146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/*
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* w1.h
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*
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* Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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*
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __W1_H
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#define __W1_H
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struct w1_reg_num
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{
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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__u64 family:8,
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id:48,
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crc:8;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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__u64 crc:8,
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id:48,
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family:8;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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};
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#ifdef __KERNEL__
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#include <linux/completion.h>
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#include <linux/device.h>
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#include <net/sock.h>
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#include <asm/semaphore.h>
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#include "w1_family.h"
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#define W1_MAXNAMELEN 32
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#define W1_SLAVE_DATA_SIZE 128
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#define W1_SEARCH 0xF0
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#define W1_CONDITIONAL_SEARCH 0xEC
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#define W1_CONVERT_TEMP 0x44
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#define W1_SKIP_ROM 0xCC
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#define W1_READ_SCRATCHPAD 0xBE
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#define W1_READ_ROM 0x33
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#define W1_READ_PSUPPLY 0xB4
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#define W1_MATCH_ROM 0x55
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#define W1_SLAVE_ACTIVE (1<<0)
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struct w1_slave
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{
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struct module *owner;
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unsigned char name[W1_MAXNAMELEN];
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struct list_head w1_slave_entry;
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struct w1_reg_num reg_num;
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atomic_t refcnt;
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u8 rom[9];
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u32 flags;
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int ttl;
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struct w1_master *master;
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struct w1_family *family;
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struct device dev;
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struct completion dev_released;
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struct bin_attribute attr_bin;
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struct device_attribute attr_name, attr_val;
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};
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typedef void (* w1_slave_found_callback)(unsigned long, u64);
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struct w1_bus_master
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{
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unsigned long data;
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u8 (*read_bit)(unsigned long);
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void (*write_bit)(unsigned long, u8);
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u8 (*read_byte)(unsigned long);
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void (*write_byte)(unsigned long, u8);
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u8 (*read_block)(unsigned long, u8 *, int);
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void (*write_block)(unsigned long, u8 *, int);
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u8 (*touch_bit)(unsigned long, u8);
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u8 (*reset_bus)(unsigned long);
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void (*search)(unsigned long, w1_slave_found_callback);
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};
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struct w1_master
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{
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struct list_head w1_master_entry;
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struct module *owner;
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unsigned char name[W1_MAXNAMELEN];
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struct list_head slist;
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int max_slave_count, slave_count;
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unsigned long attempts;
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int slave_ttl;
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int initialized;
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u32 id;
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atomic_t refcnt;
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void *priv;
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int priv_size;
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int need_exit;
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pid_t kpid;
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struct semaphore mutex;
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struct device_driver *driver;
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struct device dev;
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struct completion dev_released;
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struct completion dev_exited;
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struct w1_bus_master *bus_master;
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u32 seq, groups;
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struct sock *nls;
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};
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int w1_create_master_attributes(struct w1_master *);
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void w1_destroy_master_attributes(struct w1_master *);
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void w1_search(struct w1_master *dev);
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#endif /* __KERNEL__ */
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#endif /* __W1_H */
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