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>

1 files changed, 39 insertions, 35 deletions

diff --git a/arch/arm/plat-mxc/irq.c b/arch/arm/plat-mxc/irq.c
index 931a0eefaf96..8aee76304f8f 100644
--- a/arch/arm/plat-mxc/irq.c
+++ b/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");
 }
+