[ARM] 3946/1: AT91: at91_arch_reset and at91_extern_irq
The external interrupt sources are different on the various AT91
processors. This patch introduces the global 'at91_extern_irq' variable
that contains a bitset of the available external interrupt sources.
The processor reset mechanism also differs on the various AT91
processors. This patch also adds a global 'at91_arch_reset' callback
(from system.h) into the processor-specific code to perform the reset.
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 3e48811..2cea07a 100644
--- a/arch/arm/mach-at91rm9200/irq.c
+++ b/arch/arm/mach-at91rm9200/irq.c
@@ -47,6 +47,10 @@
at91_sys_write(AT91_AIC_IECR, 1 << irq);
}
+unsigned int at91_extern_irq;
+
+#define is_extern_irq(irq) ((1 << (irq)) & at91_extern_irq)
+
static int at91_aic_set_type(unsigned irq, unsigned type)
{
unsigned int smr, srctype;
@@ -59,14 +63,16 @@
srctype = AT91_AIC_SRCTYPE_RISING;
break;
case IRQT_LOW:
- if ((irq > AT91_ID_FIQ) && (irq < AT91RM9200_ID_IRQ0)) /* only supported on external interrupts */
+ if ((irq == AT91_ID_FIQ) || is_extern_irq(irq)) /* only supported on external interrupts */
+ srctype = AT91_AIC_SRCTYPE_LOW;
+ else
return -EINVAL;
- srctype = AT91_AIC_SRCTYPE_LOW;
break;
case IRQT_FALLING:
- if ((irq > AT91_ID_FIQ) && (irq < AT91RM9200_ID_IRQ0)) /* only supported on external interrupts */
+ if ((irq == AT91_ID_FIQ) || is_extern_irq(irq)) /* only supported on external interrupts */
+ srctype = AT91_AIC_SRCTYPE_FALLING;
+ else
return -EINVAL;
- srctype = AT91_AIC_SRCTYPE_FALLING;
break;
default:
return -EINVAL;