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785b93ef DA |
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 | ||
4abe3520 DA |
33 | struct drm_fb_helper; |
34 | ||
1a7aba7f JB |
35 | #include <linux/kgdb.h> |
36 | ||
b0ee9e7f DA |
37 | struct drm_fb_offset { |
38 | int x, y; | |
39 | }; | |
40 | ||
785b93ef | 41 | struct drm_fb_helper_crtc { |
785b93ef | 42 | struct drm_mode_set mode_set; |
8be48d92 | 43 | struct drm_display_mode *desired_mode; |
b0ee9e7f | 44 | int x, y; |
785b93ef DA |
45 | }; |
46 | ||
38651674 DA |
47 | struct drm_fb_helper_surface_size { |
48 | u32 fb_width; | |
49 | u32 fb_height; | |
50 | u32 surface_width; | |
51 | u32 surface_height; | |
52 | u32 surface_bpp; | |
53 | u32 surface_depth; | |
54 | }; | |
55 | ||
207fd329 DV |
56 | /** |
57 | * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library | |
7b97936f VS |
58 | * @gamma_set: Set the given gamma lut register on the given crtc. |
59 | * @gamma_get: Read the given gamma lut register on the given crtc, used to | |
60 | * save the current lut when force-restoring the fbdev for e.g. | |
61 | * kdbg. | |
62 | * @fb_probe: Driver callback to allocate and initialize the fbdev info | |
e227867f | 63 | * structure. Furthermore it also needs to allocate the drm |
7b97936f VS |
64 | * framebuffer used to back the fbdev. |
65 | * @initial_config: Setup an initial fbdev display configuration | |
207fd329 DV |
66 | * |
67 | * Driver callbacks used by the fbdev emulation helper library. | |
68 | */ | |
4abe3520 DA |
69 | struct drm_fb_helper_funcs { |
70 | void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, | |
71 | u16 blue, int regno); | |
72 | void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green, | |
73 | u16 *blue, int regno); | |
74 | ||
75 | int (*fb_probe)(struct drm_fb_helper *helper, | |
76 | struct drm_fb_helper_surface_size *sizes); | |
11e17a08 JB |
77 | bool (*initial_config)(struct drm_fb_helper *fb_helper, |
78 | struct drm_fb_helper_crtc **crtcs, | |
79 | struct drm_display_mode **modes, | |
b0ee9e7f | 80 | struct drm_fb_offset *offsets, |
11e17a08 | 81 | bool *enabled, int width, int height); |
4abe3520 DA |
82 | }; |
83 | ||
d50ba256 | 84 | struct drm_fb_helper_connector { |
0b4c0f3f | 85 | struct drm_connector *connector; |
d50ba256 DA |
86 | }; |
87 | ||
785b93ef DA |
88 | struct drm_fb_helper { |
89 | struct drm_framebuffer *fb; | |
90 | struct drm_device *dev; | |
785b93ef DA |
91 | int crtc_count; |
92 | struct drm_fb_helper_crtc *crtc_info; | |
0b4c0f3f | 93 | int connector_count; |
65c2a89c | 94 | int connector_info_alloc_count; |
0b4c0f3f | 95 | struct drm_fb_helper_connector **connector_info; |
3a493879 | 96 | const struct drm_fb_helper_funcs *funcs; |
38651674 DA |
97 | struct fb_info *fbdev; |
98 | u32 pseudo_palette[17]; | |
785b93ef | 99 | struct list_head kernel_fb_list; |
8be48d92 | 100 | |
4abe3520 DA |
101 | /* we got a hotplug but fbdev wasn't running the console |
102 | delay until next set_par */ | |
103 | bool delayed_hotplug; | |
785b93ef DA |
104 | }; |
105 | ||
10a23102 TR |
106 | void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, |
107 | const struct drm_fb_helper_funcs *funcs); | |
4abe3520 DA |
108 | int drm_fb_helper_init(struct drm_device *dev, |
109 | struct drm_fb_helper *helper, int crtc_count, | |
eb1f8e4f | 110 | int max_conn); |
4abe3520 | 111 | void drm_fb_helper_fini(struct drm_fb_helper *helper); |
785b93ef DA |
112 | int drm_fb_helper_blank(int blank, struct fb_info *info); |
113 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
114 | struct fb_info *info); | |
115 | int drm_fb_helper_set_par(struct fb_info *info); | |
116 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, | |
117 | struct fb_info *info); | |
785b93ef | 118 | |
5ea1f752 | 119 | bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper); |
38651674 | 120 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef | 121 | uint32_t fb_width, uint32_t fb_height); |
3632ef89 DA |
122 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
123 | uint32_t depth); | |
124 | ||
068143d3 | 125 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); |
d50ba256 | 126 | |
7394371d | 127 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); |
4abe3520 | 128 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); |
0b4c0f3f | 129 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper); |
1a7aba7f JB |
130 | int drm_fb_helper_debug_enter(struct fb_info *info); |
131 | int drm_fb_helper_debug_leave(struct fb_info *info); | |
2f1046f3 JB |
132 | struct drm_display_mode * |
133 | drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, | |
134 | int width, int height); | |
135 | struct drm_display_mode * | |
136 | drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, | |
137 | int width, int height); | |
8be48d92 | 138 | |
65c2a89c DA |
139 | int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector); |
140 | int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper, | |
141 | struct drm_connector *connector); | |
785b93ef | 142 | #endif |