[PATCHv5 3/5] Input: edt-ft5x06: Adjust delays to conform datasheet

From: Lothar WaÃmann
Date: Thu Mar 20 2014 - 09:46:01 EST


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 WaÃmann <LW@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/touchscreen/edt-ft5x06.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 03dab2f..0298568 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;
--
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/