diff options
| -rw-r--r-- | drivers/input/touchscreen/elan_ts.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/elan_ts.c b/drivers/input/touchscreen/elan_ts.c index 7edd87d6cd1b..90272594d120 100644 --- a/drivers/input/touchscreen/elan_ts.c +++ b/drivers/input/touchscreen/elan_ts.c @@ -359,6 +359,33 @@ static const struct i2c_device_id elan_touch_id[] = { {} }; +static int elan_suspend(struct device *dev) +{ + return 0; +} + +static int elan_resume(struct device *dev) +{ + uint8_t buf[IDX_PACKET_SIZE] = { 0 }; + + if (0 == elan_touch_detect_int_level()) { + dev_dbg(dev, "Got touch during suspend period.\n"); + /* + * if touch screen during suspend, recv and drop the + * data, then touch interrupt pin will return high after + * receving data. + */ + elan_touch_recv_data(elan_touch_data.client, buf); + } + + return 0; +} + +static const struct dev_pm_ops elan_dev_pm_ops = { + .suspend = elan_suspend, + .resume = elan_resume, +}; + static struct i2c_driver elan_touch_driver = { .probe = elan_touch_probe, .remove = elan_touch_remove, @@ -366,6 +393,9 @@ static struct i2c_driver elan_touch_driver = { .driver = { .name = "elan-touch", .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &elan_dev_pm_ops, +#endif }, }; |