disp: msm: sde: increase rsc min_threshold time

Increase the rsc min_threshold time, so that it has
sufficient time to complete the sequencer in rare
cases. Increase the polling time for tcs ok
from 1us to 3us to align with the min_threshold.

Change-Id: I8ebe250823969e55ec2ec4bb9f8f55bf4aa52aa5
Signed-off-by: Veera Sundaram Sankaran <[email protected]>

msm/sde_rsc.c

@@ -37,10 +37,11 @@
 /**
  * rsc_min_threshold will be set to MIN_THRESHOLD_OVERHEAD_TIME which
  * takes into account back off time + overhead from RSC/RSC_WRAPPER. The
- * overhead buffer time is required to be greater than 14. For measure,
- * this value assumes 18.
+ * overhead buffer time is required to be greater than 14. Program it
+ * with a higher value (3.3 ms), so it has sufficient time to complete
+ * the sequence in rare cases.
  */
-#define MIN_THRESHOLD_OVERHEAD_TIME	18
+#define MIN_THRESHOLD_OVERHEAD_TIME	64
 
 #define DEFAULT_PANEL_FPS		60
 #define DEFAULT_PANEL_JITTER_NUMERATOR	2

msm/sde_rsc_hw.c

@@ -872,14 +872,19 @@ int rsc_hw_tcs_wait(struct sde_rsc_priv *rsc)
 	}
 
 	/* check for sequence running status before exiting */
-	for (count = MAX_CHECK_LOOPS; count > 0; count--) {
+	for (count = (MAX_CHECK_LOOPS / 4); count > 0; count--) {
 		seq_status = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
 				rsc->debug_mode) & BIT(1);
 		if (!seq_status) {
 			rc = 0;
 			break;
 		}
-		usleep_range(1, 2);
+
+		dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
+						0x1, rsc->debug_mode);
+		usleep_range(3, 4);
+		dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
+						0x0, rsc->debug_mode);
 	}
 
 	return rc;