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  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.  
  36. struct drm_fb_helper_crtc {
  37.         uint32_t crtc_id;
  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.         int conn_limit;
  77.         struct fb_info *fbdev;
  78.         u32 pseudo_palette[17];
  79.         struct list_head kernel_fb_list;
  80.  
  81.         /* we got a hotplug but fbdev wasn't running the console
  82.            delay until next set_par */
  83.         bool delayed_hotplug;
  84. };
  85.  
  86. int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
  87.                                   int preferred_bpp);
  88.  
  89. int drm_fb_helper_init(struct drm_device *dev,
  90.                        struct drm_fb_helper *helper, int crtc_count,
  91.                                   int max_conn);
  92. void drm_fb_helper_fini(struct drm_fb_helper *helper);
  93. int drm_fb_helper_blank(int blank, struct fb_info *info);
  94. int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
  95.                               struct fb_info *info);
  96. int drm_fb_helper_set_par(struct fb_info *info);
  97. int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
  98.                             struct fb_info *info);
  99. int drm_fb_helper_setcolreg(unsigned regno,
  100.                             unsigned red,
  101.                             unsigned green,
  102.                             unsigned blue,
  103.                             unsigned transp,
  104.                             struct fb_info *info);
  105.  
  106. bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
  107. void drm_fb_helper_restore(void);
  108. void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
  109.                             uint32_t fb_width, uint32_t fb_height);
  110. void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
  111.                             uint32_t depth);
  112.  
  113. int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
  114.  
  115. int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
  116. bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
  117. int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
  118. int drm_fb_helper_debug_enter(struct fb_info *info);
  119. int drm_fb_helper_debug_leave(struct fb_info *info);
  120.  
  121. #endif
  122.