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
  47 static struct map_desc n30_iodesc[] __initdata = {
  48         /* nothing here yet */
  49 };
  50
  51 static 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
  79 static 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
  88 static 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
  95 static struct s3c24xx_board n30_board __initdata = {
  96         .devices       = n30_devices,
  97         .devices_count = ARRAY_SIZE(n30_devices)
  98 };
  99
 100 void __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
 108 void __init n30_init_irq(void)
 109 {
 110         s3c24xx_init_irq();
 111 }
 112
 113
 114 static 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
 132 void __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
 139 MACHINE_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,
 148 MACHINE_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 */