[PATCH v1 1/3] drm/msm/dpu: set dirty_fb flag while in self refresh mode

[Vinod Polimera]

While in virtual terminal mode with PSR enabled, there will be
no atomic commits triggered without dirty_fb being set. This
will create a notion of no screen update. Allow atomic commit
when dirty_fb ioctl is issued, so that it can trigger a PSR exit
and shows update on the screen.

Reported-by: Bjorn Andersson <andersson at kernel.org>
Link: https://lore.kernel.org/all/20230326162723.3lo6pnsfdwzsvbhj@ripper/
Signed-off-by: Vinod Polimera <quic_vpolimer at quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index ab636da..96f645e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1158,6 +1158,9 @@ static bool dpu_crtc_needs_dirtyfb(struct drm_crtc_state *cstate)
 	struct drm_crtc *crtc = cstate->crtc;
 	struct drm_encoder *encoder;
 
+	if (cstate->self_refresh_active)
+		return true;
+
 	drm_for_each_encoder_mask (encoder, crtc->dev, cstate->encoder_mask) {
 		if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_CMD) {
 			return true;
-- 
2.7.4