From: yzq <yzq@rock-chips.com>
Date: Sat, 29 Sep 2012 06:43:02 +0000 (+0800)
Subject: rk3066b m701:fix ft5306 sometimes do not work when resume
X-Git-Tag: firefly_0821_release~8500
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=71f67176a9d166fe5ff329780e36c5db10f83d7e;p=firefly-linux-kernel-4.4.55.git

rk3066b m701:fix ft5306 sometimes do not work when resume
---

diff --git a/drivers/input/touchscreen/ft5306_ts_av.c b/drivers/input/touchscreen/ft5306_ts_av.c
index e2da4b3edff5..a6b1522c4ab4 100644
--- a/drivers/input/touchscreen/ft5306_ts_av.c
+++ b/drivers/input/touchscreen/ft5306_ts_av.c
@@ -721,11 +721,25 @@ static int ft5306_suspend(struct early_suspend *h)
 static int ft5306_resume(struct early_suspend *h)
 {
 	struct ft5x0x_ts_data *ft5x0x_ts;	
+	int trytimes;
+	u8 val = 0;
 	ft5x0x_ts = container_of(h, struct ft5x0x_ts_data, ft5306_early_suspend);
 	FTprintk("TSP ft5306_resume\n");
 	enable_irq(ft5x0x_ts->irq);
 	if (ft5x0x_ts->platform_wakeup)                              
 		ft5x0x_ts->platform_wakeup();
+
+	for(trytimes = 0 ;trytimes < 5; trytimes++){
+		if(ft5306_read_regs(this_client, 0x00,  &val,1)<0){
+			if (ft5x0x_ts->platform_sleep) 
+				ft5x0x_ts->platform_sleep();
+			if (ft5x0x_ts->platform_wakeup)                              
+				ft5x0x_ts->platform_wakeup();
+		}else{
+			break;
+		}
+	}
+
 	//gpio_set_value(TOUCH_RESET_PIN,GPIO_LOW);
 	//mdelay(100);
 	//gpio_set_value(TOUCH_RESET_PIN,GPIO_HIGH);