diff options
Diffstat (limited to 'drivers/rtc/rtc-omap.c')
| -rw-r--r-- | drivers/rtc/rtc-omap.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index b04ea9b5ae67..51e52446eacb 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -113,6 +113,7 @@ /* OMAP_RTC_OSC_REG bit fields: */ #define OMAP_RTC_OSC_32KCLK_EN BIT(6) #define OMAP_RTC_OSC_SEL_32KCLK_SRC BIT(3) +#define OMAP_RTC_OSC_OSC32K_GZ_DISABLE BIT(4) /* OMAP_RTC_IRQWAKEEN bit fields: */ #define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN BIT(1) @@ -146,6 +147,7 @@ struct omap_rtc { u8 interrupts_reg; bool is_pmic_controller; bool has_ext_clk; + bool is_suspending; const struct omap_rtc_device_type *type; struct pinctrl_dev *pctldev; }; @@ -786,8 +788,9 @@ static int omap_rtc_probe(struct platform_device *pdev) */ if (rtc->has_ext_clk) { reg = rtc_read(rtc, OMAP_RTC_OSC_REG); - rtc_write(rtc, OMAP_RTC_OSC_REG, - reg | OMAP_RTC_OSC_SEL_32KCLK_SRC); + reg &= ~OMAP_RTC_OSC_OSC32K_GZ_DISABLE; + reg |= OMAP_RTC_OSC_32KCLK_EN | OMAP_RTC_OSC_SEL_32KCLK_SRC; + rtc_writel(rtc, OMAP_RTC_OSC_REG, reg); } rtc->type->lock(rtc); @@ -898,8 +901,7 @@ static int omap_rtc_suspend(struct device *dev) rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0); rtc->type->lock(rtc); - /* Disable the clock/module */ - pm_runtime_put_sync(dev); + rtc->is_suspending = true; return 0; } @@ -908,9 +910,6 @@ static int omap_rtc_resume(struct device *dev) { struct omap_rtc *rtc = dev_get_drvdata(dev); - /* Enable the clock/module so that we can access the registers */ - pm_runtime_get_sync(dev); - rtc->type->unlock(rtc); if (device_may_wakeup(dev)) disable_irq_wake(rtc->irq_alarm); @@ -918,11 +917,34 @@ static int omap_rtc_resume(struct device *dev) rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, rtc->interrupts_reg); rtc->type->lock(rtc); + rtc->is_suspending = false; + return 0; } #endif -static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume); +#ifdef CONFIG_PM +static int omap_rtc_runtime_suspend(struct device *dev) +{ + struct omap_rtc *rtc = dev_get_drvdata(dev); + + if (rtc->is_suspending && !rtc->has_ext_clk) + return -EBUSY; + + return 0; +} + +static int omap_rtc_runtime_resume(struct device *dev) +{ + return 0; +} +#endif + +static const struct dev_pm_ops omap_rtc_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(omap_rtc_suspend, omap_rtc_resume) + SET_RUNTIME_PM_OPS(omap_rtc_runtime_suspend, + omap_rtc_runtime_resume, NULL) +}; static void omap_rtc_shutdown(struct platform_device *pdev) { |