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1408 | serge | 1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. |
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3 | * Copyright (c) 2006-2008 Intel Corporation |
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4 | * Copyright (c) 2007 Dave Airlie |
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5 | * |
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6 | * DRM framebuffer helper functions |
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7 | * |
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8 | * Permission to use, copy, modify, distribute, and sell this software and its |
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9 | * documentation for any purpose is hereby granted without fee, provided that |
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10 | * the above copyright notice appear in all copies and that both that copyright |
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11 | * notice and this permission notice appear in supporting documentation, and |
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12 | * that the name of the copyright holders not be used in advertising or |
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13 | * publicity pertaining to distribution of the software without specific, |
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14 | * written prior permission. The copyright holders make no representations |
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15 | * about the suitability of this software for any purpose. It is provided "as |
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16 | * is" without express or implied warranty. |
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17 | * |
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18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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24 | * OF THIS SOFTWARE. |
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25 | * |
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26 | * Authors: |
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27 | * Dave Airlie |
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28 | * Jesse Barnes |
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29 | */ |
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30 | #ifndef DRM_FB_HELPER_H |
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31 | #define DRM_FB_HELPER_H |
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32 | |||
1964 | serge | 33 | struct drm_fb_helper; |
34 | |||
5056 | serge | 35 | #include |
1964 | serge | 36 | |
5270 | serge | 37 | struct drm_fb_offset { |
38 | int x, y; |
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39 | }; |
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40 | |||
1408 | serge | 41 | struct drm_fb_helper_crtc { |
42 | struct drm_mode_set mode_set; |
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1964 | serge | 43 | struct drm_display_mode *desired_mode; |
5270 | serge | 44 | int x, y; |
1408 | serge | 45 | }; |
46 | |||
1964 | serge | 47 | struct drm_fb_helper_surface_size { |
48 | u32 fb_width; |
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49 | u32 fb_height; |
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50 | u32 surface_width; |
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51 | u32 surface_height; |
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52 | u32 surface_bpp; |
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53 | u32 surface_depth; |
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54 | }; |
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1408 | serge | 55 | |
3391 | Serge | 56 | /** |
57 | * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library |
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3747 | Serge | 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 |
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3391 | Serge | 60 | * save the current lut when force-restoring the fbdev for e.g. |
61 | * kdbg. |
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3747 | Serge | 62 | * @fb_probe: Driver callback to allocate and initialize the fbdev info |
5056 | serge | 63 | * structure. Furthermore it also needs to allocate the drm |
3391 | Serge | 64 | * framebuffer used to back the fbdev. |
3747 | Serge | 65 | * @initial_config: Setup an initial fbdev display configuration |
3391 | Serge | 66 | * |
67 | * Driver callbacks used by the fbdev emulation helper library. |
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68 | */ |
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1408 | serge | 69 | struct drm_fb_helper_funcs { |
70 | void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, |
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71 | u16 blue, int regno); |
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72 | void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green, |
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73 | u16 *blue, int regno); |
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74 | |||
1964 | serge | 75 | int (*fb_probe)(struct drm_fb_helper *helper, |
76 | struct drm_fb_helper_surface_size *sizes); |
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3747 | Serge | 77 | bool (*initial_config)(struct drm_fb_helper *fb_helper, |
78 | struct drm_fb_helper_crtc **crtcs, |
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79 | struct drm_display_mode **modes, |
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5270 | serge | 80 | struct drm_fb_offset *offsets, |
3747 | Serge | 81 | bool *enabled, int width, int height); |
1408 | serge | 82 | }; |
83 | |||
84 | struct drm_fb_helper_connector { |
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1964 | serge | 85 | struct drm_connector *connector; |
1408 | serge | 86 | }; |
87 | |||
88 | struct drm_fb_helper { |
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89 | struct drm_framebuffer *fb; |
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90 | struct drm_device *dev; |
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91 | int crtc_count; |
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92 | struct drm_fb_helper_crtc *crtc_info; |
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1964 | serge | 93 | int connector_count; |
5056 | serge | 94 | int connector_info_alloc_count; |
1964 | serge | 95 | struct drm_fb_helper_connector **connector_info; |
5056 | serge | 96 | const struct drm_fb_helper_funcs *funcs; |
1964 | serge | 97 | struct fb_info *fbdev; |
98 | u32 pseudo_palette[17]; |
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1408 | serge | 99 | struct list_head kernel_fb_list; |
1964 | serge | 100 | |
101 | /* we got a hotplug but fbdev wasn't running the console |
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102 | delay until next set_par */ |
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103 | bool delayed_hotplug; |
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1408 | serge | 104 | }; |
105 | |||
5056 | serge | 106 | void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, |
107 | const struct drm_fb_helper_funcs *funcs); |
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1964 | serge | 108 | int drm_fb_helper_init(struct drm_device *dev, |
109 | struct drm_fb_helper *helper, int crtc_count, |
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1408 | serge | 110 | int max_conn); |
1964 | serge | 111 | void drm_fb_helper_fini(struct drm_fb_helper *helper); |
1408 | serge | 112 | int drm_fb_helper_blank(int blank, struct fb_info *info); |
113 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
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114 | struct fb_info *info); |
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115 | int drm_fb_helper_set_par(struct fb_info *info); |
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116 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
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117 | struct fb_info *info); |
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118 | |||
5056 | serge | 119 | bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper); |
1964 | serge | 120 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
1408 | serge | 121 | uint32_t fb_width, uint32_t fb_height); |
122 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
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123 | uint32_t depth); |
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124 | |||
125 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); |
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126 | |||
1964 | serge | 127 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); |
128 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); |
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129 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper); |
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130 | int drm_fb_helper_debug_enter(struct fb_info *info); |
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131 | int drm_fb_helper_debug_leave(struct fb_info *info); |
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5056 | serge | 132 | struct drm_display_mode * |
133 | drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, |
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134 | int width, int height); |
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135 | struct drm_display_mode * |
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136 | drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
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137 | int width, int height); |
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1964 | serge | 138 | |
5056 | serge | 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, |
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141 | struct drm_connector *connector); |
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1408 | serge | 142 | #endif |