drm/fbdev: rework output polling to be back in the core. (v4)
[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 struct drm_fb_helper_crtc {
36         uint32_t crtc_id;
37         struct drm_mode_set mode_set;
38         struct drm_display_mode *desired_mode;
39 };
40
41 /* mode specified on the command line */
42 struct drm_fb_helper_cmdline_mode {
43         bool specified;
44         bool refresh_specified;
45         bool bpp_specified;
46         int xres, yres;
47         int bpp;
48         int refresh;
49         bool rb;
50         bool interlace;
51         bool cvt;
52         bool margins;
53 };
54
55 struct drm_fb_helper_surface_size {
56         u32 fb_width;
57         u32 fb_height;
58         u32 surface_width;
59         u32 surface_height;
60         u32 surface_bpp;
61         u32 surface_depth;
62 };
63
64 struct drm_fb_helper_funcs {
65         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
66                           u16 blue, int regno);
67         void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
68                           u16 *blue, int regno);
69
70         int (*fb_probe)(struct drm_fb_helper *helper,
71                         struct drm_fb_helper_surface_size *sizes);
72 };
73
74 struct drm_fb_helper_connector {
75         struct drm_fb_helper_cmdline_mode cmdline_mode;
76         struct drm_connector *connector;
77 };
78
79 struct drm_fb_helper {
80         struct drm_framebuffer *fb;
81         struct drm_device *dev;
82         struct drm_display_mode *mode;
83         int crtc_count;
84         struct drm_fb_helper_crtc *crtc_info;
85         int connector_count;
86         struct drm_fb_helper_connector **connector_info;
87         struct drm_fb_helper_funcs *funcs;
88         int conn_limit;
89         struct fb_info *fbdev;
90         u32 pseudo_palette[17];
91         struct list_head kernel_fb_list;
92
93         /* we got a hotplug but fbdev wasn't running the console
94            delay until next set_par */
95         bool delayed_hotplug;
96 };
97
98 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
99                                   int preferred_bpp);
100
101 int drm_fb_helper_init(struct drm_device *dev,
102                        struct drm_fb_helper *helper, int crtc_count,
103                        int max_conn);
104 void drm_fb_helper_fini(struct drm_fb_helper *helper);
105 int drm_fb_helper_blank(int blank, struct fb_info *info);
106 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
107                               struct fb_info *info);
108 int drm_fb_helper_set_par(struct fb_info *info);
109 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
110                             struct fb_info *info);
111 int drm_fb_helper_setcolreg(unsigned regno,
112                             unsigned red,
113                             unsigned green,
114                             unsigned blue,
115                             unsigned transp,
116                             struct fb_info *info);
117
118 void drm_fb_helper_restore(void);
119 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
120                             uint32_t fb_width, uint32_t fb_height);
121 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
122                             uint32_t depth);
123
124 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
125
126 bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
127 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
128 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
129
130 #endif