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>
diff --git a/arch/arm/plat-samsung/irq-vic-timer.c b/arch/arm/plat-samsung/irq-vic-timer.c
index d6ad66a..a607546 100644
--- a/arch/arm/plat-samsung/irq-vic-timer.c
+++ b/arch/arm/plat-samsung/irq-vic-timer.c
@@ -28,60 +28,43 @@
}
/* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
-
-static void s3c_irq_timer_mask(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_unmask(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_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);
+ }
}