diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2011-05-09 10:09:26 +0200 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-05-09 10:12:39 +0200 |
commit | 2d2e1d3c404d7e5bd20d6e1ad910e440eaf6c14d (patch) | |
tree | 64ff2d15ad66b07f3a5578973f15f5a0b693a3a6 /arch/arm/plat-samsung/irq-vic-timer.c | |
parent | ad739dcff27435dfb3674c7549ec1b4955b050ec (diff) |
ARM: SAMSUNG: Convert irq-vic-timer to generic irq chip
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'arch/arm/plat-samsung/irq-vic-timer.c')
-rw-r--r-- | arch/arm/plat-samsung/irq-vic-timer.c | 69 |
1 files changed, 26 insertions, 43 deletions
diff --git a/arch/arm/plat-samsung/irq-vic-timer.c b/arch/arm/plat-samsung/irq-vic-timer.c index d6ad66ab929..a607546ddbd 100644 --- a/arch/arm/plat-samsung/irq-vic-timer.c +++ b/arch/arm/plat-samsung/irq-vic-timer.c @@ -28,60 +28,43 @@ static void s3c_irq_demux_vic_timer(unsigned int irq, struct irq_desc *desc) } /* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */ - -static void s3c_irq_timer_mask(struct irq_data *data) -{ - u32 reg = __raw_readl(S3C64XX_TINT_CSTAT); - u32 mask = (u32)data->chip_data; - - reg &= 0x1f; /* mask out pending interrupts */ - reg &= ~mask; - __raw_writel(reg, S3C64XX_TINT_CSTAT); -} - -static void s3c_irq_timer_unmask(struct irq_data *data) +static void s3c_irq_timer_ack(struct irq_data *d) { - u32 reg = __raw_readl(S3C64XX_TINT_CSTAT); - u32 mask = (u32)data->chip_data; + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + u32 mask = (1 << 5) << (d->irq - gc->irq_base); - reg &= 0x1f; /* mask out pending interrupts */ - reg |= mask; - __raw_writel(reg, S3C64XX_TINT_CSTAT); + irq_reg_writel(mask | gc->mask_cache, gc->reg_base); } -static void s3c_irq_timer_ack(struct irq_data *data) -{ - u32 reg = __raw_readl(S3C64XX_TINT_CSTAT); - u32 mask = (u32)data->chip_data; - - reg &= 0x1f; - reg |= mask << 5; - __raw_writel(reg, S3C64XX_TINT_CSTAT); -} - -static struct irq_chip s3c_irq_timer = { - .name = "s3c-timer", - .irq_mask = s3c_irq_timer_mask, - .irq_unmask = s3c_irq_timer_unmask, - .irq_ack = s3c_irq_timer_ack, -}; - /** * s3c_init_vic_timer_irq() - initialise timer irq chanined off VIC.\ - * @parent_irq: The parent IRQ on the VIC for the timer. - * @timer_irq: The IRQ to be used for the timer. + * @num: Number of timers to initialize + * @timer_irq: Base IRQ number to be used for the timers. * * Register the necessary IRQ chaining and support for the timer IRQs * chained of the VIC. */ -void __init s3c_init_vic_timer_irq(unsigned int parent_irq, - unsigned int timer_irq) +void __init s3c_init_vic_timer_irq(unsigned int num, unsigned int timer_irq) { + unsigned int pirq[5] = { IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC, + IRQ_TIMER3_VIC, IRQ_TIMER4_VIC }; + struct irq_chip_generic *s3c_tgc; + struct irq_chip_type *ct; + unsigned int i; - irq_set_chained_handler(parent_irq, s3c_irq_demux_vic_timer); - irq_set_handler_data(parent_irq, (void *)timer_irq); + s3c_tgc = irq_alloc_generic_chip("s3c-timer", 1, timer_irq, + S3C64XX_TINT_CSTAT, handle_level_irq); + ct = s3c_tgc->chip_types; + ct->chip.irq_mask = irq_gc_mask_clr_bit; + ct->chip.irq_unmask = irq_gc_mask_set_bit; + ct->chip.irq_ack = s3c_irq_timer_ack; + irq_setup_generic_chip(s3c_tgc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE, + IRQ_NOREQUEST | IRQ_NOPROBE, 0); + /* Clear the upper bits of the mask_cache*/ + s3c_tgc->mask_cache &= 0x1f; - irq_set_chip_and_handler(timer_irq, &s3c_irq_timer, handle_level_irq); - irq_set_chip_data(timer_irq, (void *)(1 << (timer_irq - IRQ_TIMER0))); - set_irq_flags(timer_irq, IRQF_VALID); + for (i = 0; i < num; i++, timer_irq++) { + irq_set_chained_handler(pirq[i], s3c_irq_demux_vic_timer); + irq_set_handler_data(pirq[i], (void *)timer_irq); + } } |