diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 1bb4c318bdd4..701cb334e1ea 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -27,6 +27,7 @@ #include <drm/drmP.h> #include <drm/drm_atomic.h> +#include <drm/drm_atomic_uapi.h> #include <drm/drm_plane_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_atomic_helper.h> @@ -3559,6 +3560,27 @@ void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); /** + * __drm_atomic_helper_plane_reset - resets planes state to default values + * @plane: plane object, must not be NULL + * @state: atomic plane state, must not be NULL + * + * Initializes plane state to default. This is useful for drivers that subclass + * the plane state. + */ +void __drm_atomic_helper_plane_reset(struct drm_plane *plane, + struct drm_plane_state *state) +{ + state->plane = plane; + state->rotation = DRM_MODE_ROTATE_0; + + state->alpha = DRM_BLEND_ALPHA_OPAQUE; + state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI; + + plane->state = state; +} +EXPORT_SYMBOL(__drm_atomic_helper_plane_reset); + +/** * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes * @plane: drm plane * @@ -3572,15 +3594,8 @@ void drm_atomic_helper_plane_reset(struct drm_plane *plane) kfree(plane->state); plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); - - if (plane->state) { - plane->state->plane = plane; - plane->state->rotation = DRM_MODE_ROTATE_0; - - /* Reset the alpha value to fully opaque if it matters */ - if (plane->alpha_property) - plane->state->alpha = plane->alpha_property->values[1]; - } + if (plane->state) + __drm_atomic_helper_plane_reset(plane, plane->state); } EXPORT_SYMBOL(drm_atomic_helper_plane_reset); |