sh: Add ms7724se (SH7724) board support

This adds preliminary support for the ms7724se solution engine board.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/Kconfig

@@ -46,6 +46,15 @@ config SH_7722_SOLUTION_ENGINE
 	  Select 7722 SolutionEngine if configuring for a Hitachi SH772
 	  evaluation board.
 
+config SH_7724_SOLUTION_ENGINE
+	bool "SolutionEngine7724"
+	select SOLUTION_ENGINE
+	depends on CPU_SUBTYPE_SH7724
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	  Select 7724 SolutionEngine if configuring for a Hitachi SH7724
+	  evaluation board.
+
 config SH_7751_SOLUTION_ENGINE
 	bool "SolutionEngine7751"
 	select SOLUTION_ENGINE

arch/sh/boards/mach-se/7724/Makefile

+#
+# Makefile for the HITACHI UL SolutionEngine 7724 specific parts of the kernel
+#
+# 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.
+#
+#
+
+obj-y	 := setup.o irq.o
\ No newline at end of file

arch/sh/boards/mach-se/7724/irq.c

+/*
+ * linux/arch/sh/boards/se/7724/irq.c
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ *
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Based on  linux/arch/sh/boards/se/7722/irq.c
+ * Copyright (C) 2007  Nobuhiro Iwamatsu
+ *
+ * Hitachi UL SolutionEngine 7724 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 <mach-se/mach/se7724.h>
+
+struct fpga_irq {
+	unsigned long  sraddr;
+	unsigned long  mraddr;
+	unsigned short mask;
+	unsigned int   base;
+};
+
+static unsigned int fpga2irq(unsigned int irq)
+{
+	if (irq >= IRQ0_BASE &&
+	    irq <= IRQ0_END)
+		return IRQ0_IRQ;
+	else if (irq >= IRQ1_BASE &&
+		 irq <= IRQ1_END)
+		return IRQ1_IRQ;
+	else
+		return IRQ2_IRQ;
+}
+
+static struct fpga_irq get_fpga_irq(unsigned int irq)
+{
+	struct fpga_irq set;
+
+	switch (irq) {
+	case IRQ0_IRQ:
+		set.sraddr = IRQ0_SR;
+		set.mraddr = IRQ0_MR;
+		set.mask   = IRQ0_MASK;
+		set.base   = IRQ0_BASE;
+		break;
+	case IRQ1_IRQ:
+		set.sraddr = IRQ1_SR;
+		set.mraddr = IRQ1_MR;
+		set.mask   = IRQ1_MASK;
+		set.base   = IRQ1_BASE;
+		break;
+	default:
+		set.sraddr = IRQ2_SR;
+		set.mraddr = IRQ2_MR;
+		set.mask   = IRQ2_MASK;
+		set.base   = IRQ2_BASE;
+		break;
+	}
+
+	return set;
+}
+
+static void disable_se7724_irq(unsigned int irq)
+{
+	struct fpga_irq set = get_fpga_irq(fpga2irq(irq));
+	unsigned int bit = irq - set.base;
+	ctrl_outw(ctrl_inw(set.mraddr) | 0x0001 << bit, set.mraddr);
+}
+
+static void enable_se7724_irq(unsigned int irq)
+{
+	struct fpga_irq set = get_fpga_irq(fpga2irq(irq));
+	unsigned int bit = irq - set.base;
+	ctrl_outw(ctrl_inw(set.mraddr) & ~(0x0001 << bit), set.mraddr);
+}
+
+static struct irq_chip se7724_irq_chip __read_mostly = {
+	.name           = "SE7724-FPGA",
+	.mask           = disable_se7724_irq,
+	.unmask         = enable_se7724_irq,
+	.mask_ack       = disable_se7724_irq,
+};
+
+static void se7724_irq_demux(unsigned int irq, struct irq_desc *desc)
+{
+	struct fpga_irq set = get_fpga_irq(irq);
+	unsigned short intv = ctrl_inw(set.sraddr);
+	struct irq_desc *ext_desc;
+	unsigned int ext_irq = set.base;
+
+	intv &= set.mask;
+
+	while (intv) {
+		if (intv & 0x0001) {
+			ext_desc = irq_desc + ext_irq;
+			handle_level_irq(ext_irq, ext_desc);
+		}
+		intv >>= 1;
+		ext_irq++;
+	}
+}
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_se7724_IRQ(void)
+{
+	int i;
+
+	ctrl_outw(0xffff, IRQ0_MR);  /* mask all */
+	ctrl_outw(0xffff, IRQ1_MR);  /* mask all */
+	ctrl_outw(0xffff, IRQ2_MR);  /* mask all */
+	ctrl_outw(0x0000, IRQ0_SR);  /* clear irq */
+	ctrl_outw(0x0000, IRQ1_SR);  /* clear irq */
+	ctrl_outw(0x0000, IRQ2_SR);  /* clear irq */
+	ctrl_outw(0x002a, IRQ_MODE); /* set irq type */
+
+	for (i = 0; i < SE7724_FPGA_IRQ_NR; i++)
+		set_irq_chip_and_handler_name(SE7724_FPGA_IRQ_BASE + i,
+					      &se7724_irq_chip,
+					      handle_level_irq, "level");
+
+	set_irq_chained_handler(IRQ0_IRQ, se7724_irq_demux);
+	set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
+
+	set_irq_chained_handler(IRQ1_IRQ, se7724_irq_demux);
+	set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW);
+
+	set_irq_chained_handler(IRQ2_IRQ, se7724_irq_demux);
+	set_irq_type(IRQ2_IRQ, IRQ_TYPE_LEVEL_LOW);
+}

arch/sh/boards/mach-se/Makefile

@@ -7,3 +7,4 @@ obj-$(CONFIG_SH_7751_SOLUTION_ENGINE)	+= 7751/
 obj-$(CONFIG_SH_7780_SOLUTION_ENGINE)	+= 7780/
 obj-$(CONFIG_SH_7343_SOLUTION_ENGINE)	+= 7343/
 obj-$(CONFIG_SH_7721_SOLUTION_ENGINE)	+= 7721/
+obj-$(CONFIG_SH_7724_SOLUTION_ENGINE)	+= 7724/

arch/sh/include/mach-se/mach/se7724.h

+#ifndef __ASM_SH_SE7724_H
+#define __ASM_SH_SE7724_H
+
+/*
+ * linux/include/asm-sh/se7724.h
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ *
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Hitachi UL SolutionEngine 7724 Support.
+ *
+ * Based on se7722.h
+ * Copyright (C) 2007  Nobuhiro Iwamatsu
+ *
+ * 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 <asm/addrspace.h>
+
+#define PA_LED		(0xba203000)	/* 8bit LED */
+#define IRQ_MODE	(0xba200010)
+#define IRQ0_SR		(0xba200014)
+#define IRQ1_SR		(0xba200018)
+#define IRQ2_SR		(0xba20001c)
+#define IRQ0_MR		(0xba200020)
+#define IRQ1_MR		(0xba200024)
+#define IRQ2_MR		(0xba200028)
+
+/* IRQ */
+#define IRQ0_IRQ        32
+#define IRQ1_IRQ        33
+#define IRQ2_IRQ        34
+
+/* Bits in IRQ012 registers */
+#define SE7724_FPGA_IRQ_BASE	220
+
+/* IRQ0 */
+#define IRQ0_BASE	SE7724_FPGA_IRQ_BASE
+#define IRQ0_KEY	(IRQ0_BASE + 12)
+#define IRQ0_RMII	(IRQ0_BASE + 13)
+#define IRQ0_SMC	(IRQ0_BASE + 14)
+#define IRQ0_MASK	0x7fff
+#define IRQ0_END	IRQ0_SMC
+/* IRQ1 */
+#define IRQ1_BASE	(IRQ0_END + 1)
+#define IRQ1_TS		(IRQ1_BASE + 0)
+#define IRQ1_MASK	0x0001
+#define IRQ1_END	IRQ1_TS
+/* IRQ2 */
+#define IRQ2_BASE	(IRQ1_END + 1)
+#define IRQ2_USB0	(IRQ1_BASE + 0)
+#define IRQ2_USB1	(IRQ1_BASE + 1)
+#define IRQ2_MASK	0x0003
+#define IRQ2_END	IRQ2_USB1
+
+#define SE7724_FPGA_IRQ_NR	(IRQ2_END - IRQ0_BASE)
+
+/* arch/sh/boards/se/7724/irq.c */
+void init_se7724_IRQ(void);
+
+#define __IO_PREFIX		se7724
+#include <asm/io_generic.h>
+
+#endif  /* __ASM_SH_SE7724_H */