linux/include/drm/drm_fb_helper.h
<<
>>
Prefs
   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
  43/* mode specified on the command line */
  44struct drm_fb_helper_cmdline_mode {
  45        bool specified;
  46        bool refresh_specified;
  47        bool bpp_specified;
  48        int xres, yres;
  49        int bpp;
  50        int refresh;
  51        bool rb;
  52        bool interlace;
  53        bool cvt;
  54        bool margins;
  55};
  56
  57struct drm_fb_helper_surface_size {
  58        u32 fb_width;
  59        u32 fb_height;
  60        u32 surface_width;
  61        u32 surface_height;
  62        u32 surface_bpp;
  63        u32 surface_depth;
  64};
  65
  66struct drm_fb_helper_funcs {
  67        void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
  68                          u16 blue, int regno);
  69        void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
  70                          u16 *blue, int regno);
  71
  72        int (*fb_probe)(struct drm_fb_helper *helper,
  73                        struct drm_fb_helper_surface_size *sizes);
  74};
  75
  76struct drm_fb_helper_connector {
  77        struct drm_fb_helper_cmdline_mode cmdline_mode;
  78        struct drm_connector *connector;
  79};
  80
  81struct drm_fb_helper {
  82        struct drm_framebuffer *fb;
  83        struct drm_framebuffer *saved_fb;
  84        struct drm_device *dev;
  85        struct drm_display_mode *mode;
  86        int crtc_count;
  87        struct drm_fb_helper_crtc *crtc_info;
  88        int connector_count;
  89        struct drm_fb_helper_connector **connector_info;
  90        struct drm_fb_helper_funcs *funcs;
  91        int conn_limit;
  92        struct fb_info *fbdev;
  93        u32 pseudo_palette[17];
  94        struct list_head kernel_fb_list;
  95
  96        /* we got a hotplug but fbdev wasn't running the console
  97           delay until next set_par */
  98        bool delayed_hotplug;
  99};
 100
 101int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
 102                                  int preferred_bpp);
 103
 104int drm_fb_helper_init(struct drm_device *dev,
 105                       struct drm_fb_helper *helper, int crtc_count,
 106                       int max_conn);
 107void drm_fb_helper_fini(struct drm_fb_helper *helper);
 108int drm_fb_helper_blank(int blank, struct fb_info *info);
 109int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 110                              struct fb_info *info);
 111int drm_fb_helper_set_par(struct fb_info *info);
 112int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 113                            struct fb_info *info);
 114int drm_fb_helper_setcolreg(unsigned regno,
 115                            unsigned red,
 116                            unsigned green,
 117                            unsigned blue,
 118                            unsigned transp,
 119                            struct fb_info *info);
 120
 121void drm_fb_helper_restore(void);
 122void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
 123                            uint32_t fb_width, uint32_t fb_height);
 124void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 125                            uint32_t depth);
 126
 127int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 128
 129bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
 130bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
 131int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
 132int drm_fb_helper_debug_enter(struct fb_info *info);
 133int drm_fb_helper_debug_leave(struct fb_info *info);
 134
 135#endif
 136