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