mirror of https://gitee.com/openkylin/linux.git
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
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/*
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* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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#ifndef __W1_H
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#define __W1_H
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#include <linux/w1.h>
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#include <linux/completion.h>
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#include <linux/mutex.h>
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#define W1_SLAVE_ACTIVE 0
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#define W1_SLAVE_DETACH 1
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/**
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* struct w1_async_cmd - execute callback from the w1_process kthread
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* @async_entry: link entry
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* @cb: callback function, must list_del and destroy this list before
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* returning
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*
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* When inserted into the w1_master async_list, w1_process will execute
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* the callback. Embed this into the structure with the command details.
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*/
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struct w1_async_cmd {
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struct list_head async_entry;
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void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd);
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};
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int w1_create_master_attributes(struct w1_master *master);
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void w1_destroy_master_attributes(struct w1_master *master);
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void w1_search(struct w1_master *dev, u8 search_type,
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w1_slave_found_callback cb);
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void w1_search_devices(struct w1_master *dev, u8 search_type,
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w1_slave_found_callback cb);
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/* call w1_unref_slave to release the reference counts w1_search_slave added */
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struct w1_slave *w1_search_slave(struct w1_reg_num *id);
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/*
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* decrements the reference on sl->master and sl, and cleans up if zero
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* returns the reference count after it has been decremented
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*/
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int w1_unref_slave(struct w1_slave *sl);
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void w1_slave_found(struct w1_master *dev, u64 rn);
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void w1_search_process_cb(struct w1_master *dev, u8 search_type,
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w1_slave_found_callback cb);
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struct w1_slave *w1_slave_search_device(struct w1_master *dev,
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struct w1_reg_num *rn);
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struct w1_master *w1_search_master_id(u32 id);
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/* Disconnect and reconnect devices in the given family. Used for finding
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* unclaimed devices after a family has been registered or releasing devices
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* after a family has been unregistered. Set attach to 1 when a new family
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* has just been registered, to 0 when it has been unregistered.
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*/
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void w1_reconnect_slaves(struct w1_family *f, int attach);
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int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn);
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/* 0 success, otherwise EBUSY */
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int w1_slave_detach(struct w1_slave *sl);
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void __w1_remove_master_device(struct w1_master *dev);
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void w1_family_put(struct w1_family *f);
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void __w1_family_get(struct w1_family *f);
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struct w1_family *w1_family_registered(u8 fid);
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extern struct device_driver w1_master_driver;
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extern struct device w1_master_device;
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extern int w1_max_slave_count;
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extern int w1_max_slave_ttl;
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extern struct list_head w1_masters;
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extern struct mutex w1_mlock;
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extern spinlock_t w1_flock;
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int w1_process_callbacks(struct w1_master *dev);
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int w1_process(void *data);
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#endif /* __W1_H */
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