include/drm/drm_fb_helper.h

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