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Input: egalax_ts - add system wakeup support 

This patch adds wakeup function support for egalax touch
screen, if "wakeup-source" is added to device tree's egalax
touch screen node, the wakeup function will be enabled, and
egalax touch screen will be able to wakeup system from suspend.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Anson Huang 2018-09-17 11:08:52 -07:00 committed by Dmitry Torokhov
parent b8a946d8dc
commit 49f62249a9
1 changed files with 6 additions and 0 deletions
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6
drivers/input/touchscreen/egalax_ts.c
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@ -241,6 +241,9 @@ static int __maybe_unused egalax_ts_suspend(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
int ret;
if (device_may_wakeup(dev))
return enable_irq_wake(client->irq);
ret = i2c_master_send(client, suspend_cmd, MAX_I2C_DATA_LEN);
return ret > 0 ? 0 : ret;
}
@ -249,6 +252,9 @@ static int __maybe_unused egalax_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
if (device_may_wakeup(dev))
return disable_irq_wake(client->irq);
return egalax_wake_up_device(client);
}