1 files changed, 65 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-se/7780/irq.c b/arch/sh/boards/mach-se/7780/irq.c
new file mode 100644
index 000000000..d427dfd71
--- /dev/null
+++ b/arch/sh/boards/mach-se/7780/irq.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/sh/boards/se/7780/irq.c
+ *
+ * Copyright (C) 2006,2007  Nobuhiro Iwamatsu
+ *
+ * Hitachi UL SolutionEngine 7780 Support.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <mach-se/mach/se7780.h>
+
+#define INTC_BASE	0xffd00000
+#define INTC_ICR1	(INTC_BASE+0x1c)
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_se7780_IRQ(void)
+{
+	/* enable all interrupt at FPGA */
+	__raw_writew(0, FPGA_INTMSK1);
+	/* mask SM501 interrupt */
+	__raw_writew((__raw_readw(FPGA_INTMSK1) | 0x0002), FPGA_INTMSK1);
+	/* enable all interrupt at FPGA */
+	__raw_writew(0, FPGA_INTMSK2);
+
+	/* set FPGA INTSEL register */
+	/* FPGA + 0x06 */
+	__raw_writew( ((IRQPIN_SM501 << IRQPOS_SM501) |
+		(IRQPIN_SMC91CX << IRQPOS_SMC91CX)), FPGA_INTSEL1);
+
+	/* FPGA + 0x08 */
+	__raw_writew(((IRQPIN_EXTINT4 << IRQPOS_EXTINT4) |
+		(IRQPIN_EXTINT3 << IRQPOS_EXTINT3) |
+		(IRQPIN_EXTINT2 << IRQPOS_EXTINT2) |
+		(IRQPIN_EXTINT1 << IRQPOS_EXTINT1)), FPGA_INTSEL2);
+
+	/* FPGA + 0x0A */
+	__raw_writew((IRQPIN_PCCPW << IRQPOS_PCCPW), FPGA_INTSEL3);
+
+	plat_irq_setup_pins(IRQ_MODE_IRQ); /* install handlers for IRQ0-7 */
+
+	/* ICR1: detect low level(for 2ndcut) */
+	__raw_writel(0xAAAA0000, INTC_ICR1);
+
+	/*
+	 * FPGA PCISEL register initialize
+	 *
+	 *  CPU  || SLOT1 | SLOT2 | S-ATA | USB
+	 *  -------------------------------------
+	 *  INTA || INTA  | INTD  |  --   | INTB
+	 *  -------------------------------------
+	 *  INTB || INTB  | INTA  |  --   | INTC
+	 *  -------------------------------------
+	 *  INTC || INTC  | INTB  | INTA  |  --
+	 *  -------------------------------------
+	 *  INTD || INTD  | INTC  |  --   | INTA
+	 *  -------------------------------------
+	 */
+	__raw_writew(0x0013, FPGA_PCI_INTSEL1);
+	__raw_writew(0xE402, FPGA_PCI_INTSEL2);
+}