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ARM: S3C64XX: Use chip_data to store the shift for EINTs 

This makes all the functions that use the shift slightly smaller, one
instruction in most cases but more for ack() and maskack().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Mark Brown 2010-12-02 14:35:38 +09:00 committed by Kukjin Kim
parent c35cd6ec36
commit 3c9169753b
1 changed files with 5 additions and 4 deletions
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9
arch/arm/mach-s3c64xx/irq-eint.c
View File

@ -30,14 +30,14 @@
#include <plat/pm.h>
#define eint_offset(irq) ((irq) - IRQ_EINT(0))
#define eint_irq_to_bit(irq) (1 << eint_offset(irq))
#define eint_irq_to_bit(irq) ((u32)(1 << eint_offset(irq)))
static inline void s3c_irq_eint_mask(struct irq_data *data)
{
u32 mask;
mask = __raw_readl(S3C64XX_EINT0MASK);
mask |= eint_irq_to_bit(data->irq);
mask |= (u32)data->chip_data;
__raw_writel(mask, S3C64XX_EINT0MASK);
}
@ -46,13 +46,13 @@ static void s3c_irq_eint_unmask(struct irq_data *data)
u32 mask;
mask = __raw_readl(S3C64XX_EINT0MASK);
mask &= ~eint_irq_to_bit(data->irq);
mask &= ~((u32)data->chip_data);
__raw_writel(mask, S3C64XX_EINT0MASK);
}
static inline void s3c_irq_eint_ack(struct irq_data *data)
{
__raw_writel(eint_irq_to_bit(data->irq), S3C64XX_EINT0PEND);
__raw_writel((u32)data->chip_data, S3C64XX_EINT0PEND);
}
static void s3c_irq_eint_maskack(struct irq_data *data)
@ -198,6 +198,7 @@ static int __init s3c64xx_init_irq_eint(void)
for (irq = IRQ_EINT(0); irq <= IRQ_EINT(27); irq++) {
set_irq_chip(irq, &s3c_irq_eint);
set_irq_chip_data(irq, (void *)eint_irq_to_bit(irq));
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}