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authorDavid S. Miller <davem@sunset.davemloft.net>2007-07-27 14:40:27 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-30 00:27:32 -0700
commita0afaa6ab12cf696d170c22a8fdfd88c3e33555c (patch)
tree2c0c6cafa7ae8d95e8828d7f9bda0034b2e4452c /arch/sparc64/kernel/time.c
parent3961bae0ac030a70ae2e0578270203889021f1a1 (diff)
[SPARC64]: Handle mostek clock type in mini_rtc driver.
Now that drivers/sbus/char/rtc.c is sparc32 only, we need this. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/time.c')
-rw-r--r--arch/sparc64/kernel/time.c75
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;