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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:06:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:06:17 -0700
commit48d554418d3bfbba5e9dc1ebdf352f1b1f3ff4ee (patch)
tree696bdc0c1087e82c6493c852bca514bb0fcd7881 /arch/arm/mach-msm
parentd61b7a572b292e2be409e13b4b3adf475f18fb29 (diff)
parent2cbe23e3a432e3d09a849adb197c8fcc09e7391d (diff)
downloadop-kernel-dev-48d554418d3bfbba5e9dc1ebdf352f1b1f3ff4ee.zip
op-kernel-dev-48d554418d3bfbba5e9dc1ebdf352f1b1f3ff4ee.tar.gz
Merge tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: timer cleanup work" from Arnd Bergmann: "These are split out from the generic soc and driver updates because there was a lot of conflicting work by multiple people. Marc Zyngier worked on simplifying the "localtimer" interfaces, and some of the platforms are touching the same code as they move to device tree based booting. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" * tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits) ARM: tegra: select USB_ULPI if USB is selected arm/tegra: pcie: fix return value of function ARM: ux500: fix compilation after local timer rework ARM: shmobile: remove additional __io() macro use ARM: local timers: make the runtime registration interface mandatory ARM: local timers: convert MSM to runtime registration interface ARM: local timers: convert exynos to runtime registration interface ARM: smp_twd: remove old local timer interface ARM: imx6q: convert to twd_local_timer_register() interface ARM: highbank: convert to twd_local_timer_register() interface ARM: ux500: convert to twd_local_timer_register() interface ARM: shmobile: convert to twd_local_timer_register() interface ARM: tegra: convert to twd_local_timer_register() interface ARM: plat-versatile: convert to twd_local_timer_register() interface ARM: OMAP4: convert to twd_local_timer_register() interface ARM: smp_twd: add device tree support ARM: smp_twd: add runtime registration support ARM: local timers: introduce a new registration interface ARM: smp_twd: make local_timer_stop a symbol instead of a #define ARM: mach-shmobile: default to no earlytimer ...
Diffstat (limited to 'arch/arm/mach-msm')
-rw-r--r--arch/arm/mach-msm/timer.c79
1 files changed, 44 insertions, 35 deletions
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 11d0d8f..75f4be4 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -127,6 +127,45 @@ static struct clocksource msm_clocksource = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
+#ifdef CONFIG_LOCAL_TIMERS
+static int __cpuinit msm_local_timer_setup(struct clock_event_device *evt)
+{
+ /* Use existing clock_event for cpu 0 */
+ if (!smp_processor_id())
+ return 0;
+
+ writel_relaxed(0, event_base + TIMER_ENABLE);
+ writel_relaxed(0, event_base + TIMER_CLEAR);
+ writel_relaxed(~0, event_base + TIMER_MATCH_VAL);
+ evt->irq = msm_clockevent.irq;
+ evt->name = "local_timer";
+ evt->features = msm_clockevent.features;
+ evt->rating = msm_clockevent.rating;
+ evt->set_mode = msm_timer_set_mode;
+ evt->set_next_event = msm_timer_set_next_event;
+ evt->shift = msm_clockevent.shift;
+ evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift);
+ evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt);
+ evt->min_delta_ns = clockevent_delta2ns(4, evt);
+
+ *__this_cpu_ptr(msm_evt.percpu_evt) = evt;
+ clockevents_register_device(evt);
+ enable_percpu_irq(evt->irq, 0);
+ return 0;
+}
+
+static void msm_local_timer_stop(struct clock_event_device *evt)
+{
+ evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
+ disable_percpu_irq(evt->irq);
+}
+
+static struct local_timer_ops msm_local_timer_ops __cpuinitdata = {
+ .setup = msm_local_timer_setup,
+ .stop = msm_local_timer_stop,
+};
+#endif /* CONFIG_LOCAL_TIMERS */
+
static void __init msm_timer_init(void)
{
struct clock_event_device *ce = &msm_clockevent;
@@ -173,8 +212,12 @@ static void __init msm_timer_init(void)
*__this_cpu_ptr(msm_evt.percpu_evt) = ce;
res = request_percpu_irq(ce->irq, msm_timer_interrupt,
ce->name, msm_evt.percpu_evt);
- if (!res)
+ if (!res) {
enable_percpu_irq(ce->irq, 0);
+#ifdef CONFIG_LOCAL_TIMERS
+ local_timer_register(&msm_local_timer_ops);
+#endif
+ }
} else {
msm_evt.evt = ce;
res = request_irq(ce->irq, msm_timer_interrupt,
@@ -191,40 +234,6 @@ err:
pr_err("clocksource_register failed\n");
}
-#ifdef CONFIG_LOCAL_TIMERS
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
- /* Use existing clock_event for cpu 0 */
- if (!smp_processor_id())
- return 0;
-
- writel_relaxed(0, event_base + TIMER_ENABLE);
- writel_relaxed(0, event_base + TIMER_CLEAR);
- writel_relaxed(~0, event_base + TIMER_MATCH_VAL);
- evt->irq = msm_clockevent.irq;
- evt->name = "local_timer";
- evt->features = msm_clockevent.features;
- evt->rating = msm_clockevent.rating;
- evt->set_mode = msm_timer_set_mode;
- evt->set_next_event = msm_timer_set_next_event;
- evt->shift = msm_clockevent.shift;
- evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift);
- evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt);
- evt->min_delta_ns = clockevent_delta2ns(4, evt);
-
- *__this_cpu_ptr(msm_evt.percpu_evt) = evt;
- clockevents_register_device(evt);
- enable_percpu_irq(evt->irq, 0);
- return 0;
-}
-
-void local_timer_stop(struct clock_event_device *evt)
-{
- evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
- disable_percpu_irq(evt->irq);
-}
-#endif /* CONFIG_LOCAL_TIMERS */
-
struct sys_timer msm_timer = {
.init = msm_timer_init
};
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