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Commit 37f2e4bc authored by Andrew Victor's avatar Andrew Victor Committed by Russell King
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[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: default avatarAndrew Victor <andrew@sanpeople.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 10e8e1fb

arch/arm/mach-at91rm9200/irq.c

+4 −4
Original line number Diff line number Diff line
@@ -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: