[PATCH v3] extcon: gpio: Add power resume support

-----Original Message-----
From: Chanwoo Choi [mailto:cw00.choi at samsung.com]
Sent: Tuesday, January 07, 2014 2:07 PM
To: RongJun Ying
Cc: MyungJoo Ham; Barry Song; linux-arm-kernel at lists.infradead.org;
linux-kernel at vger.kernel.org; DL-SHA-WorkGroupLinux; Rongjun Ying
Subject: Re: [PATCH v3] extcon: gpio: Add power resume support

This patch has conflict as following:
You have to implement extcon patch based mainline extcon-next branch.

Applying: extcon: gpio: Add power resume support
error: patch failed: drivers/extcon/extcon-gpio.c:103
error: drivers/extcon/extcon-gpio.c: patch does not apply Patch failed
at 0001 extcon: gpio: Add power resume support The copy of the patch
that failed is found in:
   /home/cwchoi00/kernel/git.kernel/extcon/.git/rebase-apply/patch
When you have resolved this problem, run "git am --resolved".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

This time, I will manually apply this patch on extcon branch.

Thanks,
Chanwoo Choi

Thank you.

RongJun Ying

On 01/07/2014 01:56 PM, RongJun Ying wrote:

quoted

From: Rongjun Ying <redacted>

When system on the suspend state, Some SoC can't get gpio interrupt.
After system resume, need send extcon uevent to userspace.

Signed-off-by: Rongjun Ying <redacted>
Reviewed-by: Barry Song <redacted>
---
 -v3:
 'check_on_resume' instead of 'load_sleep_irq' as Chanwoo Choi's

proposal.

quoted

 drivers/extcon/extcon-gpio.c       |   20 ++++++++++++++++++++
 include/linux/extcon/extcon-gpio.h |    1 +
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/drivers/extcon/extcon-gpio.c

b/drivers/extcon/extcon-gpio.c index 7e0dff5..fde52c1 100644

--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c

@@ -40,6 +40,7 @@ struct gpio_extcon_data {
 	int irq;
 	struct delayed_work work;
 	unsigned long debounce_jiffies;
+	bool check_on_resume;
 };

 static void gpio_extcon_work(struct work_struct *work) @@ -103,6
+104,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
 	extcon_data->gpio_active_low = pdata->gpio_active_low;
 	extcon_data->state_on = pdata->state_on;
 	extcon_data->state_off = pdata->state_off;
+	extcon_data->check_on_resume = pdata->check_on_resume;
 	if (pdata->state_on && pdata->state_off)
 		extcon_data->edev.print_state = extcon_gpio_print_state;
 	if (pdata->debounce) {

@@ -159,12 +161,30 @@ static int gpio_extcon_remove(struct

platform_device *pdev)

quoted

 	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);
+	if (extcon_data->check_on_resume)
+		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,
 	},
 };

diff --git a/include/linux/extcon/extcon-gpio.h

b/include/linux/extcon/extcon-gpio.h
index 4195810..c7f0c3e 100644

--- a/include/linux/extcon/extcon-gpio.h
+++ b/include/linux/extcon/extcon-gpio.h

@@ -51,6 +51,7 @@ struct gpio_extcon_platform_data {
 	/* if NULL, "0" or "1" will be printed */
 	const char *state_on;
 	const char *state_off;
+	bool check_on_resume;
 };

 #endif /* __EXTCON_GPIO_H__ */
--

1.7.5.4

 To report this email as spam click
https://www.mailcontrol.com/sr/MZbqvYs5QwJvpeaetUwhCQ==
BhEym36W00netVd8YYrcUQrAnqreWejYcysfmF8UmgH1OQ== .

Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
More information can be found at www.csr.com. Keep up to date with CSR on our technical blog, www.csr.com/blog, CSR people blog, www.csr.com/people, YouTube, www.youtube.com/user/CSRplc, Facebook, www.facebook.com/pages/CSR/191038434253534, or follow us on Twitter at www.twitter.com/CSR_plc.
New for 2014, you can now access the wide range of products powered by aptX at www.aptx.com.