diff options
Diffstat (limited to 'drivers/rtc/rtc-max77663.c')
| -rw-r--r-- | drivers/rtc/rtc-max77663.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-max77663.c b/drivers/rtc/rtc-max77663.c index 874a2df86dc1..13d8062e1def 100644 --- a/drivers/rtc/rtc-max77663.c +++ b/drivers/rtc/rtc-max77663.c @@ -2,8 +2,8 @@ * drivers/rtc/rtc-max77663.c * Max77663 RTC driver * - * Copyright 2011 Maxim Integrated Products, Inc. - * Copyright (C) 2011 NVIDIA Corporation + * Copyright 2011-2012, Maxim Integrated Products, Inc. + * Copyright (c) 2011-2012, NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as @@ -97,6 +97,7 @@ struct max77663_rtc { struct mutex io_lock; int irq; u8 irq_mask; + bool shutdown_ongoing; }; static inline struct device *_to_parent(struct max77663_rtc *rtc) @@ -443,6 +444,11 @@ static int max77663_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) u8 buf[RTC_NR]; int ret; + if (rtc->shutdown_ongoing) { + dev_warn(rtc->dev, "rtc_set_alarm: " + "Device shutdown on-going, skip alarm setting.\n"); + return -ESHUTDOWN; + } dev_dbg(rtc->dev, "rtc_set_alarm: " "tm: %d-%02d-%02d %02d:%02d:%02d, wday=%d [%s]\n", alrm->time.tm_year, alrm->time.tm_mon, alrm->time.tm_mday, @@ -534,7 +540,7 @@ static int max77663_rtc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "probe: kzalloc() failed\n"); return -ENOMEM; } - + rtc->shutdown_ongoing = false; dev_set_drvdata(&pdev->dev, rtc); rtc->dev = &pdev->dev; mutex_init(&rtc->io_lock); @@ -591,6 +597,17 @@ static int __devexit max77663_rtc_remove(struct platform_device *pdev) return 0; } +static void max77663_rtc_shutdown(struct platform_device *pdev) +{ + struct max77663_rtc *rtc = dev_get_drvdata(&pdev->dev); + u8 buf[RTC_NR] = { 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x1 }; + + rtc->shutdown_ongoing = true; + dev_info(rtc->dev, "rtc_shutdown: clean alarm\n"); + max77663_rtc_write(rtc, MAX77663_RTC_ALARM_SEC1, buf, sizeof(buf), 1); + max77663_rtc_alarm_irq_enable(&pdev->dev, 0); +} + static struct platform_driver max77663_rtc_driver = { .probe = max77663_rtc_probe, .remove = __devexit_p(max77663_rtc_remove), @@ -598,6 +615,7 @@ static struct platform_driver max77663_rtc_driver = { .name = "max77663-rtc", .owner = THIS_MODULE, }, + .shutdown = max77663_rtc_shutdown, }; static int __init max77663_rtc_init(void) |