mediatek.c

   1 /*
   2  * Copyright 2015 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 #ifdef DRV_MEDIATEK
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <sys/mman.h>
  12 #include <xf86drm.h>
  13 #include <mediatek_drm.h>
  14
  15 #include "drv_priv.h"
  16 #include "helpers.h"
  17
  18 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height,
  19                               uint32_t format, uint32_t flags)
  20 {
  21         int ret;
  22         size_t plane;
  23         struct drm_mtk_gem_create gem_create;
  24
  25         drv_bo_from_format(bo, width, height, format);
  26
  27         memset(&gem_create, 0, sizeof(gem_create));
  28         gem_create.size = bo->offsets[bo->num_planes - 1] +
  29                           bo->sizes[bo->num_planes - 1];
  30
  31         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
  32         if (ret) {
  33                 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed "
  34                                 "(size=%llu)\n", gem_create.size);
  35                 return ret;
  36         }
  37
  38         for (plane = 0; plane < bo->num_planes; plane++)
  39                 bo->handles[plane].u32 = gem_create.handle;
  40
  41         return 0;
  42 }
  43
  44 static void *mediatek_bo_map(struct bo *bo)
  45 {
  46         int ret;
  47         struct drm_mtk_gem_map_off gem_map;
  48
  49         memset(&gem_map, 0, sizeof(gem_map));
  50         gem_map.handle = bo->handles[0].u32;
  51
  52         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
  53         if (ret) {
  54                 fprintf(stderr,"drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
  55                 return MAP_FAILED;
  56         }
  57
  58         return mmap(0, bo->sizes[0], PROT_READ | PROT_WRITE, MAP_SHARED,
  59                     bo->drv->fd, gem_map.offset);
  60 }
  61
  62 static drv_format_t mediatek_resolve_format(drv_format_t format)
  63 {
  64         switch (format) {
  65         case DRV_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
  66                 /*HACK: See b/28671744 */
  67                 return DRV_FORMAT_XBGR8888;
  68         case DRV_FORMAT_FLEX_YCbCr_420_888:
  69                 return DRV_FORMAT_YVU420;
  70         default:
  71                 return format;
  72         }
  73 }
  74
  75 const struct backend backend_mediatek =
  76 {
  77         .name = "mediatek",
  78         .bo_create = mediatek_bo_create,
  79         .bo_destroy = drv_gem_bo_destroy,
  80         .bo_map = mediatek_bo_map,
  81         .resolve_format = mediatek_resolve_format,
  82         .format_list = {
  83                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  84                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  85                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  86                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  87                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  88                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  89                                       DRV_BO_USE_SW_WRITE_OFTEN},
  90                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  91                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  92                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  93                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  94                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  95                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  96                                       DRV_BO_USE_SW_WRITE_OFTEN},
  97                 {DRV_FORMAT_YVU420,   DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  98                                       DRV_BO_USE_SW_WRITE_OFTEN},
  99         }
 100 };
 101
 102 #endif