linux-kernel - [PATCH 1/1] extcon: gpio: Add power resume support

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Date:	Fri, 20 Dec 2013 16:09:47 +0800
From:	rjying <rjying@...il.com>
To:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	linux-kernel@...r.kernel.org, Barry Song <21cnbao@...il.com>,
	RongJun Ying <Rongjun.Ying@....com>,
	Binghua Duan <Binghua.Duan@....com>,
	Rongjun Ying <rongjun.ying@....com>
Subject: [PATCH 1/1] extcon: gpio: Add power resume support

From: Rongjun Ying <rongjun.ying@....com>

After system resume, need send extcon uevent to userspace

Change-Id: I32a9e1c6646035f95765bba79a7acaccb8ce45a7

Signed-off-by: Rongjun Ying <rongjun.ying@....com>
---
 drivers/extcon/extcon-gpio.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 7e0dff5..d916522 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -159,12 +159,29 @@ static int gpio_extcon_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int gpio_extcon_resume(struct device *dev)
+{
+	struct gpio_extcon_data *extcon_data;
+
+	extcon_data = dev_get_drvdata(dev);
+	queue_delayed_work(system_power_efficient_wq, &extcon_data->work,
+			      extcon_data->debounce_jiffies);
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops gpio_extcon_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(NULL, gpio_extcon_resume)
+};
+
 static struct platform_driver gpio_extcon_driver = {
 	.probe		= gpio_extcon_probe,
 	.remove		= gpio_extcon_remove,
 	.driver		= {
 		.name	= "extcon-gpio",
 		.owner	= THIS_MODULE,
+		.pm = &gpio_extcon_pm_ops,
 	},
 };
 
-- 
1.7.5.4

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