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-rw-r--r--include/drm/drm_fb_helper.h82
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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
33struct drm_fb_helper_crtc {
34 uint32_t crtc_id;
35 struct drm_mode_set mode_set;
36};
37
38struct drm_fb_helper_funcs {
39 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
40 u16 blue, int regno);
41};
42
43struct drm_fb_helper {
44 struct drm_framebuffer *fb;
45 struct drm_device *dev;
46 struct drm_display_mode *mode;
47 int crtc_count;
48 struct drm_fb_helper_crtc *crtc_info;
49 struct drm_fb_helper_funcs *funcs;
50 int conn_limit;
51 struct list_head kernel_fb_list;
52};
53
54int drm_fb_helper_single_fb_probe(struct drm_device *dev,
55 int (*fb_create)(struct drm_device *dev,
56 uint32_t fb_width,
57 uint32_t fb_height,
58 uint32_t surface_width,
59 uint32_t surface_height,
60 struct drm_framebuffer **fb_ptr));
61int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count,
62 int max_conn);
63void drm_fb_helper_free(struct drm_fb_helper *helper);
64int drm_fb_helper_blank(int blank, struct fb_info *info);
65int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
66 struct fb_info *info);
67int drm_fb_helper_set_par(struct fb_info *info);
68int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
69 struct fb_info *info);
70int drm_fb_helper_setcolreg(unsigned regno,
71 unsigned red,
72 unsigned green,
73 unsigned blue,
74 unsigned transp,
75 struct fb_info *info);
76
77void drm_fb_helper_restore(void);
78void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb,
79 uint32_t fb_width, uint32_t fb_height);
80void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch);
81
82#endif