mxc irq: make architecture runtime dependent

Currently we depend on hardcoded base addresses for the interrupt
controller. This prevents us from compiling in more than one i.MX
architecture at a time. This patch changes the base address to a
runtime calculated one.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/plat-mxc/irq.c

@@ -24,26 +24,27 @@
 #include <asm/mach/irq.h>
 #include <mach/hardware.h>
 
-#define AVIC_BASE		IO_ADDRESS(AVIC_BASE_ADDR)
-#define AVIC_INTCNTL		(AVIC_BASE + 0x00)	/* int control reg */
-#define AVIC_NIMASK		(AVIC_BASE + 0x04)	/* int mask reg */
-#define AVIC_INTENNUM		(AVIC_BASE + 0x08)	/* int enable number reg */
-#define AVIC_INTDISNUM		(AVIC_BASE + 0x0C)	/* int disable number reg */
-#define AVIC_INTENABLEH		(AVIC_BASE + 0x10)	/* int enable reg high */
-#define AVIC_INTENABLEL		(AVIC_BASE + 0x14)	/* int enable reg low */
-#define AVIC_INTTYPEH		(AVIC_BASE + 0x18)	/* int type reg high */
-#define AVIC_INTTYPEL		(AVIC_BASE + 0x1C)	/* int type reg low */
-#define AVIC_NIPRIORITY(x)	(AVIC_BASE + (0x20 + 4 * (7 - (x)))) /* int priority */
-#define AVIC_NIVECSR		(AVIC_BASE + 0x40)	/* norm int vector/status */
-#define AVIC_FIVECSR		(AVIC_BASE + 0x44)	/* fast int vector/status */
-#define AVIC_INTSRCH		(AVIC_BASE + 0x48)	/* int source reg high */
-#define AVIC_INTSRCL		(AVIC_BASE + 0x4C)	/* int source reg low */
-#define AVIC_INTFRCH		(AVIC_BASE + 0x50)	/* int force reg high */
-#define AVIC_INTFRCL		(AVIC_BASE + 0x54)	/* int force reg low */
-#define AVIC_NIPNDH		(AVIC_BASE + 0x58)	/* norm int pending high */
-#define AVIC_NIPNDL		(AVIC_BASE + 0x5C)	/* norm int pending low */
-#define AVIC_FIPNDH		(AVIC_BASE + 0x60)	/* fast int pending high */
-#define AVIC_FIPNDL		(AVIC_BASE + 0x64)	/* fast int pending low */
+#define AVIC_INTCNTL		0x00	/* int control reg */
+#define AVIC_NIMASK		0x04	/* int mask reg */
+#define AVIC_INTENNUM		0x08	/* int enable number reg */
+#define AVIC_INTDISNUM		0x0C	/* int disable number reg */
+#define AVIC_INTENABLEH		0x10	/* int enable reg high */
+#define AVIC_INTENABLEL		0x14	/* int enable reg low */
+#define AVIC_INTTYPEH		0x18	/* int type reg high */
+#define AVIC_INTTYPEL		0x1C	/* int type reg low */
+#define AVIC_NIPRIORITY(x)	(0x20 + 4 * (7 - (x))) /* int priority */
+#define AVIC_NIVECSR		0x40	/* norm int vector/status */
+#define AVIC_FIVECSR		0x44	/* fast int vector/status */
+#define AVIC_INTSRCH		0x48	/* int source reg high */
+#define AVIC_INTSRCL		0x4C	/* int source reg low */
+#define AVIC_INTFRCH		0x50	/* int force reg high */
+#define AVIC_INTFRCL		0x54	/* int force reg low */
+#define AVIC_NIPNDH		0x58	/* norm int pending high */
+#define AVIC_NIPNDL		0x5C	/* norm int pending low */
+#define AVIC_FIPNDH		0x60	/* fast int pending high */
+#define AVIC_FIPNDL		0x64	/* fast int pending low */
+
+static void __iomem *avic_base;
 
 int imx_irq_set_priority(unsigned char irq, unsigned char prio)
 {
@@ -54,11 +55,11 @@ int imx_irq_set_priority(unsigned char irq, unsigned char prio)
 	if (irq >= MXC_INTERNAL_IRQS)
 		return -EINVAL;;
 
-	temp = __raw_readl(AVIC_NIPRIORITY(irq / 8));
+	temp = __raw_readl(avic_base + AVIC_NIPRIORITY(irq / 8));
 	temp &= ~mask;
 	temp |= prio & mask;
 
-	__raw_writel(temp, AVIC_NIPRIORITY(irq / 8));
+	__raw_writel(temp, avic_base + AVIC_NIPRIORITY(irq / 8));
 
 	return 0;
 #else
@@ -76,12 +77,12 @@ int mxc_set_irq_fiq(unsigned int irq, unsigned int type)
 		return -EINVAL;
 
 	if (irq < MXC_INTERNAL_IRQS / 2) {
-		irqt = __raw_readl(AVIC_INTTYPEL) & ~(1 << irq);
-		__raw_writel(irqt | (!!type << irq), AVIC_INTTYPEL);
+		irqt = __raw_readl(avic_base + AVIC_INTTYPEL) & ~(1 << irq);
+		__raw_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEL);
 	} else {
 		irq -= MXC_INTERNAL_IRQS / 2;
-		irqt = __raw_readl(AVIC_INTTYPEH) & ~(1 << irq);
-		__raw_writel(irqt | (!!type << irq), AVIC_INTTYPEH);
+		irqt = __raw_readl(avic_base + AVIC_INTTYPEH) & ~(1 << irq);
+		__raw_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEH);
 	}
 
 	return 0;
@@ -92,13 +93,13 @@ EXPORT_SYMBOL(mxc_set_irq_fiq);
 /* Disable interrupt number "irq" in the AVIC */
 static void mxc_mask_irq(unsigned int irq)
 {
-	__raw_writel(irq, AVIC_INTDISNUM);
+	__raw_writel(irq, avic_base + AVIC_INTDISNUM);
 }
 
 /* Enable interrupt number "irq" in the AVIC */
 static void mxc_unmask_irq(unsigned int irq)
 {
-	__raw_writel(irq, AVIC_INTENNUM);
+	__raw_writel(irq, avic_base + AVIC_INTENNUM);
 }
 
 static struct irq_chip mxc_avic_chip = {
@@ -116,19 +117,21 @@ void __init mxc_init_irq(void)
 {
 	int i;
 
+	avic_base = IO_ADDRESS(AVIC_BASE_ADDR);
+
 	/* put the AVIC into the reset value with
 	 * all interrupts disabled
 	 */
-	__raw_writel(0, AVIC_INTCNTL);
-	__raw_writel(0x1f, AVIC_NIMASK);
+	__raw_writel(0, avic_base + AVIC_INTCNTL);
+	__raw_writel(0x1f, avic_base + AVIC_NIMASK);
 
 	/* disable all interrupts */
-	__raw_writel(0, AVIC_INTENABLEH);
-	__raw_writel(0, AVIC_INTENABLEL);
+	__raw_writel(0, avic_base + AVIC_INTENABLEH);
+	__raw_writel(0, avic_base + AVIC_INTENABLEL);
 
 	/* all IRQ no FIQ */
-	__raw_writel(0, AVIC_INTTYPEH);
-	__raw_writel(0, AVIC_INTTYPEL);
+	__raw_writel(0, avic_base + AVIC_INTTYPEH);
+	__raw_writel(0, avic_base + AVIC_INTTYPEL);
 	for (i = 0; i < MXC_INTERNAL_IRQS; i++) {
 		set_irq_chip(i, &mxc_avic_chip);
 		set_irq_handler(i, handle_level_irq);
@@ -137,7 +140,7 @@ void __init mxc_init_irq(void)
 
 	/* Set default priority value (0) for all IRQ's */
 	for (i = 0; i < 8; i++)
-		__raw_writel(0, AVIC_NIPRIORITY(i));
+		__raw_writel(0, avic_base + AVIC_NIPRIORITY(i));
 
 	/* init architectures chained interrupt handler */
 	mxc_register_gpios();
@@ -149,3 +152,4 @@ void __init mxc_init_irq(void)
 
 	printk(KERN_INFO "MXC IRQ initialized\n");
 }
+