diff options
Diffstat (limited to 'drivers/clocksource/time-orion.c')
| -rw-r--r-- | drivers/clocksource/time-orion.c | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c index 20066222f3f2..0b3ce0399c51 100644 --- a/drivers/clocksource/time-orion.c +++ b/drivers/clocksource/time-orion.c @@ -35,20 +35,6 @@ #define ORION_ONESHOT_MAX 0xfffffffe static void __iomem *timer_base; -static DEFINE_SPINLOCK(timer_ctrl_lock); - -/* - * Thread-safe access to TIMER_CTRL register - * (shared with watchdog timer) - */ -void orion_timer_ctrl_clrset(u32 clr, u32 set) -{ - spin_lock(&timer_ctrl_lock); - writel((readl(timer_base + TIMER_CTRL) & ~clr) | set, - timer_base + TIMER_CTRL); - spin_unlock(&timer_ctrl_lock); -} -EXPORT_SYMBOL(orion_timer_ctrl_clrset); /* * Free-running clocksource handling. @@ -68,7 +54,8 @@ static int orion_clkevt_next_event(unsigned long delta, { /* setup and enable one-shot timer */ writel(delta, timer_base + TIMER1_VAL); - orion_timer_ctrl_clrset(TIMER1_RELOAD_EN, TIMER1_EN); + atomic_io_modify(timer_base + TIMER_CTRL, + TIMER1_RELOAD_EN | TIMER1_EN, TIMER1_EN); return 0; } @@ -80,10 +67,13 @@ static void orion_clkevt_mode(enum clock_event_mode mode, /* setup and enable periodic timer at 1/HZ intervals */ writel(ticks_per_jiffy - 1, timer_base + TIMER1_RELOAD); writel(ticks_per_jiffy - 1, timer_base + TIMER1_VAL); - orion_timer_ctrl_clrset(0, TIMER1_RELOAD_EN | TIMER1_EN); + atomic_io_modify(timer_base + TIMER_CTRL, + TIMER1_RELOAD_EN | TIMER1_EN, + TIMER1_RELOAD_EN | TIMER1_EN); } else { /* disable timer */ - orion_timer_ctrl_clrset(TIMER1_RELOAD_EN | TIMER1_EN, 0); + atomic_io_modify(timer_base + TIMER_CTRL, + TIMER1_RELOAD_EN | TIMER1_EN, 0); } } @@ -131,7 +121,9 @@ static void __init orion_timer_init(struct device_node *np) /* setup timer0 as free-running clocksource */ writel(~0, timer_base + TIMER0_VAL); writel(~0, timer_base + TIMER0_RELOAD); - orion_timer_ctrl_clrset(0, TIMER0_RELOAD_EN | TIMER0_EN); + atomic_io_modify(timer_base + TIMER_CTRL, + TIMER0_RELOAD_EN | TIMER0_EN, + TIMER0_RELOAD_EN | TIMER0_EN); clocksource_mmio_init(timer_base + TIMER0_VAL, "orion_clocksource", clk_get_rate(clk), 300, 32, clocksource_mmio_readl_down); |