OMAP: add TI TWL92330/Menelaus Power Management chip driver

Add Texas Instruments TWL92330/Menelaus Power Management chip driver.  This
includes voltage regulators, Dual slot memory card tranceivers and
real-time clock(RTC).

The support for RTC is integrated with this driver only; it is not separate
module.  Passes 'rtctest' on OMAP H4 EVM, other than lack of "periodic"
(1/N second) IRQs.  System wakeup alarms (from suspend-to-RAM) work too.

The battery keeps the RTC active over power off, so once you set clock
(rdate/ntpdate/etc, then "hwclock -w") then RTC_HCTOSYS at boot time will
behave as expected.

Cc: "Jean Delvare" <khali@linux-fr.org>
Cc: "Tony Lindgren" <tony@atomide.com>
Cc: "David Brownell" <david-b@pacbell.net>
Signed-off-by: Trilok Soni <soni.trilok@gmail.com>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 6210280135c8..cea401feb0f3 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -231,6 +231,15 @@ config RTC_DRV_M41T80_WDT
           If you say Y here you will get support for the
           watchdog timer in ST M41T80 RTC chips series.
 
+config RTC_DRV_TWL92330
+        boolean "TI TWL92330/Menelaus"
+        depends on RTC_CLASS && I2C && MENELAUS
+        help
+          If you say yes here you get support for the RTC on the
+          TWL92330 "Menelaus" power mangement chip, used with OMAP2
+          platforms.  The support is integrated with the rest of
+          the Menelaus driver; it's not separate module.
+
 comment "SPI RTC drivers"
         depends on RTC_CLASS && SPI_MASTER