ade09d7b427100da6057cb04c7e43d484c84ac25
[linux-2.6.git] / include / drm / drm_fb_helper.h
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 #ifndef DRM_FB_HELPER_H
31 #define DRM_FB_HELPER_H
32
33 struct drm_fb_helper;
34
35 #include <linux/kgdb.h>
36
37 struct drm_fb_helper_crtc {
38         uint32_t crtc_id;
39         struct drm_mode_set mode_set;
40         struct drm_display_mode *desired_mode;
41 };
42
43 /* mode specified on the command line */
44 struct drm_fb_helper_cmdline_mode {
45         bool specified;
46         bool refresh_specified;
47         bool bpp_specified;
48         int xres, yres;
49         int bpp;
50         int refresh;
51         bool rb;
52         bool interlace;
53         bool cvt;
54         bool margins;
55 };
56
57 struct drm_fb_helper_surface_size {
58         u32 fb_width;
59         u32 fb_height;
60         u32 surface_width;
61         u32 surface_height;
62         u32 surface_bpp;
63         u32 surface_depth;
64 };
65
66 struct drm_fb_helper_funcs {
67         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
68                           u16 blue, int regno);
69         void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
70                           u16 *blue, int regno);
71
72         int (*fb_probe)(struct drm_fb_helper *helper,
73                         struct drm_fb_helper_surface_size *sizes);
74 };
75
76 struct drm_fb_helper_connector {
77         struct drm_fb_helper_cmdline_mode cmdline_mode;
78         struct drm_connector *connector;
79 };
80
81 struct drm_fb_helper {
82         struct drm_framebuffer *fb;
83         struct drm_framebuffer *saved_fb;
84         struct drm_device *dev;
85         struct drm_display_mode *mode;
86         int crtc_count;
87         struct drm_fb_helper_crtc *crtc_info;
88         int connector_count;
89         struct drm_fb_helper_connector **connector_info;
90         struct drm_fb_helper_funcs *funcs;
91         int conn_limit;
92         struct fb_info *fbdev;
93         u32 pseudo_palette[17];
94         struct list_head kernel_fb_list;
95
96         /* we got a hotplug but fbdev wasn't running the console
97            delay until next set_par */
98         bool delayed_hotplug;
99 };
100
101 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
102                                   int preferred_bpp);
103
104 int drm_fb_helper_init(struct drm_device *dev,
105                        struct drm_fb_helper *helper, int crtc_count,
106                        int max_conn);
107 void drm_fb_helper_fini(struct drm_fb_helper *helper);
108 int drm_fb_helper_blank(int blank, struct fb_info *info);
109 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
110                               struct fb_info *info);
111 int drm_fb_helper_set_par(struct fb_info *info);
112 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
113                             struct fb_info *info);
114 int drm_fb_helper_setcolreg(unsigned regno,
115                             unsigned red,
116                             unsigned green,
117                             unsigned blue,
118                             unsigned transp,
119                             struct fb_info *info);
120
121 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
122 void drm_fb_helper_restore(void);
123 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
124                             uint32_t fb_width, uint32_t fb_height);
125 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
126                             uint32_t depth);
127
128 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
129
130 bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
131 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
132 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
133 int drm_fb_helper_debug_enter(struct fb_info *info);
134 int drm_fb_helper_debug_leave(struct fb_info *info);
135
136 #endif