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         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 */
  44 struct 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
  57 struct 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
  66 struct 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
  76 struct drm_fb_helper_connector {
  77         struct drm_fb_helper_cmdline_mode cmdline_mode;
  78         struct drm_connector *connector;
  79 };
  80
  81 struct 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
 101 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
 102                                   int preferred_bpp);
 103
 104 int drm_fb_helper_init(struct drm_device *dev,
 105                        struct drm_fb_helper *helper, int crtc_count,
 106                        int max_conn);
 107 void drm_fb_helper_fini(struct drm_fb_helper *helper);
 108 int drm_fb_helper_blank(int blank, struct fb_info *info);
 109 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 110                               struct fb_info *info);
 111 int drm_fb_helper_set_par(struct fb_info *info);
 112 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 113                             struct fb_info *info);
 114 int drm_fb_helper_setcolreg(unsigned regno,
 115                             unsigned red,
 116                             unsigned green,
 117                             unsigned blue,
 118                             unsigned transp,
 119                             struct fb_info *info);
 120
 121 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
 122 void drm_fb_helper_restore(void);
 123 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
 124                             uint32_t fb_width, uint32_t fb_height);
 125 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 126                             uint32_t depth);
 127
 128 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 129
 130 bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
 131 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
 132 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
 133 int drm_fb_helper_debug_enter(struct fb_info *info);
 134 int drm_fb_helper_debug_leave(struct fb_info *info);
 135
 136 #endif