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@@ -51,12 +51,12 @@ static inline uint32_t timer_read(void)
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{
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int delay = 100;
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- __raw_writel(1, TIMERS_VIRT_BASE + TMR_CVWR(0));
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+ __raw_writel(1, TIMERS_VIRT_BASE + TMR_CVWR(1));
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while (delay--)
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cpu_relax();
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- return __raw_readl(TIMERS_VIRT_BASE + TMR_CVWR(0));
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+ return __raw_readl(TIMERS_VIRT_BASE + TMR_CVWR(1));
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}
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unsigned long long notrace sched_clock(void)
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@@ -75,28 +75,51 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
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{
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struct clock_event_device *c = dev_id;
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- /* disable and clear pending interrupt status */
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- __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_IER(0));
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- __raw_writel(0x1, TIMERS_VIRT_BASE + TMR_ICR(0));
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+ /*
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+ * Clear pending interrupt status.
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+ */
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+ __raw_writel(0x01, TIMERS_VIRT_BASE + TMR_ICR(0));
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+
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+ /*
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+ * Disable timer 0.
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+ */
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+ __raw_writel(0x02, TIMERS_VIRT_BASE + TMR_CER);
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+
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c->event_handler(c);
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+
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return IRQ_HANDLED;
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}
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static int timer_set_next_event(unsigned long delta,
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struct clock_event_device *dev)
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{
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- unsigned long flags, next;
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+ unsigned long flags;
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local_irq_save(flags);
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- /* clear pending interrupt status and enable */
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+ /*
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+ * Disable timer 0.
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+ */
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+ __raw_writel(0x02, TIMERS_VIRT_BASE + TMR_CER);
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+
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+ /*
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+ * Clear and enable timer match 0 interrupt.
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+ */
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__raw_writel(0x01, TIMERS_VIRT_BASE + TMR_ICR(0));
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__raw_writel(0x01, TIMERS_VIRT_BASE + TMR_IER(0));
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- next = timer_read() + delta;
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- __raw_writel(next, TIMERS_VIRT_BASE + TMR_TN_MM(0, 0));
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+ /*
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+ * Setup new clockevent timer value.
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+ */
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+ __raw_writel(delta - 1, TIMERS_VIRT_BASE + TMR_TN_MM(0, 0));
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+
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+ /*
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+ * Enable timer 0.
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+ */
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+ __raw_writel(0x03, TIMERS_VIRT_BASE + TMR_CER);
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local_irq_restore(flags);
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+
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return 0;
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}
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@@ -145,23 +168,26 @@ static struct clocksource cksrc = {
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static void __init timer_config(void)
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{
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uint32_t ccr = __raw_readl(TIMERS_VIRT_BASE + TMR_CCR);
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- uint32_t cer = __raw_readl(TIMERS_VIRT_BASE + TMR_CER);
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- uint32_t cmr = __raw_readl(TIMERS_VIRT_BASE + TMR_CMR);
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- __raw_writel(cer & ~0x1, TIMERS_VIRT_BASE + TMR_CER); /* disable */
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+ __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_CER); /* disable */
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- ccr &= (cpu_is_mmp2()) ? TMR_CCR_CS_0(0) : TMR_CCR_CS_0(3);
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+ ccr &= (cpu_is_mmp2()) ? (TMR_CCR_CS_0(0) | TMR_CCR_CS_1(0)) :
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+ (TMR_CCR_CS_0(3) | TMR_CCR_CS_1(3));
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__raw_writel(ccr, TIMERS_VIRT_BASE + TMR_CCR);
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- /* free-running mode */
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- __raw_writel(cmr | 0x01, TIMERS_VIRT_BASE + TMR_CMR);
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+ /* set timer 0 to periodic mode, and timer 1 to free-running mode */
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+ __raw_writel(0x2, TIMERS_VIRT_BASE + TMR_CMR);
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- __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_PLCR(0)); /* free-running */
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+ __raw_writel(0x1, TIMERS_VIRT_BASE + TMR_PLCR(0)); /* periodic */
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__raw_writel(0x7, TIMERS_VIRT_BASE + TMR_ICR(0)); /* clear status */
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__raw_writel(0x0, TIMERS_VIRT_BASE + TMR_IER(0));
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- /* enable timer counter */
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- __raw_writel(cer | 0x01, TIMERS_VIRT_BASE + TMR_CER);
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+ __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_PLCR(1)); /* free-running */
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+ __raw_writel(0x7, TIMERS_VIRT_BASE + TMR_ICR(1)); /* clear status */
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+ __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_IER(1));
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+
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+ /* enable timer 1 counter */
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+ __raw_writel(0x2, TIMERS_VIRT_BASE + TMR_CER);
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}
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static struct irqaction timer_irq = {
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