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->total_size;
  29
  30         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
  31         if (ret) {
  32                 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed "
  33                                 "(size=%llu)\n", gem_create.size);
  34                 return ret;
  35         }
  36
  37         for (plane = 0; plane < bo->num_planes; plane++)
  38                 bo->handles[plane].u32 = gem_create.handle;
  39
  40         return 0;
  41 }
  42
  43 static void *mediatek_bo_map(struct bo *bo)
  44 {
  45         int ret;
  46         struct drm_mtk_gem_map_off gem_map;
  47
  48         memset(&gem_map, 0, sizeof(gem_map));
  49         gem_map.handle = bo->handles[0].u32;
  50
  51         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
  52         if (ret) {
  53                 fprintf(stderr,"drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
  54                 return MAP_FAILED;
  55         }
  56
  57         return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
  58                     bo->drv->fd, gem_map.offset);
  59 }
  60
  61 static drv_format_t mediatek_resolve_format(drv_format_t format)
  62 {
  63         switch (format) {
  64         case DRV_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
  65                 /*HACK: See b/28671744 */
  66                 return DRV_FORMAT_XBGR8888;
  67         case DRV_FORMAT_FLEX_YCbCr_420_888:
  68                 return DRV_FORMAT_YVU420;
  69         default:
  70                 return format;
  71         }
  72 }
  73
  74 const struct backend backend_mediatek =
  75 {
  76         .name = "mediatek",
  77         .bo_create = mediatek_bo_create,
  78         .bo_destroy = drv_gem_bo_destroy,
  79         .bo_map = mediatek_bo_map,
  80         .resolve_format = mediatek_resolve_format,
  81         .format_list = {
  82                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  83                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  84                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  85                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  86                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  87                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  88                                       DRV_BO_USE_SW_WRITE_OFTEN},
  89                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  90                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  91                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  92                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  93                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  94                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  95                                       DRV_BO_USE_SW_WRITE_OFTEN},
  96                 {DRV_FORMAT_YVU420,   DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  97                                       DRV_BO_USE_SW_WRITE_OFTEN},
  98         }
  99 };
 100
 101 #endif