* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.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 at91_aic_mask_irq(unsigned int irq)
+
+static void at91rm9200_mask_irq(unsigned int irq)
{
/* Disable interrupt on AIC */
at91_sys_write(AT91_AIC_IDCR, 1 << irq);
}
-static void at91_aic_unmask_irq(unsigned int irq)
+static void at91rm9200_unmask_irq(unsigned int irq)
{
/* Enable interrupt on AIC */
at91_sys_write(AT91_AIC_IECR, 1 << irq);
}
-static int at91_aic_set_type(unsigned irq, unsigned type)
+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;
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:
return 0;
}
-#ifdef CONFIG_PM
-
-static u32 wakeups;
-static u32 backups;
-
-static int at91_aic_set_wake(unsigned irq, unsigned value)
-{
- if (unlikely(irq >= 32))
- return -EINVAL;
-
- if (value)
- wakeups |= (1 << irq);
- else
- wakeups &= ~(1 << irq);
-
- return 0;
-}
-
-void at91_irq_suspend(void)
-{
- backups = at91_sys_read(AT91_AIC_IMR);
- at91_sys_write(AT91_AIC_IDCR, backups);
- at91_sys_write(AT91_AIC_IECR, wakeups);
-}
-
-void at91_irq_resume(void)
-{
- at91_sys_write(AT91_AIC_IDCR, wakeups);
- at91_sys_write(AT91_AIC_IECR, backups);
-}
-
-#else
-#define at91_aic_set_wake NULL
-#endif
-
-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,
+static struct irqchip at91rm9200_irq_chip = {
+ .ack = at91rm9200_mask_irq,
+ .mask = at91rm9200_mask_irq,
+ .unmask = at91rm9200_unmask_irq,
+ .set_type = at91rm9200_irq_type,
};
/*
* Initialize the AIC interrupt controller.
*/
-void __init at91_aic_init(unsigned int priority[NR_AIC_IRQS])
+void __init at91rm9200_init_irq(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.
for (i = 0; i < NR_AIC_IRQS; i++) {
/* Put irq number in Source Vector Register: */
at91_sys_write(AT91_AIC_SVR(i), i);
- /* Active Low interrupt, with the specified priority */
+ /* Store the Source Mode Register as defined in table above */
at91_sys_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]);
- set_irq_chip(i, &at91_aic_chip);
+ set_irq_chip(i, &at91rm9200_irq_chip);
set_irq_handler(i, do_level_IRQ);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);