From: Anson Huang <Anson.Huang@nxp.com>
To: dmitry.torokhov@gmail.com, fabio.estevam@nxp.com,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Linux-imx@nxp.com
Subject: [PATCH V2] input: egalax_ts: add system wakeup support
Date: Thu, 6 Sep 2018 11:24:18 +0800 [thread overview]
Message-ID: <1536204258-433-1-git-send-email-Anson.Huang@nxp.com> (raw)
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>
---
changes since V1:
remove unnecessary device wakeup check and fix the irq wake balance issue.
drivers/input/touchscreen/egalax_ts.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
index 80e69bb..83ac8c1 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);
}
--
2.7.4
next reply other threads:[~2018-09-06 3:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-06 3:24 Anson Huang [this message]
2018-09-06 16:46 ` [PATCH V2] input: egalax_ts: add system wakeup support Fabio Estevam
2018-09-17 18:09 ` Dmitry Torokhov
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