err.no Git - linux-2.6/blob - arch/arm/mach-ixp4xx/dsmg600-setup.c

   1 /*
   2  * DSM-G600 board-setup
   3  *
   4  * Copyright (C) 2006 Tower Technologies
   5  * Author: Alessandro Zummo <a.zummo@towertech.it>
   6  *
   7  * based ixdp425-setup.c:
   8  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
   9  *
  10  * Author: Alessandro Zummo <a.zummo@towertech.it>
  11  * Maintainers: http://www.nslu2-linux.org/
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/serial.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/i2c-gpio.h>
  18
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/flash.h>
  22 #include <asm/mach/time.h>
  23
  24 static struct flash_platform_data dsmg600_flash_data = {
  25         .map_name               = "cfi_probe",
  26         .width                  = 2,
  27 };
  28
  29 static struct resource dsmg600_flash_resource = {
  30         .flags                  = IORESOURCE_MEM,
  31 };
  32
  33 static struct platform_device dsmg600_flash = {
  34         .name                   = "IXP4XX-Flash",
  35         .id                     = 0,
  36         .dev.platform_data      = &dsmg600_flash_data,
  37         .num_resources          = 1,
  38         .resource               = &dsmg600_flash_resource,
  39 };
  40
  41 static struct i2c_gpio_platform_data dsmg600_i2c_gpio_data = {
  42         .sda_pin                = DSMG600_SDA_PIN,
  43         .scl_pin                = DSMG600_SCL_PIN,
  44 };
  45
  46 static struct platform_device dsmg600_i2c_gpio = {
  47         .name                   = "i2c-gpio",
  48         .id                     = 0,
  49         .dev     = {
  50                 .platform_data  = &dsmg600_i2c_gpio_data,
  51         },
  52 };
  53
  54 #ifdef CONFIG_LEDS_CLASS
  55 static struct resource dsmg600_led_resources[] = {
  56         {
  57                 .name           = "power",
  58                 .start          = DSMG600_LED_PWR_GPIO,
  59                 .end            = DSMG600_LED_PWR_GPIO,
  60                 .flags          = IXP4XX_GPIO_HIGH,
  61         },
  62         {
  63                 .name           = "wlan",
  64                 .start          = DSMG600_LED_WLAN_GPIO,
  65                 .end            = DSMG600_LED_WLAN_GPIO,
  66                 .flags          = IXP4XX_GPIO_LOW,
  67         },
  68 };
  69
  70 static struct platform_device dsmg600_leds = {
  71         .name                   = "IXP4XX-GPIO-LED",
  72         .id                     = -1,
  73         .num_resources          = ARRAY_SIZE(dsmg600_led_resources),
  74         .resource               = dsmg600_led_resources,
  75 };
  76 #endif
  77
  78 static struct resource dsmg600_uart_resources[] = {
  79         {
  80                 .start          = IXP4XX_UART1_BASE_PHYS,
  81                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84         {
  85                 .start          = IXP4XX_UART2_BASE_PHYS,
  86                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  87                 .flags          = IORESOURCE_MEM,
  88         }
  89 };
  90
  91 static struct plat_serial8250_port dsmg600_uart_data[] = {
  92         {
  93                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  94                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  95                 .irq            = IRQ_IXP4XX_UART1,
  96                 .flags          = UPF_BOOT_AUTOCONF,
  97                 .iotype         = UPIO_MEM,
  98                 .regshift       = 2,
  99                 .uartclk        = IXP4XX_UART_XTAL,
 100         },
 101         {
 102                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 103                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 104                 .irq            = IRQ_IXP4XX_UART2,
 105                 .flags          = UPF_BOOT_AUTOCONF,
 106                 .iotype         = UPIO_MEM,
 107                 .regshift       = 2,
 108                 .uartclk        = IXP4XX_UART_XTAL,
 109         },
 110         { }
 111 };
 112
 113 static struct platform_device dsmg600_uart = {
 114         .name                   = "serial8250",
 115         .id                     = PLAT8250_DEV_PLATFORM,
 116         .dev.platform_data      = dsmg600_uart_data,
 117         .num_resources          = ARRAY_SIZE(dsmg600_uart_resources),
 118         .resource               = dsmg600_uart_resources,
 119 };
 120
 121 static struct platform_device *dsmg600_devices[] __initdata = {
 122         &dsmg600_i2c_gpio,
 123         &dsmg600_flash,
 124 };
 125
 126 static void dsmg600_power_off(void)
 127 {
 128         /* enable the pwr cntl gpio */
 129         gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
 130
 131         /* poweroff */
 132         gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
 133 }
 134
 135 static void __init dsmg600_timer_init(void)
 136 {
 137     /* The xtal on this machine is non-standard. */
 138     ixp4xx_timer_freq = DSMG600_FREQ;
 139
 140     /* Call standard timer_init function. */
 141     ixp4xx_timer_init();
 142 }
 143
 144 static struct sys_timer dsmg600_timer = {
 145     .init   = dsmg600_timer_init,
 146 };
 147
 148 static void __init dsmg600_init(void)
 149 {
 150         ixp4xx_sys_init();
 151
 152         /* Make sure that GPIO14 and GPIO15 are not used as clocks */
 153         *IXP4XX_GPIO_GPCLKR = 0;
 154
 155         dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 156         dsmg600_flash_resource.end =
 157                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 158
 159         pm_power_off = dsmg600_power_off;
 160
 161         /* The UART is required on the DSM-G600 (Redboot cannot use the
 162          * NIC) -- do it here so that it does *not* get removed if
 163          * platform_add_devices fails!
 164          */
 165         (void)platform_device_register(&dsmg600_uart);
 166
 167         platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
 168
 169 #ifdef CONFIG_LEDS_CLASS
 170         /* We don't care whether or not this works. */
 171         (void)platform_device_register(&dsmg600_leds);
 172 #endif
 173 }
 174
 175 MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
 176         /* Maintainer: www.nslu2-linux.org */
 177         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 178         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 179         .boot_params    = 0x00000100,
 180         .map_io         = ixp4xx_map_io,
 181         .init_irq       = ixp4xx_init_irq,
 182         .timer          = &dsmg600_timer,
 183         .init_machine   = dsmg600_init,
 184 MACHINE_END