diff options
| author | Philipp Puschmann <p.puschmann@pironex.com> | 2023-05-05 20:48:45 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-05-05 20:50:14 +0200 |
| commit | 5672bd308ef23b81eb40dd2963f925fd671a66c2 (patch) | |
| tree | 028a8ebb43725e3d0c9f4129300c2ba1f6988c51 /drivers/input | |
| parent | Input: cyttsp5 - implement proper sleep and wakeup procedures (diff) | |
| download | linux-5672bd308ef23b81eb40dd2963f925fd671a66c2.tar.xz linux-5672bd308ef23b81eb40dd2963f925fd671a66c2.zip | |
Input: edt-ft5x06 - add delay after waking up
The touch controller needs some time to wake-up after setting the wake-up
gpio. Without having a delay after wake-up probing regularly fails in
edt_ft5x06_ts_identify() with an error (i.e. EREMOTEIO) that was caused
by a failed i2c transfer.
The datasheet sets the wake-up time to 5 ms, although it is not entirely
clear.
Signed-off-by: Philipp Puschmann <p.puschmann@pironex.com>
Link: https://lore.kernel.org/r/20230505115823.545803-1-p.puschmann@pironex.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/touchscreen/edt-ft5x06.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 24ab9e9f5b21..3a1a5e76cd68 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -1241,6 +1241,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client) if (tsdata->wake_gpio) { usleep_range(5000, 6000); gpiod_set_value_cansleep(tsdata->wake_gpio, 1); + usleep_range(5000, 6000); } if (tsdata->reset_gpio) { |