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drm/driver: Add defaults for .gem_prime_export/import callbacks

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The majority of drivers use drm_gem_prime_export() and
drm_gem_prime_import() for these callbacks so let's make them the
default.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181110145647.17580-2-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes 2018-11-10 15:56:43 +01:00
parent f577f7eac5
commit f001488112
3 changed files with 19 additions and 2 deletions
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7
Documentation/gpu/todo.rst
View File

@ -234,6 +234,13 @@ efficient.
Contact: Daniel Vetter
Defaults for .gem_prime_import and export
-----------------------------------------
Most drivers don't need to set drm_driver->gem_prime_import and
->gem_prime_export now that drm_gem_prime_import() and drm_gem_prime_export()
are the default.
Core refactorings
=================

10
drivers/gpu/drm/drm_prime.c
View File

@ -529,7 +529,10 @@ static struct dma_buf *export_and_register_object(struct drm_device *dev,
return dmabuf;
}
dmabuf = dev->driver->gem_prime_export(dev, obj, flags);
if (dev->driver->gem_prime_export)
dmabuf = dev->driver->gem_prime_export(dev, obj, flags);
else
dmabuf = drm_gem_prime_export(dev, obj, flags);
if (IS_ERR(dmabuf)) {
/* normally the created dma-buf takes ownership of the ref,
* but if that fails then drop the ref
@ -762,7 +765,10 @@ int drm_gem_prime_fd_to_handle(struct drm_device *dev,
/* never seen this one, need to import */
mutex_lock(&dev->object_name_lock);
obj = dev->driver->gem_prime_import(dev, dma_buf);
if (dev->driver->gem_prime_import)
obj = dev->driver->gem_prime_import(dev, dma_buf);
else
obj = drm_gem_prime_import(dev, dma_buf);
if (IS_ERR(obj)) {
ret = PTR_ERR(obj);
goto out_unlock;

4
include/drm/drm_drv.h
View File

@ -471,6 +471,8 @@ struct drm_driver {
* @gem_prime_export:
*
* export GEM -> dmabuf
*
* This defaults to drm_gem_prime_export() if not set.
*/
struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
struct drm_gem_object *obj, int flags);
@ -478,6 +480,8 @@ struct drm_driver {
* @gem_prime_import:
*
* import dmabuf -> GEM
*
* This defaults to drm_gem_prime_import() if not set.
*/
struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
struct dma_buf *dma_buf);