1 files changed, 83 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-highlander/irq-r7785rp.c b/arch/sh/boards/mach-highlander/irq-r7785rp.c
new file mode 100644
index 0000000000..0ebebbed0d
--- /dev/null
+++ b/arch/sh/boards/mach-highlander/irq-r7785rp.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas Solutions Highlander R7785RP Support.
+ *
+ * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2006 - 2008  Paul Mundt
+ * Copyright (C) 2007  Magnus Damm
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <mach/highlander.h>
+
+enum {
+	UNUSED = 0,
+
+	/* FPGA specific interrupt sources */
+	CF,		/* Compact Flash */
+	SMBUS,		/* SMBUS */
+	TP,		/* Touch panel */
+	RTC,		/* RTC Alarm */
+	TH_ALERT,	/* Temperature sensor */
+	AX88796,	/* Ethernet controller */
+
+	/* external bus connector */
+	EXT0, EXT1, EXT2, EXT3, EXT4, EXT5, EXT6, EXT7,
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_IRQ(CF, IRQ_CF),
+	INTC_IRQ(SMBUS, IRQ_SMBUS),
+	INTC_IRQ(TP, IRQ_TP),
+	INTC_IRQ(RTC, IRQ_RTC),
+	INTC_IRQ(TH_ALERT, IRQ_TH_ALERT),
+
+	INTC_IRQ(EXT0, IRQ_EXT0), INTC_IRQ(EXT1, IRQ_EXT1),
+	INTC_IRQ(EXT2, IRQ_EXT2), INTC_IRQ(EXT3, IRQ_EXT3),
+
+	INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
+	INTC_IRQ(EXT6, IRQ_EXT6), INTC_IRQ(EXT7, IRQ_EXT7),
+
+	INTC_IRQ(AX88796, IRQ_AX88796),
+};
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+	{ 0xa4000010, 0, 16, /* IRLMCR1 */
+	  { 0, 0, 0, 0, CF, AX88796, SMBUS, TP,
+	    RTC, 0, TH_ALERT, 0, 0, 0, 0, 0 } },
+	{ 0xa4000012, 0, 16, /* IRLMCR2 */
+	  { 0, 0, 0, 0, 0, 0, 0, 0,
+	    EXT7, EXT6, EXT5, EXT4, EXT3, EXT2, EXT1, EXT0 } },
+};
+
+static unsigned char irl2irq[HL_NR_IRL] __initdata = {
+	0, IRQ_CF, IRQ_EXT4, IRQ_EXT5,
+	IRQ_EXT6, IRQ_EXT7, IRQ_SMBUS, IRQ_TP,
+	IRQ_RTC, IRQ_TH_ALERT, IRQ_AX88796, IRQ_EXT0,
+	IRQ_EXT1, IRQ_EXT2, IRQ_EXT3,
+};
+
+static DECLARE_INTC_DESC(intc_desc, "r7785rp", vectors,
+			 NULL, mask_registers, NULL, NULL);
+
+unsigned char * __init highlander_plat_irq_setup(void)
+{
+	if ((__raw_readw(0xa4000158) & 0xf000) != 0x1000)
+		return NULL;
+
+	printk(KERN_INFO "Using r7785rp interrupt controller.\n");
+
+	__raw_writew(0x0000, PA_IRLSSR1);	/* FPGA IRLSSR1(CF_CD clear) */
+
+	/* Setup the FPGA IRL */
+	__raw_writew(0x0000, PA_IRLPRA);	/* FPGA IRLA */
+	__raw_writew(0xe598, PA_IRLPRB);	/* FPGA IRLB */
+	__raw_writew(0x7060, PA_IRLPRC);	/* FPGA IRLC */
+	__raw_writew(0x0000, PA_IRLPRD);	/* FPGA IRLD */
+	__raw_writew(0x4321, PA_IRLPRE);	/* FPGA IRLE */
+	__raw_writew(0xdcba, PA_IRLPRF);	/* FPGA IRLF */
+
+	register_intc_controller(&intc_desc);
+	return irl2irq;
+}