diff options
Diffstat (limited to 'drivers/clocksource/vt8500_timer.c')
| -rw-r--r-- | drivers/clocksource/vt8500_timer.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c index ddb409274f45..b15069483fbd 100644 --- a/drivers/clocksource/vt8500_timer.c +++ b/drivers/clocksource/vt8500_timer.c @@ -121,38 +121,48 @@ static struct irqaction irq = { .dev_id = &clockevent, }; -static void __init vt8500_timer_init(struct device_node *np) +static int __init vt8500_timer_init(struct device_node *np) { - int timer_irq; + int timer_irq, ret; regbase = of_iomap(np, 0); if (!regbase) { pr_err("%s: Missing iobase description in Device Tree\n", __func__); - return; + return -ENXIO; } + timer_irq = irq_of_parse_and_map(np, 0); if (!timer_irq) { pr_err("%s: Missing irq description in Device Tree\n", __func__); - return; + return -EINVAL; } writel(1, regbase + TIMER_CTRL_VAL); writel(0xf, regbase + TIMER_STATUS_VAL); writel(~0, regbase + TIMER_MATCH_VAL); - if (clocksource_register_hz(&clocksource, VT8500_TIMER_HZ)) + ret = clocksource_register_hz(&clocksource, VT8500_TIMER_HZ); + if (ret) { pr_err("%s: vt8500_timer_init: clocksource_register failed for %s\n", - __func__, clocksource.name); + __func__, clocksource.name); + return ret; + } clockevent.cpumask = cpumask_of(0); - if (setup_irq(timer_irq, &irq)) + ret = setup_irq(timer_irq, &irq); + if (ret) { pr_err("%s: setup_irq failed for %s\n", __func__, clockevent.name); + return ret; + } + clockevents_config_and_register(&clockevent, VT8500_TIMER_HZ, MIN_OSCR_DELTA * 2, 0xf0000000); + + return 0; } CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init); |