Stricted
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/*
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* kernel/power/tuxonice_sysfs.h
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*
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* Copyright (C) 2004-2010 Nigel Cunningham (nigel at tuxonice net)
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*
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* This file is released under the GPLv2.
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*/
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#include <linux/sysfs.h>
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struct toi_sysfs_data {
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struct attribute attr;
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int type;
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int flags;
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union {
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struct {
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unsigned long *bit_vector;
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int bit;
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} bit;
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struct {
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int *variable;
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int minimum;
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int maximum;
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} integer;
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struct {
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long *variable;
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long minimum;
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long maximum;
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} a_long;
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struct {
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unsigned long *variable;
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unsigned long minimum;
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unsigned long maximum;
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} ul;
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struct {
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char *variable;
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int max_length;
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} string;
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struct {
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int (*read_sysfs) (const char *buffer, int count);
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int (*write_sysfs) (const char *buffer, int count);
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void *data;
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} special;
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} data;
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/* Side effects routine. Used, eg, for reparsing the
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* resume= entry when it changes */
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void (*write_side_effect) (void);
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struct list_head sysfs_data_list;
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};
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enum {
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TOI_SYSFS_DATA_NONE = 1,
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TOI_SYSFS_DATA_CUSTOM,
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TOI_SYSFS_DATA_BIT,
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TOI_SYSFS_DATA_INTEGER,
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TOI_SYSFS_DATA_UL,
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TOI_SYSFS_DATA_LONG,
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TOI_SYSFS_DATA_STRING
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};
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#define SYSFS_WRITEONLY 0200
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#define SYSFS_READONLY 0444
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#define SYSFS_RW 0644
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#define SYSFS_BIT(_name, _mode, _ul, _bit, _flags) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_BIT, \
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.flags = _flags, \
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.data = { .bit = { .bit_vector = _ul, .bit = _bit } } }
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#define SYSFS_INT(_name, _mode, _int, _min, _max, _flags, _wse) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_INTEGER, \
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.flags = _flags, \
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.data = { .integer = { .variable = _int, .minimum = _min, \
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.maximum = _max } }, \
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.write_side_effect = _wse }
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#define SYSFS_UL(_name, _mode, _ul, _min, _max, _flags) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_UL, \
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.flags = _flags, \
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.data = { .ul = { .variable = _ul, .minimum = _min, \
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.maximum = _max } } }
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#define SYSFS_LONG(_name, _mode, _long, _min, _max, _flags) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_LONG, \
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.flags = _flags, \
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.data = { .a_long = { .variable = _long, .minimum = _min, \
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.maximum = _max } } }
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#define SYSFS_STRING(_name, _mode, _string, _max_len, _flags, _wse) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_STRING, \
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.flags = _flags, \
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.data = { .string = { .variable = _string, .max_length = _max_len } }, \
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.write_side_effect = _wse }
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#define SYSFS_CUSTOM(_name, _mode, _read, _write, _flags, _wse) { \
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.attr = {.name = _name , .mode = _mode }, \
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.type = TOI_SYSFS_DATA_CUSTOM, \
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.flags = _flags, \
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.data = { .special = { .read_sysfs = _read, .write_sysfs = _write } }, \
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.write_side_effect = _wse }
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#define SYSFS_NONE(_name, _wse) { \
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.attr = {.name = _name , .mode = SYSFS_WRITEONLY }, \
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.type = TOI_SYSFS_DATA_NONE, \
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.write_side_effect = _wse, \
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}
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/* Flags */
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#define SYSFS_NEEDS_SM_FOR_READ 1
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#define SYSFS_NEEDS_SM_FOR_WRITE 2
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#define SYSFS_HIBERNATE 4
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#define SYSFS_RESUME 8
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#define SYSFS_HIBERNATE_OR_RESUME (SYSFS_HIBERNATE | SYSFS_RESUME)
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#define SYSFS_HIBERNATING (SYSFS_HIBERNATE | SYSFS_NEEDS_SM_FOR_WRITE)
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#define SYSFS_RESUMING (SYSFS_RESUME | SYSFS_NEEDS_SM_FOR_WRITE)
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#define SYSFS_NEEDS_SM_FOR_BOTH \
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(SYSFS_NEEDS_SM_FOR_READ | SYSFS_NEEDS_SM_FOR_WRITE)
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int toi_register_sysfs_file(struct kobject *kobj, struct toi_sysfs_data *toi_sysfs_data);
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void toi_unregister_sysfs_file(struct kobject *kobj, struct toi_sysfs_data *toi_sysfs_data);
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extern struct kobject *tuxonice_kobj;
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struct kobject *make_toi_sysdir(char *name);
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void remove_toi_sysdir(struct kobject *obj);
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extern void toi_cleanup_sysfs(void);
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extern int toi_sysfs_init(void);
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extern void toi_sysfs_exit(void);
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