1 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm/mach-clps711x/irq.c b/arch/arm/mach-clps711x/irq.c
new file mode 100644
index 000000000000..7ee926e5bad2
--- /dev/null
+++ b/arch/arm/mach-clps711x/irq.c
@@ -0,0 +1,143 @@
+/*
+ *  linux/arch/arm/mach-clps711x/irq.c
+ *
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/list.h>
+
+#include <asm/mach/irq.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <asm/hardware/clps7111.h>
+
+static void int1_mask(unsigned int irq)
+{
+        u32 intmr1;
+
+        intmr1 = clps_readl(INTMR1);
+        intmr1 &= ~(1 << irq);
+        clps_writel(intmr1, INTMR1);
+}
+
+static void int1_ack(unsigned int irq)
+{
+        u32 intmr1;
+
+        intmr1 = clps_readl(INTMR1);
+        intmr1 &= ~(1 << irq);
+        clps_writel(intmr1, INTMR1);
+
+        switch (irq) {
+        case IRQ_CSINT:  clps_writel(0, COEOI);  break;
+        case IRQ_TC1OI:  clps_writel(0, TC1EOI); break;
+        case IRQ_TC2OI:  clps_writel(0, TC2EOI); break;
+        case IRQ_RTCMI:  clps_writel(0, RTCEOI); break;
+        case IRQ_TINT:   clps_writel(0, TEOI);   break;
+        case IRQ_UMSINT: clps_writel(0, UMSEOI); break;
+        }
+}
+
+static void int1_unmask(unsigned int irq)
+{
+        u32 intmr1;
+
+        intmr1 = clps_readl(INTMR1);
+        intmr1 |= 1 << irq;
+        clps_writel(intmr1, INTMR1);
+}
+
+static struct irqchip int1_chip = {
+        .ack    = int1_ack,
+        .mask   = int1_mask,
+        .unmask = int1_unmask,
+};
+
+static void int2_mask(unsigned int irq)
+{
+        u32 intmr2;
+
+        intmr2 = clps_readl(INTMR2);
+        intmr2 &= ~(1 << (irq - 16));
+        clps_writel(intmr2, INTMR2);
+}
+
+static void int2_ack(unsigned int irq)
+{
+        u32 intmr2;
+
+        intmr2 = clps_readl(INTMR2);
+        intmr2 &= ~(1 << (irq - 16));
+        clps_writel(intmr2, INTMR2);
+
+        switch (irq) {
+        case IRQ_KBDINT: clps_writel(0, KBDEOI); break;
+        }
+}
+
+static void int2_unmask(unsigned int irq)
+{
+        u32 intmr2;
+
+        intmr2 = clps_readl(INTMR2);
+        intmr2 |= 1 << (irq - 16);
+        clps_writel(intmr2, INTMR2);
+}
+
+static struct irqchip int2_chip = {
+        .ack    = int2_ack,
+        .mask   = int2_mask,
+        .unmask = int2_unmask,
+};
+
+void __init clps711x_init_irq(void)
+{
+        unsigned int i;
+
+        for (i = 0; i < NR_IRQS; i++) {
+                if (INT1_IRQS & (1 << i)) {
+                        set_irq_handler(i, do_level_IRQ);
+                        set_irq_chip(i, &int1_chip);
+                        set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+                }
+                if (INT2_IRQS & (1 << i)) {
+                        set_irq_handler(i, do_level_IRQ);
+                        set_irq_chip(i, &int2_chip);
+                        set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+                }                       
+        }
+
+        /*
+         * Disable interrupts
+         */
+        clps_writel(0, INTMR1);
+        clps_writel(0, INTMR2);
+
+        /*
+         * Clear down any pending interrupts
+         */
+        clps_writel(0, COEOI);
+        clps_writel(0, TC1EOI);
+        clps_writel(0, TC2EOI);
+        clps_writel(0, RTCEOI);
+        clps_writel(0, TEOI);
+        clps_writel(0, UMSEOI);
+        clps_writel(0, SYNCIO);
+        clps_writel(0, KBDEOI);
+}