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m68knommu: add to_irq function so we can map gpios to external interrupts. 

Singed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Steven King 2014-05-21 16:00:30 -07:00 committed by Greg Ungerer
parent 151d14f4ac
commit 60fc65fdd1
1 changed files with 13 additions and 0 deletions
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13
arch/m68k/platform/coldfire/gpio.c
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@ -147,6 +147,18 @@ void mcfgpio_free(struct gpio_chip *chip, unsigned offset)
__mcfgpio_free(offset);
}
int mcfgpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
#if defined(MCFGPIO_IRQ_MIN)
if ((offset >= MCFGPIO_IRQ_MIN) && (offset < MCFGPIO_IRQ_MAX))
#else
if (offset < MCFGPIO_IRQ_MAX)
#endif
return MCFGPIO_IRQ_VECBASE + offset;
else
return -EINVAL;
}
struct bus_type mcfgpio_subsys = {
.name = "gpio",
.dev_name = "gpio",
@ -160,6 +172,7 @@ static struct gpio_chip mcfgpio_chip = {
.direction_output = mcfgpio_direction_output,
.get = mcfgpio_get_value,
.set = mcfgpio_set_value,
.to_irq = mcfgpio_to_irq,
.base = 0,
.ngpio = MCFGPIO_PIN_MAX,
};