diff options
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-timer.c')
| -rw-r--r-- | arch/mips/sgi-ip27/ip27-timer.c | 38 |
1 files changed, 13 insertions, 25 deletions
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c index 8c3c78c63cc..b7b3479b6bc 100644 --- a/arch/mips/sgi-ip27/ip27-timer.c +++ b/arch/mips/sgi-ip27/ip27-timer.c @@ -40,7 +40,6 @@ #define TICK_SIZE (tick_nsec / 1000) static unsigned long ct_cur[NR_CPUS]; /* What counter should be at next timer irq */ -static long last_rtc_update; /* Last time the rtc clock got updated */ #if 0 static int set_rtc_mmss(unsigned long nowtime) @@ -113,23 +112,6 @@ again: update_process_times(user_mode(get_irq_regs())); - /* - * If we have an externally synchronized Linux clock, then update - * RTC clock accordingly every ~11 minutes. Set_rtc_mmss() has to be - * called as close as possible to when a second starts. - */ - if (ntp_synced() && - xtime.tv_sec > last_rtc_update + 660 && - (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 && - (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) { - if (rtc_mips_set_time(xtime.tv_sec) == 0) { - last_rtc_update = xtime.tv_sec; - } else { - last_rtc_update = xtime.tv_sec - 600; - /* do it again in 60 s */ - } - } - write_sequnlock(&xtime_lock); irq_exit(); } @@ -141,7 +123,7 @@ again: #include <asm/sn/sn0/hubio.h> #include <asm/pci/bridge.h> -static __init unsigned long get_m48t35_time(void) +unsigned long read_persistent_clock(void) { unsigned int year, month, date, hour, min, sec; struct m48t35_rtc *rtc; @@ -218,17 +200,23 @@ void __init plat_timer_setup(struct irqaction *irq) setup_irq(irqno, &rt_irqaction); } -static cycle_t ip27_hpt_read(void) +static cycle_t hub_rt_read(void) { return REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT); } -void __init ip27_time_init(void) +struct clocksource ht_rt_clocksource = { + .name = "HUB", + .rating = 200, + .read = hub_rt_read, + .mask = CLOCKSOURCE_MASK(52), + .shift = 32, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +void __init plat_time_init(void) { - clocksource_mips.read = ip27_hpt_read; - mips_hpt_frequency = CYCLES_PER_SEC; - xtime.tv_sec = get_m48t35_time(); - xtime.tv_nsec = 0; + clocksource_register(&ht_rt_clocksource); } void __init cpu_time_init(void) |