1 files changed, 86 insertions, 43 deletions

diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 1beb40f692fc..54e91c9e71c8 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -16,20 +16,31 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/sysdev.h>
+#include <linux/io.h>
+#include <linux/irq.h>
 
 #include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/mach/irq.h>
+#include <mach/irqs.h>
 #include <mach/gpio.h>
-#include <mach/regs-intc.h>
 
 #include "generic.h"
 
-#define MAX_INTERNAL_IRQS       128
+#define IRQ_BASE                (void __iomem *)io_p2v(0x40d00000)
+
+#define ICIP                    (0x000)
+#define ICMR                    (0x004)
+#define ICLR                    (0x008)
+#define ICFR                    (0x00c)
+#define ICPR                    (0x010)
+#define ICCR                    (0x014)
+#define ICHP                    (0x018)
+#define IPR(i)                  (((i) < 32) ? (0x01c + ((i) << 2)) :            \
+                                ((i) < 64) ? (0x0b0 + (((i) - 32) << 2)) :      \
+                                      (0x144 + (((i) - 64) << 2)))
+#define IPR_VALID               (1 << 31)
+#define IRQ_BIT(n)              (((n) - PXA_IRQ(0)) & 0x1f)
 
-#define IRQ_BIT(n)      (((n) - PXA_IRQ(0)) & 0x1f)
-#define _ICMR(n)        (*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICMR2 : &ICMR))
-#define _ICLR(n)        (*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICLR2 : &ICLR))
+#define MAX_INTERNAL_IRQS       128
 
 /*
  * This is for peripheral IRQs internal to the PXA chip.
@@ -37,14 +48,27 @@
 
 static int pxa_internal_irq_nr;
 
+static inline int cpu_has_ipr(void)
+{
+        return !cpu_is_pxa25x();
+}
+
 static void pxa_mask_irq(unsigned int irq)
 {
-        _ICMR(irq) &= ~(1 << IRQ_BIT(irq));
+        void __iomem *base = get_irq_chip_data(irq);
+        uint32_t icmr = __raw_readl(base + ICMR);
+
+        icmr &= ~(1 << IRQ_BIT(irq));
+        __raw_writel(icmr, base + ICMR);
 }
 
 static void pxa_unmask_irq(unsigned int irq)
 {
-        _ICMR(irq) |= 1 << IRQ_BIT(irq);
+        void __iomem *base = get_irq_chip_data(irq);
+        uint32_t icmr = __raw_readl(base + ICMR);
+
+        icmr |= 1 << IRQ_BIT(irq);
+        __raw_writel(icmr, base + ICMR);
 }
 
 static struct irq_chip pxa_internal_irq_chip = {
@@ -86,12 +110,16 @@ static void pxa_ack_low_gpio(unsigned int irq)
 
 static void pxa_mask_low_gpio(unsigned int irq)
 {
-        ICMR &= ~(1 << (irq - PXA_IRQ(0)));
+        struct irq_desc *desc = irq_to_desc(irq);
+
+        desc->chip->mask(irq);
 }
 
 static void pxa_unmask_low_gpio(unsigned int irq)
 {
-        ICMR |= 1 << (irq - PXA_IRQ(0));
+        struct irq_desc *desc = irq_to_desc(irq);
+
+        desc->chip->unmask(irq);
 }
 
 static struct irq_chip pxa_low_gpio_chip = {
@@ -120,33 +148,45 @@ static void __init pxa_init_low_gpio_irq(set_wake_t fn)
         pxa_low_gpio_chip.set_wake = fn;
 }
 
+static inline void __iomem *irq_base(int i)
+{
+        static unsigned long phys_base[] = {
+                0x40d00000,
+                0x40d0009c,
+                0x40d00130,
+        };
+
+        return (void __iomem *)io_p2v(phys_base[i >> 5]);
+}
+
 void __init pxa_init_irq(int irq_nr, set_wake_t fn)
 {
-        int irq, i;
+        int irq, i, n;
 
         BUG_ON(irq_nr > MAX_INTERNAL_IRQS);
 
         pxa_internal_irq_nr = irq_nr;
 
-        for (irq = PXA_IRQ(0); irq < PXA_IRQ(irq_nr); irq += 32) {
-                _ICMR(irq) = 0; /* disable all IRQs */
-                _ICLR(irq) = 0; /* all IRQs are IRQ, not FIQ */
-        }
-
-        /* initialize interrupt priority */
-        if (cpu_is_pxa27x() || cpu_is_pxa3xx()) {
-                for (i = 0; i < irq_nr; i++)
-                        IPR(i) = i | (1 << 31);
+        for (n = 0; n < irq_nr; n += 32) {
+                void __iomem *base = irq_base(n);
+
+                __raw_writel(0, base + ICMR);   /* disable all IRQs */
+                __raw_writel(0, base + ICLR);   /* all IRQs are IRQ, not FIQ */
+                for (i = n; (i < (n + 32)) && (i < irq_nr); i++) {
+                        /* initialize interrupt priority */
+                        if (cpu_has_ipr())
+                                __raw_writel(i | IPR_VALID, IRQ_BASE + IPR(i));
+
+                        irq = PXA_IRQ(i);
+                        set_irq_chip(irq, &pxa_internal_irq_chip);
+                        set_irq_chip_data(irq, base);
+                        set_irq_handler(irq, handle_level_irq);
+                        set_irq_flags(irq, IRQF_VALID);
+                }
         }
 
         /* only unmasked interrupts kick us out of idle */
-        ICCR = 1;
-
-        for (irq = PXA_IRQ(0); irq < PXA_IRQ(irq_nr); irq++) {
-                set_irq_chip(irq, &pxa_internal_irq_chip);
-                set_irq_handler(irq, handle_level_irq);
-                set_irq_flags(irq, IRQF_VALID);
-        }
+        __raw_writel(1, irq_base(0) + ICCR);
 
         pxa_internal_irq_chip.set_wake = fn;
         pxa_init_low_gpio_irq(fn);
@@ -158,16 +198,18 @@ static unsigned long saved_ipr[MAX_INTERNAL_IRQS];
 
 static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
 {
-        int i, irq = PXA_IRQ(0);
+        int i;
 
-        for (i = 0; irq < PXA_IRQ(pxa_internal_irq_nr); i++, irq += 32) {
-                saved_icmr[i] = _ICMR(irq);
-                _ICMR(irq) = 0;
+        for (i = 0; i < pxa_internal_irq_nr; i += 32) {
+                void __iomem *base = irq_base(i);
+
+                saved_icmr[i] = __raw_readl(base + ICMR);
+                __raw_writel(0, base + ICMR);
         }
 
-        if (cpu_is_pxa27x() || cpu_is_pxa3xx()) {
+        if (cpu_has_ipr()) {
                 for (i = 0; i < pxa_internal_irq_nr; i++)
-                        saved_ipr[i] = IPR(i);
+                        saved_ipr[i] = __raw_readl(IRQ_BASE + IPR(i));
         }
 
         return 0;
@@ -175,19 +217,20 @@ static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
 
 static int pxa_irq_resume(struct sys_device *dev)
 {
-        int i, irq = PXA_IRQ(0);
+        int i;
 
-        if (cpu_is_pxa27x() || cpu_is_pxa3xx()) {
-                for (i = 0; i < pxa_internal_irq_nr; i++)
-                        IPR(i) = saved_ipr[i];
-        }
+        for (i = 0; i < pxa_internal_irq_nr; i += 32) {
+                void __iomem *base = irq_base(i);
 
-        for (i = 0; irq < PXA_IRQ(pxa_internal_irq_nr); i++, irq += 32) {
-                _ICMR(irq) = saved_icmr[i];
-                _ICLR(irq) = 0;
+                __raw_writel(saved_icmr[i], base + ICMR);
+                __raw_writel(0, base + ICLR);
         }
 
-        ICCR = 1;
+        if (!cpu_is_pxa25x())
+                for (i = 0; i < pxa_internal_irq_nr; i++)
+                        __raw_writel(saved_ipr[i], IRQ_BASE + IPR(i));
+
+        __raw_writel(1, IRQ_BASE + ICCR);
         return 0;
 }
 #else