1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_rtc_internal.h b/drivers/virtio/virtio_rtc_internal.h
index 2e589903d04f..296afee6719b 100644
--- a/drivers/virtio/virtio_rtc_internal.h
+++ b/drivers/virtio/virtio_rtc_internal.h
@@ -9,6 +9,8 @@
 #ifndef _VIRTIO_RTC_INTERNAL_H_
 #define _VIRTIO_RTC_INTERNAL_H_
 
+#include <linux/device.h>
+#include <linux/err.h>
 #include <linux/ptp_clock_kernel.h>
 #include <linux/types.h>
 
@@ -21,6 +23,16 @@ int viortc_read_cross(struct viortc_dev *viortc, u16 vio_clk_id, u8 hw_counter,
 		      u64 *reading, u64 *cycles);
 int viortc_cross_cap(struct viortc_dev *viortc, u16 vio_clk_id, u8 hw_counter,
 		     bool *supported);
+int viortc_read_alarm(struct viortc_dev *viortc, u16 vio_clk_id,
+		      u64 *alarm_time, bool *enabled);
+int viortc_set_alarm(struct viortc_dev *viortc, u16 vio_clk_id, u64 alarm_time,
+		     bool alarm_enable);
+int viortc_set_alarm_enabled(struct viortc_dev *viortc, u16 vio_clk_id,
+			     bool alarm_enable);
+
+struct viortc_class;
+
+struct viortc_class *viortc_class_from_dev(struct device *dev);
 
 /* PTP IFs */
 
@@ -67,4 +79,44 @@ static inline int viortc_ptp_unregister(struct viortc_ptp_clock *vio_ptp,
  */
 int viortc_hw_xtstamp_params(u8 *hw_counter, enum clocksource_ids *cs_id);
 
+/* RTC class IFs */
+
+#if IS_ENABLED(CONFIG_VIRTIO_RTC_CLASS)
+
+void viortc_class_alarm(struct viortc_class *viortc_class, u16 vio_clk_id);
+
+void viortc_class_stop(struct viortc_class *viortc_class);
+
+int viortc_class_register(struct viortc_class *viortc_class);
+
+struct viortc_class *viortc_class_init(struct viortc_dev *viortc,
+				       u16 vio_clk_id, bool have_alarm,
+				       struct device *parent_dev);
+
+#else /* CONFIG_VIRTIO_RTC_CLASS */
+
+static inline void viortc_class_alarm(struct viortc_class *viortc_class,
+				      u16 vio_clk_id)
+{
+}
+
+static inline void viortc_class_stop(struct viortc_class *viortc_class)
+{
+}
+
+static inline int viortc_class_register(struct viortc_class *viortc_class)
+{
+	return -ENODEV;
+}
+
+static inline struct viortc_class *viortc_class_init(struct viortc_dev *viortc,
+						     u16 vio_clk_id,
+						     bool have_alarm,
+						     struct device *parent_dev)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+#endif /* CONFIG_VIRTIO_RTC_CLASS */
+
 #endif /* _VIRTIO_RTC_INTERNAL_H_ */