drm_fb_helper.h revision 282199 
1/*
2 * Copyright (c) 2006-2009 Red Hat Inc.
3 * Copyright (c) 2006-2008 Intel Corporation
4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
5 *
6 * DRM framebuffer helper functions
7 *
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
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
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission.  The copyright holders make no representations
15 * about the suitability of this software for any purpose.  It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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,
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
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 *      Dave Airlie <airlied@linux.ie>
28 *      Jesse Barnes <jesse.barnes@intel.com>
29 *
30 * $FreeBSD: stable/10/sys/dev/drm2/drm_fb_helper.h 282199 2015-04-28 19:35:05Z dumbbell $
31 */
32#ifndef DRM_FB_HELPER_H
33#define DRM_FB_HELPER_H
34
35struct drm_fb_helper;
36
37struct drm_fb_helper_crtc {
38	struct drm_mode_set mode_set;
39	struct drm_display_mode *desired_mode;
40};
41
42struct drm_fb_helper_surface_size {
43	u32 fb_width;
44	u32 fb_height;
45	u32 surface_width;
46	u32 surface_height;
47	u32 surface_bpp;
48	u32 surface_depth;
49};
50
51struct drm_fb_helper_funcs {
52	void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
53			  u16 blue, int regno);
54	void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
55			  u16 *blue, int regno);
56
57	int (*fb_probe)(struct drm_fb_helper *helper,
58			struct drm_fb_helper_surface_size *sizes);
59};
60
61struct drm_fb_helper_connector {
62	struct drm_connector *connector;
63	struct drm_cmdline_mode cmdline_mode;
64};
65
66struct drm_fb_helper {
67	struct drm_framebuffer *fb;
68	struct drm_framebuffer *saved_fb;
69	struct drm_device *dev;
70	struct drm_display_mode *mode;
71	int crtc_count;
72	struct drm_fb_helper_crtc *crtc_info;
73	int connector_count;
74	struct drm_fb_helper_connector **connector_info;
75	struct drm_fb_helper_funcs *funcs;
76	struct fb_info *fbdev;
77	u32 pseudo_palette[17];
78	struct list_head kernel_fb_list;
79
80	/* we got a hotplug but fbdev wasn't running the console
81	   delay until next set_par */
82	bool delayed_hotplug;
83};
84
85int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
86				  int preferred_bpp);
87
88int drm_fb_helper_init(struct drm_device *dev,
89		       struct drm_fb_helper *helper, int crtc_count,
90		       int max_conn);
91void drm_fb_helper_fini(struct drm_fb_helper *helper);
92int drm_fb_helper_blank(int blank, struct fb_info *info);
93#ifdef FREEBSD_NOTYET
94int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
95			      struct fb_info *info);
96#endif /* FREEBSD_NOTYET */
97int drm_fb_helper_set_par(struct fb_info *info);
98#ifdef FREEBSD_NOTYET
99int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
100			    struct fb_info *info);
101#endif /* FREEBSD_NOTYET */
102int drm_fb_helper_setcolreg(unsigned regno,
103			    unsigned red,
104			    unsigned green,
105			    unsigned blue,
106			    unsigned transp,
107			    struct fb_info *info);
108
109bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
110void drm_fb_helper_restore(void);
111void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
112			    uint32_t fb_width, uint32_t fb_height);
113void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
114			    uint32_t depth);
115
116#ifdef FREEBSD_NOTYET
117int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
118#endif /* FREEBSD_NOTYET */
119
120int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
121bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
122int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
123int drm_fb_helper_debug_enter(struct fb_info *info);
124int drm_fb_helper_debug_leave(struct fb_info *info);
125
126#endif
127