From: Wei Ni <[email protected]> this driver supports setting of alarms, and reading/setting of time
Signed-off-by: Wei Ni <[email protected]> --- v8: use OSC_SRC_SEL to select external crystal clock. set alrm->enabled and init the rtc->irq_en. Add suspend/resume callback. drivers/rtc/rtc-tps6586x.c | 34 ++++++++++++++++++++++++++++++---- 1 files changed, 30 insertions(+), 4 deletions(-) diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index a42b4bb..b891899 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c @@ -30,6 +30,7 @@ #include <linux/slab.h> #define RTC_CTRL 0xc0 +#define OSC_SRC_SEL BIT(6) /* select internal or external clock */ #define RTC_ENABLE BIT(5) /* enables alarm */ #define RTC_HIRES BIT(4) /* 1Khz or 32Khz updates */ #define RTC_ALARM1_HI 0xc1 @@ -180,6 +181,7 @@ static int tps6586x_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) seconds += rtc->epoch_start; rtc_time_to_tm(seconds, &alrm->time); + alrm->enabled = rtc->irq_en; return 0; } @@ -286,7 +288,9 @@ static int __devinit tps6586x_rtc_probe(struct platform_device *pdev) /* disable high-res mode, enable tick counting */ err = tps6586x_update(tps_dev, RTC_CTRL, - (RTC_ENABLE | RTC_HIRES), RTC_ENABLE); + (RTC_ENABLE | OSC_SRC_SEL), + (RTC_ENABLE | OSC_SRC_SEL)); + if (err < 0) { dev_err(&pdev->dev, "unable to start counter\n"); goto fail; @@ -299,11 +303,12 @@ static int __devinit tps6586x_rtc_probe(struct platform_device *pdev) IRQF_ONESHOT, "tps6586x-rtc", &pdev->dev); if (err) { - dev_warn(&pdev->dev, "unable to request IRQ(%d)\n", rtc->irq); + dev_warn(&pdev->dev, "unable to request IRQ(%d)\n", + rtc->irq); rtc->irq = -1; } else { disable_irq(rtc->irq); - enable_irq_wake(rtc->irq); + rtc->irq_en = false; } } @@ -327,6 +332,25 @@ static int __devexit tps6586x_rtc_remove(struct platform_device *pdev) return 0; } +static int tps6586x_rtc_suspend(struct platform_device *pdev, + pm_message_t state) +{ + struct tps6586x_rtc *rtc = dev_get_drvdata(&pdev->dev); + + if (device_may_wakeup(pdev)) + enable_irq_wake(rtc->irq); + return 0; +} + +static int tps6586x_rtc_resume(struct platform_device *pdev) +{ + struct tps6586x_rtc *rtc = dev_get_drvdata(&pdev->dev); + + if (device_may_wakeup(pdev)) + disable_irq_wake(rtc->irq); + return 0; +} + static struct platform_driver tps6586x_rtc_driver = { .driver = { .name = "tps6586x-rtc", @@ -334,6 +358,8 @@ static struct platform_driver tps6586x_rtc_driver = { }, .probe = tps6586x_rtc_probe, .remove = __devexit_p(tps6586x_rtc_remove), + .suspend = tps6586x_rtc_suspend, + .resume = tps6586x_rtc_resume, }; static int __init tps6586x_rtc_init(void) @@ -351,4 +377,4 @@ module_exit(tps6586x_rtc_exit); MODULE_DESCRIPTION("TI TPS6586x RTC driver"); MODULE_AUTHOR("NVIDIA Corporation"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:rtc-tps6586x") +MODULE_ALIAS("platform:rtc-tps6586x"); -- 1.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
