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939fc83229
The helper macro module_w1_family can be used in module drivers that only register a w1 driver in their module init functions. Add this macro and use it in all applicable drivers. Link: http://lkml.kernel.org/r/20160531204313.20979-2-afd@ti.com Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/*
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* w1_family.h
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*
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* Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
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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_FAMILY_H
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#define __W1_FAMILY_H
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/atomic.h>
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#define W1_FAMILY_DEFAULT 0
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#define W1_FAMILY_BQ27000 0x01
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#define W1_FAMILY_SMEM_01 0x01
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#define W1_FAMILY_SMEM_81 0x81
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#define W1_THERM_DS18S20 0x10
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#define W1_FAMILY_DS28E04 0x1C
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#define W1_COUNTER_DS2423 0x1D
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#define W1_THERM_DS1822 0x22
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#define W1_EEPROM_DS2433 0x23
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#define W1_THERM_DS18B20 0x28
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#define W1_FAMILY_DS2408 0x29
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#define W1_EEPROM_DS2431 0x2D
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#define W1_FAMILY_DS2760 0x30
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#define W1_FAMILY_DS2780 0x32
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#define W1_FAMILY_DS2413 0x3A
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#define W1_FAMILY_DS2406 0x12
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#define W1_THERM_DS1825 0x3B
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#define W1_FAMILY_DS2781 0x3D
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#define W1_THERM_DS28EA00 0x42
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#define MAXNAMELEN 32
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struct w1_slave;
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/**
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* struct w1_family_ops - operations for a family type
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* @add_slave: add_slave
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* @remove_slave: remove_slave
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* @groups: sysfs group
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*/
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struct w1_family_ops
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{
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int (* add_slave)(struct w1_slave *);
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void (* remove_slave)(struct w1_slave *);
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const struct attribute_group **groups;
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};
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/**
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* struct w1_family - reference counted family structure.
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* @family_entry: family linked list
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* @fid: 8 bit family identifier
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* @fops: operations for this family
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* @refcnt: reference counter
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*/
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struct w1_family
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{
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struct list_head family_entry;
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u8 fid;
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struct w1_family_ops *fops;
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atomic_t refcnt;
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};
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extern spinlock_t w1_flock;
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void w1_family_put(struct w1_family *);
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void __w1_family_get(struct w1_family *);
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struct w1_family * w1_family_registered(u8);
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void w1_unregister_family(struct w1_family *);
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int w1_register_family(struct w1_family *);
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/**
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* module_w1_driver() - Helper macro for registering a 1-Wire families
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* @__w1_family: w1_family struct
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*
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* Helper macro for 1-Wire families which do not do anything special in module
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* init/exit. This eliminates a lot of boilerplate. Each module may only
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* use this macro once, and calling it replaces module_init() and module_exit()
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*/
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#define module_w1_family(__w1_family) \
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module_driver(__w1_family, w1_register_family, \
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w1_unregister_family)
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#endif /* __W1_FAMILY_H */
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