Thread (32 messages) 32 messages, 6 authors, 2014-03-28

[PATCHv4 3/5] Input: edt-ft5x06: Adjust delays to conform datasheet

From: Lothar Waßmann <hidden>
Date: 2014-03-19 13:13:50
Also in: linux-devicetree, lkml
Subsystem: input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers: Dmitry Torokhov, Linus Torvalds

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 <redacted>
---
 drivers/input/touchscreen/edt-ft5x06.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 257a1c8..27dccfc 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -652,9 +652,9 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client,
 			return error;
 		}
 
-		mdelay(50);
+		mdelay(5);
 		gpio_set_value(tsdata->reset_pin, 1);
-		mdelay(100);
+		msleep(300);
 	}
 
 	return 0;
-- 
1.7.10.4
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