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
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/flash.h>
  21 #include <asm/mach/time.h>
  22
  23 static struct flash_platform_data dsmg600_flash_data = {
  24         .map_name               = "cfi_probe",
  25         .width                  = 2,
  26 };
  27
  28 static struct resource dsmg600_flash_resource = {
  29         .flags                  = IORESOURCE_MEM,
  30 };
  31
  32 static struct platform_device dsmg600_flash = {
  33         .name                   = "IXP4XX-Flash",
  34         .id                     = 0,
  35         .dev.platform_data      = &dsmg600_flash_data,
  36         .num_resources          = 1,
  37         .resource               = &dsmg600_flash_resource,
  38 };
  39
  40 static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = {
  41         .sda_pin                = DSMG600_SDA_PIN,
  42         .scl_pin                = DSMG600_SCL_PIN,
  43 };
  44
  45 static struct platform_device dsmg600_i2c_controller = {
  46         .name                   = "IXP4XX-I2C",
  47         .id                     = 0,
  48         .dev.platform_data      = &dsmg600_i2c_gpio_pins,
  49 };
  50
  51 #ifdef CONFIG_LEDS_CLASS
  52 static struct resource dsmg600_led_resources[] = {
  53         {
  54                 .name           = "power",
  55                 .start          = DSMG600_LED_PWR_GPIO,
  56                 .end            = DSMG600_LED_PWR_GPIO,
  57                 .flags          = IXP4XX_GPIO_HIGH,
  58         },
  59         {
  60                 .name           = "wlan",
  61                 .start          = DSMG600_LED_WLAN_GPIO,
  62                 .end            = DSMG600_LED_WLAN_GPIO,
  63                 .flags          = IXP4XX_GPIO_LOW,
  64         },
  65 };
  66
  67 static struct platform_device dsmg600_leds = {
  68         .name                   = "IXP4XX-GPIO-LED",
  69         .id                     = -1,
  70         .num_resources          = ARRAY_SIZE(dsmg600_led_resources),
  71         .resource               = dsmg600_led_resources,
  72 };
  73 #endif
  74
  75 static struct resource dsmg600_uart_resources[] = {
  76         {
  77                 .start          = IXP4XX_UART1_BASE_PHYS,
  78                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  79                 .flags          = IORESOURCE_MEM,
  80         },
  81         {
  82                 .start          = IXP4XX_UART2_BASE_PHYS,
  83                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  84                 .flags          = IORESOURCE_MEM,
  85         }
  86 };
  87
  88 static struct plat_serial8250_port dsmg600_uart_data[] = {
  89         {
  90                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  91                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  92                 .irq            = IRQ_IXP4XX_UART1,
  93                 .flags          = UPF_BOOT_AUTOCONF,
  94                 .iotype         = UPIO_MEM,
  95                 .regshift       = 2,
  96                 .uartclk        = IXP4XX_UART_XTAL,
  97         },
  98         {
  99                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 100                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 101                 .irq            = IRQ_IXP4XX_UART2,
 102                 .flags          = UPF_BOOT_AUTOCONF,
 103                 .iotype         = UPIO_MEM,
 104                 .regshift       = 2,
 105                 .uartclk        = IXP4XX_UART_XTAL,
 106         },
 107         { }
 108 };
 109
 110 static struct platform_device dsmg600_uart = {
 111         .name                   = "serial8250",
 112         .id                     = PLAT8250_DEV_PLATFORM,
 113         .dev.platform_data      = dsmg600_uart_data,
 114         .num_resources          = ARRAY_SIZE(dsmg600_uart_resources),
 115         .resource               = dsmg600_uart_resources,
 116 };
 117
 118 static struct platform_device *dsmg600_devices[] __initdata = {
 119         &dsmg600_i2c_controller,
 120         &dsmg600_flash,
 121 };
 122
 123 static void dsmg600_power_off(void)
 124 {
 125         /* enable the pwr cntl gpio */
 126         gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
 127
 128         /* poweroff */
 129         gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
 130 }
 131
 132 static void __init dsmg600_timer_init(void)
 133 {
 134     /* The xtal on this machine is non-standard. */
 135     ixp4xx_timer_freq = DSMG600_FREQ;
 136
 137     /* Call standard timer_init function. */
 138     ixp4xx_timer_init();
 139 }
 140
 141 static struct sys_timer dsmg600_timer = {
 142     .init   = dsmg600_timer_init,
 143 };
 144
 145 static void __init dsmg600_init(void)
 146 {
 147         ixp4xx_sys_init();
 148
 149         /* Make sure that GPIO14 and GPIO15 are not used as clocks */
 150         *IXP4XX_GPIO_GPCLKR = 0;
 151
 152         dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 153         dsmg600_flash_resource.end =
 154                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 155
 156         pm_power_off = dsmg600_power_off;
 157
 158         /* The UART is required on the DSM-G600 (Redboot cannot use the
 159          * NIC) -- do it here so that it does *not* get removed if
 160          * platform_add_devices fails!
 161          */
 162         (void)platform_device_register(&dsmg600_uart);
 163
 164         platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
 165
 166 #ifdef CONFIG_LEDS_CLASS
 167         /* We don't care whether or not this works. */
 168         (void)platform_device_register(&dsmg600_leds);
 169 #endif
 170 }
 171
 172 MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
 173         /* Maintainer: www.nslu2-linux.org */
 174         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 175         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 176         .boot_params    = 0x00000100,
 177         .map_io         = ixp4xx_map_io,
 178         .init_irq       = ixp4xx_init_irq,
 179         .timer          = &dsmg600_timer,
 180         .init_machine   = dsmg600_init,
 181 MACHINE_END