Subject: [PATCH] misc: max8925_onkey: add function to work as wakeup source

From: [email-masked] (Wanlong Gao)
Date: Thu, 22 Dec 2011 17:08:04 +0800

On 12/22/2011 04:55 PM, Haojian Zhuang wrote:

> From: Kevin Liu <[email-masked]>
> 
> Signed-off-by: Kevin Liu <[email-masked]>
> ---
>  drivers/input/misc/max8925_onkey.c |   35 +++++++++++++++++++++++++++++++++++
>  1 files changed, 35 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/input/misc/max8925_onkey.c b/drivers/input/misc/max8925_onkey.c
> index 7de0ded..ce07ae2 100644
> --- a/drivers/input/misc/max8925_onkey.c
> +++ b/drivers/input/misc/max8925_onkey.c
> @@ -122,6 +122,7 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev)
>  	info->idev->evbit[0] = BIT_MASK(EV_KEY);
>  	info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
>  
> +	device_init_wakeup(&pdev->dev, 1);
>  
>  	error = input_register_device(info->idev);
>  	if (error) {
> @@ -158,10 +159,44 @@ static int __devexit max8925_onkey_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> +#ifdef CONFIG_PM
> +static int max8925_onkey_suspend(struct device *dev)
> +{
> +	struct platform_device *pdev = to_platform_device(dev);
> +	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
> +
> +	if (device_may_wakeup(dev)) {
> +		chip->wakeup_flag |= 1 << (onkey_irq[0] - chip->irq_base);
> +		chip->wakeup_flag |= 1 << (onkey_irq[1] - chip->irq_base);
> +	}
> +	return 0;
> +}
> +
> +static int max8925_onkey_resume(struct device *dev)
> +{
> +	struct platform_device *pdev = to_platform_device(dev);
> +	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
> +
> +	if (device_may_wakeup(dev)) {
> +		chip->wakeup_flag &= ~(1 << (onkey_irq[0] - chip->irq_base));
> +		chip->wakeup_flag &= ~(1 << (onkey_irq[1] - chip->irq_base));
> +	}
> +	return 0;
> +}
> +
> +static struct dev_pm_ops max8925_onkey_pm_ops = {
> +	.suspend        = max8925_onkey_suspend,
> +	.resume         = max8925_onkey_resume,
> +}

You can use SIMPLE_DEV_PM_OPS here.

Thanks
-Wanlong Gao

> +#endif
> +
>  static struct platform_driver max8925_onkey_driver = {
>  	.driver		= {
>  		.name	= "max8925-onkey",
>  		.owner	= THIS_MODULE,
> +#ifdef CONFIG_PM
> +		.pm	= &max8925_onkey_pm_ops,
> +#endif
>  	},
>  	.probe		= max8925_onkey_probe,
>  	.remove		= __devexit_p(max8925_onkey_remove),