diff options
Diffstat (limited to 'drivers/timer/timer-uclass.c')
| -rw-r--r-- | drivers/timer/timer-uclass.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c index 02185912d5..aca421bdea 100644 --- a/drivers/timer/timer-uclass.c +++ b/drivers/timer/timer-uclass.c @@ -13,14 +13,14 @@ DECLARE_GLOBAL_DATA_PTR; /* * Implement a timer uclass to work with lib/time.c. The timer is usually - * a 32 bits free-running up counter. The get_rate() method is used to get + * a 32/64 bits free-running up counter. The get_rate() method is used to get * the input clock frequency of the timer. The get_count() method is used - * to get the current 32 bits count value. If the hardware is counting down, + * to get the current 64 bits count value. If the hardware is counting down, * the value should be inversed inside the method. There may be no real * tick, and no timer interrupt. */ -int timer_get_count(struct udevice *dev, unsigned long *count) +int timer_get_count(struct udevice *dev, u64 *count) { const struct timer_ops *ops = device_get_ops(dev); @@ -47,6 +47,15 @@ static int timer_pre_probe(struct udevice *dev) return 0; } +u64 timer_conv_64(u32 count) +{ + /* increment tbh if tbl has rolled over */ + if (count < gd->timebase_l) + gd->timebase_h++; + gd->timebase_l = count; + return ((u64)gd->timebase_h << 32) | gd->timebase_l; +} + UCLASS_DRIVER(timer) = { .id = UCLASS_TIMER, .name = "timer", |
