Currently, Update Interrupt Enable is performed by emulating
it with either polling, or alarm interrupts. Some RTCs, however,
can directly provide Update Interrupts.
Signed-off-by: "Csókás, Bence" <csokas.bence@xxxxxxxxx>
---
drivers/rtc/interface.c | 8 ++++++++
include/linux/rtc.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 1b63111cdda2..9e1eac441c54 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -581,6 +581,14 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled)
#endif
}
+ if (rtc->ops && rtc->ops->update_irq_enable) {
+ err = rtc->ops->update_irq_enable(rtc->dev.parent, enabled);
+ if (!err)
+ rtc->uie_rtctimer.enabled = enabled;
+ if (err != -EINVAL)
+ goto out;
+ }
+
if (enabled) {
struct rtc_time tm;
ktime_t now, onesec;
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 5f8e438a0312..63dad8dfe278 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -68,6 +68,7 @@ struct rtc_class_ops {
int (*set_offset)(struct device *, long offset);
int (*param_get)(struct device *, struct rtc_param *param);
int (*param_set)(struct device *, struct rtc_param *param);
+ int (*update_irq_enable)(struct device *, unsigned int enabled);
};
struct rtc_device;
--
2.34.1
