mach-n30.c

/* linux/arch/arm/mach-s3c2410/mach-n30.c
 *
 * Copyright (c) 2003-2005 Simtec Electronics
 *	Ben Dooks <ben@simtec.co.uk>
 *
 * Copyright (c) 2005 Christer Weinigel <christer@weinigel.se>
 *
 * There is a wiki with more information about the n30 port at
 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
 *
 * 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/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/kthread.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <asm/hardware.h>
#include <asm/hardware/iomd.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach-types.h>

#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/iic.h>

#include <linux/serial_core.h>

#include "s3c2410.h"
#include "clock.h"
#include "devs.h"
#include "cpu.h"

static struct map_desc n30_iodesc[] __initdata = {
	/* nothing here yet */
};

static struct s3c2410_uartcfg n30_uartcfgs[] = {
	/* Normal serial port */
	[0] = {
		.hwport	     = 0,
		.flags	     = 0,
		.ucon	     = 0x2c5,
		.ulcon	     = 0x03,
		.ufcon	     = 0x51,
	},
	/* IR port */
	[1] = {
		.hwport	     = 1,
		.flags	     = 0,
		.uart_flags  = UPF_CONS_FLOW,
		.ucon	     = 0x2c5,
		.ulcon	     = 0x43,
		.ufcon	     = 0x51,
	},
	/* The BlueTooth controller is connected to port 2 */
	[2] = {
		.hwport	     = 2,
		.flags	     = 0,
		.ucon	     = 0x2c5,
		.ulcon	     = 0x03,
		.ufcon	     = 0x51,
	},
};

static struct platform_device *n30_devices[] __initdata = {
	&s3c_device_usb,
	&s3c_device_lcd,
	&s3c_device_wdt,
	&s3c_device_i2c,
	&s3c_device_iis,
	&s3c_device_usbgadget,
};

static struct s3c2410_platform_i2c n30_i2ccfg = {
	.flags		= 0,
	.slave_addr	= 0x10,
	.bus_freq	= 10*1000,
	.max_freq	= 10*1000,
};

static struct s3c24xx_board n30_board __initdata = {
	.devices       = n30_devices,
	.devices_count = ARRAY_SIZE(n30_devices)
};

void __init n30_map_io(void)
{
	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
	s3c24xx_init_clocks(0);
	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
	s3c24xx_set_board(&n30_board);
}

void __init n30_init_irq(void)
{
	s3c24xx_init_irq();
}


static int n30_usbstart_thread(void *unused)
{
	/* Turn off suspend on both USB ports, and switch the
	 * selectable USB port to USB device mode. */
	writel(readl(S3C2410_MISCCR) & ~0x00003008, S3C2410_MISCCR);

	/* Turn off the D+ pull up for 3 seconds so that the USB host
	 * at the other end will do a rescan of the USB bus.  */
	s3c2410_gpio_setpin(S3C2410_GPB3, 0);

	msleep_interruptible(3*HZ);

	s3c2410_gpio_setpin(S3C2410_GPB3, 1);

	return 0;
}


void __init n30_init(void)
{
	s3c_device_i2c.dev.platform_data = &n30_i2ccfg;

	kthread_run(n30_usbstart_thread, NULL, "n30_usbstart");
}

MACHINE_START(N30, "Acer-N30")
	/* Maintainer: Christer Weinigel <christer@weinigel.se>, Ben Dooks <ben-linux@fluff.org> */
	.phys_ram	= S3C2410_SDRAM_PA,
	.phys_io	= S3C2410_PA_UART,
	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
	.boot_params	= S3C2410_SDRAM_PA + 0x100,
	.timer		= &s3c24xx_timer,
	.init_machine	= n30_init,
	.init_irq	= n30_init_irq,
	.map_io		= n30_map_io,
MACHINE_END

/*
    Local variables:
        compile-command: "make ARCH=arm CROSS_COMPILE=/usr/local/arm/3.3.2/bin/arm-linux- -k -C ../../.."
        c-basic-offset: 8
    End:
*/