WebSVN – Kolibri OS – Diff – /drivers/include/drm/drm_fb_helper.h


/*
 * Copyright (c) 2006-2009 Red Hat Inc.
 * Copyright (c) 2006-2008 Intel Corporation
 * Copyright (c) 2007 Dave Airlie 
 *
 * DRM framebuffer helper functions
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 *
 * Authors:
 *      Dave Airlie 
 *      Jesse Barnes 
 */
#ifndef DRM_FB_HELPER_H
#define DRM_FB_HELPER_H
 
struct drm_fb_helper;
 
#include 
 
enum mode_set_atomic {
	LEAVE_ATOMIC_MODE_SET,
	ENTER_ATOMIC_MODE_SET,
};
 
struct drm_fb_offset {
	int x, y;
};
 
struct drm_fb_helper_crtc {
	struct drm_mode_set mode_set;
	struct drm_display_mode *desired_mode;
	int x, y;
};
 
/**
 * struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size
 * @fb_width: fbdev width
 * @fb_height: fbdev height
 * @surface_width: scanout buffer width
 * @surface_height: scanout buffer height
 * @surface_bpp: scanout buffer bpp
 * @surface_depth: scanout buffer depth
 *
 * Note that the scanout surface width/height may be larger than the fbdev
 * width/height.  In case of multiple displays, the scanout surface is sized
 * according to the largest width/height (so it is large enough for all CRTCs
 * to scanout).  But the fbdev width/height is sized to the minimum width/
 * height of all the displays.  This ensures that fbcon fits on the smallest
 * of the attached displays.
 *
 * So what is passed to drm_fb_helper_fill_var() should be fb_width/fb_height,
 * rather than the surface size.
 */
struct drm_fb_helper_surface_size {
	u32 fb_width;
	u32 fb_height;
	u32 surface_width;
	u32 surface_height;
	u32 surface_bpp;
	u32 surface_depth;
};
 
/**
 * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
 
 
 
 
 
 
 
 
 *
 * Driver callbacks used by the fbdev emulation helper library.
 */
struct drm_fb_helper_funcs {
	/**
	 * @gamma_set:
	 *
	 * Set the given gamma LUT register on the given CRTC.
	 *
	 * This callback is optional.
	 *
	 * FIXME:
	 *
	 * This callback is functionally redundant with the core gamma table
	 * support and simply exists because the fbdev hasn't yet been
	 * refactored to use the core gamma table interfaces.
	 */
	void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
			  u16 blue, int regno);
	/**
	 * @gamma_get:
	 *
	 * Read the given gamma LUT register on the given CRTC, used to save the
	 * current LUT when force-restoring the fbdev for e.g. kdbg.
	 *
	 * This callback is optional.
	 *
	 * FIXME:
	 *
	 * This callback is functionally redundant with the core gamma table
	 * support and simply exists because the fbdev hasn't yet been
	 * refactored to use the core gamma table interfaces.
	 */
	void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
			  u16 *blue, int regno);
 
	/**
	 * @fb_probe:
	 *
	 * Driver callback to allocate and initialize the fbdev info structure.
	 * Furthermore it also needs to allocate the DRM framebuffer used to
	 * back the fbdev.
	 *
	 * This callback is mandatory.
	 *
	 * RETURNS:
	 *
	 * The driver should return 0 on success and a negative error code on
	 * failure.
	 */
	int (*fb_probe)(struct drm_fb_helper *helper,
			struct drm_fb_helper_surface_size *sizes);
 
	/**
	 * @initial_config:
	 *
	 * Driver callback to setup an initial fbdev display configuration.
	 * Drivers can use this callback to tell the fbdev emulation what the
	 * preferred initial configuration is. This is useful to implement
	 * smooth booting where the fbdev (and subsequently all userspace) never
	 * changes the mode, but always inherits the existing configuration.
	 *
	 * This callback is optional.
	 *
	 * RETURNS:
	 *
	 * The driver should return true if a suitable initial configuration has
	 * been filled out and false when the fbdev helper should fall back to
	 * the default probing logic.
	 */
	bool (*initial_config)(struct drm_fb_helper *fb_helper,
			       struct drm_fb_helper_crtc **crtcs,
			       struct drm_display_mode **modes,
			       struct drm_fb_offset *offsets,
			       bool *enabled, int width, int height);
};
 
struct drm_fb_helper_connector {
	struct drm_connector *connector;
};
 
/**
 * struct drm_fb_helper - main structure to emulate fbdev on top of KMS
 * @fb:  Scanout framebuffer object
 * @dev:  DRM device
 * @crtc_count: number of possible CRTCs
 * @crtc_info: per-CRTC helper state (mode, x/y offset, etc)
 * @connector_count: number of connected connectors
 * @connector_info_alloc_count: size of connector_info
 * @connector_info: array of per-connector information
 * @funcs: driver callbacks for fb helper
 * @fbdev: emulated fbdev device info struct
 * @pseudo_palette: fake palette of 16 colors
 *
 * This is the main structure used by the fbdev helpers. Drivers supporting
 * fbdev emulation should embedded this into their overall driver structure.
 * Drivers must also fill out a struct &drm_fb_helper_funcs with a few
 * operations.
 */
struct drm_fb_helper {
	struct drm_framebuffer *fb;
	struct drm_device *dev;
	int crtc_count;
	struct drm_fb_helper_crtc *crtc_info;
	int connector_count;
	int connector_info_alloc_count;
	struct drm_fb_helper_connector **connector_info;
	const struct drm_fb_helper_funcs *funcs;
	struct fb_info *fbdev;
	u32 pseudo_palette[17];
 
	/**
	 * @kernel_fb_list:
	 *
	 * Entry on the global kernel_fb_helper_list, used for kgdb entry/exit.
	 */
	struct list_head kernel_fb_list;
 
	/**
	 * @delayed_hotplug:
	 *
	 * A hotplug was received while fbdev wasn't in control of the DRM
	 * device, i.e. another KMS master was active. The output configuration
	 * needs to be reprobe when fbdev is in control again.
	 */
	bool delayed_hotplug;
 
	/**
	 * @atomic:
	 *
	 * Use atomic updates for restore_fbdev_mode(), etc.  This defaults to
	 * true if driver has DRIVER_ATOMIC feature flag, but drivers can
	 * override it to true after drm_fb_helper_init() if they support atomic
	 * modeset but do not yet advertise DRIVER_ATOMIC (note that fb-helper
	 * does not require ASYNC commits).
	 */
	bool atomic;
};
 
#ifdef CONFIG_DRM_FBDEV_EMULATION
void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
			   const struct drm_fb_helper_funcs *funcs);
int drm_fb_helper_init(struct drm_device *dev,
		       struct drm_fb_helper *helper, int crtc_count,
		       int max_conn);
void drm_fb_helper_fini(struct drm_fb_helper *helper);
int drm_fb_helper_blank(int blank, struct fb_info *info);
int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
			      struct fb_info *info);
int drm_fb_helper_set_par(struct fb_info *info);
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
			    struct fb_info *info);
 
int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
 
struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper);
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
			    uint32_t fb_width, uint32_t fb_height);
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
			    uint32_t depth);
 
void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
 
ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
			       size_t count, loff_t *ppos);
ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
				size_t count, loff_t *ppos);
 
void drm_fb_helper_sys_fillrect(struct fb_info *info,
				const struct fb_fillrect *rect);
void drm_fb_helper_sys_copyarea(struct fb_info *info,
				const struct fb_copyarea *area);
void drm_fb_helper_sys_imageblit(struct fb_info *info,
				 const struct fb_image *image);
 
void drm_fb_helper_cfb_fillrect(struct fb_info *info,
				const struct fb_fillrect *rect);
void drm_fb_helper_cfb_copyarea(struct fb_info *info,
				const struct fb_copyarea *area);
void drm_fb_helper_cfb_imageblit(struct fb_info *info,
				 const struct fb_image *image);
 
void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state);
 
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 
int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
int drm_fb_helper_debug_enter(struct fb_info *info);
int drm_fb_helper_debug_leave(struct fb_info *info);
struct drm_display_mode *
drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
			int width, int height);
struct drm_display_mode *
drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
		      int width, int height);
 
int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector);
int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
				       struct drm_connector *connector);
#else
static inline void drm_fb_helper_prepare(struct drm_device *dev,
					struct drm_fb_helper *helper,
					const struct drm_fb_helper_funcs *funcs)
{
}
 
static inline int drm_fb_helper_init(struct drm_device *dev,
		       struct drm_fb_helper *helper, int crtc_count,
		       int max_conn)
{
	return 0;
}
 
static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)
{
}
 
static inline int drm_fb_helper_blank(int blank, struct fb_info *info)
{
	return 0;
}
 
static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
					    struct fb_info *info)
{
	return 0;
}
 
static inline int drm_fb_helper_set_par(struct fb_info *info)
{
	return 0;
}
 
static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
					  struct fb_info *info)
{
	return 0;
}
 
static inline int
drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
{
	return 0;
}
 
static inline struct fb_info *
drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
{
	return NULL;
}
 
static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
{
}
static inline void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper)
{
}
 
static inline void drm_fb_helper_fill_var(struct fb_info *info,
					  struct drm_fb_helper *fb_helper,
					  uint32_t fb_width, uint32_t fb_height)
{
}
 
static inline void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
					  uint32_t depth)
{
}
 
static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,
					struct fb_info *info)
{
	return 0;
}
 
static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
{
}
 
static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,
					     char __user *buf, size_t count,
					     loff_t *ppos)
{
	return -ENODEV;
}
 
static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,
					      const char __user *buf,
					      size_t count, loff_t *ppos)
{
	return -ENODEV;
}
 
static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,
					      const struct fb_fillrect *rect)
{
}
 
static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,
					      const struct fb_copyarea *area)
{
}
 
static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
					       const struct fb_image *image)
{
}
 
static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
					      const struct fb_fillrect *rect)
{
}
 
static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,
					      const struct fb_copyarea *area)
{
}
 
static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,
					       const struct fb_image *image)
{
}
 
static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
					     int state)
{
}
 
static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
{
	return 0;
}
 
static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,
					       int bpp_sel)
{
	return 0;
}
 
static inline int
drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
{
	return 0;
}
 
static inline int drm_fb_helper_debug_enter(struct fb_info *info)
{
	return 0;
}
 
static inline int drm_fb_helper_debug_leave(struct fb_info *info)
{
	return 0;
}
 
static inline struct drm_display_mode *
drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
		       int width, int height)
{
	return NULL;
}
 
static inline struct drm_display_mode *
drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
		      int width, int height)
{
	return NULL;
}
 
static inline int
drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
				struct drm_connector *connector)
{
	return 0;
}
 
static inline int
drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
				   struct drm_connector *connector)
{
	return 0;
}
#endif
#endif

Rev 6082	Rev 6936
1	/*	1	/*
2	* Copyright (c) 2006-2009 Red Hat Inc.	2	* Copyright (c) 2006-2009 Red Hat Inc.
3	* Copyright (c) 2006-2008 Intel Corporation	3	* Copyright (c) 2006-2008 Intel Corporation
4	* Copyright (c) 2007 Dave Airlie	4	* Copyright (c) 2007 Dave Airlie
5	*	5	*
6	* DRM framebuffer helper functions	6	* DRM framebuffer helper functions
7	*	7	*
8	* Permission to use, copy, modify, distribute, and sell this software and its	8	* Permission to use, copy, modify, distribute, and sell this software and its
9	* documentation for any purpose is hereby granted without fee, provided that	9	* documentation for any purpose is hereby granted without fee, provided that
10	* the above copyright notice appear in all copies and that both that copyright	10	* the above copyright notice appear in all copies and that both that copyright
11	* notice and this permission notice appear in supporting documentation, and	11	* notice and this permission notice appear in supporting documentation, and
12	* that the name of the copyright holders not be used in advertising or	12	* that the name of the copyright holders not be used in advertising or
13	* publicity pertaining to distribution of the software without specific,	13	* publicity pertaining to distribution of the software without specific,
14	* written prior permission. The copyright holders make no representations	14	* written prior permission. The copyright holders make no representations
15	* about the suitability of this software for any purpose. It is provided "as	15	* about the suitability of this software for any purpose. It is provided "as
16	* is" without express or implied warranty.	16	* is" without express or implied warranty.
17	*	17	*
18	* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,	18	* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO	19	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20	* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR	20	* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,	21	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22	* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER	22	* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23	* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE	23	* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24	* OF THIS SOFTWARE.	24	* OF THIS SOFTWARE.
25	*	25	*
26	* Authors:	26	* Authors:
27	* Dave Airlie	27	* Dave Airlie
28	* Jesse Barnes	28	* Jesse Barnes
29	*/	29	*/
30	#ifndef DRM_FB_HELPER_H	30	#ifndef DRM_FB_HELPER_H
31	#define DRM_FB_HELPER_H	31	#define DRM_FB_HELPER_H
32		32
33	struct drm_fb_helper;	33	struct drm_fb_helper;
34		34
35	#include	35	#include
-		36
-		37	enum mode_set_atomic {
-		38	LEAVE_ATOMIC_MODE_SET,
-		39	ENTER_ATOMIC_MODE_SET,
-		40	};
36		41
37	struct drm_fb_offset {	42	struct drm_fb_offset {
38	int x, y;	43	int x, y;
39	};	44	};
40		45
41	struct drm_fb_helper_crtc {	46	struct drm_fb_helper_crtc {
42	struct drm_mode_set mode_set;	47	struct drm_mode_set mode_set;
43	struct drm_display_mode *desired_mode;	48	struct drm_display_mode *desired_mode;
44	int x, y;	49	int x, y;
45	};	50	};
46		51
47	/**	52	/**
48	* struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size	53	* struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size
49	* @fb_width: fbdev width	54	* @fb_width: fbdev width
50	* @fb_height: fbdev height	55	* @fb_height: fbdev height
51	* @surface_width: scanout buffer width	56	* @surface_width: scanout buffer width
52	* @surface_height: scanout buffer height	57	* @surface_height: scanout buffer height
53	* @surface_bpp: scanout buffer bpp	58	* @surface_bpp: scanout buffer bpp
54	* @surface_depth: scanout buffer depth	59	* @surface_depth: scanout buffer depth
55	*	60	*
56	* Note that the scanout surface width/height may be larger than the fbdev	61	* Note that the scanout surface width/height may be larger than the fbdev
57	* width/height. In case of multiple displays, the scanout surface is sized	62	* width/height. In case of multiple displays, the scanout surface is sized
58	* according to the largest width/height (so it is large enough for all CRTCs	63	* according to the largest width/height (so it is large enough for all CRTCs
59	* to scanout). But the fbdev width/height is sized to the minimum width/	64	* to scanout). But the fbdev width/height is sized to the minimum width/
60	* height of all the displays. This ensures that fbcon fits on the smallest	65	* height of all the displays. This ensures that fbcon fits on the smallest
61	* of the attached displays.	66	* of the attached displays.
62	*	67	*
63	* So what is passed to drm_fb_helper_fill_var() should be fb_width/fb_height,	68	* So what is passed to drm_fb_helper_fill_var() should be fb_width/fb_height,
64	* rather than the surface size.	69	* rather than the surface size.
65	*/	70	*/
66	struct drm_fb_helper_surface_size {	71	struct drm_fb_helper_surface_size {
67	u32 fb_width;	72	u32 fb_width;
68	u32 fb_height;	73	u32 fb_height;
69	u32 surface_width;	74	u32 surface_width;
70	u32 surface_height;	75	u32 surface_height;
71	u32 surface_bpp;	76	u32 surface_bpp;
72	u32 surface_depth;	77	u32 surface_depth;
73	};	78	};
74		79
75	/**	80	/**
76	* struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library	81	* struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
77	* @gamma_set: Set the given gamma lut register on the given crtc.	-
78	* @gamma_get: Read the given gamma lut register on the given crtc, used to	-
79	* save the current lut when force-restoring the fbdev for e.g.	-
80	* kdbg.	-
81	* @fb_probe: Driver callback to allocate and initialize the fbdev info	-
82	* structure. Furthermore it also needs to allocate the drm	-
83	* framebuffer used to back the fbdev.	-
84	* @initial_config: Setup an initial fbdev display configuration	-
85	*	82	*
86	* Driver callbacks used by the fbdev emulation helper library.	83	* Driver callbacks used by the fbdev emulation helper library.
87	*/	84	*/
88	struct drm_fb_helper_funcs {	85	struct drm_fb_helper_funcs {
-		86	/**
-		87	* @gamma_set:
-		88	*
-		89	* Set the given gamma LUT register on the given CRTC.
-		90	*
-		91	* This callback is optional.
-		92	*
-		93	* FIXME:
-		94	*
-		95	* This callback is functionally redundant with the core gamma table
-		96	* support and simply exists because the fbdev hasn't yet been
-		97	* refactored to use the core gamma table interfaces.
-		98	*/
89	void (gamma_set)(struct drm_crtc crtc, u16 red, u16 green,	99	void (gamma_set)(struct drm_crtc crtc, u16 red, u16 green,
90	u16 blue, int regno);	100	u16 blue, int regno);
-		101	/**
-		102	* @gamma_get:
-		103	*
-		104	* Read the given gamma LUT register on the given CRTC, used to save the
-		105	* current LUT when force-restoring the fbdev for e.g. kdbg.
-		106	*
-		107	* This callback is optional.
-		108	*
-		109	* FIXME:
-		110	*
-		111	* This callback is functionally redundant with the core gamma table
-		112	* support and simply exists because the fbdev hasn't yet been
-		113	* refactored to use the core gamma table interfaces.
-		114	*/
91	void (gamma_get)(struct drm_crtc crtc, u16 red, u16 green,	115	void (gamma_get)(struct drm_crtc crtc, u16 red, u16 green,
92	u16 *blue, int regno);	116	u16 *blue, int regno);
-		117
-		118	/**
-		119	* @fb_probe:
-		120	*
-		121	* Driver callback to allocate and initialize the fbdev info structure.
-		122	* Furthermore it also needs to allocate the DRM framebuffer used to
-		123	* back the fbdev.
-		124	*
-		125	* This callback is mandatory.
-		126	*
-		127	* RETURNS:
-		128	*
-		129	* The driver should return 0 on success and a negative error code on
-		130	* failure.
93		131	*/
94	int (fb_probe)(struct drm_fb_helper helper,	132	int (fb_probe)(struct drm_fb_helper helper,
-		133	struct drm_fb_helper_surface_size *sizes);
-		134
-		135	/**
-		136	* @initial_config:
-		137	*
-		138	* Driver callback to setup an initial fbdev display configuration.
-		139	* Drivers can use this callback to tell the fbdev emulation what the
-		140	* preferred initial configuration is. This is useful to implement
-		141	* smooth booting where the fbdev (and subsequently all userspace) never
-		142	* changes the mode, but always inherits the existing configuration.
-		143	*
-		144	* This callback is optional.
-		145	*
-		146	* RETURNS:
-		147	*
-		148	* The driver should return true if a suitable initial configuration has
-		149	* been filled out and false when the fbdev helper should fall back to
-		150	* the default probing logic.
95	struct drm_fb_helper_surface_size *sizes);	151	*/
96	bool (initial_config)(struct drm_fb_helper fb_helper,	152	bool (initial_config)(struct drm_fb_helper fb_helper,
97	struct drm_fb_helper_crtc **crtcs,	153	struct drm_fb_helper_crtc **crtcs,
98	struct drm_display_mode **modes,	154	struct drm_display_mode **modes,
99	struct drm_fb_offset *offsets,	155	struct drm_fb_offset *offsets,
100	bool *enabled, int width, int height);	156	bool *enabled, int width, int height);
101	};	157	};
102		158
103	struct drm_fb_helper_connector {	159	struct drm_fb_helper_connector {
104	struct drm_connector *connector;	160	struct drm_connector *connector;
105	};	161	};
106		162
107	/**	163	/**
108	* struct drm_fb_helper - helper to emulate fbdev on top of kms	164	* struct drm_fb_helper - main structure to emulate fbdev on top of KMS
109	* @fb: Scanout framebuffer object	165	* @fb: Scanout framebuffer object
110	* @dev: DRM device	166	* @dev: DRM device
111	* @crtc_count: number of possible CRTCs	167	* @crtc_count: number of possible CRTCs
112	* @crtc_info: per-CRTC helper state (mode, x/y offset, etc)	168	* @crtc_info: per-CRTC helper state (mode, x/y offset, etc)
113	* @connector_count: number of connected connectors	169	* @connector_count: number of connected connectors
114	* @connector_info_alloc_count: size of connector_info	170	* @connector_info_alloc_count: size of connector_info
-		171	* @connector_info: array of per-connector information
115	* @funcs: driver callbacks for fb helper	172	* @funcs: driver callbacks for fb helper
116	* @fbdev: emulated fbdev device info struct	173	* @fbdev: emulated fbdev device info struct
117	* @pseudo_palette: fake palette of 16 colors	174	* @pseudo_palette: fake palette of 16 colors
-		175	*
118	* @kernel_fb_list: list_head in kernel_fb_helper_list	176	* This is the main structure used by the fbdev helpers. Drivers supporting
119	* @delayed_hotplug: was there a hotplug while kms master active?	177	* fbdev emulation should embedded this into their overall driver structure.
-		178	* Drivers must also fill out a struct &drm_fb_helper_funcs with a few
-		179	* operations.
120	*/	180	*/
121	struct drm_fb_helper {	181	struct drm_fb_helper {
122	struct drm_framebuffer *fb;	182	struct drm_framebuffer *fb;
123	struct drm_device *dev;	183	struct drm_device *dev;
124	int crtc_count;	184	int crtc_count;
125	struct drm_fb_helper_crtc *crtc_info;	185	struct drm_fb_helper_crtc *crtc_info;
126	int connector_count;	186	int connector_count;
127	int connector_info_alloc_count;	187	int connector_info_alloc_count;
128	struct drm_fb_helper_connector **connector_info;	188	struct drm_fb_helper_connector **connector_info;
129	const struct drm_fb_helper_funcs *funcs;	189	const struct drm_fb_helper_funcs *funcs;
130	struct fb_info *fbdev;	190	struct fb_info *fbdev;
131	u32 pseudo_palette[17];	191	u32 pseudo_palette[17];
-		192
-		193	/**
-		194	* @kernel_fb_list:
-		195	*
-		196	* Entry on the global kernel_fb_helper_list, used for kgdb entry/exit.
-		197	*/
132	struct list_head kernel_fb_list;	198	struct list_head kernel_fb_list;
-		199
-		200	/**
-		201	* @delayed_hotplug:
133		202	*
-		203	* A hotplug was received while fbdev wasn't in control of the DRM
134	/* we got a hotplug but fbdev wasn't running the console	204	* device, i.e. another KMS master was active. The output configuration
-		205	* needs to be reprobe when fbdev is in control again.
135	delay until next set_par */	206	*/
136	bool delayed_hotplug;	207	bool delayed_hotplug;
137		208
138	/**	209	/**
139	* @atomic:	210	* @atomic:
140	*	211	*
141	* Use atomic updates for restore_fbdev_mode(), etc. This defaults to	212	* Use atomic updates for restore_fbdev_mode(), etc. This defaults to
142	* true if driver has DRIVER_ATOMIC feature flag, but drivers can	213	* true if driver has DRIVER_ATOMIC feature flag, but drivers can
143	* override it to true after drm_fb_helper_init() if they support atomic	214	* override it to true after drm_fb_helper_init() if they support atomic
144	* modeset but do not yet advertise DRIVER_ATOMIC (note that fb-helper	215	* modeset but do not yet advertise DRIVER_ATOMIC (note that fb-helper
145	* does not require ASYNC commits).	216	* does not require ASYNC commits).
146	*/	217	*/
147	bool atomic;	218	bool atomic;
148	};	219	};
149		220
150	#ifdef CONFIG_DRM_FBDEV_EMULATION	221	#ifdef CONFIG_DRM_FBDEV_EMULATION
151	void drm_fb_helper_prepare(struct drm_device dev, struct drm_fb_helper helper,	222	void drm_fb_helper_prepare(struct drm_device dev, struct drm_fb_helper helper,
152	const struct drm_fb_helper_funcs *funcs);	223	const struct drm_fb_helper_funcs *funcs);
153	int drm_fb_helper_init(struct drm_device *dev,	224	int drm_fb_helper_init(struct drm_device *dev,
154	struct drm_fb_helper *helper, int crtc_count,	225	struct drm_fb_helper *helper, int crtc_count,
155	int max_conn);	226	int max_conn);
156	void drm_fb_helper_fini(struct drm_fb_helper *helper);	227	void drm_fb_helper_fini(struct drm_fb_helper *helper);
157	int drm_fb_helper_blank(int blank, struct fb_info *info);	228	int drm_fb_helper_blank(int blank, struct fb_info *info);
158	int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,	229	int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
159	struct fb_info *info);	230	struct fb_info *info);
160	int drm_fb_helper_set_par(struct fb_info *info);	231	int drm_fb_helper_set_par(struct fb_info *info);
161	int drm_fb_helper_check_var(struct fb_var_screeninfo *var,	232	int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
162	struct fb_info *info);	233	struct fb_info *info);
163		234
164	int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);	235	int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
165		236
166	struct fb_info drm_fb_helper_alloc_fbi(struct drm_fb_helper fb_helper);	237	struct fb_info drm_fb_helper_alloc_fbi(struct drm_fb_helper fb_helper);
167	void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);	238	void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
168	void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper);	239	void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper);
169	void drm_fb_helper_fill_var(struct fb_info info, struct drm_fb_helper fb_helper,	240	void drm_fb_helper_fill_var(struct fb_info info, struct drm_fb_helper fb_helper,
170	uint32_t fb_width, uint32_t fb_height);	241	uint32_t fb_width, uint32_t fb_height);
171	void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,	242	void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
172	uint32_t depth);	243	uint32_t depth);
173		244
174	void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);	245	void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
175		246
176	ssize_t drm_fb_helper_sys_read(struct fb_info info, char __user buf,	247	ssize_t drm_fb_helper_sys_read(struct fb_info info, char __user buf,
177	size_t count, loff_t *ppos);	248	size_t count, loff_t *ppos);
178	ssize_t drm_fb_helper_sys_write(struct fb_info info, const char __user buf,	249	ssize_t drm_fb_helper_sys_write(struct fb_info info, const char __user buf,
179	size_t count, loff_t *ppos);	250	size_t count, loff_t *ppos);
180		251
181	void drm_fb_helper_sys_fillrect(struct fb_info *info,	252	void drm_fb_helper_sys_fillrect(struct fb_info *info,
182	const struct fb_fillrect *rect);	253	const struct fb_fillrect *rect);
183	void drm_fb_helper_sys_copyarea(struct fb_info *info,	254	void drm_fb_helper_sys_copyarea(struct fb_info *info,
184	const struct fb_copyarea *area);	255	const struct fb_copyarea *area);
185	void drm_fb_helper_sys_imageblit(struct fb_info *info,	256	void drm_fb_helper_sys_imageblit(struct fb_info *info,
186	const struct fb_image *image);	257	const struct fb_image *image);
187		258
188	void drm_fb_helper_cfb_fillrect(struct fb_info *info,	259	void drm_fb_helper_cfb_fillrect(struct fb_info *info,
189	const struct fb_fillrect *rect);	260	const struct fb_fillrect *rect);
190	void drm_fb_helper_cfb_copyarea(struct fb_info *info,	261	void drm_fb_helper_cfb_copyarea(struct fb_info *info,
191	const struct fb_copyarea *area);	262	const struct fb_copyarea *area);
192	void drm_fb_helper_cfb_imageblit(struct fb_info *info,	263	void drm_fb_helper_cfb_imageblit(struct fb_info *info,
193	const struct fb_image *image);	264	const struct fb_image *image);
194		265
195	void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state);	266	void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state);
196		267
197	int drm_fb_helper_setcmap(struct fb_cmap cmap, struct fb_info info);	268	int drm_fb_helper_setcmap(struct fb_cmap cmap, struct fb_info info);
198		269
199	int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);	270	int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
200	int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);	271	int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
201	int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);	272	int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
202	int drm_fb_helper_debug_enter(struct fb_info *info);	273	int drm_fb_helper_debug_enter(struct fb_info *info);
203	int drm_fb_helper_debug_leave(struct fb_info *info);	274	int drm_fb_helper_debug_leave(struct fb_info *info);
204	struct drm_display_mode *	275	struct drm_display_mode *
205	drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,	276	drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
206	int width, int height);	277	int width, int height);
207	struct drm_display_mode *	278	struct drm_display_mode *
208	drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,	279	drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
209	int width, int height);	280	int width, int height);
210		281
211	int drm_fb_helper_add_one_connector(struct drm_fb_helper fb_helper, struct drm_connector connector);	282	int drm_fb_helper_add_one_connector(struct drm_fb_helper fb_helper, struct drm_connector connector);
212	int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,	283	int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
213	struct drm_connector *connector);	284	struct drm_connector *connector);
214	#else	285	#else
215	static inline void drm_fb_helper_prepare(struct drm_device *dev,	286	static inline void drm_fb_helper_prepare(struct drm_device *dev,
216	struct drm_fb_helper *helper,	287	struct drm_fb_helper *helper,
217	const struct drm_fb_helper_funcs *funcs)	288	const struct drm_fb_helper_funcs *funcs)
218	{	289	{
219	}	290	}
220		291
221	static inline int drm_fb_helper_init(struct drm_device *dev,	292	static inline int drm_fb_helper_init(struct drm_device *dev,
222	struct drm_fb_helper *helper, int crtc_count,	293	struct drm_fb_helper *helper, int crtc_count,
223	int max_conn)	294	int max_conn)
224	{	295	{
225	return 0;	296	return 0;
226	}	297	}
227		298
228	static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)	299	static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)
229	{	300	{
230	}	301	}
231		302
232	static inline int drm_fb_helper_blank(int blank, struct fb_info *info)	303	static inline int drm_fb_helper_blank(int blank, struct fb_info *info)
233	{	304	{
234	return 0;	305	return 0;
235	}	306	}
236		307
237	static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,	308	static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
238	struct fb_info *info)	309	struct fb_info *info)
239	{	310	{
240	return 0;	311	return 0;
241	}	312	}
242		313
243	static inline int drm_fb_helper_set_par(struct fb_info *info)	314	static inline int drm_fb_helper_set_par(struct fb_info *info)
244	{	315	{
245	return 0;	316	return 0;
246	}	317	}
247		318
248	static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,	319	static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
249	struct fb_info *info)	320	struct fb_info *info)
250	{	321	{
251	return 0;	322	return 0;
252	}	323	}
253		324
254	static inline int	325	static inline int
255	drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)	326	drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
256	{	327	{
257	return 0;	328	return 0;
258	}	329	}
259		330
260	static inline struct fb_info *	331	static inline struct fb_info *
261	drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)	332	drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
262	{	333	{
263	return NULL;	334	return NULL;
264	}	335	}
265		336
266	static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)	337	static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
267	{	338	{
268	}	339	}
269	static inline void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper)	340	static inline void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper)
270	{	341	{
271	}	342	}
272		343
273	static inline void drm_fb_helper_fill_var(struct fb_info *info,	344	static inline void drm_fb_helper_fill_var(struct fb_info *info,
274	struct drm_fb_helper *fb_helper,	345	struct drm_fb_helper *fb_helper,
275	uint32_t fb_width, uint32_t fb_height)	346	uint32_t fb_width, uint32_t fb_height)
276	{	347	{
277	}	348	}
278		349
279	static inline void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,	350	static inline void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
280	uint32_t depth)	351	uint32_t depth)
281	{	352	{
282	}	353	}
283		354
284	static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,	355	static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,
285	struct fb_info *info)	356	struct fb_info *info)
286	{	357	{
287	return 0;	358	return 0;
288	}	359	}
289		360
290	static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)	361	static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
291	{	362	{
292	}	363	}
293		364
294	static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,	365	static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,
295	char __user *buf, size_t count,	366	char __user *buf, size_t count,
296	loff_t *ppos)	367	loff_t *ppos)
297	{	368	{
298	return -ENODEV;	369	return -ENODEV;
299	}	370	}
300		371
301	static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,	372	static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,
302	const char __user *buf,	373	const char __user *buf,
303	size_t count, loff_t *ppos)	374	size_t count, loff_t *ppos)
304	{	375	{
305	return -ENODEV;	376	return -ENODEV;
306	}	377	}
307		378
308	static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,	379	static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,
309	const struct fb_fillrect *rect)	380	const struct fb_fillrect *rect)
310	{	381	{
311	}	382	}
312		383
313	static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,	384	static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,
314	const struct fb_copyarea *area)	385	const struct fb_copyarea *area)
315	{	386	{
316	}	387	}
317		388
318	static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,	389	static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
319	const struct fb_image *image)	390	const struct fb_image *image)
320	{	391	{
321	}	392	}
322		393
323	static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,	394	static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
324	const struct fb_fillrect *rect)	395	const struct fb_fillrect *rect)
325	{	396	{
326	}	397	}
327		398
328	static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,	399	static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,
329	const struct fb_copyarea *area)	400	const struct fb_copyarea *area)
330	{	401	{
331	}	402	}
332		403
333	static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,	404	static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,
334	const struct fb_image *image)	405	const struct fb_image *image)
335	{	406	{
336	}	407	}
337		408
338	static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,	409	static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
339	int state)	410	int state)
340	{	411	{
341	}	412	}
342		413
343	static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)	414	static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
344	{	415	{
345	return 0;	416	return 0;
346	}	417	}
347		418
348	static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,	419	static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,
349	int bpp_sel)	420	int bpp_sel)
350	{	421	{
351	return 0;	422	return 0;
352	}	423	}
353		424
354	static inline int	425	static inline int
355	drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)	426	drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
356	{	427	{
357	return 0;	428	return 0;
358	}	429	}
359		430
360	static inline int drm_fb_helper_debug_enter(struct fb_info *info)	431	static inline int drm_fb_helper_debug_enter(struct fb_info *info)
361	{	432	{
362	return 0;	433	return 0;
363	}	434	}
364		435
365	static inline int drm_fb_helper_debug_leave(struct fb_info *info)	436	static inline int drm_fb_helper_debug_leave(struct fb_info *info)
366	{	437	{
367	return 0;	438	return 0;
368	}	439	}
369		440
370	static inline struct drm_display_mode *	441	static inline struct drm_display_mode *
371	drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,	442	drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
372	int width, int height)	443	int width, int height)
373	{	444	{
374	return NULL;	445	return NULL;
375	}	446	}
376		447
377	static inline struct drm_display_mode *	448	static inline struct drm_display_mode *
378	drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,	449	drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
379	int width, int height)	450	int width, int height)
380	{	451	{
381	return NULL;	452	return NULL;
382	}	453	}
383		454
384	static inline int	455	static inline int
385	drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,	456	drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
386	struct drm_connector *connector)	457	struct drm_connector *connector)
387	{	458	{
388	return 0;	459	return 0;
389	}	460	}
390		461
391	static inline int	462	static inline int
392	drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,	463	drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
393	struct drm_connector *connector)	464	struct drm_connector *connector)
394	{	465	{
395	return 0;	466	return 0;
396	}	467	}
397	#endif	468	#endif
398	#endif	469	#endif

Subversion Repositories Kolibri OS

(root)/drivers/include/drm/drm_fb_helper.h – Rev 6082 → 6936