From: luowei <lw@rock-chips.com>
Date: Tue, 12 Apr 2011 06:01:48 +0000 (+0800)
Subject: reduce delay while reading touch screen value
X-Git-Tag: firefly_0821_release~10507
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d8b02175c8ec5bdc9f19349bdb9b094b119f8c03;p=firefly-linux-kernel-4.4.55.git

reduce delay while reading touch screen value
---

diff --git a/drivers/input/touchscreen/ili2102_ts.c b/drivers/input/touchscreen/ili2102_ts.c
index 3a115e92bad3..24821301f002 100755
--- a/drivers/input/touchscreen/ili2102_ts.c
+++ b/drivers/input/touchscreen/ili2102_ts.c
@@ -96,15 +96,15 @@ static void ili2102_ts_work_func(struct work_struct *work)
 	msg[0].flags = ts->client->flags;
 	msg[0].len = 1;
 	msg[0].buf = &start_reg;
-	msg[0].scl_rate = 200*1000;
-	msg[0].udelay = 500;
+	msg[0].scl_rate = 400*1000;
+	msg[0].udelay = 80;
 
 	msg[1].addr = ts->client->addr;
 	msg[1].flags = ts->client->flags | I2C_M_RD;
 	msg[1].len = 9;	
 	msg[1].buf = buf;//msg[1].buf = (u8*)&buf[0];
-	msg[1].scl_rate = 200*1000;
-	msg[1].udelay = 500;
+	msg[1].scl_rate = 400*1000;
+	msg[1].udelay = 80;
 	
 	ret = i2c_transfer(ts->client->adapter, msg, 2); 
 	if (ret < 0) 
@@ -171,7 +171,7 @@ static void ili2102_ts_work_func(struct work_struct *work)
 out:   
 	if(ts->pendown)
 	{
-		schedule_delayed_work(&ts->work, msecs_to_jiffies(20));
+		schedule_delayed_work(&ts->work, msecs_to_jiffies(10));
 		ts->pendown = 0;
 	}
 	else