/arch/arm/mach-s3c2410/mach-n30.c

  1/* linux/arch/arm/mach-s3c2410/mach-n30.c
  2 *
  3 * Copyright (c) 2003-2005 Simtec Electronics
  4 *	Ben Dooks <ben@simtec.co.uk>
  5 *
  6 * Copyright (c) 2005 Christer Weinigel <christer@weinigel.se>
  7 *
  8 * There is a wiki with more information about the n30 port at
  9 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
 10 *
 11 * This program is free software; you can redistribute it and/or modify
 12 * it under the terms of the GNU General Public License version 2 as
 13 * published by the Free Software Foundation.
 14*/
 15
 16#include <linux/kernel.h>
 17#include <linux/types.h>
 18#include <linux/interrupt.h>
 19#include <linux/list.h>
 20#include <linux/timer.h>
 21#include <linux/init.h>
 22#include <linux/delay.h>
 23#include <linux/device.h>
 24#include <linux/kthread.h>
 25
 26#include <asm/mach/arch.h>
 27#include <asm/mach/map.h>
 28#include <asm/mach/irq.h>
 29
 30#include <asm/hardware.h>
 31#include <asm/hardware/iomd.h>
 32#include <asm/io.h>
 33#include <asm/irq.h>
 34#include <asm/mach-types.h>
 35
 36#include <asm/arch/regs-serial.h>
 37#include <asm/arch/regs-gpio.h>
 38#include <asm/arch/iic.h>
 39
 40#include <linux/serial_core.h>
 41
 42#include "s3c2410.h"
 43#include "clock.h"
 44#include "devs.h"
 45#include "cpu.h"
 46
 47static struct map_desc n30_iodesc[] __initdata = {
 48	/* nothing here yet */
 49};
 50
 51static struct s3c2410_uartcfg n30_uartcfgs[] = {
 52	/* Normal serial port */
 53	[0] = {
 54		.hwport	     = 0,
 55		.flags	     = 0,
 56		.ucon	     = 0x2c5,
 57		.ulcon	     = 0x03,
 58		.ufcon	     = 0x51,
 59	},
 60	/* IR port */
 61	[1] = {
 62		.hwport	     = 1,
 63		.flags	     = 0,
 64		.uart_flags  = UPF_CONS_FLOW,
 65		.ucon	     = 0x2c5,
 66		.ulcon	     = 0x43,
 67		.ufcon	     = 0x51,
 68	},
 69	/* The BlueTooth controller is connected to port 2 */
 70	[2] = {
 71		.hwport	     = 2,
 72		.flags	     = 0,
 73		.ucon	     = 0x2c5,
 74		.ulcon	     = 0x03,
 75		.ufcon	     = 0x51,
 76	},
 77};
 78
 79static struct platform_device *n30_devices[] __initdata = {
 80	&s3c_device_usb,
 81	&s3c_device_lcd,
 82	&s3c_device_wdt,
 83	&s3c_device_i2c,
 84	&s3c_device_iis,
 85	&s3c_device_usbgadget,
 86};
 87
 88static struct s3c2410_platform_i2c n30_i2ccfg = {
 89	.flags		= 0,
 90	.slave_addr	= 0x10,
 91	.bus_freq	= 10*1000,
 92	.max_freq	= 10*1000,
 93};
 94
 95static struct s3c24xx_board n30_board __initdata = {
 96	.devices       = n30_devices,
 97	.devices_count = ARRAY_SIZE(n30_devices)
 98};
 99
100void __init n30_map_io(void)
101{
102	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
103	s3c24xx_init_clocks(0);
104	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
105	s3c24xx_set_board(&n30_board);
106}
107
108void __init n30_init_irq(void)
109{
110	s3c24xx_init_irq();
111}
112
113
114static int n30_usbstart_thread(void *unused)
115{
116	/* Turn off suspend on both USB ports, and switch the
117	 * selectable USB port to USB device mode. */
118	writel(readl(S3C2410_MISCCR) & ~0x00003008, S3C2410_MISCCR);
119
120	/* Turn off the D+ pull up for 3 seconds so that the USB host
121	 * at the other end will do a rescan of the USB bus.  */
122	s3c2410_gpio_setpin(S3C2410_GPB3, 0);
123
124	msleep_interruptible(3*HZ);
125
126	s3c2410_gpio_setpin(S3C2410_GPB3, 1);
127
128	return 0;
129}
130
131
132void __init n30_init(void)
133{
134	s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
135
136	kthread_run(n30_usbstart_thread, NULL, "n30_usbstart");
137}
138
139MACHINE_START(N30, "Acer-N30")
140     MAINTAINER("Christer Weinigel <christer@weinigel.se>, Ben Dooks <ben-linux@fluff.org>")
141     BOOT_MEM(S3C2410_SDRAM_PA, S3C2410_PA_UART, (u32)S3C24XX_VA_UART)
142     BOOT_PARAMS(S3C2410_SDRAM_PA + 0x100)
143
144	.timer		= &s3c24xx_timer,
145	.init_machine	= n30_init,
146	.init_irq	= n30_init_irq,
147	.map_io		= n30_map_io,
148MACHINE_END
149
150/*
151    Local variables:
152        compile-command: "make ARCH=arm CROSS_COMPILE=/usr/local/arm/3.3.2/bin/arm-linux- -k -C ../../.."
153        c-basic-offset: 8
154    End:
155*/