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authorViresh Kumar <viresh.kumar@linaro.org>2015-07-03 11:54:35 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2015-08-10 12:40:40 +0300
commit4134d29bfc4703d4000fc3a49ea4aeeae494d85a (patch)
tree1f499559158eca35aa2aa8cee6dcdda06c087cf9 /drivers/clocksource/tegra20_timer.c
parent6de6c977bdf61b1ca6f321aba468275c32952d79 (diff)
downloadlinux-4134d29bfc4703d4000fc3a49ea4aeeae494d85a.tar.xz
clockevents/drivers/tegra20: Migrate to new 'set-state' interface
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>
Diffstat (limited to 'drivers/clocksource/tegra20_timer.c')
-rw-r--r--drivers/clocksource/tegra20_timer.c45
1 files changed, 24 insertions, 21 deletions
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 5a112d72fc2d..6ebda1177e79 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)