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/*
* Atheros PB44 reference board support
*
* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/i2c/pcf857x.h>
#include "machtypes.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#define PB44_GPIO_I2C_SCL 0
#define PB44_GPIO_I2C_SDA 1
#define PB44_GPIO_EXP_BASE 16
#define PB44_GPIO_SW_RESET (PB44_GPIO_EXP_BASE + 6)
#define PB44_GPIO_SW_JUMP (PB44_GPIO_EXP_BASE + 8)
#define PB44_GPIO_LED_JUMP1 (PB44_GPIO_EXP_BASE + 9)
#define PB44_GPIO_LED_JUMP2 (PB44_GPIO_EXP_BASE + 10)
#define PB44_KEYS_POLL_INTERVAL 20 /* msecs */
#define PB44_KEYS_DEBOUNCE_INTERVAL (3 * PB44_KEYS_POLL_INTERVAL)
static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
.sda_pin = PB44_GPIO_I2C_SDA,
.scl_pin = PB44_GPIO_I2C_SCL,
};
static struct platform_device pb44_i2c_gpio_device = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &pb44_i2c_gpio_data,
}
};
static struct pcf857x_platform_data pb44_pcf857x_data = {
.gpio_base = PB44_GPIO_EXP_BASE,
};
static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
{
I2C_BOARD_INFO("pcf8575", 0x20),
.platform_data = &pb44_pcf857x_data,
},
};
static struct gpio_led pb44_leds_gpio[] __initdata = {
{
.name = "pb44:amber:jump1",
.gpio = PB44_GPIO_LED_JUMP1,
.active_low = 1,
}, {
.name = "pb44:green:jump2",
.gpio = PB44_GPIO_LED_JUMP2,
.active_low = 1,
},
};
static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
{
.desc = "soft_reset",
.type = EV_KEY,
.code = KEY_RESTART,
.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
.gpio = PB44_GPIO_SW_RESET,
.active_low = 1,
} , {
.desc = "jumpstart",
.type = EV_KEY,
.code = KEY_WPS_BUTTON,
.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
.gpio = PB44_GPIO_SW_JUMP,
.active_low = 1,
}
};
static void __init pb44_init(void)
{
i2c_register_board_info(0, pb44_i2c_board_info,
ARRAY_SIZE(pb44_i2c_board_info));
platform_device_register(&pb44_i2c_gpio_device);
ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
pb44_leds_gpio);
ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
ARRAY_SIZE(pb44_gpio_keys),
pb44_gpio_keys);
}
MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
pb44_init);
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