diff options
Diffstat (limited to 'arch/sh/boards/sh03/rtc.c')
| -rw-r--r-- | arch/sh/boards/sh03/rtc.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/sh/boards/sh03/rtc.c b/arch/sh/boards/sh03/rtc.c deleted file mode 100644 index 0a9266bb51c5..000000000000 --- a/arch/sh/boards/sh03/rtc.c +++ /dev/null @@ -1,132 +0,0 @@ -/* - * linux/arch/sh/boards/sh03/rtc.c -- CTP/PCI-SH03 on-chip RTC support - * - * Copyright (C) 2004 Saito.K & Jeanne(ksaito@interface.co.jp) - * - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/time.h> -#include <linux/bcd.h> -#include <linux/rtc.h> -#include <linux/spinlock.h> -#include <asm/io.h> -#include <asm/rtc.h> - -#define RTC_BASE 0xb0000000 -#define RTC_SEC1 (RTC_BASE + 0) -#define RTC_SEC10 (RTC_BASE + 1) -#define RTC_MIN1 (RTC_BASE + 2) -#define RTC_MIN10 (RTC_BASE + 3) -#define RTC_HOU1 (RTC_BASE + 4) -#define RTC_HOU10 (RTC_BASE + 5) -#define RTC_WEE1 (RTC_BASE + 6) -#define RTC_DAY1 (RTC_BASE + 7) -#define RTC_DAY10 (RTC_BASE + 8) -#define RTC_MON1 (RTC_BASE + 9) -#define RTC_MON10 (RTC_BASE + 10) -#define RTC_YEA1 (RTC_BASE + 11) -#define RTC_YEA10 (RTC_BASE + 12) -#define RTC_YEA100 (RTC_BASE + 13) -#define RTC_YEA1000 (RTC_BASE + 14) -#define RTC_CTL (RTC_BASE + 15) -#define RTC_BUSY 1 -#define RTC_STOP 2 - -extern spinlock_t rtc_lock; - -unsigned long get_cmos_time(void) -{ - unsigned int year, mon, day, hour, min, sec; - - spin_lock(&rtc_lock); - again: - do { - sec = (ctrl_inb(RTC_SEC1) & 0xf) + (ctrl_inb(RTC_SEC10) & 0x7) * 10; - min = (ctrl_inb(RTC_MIN1) & 0xf) + (ctrl_inb(RTC_MIN10) & 0xf) * 10; - hour = (ctrl_inb(RTC_HOU1) & 0xf) + (ctrl_inb(RTC_HOU10) & 0xf) * 10; - day = (ctrl_inb(RTC_DAY1) & 0xf) + (ctrl_inb(RTC_DAY10) & 0xf) * 10; - mon = (ctrl_inb(RTC_MON1) & 0xf) + (ctrl_inb(RTC_MON10) & 0xf) * 10; - year = (ctrl_inb(RTC_YEA1) & 0xf) + (ctrl_inb(RTC_YEA10) & 0xf) * 10 - + (ctrl_inb(RTC_YEA100 ) & 0xf) * 100 - + (ctrl_inb(RTC_YEA1000) & 0xf) * 1000; - } while (sec != (ctrl_inb(RTC_SEC1) & 0xf) + (ctrl_inb(RTC_SEC10) & 0x7) * 10); - if (year == 0 || mon < 1 || mon > 12 || day > 31 || day < 1 || - hour > 23 || min > 59 || sec > 59) { - printk(KERN_ERR - "SH-03 RTC: invalid value, resetting to 1 Jan 2000\n"); - printk("year=%d, mon=%d, day=%d, hour=%d, min=%d, sec=%d\n", - year, mon, day, hour, min, sec); - - ctrl_outb(0, RTC_SEC1); ctrl_outb(0, RTC_SEC10); - ctrl_outb(0, RTC_MIN1); ctrl_outb(0, RTC_MIN10); - ctrl_outb(0, RTC_HOU1); ctrl_outb(0, RTC_HOU10); - ctrl_outb(6, RTC_WEE1); - ctrl_outb(1, RTC_DAY1); ctrl_outb(0, RTC_DAY10); - ctrl_outb(1, RTC_MON1); ctrl_outb(0, RTC_MON10); - ctrl_outb(0, RTC_YEA1); ctrl_outb(0, RTC_YEA10); - ctrl_outb(0, RTC_YEA100); - ctrl_outb(2, RTC_YEA1000); - ctrl_outb(0, RTC_CTL); - goto again; - } - - spin_unlock(&rtc_lock); - return mktime(year, mon, day, hour, min, sec); -} - -void sh03_rtc_gettimeofday(struct timespec *tv) -{ - - tv->tv_sec = get_cmos_time(); - tv->tv_nsec = 0; -} - -static int set_rtc_mmss(unsigned long nowtime) -{ - int retval = 0; - int real_seconds, real_minutes, cmos_minutes; - int i; - - /* gets recalled with irq locally disabled */ - spin_lock(&rtc_lock); - for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */ - if (!(ctrl_inb(RTC_CTL) & RTC_BUSY)) - break; - cmos_minutes = (ctrl_inb(RTC_MIN1) & 0xf) + (ctrl_inb(RTC_MIN10) & 0xf) * 10; - real_seconds = nowtime % 60; - real_minutes = nowtime / 60; - if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1) - real_minutes += 30; /* correct for half hour time zone */ - real_minutes %= 60; - - if (abs(real_minutes - cmos_minutes) < 30) { - ctrl_outb(real_seconds % 10, RTC_SEC1); - ctrl_outb(real_seconds / 10, RTC_SEC10); - ctrl_outb(real_minutes % 10, RTC_MIN1); - ctrl_outb(real_minutes / 10, RTC_MIN10); - } else { - printk(KERN_WARNING - "set_rtc_mmss: can't update from %d to %d\n", - cmos_minutes, real_minutes); - retval = -1; - } - spin_unlock(&rtc_lock); - - return retval; -} - -int sh03_rtc_settimeofday(const time_t secs) -{ - unsigned long nowtime = secs; - - return set_rtc_mmss(nowtime); -} - -void sh03_time_init(void) -{ - rtc_sh_get_time = sh03_rtc_gettimeofday; - rtc_sh_set_time = sh03_rtc_settimeofday; -} |