From: Anson Huang <Anson.Huang@nxp.com>
To: dmitry.torokhov@gmail.com, robh+dt@kernel.org,
mark.rutland@arm.com, marco.franchi@nxp.com,
fabio.estevam@nxp.com, linux-input@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Linux-imx@nxp.com
Subject: [PATCH 1/2] input: egalax_ts: add system wakeup support
Date: Wed, 5 Sep 2018 17:26:46 +0800 [thread overview]
Message-ID: <1536139607-16848-1-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>
---
drivers/input/touchscreen/egalax_ts.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
index 80e69bb..74984ed 100644
--- a/drivers/input/touchscreen/egalax_ts.c
+++ b/drivers/input/touchscreen/egalax_ts.c
@@ -164,6 +164,7 @@ static int egalax_firmware_version(struct i2c_client *client)
static int egalax_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device_node *np = client->dev.of_node;
struct egalax_ts *ts;
struct input_dev *input_dev;
int error;
@@ -224,6 +225,9 @@ static int egalax_ts_probe(struct i2c_client *client,
if (error)
return error;
+ if (of_property_read_bool(np, "wakeup-source"))
+ device_init_wakeup(&client->dev, true);
+
return 0;
}
@@ -241,6 +245,9 @@ 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 +256,9 @@ static int __maybe_unused egalax_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ if (device_may_wakeup(dev))
+ return 0;
+
return egalax_wake_up_device(client);
}
--
2.7.4
next reply other threads:[~2018-09-05 9:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 9:26 Anson Huang [this message]
2018-09-05 9:26 ` [PATCH 2/2] dt-bindings: egalax-ts: add support for wakeup event action Anson Huang
[not found] ` <5b9f3f5d.1c69fb81.bca6d.cdee@mx.google.com>
2018-09-17 18:07 ` Dmitry Torokhov
2018-09-19 1:01 ` Rob Herring
2018-09-05 10:34 ` [PATCH 1/2] input: egalax_ts: add system wakeup support Andi Shyti
2018-09-05 17:27 ` Dmitry Torokhov
2018-09-06 3:30 ` Anson Huang
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