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1/*
2 * External connector (extcon) class generic GPIO driver
3 *
4 * Copyright (C) 2012 Samsung Electronics
5 * Author: MyungJoo Ham <myungjoo.ham@samsung.com>
6 *
7 * based on switch class driver
8 * Copyright (C) 2008 Google, Inc.
9 * Author: Mike Lockwood <lockwood@android.com>
10 *
11 * This software is licensed under the terms of the GNU General Public
12 * License version 2, as published by the Free Software Foundation, and
13 * may be copied, distributed, and modified under those terms.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20*/
21#ifndef __EXTCON_GPIO_H__
22#define __EXTCON_GPIO_H__ __FILE__
23
24#include <linux/extcon.h>
25
26/**
27 * struct gpio_extcon_platform_data - A simple GPIO-controlled extcon device.
28 * @name: The name of this GPIO extcon device.
29 * @gpio: Corresponding GPIO.
30 * @gpio_active_low: Boolean describing whether gpio active state is 1 or 0
31 * If true, low state of gpio means active.
32 * If false, high state of gpio means active.
33 * @debounce: Debounce time for GPIO IRQ in ms.
34 * @irq_flags: IRQ Flags (e.g., IRQF_TRIGGER_LOW).
35 * @state_on: print_state is overriden with state_on if attached.
36 * If NULL, default method of extcon class is used.
37 * @state_off: print_state is overriden with state_on if detached.
38 * If NUll, default method of extcon class is used.
39 *
40 * Note that in order for state_on or state_off to be valid, both state_on
41 * and state_off should be not NULL. If at least one of them is NULL,
42 * the print_state is not overriden.
43 */
44struct gpio_extcon_platform_data {
45 const char *name;
46 unsigned gpio;
47 bool gpio_active_low;
48 unsigned long debounce;
49 unsigned long irq_flags;
50
51 /* if NULL, "0" or "1" will be printed */
52 const char *state_on;
53 const char *state_off;
54};
55
56#endif /* __EXTCON_GPIO_H__ */