drm/msm/dpu: set dirty_fb flag while in self refresh mode

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@kernel.org>
Link: https://lore.kernel.org/all/20230326162723.3lo6pnsfdwzsvbhj@ripper/
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/530206/
Link: https://lore.kernel.org/r/1680271114-1534-2-git-send-email-quic_vpolimer@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index b6afb1c..bdafbbd 100644 (file)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1167,6 +1167,9 @@ 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;