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