2 * Copyright 2017 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.
19 static const uint32_t supported_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
20 DRM_FORMAT_XRGB8888 };
22 static int vc4_init(struct driver *drv)
24 return drv_add_linear_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats));
27 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
33 struct drm_vc4_create_bo bo_create;
36 * Since the ARM L1 cache line size is 64 bytes, align to that as a
37 * performance optimization.
39 stride = drv_stride_from_format(format, width, 0);
40 stride = ALIGN(stride, 64);
41 drv_bo_from_format(bo, stride, height, format);
43 memset(&bo_create, 0, sizeof(bo_create));
44 bo_create.size = bo->total_size;
46 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
48 fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n",
53 for (plane = 0; plane < bo->num_planes; plane++)
54 bo->handles[plane].u32 = bo_create.handle;
59 static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane)
62 struct drm_vc4_mmap_bo bo_map;
64 memset(&bo_map, 0, sizeof(bo_map));
65 bo_map.handle = bo->handles[0].u32;
67 ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
69 fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n");
73 data->length = bo->total_size;
75 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
79 struct backend backend_vc4 = {
82 .bo_create = vc4_bo_create,
83 .bo_import = drv_prime_bo_import,
84 .bo_destroy = drv_gem_bo_destroy,