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Commit d0f744c8 authored by Paul Cercueil's avatar Paul Cercueil Committed by Linus Torvalds
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drivers/rtc/rtc-jz4740.c: add alarm function 



Add the "alarm" function to the jz4740 RTC.  Interrupts will now be raised
when the "alarm" time is reached.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f46418c5

drivers/rtc/rtc-jz4740.c

+40 −5
Original line number Diff line number Diff line 
/*

 *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>

 *  Copyright (C) 2010, Paul Cercueil <paul@crapouillou.net>

 *	 JZ4740 SoC RTC driver

 *

 *  This program is free software; you can redistribute it and/or modify it
@@ -161,7 +162,8 @@ static int jz4740_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 


	ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC_ALARM, secs);

	if (!ret)

		ret = jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_AE, alrm->enabled);

		ret = jz4740_rtc_ctrl_set_bits(rtc,

			JZ_RTC_CTRL_AE | JZ_RTC_CTRL_AF_IRQ, alrm->enabled);



	return ret;

}
@@ -258,6 +260,8 @@ static int __devinit jz4740_rtc_probe(struct platform_device *pdev) 


	platform_set_drvdata(pdev, rtc);



	device_init_wakeup(&pdev->dev, 1);



	rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, &jz4740_rtc_ops,

					THIS_MODULE);

	if (IS_ERR(rtc->rtc)) {
@@ -318,12 +322,43 @@ static int __devexit jz4740_rtc_remove(struct platform_device *pdev) 
	return 0;

}





#ifdef CONFIG_PM

static int jz4740_rtc_suspend(struct device *dev)

{

	struct jz4740_rtc *rtc = dev_get_drvdata(dev);



	if (device_may_wakeup(dev))

		enable_irq_wake(rtc->irq);

	return 0;

}



static int jz4740_rtc_resume(struct device *dev)

{

	struct jz4740_rtc *rtc = dev_get_drvdata(dev);



	if (device_may_wakeup(dev))

		disable_irq_wake(rtc->irq);

	return 0;

}



static const struct dev_pm_ops jz4740_pm_ops = {

	.suspend = jz4740_rtc_suspend,

	.resume  = jz4740_rtc_resume,

};

#define JZ4740_RTC_PM_OPS (&jz4740_pm_ops)



#else

#define JZ4740_RTC_PM_OPS NULL

#endif  /* CONFIG_PM */



struct platform_driver jz4740_rtc_driver = {

	.probe	 = jz4740_rtc_probe,

	.remove	 = __devexit_p(jz4740_rtc_remove),

	.driver	 = {

		.name  = "jz4740-rtc",

		.owner = THIS_MODULE,

		.pm    = JZ4740_RTC_PM_OPS,

	},

};