drm: mali-dp: Update the state of all planes before re-enabling active CRTCs.

Mali DP needs to have all the planes that are becoming inactive in the
new state disabled before re-enabling the active CRTC, otherwise we
start streaming out data from old pointers in memory.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 898c2b5..5442baf 100644 (file)
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -66,10 +66,12 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
        struct drm_pending_vblank_event *event;
        struct drm_device *drm = state->dev;
        struct malidp_drm *malidp = drm->dev_private;
-       int ret = malidp_set_and_wait_config_valid(drm);
 
-       if (ret)
-               DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
+       if (malidp->crtc.enabled) {
+               /* only set config_valid if the CRTC is enabled */
+               if (malidp_set_and_wait_config_valid(drm))
+                       DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
+       }
 
        event = malidp->crtc.state->event;
        if (event) {
@@ -90,9 +92,11 @@ static void malidp_atomic_commit_tail(struct drm_atomic_state *state)
        struct drm_device *drm = state->dev;
 
        drm_atomic_helper_commit_modeset_disables(drm, state);
-       drm_atomic_helper_commit_modeset_enables(drm, state);
+
        drm_atomic_helper_commit_planes(drm, state, 0);
 
+       drm_atomic_helper_commit_modeset_enables(drm, state);
+
        malidp_atomic_commit_hw_done(state);
 
        drm_atomic_helper_wait_for_vblanks(drm, state);