Add Merisc board support

Merisc is the family name for a range of AVR32-based boards.

The boards are designed to be used in a man-machine interfacing
environment, utilizing a touch-based graphical user interface. They host
a vast range of I/O peripherals as well as a large SDRAM & Flash memory
bank.

For more information see: http://www.martinsson.se/merisc

Signed-off-by: Jonas Larsson <jonas.larsson@martinsson.se>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/Kconfig

@@ -144,6 +144,19 @@ config BOARD_FAVR_32
 	bool "Favr-32 LCD-board"
 	select CPU_AT32AP7000
 
+config BOARD_MERISC
+	bool "Merisc board"
+	select CPU_AT32AP7000
+	help
+	  Merisc is the family name for a range of AVR32-based boards.
+
+	  The boards are designed to be used in a man-machine
+	  interfacing environment, utilizing a touch-based graphical
+	  user interface. They host a vast range of I/O peripherals as
+	  well as a large SDRAM & Flash memory bank.
+
+	  For more information see: http://www.martinsson.se/merisc
+
 config BOARD_MIMC200
 	bool "MIMC200 CPU board"
 	select CPU_AT32AP7000
@@ -153,6 +166,7 @@ source "arch/avr32/boards/atstk1000/Kconfig"
 source "arch/avr32/boards/atngw100/Kconfig"
 source "arch/avr32/boards/hammerhead/Kconfig"
 source "arch/avr32/boards/favr-32/Kconfig"
+source "arch/avr32/boards/merisc/Kconfig"
 
 choice
 	prompt "Boot loader type"

arch/avr32/Makefile

@@ -35,6 +35,7 @@ core-$(CONFIG_BOARD_ATSTK1000)		+= arch/avr32/boards/atstk1000/
 core-$(CONFIG_BOARD_ATNGW100)		+= arch/avr32/boards/atngw100/
 core-$(CONFIG_BOARD_HAMMERHEAD)		+= arch/avr32/boards/hammerhead/
 core-$(CONFIG_BOARD_FAVR_32)		+= arch/avr32/boards/favr-32/
+core-$(CONFIG_BOARD_MERISC)		+= arch/avr32/boards/merisc/
 core-$(CONFIG_BOARD_MIMC200)		+= arch/avr32/boards/mimc200/
 core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/
 core-y					+= arch/avr32/kernel/

arch/avr32/boards/merisc/Kconfig

@@ -0,0 +1,5 @@
+# Merisc customization
+
+if BOARD_MERISC
+
+endif	# BOARD_MERISC

arch/avr32/boards/merisc/Makefile

@@ -0,0 +1 @@
+obj-y					+= setup.o flash.o display.o merisc_sysfs.o

arch/avr32/boards/merisc/display.c

@@ -0,0 +1,65 @@
+/*
+ * Display setup code for the Merisc board
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <video/atmel_lcdc.h>
+#include <asm/setup.h>
+#include <mach/board.h>
+#include "merisc.h"
+
+static struct fb_videomode merisc_fb_videomode[] = {
+	{
+		.refresh	= 44,
+		.xres		= 640,
+		.yres		= 480,
+		.left_margin	= 96,
+		.right_margin	= 96,
+		.upper_margin	= 34,
+		.lower_margin	= 8,
+		.hsync_len	= 64,
+		.vsync_len	= 64,
+		.name		= "640x480 @ 44",
+		.pixclock	= KHZ2PICOS(25180),
+		.sync		= 0,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs merisc_fb_monspecs = {
+	.manufacturer	= "Kyo",
+	.monitor	= "TCG075VG2AD",
+	.modedb		= merisc_fb_videomode,
+	.modedb_len	= ARRAY_SIZE(merisc_fb_videomode),
+	.hfmin		= 30000,
+	.hfmax		= 33333,
+	.vfmin		= 60,
+	.vfmax		= 90,
+	.dclkmax	= 30000000,
+};
+
+struct atmel_lcdfb_info merisc_lcdc_data = {
+	.default_bpp		= 24,
+	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
+				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+				   | ATMEL_LCDC_MEMOR_BIG),
+	.default_monspecs	= &merisc_fb_monspecs,
+	.guard_time		= 2,
+};
+
+static int __init merisc_display_init(void)
+{
+	at32_add_device_lcdc(0, &merisc_lcdc_data, fbmem_start,
+			     fbmem_size, 0);
+
+	return 0;
+}
+device_initcall(merisc_display_init);

arch/avr32/boards/merisc/flash.c

@@ -0,0 +1,139 @@
+/*
+ * Merisc board-specific flash initialization
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <mach/smc.h>
+
+/* Will be translated to units of 14.3 ns, rounded up */
+static struct smc_timing flash_timing __initdata = {
+	.ncs_read_setup		= 1 * 14,
+	.nrd_setup		= 5 * 14,
+	.ncs_write_setup	= 1 * 14,
+	.nwe_setup		= 2 * 14,
+
+	.ncs_read_pulse		= 12 * 14,
+	.nrd_pulse		= 7 * 14,
+	.ncs_write_pulse	= 8 * 14,
+	.nwe_pulse		= 4 * 14,
+
+	.read_cycle		= 14 * 14,
+	.write_cycle		= 10 * 14,
+};
+
+static struct smc_config flash_config __initdata = {
+	.bus_width	= 2,
+	.nrd_controlled	= 1,
+	.nwe_controlled	= 1,
+	.byte_write	= 1,
+	.tdf_cycles	= 3,
+};
+
+static struct mtd_partition flash_0_parts[] = {
+	{
+		.name		= "boot",
+		.offset		= 0x00000000,
+		.size		= 0x00060000,
+		.mask_flags	= 0,
+	},
+	{
+		.name		= "kernel",
+		.offset		= 0x00060000,
+		.size		= 0x00200000,
+		.mask_flags	= 0,
+	},
+	{
+		.name		= "root",
+		.offset		= 0x00260000,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0,
+	},
+};
+
+static struct mtd_partition flash_1_parts[] = {
+	{
+		.name		= "2ndflash",
+		.offset		= 0x00000000,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0,
+	},
+};
+
+static struct physmap_flash_data flash_data[] = {
+	{
+		.width		= 2,
+		.nr_parts	= ARRAY_SIZE(flash_0_parts),
+		.parts		= flash_0_parts,
+	},
+	{
+		.width		= 2,
+		.nr_parts	= ARRAY_SIZE(flash_1_parts),
+		.parts		= flash_1_parts,
+	}
+};
+
+static struct resource flash_resource[] = {
+	{
+		.start		= 0x00000000,
+		.end		= 0x03ffffff,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= 0x04000000,
+		.end		= 0x07ffffff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device flash_device[] = {
+	{
+		.name		= "physmap-flash",
+		.id		= 0,
+		.resource	= &flash_resource[0],
+		.num_resources	= 1,
+		.dev		= {
+			.platform_data	= &flash_data[0],
+		},
+	},
+	{
+		.name		= "physmap-flash",
+		.id		= 1,
+		.resource	= &flash_resource[1],
+		.num_resources	= 1,
+		.dev		= {
+			.platform_data	= &flash_data[1],
+		},
+	},
+};
+
+static int __init merisc_flash_init(void)
+{
+	int ret;
+	smc_set_timing(&flash_config, &flash_timing);
+
+	ret = smc_set_configuration(0, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "Merisc: failed to set NOR flash timing #0\n");
+		return ret;
+	}
+
+	ret = smc_set_configuration(4, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "Merisc: failed to set NOR flash timing #1\n");
+		return ret;
+	}
+
+	platform_device_register(&flash_device[0]);
+	platform_device_register(&flash_device[1]);
+	return 0;
+}
+device_initcall(merisc_flash_init);

arch/avr32/boards/merisc/merisc.h

@@ -0,0 +1,18 @@
+/*
+ * Merisc exports
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ARCH_AVR32_BOARDS_MERISC_MERISC_H
+#define __ARCH_AVR32_BOARDS_MERISC_MERISC_H
+
+const char *merisc_revision(void);
+const char *merisc_model(void);
+
+extern struct class merisc_class;
+
+#endif /* __ARCH_AVR32_BOARDS_MERISC_MERISC_H */

arch/avr32/boards/merisc/merisc_sysfs.c

@@ -0,0 +1,65 @@
+/*
+ * Merisc sysfs exports
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/timer.h>
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include "merisc.h"
+
+static ssize_t merisc_model_show(struct class *class, char *buf)
+{
+	ssize_t ret = 0;
+
+	sprintf(buf, "%s\n", merisc_model());
+	ret = strlen(buf) + 1;
+
+	return ret;
+}
+
+static ssize_t merisc_revision_show(struct class *class, char *buf)
+{
+	ssize_t ret = 0;
+
+	sprintf(buf, "%s\n", merisc_revision());
+	ret = strlen(buf) + 1;
+
+	return ret;
+}
+
+static struct class_attribute merisc_class_attrs[] = {
+	__ATTR(model, S_IRUGO, merisc_model_show, NULL),
+	__ATTR(revision, S_IRUGO, merisc_revision_show, NULL),
+	__ATTR_NULL,
+};
+
+struct class merisc_class = {
+	.name =		"merisc",
+	.owner =	THIS_MODULE,
+	.class_attrs =	merisc_class_attrs,
+};
+
+static int __init merisc_sysfs_init(void)
+{
+	int status;
+
+	status = class_register(&merisc_class);
+	if (status < 0)
+		return status;
+
+	return 0;
+}
+
+postcore_initcall(merisc_sysfs_init);