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Message-Id: <57ae9434bbb7218961c3ad45a26fbe1fffe40cbd.1434622147.git.viresh.kumar@linaro.org>
Date: Thu, 18 Jun 2015 16:24:15 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Thomas Gleixner <tglx@...utronix.de>,
Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: linaro-kernel@...ts.linaro.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Viresh Kumar <viresh.kumar@...aro.org>,
Oleksij Rempel <linux@...pel-privat.de>
Subject: [PATCH 01/41] 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.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Cc: Oleksij Rempel <linux@...pel-privat.de>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
drivers/clocksource/asm9260_timer.c | 61 ++++++++++++++++++++++---------------
1 file changed, 36 insertions(+), 25 deletions(-)
diff --git a/drivers/clocksource/asm9260_timer.c b/drivers/clocksource/asm9260_timer.c
index 4c2ba59897e8..67ff6f2abf19 100644
--- a/drivers/clocksource/asm9260_timer.c
+++ b/drivers/clocksource/asm9260_timer.c
@@ -120,38 +120,49 @@ 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 int asm9260_timer_shutdown(struct clock_event_device *evt)
{
/* stop timer0 */
writel_relaxed(BM_C0_EN, priv.base + HW_TCR + CLR_REG);
+ return 0;
+}
+
+static int asm9260_timer_set_oneshot(struct clock_event_device *evt)
+{
+ /* stop timer0 */
+ writel_relaxed(BM_C0_EN, priv.base + HW_TCR + CLR_REG);
+
+ /* 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;
+}
- 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;
- }
+static int asm9260_timer_set_periodic(struct clock_event_device *evt)
+{
+ /* stop timer0 */
+ writel_relaxed(BM_C0_EN, priv.base + HW_TCR + CLR_REG);
+
+ /* 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)
--
2.4.0
--
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