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>
diff --git a/arch/m68k/platform/coldfire/gpio.c b/arch/m68k/platform/coldfire/gpio.c
index 9cd2b5c..ab9ac41 100644
--- a/arch/m68k/platform/coldfire/gpio.c
+++ b/arch/m68k/platform/coldfire/gpio.c
@@ -147,6 +147,18 @@
__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 @@
.direction_output = mcfgpio_direction_output,
.get = mcfgpio_get_value,
.set = mcfgpio_set_value,
+ .to_irq = mcfgpio_to_irq,
.base = 0,
.ngpio = MCFGPIO_PIN_MAX,
};