Commit adb17a05 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: expose RTC_FEATURE_UPDATE_INTERRUPT 



Set RTC_FEATURE_UPDATE_INTERRUPT by default and clear it when it is not
supported.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211018152337.78732-1-alexandre.belloni@bootlin.com
parent 7d7234a4

drivers/rtc/class.c

+4 −0
Original line number Diff line number Diff line
@@ -232,6 +232,7 @@ static struct rtc_device *rtc_allocate_device(void) 
	rtc->pie_enabled = 0;



	set_bit(RTC_FEATURE_ALARM, rtc->features);

	set_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);



	return rtc;

}
@@ -389,6 +390,9 @@ int __devm_rtc_register_device(struct module *owner, struct rtc_device *rtc) 
	if (!rtc->ops->set_alarm)

		clear_bit(RTC_FEATURE_ALARM, rtc->features);



	if (rtc->uie_unsupported)

		clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);



	if (rtc->ops->set_offset)

		set_bit(RTC_FEATURE_CORRECTION, rtc->features);

drivers/rtc/interface.c

+2 −1
Original line number Diff line number Diff line
@@ -561,7 +561,8 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) 
	if (rtc->uie_rtctimer.enabled == enabled)

		goto out;



	if (rtc->uie_unsupported || !test_bit(RTC_FEATURE_ALARM, rtc->features)) {

	if (!test_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features) ||

	    !test_bit(RTC_FEATURE_ALARM, rtc->features)) {

		mutex_unlock(&rtc->ops_lock);

#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL

		return rtc_dev_update_irq_enable_emul(rtc, enabled);