diff options
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/time.c | 64 |
1 files changed, 33 insertions, 31 deletions
diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c index b16a4e0..127602e 100644 --- a/arch/arm/mach-imx/time.c +++ b/arch/arm/mach-imx/time.c @@ -83,9 +83,6 @@ #define timer_is_v1() (cpu_is_mx1() || cpu_is_mx21() || cpu_is_mx27()) #define timer_is_v2() (!timer_is_v1()) -static struct clock_event_device clockevent_mxc; -static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED; - struct imx_timer { enum imx_gpt_type type; void __iomem *base; @@ -93,6 +90,9 @@ struct imx_timer { struct clk *clk_per; struct clk *clk_ipg; const struct imx_gpt_data *gpt; + struct clock_event_device ced; + enum clock_event_mode cem; + struct irqaction act; }; struct imx_gpt_data { @@ -103,6 +103,11 @@ struct imx_gpt_data { static void __iomem *timer_base; +static inline struct imx_timer *to_imx_timer(struct clock_event_device *ced) +{ + return container_of(ced, struct imx_timer, ced); +} + static inline void gpt_irq_disable(void) { unsigned int tmp; @@ -207,8 +212,9 @@ static const char *clock_event_mode_label[] = { #endif /* DEBUG */ static void mxc_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) + struct clock_event_device *ced) { + struct imx_timer *imxtm = to_imx_timer(ced); unsigned long flags; /* @@ -220,7 +226,7 @@ static void mxc_set_mode(enum clock_event_mode mode, /* Disable interrupt in GPT module */ gpt_irq_disable(); - if (mode != clockevent_mode) { + if (mode != imxtm->cem) { /* Set event time into far-far future */ if (timer_is_v2()) writel_relaxed(readl_relaxed(timer_base + V2_TCN) - 3, @@ -235,12 +241,12 @@ static void mxc_set_mode(enum clock_event_mode mode, #ifdef DEBUG printk(KERN_INFO "mxc_set_mode: changing mode from %s to %s\n", - clock_event_mode_label[clockevent_mode], + clock_event_mode_label[imxtm->cem], clock_event_mode_label[mode]); #endif /* DEBUG */ /* Remember timer mode */ - clockevent_mode = mode; + imxtm->cem = mode; local_irq_restore(flags); switch (mode) { @@ -272,7 +278,7 @@ static void mxc_set_mode(enum clock_event_mode mode, */ static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id) { - struct clock_event_device *evt = &clockevent_mxc; + struct clock_event_device *ced = dev_id; uint32_t tstat; if (timer_is_v2()) @@ -282,34 +288,33 @@ static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id) gpt_irq_acknowledge(); - evt->event_handler(evt); + ced->event_handler(ced); return IRQ_HANDLED; } -static struct irqaction mxc_timer_irq = { - .name = "i.MX Timer Tick", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = mxc_timer_interrupt, -}; - -static struct clock_event_device clockevent_mxc = { - .name = "mxc_timer1", - .features = CLOCK_EVT_FEAT_ONESHOT, - .set_mode = mxc_set_mode, - .set_next_event = mx1_2_set_next_event, - .rating = 200, -}; - static int __init mxc_clockevent_init(struct imx_timer *imxtm) { - clockevent_mxc.set_next_event = imxtm->gpt->set_next_event; - clockevent_mxc.cpumask = cpumask_of(0); - clockevents_config_and_register(&clockevent_mxc, - clk_get_rate(imxtm->clk_per), + struct clock_event_device *ced = &imxtm->ced; + struct irqaction *act = &imxtm->act; + + imxtm->cem = CLOCK_EVT_MODE_UNUSED; + + ced->name = "mxc_timer1"; + ced->features = CLOCK_EVT_FEAT_ONESHOT; + ced->set_mode = mxc_set_mode; + ced->set_next_event = imxtm->gpt->set_next_event; + ced->rating = 200; + ced->cpumask = cpumask_of(0); + clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per), 0xff, 0xfffffffe); - return 0; + act->name = "i.MX Timer Tick"; + act->flags = IRQF_TIMER | IRQF_IRQPOLL; + act->handler = mxc_timer_interrupt; + act->dev_id = ced; + + return setup_irq(imxtm->irq, act); } static void imx1_gpt_setup_tctl(struct imx_timer *imxtm) @@ -415,9 +420,6 @@ static void __init _mxc_timer_init(struct imx_timer *imxtm) /* init and register the timer to the framework */ mxc_clocksource_init(imxtm); mxc_clockevent_init(imxtm); - - /* Make irqs happen */ - setup_irq(imxtm->irq, &mxc_timer_irq); } void __init mxc_timer_init(unsigned long pbase, int irq, enum imx_gpt_type type) |