#include <linux/sched.h>
#include <linux/time.h>
#include <linux/interrupt.h>
+#include <linux/clocksource.h>
#include <asm/hw_irq.h>
#include <asm/system.h>
extern unsigned long sn_rtc_cycles_per_second;
-static struct time_interpolator sn2_interpolator = {
- .drift = -1,
- .shift = 10,
- .mask = (1LL << 55) - 1,
- .source = TIME_SOURCE_MMIO64
+static void __iomem *sn2_mc;
+
+static cycle_t read_sn2(void)
+{
+ return (cycle_t)readq(sn2_mc);
+}
+
+static struct clocksource clocksource_sn2 = {
+ .name = "sn2_rtc",
+ .rating = 300,
+ .read = read_sn2,
+ .mask = (1LL << 55) - 1,
+ .mult = 0,
+ .shift = 10,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/*
void __init sn_timer_init(void)
{
- sn2_interpolator.frequency = sn_rtc_cycles_per_second;
- sn2_interpolator.addr = RTC_COUNTER_ADDR;
- register_time_interpolator(&sn2_interpolator);
+ sn2_mc = RTC_COUNTER_ADDR;
+ clocksource_sn2.fsys_mmio = RTC_COUNTER_ADDR;
+ clocksource_sn2.mult = clocksource_hz2mult(sn_rtc_cycles_per_second,
+ clocksource_sn2.shift);
+ clocksource_register(&clocksource_sn2);
ia64_udelay = &ia64_sn_udelay;
}