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

   1 /* Machine specific code for the Acer n30 PDA.
   2  *
   3  * Copyright (c) 2003-2005 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * Copyright (c) 2005-2008 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
  19 #include <linux/delay.h>
  20 #include <linux/init.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/serial_core.h>
  24 #include <linux/timer.h>
  25
  26 #include <asm/hardware.h>
  27 #include <asm/io.h>
  28 #include <asm/irq.h>
  29 #include <asm/mach-types.h>
  30
  31 #include <asm/arch/regs-gpio.h>
  32
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/irq.h>
  35 #include <asm/mach/map.h>
  36
  37 #include <asm/plat-s3c/iic.h>
  38 #include <asm/plat-s3c/regs-serial.h>
  39
  40 #include <asm/plat-s3c24xx/clock.h>
  41 #include <asm/plat-s3c24xx/cpu.h>
  42 #include <asm/plat-s3c24xx/devs.h>
  43 #include <asm/plat-s3c24xx/s3c2410.h>
  44 #include <asm/plat-s3c24xx/udc.h>
  45
  46 static struct map_desc n30_iodesc[] __initdata = {
  47         /* nothing here yet */
  48 };
  49
  50 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  51         /* Normal serial port */
  52         [0] = {
  53                 .hwport      = 0,
  54                 .flags       = 0,
  55                 .ucon        = 0x2c5,
  56                 .ulcon       = 0x03,
  57                 .ufcon       = 0x51,
  58         },
  59         /* IR port */
  60         [1] = {
  61                 .hwport      = 1,
  62                 .flags       = 0,
  63                 .uart_flags  = UPF_CONS_FLOW,
  64                 .ucon        = 0x2c5,
  65                 .ulcon       = 0x43,
  66                 .ufcon       = 0x51,
  67         },
  68         /* The BlueTooth controller is connected to port 2 */
  69         [2] = {
  70                 .hwport      = 2,
  71                 .flags       = 0,
  72                 .ucon        = 0x2c5,
  73                 .ulcon       = 0x03,
  74                 .ufcon       = 0x51,
  75         },
  76 };
  77
  78 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
  79 {
  80         switch (cmd)
  81         {
  82                 case S3C2410_UDC_P_ENABLE :
  83                         s3c2410_gpio_setpin(S3C2410_GPB3, 1);
  84                         break;
  85                 case S3C2410_UDC_P_DISABLE :
  86                         s3c2410_gpio_setpin(S3C2410_GPB3, 0);
  87                         break;
  88                 case S3C2410_UDC_P_RESET :
  89                         break;
  90                 default:
  91                         break;
  92         }
  93 }
  94
  95 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  96         .udc_command            = n30_udc_pullup,
  97         .vbus_pin               = S3C2410_GPG1,
  98         .vbus_pin_inverted      = 0,
  99 };
 100
 101 static struct platform_device *n30_devices[] __initdata = {
 102         &s3c_device_lcd,
 103         &s3c_device_wdt,
 104         &s3c_device_i2c,
 105         &s3c_device_iis,
 106         &s3c_device_usb,
 107         &s3c_device_usbgadget,
 108 };
 109
 110 static struct s3c2410_platform_i2c n30_i2ccfg = {
 111         .flags          = 0,
 112         .slave_addr     = 0x10,
 113         .bus_freq       = 10*1000,
 114         .max_freq       = 10*1000,
 115 };
 116
 117 static void __init n30_map_io(void)
 118 {
 119         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 120         s3c24xx_init_clocks(0);
 121         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 122 }
 123
 124 static void __init n30_init_irq(void)
 125 {
 126         s3c24xx_init_irq();
 127 }
 128
 129 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 130
 131 static void __init n30_init(void)
 132 {
 133         s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
 134         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 135
 136         /* Turn off suspend on both USB ports, and switch the
 137          * selectable USB port to USB device mode. */
 138
 139         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 140                               S3C2410_MISCCR_USBSUSPND0 |
 141                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 142
 143         platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 144 }
 145
 146 MACHINE_START(N30, "Acer-N30")
 147         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 148                                 Ben Dooks <ben-linux@fluff.org>
 149         */
 150         .phys_io        = S3C2410_PA_UART,
 151         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 152         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 153         .timer          = &s3c24xx_timer,
 154         .init_machine   = n30_init,
 155         .init_irq       = n30_init_irq,
 156         .map_io         = n30_map_io,
 157 MACHINE_END