- 根目录:
- arch
- arm
- mach-ixp4xx
- nas100d-setup.c
#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/i2c-gpio.h>
#include <linux/io.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#define NAS100D_SDA_PIN 5
#define NAS100D_SCL_PIN 6
#define NAS100D_PB_GPIO 14
#define NAS100D_RB_GPIO 4
#define NAS100D_PO_GPIO 12
#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",
.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 i2c_gpio_platform_data nas100d_i2c_gpio_data = {
.sda_pin = NAS100D_SDA_PIN,
.scl_pin = NAS100D_SCL_PIN,
};
static struct platform_device nas100d_i2c_gpio = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &nas100d_i2c_gpio_data,
},
};
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,
};
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,
&nas100d_leds,
&nas100d_eth[0],
};
static void nas100d_power_off(void)
{
gpio_direction_output(NAS100D_PO_GPIO, 1);
}
static int power_button_countdown;
#define PBUTTON_HOLDDOWN_COUNT 4
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)
{
if (gpio_get_value(NAS100D_PB_GPIO)) {
if (power_button_countdown > 0)
power_button_countdown--;
} else {
if (power_button_countdown == 0) {
ctrl_alt_del();
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)
{
machine_power_off();
return IRQ_HANDLED;
}
static int __init nas100d_gpio_init(void)
{
if (!machine_is_nas100d())
return 0;
gpio_request(NAS100D_PO_GPIO, "power off");
gpio_request(NAS100D_PB_GPIO, "power button");
gpio_direction_input(NAS100D_PB_GPIO);
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();
*IXP4XX_GPIO_GPCLKR = 0;
nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
nas100d_flash_resource.end =
IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
i2c_register_board_info(0, nas100d_i2c_board_info,
ARRAY_SIZE(nas100d_i2c_board_info));
(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));
}
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")
.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
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