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MIPS: cevt-gt641xx: Migrate to new 'set-state' interface

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Migrate cevt-gt641xx 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: 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/10604/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Viresh Kumar 2015-07-06 16:41:57 +05:30 committed by Ralf Baechle
parent 9f95618f9f
commit c88f2fb4d8
1 changed files with 41 additions and 20 deletions
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53
arch/mips/kernel/cevt-gt641xx.c
View File

@ -64,8 +64,7 @@ static int gt641xx_timer0_set_next_event(unsigned long delta,
return 0;
}
static void gt641xx_timer0_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int gt641xx_timer0_shutdown(struct clock_event_device *evt)
{
u32 ctrl;
@ -73,21 +72,39 @@ static void gt641xx_timer0_set_mode(enum clock_event_mode mode,
ctrl = GT_READ(GT_TC_CONTROL_OFS);
ctrl &= ~(GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
ctrl |= GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK;
break;
case CLOCK_EVT_MODE_ONESHOT:
ctrl |= GT_TC_CONTROL_ENTC0_MSK;
break;
default:
break;
}
GT_WRITE(GT_TC_CONTROL_OFS, ctrl);
raw_spin_unlock(&gt641xx_timer_lock);
return 0;
}
static int gt641xx_timer0_set_oneshot(struct clock_event_device *evt)
{
u32 ctrl;
raw_spin_lock(&gt641xx_timer_lock);
ctrl = GT_READ(GT_TC_CONTROL_OFS);
ctrl &= ~GT_TC_CONTROL_SELTC0_MSK;
ctrl |= GT_TC_CONTROL_ENTC0_MSK;
GT_WRITE(GT_TC_CONTROL_OFS, ctrl);
raw_spin_unlock(&gt641xx_timer_lock);
return 0;
}
static int gt641xx_timer0_set_periodic(struct clock_event_device *evt)
{
u32 ctrl;
raw_spin_lock(&gt641xx_timer_lock);
ctrl = GT_READ(GT_TC_CONTROL_OFS);
ctrl |= GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK;
GT_WRITE(GT_TC_CONTROL_OFS, ctrl);
raw_spin_unlock(&gt641xx_timer_lock);
return 0;
}
static void gt641xx_timer0_event_handler(struct clock_event_device *dev)
@ -96,10 +113,14 @@ static void gt641xx_timer0_event_handler(struct clock_event_device *dev)
static struct clock_event_device gt641xx_timer0_clockevent = {
.name = "gt641xx-timer0",
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.features = CLOCK_EVT_FEAT_PERIODIC |
CLOCK_EVT_FEAT_ONESHOT,
.irq = GT641XX_TIMER0_IRQ,
.set_next_event = gt641xx_timer0_set_next_event,
.set_mode = gt641xx_timer0_set_mode,
.set_state_shutdown = gt641xx_timer0_shutdown,
.set_state_periodic = gt641xx_timer0_set_periodic,
.set_state_oneshot = gt641xx_timer0_set_oneshot,
.tick_resume = gt641xx_timer0_shutdown,
.event_handler = gt641xx_timer0_event_handler,
};