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/*
* Copyright 2016 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.
*/
#include "drv_priv.h"
#include "helpers.h"
#include "util.h"
#define MESA_LLVMPIPE_TILE_ORDER 6
#define MESA_LLVMPIPE_TILE_SIZE (1 << MESA_LLVMPIPE_TILE_ORDER)
static struct supported_combination combos[4] = {
{DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN |
BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN |
BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
};
static int vgem_init(struct driver *drv)
{
drv_insert_combinations(drv, combos, ARRAY_SIZE(combos));
return 0;
}
static int vgem_bo_create(struct bo *bo, uint32_t width, uint32_t height,
uint32_t format, uint32_t flags)
{
int ret = drv_dumb_bo_create(bo, ALIGN(width, MESA_LLVMPIPE_TILE_SIZE),
ALIGN(height, MESA_LLVMPIPE_TILE_SIZE),
format, flags);
bo->width = width;
bo->height = height;
return ret;
}
static uint32_t vgem_resolve_format(uint32_t format)
{
switch (format) {
case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
/*HACK: See b/28671744 */
return DRM_FORMAT_XBGR8888;
case DRM_FORMAT_FLEX_YCbCr_420_888:
return DRM_FORMAT_YVU420;
default:
return format;
}
}
struct backend backend_vgem =
{
.name = "vgem",
.init = vgem_init,
.bo_create = vgem_bo_create,
.bo_destroy = drv_dumb_bo_destroy,
.bo_import = drv_prime_bo_import,
.bo_map = drv_dumb_bo_map,
.resolve_format = vgem_resolve_format,
};
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