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   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.h>
  20 #include <linux/i2c-gpio.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/flash.h>
  25
  26 static struct flash_platform_data nas100d_flash_data = {
  27         .map_name               = "cfi_probe",
  28         .width                  = 2,
  29 };
  30
  31 static struct resource nas100d_flash_resource = {
  32         .flags                  = IORESOURCE_MEM,
  33 };
  34
  35 static struct platform_device nas100d_flash = {
  36         .name                   = "IXP4XX-Flash",
  37         .id                     = 0,
  38         .dev.platform_data      = &nas100d_flash_data,
  39         .num_resources          = 1,
  40         .resource               = &nas100d_flash_resource,
  41 };
  42
  43 static struct i2c_board_info __initdata nas100d_i2c_board_info [] = {
  44         {
  45                 I2C_BOARD_INFO("rtc-pcf8563", 0x51),
  46         },
  47 };
  48
  49 #ifdef CONFIG_LEDS_IXP4XX
  50 static struct resource nas100d_led_resources[] = {
  51         {
  52                 .name           = "wlan",   /* green led */
  53                 .start          = NAS100D_LED_WLAN_GPIO,
  54                 .end            = NAS100D_LED_WLAN_GPIO,
  55                 .flags          = IXP4XX_GPIO_LOW,
  56         },
  57         {
  58                 .name           = "power",  /* blue power led (off=flashing) */
  59                 .start          = NAS100D_LED_PWR_GPIO,
  60                 .end            = NAS100D_LED_PWR_GPIO,
  61                 .flags          = IXP4XX_GPIO_LOW,
  62         },
  63         {
  64                 .name           = "disk",   /* yellow led */
  65                 .start          = NAS100D_LED_DISK_GPIO,
  66                 .end            = NAS100D_LED_DISK_GPIO,
  67                 .flags          = IXP4XX_GPIO_LOW,
  68         },
  69 };
  70
  71 static struct platform_device nas100d_leds = {
  72         .name                   = "IXP4XX-GPIO-LED",
  73         .id                     = -1,
  74         .num_resources          = ARRAY_SIZE(nas100d_led_resources),
  75         .resource               = nas100d_led_resources,
  76 };
  77 #endif
  78
  79 static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = {
  80         .sda_pin                = NAS100D_SDA_PIN,
  81         .scl_pin                = NAS100D_SCL_PIN,
  82 };
  83
  84 static struct platform_device nas100d_i2c_gpio = {
  85         .name                   = "i2c-gpio",
  86         .id                     = 0,
  87         .dev     = {
  88                 .platform_data  = &nas100d_i2c_gpio_data,
  89         },
  90 };
  91
  92 static struct resource nas100d_uart_resources[] = {
  93         {
  94                 .start          = IXP4XX_UART1_BASE_PHYS,
  95                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  96                 .flags          = IORESOURCE_MEM,
  97         },
  98         {
  99                 .start          = IXP4XX_UART2_BASE_PHYS,
 100                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 101                 .flags          = IORESOURCE_MEM,
 102         }
 103 };
 104
 105 static struct plat_serial8250_port nas100d_uart_data[] = {
 106         {
 107                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 108                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 109                 .irq            = IRQ_IXP4XX_UART1,
 110                 .flags          = UPF_BOOT_AUTOCONF,
 111                 .iotype         = UPIO_MEM,
 112                 .regshift       = 2,
 113                 .uartclk        = IXP4XX_UART_XTAL,
 114         },
 115         {
 116                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 117                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 118                 .irq            = IRQ_IXP4XX_UART2,
 119                 .flags          = UPF_BOOT_AUTOCONF,
 120                 .iotype         = UPIO_MEM,
 121                 .regshift       = 2,
 122                 .uartclk        = IXP4XX_UART_XTAL,
 123         },
 124         { }
 125 };
 126
 127 static struct platform_device nas100d_uart = {
 128         .name                   = "serial8250",
 129         .id                     = PLAT8250_DEV_PLATFORM,
 130         .dev.platform_data      = nas100d_uart_data,
 131         .num_resources          = 2,
 132         .resource               = nas100d_uart_resources,
 133 };
 134
 135 static struct platform_device *nas100d_devices[] __initdata = {
 136         &nas100d_i2c_gpio,
 137         &nas100d_flash,
 138 #ifdef CONFIG_LEDS_IXP4XX
 139         &nas100d_leds,
 140 #endif
 141 };
 142
 143 static void nas100d_power_off(void)
 144 {
 145         /* This causes the box to drop the power and go dead. */
 146
 147         /* enable the pwr cntl gpio */
 148         gpio_line_config(NAS100D_PO_GPIO, IXP4XX_GPIO_OUT);
 149
 150         /* do the deed */
 151         gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH);
 152 }
 153
 154 static void __init nas100d_init(void)
 155 {
 156         ixp4xx_sys_init();
 157
 158         /* gpio 14 and 15 are _not_ clocks */
 159         *IXP4XX_GPIO_GPCLKR = 0;
 160
 161         nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 162         nas100d_flash_resource.end =
 163                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 164
 165         pm_power_off = nas100d_power_off;
 166
 167         i2c_register_board_info(0, nas100d_i2c_board_info,
 168                                 ARRAY_SIZE(nas100d_i2c_board_info));
 169
 170         /*
 171          * This is only useful on a modified machine, but it is valuable
 172          * to have it first in order to see debug messages, and so that
 173          * it does *not* get removed if platform_add_devices fails!
 174          */
 175         (void)platform_device_register(&nas100d_uart);
 176
 177         platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
 178 }
 179
 180 MACHINE_START(NAS100D, "Iomega NAS 100d")
 181         /* Maintainer: www.nslu2-linux.org */
 182         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 183         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 184         .boot_params    = 0x00000100,
 185         .map_io         = ixp4xx_map_io,
 186         .init_irq       = ixp4xx_init_irq,
 187         .timer          = &ixp4xx_timer,
 188         .init_machine   = nas100d_init,
 189 MACHINE_END