[ARM] 4436/1: PXA: move low IRQ initialization code to pxa_init_irq_low()

1. move low IRQ initialization code to pxa_init_irq_low()

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 21 insertions, 15 deletions

diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 844d3de3ef44..42b2da2f213e 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -67,6 +67,26 @@ static struct irq_chip pxa_internal_chip_low = {
         .set_wake       = pxa_set_wake,
 };
 
+void __init pxa_init_irq_low(void)
+{
+        int irq;
+
+        /* disable all IRQs */
+        ICMR = 0;
+
+        /* all IRQs are IRQ, not FIQ */
+        ICLR = 0;
+
+        /* only unmasked interrupts kick us out of idle */
+        ICCR = 1;
+
+        for (irq = PXA_IRQ(0); irq <= PXA_IRQ(31); irq++) {
+                set_irq_chip(irq, &pxa_internal_chip_low);
+                set_irq_handler(irq, handle_level_irq);
+                set_irq_flags(irq, IRQF_VALID);
+        }
+}
+
 #ifdef CONFIG_PXA27x
 
 /*
@@ -331,12 +351,6 @@ void __init pxa_init_irq(void)
 {
         int irq;
 
-        /* disable all IRQs */
-        ICMR = 0;
-
-        /* all IRQs are IRQ, not FIQ */
-        ICLR = 0;
-
         /* clear all GPIO edge detects */
         GFER0 = 0;
         GFER1 = 0;
@@ -355,18 +369,10 @@ void __init pxa_init_irq(void)
         GEDR3 = GEDR3;
 #endif
 
-        /* only unmasked interrupts kick us out of idle */
-        ICCR = 1;
-
         /* GPIO 0 and 1 must have their mask bit always set */
         GPIO_IRQ_mask[0] = 3;
 
-        for (irq = PXA_IRQ(0); irq <= PXA_IRQ(31); irq++) {
-                set_irq_chip(irq, &pxa_internal_chip_low);
-                set_irq_handler(irq, handle_level_irq);
-                set_irq_flags(irq, IRQF_VALID);
-        }
-
+        pxa_init_irq_low();
 #ifdef CONFIG_PXA27x
         pxa_init_irq_high();
 #endif