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/gpio_keys.h>
  21 #include <linux/init.h>
  22 #include <linux/input.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/serial_core.h>
  26 #include <linux/timer.h>
  27
  28 #include <asm/hardware.h>
  29 #include <asm/io.h>
  30 #include <asm/irq.h>
  31 #include <asm/mach-types.h>
  32
  33 #include <asm/arch/regs-gpio.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/irq.h>
  37 #include <asm/mach/map.h>
  38
  39 #include <asm/plat-s3c/iic.h>
  40 #include <asm/plat-s3c/regs-serial.h>
  41
  42 #include <asm/plat-s3c24xx/clock.h>
  43 #include <asm/plat-s3c24xx/cpu.h>
  44 #include <asm/plat-s3c24xx/devs.h>
  45 #include <asm/plat-s3c24xx/s3c2410.h>
  46 #include <asm/plat-s3c24xx/udc.h>
  47
  48 static struct map_desc n30_iodesc[] __initdata = {
  49         /* nothing here yet */
  50 };
  51
  52 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  53         /* Normal serial port */
  54         [0] = {
  55                 .hwport      = 0,
  56                 .flags       = 0,
  57                 .ucon        = 0x2c5,
  58                 .ulcon       = 0x03,
  59                 .ufcon       = 0x51,
  60         },
  61         /* IR port */
  62         [1] = {
  63                 .hwport      = 1,
  64                 .flags       = 0,
  65                 .uart_flags  = UPF_CONS_FLOW,
  66                 .ucon        = 0x2c5,
  67                 .ulcon       = 0x43,
  68                 .ufcon       = 0x51,
  69         },
  70         /* The BlueTooth controller is connected to port 2 */
  71         [2] = {
  72                 .hwport      = 2,
  73                 .flags       = 0,
  74                 .ucon        = 0x2c5,
  75                 .ulcon       = 0x03,
  76                 .ufcon       = 0x51,
  77         },
  78 };
  79
  80 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
  81 {
  82         switch (cmd)
  83         {
  84                 case S3C2410_UDC_P_ENABLE :
  85                         s3c2410_gpio_setpin(S3C2410_GPB3, 1);
  86                         break;
  87                 case S3C2410_UDC_P_DISABLE :
  88                         s3c2410_gpio_setpin(S3C2410_GPB3, 0);
  89                         break;
  90                 case S3C2410_UDC_P_RESET :
  91                         break;
  92                 default:
  93                         break;
  94         }
  95 }
  96
  97 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  98         .udc_command            = n30_udc_pullup,
  99         .vbus_pin               = S3C2410_GPG1,
 100         .vbus_pin_inverted      = 0,
 101 };
 102
 103 static struct gpio_keys_button n30_buttons[] = {
 104         {
 105                 .gpio           = S3C2410_GPF0,
 106                 .code           = KEY_POWER,
 107                 .desc           = "Power",
 108                 .active_low     = 0,
 109         },
 110         {
 111                 .gpio           = S3C2410_GPG9,
 112                 .code           = KEY_UP,
 113                 .desc           = "Thumbwheel Up",
 114                 .active_low     = 0,
 115         },
 116         {
 117                 .gpio           = S3C2410_GPG8,
 118                 .code           = KEY_DOWN,
 119                 .desc           = "Thumbwheel Down",
 120                 .active_low     = 0,
 121         },
 122         {
 123                 .gpio           = S3C2410_GPG7,
 124                 .code           = KEY_ENTER,
 125                 .desc           = "Thumbwheel Press",
 126                 .active_low     = 0,
 127         },
 128         {
 129                 .gpio           = S3C2410_GPF7,
 130                 .code           = KEY_HOMEPAGE,
 131                 .desc           = "Home",
 132                 .active_low     = 0,
 133         },
 134         {
 135                 .gpio           = S3C2410_GPF6,
 136                 .code           = KEY_CALENDAR,
 137                 .desc           = "Calendar",
 138                 .active_low     = 0,
 139         },
 140         {
 141                 .gpio           = S3C2410_GPF5,
 142                 .code           = KEY_ADDRESSBOOK,
 143                 .desc           = "Contacts",
 144                 .active_low     = 0,
 145         },
 146         {
 147                 .gpio           = S3C2410_GPF4,
 148                 .code           = KEY_MAIL,
 149                 .desc           = "Mail",
 150                 .active_low     = 0,
 151         },
 152 };
 153
 154 static struct gpio_keys_platform_data n30_button_data = {
 155         .buttons        = n30_buttons,
 156         .nbuttons       = ARRAY_SIZE(n30_buttons),
 157 };
 158
 159 static struct platform_device n30_button_device = {
 160         .name           = "gpio-keys",
 161         .id             = -1,
 162         .dev            = {
 163                 .platform_data  = &n30_button_data,
 164         }
 165 };
 166
 167 static struct platform_device *n30_devices[] __initdata = {
 168         &s3c_device_lcd,
 169         &s3c_device_wdt,
 170         &s3c_device_i2c,
 171         &s3c_device_iis,
 172         &s3c_device_usb,
 173         &s3c_device_usbgadget,
 174         &n30_button_device,
 175 };
 176
 177 static struct s3c2410_platform_i2c n30_i2ccfg = {
 178         .flags          = 0,
 179         .slave_addr     = 0x10,
 180         .bus_freq       = 10*1000,
 181         .max_freq       = 10*1000,
 182 };
 183
 184 static void __init n30_map_io(void)
 185 {
 186         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 187         s3c24xx_init_clocks(0);
 188         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 189 }
 190
 191 static void __init n30_init_irq(void)
 192 {
 193         s3c24xx_init_irq();
 194 }
 195
 196 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 197
 198 static void __init n30_init(void)
 199 {
 200         s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
 201         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 202
 203         /* Turn off suspend on both USB ports, and switch the
 204          * selectable USB port to USB device mode. */
 205
 206         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 207                               S3C2410_MISCCR_USBSUSPND0 |
 208                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 209
 210         platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 211 }
 212
 213 MACHINE_START(N30, "Acer-N30")
 214         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 215                                 Ben Dooks <ben-linux@fluff.org>
 216         */
 217         .phys_io        = S3C2410_PA_UART,
 218         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 219         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 220         .timer          = &s3c24xx_timer,
 221         .init_machine   = n30_init,
 222         .init_irq       = n30_init_irq,
 223         .map_io         = n30_map_io,
 224 MACHINE_END