rtc: tps65910: add RTC driver for TPS65910 PMIC RTC

TPS65910 PMIC is a MFD with RTC as one of the device.  Adding RTC driver
for supporting RTC device present inside TPS65910 PMIC.

Only support for RTC alarm is implemented as part of this patch.

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

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h
index 9bf8767818b4..ba2eb25f1094 100644
--- a/include/linux/mfd/tps65910.h
+++ b/include/linux/mfd/tps65910.h
@@ -132,6 +132,16 @@
  *
  */
 
+/* RTC_CTRL_REG bitfields */
+#define TPS65910_RTC_CTRL_STOP_RTC                      0x01 /*0=stop, 1=run */
+#define TPS65910_RTC_CTRL_GET_TIME                      0x40
+
+/* RTC_STATUS_REG bitfields */
+#define TPS65910_RTC_STATUS_ALARM               0x40
+
+/* RTC_INTERRUPTS_REG bitfields */
+#define TPS65910_RTC_INTERRUPTS_EVERY           0x03
+#define TPS65910_RTC_INTERRUPTS_IT_ALARM        0x08
 
 /*Register BCK1  (0x80) register.RegisterDescription */
 #define BCK1_BCKUP_MASK                                 0xFF