vgem.c

   1 /*
   2  * Copyright 2016 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include "drv_priv.h"
   8 #include "helpers.h"
   9
  10 static uint32_t vgem_resolve_format(uint32_t format)
  11 {
  12         switch (format) {
  13         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
  14                 /*HACK: See b/28671744 */
  15                 return DRM_FORMAT_XBGR8888;
  16         case DRM_FORMAT_FLEX_YCbCr_420_888:
  17                 return DRM_FORMAT_YVU420;
  18         default:
  19                 return format;
  20         }
  21 }
  22
  23 const struct backend backend_vgem =
  24 {
  25         .name = "vgem",
  26         .bo_create = drv_dumb_bo_create,
  27         .bo_destroy = drv_dumb_bo_destroy,
  28         .bo_map = drv_dumb_bo_map,
  29         .resolve_format = vgem_resolve_format,
  30         .format_list = {
  31                 {DRM_FORMAT_ABGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_RENDERING | DRV_BO_USE_CURSOR
  32                                       | DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN},
  33                 {DRM_FORMAT_YVU420,   DRV_BO_USE_SCANOUT | DRV_BO_USE_RENDERING |
  34                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  35         }
  36 };
  37