[ARM] Separate VIC (vectored interrupt controller) support from Versatile

Other machines may wish to make use of the VIC support code, so
move it to arch/arm/common.

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

1 files changed, 5 insertions, 53 deletions

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 90023745b23a..9ebbe808b41d 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -35,6 +35,7 @@
 #include <asm/leds.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/icst307.h>
+#include <asm/hardware/vic.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
@@ -56,24 +57,6 @@
 #define VA_VIC_BASE             __io_address(VERSATILE_VIC_BASE)
 #define VA_SIC_BASE             __io_address(VERSATILE_SIC_BASE)
 
-static void vic_mask_irq(unsigned int irq)
-{
-        irq -= IRQ_VIC_START;
-        writel(1 << irq, VA_VIC_BASE + VIC_IRQ_ENABLE_CLEAR);
-}
-
-static void vic_unmask_irq(unsigned int irq)
-{
-        irq -= IRQ_VIC_START;
-        writel(1 << irq, VA_VIC_BASE + VIC_IRQ_ENABLE);
-}
-
-static struct irqchip vic_chip = {
-        .ack    = vic_mask_irq,
-        .mask   = vic_mask_irq,
-        .unmask = vic_unmask_irq,
-};
-
 static void sic_mask_irq(unsigned int irq)
 {
         irq -= IRQ_SIC_START;
@@ -127,43 +110,12 @@ sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 
 void __init versatile_init_irq(void)
 {
-        unsigned int i, value;
-
-        /* Disable all interrupts initially. */
+        unsigned int i;
 
-        writel(0, VA_VIC_BASE + VIC_INT_SELECT);
-        writel(0, VA_VIC_BASE + VIC_IRQ_ENABLE);
-        writel(~0, VA_VIC_BASE + VIC_IRQ_ENABLE_CLEAR);
-        writel(0, VA_VIC_BASE + VIC_IRQ_STATUS);
-        writel(0, VA_VIC_BASE + VIC_ITCR);
-        writel(~0, VA_VIC_BASE + VIC_IRQ_SOFT_CLEAR);
-
-        /*
-         * Make sure we clear all existing interrupts
-         */
-        writel(0, VA_VIC_BASE + VIC_VECT_ADDR);
-        for (i = 0; i < 19; i++) {
-                value = readl(VA_VIC_BASE + VIC_VECT_ADDR);
-                writel(value, VA_VIC_BASE + VIC_VECT_ADDR);
-        }
-
-        for (i = 0; i < 16; i++) {
-                value = readl(VA_VIC_BASE + VIC_VECT_CNTL0 + (i * 4));
-                writel(value | VICVectCntl_Enable | i, VA_VIC_BASE + VIC_VECT_CNTL0 + (i * 4));
-        }
-
-        writel(32, VA_VIC_BASE + VIC_DEF_VECT_ADDR);
-
-        for (i = IRQ_VIC_START; i <= IRQ_VIC_END; i++) {
-                if (i != IRQ_VICSOURCE31) {
-                        set_irq_chip(i, &vic_chip);
-                        set_irq_handler(i, do_level_IRQ);
-                        set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-                }
-        }
+        vic_init(VA_VIC_BASE, ~(1 << 31));
 
         set_irq_handler(IRQ_VICSOURCE31, sic_handle_irq);
-        vic_unmask_irq(IRQ_VICSOURCE31);
+        enable_irq(IRQ_VICSOURCE31);
 
         /* Do second interrupt controller */
         writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
@@ -877,7 +829,7 @@ static unsigned long versatile_gettimeoffset(void)
         ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff;
         do {
                 ticks1 = ticks2;
-                status = __raw_readl(VA_IC_BASE + VIC_IRQ_RAW_STATUS);
+                status = __raw_readl(VA_IC_BASE + VIC_RAW_STATUS);
                 ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff;
         } while (ticks2 > ticks1);