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MIPS: jz4740: Migrate to new 'set-state' interface 

Migrate jz4740 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10601/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Viresh Kumar 2015-07-06 16:41:54 +05:30 committed by Ralf Baechle
parent 20a7835f8f
commit c87cbe0691
1 changed files with 27 additions and 19 deletions
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46
arch/mips/jz4740/time.c
View File

@ -58,7 +58,7 @@ static irqreturn_t jz4740_clockevent_irq(int irq, void *devid)
jz4740_timer_ack_full(TIMER_CLOCKEVENT);
if (cd->mode != CLOCK_EVT_MODE_PERIODIC)
if (!clockevent_state_periodic(cd))
jz4740_timer_disable(TIMER_CLOCKEVENT);
cd->event_handler(cd);
@ -66,24 +66,29 @@ static irqreturn_t jz4740_clockevent_irq(int irq, void *devid)
return IRQ_HANDLED;
}
static void jz4740_clockevent_set_mode(enum clock_event_mode mode,
struct clock_event_device *cd)
static int jz4740_clockevent_set_periodic(struct clock_event_device *evt)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
jz4740_timer_set_count(TIMER_CLOCKEVENT, 0);
jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick);
case CLOCK_EVT_MODE_RESUME:
jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
jz4740_timer_enable(TIMER_CLOCKEVENT);
break;
case CLOCK_EVT_MODE_ONESHOT:
case CLOCK_EVT_MODE_SHUTDOWN:
jz4740_timer_disable(TIMER_CLOCKEVENT);
break;
default:
break;
}
jz4740_timer_set_count(TIMER_CLOCKEVENT, 0);
jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick);
jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
jz4740_timer_enable(TIMER_CLOCKEVENT);
return 0;
}
static int jz4740_clockevent_resume(struct clock_event_device *evt)
{
jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
jz4740_timer_enable(TIMER_CLOCKEVENT);
return 0;
}
static int jz4740_clockevent_shutdown(struct clock_event_device *evt)
{
jz4740_timer_disable(TIMER_CLOCKEVENT);
return 0;
}
static int jz4740_clockevent_set_next(unsigned long evt,
@ -100,7 +105,10 @@ static struct clock_event_device jz4740_clockevent = {
.name = "jz4740-timer",
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = jz4740_clockevent_set_next,
.set_mode = jz4740_clockevent_set_mode,
.set_state_shutdown = jz4740_clockevent_shutdown,
.set_state_periodic = jz4740_clockevent_set_periodic,
.set_state_oneshot = jz4740_clockevent_shutdown,
.tick_resume = jz4740_clockevent_resume,
.rating = 200,
#ifdef CONFIG_MACH_JZ4740
.irq = JZ4740_IRQ_TCU0,