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Commit a29b99ec authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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input: add suspend wakeup support to sh_keysc 



This patch adds wakeup support to the sh_keysc driver.
With this feature the ".../power/wakeup" file can be
used to enable and disable if the device takes the
system out of suspend. Default is enabled.

Signed-off-by: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 50840714

drivers/input/keyboard/sh_keysc.c

+25 −4
Original line number Diff line number Diff line
@@ -219,6 +219,8 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev) 
		  pdata->scan_timing, priv->iomem_base + KYCR1_OFFS);

	iowrite16(0, priv->iomem_base + KYOUTDR_OFFS);

	iowrite16(KYCR2_IRQ_LEVEL, priv->iomem_base + KYCR2_OFFS);



	device_init_wakeup(&pdev->dev, 1);

	return 0;

 err5:

	free_irq(irq, pdev);
@@ -253,17 +255,36 @@ static int __devexit sh_keysc_remove(struct platform_device *pdev) 
	return 0;

}



static int sh_keysc_suspend(struct device *dev)

{

	struct platform_device *pdev;

	struct sh_keysc_priv *priv;

	unsigned short value;



	pdev = container_of(dev, struct platform_device, dev);

	priv = platform_get_drvdata(pdev);



	value = ioread16(priv->iomem_base + KYCR1_OFFS);



	if (device_may_wakeup(dev))

		value |= 0x80;

	else

		value &= ~0x80;



#define sh_keysc_suspend NULL

#define sh_keysc_resume NULL

	iowrite16(value, priv->iomem_base + KYCR1_OFFS);

	return 0;

}



static struct dev_pm_ops sh_keysc_dev_pm_ops = {

	.suspend = sh_keysc_suspend,

};



struct platform_driver sh_keysc_device_driver = {

	.probe		= sh_keysc_probe,

	.remove		= __devexit_p(sh_keysc_remove),

	.suspend	= sh_keysc_suspend,

	.resume		= sh_keysc_resume,

	.driver		= {

		.name	= "sh_keysc",

		.pm	= &sh_keysc_dev_pm_ops,

	}

};