drm/fb: fix fbdev object model + cleanup properly.
[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_crtc {
34         uint32_t crtc_id;
35         struct drm_mode_set mode_set;
36 };
37
38
39 struct drm_fb_helper_funcs {
40         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
41                           u16 blue, int regno);
42         void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
43                           u16 *blue, int regno);
44 };
45
46 /* mode specified on the command line */
47 struct drm_fb_helper_cmdline_mode {
48         bool specified;
49         bool refresh_specified;
50         bool bpp_specified;
51         int xres, yres;
52         int bpp;
53         int refresh;
54         bool rb;
55         bool interlace;
56         bool cvt;
57         bool margins;
58 };
59
60 struct drm_fb_helper_surface_size {
61         u32 fb_width;
62         u32 fb_height;
63         u32 surface_width;
64         u32 surface_height;
65         u32 surface_bpp;
66         u32 surface_depth;
67 };
68
69 struct drm_fb_helper_connector {
70         struct drm_fb_helper_cmdline_mode cmdline_mode;
71 };
72
73 struct drm_fb_helper {
74         struct drm_framebuffer *fb;
75         struct drm_device *dev;
76         struct drm_display_mode *mode;
77         int crtc_count;
78         struct drm_fb_helper_crtc *crtc_info;
79         struct drm_fb_helper_funcs *funcs;
80         int conn_limit;
81         struct fb_info *fbdev;
82         u32 pseudo_palette[17];
83         struct list_head kernel_fb_list;
84 };
85
86 int drm_fb_helper_single_fb_probe(struct drm_device *dev,
87                                   int preferred_bpp,
88                                   int (*fb_create)(struct drm_device *dev,
89                                                    struct drm_fb_helper_surface_size *sizes,
90                                                    struct drm_fb_helper **fb_ptr));
91 int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count,
92                                   int max_conn);
93 void drm_fb_helper_free(struct drm_fb_helper *helper);
94 int drm_fb_helper_blank(int blank, struct fb_info *info);
95 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
96                               struct fb_info *info);
97 int drm_fb_helper_set_par(struct fb_info *info);
98 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
99                             struct fb_info *info);
100 int drm_fb_helper_setcolreg(unsigned regno,
101                             unsigned red,
102                             unsigned green,
103                             unsigned blue,
104                             unsigned transp,
105                             struct fb_info *info);
106
107 void drm_fb_helper_restore(void);
108 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
109                             uint32_t fb_width, uint32_t fb_height);
110 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
111                             uint32_t depth);
112
113 int drm_fb_helper_add_connector(struct drm_connector *connector);
114 int drm_fb_helper_parse_command_line(struct drm_device *dev);
115 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
116
117 bool drm_helper_fb_hotplug_event(struct drm_device *dev);
118 bool drm_helper_initial_config(struct drm_device *dev);
119 #endif