1 files changed, 75 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 49063ca2efcd..69cad1b653c1 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -1460,6 +1460,74 @@ static int cmos_set_rtc_time(struct rtc_time *rtc_tm)
 }
 #endif /* CONFIG_PCI */
 
+static void mostek_get_rtc_time(struct rtc_time *rtc_tm)
+{
+        void __iomem *regs = mstk48t02_regs;
+        u8 tmp;
+
+        spin_lock_irq(&mostek_lock);
+
+        tmp = mostek_read(regs + MOSTEK_CREG);
+        tmp |= MSTK_CREG_READ;
+        mostek_write(regs + MOSTEK_CREG, tmp);
+
+        rtc_tm->tm_sec = MSTK_REG_SEC(regs);
+        rtc_tm->tm_min = MSTK_REG_MIN(regs);
+        rtc_tm->tm_hour = MSTK_REG_HOUR(regs);
+        rtc_tm->tm_mday = MSTK_REG_DOM(regs);
+        rtc_tm->tm_mon = MSTK_REG_MONTH(regs);
+        rtc_tm->tm_year = MSTK_CVT_YEAR( MSTK_REG_YEAR(regs) );
+        rtc_tm->tm_wday = MSTK_REG_DOW(regs);
+
+        tmp = mostek_read(regs + MOSTEK_CREG);
+        tmp &= ~MSTK_CREG_READ;
+        mostek_write(regs + MOSTEK_CREG, tmp);
+
+        spin_unlock_irq(&mostek_lock);
+
+        rtc_tm->tm_mon--;
+        rtc_tm->tm_wday--;
+        rtc_tm->tm_year -= 1900;
+}
+
+static int mostek_set_rtc_time(struct rtc_time *rtc_tm)
+{
+        unsigned char mon, day, hrs, min, sec, wday;
+        void __iomem *regs = mstk48t02_regs;
+        unsigned int yrs;
+        u8 tmp;
+
+        yrs = rtc_tm->tm_year + 1900;
+        mon = rtc_tm->tm_mon + 1;
+        day = rtc_tm->tm_mday;
+        wday = rtc_tm->tm_wday + 1;
+        hrs = rtc_tm->tm_hour;
+        min = rtc_tm->tm_min;
+        sec = rtc_tm->tm_sec;
+
+        spin_lock_irq(&mostek_lock);
+
+        tmp = mostek_read(regs + MOSTEK_CREG);
+        tmp |= MSTK_CREG_WRITE;
+        mostek_write(regs + MOSTEK_CREG, tmp);
+
+        MSTK_SET_REG_SEC(regs, sec);
+        MSTK_SET_REG_MIN(regs, min);
+        MSTK_SET_REG_HOUR(regs, hrs);
+        MSTK_SET_REG_DOW(regs, wday);
+        MSTK_SET_REG_DOM(regs, day);
+        MSTK_SET_REG_MONTH(regs, mon);
+        MSTK_SET_REG_YEAR(regs, yrs - MSTK_YEAR_ZERO);
+
+        tmp = mostek_read(regs + MOSTEK_CREG);
+        tmp &= ~MSTK_CREG_WRITE;
+        mostek_write(regs + MOSTEK_CREG, tmp);
+
+        spin_unlock_irq(&mostek_lock);
+
+        return 0;
+}
+
 struct mini_rtc_ops {
         void (*get_rtc_time)(struct rtc_time *);
         int (*set_rtc_time)(struct rtc_time *);
@@ -1487,6 +1555,11 @@ static struct mini_rtc_ops cmos_rtc_ops = {
 };
 #endif /* CONFIG_PCI */
 
+static struct mini_rtc_ops mostek_rtc_ops = {
+        .get_rtc_time = mostek_get_rtc_time,
+        .set_rtc_time = mostek_set_rtc_time,
+};
+
 static struct mini_rtc_ops *mini_rtc_ops;
 
 static inline void mini_get_rtc_time(struct rtc_time *time)
@@ -1615,6 +1688,8 @@ static int __init rtc_mini_init(void)
         else if (ds1287_regs)
                 mini_rtc_ops = &cmos_rtc_ops;
 #endif /* CONFIG_PCI */
+        else if (mstk48t02_regs)
+                mini_rtc_ops = &mostek_rtc_ops;
         else
                 return -ENODEV;