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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-06-30 11:00:48 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2015-08-10 11:40:25 +0200 |
| commit | 3465f60917f2dbbc227e2a2e7913ad75bb604c12 (patch) | |
| tree | 40407a43feb5b8dfc227184061d2b616740ba226 /drivers/clocksource/asm9260_timer.c | |
| parent | clockevents/drivers/sh_cmt: Remove obsolete sh-cmt-48-gen2 platform_device_id... (diff) | |
| download | linux-3465f60917f2dbbc227e2a2e7913ad75bb604c12.tar.xz linux-3465f60917f2dbbc227e2a2e7913ad75bb604c12.zip | |
clockevents/drivers/asm9260: Migrate to new 'set-state' interface
Migrate asm9260 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
As a default the timer was stopped when entering in the set_mode(RESUME)
function, now this is done explicitly with the new API.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Cc: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/clocksource/asm9260_timer.c | 64 |
1 files changed, 39 insertions, 25 deletions
diff --git a/drivers/clocksource/asm9260_timer.c b/drivers/clocksource/asm9260_timer.c index 4c2ba59897e8..217438d39eb3 100644 --- a/drivers/clocksource/asm9260_timer.c +++ b/drivers/clocksource/asm9260_timer.c @@ -120,38 +120,52 @@ static int asm9260_timer_set_next_event(unsigned long delta, return 0; } -static void asm9260_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) +static inline void __asm9260_timer_shutdown(struct clock_event_device *evt) { /* stop timer0 */ writel_relaxed(BM_C0_EN, priv.base + HW_TCR + CLR_REG); +} + +static int asm9260_timer_shutdown(struct clock_event_device *evt) +{ + __asm9260_timer_shutdown(evt); + return 0; +} + +static int asm9260_timer_set_oneshot(struct clock_event_device *evt) +{ + __asm9260_timer_shutdown(evt); + + /* enable reset and stop on match */ + writel_relaxed(BM_MCR_RES_EN(0) | BM_MCR_STOP_EN(0), + priv.base + HW_MCR + SET_REG); + return 0; +} + +static int asm9260_timer_set_periodic(struct clock_event_device *evt) +{ + __asm9260_timer_shutdown(evt); - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - /* disable reset and stop on match */ - writel_relaxed(BM_MCR_RES_EN(0) | BM_MCR_STOP_EN(0), - priv.base + HW_MCR + CLR_REG); - /* configure match count for TC0 */ - writel_relaxed(priv.ticks_per_jiffy, priv.base + HW_MR0); - /* enable TC0 */ - writel_relaxed(BM_C0_EN, priv.base + HW_TCR + SET_REG); - break; - case CLOCK_EVT_MODE_ONESHOT: - /* enable reset and stop on match */ - writel_relaxed(BM_MCR_RES_EN(0) | BM_MCR_STOP_EN(0), - priv.base + HW_MCR + SET_REG); - break; - default: - break; - } + /* disable reset and stop on match */ + writel_relaxed(BM_MCR_RES_EN(0) | BM_MCR_STOP_EN(0), + priv.base + HW_MCR + CLR_REG); + /* configure match count for TC0 */ + writel_relaxed(priv.ticks_per_jiffy, priv.base + HW_MR0); + /* enable TC0 */ + writel_relaxed(BM_C0_EN, priv.base + HW_TCR + SET_REG); + return 0; } static struct clock_event_device event_dev = { - .name = DRIVER_NAME, - .rating = 200, - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_next_event = asm9260_timer_set_next_event, - .set_mode = asm9260_timer_set_mode, + .name = DRIVER_NAME, + .rating = 200, + .features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT, + .set_next_event = asm9260_timer_set_next_event, + .set_state_shutdown = asm9260_timer_shutdown, + .set_state_periodic = asm9260_timer_set_periodic, + .set_state_oneshot = asm9260_timer_set_oneshot, + .tick_resume = asm9260_timer_shutdown, }; static irqreturn_t asm9260_timer_interrupt(int irq, void *dev_id) |