diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-03-11 17:42:29 +0000 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2017-04-07 16:23:03 +0200 |
| commit | 0d9298ea37b5f590f3d10ccc2d8d34d26af3fa84 (patch) | |
| tree | 3f6c890b6d0fde292f02fa58caf9fde538f2b184 /drivers/clocksource | |
| parent | 5fc63f9577322d11019b6d357f73f5ce9031f263 (diff) | |
clocksource/drivers/orion: Read clock rate once
Rather than reading the clock rate three times, read it once - we are
about to add a fourth usage.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/time-orion.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c index a28f496e97cf..c4818a5dc8e5 100644 --- a/drivers/clocksource/time-orion.c +++ b/drivers/clocksource/time-orion.c @@ -106,6 +106,7 @@ static struct irqaction orion_clkevt_irq = { static int __init orion_timer_init(struct device_node *np) { + unsigned long rate; struct clk *clk; int irq, ret; @@ -135,6 +136,8 @@ static int __init orion_timer_init(struct device_node *np) return -EINVAL; } + rate = clk_get_rate(clk); + /* setup timer0 as free-running clocksource */ writel(~0, timer_base + TIMER0_VAL); writel(~0, timer_base + TIMER0_RELOAD); @@ -142,15 +145,15 @@ static int __init orion_timer_init(struct device_node *np) TIMER0_RELOAD_EN | TIMER0_EN, TIMER0_RELOAD_EN | TIMER0_EN); - ret = clocksource_mmio_init(timer_base + TIMER0_VAL, "orion_clocksource", - clk_get_rate(clk), 300, 32, + ret = clocksource_mmio_init(timer_base + TIMER0_VAL, + "orion_clocksource", rate, 300, 32, clocksource_mmio_readl_down); if (ret) { pr_err("Failed to initialize mmio timer"); return ret; } - sched_clock_register(orion_read_sched_clock, 32, clk_get_rate(clk)); + sched_clock_register(orion_read_sched_clock, 32, rate); /* setup timer1 as clockevent timer */ ret = setup_irq(irq, &orion_clkevt_irq); @@ -162,7 +165,7 @@ static int __init orion_timer_init(struct device_node *np) ticks_per_jiffy = (clk_get_rate(clk) + HZ/2) / HZ; orion_clkevt.cpumask = cpumask_of(0); orion_clkevt.irq = irq; - clockevents_config_and_register(&orion_clkevt, clk_get_rate(clk), + clockevents_config_and_register(&orion_clkevt, rate, ORION_ONESHOT_MIN, ORION_ONESHOT_MAX); return 0; |