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[13/19] drm/sun4i: backend: Set a default zpos in our reset hook

Message ID 63f77d84e998ae7b9a1a583de94c1a5c13cb10cb.1515494838.git-series.maxime.ripard@free-electrons.com
State Superseded
Headers show
Series drm/sun4i: Support more planes, zpos and plane-wide alpha | expand

Commit Message

Maxime Ripard Jan. 9, 2018, 10:56 a.m. UTC 
The our plane state zpos value will be set only if there's an existing
state attached to the plane when creating the property.

However, this is not the case during the probe, and we therefore need to
put our default value in our reset hook.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
 drivers/gpu/drm/sun4i/sun4i_layer.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index c448cb6b9fa9..03549646528a 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -28,6 +28,7 @@  struct sun4i_plane_desc {
 
 static void sun4i_backend_layer_reset(struct drm_plane *plane)
 {
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
 	struct sun4i_layer_state *state;
 
 	if (plane->state) {
@@ -43,6 +44,7 @@  static void sun4i_backend_layer_reset(struct drm_plane *plane)
 	if (state) {
 		plane->state = &state->state;
 		plane->state->plane = plane;
+		plane->state->zpos = layer->id;
 	}
 }