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[POWERPC] mpc5200: add interrupt type function

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Add a set_type function for external (GPIO) interrupts.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Sascha Hauer 2008-04-16 01:29:54 +10:00 committed by Grant Likely
parent bc775eac63
commit f800ab44f5
1 changed files with 38 additions and 0 deletions
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38
arch/powerpc/platforms/52xx/mpc52xx_pic.c
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@ -18,6 +18,7 @@
#undef DEBUG
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <asm/io.h>
@ -109,11 +110,48 @@ static void mpc52xx_extirq_ack(unsigned int virq)
io_be_setbit(&intr->ctrl, 27-l2irq);
}
static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type)
{
u32 ctrl_reg, type;
int irq;
int l2irq;
irq = irq_map[virq].hwirq;
l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
pr_debug("%s: irq=%x. l2=%d flow_type=%d\n", __func__, irq, l2irq, flow_type);
switch (flow_type) {
case IRQF_TRIGGER_HIGH:
type = 0;
break;
case IRQF_TRIGGER_RISING:
type = 1;
break;
case IRQF_TRIGGER_FALLING:
type = 2;
break;
case IRQF_TRIGGER_LOW:
type = 3;
break;
default:
type = 0;
}
ctrl_reg = in_be32(&intr->ctrl);
ctrl_reg &= ~(0x3 << (22 - (l2irq * 2)));
ctrl_reg |= (type << (22 - (l2irq * 2)));
out_be32(&intr->ctrl, ctrl_reg);
return 0;
}
static struct irq_chip mpc52xx_extirq_irqchip = {
.typename = " MPC52xx IRQ[0-3] ",
.mask = mpc52xx_extirq_mask,
.unmask = mpc52xx_extirq_unmask,
.ack = mpc52xx_extirq_ack,
.set_type = mpc52xx_extirq_set_type,
};
/*