From: Andrew Victor <andrew@sanpeople.com>
Date: Mon, 19 Jun 2006 14:26:52 +0000 (+0100)
Subject: [ARM] 3582/1: AT91RM9200 IRQ trigger types
X-Git-Tag: v2.6.18-rc1~1098^2~5^2~14
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37f2e4bc120bd784e7f69f961233e1c16b74d170;p=linux-2.6

[ARM] 3582/1: AT91RM9200 IRQ trigger types

Patch from Andrew Victor

The AIC interrupt controller's set_irq_type() can also be used for
internal interrupts.  IRQT_LOW and IRQT_FALLING are the only options not
supported for the internal interrupts.

[Original patch from Karl Olsen]

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/mach-at91rm9200/irq.c b/arch/arm/mach-at91rm9200/irq.c
index cb62bc83a1..cc545b2c43 100644
--- a/arch/arm/mach-at91rm9200/irq.c
+++ b/arch/arm/mach-at91rm9200/irq.c
@@ -92,10 +92,6 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
 {
 	unsigned int smr, srctype;
 
-	/* change triggering only for FIQ and external IRQ0..IRQ6 */
-	if ((irq < AT91_ID_IRQ0) && (irq != AT91_ID_FIQ))
-		return -EINVAL;
-
 	switch (type) {
 	case IRQT_HIGH:
 		srctype = AT91_AIC_SRCTYPE_HIGH;
@@ -104,9 +100,13 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
 		srctype = AT91_AIC_SRCTYPE_RISING;
 		break;
 	case IRQT_LOW:
+		if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0))	/* only supported on external interrupts */
+			return -EINVAL;
 		srctype = AT91_AIC_SRCTYPE_LOW;
 		break;
 	case IRQT_FALLING:
+		if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0))	/* only supported on external interrupts */
+			return -EINVAL;
 		srctype = AT91_AIC_SRCTYPE_FALLING;
 		break;
 	default: