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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /kernel/power/tuxonice_sysfs.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'kernel/power/tuxonice_sysfs.c')
-rw-r--r--kernel/power/tuxonice_sysfs.c333
1 files changed, 0 insertions, 333 deletions
diff --git a/kernel/power/tuxonice_sysfs.c b/kernel/power/tuxonice_sysfs.c
deleted file mode 100644
index 79c9315b6..000000000
--- a/kernel/power/tuxonice_sysfs.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * kernel/power/tuxonice_sysfs.c
- *
- * Copyright (C) 2002-2015 Nigel Cunningham (nigel at nigelcunningham com au)
- *
- * This file is released under the GPLv2.
- *
- * This file contains support for sysfs entries for tuning TuxOnIce.
- *
- * We have a generic handler that deals with the most common cases, and
- * hooks for special handlers to use.
- */
-
-#include <linux/suspend.h>
-
-#include "tuxonice_sysfs.h"
-#include "tuxonice.h"
-#include "tuxonice_storage.h"
-#include "tuxonice_alloc.h"
-
-static int toi_sysfs_initialised;
-
-static void toi_initialise_sysfs(void);
-
-static struct toi_sysfs_data sysfs_params[];
-
-#define to_sysfs_data(_attr) container_of(_attr, struct toi_sysfs_data, attr)
-
-static void toi_main_wrapper(void)
-{
- toi_try_hibernate();
-}
-
-static ssize_t toi_attr_show(struct kobject *kobj, struct attribute *attr,
- char *page)
-{
- struct toi_sysfs_data *sysfs_data = to_sysfs_data(attr);
- int len = 0;
- int full_prep = sysfs_data->flags & SYSFS_NEEDS_SM_FOR_READ;
-
- if (full_prep && toi_start_anything(0))
- return -EBUSY;
-
- if (sysfs_data->flags & SYSFS_NEEDS_SM_FOR_READ)
- toi_prepare_usm();
-
- switch (sysfs_data->type) {
- case TOI_SYSFS_DATA_CUSTOM:
- len = (sysfs_data->data.special.read_sysfs) ?
- (sysfs_data->data.special.read_sysfs)(page, PAGE_SIZE)
- : 0;
- break;
- case TOI_SYSFS_DATA_BIT:
- len = sprintf(page, "%d\n",
- -test_bit(sysfs_data->data.bit.bit,
- sysfs_data->data.bit.bit_vector));
- break;
- case TOI_SYSFS_DATA_INTEGER:
- len = sprintf(page, "%d\n",
- *(sysfs_data->data.integer.variable));
- break;
- case TOI_SYSFS_DATA_LONG:
- len = sprintf(page, "%ld\n",
- *(sysfs_data->data.a_long.variable));
- break;
- case TOI_SYSFS_DATA_UL:
- len = sprintf(page, "%lu\n",
- *(sysfs_data->data.ul.variable));
- break;
- case TOI_SYSFS_DATA_STRING:
- len = sprintf(page, "%s\n",
- sysfs_data->data.string.variable);
- break;
- }
-
- if (sysfs_data->flags & SYSFS_NEEDS_SM_FOR_READ)
- toi_cleanup_usm();
-
- if (full_prep)
- toi_finish_anything(0);
-
- return len;
-}
-
-#define BOUND(_variable, _type) do { \
- if (*_variable < sysfs_data->data._type.minimum) \
- *_variable = sysfs_data->data._type.minimum; \
- else if (*_variable > sysfs_data->data._type.maximum) \
- *_variable = sysfs_data->data._type.maximum; \
-} while (0)
-
-static ssize_t toi_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *my_buf, size_t count)
-{
- int assigned_temp_buffer = 0, result = count;
- struct toi_sysfs_data *sysfs_data = to_sysfs_data(attr);
-
- if (toi_start_anything((sysfs_data->flags & SYSFS_HIBERNATE_OR_RESUME)))
- return -EBUSY;
-
- ((char *) my_buf)[count] = 0;
-
- if (sysfs_data->flags & SYSFS_NEEDS_SM_FOR_WRITE)
- toi_prepare_usm();
-
- switch (sysfs_data->type) {
- case TOI_SYSFS_DATA_CUSTOM:
- if (sysfs_data->data.special.write_sysfs)
- result = (sysfs_data->data.special.write_sysfs)(my_buf,
- count);
- break;
- case TOI_SYSFS_DATA_BIT:
- {
- unsigned long value;
- result = kstrtoul(my_buf, 0, &value);
- if (result)
- break;
- if (value)
- set_bit(sysfs_data->data.bit.bit,
- (sysfs_data->data.bit.bit_vector));
- else
- clear_bit(sysfs_data->data.bit.bit,
- (sysfs_data->data.bit.bit_vector));
- }
- break;
- case TOI_SYSFS_DATA_INTEGER:
- {
- long temp;
- result = kstrtol(my_buf, 0, &temp);
- if (result)
- break;
- *(sysfs_data->data.integer.variable) = (int) temp;
- BOUND(sysfs_data->data.integer.variable, integer);
- break;
- }
- case TOI_SYSFS_DATA_LONG:
- {
- long *variable =
- sysfs_data->data.a_long.variable;
- result = kstrtol(my_buf, 0, variable);
- if (result)
- break;
- BOUND(variable, a_long);
- break;
- }
- case TOI_SYSFS_DATA_UL:
- {
- unsigned long *variable =
- sysfs_data->data.ul.variable;
- result = kstrtoul(my_buf, 0, variable);
- if (result)
- break;
- BOUND(variable, ul);
- break;
- }
- break;
- case TOI_SYSFS_DATA_STRING:
- {
- int copy_len = count;
- char *variable =
- sysfs_data->data.string.variable;
-
- if (sysfs_data->data.string.max_length &&
- (copy_len > sysfs_data->data.string.max_length))
- copy_len = sysfs_data->data.string.max_length;
-
- if (!variable) {
- variable = (char *) toi_get_zeroed_page(31,
- TOI_ATOMIC_GFP);
- sysfs_data->data.string.variable = variable;
- assigned_temp_buffer = 1;
- }
- strncpy(variable, my_buf, copy_len);
- if (copy_len && my_buf[copy_len - 1] == '\n')
- variable[count - 1] = 0;
- variable[count] = 0;
- }
- break;
- }
-
- if (!result)
- result = count;
-
- /* Side effect routine? */
- if (result == count && sysfs_data->write_side_effect)
- sysfs_data->write_side_effect();
-
- /* Free temporary buffers */
- if (assigned_temp_buffer) {
- toi_free_page(31,
- (unsigned long) sysfs_data->data.string.variable);
- sysfs_data->data.string.variable = NULL;
- }
-
- if (sysfs_data->flags & SYSFS_NEEDS_SM_FOR_WRITE)
- toi_cleanup_usm();
-
- toi_finish_anything(sysfs_data->flags & SYSFS_HIBERNATE_OR_RESUME);
-
- return result;
-}
-
-static struct sysfs_ops toi_sysfs_ops = {
- .show = &toi_attr_show,
- .store = &toi_attr_store,
-};
-
-static struct kobj_type toi_ktype = {
- .sysfs_ops = &toi_sysfs_ops,
-};
-
-struct kobject *tuxonice_kobj;
-
-/* Non-module sysfs entries.
- *
- * This array contains entries that are automatically registered at
- * boot. Modules and the console code register their own entries separately.
- */
-
-static struct toi_sysfs_data sysfs_params[] = {
- SYSFS_CUSTOM("do_hibernate", SYSFS_WRITEONLY, NULL, NULL,
- SYSFS_HIBERNATING, toi_main_wrapper),
- SYSFS_CUSTOM("do_resume", SYSFS_WRITEONLY, NULL, NULL,
- SYSFS_RESUMING, toi_try_resume)
-};
-
-void remove_toi_sysdir(struct kobject *kobj)
-{
- if (!kobj)
- return;
-
- kobject_put(kobj);
-}
-
-struct kobject *make_toi_sysdir(char *name)
-{
- struct kobject *kobj = kobject_create_and_add(name, tuxonice_kobj);
-
- if (!kobj) {
- printk(KERN_INFO "TuxOnIce: Can't allocate kobject for sysfs "
- "dir!\n");
- return NULL;
- }
-
- kobj->ktype = &toi_ktype;
-
- return kobj;
-}
-
-/* toi_register_sysfs_file
- *
- * Helper for registering a new /sysfs/tuxonice entry.
- */
-
-int toi_register_sysfs_file(
- struct kobject *kobj,
- struct toi_sysfs_data *toi_sysfs_data)
-{
- int result;
-
- if (!toi_sysfs_initialised)
- toi_initialise_sysfs();
-
- result = sysfs_create_file(kobj, &toi_sysfs_data->attr);
- if (result)
- printk(KERN_INFO "TuxOnIce: sysfs_create_file for %s "
- "returned %d.\n",
- toi_sysfs_data->attr.name, result);
- kobj->ktype = &toi_ktype;
-
- return result;
-}
-
-/* toi_unregister_sysfs_file
- *
- * Helper for removing unwanted /sys/power/tuxonice entries.
- *
- */
-void toi_unregister_sysfs_file(struct kobject *kobj,
- struct toi_sysfs_data *toi_sysfs_data)
-{
- sysfs_remove_file(kobj, &toi_sysfs_data->attr);
-}
-
-void toi_cleanup_sysfs(void)
-{
- int i,
- numfiles = sizeof(sysfs_params) / sizeof(struct toi_sysfs_data);
-
- if (!toi_sysfs_initialised)
- return;
-
- for (i = 0; i < numfiles; i++)
- toi_unregister_sysfs_file(tuxonice_kobj, &sysfs_params[i]);
-
- kobject_put(tuxonice_kobj);
- toi_sysfs_initialised = 0;
-}
-
-/* toi_initialise_sysfs
- *
- * Initialise the /sysfs/tuxonice directory.
- */
-
-static void toi_initialise_sysfs(void)
-{
- int i;
- int numfiles = sizeof(sysfs_params) / sizeof(struct toi_sysfs_data);
-
- if (toi_sysfs_initialised)
- return;
-
- /* Make our TuxOnIce directory a child of /sys/power */
- tuxonice_kobj = kobject_create_and_add("tuxonice", power_kobj);
- if (!tuxonice_kobj)
- return;
-
- toi_sysfs_initialised = 1;
-
- for (i = 0; i < numfiles; i++)
- toi_register_sysfs_file(tuxonice_kobj, &sysfs_params[i]);
-}
-
-int toi_sysfs_init(void)
-{
- toi_initialise_sysfs();
- return 0;
-}
-
-void toi_sysfs_exit(void)
-{
- toi_cleanup_sysfs();
-}