rtc: add support for STK17TA8 chip

This patch adds support for the Simtek STK17TA8 timekeeping chip.

The STK17TA8 is quite similar to the DS1553, but differs in register layout
and in various control bits in the registers.  I chose to make this a new
driver to avoid confusion in the code and to not get lost in #ifdefs.

Signed-off-by: Thomas Hommel <thomas.hommel@gefanuc.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
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/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 505f512ac254..9d8d40d5c8f7 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -308,6 +308,16 @@ config RTC_DRV_DS1553
           This driver can also be built as a module. If so, the module
           will be called rtc-ds1553.
 
+config RTC_DRV_STK17TA8
+        tristate "Simtek STK17TA8"
+        depends on RTC_CLASS
+        help
+          If you say yes here you get support for the
+          Simtek STK17TA8 timekeeping chip.
+
+          This driver can also be built as a module. If so, the module
+          will be called rtc-stk17ta8.
+
 config RTC_DRV_DS1742
         tristate "Dallas DS1742/1743"
         depends on RTC_CLASS