disp: msm: sde: override tearcheck rd_ptr_val when qsync is enabled

When qsync is enabled with a large threshold start window, there
is a chance that two frames can be latched by mdp HW in single
vsync window. This change overrides the tearcheck rd_ptr_val
to a value larger than the end of the Tear check start window
to ensure new frame is not latched in current vsync window.

Change-Id: I21273f0bca83747210792b911e964dfd2d50079f
Signed-off-by: Jayaprakash Madisetty <quic_jmadiset@quicinc.com>
Signed-off-by: Narendra Muppalla <quic_nmuppall@quicinc.com>

msm/sde/sde_hw_intf.h

@@ -247,6 +247,13 @@ struct sde_hw_intf_ops {
 	 * Get the INTF interrupt status
 	 */
 	u32 (*get_intr_status)(struct sde_hw_intf *intf);
+
+	/**
+	 * Override tear check rd_ptr_val with adjusted_linecnt
+	 * when qsync is enabled.
+	 */
+	void (*override_tear_rd_ptr_val)(struct sde_hw_intf *intf,
+			u32 adjusted_linecnt);
 };
 
 struct sde_hw_intf {