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Diffstat (limited to 'arch/mips/sgi-ip27/ip27-timer.c')
-rw-r--r--arch/mips/sgi-ip27/ip27-timer.c38
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)