diff options
Diffstat (limited to 'arch/sparc64/kernel/time.c')
| -rw-r--r-- | arch/sparc64/kernel/time.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c index 49063ca2efc..69cad1b653c 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; |