summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-spear/time.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-spear/time.c')
-rw-r--r--arch/arm/plat-spear/time.c47
1 files changed, 7 insertions, 40 deletions
diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index a1025d3..ab21165 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -58,6 +58,11 @@
#define INT_STATUS 0x1
+/*
+ * Minimum clocksource/clockevent timer range in seconds
+ */
+#define SPEAR_MIN_RANGE 4
+
static __iomem void *gpt_base;
static struct clk *gpt_clk;
@@ -66,44 +71,6 @@ static void clockevent_set_mode(enum clock_event_mode mode,
static int clockevent_next_event(unsigned long evt,
struct clock_event_device *clk_event_dev);
-/*
- * Following clocksource_set_clock and clockevent_set_clock picked
- * from arch/mips/kernel/time.c
- */
-
-void __init clocksource_set_clock(struct clocksource *cs, unsigned int clock)
-{
- u64 temp;
- u32 shift;
-
- /* Find a shift value */
- for (shift = 32; shift > 0; shift--) {
- temp = (u64) NSEC_PER_SEC << shift;
- do_div(temp, clock);
- if ((temp >> 32) == 0)
- break;
- }
- cs->shift = shift;
- cs->mult = (u32) temp;
-}
-
-void __init clockevent_set_clock(struct clock_event_device *cd,
- unsigned int clock)
-{
- u64 temp;
- u32 shift;
-
- /* Find a shift value */
- for (shift = 32; shift > 0; shift--) {
- temp = (u64) clock << shift;
- do_div(temp, NSEC_PER_SEC);
- if ((temp >> 32) == 0)
- break;
- }
- cd->shift = shift;
- cd->mult = (u32) temp;
-}
-
static cycle_t clocksource_read_cycles(struct clocksource *cs)
{
return (cycle_t) readw(gpt_base + COUNT(CLKSRC));
@@ -138,7 +105,7 @@ static void spear_clocksource_init(void)
val |= CTRL_ENABLE ;
writew(val, gpt_base + CR(CLKSRC));
- clocksource_set_clock(&clksrc, tick_rate);
+ clocksource_calc_mult_shift(&clksrc, tick_rate, SPEAR_MIN_RANGE);
/* register the clocksource */
clocksource_register(&clksrc);
@@ -233,7 +200,7 @@ static void __init spear_clockevent_init(void)
tick_rate = clk_get_rate(gpt_clk);
tick_rate >>= CTRL_PRESCALER16;
- clockevent_set_clock(&clkevt, tick_rate);
+ clockevents_calc_mult_shift(&clkevt, tick_rate, SPEAR_MIN_RANGE);
clkevt.max_delta_ns = clockevent_delta2ns(0xfff0,
&clkevt);
OpenPOWER on IntegriCloud