[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>
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1 changed files with 4 additions and 4 deletions
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@ -92,10 +92,6 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
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{
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unsigned int smr, srctype;
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/* change triggering only for FIQ and external IRQ0..IRQ6 */
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if ((irq < AT91_ID_IRQ0) && (irq != AT91_ID_FIQ))
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return -EINVAL;
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switch (type) {
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case IRQT_HIGH:
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srctype = AT91_AIC_SRCTYPE_HIGH;
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@ -104,9 +100,13 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
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srctype = AT91_AIC_SRCTYPE_RISING;
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break;
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case IRQT_LOW:
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if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0)) /* only supported on external interrupts */
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return -EINVAL;
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srctype = AT91_AIC_SRCTYPE_LOW;
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break;
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case IRQT_FALLING:
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if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0)) /* only supported on external interrupts */
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return -EINVAL;
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srctype = AT91_AIC_SRCTYPE_FALLING;
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break;
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default:
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