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Message-Id: <7cfa3c69ca97acfd7cac19652d82aa610015bab8.1437101996.git.viresh.kumar@linaro.org>
Date: Fri, 17 Jul 2015 10:41:02 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: arm@...nel.org, olof@...om.net
Cc: linaro-kernel@...ts.linaro.org, arnd.bergmann@...aro.org,
linux-arm-kernel@...ts.infradead.org,
Viresh Kumar <viresh.kumar@...aro.org>,
Greg Ungerer <gerg@...inux.org>,
linux-kernel@...r.kernel.org (open list),
Russell King <linux@....linux.org.uk>
Subject: [PATCH 08/18] ARM/ks8695/time: Migrate to new 'set-state' interface
Migrate ks8695 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.
There is nothing to be done for oneshot or shutdown states and so are
not implemented.
Acked-by: Greg Ungerer <gerg@...inux.org>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
arch/arm/mach-ks8695/time.c | 43 +++++++++++++++++++++----------------------
1 file changed, 21 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-ks8695/time.c b/arch/arm/mach-ks8695/time.c
index a197874bf382..18eb0fbd8d82 100644
--- a/arch/arm/mach-ks8695/time.c
+++ b/arch/arm/mach-ks8695/time.c
@@ -54,28 +54,25 @@
/* Timer0 Timeout Counter Register */
#define T0TC_WATCHDOG (0xff) /* Enable watchdog mode */
-static void ks8695_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
+static int ks8695_set_periodic(struct clock_event_device *evt)
{
+ u32 rate = DIV_ROUND_CLOSEST(KS8695_CLOCK_RATE, HZ);
+ u32 half = DIV_ROUND_CLOSEST(rate, 2);
u32 tmcon;
- if (mode == CLOCK_EVT_FEAT_PERIODIC) {
- u32 rate = DIV_ROUND_CLOSEST(KS8695_CLOCK_RATE, HZ);
- u32 half = DIV_ROUND_CLOSEST(rate, 2);
-
- /* Disable timer 1 */
- tmcon = readl_relaxed(KS8695_TMR_VA + KS8695_TMCON);
- tmcon &= ~TMCON_T1EN;
- writel_relaxed(tmcon, KS8695_TMR_VA + KS8695_TMCON);
+ /* Disable timer 1 */
+ tmcon = readl_relaxed(KS8695_TMR_VA + KS8695_TMCON);
+ tmcon &= ~TMCON_T1EN;
+ writel_relaxed(tmcon, KS8695_TMR_VA + KS8695_TMCON);
- /* Both registers need to count down */
- writel_relaxed(half, KS8695_TMR_VA + KS8695_T1TC);
- writel_relaxed(half, KS8695_TMR_VA + KS8695_T1PD);
+ /* Both registers need to count down */
+ writel_relaxed(half, KS8695_TMR_VA + KS8695_T1TC);
+ writel_relaxed(half, KS8695_TMR_VA + KS8695_T1PD);
- /* Re-enable timer1 */
- tmcon |= TMCON_T1EN;
- writel_relaxed(tmcon, KS8695_TMR_VA + KS8695_TMCON);
- }
+ /* Re-enable timer1 */
+ tmcon |= TMCON_T1EN;
+ writel_relaxed(tmcon, KS8695_TMR_VA + KS8695_TMCON);
+ return 0;
}
static int ks8695_set_next_event(unsigned long cycles,
@@ -102,11 +99,13 @@ static int ks8695_set_next_event(unsigned long cycles,
}
static struct clock_event_device clockevent_ks8695 = {
- .name = "ks8695_t1tc",
- .rating = 300, /* Reasonably fast and accurate clock event */
- .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
- .set_next_event = ks8695_set_next_event,
- .set_mode = ks8695_set_mode,
+ .name = "ks8695_t1tc",
+ /* Reasonably fast and accurate clock event */
+ .rating = 300,
+ .features = CLOCK_EVT_FEAT_ONESHOT |
+ CLOCK_EVT_FEAT_PERIODIC,
+ .set_next_event = ks8695_set_next_event,
+ .set_state_periodic = ks8695_set_periodic,
};
/*
--
2.4.0
--
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