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clockevents/drivers/tegra20: Migrate to new 'set-state' interface

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Migrate tegra20 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.

Cc: Thierry Reding <treding@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Viresh Kumar 2015-07-03 14:24:35 +05:30 committed by Daniel Lezcano
parent 6de6c977bd
commit 4134d29bfc
1 changed files with 24 additions and 21 deletions
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45
drivers/clocksource/tegra20_timer.c
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@ -72,33 +72,36 @@ static int tegra_timer_set_next_event(unsigned long cycles,
return 0;
}
static void tegra_timer_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static inline void timer_shutdown(struct clock_event_device *evt)
{
u32 reg;
timer_writel(0, TIMER3_BASE + TIMER_PTV);
}
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
reg = 0xC0000000 | ((1000000/HZ)-1);
timer_writel(reg, TIMER3_BASE + TIMER_PTV);
break;
case CLOCK_EVT_MODE_ONESHOT:
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_RESUME:
break;
}
static int tegra_timer_shutdown(struct clock_event_device *evt)
{
timer_shutdown(evt);
return 0;
}
static int tegra_timer_set_periodic(struct clock_event_device *evt)
{
u32 reg = 0xC0000000 | ((1000000 / HZ) - 1);
timer_shutdown(evt);
timer_writel(reg, TIMER3_BASE + TIMER_PTV);
return 0;
}
static struct clock_event_device tegra_clockevent = {
.name = "timer0",
.rating = 300,
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
.set_next_event = tegra_timer_set_next_event,
.set_mode = tegra_timer_set_mode,
.name = "timer0",
.rating = 300,
.features = CLOCK_EVT_FEAT_ONESHOT |
CLOCK_EVT_FEAT_PERIODIC,
.set_next_event = tegra_timer_set_next_event,
.set_state_shutdown = tegra_timer_shutdown,
.set_state_periodic = tegra_timer_set_periodic,
.set_state_oneshot = tegra_timer_shutdown,
.tick_resume = tegra_timer_shutdown,
};
static u64 notrace tegra_read_sched_clock(void)