rtc: rc5t583: add ricoh rc5t583 RTC driver

Add an RTC driver for the RTC device on Ricoh MFD Rc5t583.  Ricoh RTC has
3 types of alarms.  The current patch adds support for the Y-Alarm of
RC5t583 RTC.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/include/linux/mfd/rc5t583.h b/include/linux/mfd/rc5t583.h
index 3661c59aa1e9..36c242e52ef1 100644
--- a/include/linux/mfd/rc5t583.h
+++ b/include/linux/mfd/rc5t583.h
@@ -146,6 +146,28 @@
 #define RC5T583_GPIO_MON_IOIN   0xAB
 #define RC5T583_GPIO_GPOFUNC    0xAC
 
+/* RTC registers */
+#define RC5T583_RTC_SEC         0xE0
+#define RC5T583_RTC_MIN         0xE1
+#define RC5T583_RTC_HOUR        0xE2
+#define RC5T583_RTC_WDAY        0xE3
+#define RC5T583_RTC_DAY         0xE4
+#define RC5T583_RTC_MONTH       0xE5
+#define RC5T583_RTC_YEAR        0xE6
+#define RC5T583_RTC_ADJ         0xE7
+#define RC5T583_RTC_AW_MIN      0xE8
+#define RC5T583_RTC_AW_HOUR     0xE9
+#define RC5T583_RTC_AW_WEEK     0xEA
+#define RC5T583_RTC_AD_MIN      0xEB
+#define RC5T583_RTC_AD_HOUR     0xEC
+#define RC5T583_RTC_CTL1        0xED
+#define RC5T583_RTC_CTL2        0xEE
+#define RC5T583_RTC_AY_MIN      0xF0
+#define RC5T583_RTC_AY_HOUR     0xF1
+#define RC5T583_RTC_AY_DAY      0xF2
+#define RC5T583_RTC_AY_MONTH 0xF3
+#define RC5T583_RTC_AY_YEAR     0xF4
+
 /* RICOH_RC5T583 IRQ definitions */
 enum {
         RC5T583_IRQ_ONKEY,