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Diffstat (limited to 'include/linux/mc146818rtc.h')
-rw-r--r--include/linux/mc146818rtc.h10
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
/**********************************************************************