[PATCH 13/21] drm/msm/dpu: Require modeset if clone mode status changes

[Jessica Zhang]

If the clone mode enabled status is changing, a modeset needs to happen
so that the resources can be reassigned

Signed-off-by: Jessica Zhang <quic_jessz...@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 1b0cc899e8c1..99eaaca405a4 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1306,6 +1306,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
        int rc = 0;
 
        bool needs_dirtyfb = dpu_crtc_needs_dirtyfb(crtc_state);
+       bool clone_mode_requested = drm_crtc_in_clone_mode(crtc->state);
+       bool clone_mode_enabled = drm_crtc_in_clone_mode(crtc_state);
 
        /* there might be cases where encoder needs a modeset too */
        drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) 
{
@@ -1313,6 +1315,10 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
                        crtc_state->mode_changed = true;
        }
 
+       if ((clone_mode_requested && !clone_mode_enabled) ||
+                       (!clone_mode_requested && clone_mode_enabled))
+               crtc_state->mode_changed = true;
+
        if (drm_atomic_crtc_needs_modeset(crtc_state)) {
                rc = dpu_crtc_assign_resources(crtc, crtc_state);
                if (rc < 0)

-- 
2.34.1