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

[Rongjun Ying]

> -----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:
> > From: Rongjun Ying <rongjun.ying at csr.com>
> >
> > 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 <rongjun.ying at csr.com>
> > Reviewed-by: Barry Song <Baohua.Song at csr.com>
> > ---
> >  -v3:
> >  'check_on_resume' instead of 'load_sleep_irq' as Chanwoo Choi's
> proposal.
> >
> >  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)
> >  	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
> >
> >
> 
> 
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