Crtc state may not reflect the current crtc state if drm_fb_helper_blank
is called to turn dpms off without turning crtc off. A full modeset in
this case to solve the problem.
Signed-off-by: Jilai Wang <jil...@codeaurora.org>
---
drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index eea209e..60d0f58 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -310,6 +310,13 @@ static int mdp5_crtc_atomic_check(struct drm_crtc *crtc,
return -EINVAL;
}
+ /*
+ * check if the crtc state matches with the current state
+ * if not match, force a full mode set
+ */
+ if (state->enable != mdp5_crtc->enabled)
+ state->mode_changed = true;
+
/* verify that there are not too many planes attached to crtc
* and that we don't have conflicting mixer stages:
*/
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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