From: Lothar Waßmann <LW@KARO-electronics.de>
Date: Fri, 28 Mar 2014 16:27:50 +0000 (-0700)
Subject: Input: edt-ft5x06 - adjust delays to conform datasheet
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c0808467494318029f71185b42b61f1ae153afdc;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Input: edt-ft5x06 - adjust delays to conform datasheet

The FT5x06 datasheet specifies a minimum reset width of 5ms and a
delay between deassertion of reset and start of reporting of 300ms.
Adjust the delays to conform to the datasheet.

With the original delays I sometimes experienced communication
timeouts when initializing the controller.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 9d61f1e36b33..fd18e580870a 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -635,7 +635,7 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client,
 			return error;
 		}
 
-		mdelay(5);
+		msleep(5);
 		gpio_set_value(tsdata->wake_pin, 1);
 	}
 	if (gpio_is_valid(tsdata->reset_pin)) {
@@ -650,9 +650,9 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client,
 			return error;
 		}
 
-		mdelay(50);
+		msleep(5);
 		gpio_set_value(tsdata->reset_pin, 1);
-		mdelay(100);
+		msleep(300);
 	}
 
 	return 0;