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 #include <linux/i2c-gpio.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/flash.h>
  24
  25 static struct flash_platform_data nas100d_flash_data = {
  26         .map_name               = "cfi_probe",
  27         .width                  = 2,
  28 };
  29
  30 static struct resource nas100d_flash_resource = {
  31         .flags                  = IORESOURCE_MEM,
  32 };
  33
  34 static struct platform_device nas100d_flash = {
  35         .name                   = "IXP4XX-Flash",
  36         .id                     = 0,
  37         .dev.platform_data      = &nas100d_flash_data,
  38         .num_resources          = 1,
  39         .resource               = &nas100d_flash_resource,
  40 };
  41
  42 #ifdef CONFIG_LEDS_IXP4XX
  43 static struct resource nas100d_led_resources[] = {
  44         {
  45                 .name           = "wlan",   /* green led */
  46                 .start          = 0,
  47                 .end            = 0,
  48                 .flags          = IXP4XX_GPIO_LOW,
  49         },
  50         {
  51                 .name           = "ready",  /* blue power led (off is flashing!) */
  52                 .start          = 15,
  53                 .end            = 15,
  54                 .flags          = IXP4XX_GPIO_LOW,
  55         },
  56         {
  57                 .name           = "disk",   /* yellow led */
  58                 .start          = 3,
  59                 .end            = 3,
  60                 .flags          = IXP4XX_GPIO_LOW,
  61         },
  62 };
  63
  64 static struct platform_device nas100d_leds = {
  65         .name                   = "IXP4XX-GPIO-LED",
  66         .id                     = -1,
  67         .num_resources          = ARRAY_SIZE(nas100d_led_resources),
  68         .resource               = nas100d_led_resources,
  69 };
  70 #endif
  71
  72 static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = {
  73         .sda_pin                = NAS100D_SDA_PIN,
  74         .scl_pin                = NAS100D_SCL_PIN,
  75 };
  76
  77 static struct platform_device nas100d_i2c_gpio = {
  78         .name                   = "i2c-gpio",
  79         .id                     = 0,
  80         .dev     = {
  81                 .platform_data  = &nas100d_i2c_gpio_data,
  82         },
  83 };
  84
  85 static struct resource nas100d_uart_resources[] = {
  86         {
  87                 .start          = IXP4XX_UART1_BASE_PHYS,
  88                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  89                 .flags          = IORESOURCE_MEM,
  90         },
  91         {
  92                 .start          = IXP4XX_UART2_BASE_PHYS,
  93                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  94                 .flags          = IORESOURCE_MEM,
  95         }
  96 };
  97
  98 static struct plat_serial8250_port nas100d_uart_data[] = {
  99         {
 100                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 101                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 102                 .irq            = IRQ_IXP4XX_UART1,
 103                 .flags          = UPF_BOOT_AUTOCONF,
 104                 .iotype         = UPIO_MEM,
 105                 .regshift       = 2,
 106                 .uartclk        = IXP4XX_UART_XTAL,
 107         },
 108         {
 109                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 110                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 111                 .irq            = IRQ_IXP4XX_UART2,
 112                 .flags          = UPF_BOOT_AUTOCONF,
 113                 .iotype         = UPIO_MEM,
 114                 .regshift       = 2,
 115                 .uartclk        = IXP4XX_UART_XTAL,
 116         },
 117         { }
 118 };
 119
 120 static struct platform_device nas100d_uart = {
 121         .name                   = "serial8250",
 122         .id                     = PLAT8250_DEV_PLATFORM,
 123         .dev.platform_data      = nas100d_uart_data,
 124         .num_resources          = 2,
 125         .resource               = nas100d_uart_resources,
 126 };
 127
 128 static struct platform_device *nas100d_devices[] __initdata = {
 129         &nas100d_i2c_gpio,
 130         &nas100d_flash,
 131 #ifdef CONFIG_LEDS_IXP4XX
 132         &nas100d_leds,
 133 #endif
 134 };
 135
 136 static void nas100d_power_off(void)
 137 {
 138         /* This causes the box to drop the power and go dead. */
 139
 140         /* enable the pwr cntl gpio */
 141         gpio_line_config(NAS100D_PO_GPIO, IXP4XX_GPIO_OUT);
 142
 143         /* do the deed */
 144         gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH);
 145 }
 146
 147 static void __init nas100d_init(void)
 148 {
 149         ixp4xx_sys_init();
 150
 151         /* gpio 14 and 15 are _not_ clocks */
 152         *IXP4XX_GPIO_GPCLKR = 0;
 153
 154         nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 155         nas100d_flash_resource.end =
 156                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 157
 158         pm_power_off = nas100d_power_off;
 159
 160         /*
 161          * This is only useful on a modified machine, but it is valuable
 162          * to have it first in order to see debug messages, and so that
 163          * it does *not* get removed if platform_add_devices fails!
 164          */
 165         (void)platform_device_register(&nas100d_uart);
 166
 167         platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
 168 }
 169
 170 MACHINE_START(NAS100D, "Iomega NAS 100d")
 171         /* Maintainer: www.nslu2-linux.org */
 172         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 173         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 174         .boot_params    = 0x00000100,
 175         .map_io         = ixp4xx_map_io,
 176         .init_irq       = ixp4xx_init_irq,
 177         .timer          = &ixp4xx_timer,
 178         .init_machine   = nas100d_init,
 179 MACHINE_END