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path: root/drivers/clocksource/timer-prima2.c
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Diffstat (limited to 'drivers/clocksource/timer-prima2.c')
-rw-r--r--drivers/clocksource/timer-prima2.c47
1 files changed, 29 insertions, 18 deletions
diff --git a/drivers/clocksource/timer-prima2.c b/drivers/clocksource/timer-prima2.c
index 1a6b2d6356d6..a722aac7ac02 100644
--- a/drivers/clocksource/timer-prima2.c
+++ b/drivers/clocksource/timer-prima2.c
@@ -61,7 +61,8 @@ static irqreturn_t sirfsoc_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *ce = dev_id;
- WARN_ON(!(readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_STATUS) & BIT(0)));
+ WARN_ON(!(readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_STATUS) &
+ BIT(0)));
/* clear timer0 interrupt */
writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
@@ -77,9 +78,11 @@ static cycle_t sirfsoc_timer_read(struct clocksource *cs)
u64 cycles;
/* latch the 64-bit timer counter */
- writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT,
+ sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
cycles = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_HI);
- cycles = (cycles << 32) | readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
+ cycles = (cycles << 32) |
+ readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
return cycles;
}
@@ -89,11 +92,13 @@ static int sirfsoc_timer_set_next_event(unsigned long delta,
{
unsigned long now, next;
- writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT,
+ sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
now = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
next = now + delta;
writel_relaxed(next, sirfsoc_timer_base + SIRFSOC_TIMER_MATCH_0);
- writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT,
+ sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
now = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
return next - now > delta ? -ETIME : 0;
@@ -108,10 +113,12 @@ static void sirfsoc_timer_set_mode(enum clock_event_mode mode,
WARN_ON(1);
break;
case CLOCK_EVT_MODE_ONESHOT:
- writel_relaxed(val | BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
+ writel_relaxed(val | BIT(0),
+ sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
break;
case CLOCK_EVT_MODE_SHUTDOWN:
- writel_relaxed(val & ~BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
+ writel_relaxed(val & ~BIT(0),
+ sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_RESUME:
@@ -123,10 +130,13 @@ static void sirfsoc_clocksource_suspend(struct clocksource *cs)
{
int i;
- writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT,
+ sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
for (i = 0; i < SIRFSOC_TIMER_REG_CNT; i++)
- sirfsoc_timer_reg_val[i] = readl_relaxed(sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);
+ sirfsoc_timer_reg_val[i] =
+ readl_relaxed(sirfsoc_timer_base +
+ sirfsoc_timer_reg_list[i]);
}
static void sirfsoc_clocksource_resume(struct clocksource *cs)
@@ -134,10 +144,13 @@ static void sirfsoc_clocksource_resume(struct clocksource *cs)
int i;
for (i = 0; i < SIRFSOC_TIMER_REG_CNT - 2; i++)
- writel_relaxed(sirfsoc_timer_reg_val[i], sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);
+ writel_relaxed(sirfsoc_timer_reg_val[i],
+ sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);
- writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 2], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
- writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 1], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
+ writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 2],
+ sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
+ writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 1],
+ sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
}
static struct clock_event_device sirfsoc_clockevent = {
@@ -185,11 +198,8 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
unsigned long rate;
struct clk *clk;
- /* timer's input clock is io clock */
- clk = clk_get_sys("io", NULL);
-
+ clk = of_clk_get(np, 0);
BUG_ON(IS_ERR(clk));
-
rate = clk_get_rate(clk);
BUG_ON(rate < PRIMA2_CLOCK_FREQ);
@@ -202,7 +212,7 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
writel_relaxed(rate / PRIMA2_CLOCK_FREQ / 2 - 1,
- sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
+ sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
@@ -216,4 +226,5 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
sirfsoc_clockevent_init();
}
-CLOCKSOURCE_OF_DECLARE(sirfsoc_prima2_timer, "sirf,prima2-tick", sirfsoc_prima2_timer_init);
+CLOCKSOURCE_OF_DECLARE(sirfsoc_prima2_timer,
+ "sirf,prima2-tick", sirfsoc_prima2_timer_init);