rtc-m48t59: allow externally mapped ioaddr

Add support for externally mapped ioaddr.  This is required on sparc32
as the ioaddr must be mapped with of_ioremap().

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/rtc/m48t59.h b/include/linux/rtc/m48t59.h
index 41798505d157..6fc961459b4a 100644
--- a/include/linux/rtc/m48t59.h
+++ b/include/linux/rtc/m48t59.h
@@ -55,6 +55,8 @@ struct m48t59_plat_data {
 
         int type; /* RTC model */
 
+        /* ioaddr mapped externally */
+        void __iomem *ioaddr;
         /* offset to RTC registers, automatically set according to the type */
         unsigned int offset;
 };