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blackfin: bf60x: enable gptimer clock source

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Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
This commit is contained in:
Steven Miao
2012-05-16 18:11:10 +08:00
committed by Bob Liu
parent e578bbdeb8
commit 2879bb30d7
3 changed files with 211 additions and 3 deletions
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27
arch/blackfin/kernel/time-ts.c
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@@ -66,8 +66,14 @@ void __init setup_gptimer0(void)
{
disable_gptimers(TIMER0bit);
#ifdef CONFIG_BF60x
bfin_write16(TIMER_DATA_IMSK, 0);
set_gptimer_config(TIMER0_id, TIMER_OUT_DIS
| TIMER_MODE_PWM_CONT | TIMER_PULSE_HI | TIMER_IRQ_PER);
#else
set_gptimer_config(TIMER0_id, \
TIMER_OUT_DIS | TIMER_PERIOD_CNT | TIMER_MODE_PWM);
#endif
set_gptimer_period(TIMER0_id, -1);
set_gptimer_pwidth(TIMER0_id, -2);
SSYNC();
@@ -135,9 +141,15 @@ static void bfin_gptmr0_set_mode(enum clock_event_mode mode,
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC: {
#ifndef CONFIG_BF60x
set_gptimer_config(TIMER0_id, \
TIMER_OUT_DIS | TIMER_IRQ_ENA | \
TIMER_PERIOD_CNT | TIMER_MODE_PWM);
#else
set_gptimer_config(TIMER0_id, TIMER_OUT_DIS
| TIMER_MODE_PWM_CONT | TIMER_PULSE_HI | TIMER_IRQ_PER);
#endif
set_gptimer_period(TIMER0_id, get_sclk() / HZ);
set_gptimer_pwidth(TIMER0_id, get_sclk() / HZ - 1);
enable_gptimers(TIMER0bit);
@@ -145,8 +157,14 @@ static void bfin_gptmr0_set_mode(enum clock_event_mode mode,
}
case CLOCK_EVT_MODE_ONESHOT:
disable_gptimers(TIMER0bit);
#ifndef CONFIG_BF60x
set_gptimer_config(TIMER0_id, \
TIMER_OUT_DIS | TIMER_IRQ_ENA | TIMER_MODE_PWM);
#else
set_gptimer_config(TIMER0_id, TIMER_OUT_DIS | TIMER_MODE_PWM
| TIMER_PULSE_HI | TIMER_IRQ_WID_DLY);
#endif
set_gptimer_period(TIMER0_id, 0);
break;
case CLOCK_EVT_MODE_UNUSED:
@@ -160,7 +178,7 @@ static void bfin_gptmr0_set_mode(enum clock_event_mode mode,
static void bfin_gptmr0_ack(void)
{
set_gptimer_status(TIMER_GROUP1, TIMER_STATUS_TIMIL0);
clear_gptimer_intr(TIMER0_id);
}
static void __init bfin_gptmr0_init(void)
@@ -197,7 +215,7 @@ static struct clock_event_device clockevent_gptmr0 = {
.rating = 300,
.irq = IRQ_TIMER0,
.shift = 32,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = bfin_gptmr0_set_next_event,
.set_mode = bfin_gptmr0_set_mode,
};
@@ -307,6 +325,11 @@ void bfin_coretmr_clockevent_init(void)
unsigned int cpu = smp_processor_id();
struct clock_event_device *evt = &per_cpu(coretmr_events, cpu);
#ifdef CONFIG_SMP
evt->broadcast = smp_timer_broadcast;
#endif
#ifdef CONFIG_SMP
evt->broadcast = smp_timer_broadcast;
#endif