tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
33struct drm_fb_helper;
34
35#include <linux/kgdb.h>
36
37struct drm_fb_helper_crtc {
38 uint32_t crtc_id;
39 struct drm_mode_set mode_set;
40 struct drm_display_mode *desired_mode;
41};
42
43struct drm_fb_helper_surface_size {
44 u32 fb_width;
45 u32 fb_height;
46 u32 surface_width;
47 u32 surface_height;
48 u32 surface_bpp;
49 u32 surface_depth;
50};
51
52struct drm_fb_helper_funcs {
53 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
54 u16 blue, int regno);
55 void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
56 u16 *blue, int regno);
57
58 int (*fb_probe)(struct drm_fb_helper *helper,
59 struct drm_fb_helper_surface_size *sizes);
60};
61
62struct drm_fb_helper_connector {
63 struct drm_connector *connector;
64 struct drm_cmdline_mode cmdline_mode;
65};
66
67struct drm_fb_helper {
68 struct drm_framebuffer *fb;
69 struct drm_framebuffer *saved_fb;
70 struct drm_device *dev;
71 struct drm_display_mode *mode;
72 int crtc_count;
73 struct drm_fb_helper_crtc *crtc_info;
74 int connector_count;
75 struct drm_fb_helper_connector **connector_info;
76 struct drm_fb_helper_funcs *funcs;
77 int conn_limit;
78 struct fb_info *fbdev;
79 u32 pseudo_palette[17];
80 struct list_head kernel_fb_list;
81
82 /* we got a hotplug but fbdev wasn't running the console
83 delay until next set_par */
84 bool delayed_hotplug;
85};
86
87int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
88 int preferred_bpp);
89
90int drm_fb_helper_init(struct drm_device *dev,
91 struct drm_fb_helper *helper, int crtc_count,
92 int max_conn);
93void drm_fb_helper_fini(struct drm_fb_helper *helper);
94int drm_fb_helper_blank(int blank, struct fb_info *info);
95int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
96 struct fb_info *info);
97int drm_fb_helper_set_par(struct fb_info *info);
98int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
99 struct fb_info *info);
100int drm_fb_helper_setcolreg(unsigned regno,
101 unsigned red,
102 unsigned green,
103 unsigned blue,
104 unsigned transp,
105 struct fb_info *info);
106
107bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
108void drm_fb_helper_restore(void);
109void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
110 uint32_t fb_width, uint32_t fb_height);
111void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
112 uint32_t depth);
113
114int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
115
116int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
117bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
118int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
119int drm_fb_helper_debug_enter(struct fb_info *info);
120int drm_fb_helper_debug_leave(struct fb_info *info);
121
122#endif