From: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Stephen Warren <swarren@xxxxxxxxxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
drivers/clocksource/tegra20_timer.c | 45 ++++++++++++++++++++-----------------
1 file changed, 24 insertions(+), 21 deletions(-)
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 5a112d7..6ebda11 100644
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -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)
--
1.9.1
--
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