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authorViresh Kumar <viresh.kumar@linaro.org>2015-02-27 13:39:52 +0530
committerViresh Kumar <viresh.kumar@linaro.org>2015-07-17 08:29:44 +0530
commit10dca88a4be632678088f5cbc20b54c2113ecb91 (patch)
tree86ba641597609cb20d2b6d4caf09c23f95b718b5 /arch/arm/plat-orion
parent8d778377e598bd78d4ce788b20b1c74777c5d137 (diff)
downloadlinux-10dca88a4be632678088f5cbc20b54c2113ecb91.tar.bz2
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@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Gregory Clement <gregory.clement@free-electrons.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'arch/arm/plat-orion')
-rw-r--r--arch/arm/plat-orion/time.c93
1 files 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)