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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/clocksource/cadence_ttc_timer.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/clocksource/cadence_ttc_timer.c')
-rw-r--r--kernel/drivers/clocksource/cadence_ttc_timer.c60
1 files changed, 32 insertions, 28 deletions
diff --git a/kernel/drivers/clocksource/cadence_ttc_timer.c b/kernel/drivers/clocksource/cadence_ttc_timer.c
index 510c8a1d3..9be6018bd 100644
--- a/kernel/drivers/clocksource/cadence_ttc_timer.c
+++ b/kernel/drivers/clocksource/cadence_ttc_timer.c
@@ -16,7 +16,6 @@
*/
#include <linux/clk.h>
-#include <linux/clk-provider.h>
#include <linux/interrupt.h>
#include <linux/clockchips.h>
#include <linux/of_address.h>
@@ -191,40 +190,42 @@ static int ttc_set_next_event(unsigned long cycles,
}
/**
- * ttc_set_mode - Sets the mode of timer
+ * ttc_set_{shutdown|oneshot|periodic} - Sets the state of timer
*
- * @mode: Mode to be set
* @evt: Address of clock event instance
**/
-static void ttc_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
+static int ttc_shutdown(struct clock_event_device *evt)
{
struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt);
struct ttc_timer *timer = &ttce->ttc;
u32 ctrl_reg;
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- ttc_set_interval(timer, DIV_ROUND_CLOSEST(ttce->ttc.freq,
- PRESCALE * HZ));
- break;
- case CLOCK_EVT_MODE_ONESHOT:
- case CLOCK_EVT_MODE_UNUSED:
- case CLOCK_EVT_MODE_SHUTDOWN:
- ctrl_reg = readl_relaxed(timer->base_addr +
- TTC_CNT_CNTRL_OFFSET);
- ctrl_reg |= TTC_CNT_CNTRL_DISABLE_MASK;
- writel_relaxed(ctrl_reg,
- timer->base_addr + TTC_CNT_CNTRL_OFFSET);
- break;
- case CLOCK_EVT_MODE_RESUME:
- ctrl_reg = readl_relaxed(timer->base_addr +
- TTC_CNT_CNTRL_OFFSET);
- ctrl_reg &= ~TTC_CNT_CNTRL_DISABLE_MASK;
- writel_relaxed(ctrl_reg,
- timer->base_addr + TTC_CNT_CNTRL_OFFSET);
- break;
- }
+ ctrl_reg = readl_relaxed(timer->base_addr + TTC_CNT_CNTRL_OFFSET);
+ ctrl_reg |= TTC_CNT_CNTRL_DISABLE_MASK;
+ writel_relaxed(ctrl_reg, timer->base_addr + TTC_CNT_CNTRL_OFFSET);
+ return 0;
+}
+
+static int ttc_set_periodic(struct clock_event_device *evt)
+{
+ struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt);
+ struct ttc_timer *timer = &ttce->ttc;
+
+ ttc_set_interval(timer,
+ DIV_ROUND_CLOSEST(ttce->ttc.freq, PRESCALE * HZ));
+ return 0;
+}
+
+static int ttc_resume(struct clock_event_device *evt)
+{
+ struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt);
+ struct ttc_timer *timer = &ttce->ttc;
+ u32 ctrl_reg;
+
+ ctrl_reg = readl_relaxed(timer->base_addr + TTC_CNT_CNTRL_OFFSET);
+ ctrl_reg &= ~TTC_CNT_CNTRL_DISABLE_MASK;
+ writel_relaxed(ctrl_reg, timer->base_addr + TTC_CNT_CNTRL_OFFSET);
+ return 0;
}
static int ttc_rate_change_clocksource_cb(struct notifier_block *nb,
@@ -430,7 +431,10 @@ static void __init ttc_setup_clockevent(struct clk *clk,
ttcce->ce.name = "ttc_clockevent";
ttcce->ce.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
ttcce->ce.set_next_event = ttc_set_next_event;
- ttcce->ce.set_mode = ttc_set_mode;
+ ttcce->ce.set_state_shutdown = ttc_shutdown;
+ ttcce->ce.set_state_periodic = ttc_set_periodic;
+ ttcce->ce.set_state_oneshot = ttc_shutdown;
+ ttcce->ce.tick_resume = ttc_resume;
ttcce->ce.rating = 200;
ttcce->ce.irq = irq;
ttcce->ce.cpumask = cpu_possible_mask;