arch/arm/mach-ixp4xx/nas100d-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/nas100d-setup.c
   3  *
   4  * NAS 100d board-setup
   5  *
   6  * based ixdp425-setup.c:
   7  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
   8  *
   9  * Author: Alessandro Zummo <a.zummo@towertech.it>
  10  * Author: Rod Whitby <rod@whitby.id.au>
  11  * Maintainers: http://www.nslu2-linux.org/
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/serial.h>
  17 #include <linux/serial_8250.h>
  18 #include <linux/leds.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/flash.h>
  23
  24 static struct flash_platform_data nas100d_flash_data = {
  25         .map_name               = "cfi_probe",
  26         .width                  = 2,
  27 };
  28
  29 static struct resource nas100d_flash_resource = {
  30         .flags                  = IORESOURCE_MEM,
  31 };
  32
  33 static struct platform_device nas100d_flash = {
  34         .name                   = "IXP4XX-Flash",
  35         .id                     = 0,
  36         .dev.platform_data      = &nas100d_flash_data,
  37         .num_resources          = 1,
  38         .resource               = &nas100d_flash_resource,
  39 };
  40
  41 #ifdef CONFIG_LEDS_IXP4XX
  42 static struct resource nas100d_led_resources[] = {
  43         {
  44                 .name           = "wlan",   /* green led */
  45                 .start          = 0,
  46                 .end            = 0,
  47                 .flags          = IXP4XX_GPIO_LOW,
  48         },
  49         {
  50                 .name           = "ready",  /* blue power led (off is flashing!) */
  51                 .start          = 15,
  52                 .end            = 15,
  53                 .flags          = IXP4XX_GPIO_LOW,
  54         },
  55         {
  56                 .name           = "disk",   /* yellow led */
  57                 .start          = 3,
  58                 .end            = 3,
  59                 .flags          = IXP4XX_GPIO_LOW,
  60         },
  61 };
  62
  63 static struct platform_device nas100d_leds = {
  64         .name                   = "IXP4XX-GPIO-LED",
  65         .id                     = -1,
  66         .num_resources          = ARRAY_SIZE(nas100d_led_resources),
  67         .resource               = nas100d_led_resources,
  68 };
  69 #endif
  70
  71 static struct ixp4xx_i2c_pins nas100d_i2c_gpio_pins = {
  72         .sda_pin                = NAS100D_SDA_PIN,
  73         .scl_pin                = NAS100D_SCL_PIN,
  74 };
  75
  76 static struct platform_device nas100d_i2c_controller = {
  77         .name                   = "IXP4XX-I2C",
  78         .id                     = 0,
  79         .dev.platform_data      = &nas100d_i2c_gpio_pins,
  80         .num_resources          = 0,
  81 };
  82
  83 static struct resource nas100d_uart_resources[] = {
  84         {
  85                 .start          = IXP4XX_UART1_BASE_PHYS,
  86                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  87                 .flags          = IORESOURCE_MEM,
  88         },
  89         {
  90                 .start          = IXP4XX_UART2_BASE_PHYS,
  91                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  92                 .flags          = IORESOURCE_MEM,
  93         }
  94 };
  95
  96 static struct plat_serial8250_port nas100d_uart_data[] = {
  97         {
  98                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  99                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 100                 .irq            = IRQ_IXP4XX_UART1,
 101                 .flags          = UPF_BOOT_AUTOCONF,
 102                 .iotype         = UPIO_MEM,
 103                 .regshift       = 2,
 104                 .uartclk        = IXP4XX_UART_XTAL,
 105         },
 106         {
 107                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 108                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 109                 .irq            = IRQ_IXP4XX_UART2,
 110                 .flags          = UPF_BOOT_AUTOCONF,
 111                 .iotype         = UPIO_MEM,
 112                 .regshift       = 2,
 113                 .uartclk        = IXP4XX_UART_XTAL,
 114         },
 115         { }
 116 };
 117
 118 static struct platform_device nas100d_uart = {
 119         .name                   = "serial8250",
 120         .id                     = PLAT8250_DEV_PLATFORM,
 121         .dev.platform_data      = nas100d_uart_data,
 122         .num_resources          = 2,
 123         .resource               = nas100d_uart_resources,
 124 };
 125
 126 static struct platform_device *nas100d_devices[] __initdata = {
 127         &nas100d_i2c_controller,
 128         &nas100d_flash,
 129 #ifdef CONFIG_LEDS_IXP4XX
 130         &nas100d_leds,
 131 #endif
 132 };
 133
 134 static void nas100d_power_off(void)
 135 {
 136         /* This causes the box to drop the power and go dead. */
 137
 138         /* enable the pwr cntl gpio */
 139         gpio_line_config(NAS100D_PO_GPIO, IXP4XX_GPIO_OUT);
 140
 141         /* do the deed */
 142         gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH);
 143 }
 144
 145 static void __init nas100d_init(void)
 146 {
 147         ixp4xx_sys_init();
 148
 149         /* gpio 14 and 15 are _not_ clocks */
 150         *IXP4XX_GPIO_GPCLKR = 0;
 151
 152         nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 153         nas100d_flash_resource.end =
 154                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 155
 156         pm_power_off = nas100d_power_off;
 157
 158         /* This is only useful on a modified machine, but it is valuable
 159          * to have it first in order to see debug messages, and so that
 160          * it does *not* get removed if platform_add_devices fails!
 161          */
 162         (void)platform_device_register(&nas100d_uart);
 163
 164         platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
 165 }
 166
 167 MACHINE_START(NAS100D, "Iomega NAS 100d")
 168         /* Maintainer: www.nslu2-linux.org */
 169         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 170         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 171         .boot_params    = 0x00000100,
 172         .map_io         = ixp4xx_map_io,
 173         .init_irq       = ixp4xx_init_irq,
 174         .timer          = &ixp4xx_timer,
 175         .init_machine   = nas100d_init,
 176 MACHINE_END