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Date: Fri, 17 Jul 2015 10:41:12 +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>,
Jason Cooper <jason@...edaemon.net>,
Andrew Lunn <andrew@...n.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Gregory Clement <gregory.clement@...e-electrons.com>,
linux-kernel@...r.kernel.org (open list),
Russell King <linux@....linux.org.uk>
Subject: [PATCH 18/18] ARM/orion/time: Migrate to new 'set-state' interface
Migrate orion 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: Jason Cooper <jason@...edaemon.net>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Gregory Clement <gregory.clement@...e-electrons.com>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
arch/arm/plat-orion/time.c | 93 ++++++++++++++++++++++++----------------------
1 file changed, 48 insertions(+), 45 deletions(-)
diff --git a/arch/arm/plat-orion/time.c b/arch/arm/plat-orion/time.c
index 261258f717fc..8085a8aac812 100644
--- a/arch/arm/plat-orion/time.c
+++ b/arch/arm/plat-orion/time.c
@@ -106,60 +106,63 @@ orion_clkevt_next_event(unsigned long delta, struct clock_event_device *dev)
return 0;
}
-static void
-orion_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
+static int orion_clkevt_shutdown(struct clock_event_device *evt)
{
unsigned long flags;
u32 u;
local_irq_save(flags);
- if (mode == CLOCK_EVT_MODE_PERIODIC) {
- /*
- * Setup timer to fire at 1/HZ intervals.
- */
- writel(ticks_per_jiffy - 1, timer_base + TIMER1_RELOAD_OFF);
- writel(ticks_per_jiffy - 1, timer_base + TIMER1_VAL_OFF);
-
- /*
- * Enable timer interrupt.
- */
- u = readl(bridge_base + BRIDGE_MASK_OFF);
- writel(u | BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
-
- /*
- * Enable timer.
- */
- u = readl(timer_base + TIMER_CTRL_OFF);
- writel(u | TIMER1_EN | TIMER1_RELOAD_EN,
- timer_base + TIMER_CTRL_OFF);
- } else {
- /*
- * Disable timer.
- */
- u = readl(timer_base + TIMER_CTRL_OFF);
- writel(u & ~TIMER1_EN, timer_base + TIMER_CTRL_OFF);
-
- /*
- * Disable timer interrupt.
- */
- u = readl(bridge_base + BRIDGE_MASK_OFF);
- writel(u & ~BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
-
- /*
- * ACK pending timer interrupt.
- */
- writel(bridge_timer1_clr_mask, bridge_base + BRIDGE_CAUSE_OFF);
-
- }
+
+ /* Disable timer */
+ u = readl(timer_base + TIMER_CTRL_OFF);
+ writel(u & ~TIMER1_EN, timer_base + TIMER_CTRL_OFF);
+
+ /* Disable timer interrupt */
+ u = readl(bridge_base + BRIDGE_MASK_OFF);
+ writel(u & ~BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
+
+ /* ACK pending timer interrupt */
+ writel(bridge_timer1_clr_mask, bridge_base + BRIDGE_CAUSE_OFF);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static int orion_clkevt_set_periodic(struct clock_event_device *evt)
+{
+ unsigned long flags;
+ u32 u;
+
+ local_irq_save(flags);
+
+ /* Setup timer to fire at 1/HZ intervals */
+ writel(ticks_per_jiffy - 1, timer_base + TIMER1_RELOAD_OFF);
+ writel(ticks_per_jiffy - 1, timer_base + TIMER1_VAL_OFF);
+
+ /* Enable timer interrupt */
+ u = readl(bridge_base + BRIDGE_MASK_OFF);
+ writel(u | BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
+
+ /* Enable timer */
+ u = readl(timer_base + TIMER_CTRL_OFF);
+ writel(u | TIMER1_EN | TIMER1_RELOAD_EN, timer_base + TIMER_CTRL_OFF);
+
local_irq_restore(flags);
+
+ return 0;
}
static struct clock_event_device orion_clkevt = {
- .name = "orion_tick",
- .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
- .rating = 300,
- .set_next_event = orion_clkevt_next_event,
- .set_mode = orion_clkevt_mode,
+ .name = "orion_tick",
+ .features = CLOCK_EVT_FEAT_ONESHOT |
+ CLOCK_EVT_FEAT_PERIODIC,
+ .rating = 300,
+ .set_next_event = orion_clkevt_next_event,
+ .set_state_shutdown = orion_clkevt_shutdown,
+ .set_state_periodic = orion_clkevt_set_periodic,
+ .set_state_oneshot = orion_clkevt_shutdown,
+ .tick_resume = orion_clkevt_shutdown,
};
static irqreturn_t orion_timer_interrupt(int irq, void *dev_id)
--
2.4.0
--
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