rtc: ds1302 rtc support

This adds a basic ds1302 RTC driver, which is basically a cleanup and move
of the in-tree SH SecureEdge5410 code (which is currently located in
arch/sh/board/snapgear/rtc.c) to drivers/rtc.

This aims to be a building block that the M32R and CRIS code can be worked
on top of, so we can get rid of drivers/char/ds1302.c and
arch/cris/arch-v10/drivers/ds1302.c respectively, though more work is
needed for this.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 842d8a5616ba..0cc448c0eddd 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -306,6 +306,12 @@ config RTC_DRV_DS1216
         help
           If you say yes here you get support for the Dallas DS1216 RTC chips.
 
+config RTC_DRV_DS1302
+        tristate "Dallas DS1302"
+        depends on SH_SECUREEDGE5410
+        help
+          If you say yes here you get support for the Dallas DS1302 RTC chips.
+
 config RTC_DRV_DS1553
         tristate "Maxim/Dallas DS1553"
         help