diff options
Diffstat (limited to 'drivers/input/touchscreen/egalax_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/egalax_ts.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c index 04c92e03b8aa..321146efbff3 100644 --- a/drivers/input/touchscreen/egalax_ts.c +++ b/drivers/input/touchscreen/egalax_ts.c @@ -147,6 +147,7 @@ static int egalax_wake_up_device(struct i2c_client *client) return ret; } /* wake up controller via an falling edge on IRQ gpio. */ + gpio_direction_output(gpio, 1); gpio_direction_output(gpio, 0); gpio_set_value(gpio, 1); /* controller should be waken up, return irq. */ @@ -192,6 +193,10 @@ static int __devinit egalax_ts_probe(struct i2c_client *client, data->input_dev = input_dev; /* controller may be in sleep, wake it up. */ egalax_wake_up_device(client); + msleep(10); + /* the controller needs some time to wakeup, otherwise the + * following firmware version read will be failed. + */ ret = egalax_firmware_version(client); if (ret < 0) { dev_err(&client->dev, |