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drm_fb_helper.h
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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  struct drm_mode_set mode_set;
39  struct drm_display_mode *desired_mode;
40 };
41 
42 struct 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 
51 struct 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 
61 struct drm_fb_helper_connector {
62  struct drm_connector *connector;
63  struct drm_cmdline_mode cmdline_mode;
64 };
65 
66 struct 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 
85 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
86  int preferred_bpp);
87 
88 int drm_fb_helper_init(struct drm_device *dev,
89  struct drm_fb_helper *helper, int crtc_count,
90  int max_conn);
91 void drm_fb_helper_fini(struct drm_fb_helper *helper);
92 int drm_fb_helper_blank(int blank, struct fb_info *info);
93 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
94  struct fb_info *info);
95 int drm_fb_helper_set_par(struct fb_info *info);
96 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
97  struct fb_info *info);
98 int drm_fb_helper_setcolreg(unsigned regno,
99  unsigned red,
100  unsigned green,
101  unsigned blue,
102  unsigned transp,
103  struct fb_info *info);
104 
105 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
106 void drm_fb_helper_restore(void);
107 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
108  uint32_t fb_width, uint32_t fb_height);
109 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
110  uint32_t depth);
111 
112 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
113 
114 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
115 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
116 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
117 int drm_fb_helper_debug_enter(struct fb_info *info);
118 int drm_fb_helper_debug_leave(struct fb_info *info);
119 
120 #endif
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