diff options
Diffstat (limited to 'drivers/rtc/rtc-max8925.c')
| -rw-r--r-- | drivers/rtc/rtc-max8925.c | 47 |
1 files changed, 42 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c index 4a5529346b4..1459055a83a 100644 --- a/drivers/rtc/rtc-max8925.c +++ b/drivers/rtc/rtc-max8925.c @@ -193,10 +193,17 @@ static int max8925_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) ret = max8925_reg_read(info->rtc, MAX8925_RTC_IRQ_MASK); if (ret < 0) goto out; - if ((ret & ALARM0_IRQ) == 0) - alrm->enabled = 1; - else + if (ret & ALARM0_IRQ) { alrm->enabled = 0; + } else { + ret = max8925_reg_read(info->rtc, MAX8925_ALARM0_CNTL); + if (ret < 0) + goto out; + if (!ret) + alrm->enabled = 0; + else + alrm->enabled = 1; + } ret = max8925_reg_read(info->rtc, MAX8925_RTC_STATUS); if (ret < 0) goto out; @@ -204,6 +211,7 @@ static int max8925_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) alrm->pending = 1; else alrm->pending = 0; + return 0; out: return ret; } @@ -220,8 +228,11 @@ static int max8925_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) ret = max8925_bulk_write(info->rtc, MAX8925_ALARM0_SEC, TIME_NUM, buf); if (ret < 0) goto out; - /* only enable alarm on year/month/day/hour/min/sec */ - ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x77); + if (alrm->enabled) + /* only enable alarm on year/month/day/hour/min/sec */ + ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x77); + else + ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x0); if (ret < 0) goto out; out: @@ -261,6 +272,8 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev) /* XXX - isn't this redundant? */ platform_set_drvdata(pdev, info); + device_init_wakeup(&pdev->dev, 1); + info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev, &max8925_rtc_ops, THIS_MODULE); ret = PTR_ERR(info->rtc_dev); @@ -290,10 +303,34 @@ static int __devexit max8925_rtc_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int max8925_rtc_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 << MAX8925_IRQ_RTC_ALARM0; + return 0; +} +static int max8925_rtc_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 << MAX8925_IRQ_RTC_ALARM0); + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(max8925_rtc_pm_ops, max8925_rtc_suspend, max8925_rtc_resume); + static struct platform_driver max8925_rtc_driver = { .driver = { .name = "max8925-rtc", .owner = THIS_MODULE, + .pm = &max8925_rtc_pm_ops, }, .probe = max8925_rtc_probe, .remove = __devexit_p(max8925_rtc_remove), |