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/*
* Copyright 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifdef DRV_EXYNOS
// clang-format off
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <xf86drm.h>
#include <exynos_drm.h>
// clang-format on
#include "drv_priv.h"
#include "helpers.h"
#include "util.h"
static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888 };
static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12 };
static int exynos_init(struct driver *drv)
{
drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
&LINEAR_METADATA, BO_USE_RENDER_MASK);
drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
&LINEAR_METADATA, BO_USE_TEXTURE_MASK);
return drv_modify_linear_combinations(drv);
}
static int exynos_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
uint64_t use_flags)
{
size_t plane;
if (format == DRM_FORMAT_NV12) {
uint32_t chroma_height;
/* V4L2 s5p-mfc requires width to be 16 byte aligned and height 32. */
width = ALIGN(width, 16);
height = ALIGN(height, 32);
chroma_height = ALIGN(height / 2, 32);
bo->strides[0] = bo->strides[1] = width;
/* MFC v8+ requires 64 byte padding in the end of luma and chroma buffers. */
bo->sizes[0] = bo->strides[0] * height + 64;
bo->sizes[1] = bo->strides[1] * chroma_height + 64;
bo->offsets[0] = bo->offsets[1] = 0;
bo->total_size = bo->sizes[0] + bo->sizes[1];
} else if (format == DRM_FORMAT_XRGB8888 || format == DRM_FORMAT_ARGB8888) {
bo->strides[0] = drv_stride_from_format(format, width, 0);
bo->total_size = bo->sizes[0] = height * bo->strides[0];
bo->offsets[0] = 0;
} else {
fprintf(stderr, "drv: unsupported format %X\n", format);
assert(0);
return -EINVAL;
}
int ret;
for (plane = 0; plane < bo->num_planes; plane++) {
size_t size = bo->sizes[plane];
struct drm_exynos_gem_create gem_create;
memset(&gem_create, 0, sizeof(gem_create));
gem_create.size = size;
gem_create.flags = EXYNOS_BO_NONCONTIG;
ret = drmIoctl(bo->drv->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &gem_create);
if (ret) {
fprintf(stderr, "drv: DRM_IOCTL_EXYNOS_GEM_CREATE failed (size=%zu)\n",
size);
goto cleanup_planes;
}
bo->handles[plane].u32 = gem_create.handle;
}
return 0;
cleanup_planes:
for (; plane != 0; plane--) {
struct drm_gem_close gem_close;
memset(&gem_close, 0, sizeof(gem_close));
gem_close.handle = bo->handles[plane - 1].u32;
int gem_close_ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
if (gem_close_ret) {
fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed: %d\n", gem_close_ret);
}
}
return ret;
}
/*
* Use dumb mapping with exynos even though a GEM buffer is created.
* libdrm does the same thing in exynos_drm.c
*/
const struct backend backend_exynos = {
.name = "exynos",
.init = exynos_init,
.bo_create = exynos_bo_create,
.bo_destroy = drv_gem_bo_destroy,
.bo_import = drv_prime_bo_import,
.bo_map = drv_dumb_bo_map,
.bo_unmap = drv_bo_munmap,
};
#endif
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