62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
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/*
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* Switch class driver
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*
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* Copyright (C) 2008 Google, Inc.
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* Author: Mike Lockwood <lockwood@android.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __LINUX_SWITCH_H__
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#define __LINUX_SWITCH_H__
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#include <linux/notifier.h>
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struct switch_dev {
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const char *name;
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struct device *dev;
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int index;
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int state;
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spinlock_t lock;
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int last_state_in_suspend;
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bool uevent_in_suspend;
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bool is_suspend;
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struct notifier_block pm_nb;
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ssize_t (*print_name)(struct switch_dev *sdev, char *buf);
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ssize_t (*print_state)(struct switch_dev *sdev, char *buf);
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};
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struct gpio_switch_platform_data {
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const char *name;
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unsigned gpio;
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/* if NULL, switch_dev.name will be printed */
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const char *name_on;
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const char *name_off;
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/* if NULL, "0" or "1" will be printed */
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const char *state_on;
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const char *state_off;
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};
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extern int switch_dev_register(struct switch_dev *sdev);
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extern void switch_dev_unregister(struct switch_dev *sdev);
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static inline int switch_get_state(struct switch_dev *sdev)
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{
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return sdev->state;
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}
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extern void switch_set_state(struct switch_dev *sdev, int state);
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#endif /* __LINUX_SWITCH_H__ */
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