14645ebabd
* Convert GPIO and IRQ handling to use the <asm/gpio.h> api. * Perform the reset only after the power button has been held down for at least two seconds. Do the reset on the release of the power button, so that NAS devices which have been set to auto-power-on (by solder bridging the power button) do not continuously power cycle. * Remove all superflous constants from nas100d.h * Add LED constants to nas100d.h while we're there. * Update the board LED setup code to use those constants. Signed-off-by: Rod Whitby <rod@whitby.id.au> Acked-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
179 lines
4.2 KiB
C
179 lines
4.2 KiB
C
/*
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* arch/arm/mach-ixp4xx/nas100d-setup.c
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*
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* NAS 100d board-setup
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*
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* based ixdp425-setup.c:
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* Copyright (C) 2003-2004 MontaVista Software, Inc.
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*
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* Author: Alessandro Zummo <a.zummo@towertech.it>
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* Author: Rod Whitby <rod@whitby.id.au>
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* Maintainers: http://www.nslu2-linux.org/
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*
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*/
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#include <linux/kernel.h>
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#include <linux/serial.h>
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#include <linux/serial_8250.h>
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#include <linux/leds.h>
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#include <linux/i2c-gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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static struct flash_platform_data nas100d_flash_data = {
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.map_name = "cfi_probe",
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.width = 2,
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};
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static struct resource nas100d_flash_resource = {
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device nas100d_flash = {
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.name = "IXP4XX-Flash",
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.id = 0,
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.dev.platform_data = &nas100d_flash_data,
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.num_resources = 1,
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.resource = &nas100d_flash_resource,
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};
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#ifdef CONFIG_LEDS_IXP4XX
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static struct resource nas100d_led_resources[] = {
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{
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.name = "wlan", /* green led */
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.start = NAS100D_LED_WLAN_GPIO,
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.end = NAS100D_LED_WLAN_GPIO,
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.flags = IXP4XX_GPIO_LOW,
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},
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{
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.name = "power", /* blue power led (off=flashing) */
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.start = NAS100D_LED_PWR_GPIO,
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.end = NAS100D_LED_PWR_GPIO,
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.flags = IXP4XX_GPIO_LOW,
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},
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{
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.name = "disk", /* yellow led */
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.start = NAS100D_LED_DISK_GPIO,
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.end = NAS100D_LED_DISK_GPIO,
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.flags = IXP4XX_GPIO_LOW,
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},
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};
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static struct platform_device nas100d_leds = {
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.name = "IXP4XX-GPIO-LED",
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.id = -1,
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.num_resources = ARRAY_SIZE(nas100d_led_resources),
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.resource = nas100d_led_resources,
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};
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#endif
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static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = {
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.sda_pin = NAS100D_SDA_PIN,
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.scl_pin = NAS100D_SCL_PIN,
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};
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static struct platform_device nas100d_i2c_gpio = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &nas100d_i2c_gpio_data,
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},
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};
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static struct resource nas100d_uart_resources[] = {
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{
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.start = IXP4XX_UART1_BASE_PHYS,
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.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = IXP4XX_UART2_BASE_PHYS,
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.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct plat_serial8250_port nas100d_uart_data[] = {
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{
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.mapbase = IXP4XX_UART1_BASE_PHYS,
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.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
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.irq = IRQ_IXP4XX_UART1,
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.flags = UPF_BOOT_AUTOCONF,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = IXP4XX_UART_XTAL,
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},
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{
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.mapbase = IXP4XX_UART2_BASE_PHYS,
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.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
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.irq = IRQ_IXP4XX_UART2,
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.flags = UPF_BOOT_AUTOCONF,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = IXP4XX_UART_XTAL,
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},
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{ }
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};
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static struct platform_device nas100d_uart = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev.platform_data = nas100d_uart_data,
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.num_resources = 2,
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.resource = nas100d_uart_resources,
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};
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static struct platform_device *nas100d_devices[] __initdata = {
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&nas100d_i2c_gpio,
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&nas100d_flash,
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#ifdef CONFIG_LEDS_IXP4XX
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&nas100d_leds,
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#endif
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};
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static void nas100d_power_off(void)
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{
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/* This causes the box to drop the power and go dead. */
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/* enable the pwr cntl gpio */
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gpio_line_config(NAS100D_PO_GPIO, IXP4XX_GPIO_OUT);
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/* do the deed */
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gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH);
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}
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static void __init nas100d_init(void)
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{
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ixp4xx_sys_init();
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/* gpio 14 and 15 are _not_ clocks */
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*IXP4XX_GPIO_GPCLKR = 0;
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nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
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nas100d_flash_resource.end =
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IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
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pm_power_off = nas100d_power_off;
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/*
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* This is only useful on a modified machine, but it is valuable
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* to have it first in order to see debug messages, and so that
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* it does *not* get removed if platform_add_devices fails!
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*/
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(void)platform_device_register(&nas100d_uart);
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platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
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}
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MACHINE_START(NAS100D, "Iomega NAS 100d")
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/* Maintainer: www.nslu2-linux.org */
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.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
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.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
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.boot_params = 0x00000100,
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.map_io = ixp4xx_map_io,
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.init_irq = ixp4xx_init_irq,
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.timer = &ixp4xx_timer,
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.init_machine = nas100d_init,
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MACHINE_END
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