drivers/gpu/drm/exynos/exynos_drm_fb.h

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   3  * Authors:
   4  *      Inki Dae <inki.dae@samsung.com>
   5  *      Joonyoung Shim <jy0922.shim@samsung.com>
   6  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #ifndef _EXYNOS_DRM_FB_H_
  29 #define _EXYNOS_DRM_FB_H
  30
  31 static inline int exynos_drm_format_num_buffers(uint32_t format)
  32 {
  33         switch (format) {
  34         case DRM_FORMAT_NV12M:
  35         case DRM_FORMAT_NV12MT:
  36                 return 2;
  37         case DRM_FORMAT_YUV420M:
  38                 return 3;
  39         default:
  40                 return 1;
  41         }
  42 }
  43
  44 struct drm_framebuffer *
  45 exynos_drm_framebuffer_init(struct drm_device *dev,
  46                             struct drm_mode_fb_cmd2 *mode_cmd,
  47                             struct drm_gem_object *obj);
  48
  49 /* get memory information of a drm framebuffer */
  50 struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
  51                                                  int index);
  52
  53 void exynos_drm_mode_config_init(struct drm_device *dev);
  54
  55 #endif