On 30-06-15, 10:25, Daniel Lezcano wrote:
Could you add in the changelog the subtle change with set_mode(RESUME) and this code. As a default the timer was stopped when entering in the set_mode function, now with the new API, this is done explicitly.
Can you replace this line with a call to asm9260_timer_shutdown ?
How does this look ?
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Message-Id: 12839571df542ecc8b9304b7de9881216d45aef8.1435654791.git.viresh.kumar@linaro.org From: Viresh Kumar viresh.kumar@linaro.org Date: Fri, 27 Feb 2015 13:39:52 +0530 Subject: [PATCH] clocksource: 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 --- drivers/clocksource/asm9260_timer.c | 64 ++++++++++++++++++++++--------------- 1 file 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)