1 files changed, 30 insertions, 8 deletions

diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
index 798f221eb3b7..531b95deadc0 100644
--- a/arch/arm/mach-imx/irq.c
+++ b/arch/arm/mach-imx/irq.c
@@ -26,20 +26,17 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/timer.h>
+#include <linux/io.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
-#include <asm/io.h>
 
 #include <asm/mach/irq.h>
 
 /*
  *
  * We simply use the ENABLE DISABLE registers inside of the IMX
- * to turn on/off specific interrupts.  FIXME- We should
- * also add support for the accelerated interrupt controller
- * by putting offets to irq jump code in the appropriate
- * places.
+ * to turn on/off specific interrupts.
  *
  */
 
@@ -102,6 +99,28 @@ imx_unmask_irq(unsigned int irq)
         __raw_writel(irq, IMX_AITC_INTENNUM);
 }
 
+#ifdef CONFIG_FIQ
+int imx_set_irq_fiq(unsigned int irq, unsigned int type)
+{
+        unsigned int irqt;
+
+        if (irq >= IMX_IRQS)
+                return -EINVAL;
+
+        if (irq < IMX_IRQS / 2) {
+                irqt = __raw_readl(IMX_AITC_INTTYPEL) & ~(1 << irq);
+                __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEL);
+        } else {
+                irq -= IMX_IRQS / 2;
+                irqt = __raw_readl(IMX_AITC_INTTYPEH) & ~(1 << irq);
+                __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEH);
+        }
+
+        return 0;
+}
+EXPORT_SYMBOL(imx_set_irq_fiq);
+#endif /* CONFIG_FIQ */
+
 static int
 imx_gpio_irq_type(unsigned int _irq, unsigned int type)
 {
@@ -182,14 +201,12 @@ static void
 imx_gpio_handler(unsigned int mask, unsigned int irq,
                  struct irq_desc *desc)
 {
-        desc = irq_desc + irq;
         while (mask) {
                 if (mask & 1) {
                         DEBUG_IRQ("handling irq %d\n", irq);
-                        desc_handle_irq(irq, desc);
+                        generic_handle_irq(irq);
                 }
                 irq++;
-                desc++;
                 mask >>= 1;
         }
 }
@@ -286,4 +303,9 @@ imx_init_irq(void)
 
         /* Release masking of interrupts according to priority */
         __raw_writel(-1, IMX_AITC_NIMASK);
+
+#ifdef CONFIG_FIQ
+        /* Initialize FIQ */
+        init_FIQ();
+#endif
 }