diff options
Diffstat (limited to 'arch/avr32/kernel')
| -rw-r--r-- | arch/avr32/kernel/time.c | 45 |
1 files changed, 8 insertions, 37 deletions
diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c index 36a46c3..bf2f762 100644 --- a/arch/avr32/kernel/time.c +++ b/arch/avr32/kernel/time.c @@ -38,9 +38,15 @@ cycle_t __weak read_cycle_count(void) return (cycle_t)sysreg_read(COUNT); } +/* + * The architectural cycle count registers are a fine clocksource unless + * the system idle loop use sleep states like "idle": the CPU cycles + * measured by COUNT (and COMPARE) don't happen during sleep states. + * So we rate the clocksource using COUNT as very low quality. + */ struct clocksource __weak clocksource_avr32 = { .name = "avr32", - .rating = 350, + .rating = 50, .read = read_cycle_count, .mask = CLOCKSOURCE_MASK(32), .shift = 16, @@ -55,22 +61,6 @@ struct irqaction timer_irqaction = { .name = "timer", }; -/* - * By default we provide the null RTC ops - */ -static unsigned long null_rtc_get_time(void) -{ - return mktime(2007, 1, 1, 0, 0, 0); -} - -static int null_rtc_set_time(unsigned long sec) -{ - return 0; -} - -static unsigned long (*rtc_get_time)(void) = null_rtc_get_time; -static int (*rtc_set_time)(unsigned long) = null_rtc_set_time; - static void avr32_timer_ack(void) { u32 count; @@ -190,7 +180,7 @@ void __init time_init(void) */ sysreg_write(COMPARE, 0); - xtime.tv_sec = rtc_get_time(); + xtime.tv_sec = mktime(2007, 1, 1, 0, 0, 0); xtime.tv_nsec = 0; set_normalized_timespec(&wall_to_monotonic, @@ -212,22 +202,3 @@ void __init time_init(void) return; } } - -static struct sysdev_class timer_class = { - .name = "timer", -}; - -static struct sys_device timer_device = { - .id = 0, - .cls = &timer_class, -}; - -static int __init init_timer_sysfs(void) -{ - int err = sysdev_class_register(&timer_class); - if (!err) - err = sysdev_register(&timer_device); - return err; -} - -device_initcall(init_timer_sysfs); |