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 23static struct flash_platform_data dsmg600_flash_data = { 24 .map_name = "cfi_probe", 25 .width = 2, 26}; 27 28static struct resource dsmg600_flash_resource = { 29 .flags = IORESOURCE_MEM, 30}; 31 32static 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 40static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = { 41 .sda_pin = DSMG600_SDA_PIN, 42 .scl_pin = DSMG600_SCL_PIN, 43}; 44 45static 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 52static 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 67static 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 75static 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 88static 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 110static 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 118static struct platform_device *dsmg600_devices[] __initdata = { 119 &dsmg600_i2c_controller, 120 &dsmg600_flash, 121}; 122 123static 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 132static 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 141static struct sys_timer dsmg600_timer = { 142 .init = dsmg600_timer_init, 143}; 144 145static 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 172MACHINE_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, 181MACHINE_END 182