drm/malidp: Fix smart layer when doing pm_suspend/resume

Smart layer enable rectangles is set to 1 when the driver is probed,
however when doing pm_suspend the value is lost and it's not set again
making the SMART_LAYER unusable, fix that by initializing the number
of rectangles everytime we do a plane update.

Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 49c37f6..b9903c9 100644 (file)
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -366,10 +366,17 @@ static void malidp_de_plane_update(struct drm_plane *plane,
                        LAYER_V_VAL(plane->state->crtc_y),
                        mp->layer->base + MALIDP_LAYER_OFFSET);
 
-       if (mp->layer->id == DE_SMART)
+       if (mp->layer->id == DE_SMART) {
+               /*
+                * Enable the first rectangle in the SMART layer to be
+                * able to use it as a drm plane.
+                */
+               malidp_hw_write(mp->hwdev, 1,
+                               mp->layer->base + MALIDP550_LS_ENABLE);
                malidp_hw_write(mp->hwdev,
                                LAYER_H_VAL(src_w) | LAYER_V_VAL(src_h),
                                mp->layer->base + MALIDP550_LS_R1_IN_SIZE);
+       }
 
        /* first clear the rotation bits */
        val = malidp_hw_read(mp->hwdev, mp->layer->base + MALIDP_LAYER_CONTROL);
@@ -484,12 +491,6 @@ int malidp_de_planes_init(struct drm_device *drm)
                plane->layer = &map->layers[i];
 
                if (id == DE_SMART) {
-                       /*
-                        * Enable the first rectangle in the SMART layer to be
-                        * able to use it as a drm plane.
-                        */
-                       malidp_hw_write(malidp->dev, 1,
-                                       plane->layer->base + MALIDP550_LS_ENABLE);
                        /* Skip the features which the SMART layer doesn't have. */
                        continue;
                }