1 files changed, 89 insertions, 0 deletions

diff --git a/arch/sh/boards/se/7780/irq.c b/arch/sh/boards/se/7780/irq.c
new file mode 100644
index 000000000000..3d0625c2d07b
--- /dev/null
+++ b/arch/sh/boards/se/7780/irq.c
@@ -0,0 +1,89 @@
+/*
+ * linux/arch/sh/boards/se/7780/irq.c
+ *
+ * Copyright (C) 2006,2007  Nobuhiro Iwamatsu
+ *
+ * Hitachi UL SolutionEngine 7780 Support.
+ *
+ * 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 <asm/irq.h>
+#include <asm/io.h>
+#include <asm/se7780.h>
+
+#define INTC_INTMSK0             0xFFD00044
+#define INTC_INTMSKCLR0          0xFFD00064
+
+static void disable_se7780_irq(unsigned int irq)
+{
+        struct intc2_data *p = get_irq_chip_data(irq);
+        ctrl_outl(1 << p->msk_shift, INTC_INTMSK0 + p->msk_offset);
+}
+
+static void enable_se7780_irq(unsigned int irq)
+{
+        struct intc2_data *p = get_irq_chip_data(irq);
+        ctrl_outl(1 << p->msk_shift, INTC_INTMSKCLR0 + p->msk_offset);
+}
+
+static struct irq_chip se7780_irq_chip __read_mostly = {
+        .name           = "SE7780",
+        .mask           = disable_se7780_irq,
+        .unmask         = enable_se7780_irq,
+        .mask_ack       = disable_se7780_irq,
+};
+
+static struct intc2_data intc2_irq_table[] = {
+        { 2,  0, 31, 0, 31, 3 }, /* daughter board EXTINT1 */
+        { 4,  0, 30, 0, 30, 3 }, /* daughter board EXTINT2 */
+        { 6,  0, 29, 0, 29, 3 }, /* daughter board EXTINT3 */
+        { 8,  0, 28, 0, 28, 3 }, /* SMC 91C111 (LAN) */
+        { 10, 0, 27, 0, 27, 3 }, /* daughter board EXTINT4 */
+        { 4,  0, 30, 0, 30, 3 }, /* daughter board EXTINT5 */
+        { 2,  0, 31, 0, 31, 3 }, /* daughter board EXTINT6 */
+        { 2,  0, 31, 0, 31, 3 }, /* daughter board EXTINT7 */
+        { 2,  0, 31, 0, 31, 3 }, /* daughter board EXTINT8 */
+        { 0 , 0, 24, 0, 24, 3 }, /* SM501 */
+};
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_se7780_IRQ(void)
+{
+        int i ;
+
+        /* enable all interrupt at FPGA */
+        ctrl_outw(0, FPGA_INTMSK1);
+        /* mask SM501 interrupt */
+        ctrl_outw((ctrl_inw(FPGA_INTMSK1) | 0x0002), FPGA_INTMSK1);
+        /* enable all interrupt at FPGA */
+        ctrl_outw(0, FPGA_INTMSK2);
+
+        /* set FPGA INTSEL register */
+        /* FPGA + 0x06 */
+        ctrl_outw( ((IRQPIN_SM501 << IRQPOS_SM501) |
+                (IRQPIN_SMC91CX << IRQPOS_SMC91CX)), FPGA_INTSEL1);
+
+        /* FPGA + 0x08 */
+        ctrl_outw(((IRQPIN_EXTINT4 << IRQPOS_EXTINT4) |
+                (IRQPIN_EXTINT3 << IRQPOS_EXTINT3) |
+                (IRQPIN_EXTINT2 << IRQPOS_EXTINT2) |
+                (IRQPIN_EXTINT1 << IRQPOS_EXTINT1)), FPGA_INTSEL2);
+
+        /* FPGA + 0x0A */
+        ctrl_outw((IRQPIN_PCCPW << IRQPOS_PCCPW), FPGA_INTSEL3);
+
+        for (i = 0; i < ARRAY_SIZE(intc2_irq_table); i++) {
+                disable_irq_nosync(intc2_irq_table[i].irq);
+                set_irq_chip_and_handler_name( intc2_irq_table[i].irq, &se7780_irq_chip,
+                        handle_level_irq, "level");
+                set_irq_chip_data( intc2_irq_table[i].irq, &intc2_irq_table[i] );
+                disable_se7780_irq(intc2_irq_table[i].irq);
+        }
+}