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authorSascha Hauer <s.hauer@pengutronix.de>2008-04-16 01:29:54 +1000
committerGrant Likely <grant.likely@secretlab.ca>2008-04-29 07:16:35 -0600
commitf800ab44f5cd094743dc3df371bcf986375f5774 (patch)
tree96aa4b5e6e2a080ba31cfacaf3f150830dbe69a7 /arch/powerpc/platforms/52xx
parentbc775eac63c16dbcfabc4c6e949c0228edf3e11f (diff)
[POWERPC] mpc5200: add interrupt type function
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>
Diffstat (limited to 'arch/powerpc/platforms/52xx')
-rw-r--r--arch/powerpc/platforms/52xx/mpc52xx_pic.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index d0dead8b9a9..8479394e9ab 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -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,
};
/*