[ARM] 4435/1: PXA: remove PXA_INTERNAL_IRQS

1. define PXA_GPIO_IRQ_BASE to be right after the internal IRQs,
   and define PXA_GPIO_IRQ_NUM to be 128 for all PXA2xx variants

2. make the code specific to the high IRQ numbers (32..64) to be
   PXA27x specific

3. add a function pxa_init_irq_high() to initialize the internal
   high IRQ chip, the invoke of this function could be moved to
   PXA27x specific initialization code
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/irq.c

@@ -67,7 +67,7 @@ static struct irq_chip pxa_internal_chip_low = {
 	.set_wake	= pxa_set_wake,
 };
 
-#if PXA_INTERNAL_IRQS > 32
+#ifdef CONFIG_PXA27x
 
 /*
  * This is for the second set of internal IRQs as found on the PXA27x.
@@ -90,6 +90,19 @@ static struct irq_chip pxa_internal_chip_high = {
 	.unmask		= pxa_unmask_high_irq,
 };
 
+void __init pxa_init_irq_high(void)
+{
+	int irq;
+
+	ICMR2 = 0;
+	ICLR2 = 0;
+
+	for (irq = PXA_IRQ(32); irq < PXA_IRQ(64); irq++) {
+		set_irq_chip(irq, &pxa_internal_chip_high);
+		set_irq_handler(irq, handle_level_irq);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+}
 #endif
 
 /* Note that if an input/irq line ever gets changed to an output during
@@ -314,7 +327,6 @@ static struct irq_chip pxa_muxed_gpio_chip = {
 	.set_wake	= pxa_set_gpio_wake,
 };
 
-
 void __init pxa_init_irq(void)
 {
 	int irq;
@@ -338,8 +350,6 @@ void __init pxa_init_irq(void)
 
 #ifdef CONFIG_PXA27x
 	/* And similarly for the extra regs on the PXA27x */
-	ICMR2 = 0;
-	ICLR2 = 0;
 	GFER3 = 0;
 	GRER3 = 0;
 	GEDR3 = GEDR3;
@@ -357,12 +367,8 @@ void __init pxa_init_irq(void)
 		set_irq_flags(irq, IRQF_VALID);
 	}
 
-#if PXA_INTERNAL_IRQS > 32
-	for (irq = PXA_IRQ(32); irq < PXA_IRQ(PXA_INTERNAL_IRQS); irq++) {
-		set_irq_chip(irq, &pxa_internal_chip_high);
-		set_irq_handler(irq, handle_level_irq);
-		set_irq_flags(irq, IRQF_VALID);
-	}
+#ifdef CONFIG_PXA27x
+	pxa_init_irq_high();
 #endif
 
 	for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) {

include/asm-arm/arch-pxa/irqs.h

@@ -55,18 +55,15 @@
 #ifdef CONFIG_PXA27x
 #define IRQ_TPM		PXA_IRQ(32)	/* TPM interrupt */
 #define IRQ_CAMERA	PXA_IRQ(33)	/* Camera Interface */
-
-#define PXA_INTERNAL_IRQS 34
-#else
-#define PXA_INTERNAL_IRQS 32
 #endif
 
-#define GPIO_2_x_TO_IRQ(x)	\
-			PXA_IRQ((x) - 2 + PXA_INTERNAL_IRQS)
+#define PXA_GPIO_IRQ_BASE	(64)
+#define PXA_GPIO_IRQ_NUM	(128)
+
+#define GPIO_2_x_TO_IRQ(x)	(PXA_GPIO_IRQ_BASE + (x))
 #define IRQ_GPIO(x)	(((x) < 2) ? (IRQ_GPIO0 + (x)) : GPIO_2_x_TO_IRQ(x))
 
-#define IRQ_TO_GPIO_2_x(i)	\
-			((i) - IRQ_GPIO(2) + 2)
+#define IRQ_TO_GPIO_2_x(i)	((i) - PXA_GPIO_IRQ_BASE)
 #define IRQ_TO_GPIO(i)	(((i) < IRQ_GPIO(2)) ? ((i) - IRQ_GPIO0) : IRQ_TO_GPIO_2_x(i))
 
 #if defined(CONFIG_PXA25x)
@@ -81,7 +78,7 @@
  * these.  If you need more, increase IRQ_BOARD_END, but keep it
  * within sensible limits.
  */
-#define IRQ_BOARD_START		(IRQ_GPIO(PXA_LAST_GPIO) + 1)
+#define IRQ_BOARD_START		(PXA_GPIO_IRQ_BASE + PXA_GPIO_IRQ_NUM)
 #define IRQ_BOARD_END		(IRQ_BOARD_START + 16)
 
 #define IRQ_SA1111_START	(IRQ_BOARD_END)