clocksource/drivers/orion: Read clock rate once (0d9298ea) · Commits · 戴 / test

drivers/clocksource/time-orion.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -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;