+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/arm/mach-ixp4xx/nas100d-setup.c
- *
- * NAS 100d board-setup
- *
- * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
- *
- * based on ixdp425-setup.c:
- * Copyright (C) 2003-2004 MontaVista Software, Inc.
- * based on nas100d-power.c:
- * Copyright (C) 2005 Tower Technologies
- * based on nas100d-io.c
- * Copyright (C) 2004 Karen Spearel
- *
- * Author: Alessandro Zummo <a.zummo@towertech.it>
- * Author: Rod Whitby <rod@whitby.id.au>
- * Maintainers: http://www.nslu2-linux.org/
- *
- */
-#include <linux/gpio.h>
-#include <linux/if_ether.h>
-#include <linux/irq.h>
-#include <linux/jiffies.h>
-#include <linux/timer.h>
-#include <linux/serial.h>
-#include <linux/serial_8250.h>
-#include <linux/leds.h>
-#include <linux/reboot.h>
-#include <linux/i2c.h>
-#include <linux/gpio/machine.h>
-#include <linux/io.h>
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/flash.h>
-#include <mach/hardware.h>
-
-#include "irqs.h"
-
-#define NAS100D_SDA_PIN 5
-#define NAS100D_SCL_PIN 6
-
-/* Buttons */
-#define NAS100D_PB_GPIO 14 /* power button */
-#define NAS100D_RB_GPIO 4 /* reset button */
-
-/* Power control */
-#define NAS100D_PO_GPIO 12 /* power off */
-
-/* LEDs */
-#define NAS100D_LED_WLAN_GPIO 0
-#define NAS100D_LED_DISK_GPIO 3
-#define NAS100D_LED_PWR_GPIO 15
-
-static struct flash_platform_data nas100d_flash_data = {
- .map_name = "cfi_probe",
- .width = 2,
-};
-
-static struct resource nas100d_flash_resource = {
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device nas100d_flash = {
- .name = "IXP4XX-Flash",
- .id = 0,
- .dev.platform_data = &nas100d_flash_data,
- .num_resources = 1,
- .resource = &nas100d_flash_resource,
-};
-
-static struct i2c_board_info __initdata nas100d_i2c_board_info [] = {
- {
- I2C_BOARD_INFO("pcf8563", 0x51),
- },
-};
-
-static struct gpio_led nas100d_led_pins[] = {
- {
- .name = "nas100d:green:wlan",
- .gpio = NAS100D_LED_WLAN_GPIO,
- .active_low = true,
- },
- {
- .name = "nas100d:blue:power", /* (off=flashing) */
- .gpio = NAS100D_LED_PWR_GPIO,
- .active_low = true,
- },
- {
- .name = "nas100d:yellow:disk",
- .gpio = NAS100D_LED_DISK_GPIO,
- .active_low = true,
- },
-};
-
-static struct gpio_led_platform_data nas100d_led_data = {
- .num_leds = ARRAY_SIZE(nas100d_led_pins),
- .leds = nas100d_led_pins,
-};
-
-static struct platform_device nas100d_leds = {
- .name = "leds-gpio",
- .id = -1,
- .dev.platform_data = &nas100d_led_data,
-};
-
-static struct gpiod_lookup_table nas100d_i2c_gpiod_table = {
- .dev_id = "i2c-gpio.0",
- .table = {
- GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SDA_PIN,
- NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SCL_PIN,
- NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- },
-};
-
-static struct platform_device nas100d_i2c_gpio = {
- .name = "i2c-gpio",
- .id = 0,
- .dev = {
- .platform_data = NULL,
- },
-};
-
-static struct resource nas100d_uart_resources[] = {
- {
- .start = IXP4XX_UART1_BASE_PHYS,
- .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IXP4XX_UART2_BASE_PHYS,
- .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
- .flags = IORESOURCE_MEM,
- }
-};
-
-static struct plat_serial8250_port nas100d_uart_data[] = {
- {
- .mapbase = IXP4XX_UART1_BASE_PHYS,
- .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
- .irq = IRQ_IXP4XX_UART1,
- .flags = UPF_BOOT_AUTOCONF,
- .iotype = UPIO_MEM,
- .regshift = 2,
- .uartclk = IXP4XX_UART_XTAL,
- },
- {
- .mapbase = IXP4XX_UART2_BASE_PHYS,
- .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
- .irq = IRQ_IXP4XX_UART2,
- .flags = UPF_BOOT_AUTOCONF,
- .iotype = UPIO_MEM,
- .regshift = 2,
- .uartclk = IXP4XX_UART_XTAL,
- },
- { }
-};
-
-static struct platform_device nas100d_uart = {
- .name = "serial8250",
- .id = PLAT8250_DEV_PLATFORM,
- .dev.platform_data = nas100d_uart_data,
- .num_resources = 2,
- .resource = nas100d_uart_resources,
-};
-
-/* Built-in 10/100 Ethernet MAC interfaces */
-static struct resource nas100d_eth_resources[] = {
- {
- .start = IXP4XX_EthB_BASE_PHYS,
- .end = IXP4XX_EthB_BASE_PHYS + 0x0fff,
- .flags = IORESOURCE_MEM,
- },
-};
-
-static struct eth_plat_info nas100d_plat_eth[] = {
- {
- .phy = 0,
- .rxq = 3,
- .txreadyq = 20,
- }
-};
-
-static struct platform_device nas100d_eth[] = {
- {
- .name = "ixp4xx_eth",
- .id = IXP4XX_ETH_NPEB,
- .dev.platform_data = nas100d_plat_eth,
- .num_resources = ARRAY_SIZE(nas100d_eth_resources),
- .resource = nas100d_eth_resources,
- }
-};
-
-static struct platform_device *nas100d_devices[] __initdata = {
- &nas100d_i2c_gpio,
- &nas100d_flash,
- &nas100d_leds,
- &nas100d_eth[0],
-};
-
-static void nas100d_power_off(void)
-{
- /* This causes the box to drop the power and go dead. */
-
- /* enable the pwr cntl gpio and assert power off */
- gpio_direction_output(NAS100D_PO_GPIO, 1);
-}
-
-/* This is used to make sure the power-button pusher is serious. The button
- * must be held until the value of this counter reaches zero.
- */
-static int power_button_countdown;
-
-/* Must hold the button down for at least this many counts to be processed */
-#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
-
-static void nas100d_power_handler(struct timer_list *unused);
-static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler);
-
-static void nas100d_power_handler(struct timer_list *unused)
-{
- /* This routine is called twice per second to check the
- * state of the power button.
- */
-
- if (gpio_get_value(NAS100D_PB_GPIO)) {
-
- /* IO Pin is 1 (button pushed) */
- if (power_button_countdown > 0)
- power_button_countdown--;
-
- } else {
-
- /* Done on button release, to allow for auto-power-on mods. */
- if (power_button_countdown == 0) {
- /* Signal init to do the ctrlaltdel action,
- * this will bypass init if it hasn't started
- * and do a kernel_restart.
- */
- ctrl_alt_del();
-
- /* Change the state of the power LED to "blink" */
- gpio_set_value(NAS100D_LED_PWR_GPIO, 0);
- } else {
- power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
- }
- }
-
- mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
-}
-
-static irqreturn_t nas100d_reset_handler(int irq, void *dev_id)
-{
- /* This is the paper-clip reset, it shuts the machine down directly. */
- machine_power_off();
-
- return IRQ_HANDLED;
-}
-
-static int __init nas100d_gpio_init(void)
-{
- if (!machine_is_nas100d())
- return 0;
-
- /*
- * The power button on the Iomega NAS100d is on GPIO 14, but
- * it cannot handle interrupts on that GPIO line. So we'll
- * have to poll it with a kernel timer.
- */
-
- /* Request the power off GPIO */
- gpio_request(NAS100D_PO_GPIO, "power off");
-
- /* Make sure that the power button GPIO is set up as an input */
- gpio_request(NAS100D_PB_GPIO, "power button");
- gpio_direction_input(NAS100D_PB_GPIO);
-
- /* Set the initial value for the power button IRQ handler */
- power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
-
- mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
-
- return 0;
-}
-device_initcall(nas100d_gpio_init);
-
-static void __init nas100d_init(void)
-{
- uint8_t __iomem *f;
- int i;
-
- ixp4xx_sys_init();
-
- nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
- nas100d_flash_resource.end =
- IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
-
- gpiod_add_lookup_table(&nas100d_i2c_gpiod_table);
- i2c_register_board_info(0, nas100d_i2c_board_info,
- ARRAY_SIZE(nas100d_i2c_board_info));
-
- /*
- * This is only useful on a modified machine, but it is valuable
- * to have it first in order to see debug messages, and so that
- * it does *not* get removed if platform_add_devices fails!
- */
- (void)platform_device_register(&nas100d_uart);
-
- platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
-
- pm_power_off = nas100d_power_off;
-
- if (request_irq(gpio_to_irq(NAS100D_RB_GPIO), &nas100d_reset_handler,
- IRQF_TRIGGER_LOW, "NAS100D reset button", NULL) < 0) {
-
- printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
- gpio_to_irq(NAS100D_RB_GPIO));
- }
-
- /*
- * Map in a portion of the flash and read the MAC address.
- * Since it is stored in BE in the flash itself, we need to
- * byteswap it if we're in LE mode.
- */
- f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x1000000);
- if (f) {
- for (i = 0; i < 6; i++)
-#ifdef __ARMEB__
- nas100d_plat_eth[0].hwaddr[i] = readb(f + 0xFC0FD8 + i);
-#else
- nas100d_plat_eth[0].hwaddr[i] = readb(f + 0xFC0FD8 + (i^3));
-#endif
- iounmap(f);
- }
- printk(KERN_INFO "NAS100D: Using MAC address %pM for port 0\n",
- nas100d_plat_eth[0].hwaddr);
-
-}
-
-MACHINE_START(NAS100D, "Iomega NAS 100d")
- /* Maintainer: www.nslu2-linux.org */
- .atag_offset = 0x100,
- .map_io = ixp4xx_map_io,
- .init_early = ixp4xx_init_early,
- .init_irq = ixp4xx_init_irq,
- .init_time = ixp4xx_timer_init,
- .init_machine = nas100d_init,
-#if defined(CONFIG_PCI)
- .dma_zone_size = SZ_64M,
-#endif
- .restart = ixp4xx_restart,
-MACHINE_END
projects / linux.git / commitdiff