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drm/mediatek: use correct device to import PRIME buffers 

PRIME buffers should be imported using the DMA device. To this end, use
a custom import function that mimics drm_gem_prime_import_dev(), but
passes the correct device.

Fixes: 119f517362 ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Alexandre Courbot 2019-07-29 14:33:34 +09:00 committed by CK Hu
parent 5f9e832c13
commit 4c6f3196e6
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/mediatek/mtk_drm_drv.c
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@ -320,6 +320,18 @@ static const struct file_operations mtk_drm_fops = {
.compat_ioctl = drm_compat_ioctl,
};
/*
* We need to override this because the device used to import the memory is
* not dev->dev, as drm_gem_prime_import() expects.
*/
struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf)
{
struct mtk_drm_private *private = dev->dev_private;
return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev);
}
static struct drm_driver mtk_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
DRIVER_ATOMIC,
@ -331,7 +343,7 @@ static struct drm_driver mtk_drm_driver = {
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_import = mtk_drm_gem_prime_import,
.gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
.gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
.gem_prime_mmap = mtk_drm_gem_mmap_buf,