diff options
Diffstat (limited to 'include/drm/drm_plane.h')
| -rw-r--r-- | include/drm/drm_plane.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h index 26fa50c2a50e..7d4d6c7f0afd 100644 --- a/include/drm/drm_plane.h +++ b/include/drm/drm_plane.h @@ -288,6 +288,8 @@ struct drm_plane_funcs { * cleaned up by calling the @atomic_destroy_state hook in this * structure. * + * This callback is mandatory for atomic drivers. + * * Atomic drivers which don't subclass &struct drm_plane_state should use * drm_atomic_helper_plane_duplicate_state(). Drivers that subclass the * state structure to extend it with driver-private state should use @@ -314,6 +316,8 @@ struct drm_plane_funcs { * * Destroy a state duplicated with @atomic_duplicate_state and release * or unreference all resources it references + * + * This callback is mandatory for atomic drivers. */ void (*atomic_destroy_state)(struct drm_plane *plane, struct drm_plane_state *state); @@ -431,7 +435,10 @@ struct drm_plane_funcs { * This optional hook is used for the DRM to determine if the given * format/modifier combination is valid for the plane. This allows the * DRM to generate the correct format bitmask (which formats apply to - * which modifier). + * which modifier), and to valdiate modifiers at atomic_check time. + * + * If not present, then any modifier in the plane's modifier + * list is allowed with any of the plane's formats. * * Returns: * |