1 files changed, 40 insertions, 29 deletions

diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 63621f152c9..afeeca52fc6 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -71,12 +71,16 @@ enum timer_location {
 struct msm_clock {
         struct clock_event_device   clockevent;
         struct clocksource          clocksource;
-        struct irqaction            irq;
+        unsigned int                irq;
         void __iomem                *regbase;
         uint32_t                    freq;
         uint32_t                    shift;
         void __iomem                *global_counter;
         void __iomem                *local_counter;
+        union {
+                struct clock_event_device               *evt;
+                struct clock_event_device __percpu      **percpu_evt;
+        };              
 };
 
 enum {
@@ -87,13 +91,10 @@ enum {
 
 
 static struct msm_clock msm_clocks[];
-static struct clock_event_device *local_clock_event;
 
 static irqreturn_t msm_timer_interrupt(int irq, void *dev_id)
 {
-        struct clock_event_device *evt = dev_id;
-        if (smp_processor_id() != 0)
-                evt = local_clock_event;
+        struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
         if (evt->event_handler == NULL)
                 return IRQ_HANDLED;
         evt->event_handler(evt);
@@ -171,13 +172,7 @@ static struct msm_clock msm_clocks[] = {
                         .mask           = CLOCKSOURCE_MASK(32),
                         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
                 },
-                .irq = {
-                        .name    = "gp_timer",
-                        .flags   = IRQF_DISABLED | IRQF_TIMER | IRQF_TRIGGER_RISING,
-                        .handler = msm_timer_interrupt,
-                        .dev_id  = &msm_clocks[0].clockevent,
-                        .irq     = INT_GP_TIMER_EXP
-                },
+                .irq = INT_GP_TIMER_EXP,
                 .freq = GPT_HZ,
         },
         [MSM_CLOCK_DGT] = {
@@ -196,13 +191,7 @@ static struct msm_clock msm_clocks[] = {
                         .mask           = CLOCKSOURCE_MASK((32 - MSM_DGT_SHIFT)),
                         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
                 },
-                .irq = {
-                        .name    = "dg_timer",
-                        .flags   = IRQF_DISABLED | IRQF_TIMER | IRQF_TRIGGER_RISING,
-                        .handler = msm_timer_interrupt,
-                        .dev_id  = &msm_clocks[1].clockevent,
-                        .irq     = INT_DEBUG_TIMER_EXP
-                },
+                .irq = INT_DEBUG_TIMER_EXP,
                 .freq = DGT_HZ >> MSM_DGT_SHIFT,
                 .shift = MSM_DGT_SHIFT,
         }
@@ -261,10 +250,30 @@ static void __init msm_timer_init(void)
                         printk(KERN_ERR "msm_timer_init: clocksource_register "
                                "failed for %s\n", cs->name);
 
-                res = setup_irq(clock->irq.irq, &clock->irq);
+                ce->irq = clock->irq;
+                if (cpu_is_msm8x60() || cpu_is_msm8960()) {
+                        clock->percpu_evt = alloc_percpu(struct clock_event_device *);
+                        if (!clock->percpu_evt) {
+                                pr_err("msm_timer_init: memory allocation "
+                                       "failed for %s\n", ce->name);
+                                continue;
+                        }
+
+                        *__this_cpu_ptr(clock->percpu_evt) = ce;
+                        res = request_percpu_irq(ce->irq, msm_timer_interrupt,
+                                                 ce->name, clock->percpu_evt);
+                        if (!res)
+                                enable_percpu_irq(ce->irq, 0);
+                } else {
+                        clock->evt = ce;
+                        res = request_irq(ce->irq, msm_timer_interrupt,
+                                          IRQF_TIMER | IRQF_NOBALANCING | IRQF_TRIGGER_RISING,
+                                          ce->name, &clock->evt);
+                }
+
                 if (res)
-                        printk(KERN_ERR "msm_timer_init: setup_irq "
-                               "failed for %s\n", cs->name);
+                        pr_err("msm_timer_init: request_irq failed for %s\n",
+                               ce->name);
 
                 clockevents_register_device(ce);
         }
@@ -273,6 +282,7 @@ static void __init msm_timer_init(void)
 #ifdef CONFIG_SMP
 int __cpuinit local_timer_setup(struct clock_event_device *evt)
 {
+        static bool local_timer_inited;
         struct msm_clock *clock = &msm_clocks[MSM_GLOBAL_TIMER];
 
         /* Use existing clock_event for cpu 0 */
@@ -281,12 +291,13 @@ int __cpuinit local_timer_setup(struct clock_event_device *evt)
 
         writel(DGT_CLK_CTL_DIV_4, MSM_TMR_BASE + DGT_CLK_CTL);
 
-        if (!local_clock_event) {
+        if (!local_timer_inited) {
                 writel(0, clock->regbase  + TIMER_ENABLE);
                 writel(0, clock->regbase + TIMER_CLEAR);
                 writel(~0, clock->regbase + TIMER_MATCH_VAL);
+                local_timer_inited = true;
         }
-        evt->irq = clock->irq.irq;
+        evt->irq = clock->irq;
         evt->name = "local_timer";
         evt->features = CLOCK_EVT_FEAT_ONESHOT;
         evt->rating = clock->clockevent.rating;
@@ -298,17 +309,17 @@ int __cpuinit local_timer_setup(struct clock_event_device *evt)
                 clockevent_delta2ns(0xf0000000 >> clock->shift, evt);
         evt->min_delta_ns = clockevent_delta2ns(4, evt);
 
-        local_clock_event = evt;
-
-        gic_enable_ppi(clock->irq.irq);
+        *__this_cpu_ptr(clock->percpu_evt) = evt;
+        enable_percpu_irq(evt->irq, 0);
 
         clockevents_register_device(evt);
         return 0;
 }
 
-inline int local_timer_ack(void)
+void local_timer_stop(struct clock_event_device *evt)
 {
-        return 1;
+        evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
+        disable_percpu_irq(evt->irq);
 }
 
 #endif