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/leds-gpio.h>
  34 #include <asm/arch/regs-gpio.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/irq.h>
  38 #include <asm/mach/map.h>
  39
  40 #include <asm/plat-s3c/iic.h>
  41 #include <asm/plat-s3c/regs-serial.h>
  42
  43 #include <asm/plat-s3c24xx/clock.h>
  44 #include <asm/plat-s3c24xx/cpu.h>
  45 #include <asm/plat-s3c24xx/devs.h>
  46 #include <asm/plat-s3c24xx/s3c2410.h>
  47 #include <asm/plat-s3c24xx/udc.h>
  48
  49 static struct map_desc n30_iodesc[] __initdata = {
  50         /* nothing here yet */
  51 };
  52
  53 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  54         /* Normal serial port */
  55         [0] = {
  56                 .hwport      = 0,
  57                 .flags       = 0,
  58                 .ucon        = 0x2c5,
  59                 .ulcon       = 0x03,
  60                 .ufcon       = 0x51,
  61         },
  62         /* IR port */
  63         [1] = {
  64                 .hwport      = 1,
  65                 .flags       = 0,
  66                 .uart_flags  = UPF_CONS_FLOW,
  67                 .ucon        = 0x2c5,
  68                 .ulcon       = 0x43,
  69                 .ufcon       = 0x51,
  70         },
  71         /* The BlueTooth controller is connected to port 2 */
  72         [2] = {
  73                 .hwport      = 2,
  74                 .flags       = 0,
  75                 .ucon        = 0x2c5,
  76                 .ulcon       = 0x03,
  77                 .ufcon       = 0x51,
  78         },
  79 };
  80
  81 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
  82 {
  83         switch (cmd)
  84         {
  85                 case S3C2410_UDC_P_ENABLE :
  86                         s3c2410_gpio_setpin(S3C2410_GPB3, 1);
  87                         break;
  88                 case S3C2410_UDC_P_DISABLE :
  89                         s3c2410_gpio_setpin(S3C2410_GPB3, 0);
  90                         break;
  91                 case S3C2410_UDC_P_RESET :
  92                         break;
  93                 default:
  94                         break;
  95         }
  96 }
  97
  98 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  99         .udc_command            = n30_udc_pullup,
 100         .vbus_pin               = S3C2410_GPG1,
 101         .vbus_pin_inverted      = 0,
 102 };
 103
 104 static struct gpio_keys_button n30_buttons[] = {
 105         {
 106                 .gpio           = S3C2410_GPF0,
 107                 .code           = KEY_POWER,
 108                 .desc           = "Power",
 109                 .active_low     = 0,
 110         },
 111         {
 112                 .gpio           = S3C2410_GPG9,
 113                 .code           = KEY_UP,
 114                 .desc           = "Thumbwheel Up",
 115                 .active_low     = 0,
 116         },
 117         {
 118                 .gpio           = S3C2410_GPG8,
 119                 .code           = KEY_DOWN,
 120                 .desc           = "Thumbwheel Down",
 121                 .active_low     = 0,
 122         },
 123         {
 124                 .gpio           = S3C2410_GPG7,
 125                 .code           = KEY_ENTER,
 126                 .desc           = "Thumbwheel Press",
 127                 .active_low     = 0,
 128         },
 129         {
 130                 .gpio           = S3C2410_GPF7,
 131                 .code           = KEY_HOMEPAGE,
 132                 .desc           = "Home",
 133                 .active_low     = 0,
 134         },
 135         {
 136                 .gpio           = S3C2410_GPF6,
 137                 .code           = KEY_CALENDAR,
 138                 .desc           = "Calendar",
 139                 .active_low     = 0,
 140         },
 141         {
 142                 .gpio           = S3C2410_GPF5,
 143                 .code           = KEY_ADDRESSBOOK,
 144                 .desc           = "Contacts",
 145                 .active_low     = 0,
 146         },
 147         {
 148                 .gpio           = S3C2410_GPF4,
 149                 .code           = KEY_MAIL,
 150                 .desc           = "Mail",
 151                 .active_low     = 0,
 152         },
 153 };
 154
 155 static struct gpio_keys_platform_data n30_button_data = {
 156         .buttons        = n30_buttons,
 157         .nbuttons       = ARRAY_SIZE(n30_buttons),
 158 };
 159
 160 static struct platform_device n30_button_device = {
 161         .name           = "gpio-keys",
 162         .id             = -1,
 163         .dev            = {
 164                 .platform_data  = &n30_button_data,
 165         }
 166 };
 167
 168 /* This is the bluetooth LED on the device. */
 169 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 170         .name           = "blue_led",
 171         .gpio           = S3C2410_GPG6,
 172         .def_trigger    = "",
 173 };
 174
 175 /* This LED is driven by the battery microcontroller, and is blinking
 176  * red, blinking green or solid green when the battery is low,
 177  * charging or full respectively.  By driving GPD9 low, it's possible
 178  * to force the LED to blink red, so call that warning LED.  */
 179 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 180         .name           = "warning_led",
 181         .flags          = S3C24XX_LEDF_ACTLOW,
 182         .gpio           = S3C2410_GPD9,
 183         .def_trigger    = "",
 184 };
 185
 186 static struct platform_device n30_blue_led = {
 187         .name           = "s3c24xx_led",
 188         .id             = 1,
 189         .dev            = {
 190                 .platform_data  = &n30_blue_led_pdata,
 191         },
 192 };
 193
 194 static struct platform_device n30_warning_led = {
 195         .name           = "s3c24xx_led",
 196         .id             = 2,
 197         .dev            = {
 198                 .platform_data  = &n30_warning_led_pdata,
 199         },
 200 };
 201
 202 static struct platform_device *n30_devices[] __initdata = {
 203         &s3c_device_lcd,
 204         &s3c_device_wdt,
 205         &s3c_device_i2c,
 206         &s3c_device_iis,
 207         &s3c_device_usb,
 208         &s3c_device_usbgadget,
 209         &n30_button_device,
 210         &n30_blue_led,
 211         &n30_warning_led,
 212 };
 213
 214 static struct s3c2410_platform_i2c n30_i2ccfg = {
 215         .flags          = 0,
 216         .slave_addr     = 0x10,
 217         .bus_freq       = 10*1000,
 218         .max_freq       = 10*1000,
 219 };
 220
 221 static void __init n30_map_io(void)
 222 {
 223         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 224         s3c24xx_init_clocks(0);
 225         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 226 }
 227
 228 static void __init n30_init_irq(void)
 229 {
 230         s3c24xx_init_irq();
 231 }
 232
 233 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 234
 235 static void __init n30_init(void)
 236 {
 237         s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
 238         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 239
 240         /* Turn off suspend on both USB ports, and switch the
 241          * selectable USB port to USB device mode. */
 242
 243         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 244                               S3C2410_MISCCR_USBSUSPND0 |
 245                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 246
 247         platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 248 }
 249
 250 MACHINE_START(N30, "Acer-N30")
 251         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 252                                 Ben Dooks <ben-linux@fluff.org>
 253         */
 254         .phys_io        = S3C2410_PA_UART,
 255         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 256         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 257         .timer          = &s3c24xx_timer,
 258         .init_machine   = n30_init,
 259         .init_irq       = n30_init_irq,
 260         .map_io         = n30_map_io,
 261 MACHINE_END