df6934b33c
Patch from Rod Whitby This patch implements NEW_LEDS support for the IOMega NAS100d. The NAS100d has three LED indicators, which are the only form of output for an unmodified device - there is no keyboard or display on an NAS100d. For an NAS100d which has been modified to bring out the serial port console, it is important to register that device first separately, to enable debugging of other device support. Signed-off-by: John Bowler <jbowler@acm.org> Signed-off-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
176 lines
4.1 KiB
C
176 lines
4.1 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 <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 = 0,
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.end = 0,
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.flags = IXP4XX_GPIO_LOW,
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},
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{
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.name = "ready", /* blue power led (off is flashing!) */
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.start = 15,
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.end = 15,
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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 = 3,
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.end = 3,
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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 ixp4xx_i2c_pins nas100d_i2c_gpio_pins = {
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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_controller = {
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.name = "IXP4XX-I2C",
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.id = 0,
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.dev.platform_data = &nas100d_i2c_gpio_pins,
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.num_resources = 0,
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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_controller,
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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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/* 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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