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_crtc {
  34         uint32_t crtc_id;
  35         struct drm_mode_set mode_set;
  36         struct drm_display_mode *desired_mode;
  37 };
  38
  39
  40 struct drm_fb_helper_funcs {
  41         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
  42                           u16 blue, int regno);
  43         void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
  44                           u16 *blue, int regno);
  45 };
  46
  47 /* mode specified on the command line */
  48 struct drm_fb_helper_cmdline_mode {
  49         bool specified;
  50         bool refresh_specified;
  51         bool bpp_specified;
  52         int xres, yres;
  53         int bpp;
  54         int refresh;
  55         bool rb;
  56         bool interlace;
  57         bool cvt;
  58         bool margins;
  59 };
  60
  61 struct drm_fb_helper_surface_size {
  62         u32 fb_width;
  63         u32 fb_height;
  64         u32 surface_width;
  65         u32 surface_height;
  66         u32 surface_bpp;
  67         u32 surface_depth;
  68 };
  69
  70 struct drm_fb_helper_connector {
  71         struct drm_fb_helper_cmdline_mode cmdline_mode;
  72         struct drm_connector *connector;
  73 };
  74
  75 struct drm_fb_helper {
  76         struct drm_framebuffer *fb;
  77         struct drm_device *dev;
  78         struct drm_display_mode *mode;
  79         int crtc_count;
  80         struct drm_fb_helper_crtc *crtc_info;
  81         int connector_count;
  82         struct drm_fb_helper_connector **connector_info;
  83         struct drm_fb_helper_funcs *funcs;
  84         int conn_limit;
  85         struct fb_info *fbdev;
  86         u32 pseudo_palette[17];
  87         struct list_head kernel_fb_list;
  88
  89         int (*fb_probe)(struct drm_fb_helper *helper,
  90                         struct drm_fb_helper_surface_size *sizes);
  91 };
  92
  93 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
  94                                   int preferred_bpp);
  95
  96 int drm_fb_helper_init_crtc_count(struct drm_device *dev,
  97                                   struct drm_fb_helper *helper, int crtc_count,
  98                                   int max_conn);
  99 void drm_fb_helper_free(struct drm_fb_helper *helper);
 100 int drm_fb_helper_blank(int blank, struct fb_info *info);
 101 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 102                               struct fb_info *info);
 103 int drm_fb_helper_set_par(struct fb_info *info);
 104 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 105                             struct fb_info *info);
 106 int drm_fb_helper_setcolreg(unsigned regno,
 107                             unsigned red,
 108                             unsigned green,
 109                             unsigned blue,
 110                             unsigned transp,
 111                             struct fb_info *info);
 112
 113 void drm_fb_helper_restore(void);
 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,
 117                             uint32_t depth);
 118
 119 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 120
 121 bool drm_helper_fb_hotplug_event(struct drm_fb_helper *fb_helper, u32 max_width,
 122                                  u32 max_height);
 123 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper);
 124 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
 125
 126 #endif