigeot 	 * instead done through the source rectangle in &struct drm_plane_state.
1531dedbd3bSFrançois Tigeot 	 */
1541dedbd3bSFrançois Tigeot 	unsigned int offsets[4];
1551dedbd3bSFrançois Tigeot 	/**
1564be47400SFrançois Tigeot 	 * @modifier: Data layout modifier. This is used to describe
1571dedbd3bSFrançois Tigeot 	 * tiling, or also special layouts (like compression) of auxiliary
1581dedbd3bSFrançois Tigeot 	 * buffers. For userspace created object this is copied from
1591dedbd3bSFrançois Tigeot 	 * drm_mode_fb_cmd2.
1601dedbd3bSFrançois Tigeot 	 */
1614be47400SFrançois Tigeot 	uint64_t modifier;
1621dedbd3bSFrançois Tigeot 	/**
1631dedbd3bSFrançois Tigeot 	 * @width: Logical width of the visible area of the framebuffer, in
1641dedbd3bSFrançois Tigeot 	 * pixels.
1651dedbd3bSFrançois Tigeot 	 */
1661dedbd3bSFrançois Tigeot 	unsigned int width;
1671dedbd3bSFrançois Tigeot 	/**
1681dedbd3bSFrançois Tigeot 	 * @height: Logical height of the visible area of the framebuffer, in
1691dedbd3bSFrançois Tigeot 	 * pixels.
1701dedbd3bSFrançois Tigeot 	 */
1711dedbd3bSFrançois Tigeot 	unsigned int height;
1721dedbd3bSFrançois Tigeot 	/**
1731dedbd3bSFrançois Tigeot 	 * @flags: Framebuffer flags like DRM_MODE_FB_INTERLACED or
1741dedbd3bSFrançois Tigeot 	 * DRM_MODE_FB_MODIFIERS.
1751dedbd3bSFrançois Tigeot 	 */
1761dedbd3bSFrançois Tigeot 	int flags;
1771dedbd3bSFrançois Tigeot 	/**
1781dedbd3bSFrançois Tigeot 	 * @hot_x: X coordinate of the cursor hotspot. Used by the legacy cursor
1791dedbd3bSFrançois Tigeot 	 * IOCTL when the driver supports cursor through a DRM_PLANE_TYPE_CURSOR
1801dedbd3bSFrançois Tigeot 	 * universal plane.
1811dedbd3bSFrançois Tigeot 	 */
1821dedbd3bSFrançois Tigeot 	int hot_x;
1831dedbd3bSFrançois Tigeot 	/**
1841dedbd3bSFrançois Tigeot 	 * @hot_y: Y coordinate of the cursor hotspot. Used by the legacy cursor
1851dedbd3bSFrançois Tigeot 	 * IOCTL when the driver supports cursor through a DRM_PLANE_TYPE_CURSOR
1861dedbd3bSFrançois Tigeot 	 * universal plane.
1871dedbd3bSFrançois Tigeot 	 */
1881dedbd3bSFrançois Tigeot 	int hot_y;
1891dedbd3bSFrançois Tigeot 	/**
190a85cb24fSFrançois Tigeot 	 * @filp_head: Placed on &drm_file.fbs, protected by &drm_file.fbs_lock.
1911dedbd3bSFrançois Tigeot 	 */
1921dedbd3bSFrançois Tigeot 	struct list_head filp_head;
193*3f2dd94aSFrançois Tigeot 	/**
194*3f2dd94aSFrançois Tigeot 	 * @obj: GEM objects backing the framebuffer, one per plane (optional).
195*3f2dd94aSFrançois Tigeot 	 *
196*3f2dd94aSFrançois Tigeot 	 * This is used by the GEM framebuffer helpers, see e.g.
197*3f2dd94aSFrançois Tigeot 	 * drm_gem_fb_create().
198*3f2dd94aSFrançois Tigeot 	 */
199*3f2dd94aSFrançois Tigeot 	struct drm_gem_object *obj[4];
2001dedbd3bSFrançois Tigeot };
2011dedbd3bSFrançois Tigeot 
2021dedbd3bSFrançois Tigeot #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
2031dedbd3bSFrançois Tigeot 
2041dedbd3bSFrançois Tigeot int drm_framebuffer_init(struct drm_device *dev,
2051dedbd3bSFrançois Tigeot 			 struct drm_framebuffer *fb,
2061dedbd3bSFrançois Tigeot 			 const struct drm_framebuffer_funcs *funcs);
2071dedbd3bSFrançois Tigeot struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
208*3f2dd94aSFrançois Tigeot 					       struct drm_file *file_priv,
2091dedbd3bSFrançois Tigeot 					       uint32_t id);
2101dedbd3bSFrançois Tigeot void drm_framebuffer_remove(struct drm_framebuffer *fb);
2111dedbd3bSFrançois Tigeot void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
2121dedbd3bSFrançois Tigeot void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
2131dedbd3bSFrançois Tigeot 
2141dedbd3bSFrançois Tigeot /**
215a85cb24fSFrançois Tigeot  * drm_framebuffer_get - acquire a framebuffer reference
216a85cb24fSFrançois Tigeot  * @fb: DRM framebuffer
2171dedbd3bSFrançois Tigeot  *
218a85cb24fSFrançois Tigeot  * This function increments the framebuffer's reference count.
2191dedbd3bSFrançois Tigeot  */
drm_framebuffer_get(struct drm_framebuffer * fb)220a85cb24fSFrançois Tigeot static inline void drm_framebuffer_get(struct drm_framebuffer *fb)
2211dedbd3bSFrançois Tigeot {
222a85cb24fSFrançois Tigeot 	drm_mode_object_get(&fb->base);
2231dedbd3bSFrançois Tigeot }
2241dedbd3bSFrançois Tigeot 
2251dedbd3bSFrançois Tigeot /**
226a85cb24fSFrançois Tigeot  * drm_framebuffer_put - release a framebuffer reference
227a85cb24fSFrançois Tigeot  * @fb: DRM framebuffer
2281dedbd3bSFrançois Tigeot  *
229a85cb24fSFrançois Tigeot  * This function decrements the framebuffer's reference count and frees the
230a85cb24fSFrançois Tigeot  * framebuffer if the reference count drops to zero.
231a85cb24fSFrançois Tigeot  */
drm_framebuffer_put(struct drm_framebuffer * fb)232a85cb24fSFrançois Tigeot static inline void drm_framebuffer_put(struct drm_framebuffer *fb)
233a85cb24fSFrançois Tigeot {
234a85cb24fSFrançois Tigeot 	drm_mode_object_put(&fb->base);
235a85cb24fSFrançois Tigeot }
236a85cb24fSFrançois Tigeot 
237a85cb24fSFrançois Tigeot /**
238a85cb24fSFrançois Tigeot  * drm_framebuffer_reference - acquire a framebuffer reference
239a85cb24fSFrançois Tigeot  * @fb: DRM framebuffer
240a85cb24fSFrançois Tigeot  *
241a85cb24fSFrançois Tigeot  * This is a compatibility alias for drm_framebuffer_get() and should not be
242a85cb24fSFrançois Tigeot  * used by new code.
243a85cb24fSFrançois Tigeot  */
drm_framebuffer_reference(struct drm_framebuffer * fb)244a85cb24fSFrançois Tigeot static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
245a85cb24fSFrançois Tigeot {
246a85cb24fSFrançois Tigeot 	drm_framebuffer_get(fb);
247a85cb24fSFrançois Tigeot }
248a85cb24fSFrançois Tigeot 
249a85cb24fSFrançois Tigeot /**
250a85cb24fSFrançois Tigeot  * drm_framebuffer_unreference - release a framebuffer reference
251a85cb24fSFrançois Tigeot  * @fb: DRM framebuffer
252a85cb24fSFrançois Tigeot  *
253a85cb24fSFrançois Tigeot  * This is a compatibility alias for drm_framebuffer_put() and should not be
254a85cb24fSFrançois Tigeot  * used by new code.
2551dedbd3bSFrançois Tigeot  */
drm_framebuffer_unreference(struct drm_framebuffer * fb)2561dedbd3bSFrançois Tigeot static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
2571dedbd3bSFrançois Tigeot {
258a85cb24fSFrançois Tigeot 	drm_framebuffer_put(fb);
2591dedbd3bSFrançois Tigeot }
2601dedbd3bSFrançois Tigeot 
2611dedbd3bSFrançois Tigeot /**
2621dedbd3bSFrançois Tigeot  * drm_framebuffer_read_refcount - read the framebuffer reference count.
2631dedbd3bSFrançois Tigeot  * @fb: framebuffer
2641dedbd3bSFrançois Tigeot  *
2651dedbd3bSFrançois Tigeot  * This functions returns the framebuffer's reference count.
2661dedbd3bSFrançois Tigeot  */
drm_framebuffer_read_refcount(struct drm_framebuffer * fb)2671dedbd3bSFrançois Tigeot static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
2681dedbd3bSFrançois Tigeot {
269*3f2dd94aSFrançois Tigeot 	return kref_read(&fb->base.refcount);
2701dedbd3bSFrançois Tigeot }
2711dedbd3bSFrançois Tigeot 
2721dedbd3bSFrançois Tigeot /**
2734be47400SFrançois Tigeot  * drm_framebuffer_assign - store a reference to the fb
2744be47400SFrançois Tigeot  * @p: location to store framebuffer
2754be47400SFrançois Tigeot  * @fb: new framebuffer (maybe NULL)
2764be47400SFrançois Tigeot  *
2774be47400SFrançois Tigeot  * This functions sets the location to store a reference to the framebuffer,
2784be47400SFrançois Tigeot  * unreferencing the framebuffer that was previously stored in that location.
2794be47400SFrançois Tigeot  */
drm_framebuffer_assign(struct drm_framebuffer ** p,struct drm_framebuffer * fb)2804be47400SFrançois Tigeot static inline void drm_framebuffer_assign(struct drm_framebuffer **p,
2814be47400SFrançois Tigeot 					  struct drm_framebuffer *fb)
2824be47400SFrançois Tigeot {
2834be47400SFrançois Tigeot 	if (fb)
284a85cb24fSFrançois Tigeot 		drm_framebuffer_get(fb);
2854be47400SFrançois Tigeot 	if (*p)
286a85cb24fSFrançois Tigeot 		drm_framebuffer_put(*p);
2874be47400SFrançois Tigeot 	*p = fb;
2884be47400SFrançois Tigeot }
2894be47400SFrançois Tigeot 
2904be47400SFrançois Tigeot /*
2911dedbd3bSFrançois Tigeot  * drm_for_each_fb - iterate over all framebuffers
2921dedbd3bSFrançois Tigeot  * @fb: the loop cursor
2931dedbd3bSFrançois Tigeot  * @dev: the DRM device
2941dedbd3bSFrançois Tigeot  *
295a85cb24fSFrançois Tigeot  * Iterate over all framebuffers of @dev. User must hold
296a85cb24fSFrançois Tigeot  * &drm_mode_config.fb_lock.
2971dedbd3bSFrançois Tigeot  */
2981dedbd3bSFrançois Tigeot #define drm_for_each_fb(fb, dev) \
2991dedbd3bSFrançois Tigeot 	for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)),		\
3001dedbd3bSFrançois Tigeot 	     fb = list_first_entry(&(dev)->mode_config.fb_list,	\
3011dedbd3bSFrançois Tigeot 					  struct drm_framebuffer, head);	\
3021dedbd3bSFrançois Tigeot 	     &fb->head != (&(dev)->mode_config.fb_list);			\
3031dedbd3bSFrançois Tigeot 	     fb = list_next_entry(fb, head))
304a85cb24fSFrançois Tigeot 
305a85cb24fSFrançois Tigeot int drm_framebuffer_plane_width(int width,
306a85cb24fSFrançois Tigeot 				const struct drm_framebuffer *fb, int plane);
307a85cb24fSFrançois Tigeot int drm_framebuffer_plane_height(int height,
308a85cb24fSFrançois Tigeot 				 const struct drm_framebuffer *fb, int plane);
309a85cb24fSFrançois Tigeot 
3101dedbd3bSFrançois Tigeot #endif
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