diff options
| author |   Sascha Hauer <s.hauer@pengutronix.de> | 2008-04-16 01:29:54 +1000 |
|---|---|---|
| committer |   Grant Likely <grant.likely@secretlab.ca> | 2008-04-29 07:16:35 -0600 |
| commit | f800ab44f5cd094743dc3df371bcf986375f5774 (patch) | |
| tree | 96aa4b5e6e2a080ba31cfacaf3f150830dbe69a7 /arch | |
| parent | [POWERPC] mpc5200: Fix unterminated of_device_id table (diff) | |
| download | linux-dev-f800ab44f5cd094743dc3df371bcf986375f5774.tar.xz linux-dev-f800ab44f5cd094743dc3df371bcf986375f5774.zip | |
[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')
| -rw-r--r-- | arch/powerpc/platforms/52xx/mpc52xx_pic.c | 38 |
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 d0dead8b9a95..8479394e9ab4 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, }; /* |