Pull button into test branch

[linux-drm-fsl-dcu.git] / arch / arm / mach-at91rm9200 / irq.c

diff --git a/arch/arm/mach-at91rm9200/irq.c b/arch/arm/mach-at91rm9200/irq.c
index dcd560dbcfb7ea9bb933a0b93165eeed1472f781..2148daafd29c3535e3b03e0ed0a90d9a4fb2d975 100644 (file)
--- a/arch/arm/mach-at91rm9200/irq.c
+++ b/arch/arm/mach-at91rm9200/irq.c
@@ -34,60 +34,24 @@
 #include <asm/mach/irq.h>
 #include <asm/mach/map.h>
 
-#include "generic.h"
 
-/*
- * The default interrupt priority levels (0 = lowest, 7 = highest).
- */
-static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
-       7,      /* Advanced Interrupt Controller */
-       7,      /* System Peripheral */
-       0,      /* Parallel IO Controller A */
-       0,      /* Parallel IO Controller B */
-       0,      /* Parallel IO Controller C */
-       0,      /* Parallel IO Controller D */
-       6,      /* USART 0 */
-       6,      /* USART 1 */
-       6,      /* USART 2 */
-       6,      /* USART 3 */
-       0,      /* Multimedia Card Interface */
-       4,      /* USB Device Port */
-       0,      /* Two-Wire Interface */
-       6,      /* Serial Peripheral Interface */
-       5,      /* Serial Synchronous Controller */
-       5,      /* Serial Synchronous Controller */
-       5,      /* Serial Synchronous Controller */
-       0,      /* Timer Counter 0 */
-       0,      /* Timer Counter 1 */
-       0,      /* Timer Counter 2 */
-       0,      /* Timer Counter 3 */
-       0,      /* Timer Counter 4 */
-       0,      /* Timer Counter 5 */
-       3,      /* USB Host port */
-       3,      /* Ethernet MAC */
-       0,      /* Advanced Interrupt Controller */
-       0,      /* Advanced Interrupt Controller */
-       0,      /* Advanced Interrupt Controller */
-       0,      /* Advanced Interrupt Controller */
-       0,      /* Advanced Interrupt Controller */
-       0,      /* Advanced Interrupt Controller */
-       0       /* Advanced Interrupt Controller */
-};
-
-
-static void at91rm9200_mask_irq(unsigned int irq)
+static void at91_aic_mask_irq(unsigned int irq)
 {
        /* Disable interrupt on AIC */
        at91_sys_write(AT91_AIC_IDCR, 1 << irq);
 }
 
-static void at91rm9200_unmask_irq(unsigned int irq)
+static void at91_aic_unmask_irq(unsigned int irq)
 {
        /* Enable interrupt on AIC */
        at91_sys_write(AT91_AIC_IECR, 1 << irq);
 }
 
-static int at91rm9200_irq_type(unsigned irq, unsigned type)
+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;
 
@@ -99,14 +63,16 @@ 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 */
+               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 < AT91_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;
@@ -122,7 +88,7 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
 static u32 wakeups;
 static u32 backups;
 
-static int at91rm9200_irq_set_wake(unsigned irq, unsigned value)
+static int at91_aic_set_wake(unsigned irq, unsigned value)
 {
        if (unlikely(irq >= 32))
                return -EINVAL;
@@ -149,28 +115,25 @@ void at91_irq_resume(void)
 }
 
 #else
-#define at91rm9200_irq_set_wake        NULL
+#define at91_aic_set_wake      NULL
 #endif
 
-static struct irqchip at91rm9200_irq_chip = {
-       .ack            = at91rm9200_mask_irq,
-       .mask           = at91rm9200_mask_irq,
-       .unmask         = at91rm9200_unmask_irq,
-       .set_type       = at91rm9200_irq_type,
-       .set_wake       = at91rm9200_irq_set_wake,
+static struct irq_chip at91_aic_chip = {
+       .name           = "AIC",
+       .ack            = at91_aic_mask_irq,
+       .mask           = at91_aic_mask_irq,
+       .unmask         = at91_aic_unmask_irq,
+       .set_type       = at91_aic_set_type,
+       .set_wake       = at91_aic_set_wake,
 };
 
 /*
  * Initialize the AIC interrupt controller.
  */
-void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
+void __init at91_aic_init(unsigned int priority[NR_AIC_IRQS])
 {
        unsigned int i;
 
-       /* No priority list specified for this board -> use defaults */
-       if (priority == NULL)
-               priority = at91rm9200_default_irq_priority;
-
        /*
         * The IVR is used by macro get_irqnr_and_base to read and verify.
         * The irq number is NR_AIC_IRQS when a spurious interrupt has occurred.
@@ -178,11 +141,11 @@ void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
        for (i = 0; i < NR_AIC_IRQS; i++) {
                /* Put irq number in Source Vector Register: */
                at91_sys_write(AT91_AIC_SVR(i), i);
-               /* Store the Source Mode Register as defined in table above */
+               /* Active Low interrupt, with the specified priority */
                at91_sys_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]);
 
-               set_irq_chip(i, &at91rm9200_irq_chip);
-               set_irq_handler(i, do_level_IRQ);
+               set_irq_chip(i, &at91_aic_chip);
+               set_irq_handler(i, handle_level_irq);
                set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
 
                /* Perform 8 End Of Interrupt Command to make sure AIC will not Lock out nIRQ */