2 * Copyright (c) 2006-2009 Red Hat Inc.
3 * Copyright (c) 2006-2008 Intel Corporation
4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
6 * DRM framebuffer helper functions
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.
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
27 * Dave Airlie <airlied@linux.ie>
28 * Jesse Barnes <jesse.barnes@intel.com>
30 #ifndef DRM_FB_HELPER_H
31 #define DRM_FB_HELPER_H
35 struct drm_fb_helper_crtc {
36 struct drm_mode_set mode_set;
37 struct drm_display_mode *desired_mode;
40 struct drm_fb_helper_surface_size {
50 * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
51 * @gamma_set: Set the given gamma lut register on the given crtc.
52 * @gamma_get: Read the given gamma lut register on the given crtc, used to
53 * save the current lut when force-restoring the fbdev for e.g.
55 * @fb_probe: Driver callback to allocate and initialize the fbdev info
56 * structure. Futhermore it also needs to allocate the drm
57 * framebuffer used to back the fbdev.
58 * @initial_config: Setup an initial fbdev display configuration
60 * Driver callbacks used by the fbdev emulation helper library.
62 struct drm_fb_helper_funcs {
63 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
65 void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
66 u16 *blue, int regno);
68 int (*fb_probe)(struct drm_fb_helper *helper,
69 struct drm_fb_helper_surface_size *sizes);
70 bool (*initial_config)(struct drm_fb_helper *fb_helper,
71 struct drm_fb_helper_crtc **crtcs,
72 struct drm_display_mode **modes,
73 bool *enabled, int width, int height);
76 struct drm_fb_helper_connector {
77 struct drm_connector *connector;
78 struct drm_cmdline_mode cmdline_mode;
81 struct drm_fb_helper {
82 struct drm_framebuffer *fb;
83 struct drm_device *dev;
85 struct drm_fb_helper_crtc *crtc_info;
87 struct drm_fb_helper_connector **connector_info;
88 struct drm_fb_helper_funcs *funcs;
89 struct task fb_mode_task;
90 struct fb_info *fbdev;
91 u32 pseudo_palette[17];
92 struct list_head kernel_fb_list;
94 /* we got a hotplug but fbdev wasn't running the console
95 delay until next set_par */
99 struct fb_var_screeninfo;
102 int drm_fb_helper_init(struct drm_device *dev,
103 struct drm_fb_helper *helper, int crtc_count,
105 void drm_fb_helper_fini(struct drm_fb_helper *helper);
106 int drm_fb_helper_blank(int blank, struct fb_info *info);
107 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
108 struct fb_info *info);
109 int drm_fb_helper_set_par(struct fb_info *info);
110 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
111 struct fb_info *info);
113 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
114 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
115 uint32_t fb_width, uint32_t fb_height);
116 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
119 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
121 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
122 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
123 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
124 int drm_fb_helper_debug_enter(struct fb_info *info);
125 int drm_fb_helper_debug_leave(struct fb_info *info);