From f800ab44f5cd094743dc3df371bcf986375f5774 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 16 Apr 2008 01:29:54 +1000 Subject: [POWERPC] mpc5200: add interrupt type function Add a set_type function for external (GPIO) interrupts. Signed-off-by: Juergen Beisert Signed-off-by: Sascha Hauer Signed-off-by: Grant Likely --- arch/powerpc/platforms/52xx/mpc52xx_pic.c | 38 +++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'arch/powerpc/platforms/52xx') 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 #include #include #include @@ -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, }; /* -- cgit v1.2.3