[01/12] drm: mali-dp: Update the state of all planes before re-enabling active CRTCs.

Message ID 20170421091848.4666-2-Liviu.Dudau@arm.com
State New
Headers show
Series
  • drm/mali-dp: Collate the pending patches in a series
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Commit Message

Liviu Dudau April 21, 2017, 9:18 a.m.
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>
---
 drivers/gpu/drm/arm/malidp_drv.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

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diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 898c2b58e73d..5442baf310c8 100644
--- 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);