1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/mc146818rtc.h b/include/linux/mc146818rtc.h
index 432b2fa24929..bdc01127dced 100644
--- a/include/linux/mc146818rtc.h
+++ b/include/linux/mc146818rtc.h
@@ -18,6 +18,16 @@
 #ifdef __KERNEL__
 #include <linux/spinlock.h>             /* spinlock_t */
 extern spinlock_t rtc_lock;             /* serialize CMOS RAM access */
+
+/* Some RTCs extend the mc146818 register set to support alarms of more
+ * than 24 hours in the future; or dates that include a century code.
+ * This platform_data structure can pass this information to the driver.
+ */
+struct cmos_rtc_board_info {
+        u8      rtc_day_alarm;          /* zero, or register index */
+        u8      rtc_mon_alarm;          /* zero, or register index */
+        u8      rtc_century;            /* zero, or register index */
+};
 #endif
 
 /**********************************************************************