disp: msm: sde: Clear CRTC cached ROI on IPC

Testing of the SPR feature shows IPC restore frames where partial update
programming is not applied. This is a result of the pre-IPC cached ROI
region being used for filtering of CRTC ROI changes.

Update the CRTC cached ROI logic to clear the cached ROI on IPC events.
This ensures color processing partial update logic handles the post IPC
frame with a clean state.

Change-Id: I4e337bd150d02e4c8934ca04c0d632d5ad71dd5d
Signed-off-by: Christopher Braga <[email protected]>

msm/sde/sde_crtc.c

@@ -5170,6 +5170,9 @@ void sde_crtc_reset_sw_state(struct drm_crtc *crtc)
 	set_bit(SDE_CRTC_DIRTY_DIM_LAYERS, &sde_crtc->revalidate_mask);
 	if (cstate->num_ds_enabled)
 		set_bit(SDE_CRTC_DIRTY_DEST_SCALER, cstate->dirty);
+
+	/* wipe out cached CRTC ROI so PU is seen as dirty next update */
+	memset(&cstate->cached_user_roi_list, 0, sizeof(cstate->cached_user_roi_list));
 }
 
 static void sde_crtc_post_ipc(struct drm_crtc *crtc)