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[ARM] pxa: make GPIO IRQ code less dependent on the internal IRQs 

by:

1. introduce dedicated pxa_{mask,unmask}_low_gpio()

2. remove set_irq_chip(IRQ_GPIO_2_x, ...) which has already been
   initialized in pxa_init_irq()

3. introduce dedicated pxa_init_gpio_set_wake()

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
eric miao 2008-03-04 11:12:14 +08:00 committed by Russell King
parent 7a26d3a33f
commit a7bf4dbaba
1 changed files with 19 additions and 5 deletions
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24
arch/arm/mach-pxa/irq.c
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@ -166,11 +166,21 @@ static void pxa_ack_low_gpio(unsigned int irq)
GEDR0 = (1 << (irq - IRQ_GPIO0));
}
static void pxa_mask_low_gpio(unsigned int irq)
{
ICMR &= ~(1 << (irq - PXA_IRQ(0)));
}
static void pxa_unmask_low_gpio(unsigned int irq)
{
ICMR |= 1 << (irq - PXA_IRQ(0));
}
static struct irq_chip pxa_low_gpio_chip = {
.name = "GPIO-l",
.ack = pxa_ack_low_gpio,
.mask = pxa_mask_low_irq,
.unmask = pxa_unmask_low_irq,
.mask = pxa_mask_low_gpio,
.unmask = pxa_unmask_low_gpio,
.set_type = pxa_gpio_irq_type,
};
@ -267,20 +277,24 @@ void __init pxa_init_irq_gpio(int gpio_nr)
}
/* Install handler for GPIO>=2 edge detect interrupts */
set_irq_chip(IRQ_GPIO_2_x, &pxa_internal_chip_low);
set_irq_chained_handler(IRQ_GPIO_2_x, pxa_gpio_demux_handler);
pxa_init_gpio(gpio_nr);
}
void __init pxa_init_gpio_set_wake(int (*set_wake)(unsigned int, unsigned int))
{
pxa_low_gpio_chip.set_wake = set_wake;
pxa_muxed_gpio_chip.set_wake = set_wake;
}
void __init pxa_init_irq_set_wake(int (*set_wake)(unsigned int, unsigned int))
{
pxa_internal_chip_low.set_wake = set_wake;
#ifdef CONFIG_PXA27x
pxa_internal_chip_high.set_wake = set_wake;
#endif
pxa_low_gpio_chip.set_wake = set_wake;
pxa_muxed_gpio_chip.set_wake = set_wake;
pxa_init_gpio_set_wake(set_wake);
}
#ifdef CONFIG_PM