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Diffstat (limited to 'drivers/gpu/drm/drm_dumb_buffers.c')
-rw-r--r--drivers/gpu/drm/drm_dumb_buffers.c26
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_dumb_buffers.c b/drivers/gpu/drm/drm_dumb_buffers.c
index 10307cc16d75..39ac15ce4702 100644
--- a/drivers/gpu/drm/drm_dumb_buffers.c
+++ b/drivers/gpu/drm/drm_dumb_buffers.c
@@ -24,6 +24,7 @@
*/
#include <drm/drmP.h>
+#include <drm/drm_gem.h>
#include "drm_crtc_internal.h"
@@ -42,9 +43,10 @@
* create dumb buffers suitable for scanout, which can then be used to create
* KMS frame buffers.
*
- * To support dumb objects drivers must implement the &drm_driver.dumb_create,
- * &drm_driver.dumb_destroy and &drm_driver.dumb_map_offset operations. See
- * there for further details.
+ * To support dumb objects drivers must implement the &drm_driver.dumb_create
+ * operation. &drm_driver.dumb_destroy defaults to drm_gem_dumb_destroy() if
+ * not set and &drm_driver.dumb_map_offset defaults to
+ * drm_gem_dumb_map_offset(). See the callbacks for further details.
*
* Note that dumb objects may not be used for gpu acceleration, as has been
* attempted on some ARM embedded platforms. Such drivers really must have
@@ -108,11 +110,16 @@ int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
{
struct drm_mode_map_dumb *args = data;
- /* call driver ioctl to get mmap offset */
- if (!dev->driver->dumb_map_offset)
+ if (!dev->driver->dumb_create)
return -ENOSYS;
- return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
+ if (dev->driver->dumb_map_offset)
+ return dev->driver->dumb_map_offset(file_priv, dev,
+ args->handle,
+ &args->offset);
+ else
+ return drm_gem_dumb_map_offset(file_priv, dev, args->handle,
+ &args->offset);
}
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
@@ -120,9 +127,12 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
{
struct drm_mode_destroy_dumb *args = data;
- if (!dev->driver->dumb_destroy)
+ if (!dev->driver->dumb_create)
return -ENOSYS;
- return dev->driver->dumb_destroy(file_priv, dev, args->handle);
+ if (dev->driver->dumb_destroy)
+ return dev->driver->dumb_destroy(file_priv, dev, args->handle);
+ else
+ return drm_gem_dumb_destroy(file_priv, dev, args->handle);
}