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Date: Fri, 15 Oct 2010 20:51:11 +0200 From: Paul Cercueil <paul@...pouillou.net> To: a.zummo@...ertech.it Cc: gortmaker@...oo.com, lars@...afoo.de, mcuos.com@...il.com, rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net> Subject: [PATCH] Add the possibility to use the "alarm" function of the jz4740 RTC. Interrupts will now be raised when the "alarm" time is reached. Signed-off-by: Paul Cercueil <paul@...pouillou.net> --- drivers/rtc/rtc-jz4740.c | 45 ++++++++++++++++++++++++++++++++++++++++----- 1 files changed, 40 insertions(+), 5 deletions(-) diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 2619d57..3ce8a42 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@...afoo.de> + * Copyright (C) 2010, Paul Cercueil <paul@...pouillou.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", + .probe = jz4740_rtc_probe, + .remove = __devexit_p(jz4740_rtc_remove), + .driver = { + .name = "jz4740-rtc", .owner = THIS_MODULE, + .pm = JZ4740_RTC_PM_OPS, }, }; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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