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* External connector (extcon) class generic GPIO driver
* Copyright (C) 2012 Samsung Electronics
* Author: MyungJoo Ham <>
* based on switch class driver
* Copyright (C) 2008 Google, Inc.
* Author: Mike Lockwood <>
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
#ifndef __EXTCON_GPIO_H__
#define __EXTCON_GPIO_H__ __FILE__
#include <linux/extcon.h>
* struct gpio_extcon_platform_data - A simple GPIO-controlled extcon device.
* @name: The name of this GPIO extcon device.
* @gpio: Corresponding GPIO.
* @gpio_active_low: Boolean describing whether gpio active state is 1 or 0
* If true, low state of gpio means active.
* If false, high state of gpio means active.
* @debounce: Debounce time for GPIO IRQ in ms.
* @irq_flags: IRQ Flags (e.g., IRQF_TRIGGER_LOW).
* @state_on: print_state is overriden with state_on if attached.
* If NULL, default method of extcon class is used.
* @state_off: print_state is overriden with state_off if detached.
* If NUll, default method of extcon class is used.
* @check_on_resume: Boolean describing whether to check the state of gpio
* while resuming from sleep.
* Note that in order for state_on or state_off to be valid, both state_on
* and state_off should be not NULL. If at least one of them is NULL,
* the print_state is not overriden.
struct gpio_extcon_platform_data {
const char *name;
unsigned gpio;
bool gpio_active_low;
unsigned long debounce;
unsigned long irq_flags;
/* if NULL, "0" or "1" will be printed */
const char *state_on;
const char *state_off;
bool check_on_resume;
#endif /* __EXTCON_GPIO_H__ */