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