disp: msm: update min prefill lines for sde rsc

Update minimum prefill lines for command mode
displays based on system recommendation for
different fps. Video mode display can support
prefill lines based on panel porches.

Change-Id: I52dc67035fa80668281926ce4d7dd1b292fbc3b7
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

msm/sde_rsc.c

@@ -59,7 +59,6 @@
 #define PRIMARY_VBLANK_WORST_CASE_MS 34
 
 #define DEFAULT_PANEL_MIN_V_PREFILL	35
-#define DEFAULT_PANEL_MAX_V_PREFILL	108
 
 static struct sde_rsc_priv *rsc_prv_list[MAX_RSC_COUNT];
 static struct device *rpmh_dev[MAX_RSC_COUNT];
@@ -294,6 +293,7 @@ static u32 sde_rsc_timer_calculate(struct sde_rsc_priv *rsc,
 	u64 pdc_backoff_time_ns;
 	s64 total;
 	int ret = 0;
+	u32 default_prefill_lines;
 
 	if (cmd_config)
 		memcpy(&rsc->cmd_config, cmd_config, sizeof(*cmd_config));
@@ -307,12 +307,13 @@ static u32 sde_rsc_timer_calculate(struct sde_rsc_priv *rsc,
 		rsc->cmd_config.jitter_denom = DEFAULT_PANEL_JITTER_DENOMINATOR;
 	if (!rsc->cmd_config.vtotal)
 		rsc->cmd_config.vtotal = DEFAULT_PANEL_VTOTAL;
-	if (!rsc->cmd_config.prefill_lines)
-		rsc->cmd_config.prefill_lines = DEFAULT_PANEL_PREFILL_LINES;
-	if (rsc->cmd_config.prefill_lines > DEFAULT_PANEL_MAX_V_PREFILL)
-		rsc->cmd_config.prefill_lines = DEFAULT_PANEL_MAX_V_PREFILL;
-	if (rsc->cmd_config.prefill_lines < DEFAULT_PANEL_MIN_V_PREFILL)
-		rsc->cmd_config.prefill_lines = DEFAULT_PANEL_MIN_V_PREFILL;
+
+	default_prefill_lines = (rsc->cmd_config.fps *
+		DEFAULT_PANEL_MIN_V_PREFILL) / DEFAULT_PANEL_FPS;
+	if ((state == SDE_RSC_CMD_STATE) ||
+	    (rsc->cmd_config.prefill_lines < default_prefill_lines))
+		rsc->cmd_config.prefill_lines = default_prefill_lines;
+
 	pr_debug("frame fps:%d jitter_numer:%d jitter_denom:%d vtotal:%d prefill lines:%d\n",
 		rsc->cmd_config.fps, rsc->cmd_config.jitter_numer,
 		rsc->cmd_config.jitter_denom, rsc->cmd_config.vtotal,