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Diffstat (limited to 'include/linux/extcon/extcon-gpio.h')
| -rw-r--r-- | include/linux/extcon/extcon-gpio.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h new file mode 100644 index 000000000..0b17ad43f --- /dev/null +++ b/include/linux/extcon/extcon-gpio.h @@ -0,0 +1,59 @@ +/* + * External connector (extcon) class generic GPIO driver + * + * Copyright (C) 2012 Samsung Electronics + * Author: MyungJoo Ham <myungjoo.ham@samsung.com> + * + * based on switch class driver + * Copyright (C) 2008 Google, Inc. + * Author: Mike Lockwood <lockwood@android.com> + * + * 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 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * 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__ */ |