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      1 /*	$NetBSD: drm_client.h,v 1.2 2021/12/19 12:04:59 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _DRM_DRM_CLIENT_H_
     30 #define	_DRM_DRM_CLIENT_H_
     31 
     32 #include <linux/mutex.h>
     33 
     34 struct drm_client_buffer;
     35 struct drm_client_dev;
     36 struct drm_client_funcs;
     37 struct drm_device;
     38 struct drm_mode_set;
     39 
     40 struct drm_client_dev {
     41 	struct mutex			modeset_mutex;
     42 	struct drm_mode_set		*modesets;
     43 	struct drm_framebuffer		*fb;
     44 	struct drm_device		*dev;
     45 	const struct drm_client_funcs	*funcs;
     46 };
     47 
     48 struct drm_client_funcs {
     49 	struct module *owner;
     50 	void	(*unregister)(struct drm_client_dev *);
     51 	int	(*restore)(struct drm_client_dev *);
     52 	int	(*hotplug)(struct drm_client_dev *);
     53 };
     54 
     55 struct drm_client_buffer {
     56 	struct drm_framebuffer	*fb;
     57 };
     58 
     59 int	drm_client_init(struct drm_device *, struct drm_client_dev *,
     60 	    const char *, const struct drm_client_funcs *);
     61 void	drm_client_register(struct drm_client_dev *);
     62 void	drm_client_release(struct drm_client_dev *);
     63 
     64 void	drm_client_dev_hotplug(struct drm_device *);
     65 void	drm_client_dev_restore(struct drm_device *);
     66 void	drm_client_dev_unregister(struct drm_device *);
     67 
     68 struct drm_client_buffer *
     69 	drm_client_framebuffer_create(struct drm_client_dev *, u32, u32, u32);
     70 void	*drm_client_buffer_vmap(struct drm_client_buffer *);
     71 void	drm_client_buffer_vunmap(struct drm_client_buffer *);
     72 void	drm_client_framebuffer_delete(struct drm_client_buffer *);
     73 
     74 int	drm_client_modeset_create(struct drm_client_dev *);
     75 int	drm_client_modeset_probe(struct drm_client_dev *, unsigned, unsigned);
     76 bool	drm_client_rotation(struct drm_mode_set *, unsigned *);
     77 int	drm_client_modeset_commit_force(struct drm_client_dev *);
     78 int	drm_client_modeset_commit(struct drm_client_dev *);
     79 int	drm_client_modeset_dpms(struct drm_client_dev *, int);
     80 void	drm_client_modeset_free(struct drm_client_dev *);
     81 
     82 #define drm_client_for_each_modeset(MODESET, CLIENT)		   \
     83 	KASSERT(mutex_is_locked(&(CLIENT)->modeset_mutex));	   \
     84 	drm_client_for_each_modeset_unlocked(MODESET, CLIENT)
     85 
     86 #define drm_client_for_each_modeset_unlocked(MODESET, CLIENT)	   \
     87 	for ((MODESET) = (CLIENT)->modesets; (MODESET)->crtc; (MODESET)++)
     88 
     89 #define drm_client_for_each_connector_iter(CONNECTOR, ITER)		      \
     90 	drm_for_each_connector_iter(CONNECTOR, ITER)			      \
     91 		if ((CONNECTOR)->connector_type !=			      \
     92 		    DRM_MODE_CONNECTOR_WRITEBACK)
     93 
     94 #endif	/* _DRM_DRM_CLIENT_H_ */
     95