exynos.c

   1 /*
   2  * Copyright (c) 2014 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 GBM_EXYNOS
   8
   9 #include <assert.h>
  10 #include <errno.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <xf86drm.h>
  14 #include <exynos_drm.h>
  15
  16 #include "gbm_priv.h"
  17 #include "helpers.h"
  18 #include "util.h"
  19
  20 static int gbm_exynos_bo_create(struct gbm_bo *bo,
  21                                 uint32_t width, uint32_t height,
  22                                 uint32_t format, uint32_t flags)
  23 {
  24         size_t plane;
  25
  26         if (format == GBM_FORMAT_NV12) {
  27                 uint32_t chroma_height;
  28                 /* V4L2 s5p-mfc requires width to be 16 byte aligned and height 32. */
  29                 width = ALIGN(width, 16);
  30                 height = ALIGN(height, 32);
  31                 chroma_height = ALIGN(height / 2, 32);
  32                 bo->strides[0] = bo->strides[1] = width;
  33                 /* MFC v8+ requires 64 byte padding in the end of luma and chroma buffers. */
  34                 bo->sizes[0] = bo->strides[0] * height + 64;
  35                 bo->sizes[1] = bo->strides[1] * chroma_height + 64;
  36                 bo->offsets[0] = bo->offsets[1] = 0;
  37         } else if (format == GBM_FORMAT_XRGB8888 || format == GBM_FORMAT_ARGB8888 ||
  38                         format == GBM_BO_FORMAT_XRGB8888 || format == GBM_BO_FORMAT_ARGB8888 ) {
  39                 bo->strides[0] = gbm_stride_from_format(format, width);
  40                 bo->sizes[0] = height * bo->strides[0];
  41                 bo->offsets[0] = 0;
  42         } else {
  43                 fprintf(stderr, "minigbm: unsupported format %X\n", format);
  44                 assert(0);
  45                 return -EINVAL;
  46         }
  47
  48         for (plane = 0; plane < bo->num_planes; plane++) {
  49                 size_t size = bo->sizes[plane];
  50                 struct drm_exynos_gem_create gem_create;
  51                 int ret;
  52
  53                 memset(&gem_create, 0, sizeof(gem_create));
  54                 gem_create.size = size;
  55                 gem_create.flags = EXYNOS_BO_NONCONTIG;
  56
  57                 ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &gem_create);
  58                 if (ret) {
  59                         fprintf(stderr, "minigbm: DRM_IOCTL_EXYNOS_GEM_CREATE failed "
  60                                         "(size=%zu)\n", size);
  61                         return ret;
  62                 }
  63
  64                 bo->handles[plane].u32 = gem_create.handle;
  65         }
  66
  67         return 0;
  68 }
  69
  70 const struct gbm_driver gbm_driver_exynos =
  71 {
  72         .name = "exynos",
  73         .bo_create = gbm_exynos_bo_create,
  74         .bo_destroy = gbm_gem_bo_destroy,
  75         .format_list = {
  76                 {GBM_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_CURSOR | GBM_BO_USE_RENDERING | GBM_BO_USE_WRITE},
  77                 {GBM_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE | GBM_BO_USE_LINEAR},
  78                 {GBM_FORMAT_ARGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_CURSOR | GBM_BO_USE_RENDERING | GBM_BO_USE_WRITE},
  79                 {GBM_FORMAT_ARGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE | GBM_BO_USE_LINEAR},
  80                 {GBM_FORMAT_NV12, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING | GBM_BO_USE_WRITE},
  81         }
  82 };
  83
  84 #endif