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 static struct gpio_led nslu2_led_pins[] = {
  58         {
  59                 .name           = "ready",  /* green led */
  60                 .gpio           = NSLU2_LED_GRN_GPIO,
  61         },
  62         {
  63                 .name           = "status", /* red led */
  64                 .gpio           = NSLU2_LED_RED_GPIO,
  65         },
  66         {
  67                 .name           = "disk-1",
  68                 .gpio           = NSLU2_LED_DISK1_GPIO,
  69                 .active_low     = true,
  70         },
  71         {
  72                 .name           = "disk-2",
  73                 .gpio           = NSLU2_LED_DISK2_GPIO,
  74                 .active_low     = true,
  75         },
  76 };
  77
  78 static struct gpio_led_platform_data nslu2_led_data = {
  79         .num_leds               = ARRAY_SIZE(nslu2_led_pins),
  80         .leds                   = nslu2_led_pins,
  81 };
  82
  83 static struct platform_device nslu2_leds = {
  84         .name                   = "leds-gpio",
  85         .id                     = -1,
  86         .dev.platform_data      = &nslu2_led_data,
  87 };
  88
  89 static struct platform_device nslu2_i2c_gpio = {
  90         .name                   = "i2c-gpio",
  91         .id                     = 0,
  92         .dev     = {
  93                 .platform_data  = &nslu2_i2c_gpio_data,
  94         },
  95 };
  96
  97 static struct platform_device nslu2_beeper = {
  98         .name                   = "ixp4xx-beeper",
  99         .id                     = NSLU2_GPIO_BUZZ,
 100         .num_resources          = 0,
 101 };
 102
 103 static struct resource nslu2_uart_resources[] = {
 104         {
 105                 .start          = IXP4XX_UART1_BASE_PHYS,
 106                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 107                 .flags          = IORESOURCE_MEM,
 108         },
 109         {
 110                 .start          = IXP4XX_UART2_BASE_PHYS,
 111                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 112                 .flags          = IORESOURCE_MEM,
 113         }
 114 };
 115
 116 static struct plat_serial8250_port nslu2_uart_data[] = {
 117         {
 118                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 119                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 120                 .irq            = IRQ_IXP4XX_UART1,
 121                 .flags          = UPF_BOOT_AUTOCONF,
 122                 .iotype         = UPIO_MEM,
 123                 .regshift       = 2,
 124                 .uartclk        = IXP4XX_UART_XTAL,
 125         },
 126         {
 127                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 128                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 129                 .irq            = IRQ_IXP4XX_UART2,
 130                 .flags          = UPF_BOOT_AUTOCONF,
 131                 .iotype         = UPIO_MEM,
 132                 .regshift       = 2,
 133                 .uartclk        = IXP4XX_UART_XTAL,
 134         },
 135         { }
 136 };
 137
 138 static struct platform_device nslu2_uart = {
 139         .name                   = "serial8250",
 140         .id                     = PLAT8250_DEV_PLATFORM,
 141         .dev.platform_data      = nslu2_uart_data,
 142         .num_resources          = 2,
 143         .resource               = nslu2_uart_resources,
 144 };
 145
 146 static struct platform_device *nslu2_devices[] __initdata = {
 147         &nslu2_i2c_gpio,
 148         &nslu2_flash,
 149         &nslu2_beeper,
 150         &nslu2_leds,
 151 };
 152
 153 static void nslu2_power_off(void)
 154 {
 155         /* This causes the box to drop the power and go dead. */
 156
 157         /* enable the pwr cntl gpio */
 158         gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
 159
 160         /* do the deed */
 161         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 162 }
 163
 164 static void __init nslu2_timer_init(void)
 165 {
 166     /* The xtal on this machine is non-standard. */
 167     ixp4xx_timer_freq = NSLU2_FREQ;
 168
 169     /* Call standard timer_init function. */
 170     ixp4xx_timer_init();
 171 }
 172
 173 static struct sys_timer nslu2_timer = {
 174     .init   = nslu2_timer_init,
 175 };
 176
 177 static void __init nslu2_init(void)
 178 {
 179         ixp4xx_sys_init();
 180
 181         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 182         nslu2_flash_resource.end =
 183                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 184
 185         pm_power_off = nslu2_power_off;
 186
 187         i2c_register_board_info(0, nslu2_i2c_board_info,
 188                                 ARRAY_SIZE(nslu2_i2c_board_info));
 189
 190         /*
 191          * This is only useful on a modified machine, but it is valuable
 192          * to have it first in order to see debug messages, and so that
 193          * it does *not* get removed if platform_add_devices fails!
 194          */
 195         (void)platform_device_register(&nslu2_uart);
 196
 197         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 198 }
 199
 200 MACHINE_START(NSLU2, "Linksys NSLU2")
 201         /* Maintainer: www.nslu2-linux.org */
 202         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 203         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 204         .boot_params    = 0x00000100,
 205         .map_io         = ixp4xx_map_io,
 206         .init_irq       = ixp4xx_init_irq,
 207         .timer          = &nslu2_timer,
 208         .init_machine   = nslu2_init,
 209 MACHINE_END