diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/nas100d-setup.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/nas100d-setup.c | 174 |
1 files changed, 153 insertions, 21 deletions
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index 54d884fb2517..4cecae84837b 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -3,8 +3,14 @@ * * NAS 100d board-setup * - * based ixdp425-setup.c: + * 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> @@ -12,15 +18,22 @@ * */ -#include <linux/kernel.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/i2c-gpio.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/flash.h> +#include <asm/io.h> +#include <asm/gpio.h> static struct flash_platform_data nas100d_flash_data = { .map_name = "cfi_probe", @@ -39,35 +52,40 @@ static struct platform_device nas100d_flash = { .resource = &nas100d_flash_resource, }; -#ifdef CONFIG_LEDS_IXP4XX -static struct resource nas100d_led_resources[] = { +static struct i2c_board_info __initdata nas100d_i2c_board_info [] = { + { + I2C_BOARD_INFO("rtc-pcf8563", 0x51), + }, +}; + +static struct gpio_led nas100d_led_pins[] = { { .name = "wlan", /* green led */ - .start = 0, - .end = 0, - .flags = IXP4XX_GPIO_LOW, + .gpio = NAS100D_LED_WLAN_GPIO, + .active_low = true, }, { - .name = "ready", /* blue power led (off is flashing!) */ - .start = 15, - .end = 15, - .flags = IXP4XX_GPIO_LOW, + .name = "power", /* blue power led (off=flashing) */ + .gpio = NAS100D_LED_PWR_GPIO, + .active_low = true, }, { .name = "disk", /* yellow led */ - .start = 3, - .end = 3, - .flags = IXP4XX_GPIO_LOW, + .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 = "IXP4XX-GPIO-LED", + .name = "leds-gpio", .id = -1, - .num_resources = ARRAY_SIZE(nas100d_led_resources), - .resource = nas100d_led_resources, + .dev.platform_data = &nas100d_led_data, }; -#endif static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = { .sda_pin = NAS100D_SDA_PIN, @@ -125,12 +143,28 @@ static struct platform_device nas100d_uart = { .resource = nas100d_uart_resources, }; +/* Built-in 10/100 Ethernet MAC interfaces */ +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, + } +}; + static struct platform_device *nas100d_devices[] __initdata = { &nas100d_i2c_gpio, &nas100d_flash, -#ifdef CONFIG_LEDS_IXP4XX &nas100d_leds, -#endif + &nas100d_eth[0], }; static void nas100d_power_off(void) @@ -144,8 +178,63 @@ static void nas100d_power_off(void) gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH); } +/* 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(unsigned long data); +static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler, 0, 0); + +static void nas100d_power_handler(unsigned long data) +{ + /* 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_line_set(NAS100D_LED_PWR_GPIO, IXP4XX_GPIO_LOW); + } 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 void __init nas100d_init(void) { + DECLARE_MAC_BUF(mac_buf); + uint8_t __iomem *f; + int i; + ixp4xx_sys_init(); /* gpio 14 and 15 are _not_ clocks */ @@ -155,7 +244,8 @@ static void __init nas100d_init(void) nas100d_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; - pm_power_off = nas100d_power_off; + 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 @@ -165,6 +255,48 @@ static void __init nas100d_init(void) (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_DISABLED | IRQF_TRIGGER_LOW, + "NAS100D reset button", NULL) < 0) { + + printk(KERN_DEBUG "Reset Button IRQ %d not available\n", + gpio_to_irq(NAS100D_RB_GPIO)); + } + + /* 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. + */ + + /* Make sure that the power button GPIO is set up as an input */ + gpio_line_config(NAS100D_PB_GPIO, IXP4XX_GPIO_IN); + + /* 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)); + + /* + * 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 %s for port 0\n", + print_mac(mac_buf, nas100d_plat_eth[0].hwaddr)); + } MACHINE_START(NAS100D, "Iomega NAS 100d") |
