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 #include <linux/slow-work.h>
  34
  35 struct drm_fb_helper_crtc {
  36         uint32_t crtc_id;
  37         struct drm_mode_set mode_set;
  38         struct drm_display_mode *desired_mode;
  39 };
  40
  41
  42 struct drm_fb_helper_funcs {
  43         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
  44                           u16 blue, int regno);
  45         void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
  46                           u16 *blue, int regno);
  47 };
  48
  49 /* mode specified on the command line */
  50 struct drm_fb_helper_cmdline_mode {
  51         bool specified;
  52         bool refresh_specified;
  53         bool bpp_specified;
  54         int xres, yres;
  55         int bpp;
  56         int refresh;
  57         bool rb;
  58         bool interlace;
  59         bool cvt;
  60         bool margins;
  61 };
  62
  63 struct drm_fb_helper_surface_size {
  64         u32 fb_width;
  65         u32 fb_height;
  66         u32 surface_width;
  67         u32 surface_height;
  68         u32 surface_bpp;
  69         u32 surface_depth;
  70 };
  71
  72 struct drm_fb_helper_connector {
  73         struct drm_fb_helper_cmdline_mode cmdline_mode;
  74         struct drm_connector *connector;
  75 };
  76
  77 struct drm_fb_helper {
  78         struct drm_framebuffer *fb;
  79         struct drm_device *dev;
  80         struct drm_display_mode *mode;
  81         int crtc_count;
  82         struct drm_fb_helper_crtc *crtc_info;
  83         int connector_count;
  84         struct drm_fb_helper_connector **connector_info;
  85         struct drm_fb_helper_funcs *funcs;
  86         int conn_limit;
  87         struct fb_info *fbdev;
  88         u32 pseudo_palette[17];
  89         struct list_head kernel_fb_list;
  90
  91         struct delayed_slow_work output_poll_slow_work;
  92         bool poll_enabled;
  93         int (*fb_probe)(struct drm_fb_helper *helper,
  94                         struct drm_fb_helper_surface_size *sizes);
  95
  96         void (*fb_poll_changed)(struct drm_fb_helper *helper);
  97 };
  98
  99 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
 100                                   int preferred_bpp);
 101
 102 int drm_fb_helper_init_crtc_count(struct drm_device *dev,
 103                                   struct drm_fb_helper *helper, int crtc_count,
 104                                   int max_conn);
 105 void drm_fb_helper_free(struct drm_fb_helper *helper);
 106 int drm_fb_helper_blank(int blank, struct fb_info *info);
 107 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 108                               struct fb_info *info);
 109 int drm_fb_helper_set_par(struct fb_info *info);
 110 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 111                             struct fb_info *info);
 112 int drm_fb_helper_setcolreg(unsigned regno,
 113                             unsigned red,
 114                             unsigned green,
 115                             unsigned blue,
 116                             unsigned transp,
 117                             struct fb_info *info);
 118
 119 void drm_fb_helper_restore(void);
 120 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
 121                             uint32_t fb_width, uint32_t fb_height);
 122 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 123                             uint32_t depth);
 124
 125 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 126
 127 bool drm_helper_fb_hotplug_event(struct drm_fb_helper *fb_helper,
 128                                  u32 max_width, u32 max_height, bool polled);
 129 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper);
 130 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
 131
 132 void drm_fb_helper_poll_init(struct drm_fb_helper *fb_helper);
 133 void drm_fb_helper_poll_fini(struct drm_fb_helper *fb_helper);
 134 #endif