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.h>
  18 #include <linux/i2c-gpio.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/flash.h>
  23 #include <asm/mach/time.h>
  24
  25 static struct flash_platform_data dsmg600_flash_data = {
  26         .map_name               = "cfi_probe",
  27         .width                  = 2,
  28 };
  29
  30 static struct resource dsmg600_flash_resource = {
  31         .flags                  = IORESOURCE_MEM,
  32 };
  33
  34 static struct platform_device dsmg600_flash = {
  35         .name                   = "IXP4XX-Flash",
  36         .id                     = 0,
  37         .dev.platform_data      = &dsmg600_flash_data,
  38         .num_resources          = 1,
  39         .resource               = &dsmg600_flash_resource,
  40 };
  41
  42 static struct i2c_gpio_platform_data dsmg600_i2c_gpio_data = {
  43         .sda_pin                = DSMG600_SDA_PIN,
  44         .scl_pin                = DSMG600_SCL_PIN,
  45 };
  46
  47 static struct platform_device dsmg600_i2c_gpio = {
  48         .name                   = "i2c-gpio",
  49         .id                     = 0,
  50         .dev     = {
  51                 .platform_data  = &dsmg600_i2c_gpio_data,
  52         },
  53 };
  54
  55 static struct i2c_board_info __initdata dsmg600_i2c_board_info [] = {
  56         {
  57                 I2C_BOARD_INFO("rtc-pcf8563", 0x51),
  58         },
  59 };
  60
  61 #ifdef CONFIG_LEDS_CLASS
  62 static struct resource dsmg600_led_resources[] = {
  63         {
  64                 .name           = "power",
  65                 .start          = DSMG600_LED_PWR_GPIO,
  66                 .end            = DSMG600_LED_PWR_GPIO,
  67                 .flags          = IXP4XX_GPIO_HIGH,
  68         },
  69         {
  70                 .name           = "wlan",
  71                 .start          = DSMG600_LED_WLAN_GPIO,
  72                 .end            = DSMG600_LED_WLAN_GPIO,
  73                 .flags          = IXP4XX_GPIO_LOW,
  74         },
  75 };
  76
  77 static struct platform_device dsmg600_leds = {
  78         .name                   = "IXP4XX-GPIO-LED",
  79         .id                     = -1,
  80         .num_resources          = ARRAY_SIZE(dsmg600_led_resources),
  81         .resource               = dsmg600_led_resources,
  82 };
  83 #endif
  84
  85 static struct resource dsmg600_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 dsmg600_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 dsmg600_uart = {
 121         .name                   = "serial8250",
 122         .id                     = PLAT8250_DEV_PLATFORM,
 123         .dev.platform_data      = dsmg600_uart_data,
 124         .num_resources          = ARRAY_SIZE(dsmg600_uart_resources),
 125         .resource               = dsmg600_uart_resources,
 126 };
 127
 128 static struct platform_device *dsmg600_devices[] __initdata = {
 129         &dsmg600_i2c_gpio,
 130         &dsmg600_flash,
 131 };
 132
 133 static void dsmg600_power_off(void)
 134 {
 135         /* enable the pwr cntl gpio */
 136         gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
 137
 138         /* poweroff */
 139         gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
 140 }
 141
 142 static void __init dsmg600_timer_init(void)
 143 {
 144     /* The xtal on this machine is non-standard. */
 145     ixp4xx_timer_freq = DSMG600_FREQ;
 146
 147     /* Call standard timer_init function. */
 148     ixp4xx_timer_init();
 149 }
 150
 151 static struct sys_timer dsmg600_timer = {
 152     .init   = dsmg600_timer_init,
 153 };
 154
 155 static void __init dsmg600_init(void)
 156 {
 157         ixp4xx_sys_init();
 158
 159         /* Make sure that GPIO14 and GPIO15 are not used as clocks */
 160         *IXP4XX_GPIO_GPCLKR = 0;
 161
 162         dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 163         dsmg600_flash_resource.end =
 164                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 165
 166         pm_power_off = dsmg600_power_off;
 167
 168         i2c_register_board_info(0, dsmg600_i2c_board_info,
 169                                 ARRAY_SIZE(dsmg600_i2c_board_info));
 170
 171         /* The UART is required on the DSM-G600 (Redboot cannot use the
 172          * NIC) -- do it here so that it does *not* get removed if
 173          * platform_add_devices fails!
 174          */
 175         (void)platform_device_register(&dsmg600_uart);
 176
 177         platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
 178
 179 #ifdef CONFIG_LEDS_CLASS
 180         /* We don't care whether or not this works. */
 181         (void)platform_device_register(&dsmg600_leds);
 182 #endif
 183 }
 184
 185 MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
 186         /* Maintainer: www.nslu2-linux.org */
 187         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 188         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 189         .boot_params    = 0x00000100,
 190         .map_io         = ixp4xx_map_io,
 191         .init_irq       = ixp4xx_init_irq,
 192         .timer          = &dsmg600_timer,
 193         .init_machine   = dsmg600_init,
 194 MACHINE_END