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 };
  37
  38 struct drm_fb_helper_funcs {
  39         void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
  40                           u16 blue, int regno);
  41 };
  42
  43 struct drm_fb_helper {
  44         struct drm_framebuffer *fb;
  45         struct drm_device *dev;
  46         struct drm_display_mode *mode;
  47         int crtc_count;
  48         struct drm_fb_helper_crtc *crtc_info;
  49         struct drm_fb_helper_funcs *funcs;
  50         int conn_limit;
  51         struct list_head kernel_fb_list;
  52 };
  53
  54 int drm_fb_helper_single_fb_probe(struct drm_device *dev,
  55                                   int (*fb_create)(struct drm_device *dev,
  56                                                    uint32_t fb_width,
  57                                                    uint32_t fb_height,
  58                                                    uint32_t surface_width,
  59                                                    uint32_t surface_height,
  60                                                    struct drm_framebuffer **fb_ptr));
  61 int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count,
  62                                   int max_conn);
  63 void drm_fb_helper_free(struct drm_fb_helper *helper);
  64 int drm_fb_helper_blank(int blank, struct fb_info *info);
  65 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
  66                               struct fb_info *info);
  67 int drm_fb_helper_set_par(struct fb_info *info);
  68 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
  69                             struct fb_info *info);
  70 int drm_fb_helper_setcolreg(unsigned regno,
  71                             unsigned red,
  72                             unsigned green,
  73                             unsigned blue,
  74                             unsigned transp,
  75                             struct fb_info *info);
  76
  77 void drm_fb_helper_restore(void);
  78 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb,
  79                             uint32_t fb_width, uint32_t fb_height);
  80 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch);
  81
  82 #endif