1 files changed, 137 insertions, 0 deletions
diff --git a/kernel/power/tuxonice_sysfs.h b/kernel/power/tuxonice_sysfs.h
new file mode 100644
index 000000000..1de954ce1
--- /dev/null
+++ b/kernel/power/tuxonice_sysfs.h
@@ -0,0 +1,137 @@
+/*
+ * kernel/power/tuxonice_sysfs.h
+ *
+ * Copyright (C) 2004-2015 Nigel Cunningham (nigel at nigelcunningham com au)
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/sysfs.h>
+
+struct toi_sysfs_data {
+        struct attribute attr;
+        int type;
+        int flags;
+        union {
+                struct {
+                        unsigned long *bit_vector;
+                        int bit;
+                } bit;
+                struct {
+                        int *variable;
+                        int minimum;
+                        int maximum;
+                } integer;
+                struct {
+                        long *variable;
+                        long minimum;
+                        long maximum;
+                } a_long;
+                struct {
+                        unsigned long *variable;
+                        unsigned long minimum;
+                        unsigned long maximum;
+                } ul;
+                struct {
+                        char *variable;
+                        int max_length;
+                } string;
+                struct {
+                        int (*read_sysfs) (const char *buffer, int count);
+                        int (*write_sysfs) (const char *buffer, int count);
+                        void *data;
+                } special;
+        } data;
+
+        /* Side effects routine. Used, eg, for reparsing the
+         * resume= entry when it changes */
+        void (*write_side_effect) (void);
+        struct list_head sysfs_data_list;
+};
+
+enum {
+        TOI_SYSFS_DATA_NONE = 1,
+        TOI_SYSFS_DATA_CUSTOM,
+        TOI_SYSFS_DATA_BIT,
+        TOI_SYSFS_DATA_INTEGER,
+        TOI_SYSFS_DATA_UL,
+        TOI_SYSFS_DATA_LONG,
+        TOI_SYSFS_DATA_STRING
+};
+
+#define SYSFS_WRITEONLY 0200
+#define SYSFS_READONLY 0444
+#define SYSFS_RW 0644
+
+#define SYSFS_BIT(_name, _mode, _ul, _bit, _flags) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_BIT, \
+        .flags = _flags, \
+        .data = { .bit = { .bit_vector = _ul, .bit = _bit } } }
+
+#define SYSFS_INT(_name, _mode, _int, _min, _max, _flags, _wse) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_INTEGER, \
+        .flags = _flags, \
+        .data = { .integer = { .variable = _int, .minimum = _min, \
+                        .maximum = _max } }, \
+        .write_side_effect = _wse }
+
+#define SYSFS_UL(_name, _mode, _ul, _min, _max, _flags) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_UL, \
+        .flags = _flags, \
+        .data = { .ul = { .variable = _ul, .minimum = _min, \
+                        .maximum = _max } } }
+
+#define SYSFS_LONG(_name, _mode, _long, _min, _max, _flags) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_LONG, \
+        .flags = _flags, \
+        .data = { .a_long = { .variable = _long, .minimum = _min, \
+                        .maximum = _max } } }
+
+#define SYSFS_STRING(_name, _mode, _string, _max_len, _flags, _wse) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_STRING, \
+        .flags = _flags, \
+        .data = { .string = { .variable = _string, .max_length = _max_len } }, \
+        .write_side_effect = _wse }
+
+#define SYSFS_CUSTOM(_name, _mode, _read, _write, _flags, _wse) { \
+        .attr = {.name  = _name , .mode   = _mode }, \
+        .type = TOI_SYSFS_DATA_CUSTOM, \
+        .flags = _flags, \
+        .data = { .special = { .read_sysfs = _read, .write_sysfs = _write } }, \
+        .write_side_effect = _wse }
+
+#define SYSFS_NONE(_name, _wse) { \
+        .attr = {.name  = _name , .mode   = SYSFS_WRITEONLY }, \
+        .type = TOI_SYSFS_DATA_NONE, \
+        .write_side_effect = _wse, \
+}
+
+/* Flags */
+#define SYSFS_NEEDS_SM_FOR_READ 1
+#define SYSFS_NEEDS_SM_FOR_WRITE 2
+#define SYSFS_HIBERNATE 4
+#define SYSFS_RESUME 8
+#define SYSFS_HIBERNATE_OR_RESUME (SYSFS_HIBERNATE | SYSFS_RESUME)
+#define SYSFS_HIBERNATING (SYSFS_HIBERNATE | SYSFS_NEEDS_SM_FOR_WRITE)
+#define SYSFS_RESUMING (SYSFS_RESUME | SYSFS_NEEDS_SM_FOR_WRITE)
+#define SYSFS_NEEDS_SM_FOR_BOTH \
+ (SYSFS_NEEDS_SM_FOR_READ | SYSFS_NEEDS_SM_FOR_WRITE)
+
+int toi_register_sysfs_file(struct kobject *kobj,
+                struct toi_sysfs_data *toi_sysfs_data);
+void toi_unregister_sysfs_file(struct kobject *kobj,
+                struct toi_sysfs_data *toi_sysfs_data);
+
+extern struct kobject *tuxonice_kobj;
+
+struct kobject *make_toi_sysdir(char *name);
+void remove_toi_sysdir(struct kobject *obj);
+extern void toi_cleanup_sysfs(void);
+
+extern int toi_sysfs_init(void);
+extern void toi_sysfs_exit(void);