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authorAnson Huang <Anson.Huang@nxp.com>2018-09-17 11:08:52 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2018-09-18 15:28:07 -0700
commit49f62249a9577b0f8c20c7c843d23289d143daf1 (patch)
treea9e8440aab6221af0cd0cc9bd3c0276db6b9a3c2 /drivers/input/touchscreen/egalax_ts.c
parentInput: gpio-keys - fix a documentation index issue (diff)
downloadlinux-dev-49f62249a9577b0f8c20c7c843d23289d143daf1.tar.xz
linux-dev-49f62249a9577b0f8c20c7c843d23289d143daf1.zip
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>
Diffstat (limited to 'drivers/input/touchscreen/egalax_ts.c')
-rw-r--r--drivers/input/touchscreen/egalax_ts.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
index 80e69bb8283e..83ac8c128192 100644
--- a/drivers/input/touchscreen/egalax_ts.c
+++ b/drivers/input/touchscreen/egalax_ts.c
@@ -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);
}