1 files changed, 56 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-landisk/irq.c b/arch/sh/boards/mach-landisk/irq.c
new file mode 100644
index 000000000000..d0f9378f6ff4
--- /dev/null
+++ b/arch/sh/boards/mach-landisk/irq.c
@@ -0,0 +1,56 @@
+/*
+ * arch/sh/boards/landisk/irq.c
+ *
+ * I-O DATA Device, Inc. LANDISK Support
+ *
+ * Copyright (C) 2005-2007 kogiidena
+ *
+ * Copyright (C) 2001  Ian da Silva, Jeremy Siegel
+ * Based largely on io_se.c.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <mach/iodata_landisk.h>
+
+static void disable_landisk_irq(unsigned int irq)
+{
+        unsigned char mask = 0xff ^ (0x01 << (irq - 5));
+
+        ctrl_outb(ctrl_inb(PA_IMASK) & mask, PA_IMASK);
+}
+
+static void enable_landisk_irq(unsigned int irq)
+{
+        unsigned char value = (0x01 << (irq - 5));
+
+        ctrl_outb(ctrl_inb(PA_IMASK) | value, PA_IMASK);
+}
+
+static struct irq_chip landisk_irq_chip __read_mostly = {
+        .name           = "LANDISK",
+        .mask           = disable_landisk_irq,
+        .unmask         = enable_landisk_irq,
+        .mask_ack       = disable_landisk_irq,
+};
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_landisk_IRQ(void)
+{
+        int i;
+
+        for (i = 5; i < 14; i++) {
+                disable_irq_nosync(i);
+                set_irq_chip_and_handler_name(i, &landisk_irq_chip,
+                                              handle_level_irq, "level");
+                enable_landisk_irq(i);
+        }
+        ctrl_outb(0x00, PA_PWRINT_CLR);
+}