err.no Git - linux-2.6/blob - arch/arm/mach-ixp4xx/nslu2-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/nslu2-setup.c
   3  *
   4  * NSLU2 board-setup
   5  *
   6  * based ixdp425-setup.c:
   7  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
   8  *
   9  * Author: Mark Rakes <mrakes at mac.com>
  10  * Author: Rod Whitby <rod@whitby.id.au>
  11  * Maintainers: http://www.nslu2-linux.org/
  12  *
  13  * Fixed missing init_time in MACHINE_START kas11 10/22/04
  14  * Changed to conform to new style __init ixdp425 kas11 10/22/04
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/serial.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/leds.h>
  21 #include <linux/i2c.h>
  22 #include <linux/i2c-gpio.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/flash.h>
  27 #include <asm/mach/time.h>
  28
  29 static struct flash_platform_data nslu2_flash_data = {
  30         .map_name               = "cfi_probe",
  31         .width                  = 2,
  32 };
  33
  34 static struct resource nslu2_flash_resource = {
  35         .flags                  = IORESOURCE_MEM,
  36 };
  37
  38 static struct platform_device nslu2_flash = {
  39         .name                   = "IXP4XX-Flash",
  40         .id                     = 0,
  41         .dev.platform_data      = &nslu2_flash_data,
  42         .num_resources          = 1,
  43         .resource               = &nslu2_flash_resource,
  44 };
  45
  46 static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
  47         .sda_pin                = NSLU2_SDA_PIN,
  48         .scl_pin                = NSLU2_SCL_PIN,
  49 };
  50
  51 static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
  52         {
  53                 I2C_BOARD_INFO("rtc-x1205", 0x6f),
  54         },
  55 };
  56
  57 #ifdef CONFIG_LEDS_IXP4XX
  58 static struct resource nslu2_led_resources[] = {
  59         {
  60                 .name           = "ready",  /* green led */
  61                 .start          = NSLU2_LED_GRN_GPIO,
  62                 .end            = NSLU2_LED_GRN_GPIO,
  63                 .flags          = IXP4XX_GPIO_HIGH,
  64         },
  65         {
  66                 .name           = "status", /* red led */
  67                 .start          = NSLU2_LED_RED_GPIO,
  68                 .end            = NSLU2_LED_RED_GPIO,
  69                 .flags          = IXP4XX_GPIO_HIGH,
  70         },
  71         {
  72                 .name           = "disk-1",
  73                 .start          = NSLU2_LED_DISK1_GPIO,
  74                 .end            = NSLU2_LED_DISK1_GPIO,
  75                 .flags          = IXP4XX_GPIO_LOW,
  76         },
  77         {
  78                 .name           = "disk-2",
  79                 .start          = NSLU2_LED_DISK2_GPIO,
  80                 .end            = NSLU2_LED_DISK2_GPIO,
  81                 .flags          = IXP4XX_GPIO_LOW,
  82         },
  83 };
  84
  85 static struct platform_device nslu2_leds = {
  86         .name                   = "IXP4XX-GPIO-LED",
  87         .id                     = -1,
  88         .num_resources          = ARRAY_SIZE(nslu2_led_resources),
  89         .resource               = nslu2_led_resources,
  90 };
  91 #endif
  92
  93 static struct platform_device nslu2_i2c_gpio = {
  94         .name                   = "i2c-gpio",
  95         .id                     = 0,
  96         .dev     = {
  97                 .platform_data  = &nslu2_i2c_gpio_data,
  98         },
  99 };
 100
 101 static struct platform_device nslu2_beeper = {
 102         .name                   = "ixp4xx-beeper",
 103         .id                     = NSLU2_GPIO_BUZZ,
 104         .num_resources          = 0,
 105 };
 106
 107 static struct resource nslu2_uart_resources[] = {
 108         {
 109                 .start          = IXP4XX_UART1_BASE_PHYS,
 110                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 111                 .flags          = IORESOURCE_MEM,
 112         },
 113         {
 114                 .start          = IXP4XX_UART2_BASE_PHYS,
 115                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 116                 .flags          = IORESOURCE_MEM,
 117         }
 118 };
 119
 120 static struct plat_serial8250_port nslu2_uart_data[] = {
 121         {
 122                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 123                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 124                 .irq            = IRQ_IXP4XX_UART1,
 125                 .flags          = UPF_BOOT_AUTOCONF,
 126                 .iotype         = UPIO_MEM,
 127                 .regshift       = 2,
 128                 .uartclk        = IXP4XX_UART_XTAL,
 129         },
 130         {
 131                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 132                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 133                 .irq            = IRQ_IXP4XX_UART2,
 134                 .flags          = UPF_BOOT_AUTOCONF,
 135                 .iotype         = UPIO_MEM,
 136                 .regshift       = 2,
 137                 .uartclk        = IXP4XX_UART_XTAL,
 138         },
 139         { }
 140 };
 141
 142 static struct platform_device nslu2_uart = {
 143         .name                   = "serial8250",
 144         .id                     = PLAT8250_DEV_PLATFORM,
 145         .dev.platform_data      = nslu2_uart_data,
 146         .num_resources          = 2,
 147         .resource               = nslu2_uart_resources,
 148 };
 149
 150 static struct platform_device *nslu2_devices[] __initdata = {
 151         &nslu2_i2c_gpio,
 152         &nslu2_flash,
 153         &nslu2_beeper,
 154 #ifdef CONFIG_LEDS_IXP4XX
 155         &nslu2_leds,
 156 #endif
 157 };
 158
 159 static void nslu2_power_off(void)
 160 {
 161         /* This causes the box to drop the power and go dead. */
 162
 163         /* enable the pwr cntl gpio */
 164         gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
 165
 166         /* do the deed */
 167         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 168 }
 169
 170 static void __init nslu2_timer_init(void)
 171 {
 172     /* The xtal on this machine is non-standard. */
 173     ixp4xx_timer_freq = NSLU2_FREQ;
 174
 175     /* Call standard timer_init function. */
 176     ixp4xx_timer_init();
 177 }
 178
 179 static struct sys_timer nslu2_timer = {
 180     .init   = nslu2_timer_init,
 181 };
 182
 183 static void __init nslu2_init(void)
 184 {
 185         ixp4xx_sys_init();
 186
 187         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 188         nslu2_flash_resource.end =
 189                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 190
 191         pm_power_off = nslu2_power_off;
 192
 193         i2c_register_board_info(0, nslu2_i2c_board_info,
 194                                 ARRAY_SIZE(nslu2_i2c_board_info));
 195
 196         /*
 197          * This is only useful on a modified machine, but it is valuable
 198          * to have it first in order to see debug messages, and so that
 199          * it does *not* get removed if platform_add_devices fails!
 200          */
 201         (void)platform_device_register(&nslu2_uart);
 202
 203         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 204 }
 205
 206 MACHINE_START(NSLU2, "Linksys NSLU2")
 207         /* Maintainer: www.nslu2-linux.org */
 208         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 209         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 210         .boot_params    = 0x00000100,
 211         .map_io         = ixp4xx_map_io,
 212         .init_irq       = ixp4xx_init_irq,
 213         .timer          = &nslu2_timer,
 214         .init_machine   = nslu2_init,
 215 MACHINE_END