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-rw-r--r--drivers/base/sys.c458
1 files changed, 0 insertions, 458 deletions
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
deleted file mode 100644
index 66ed8f2fece..00000000000
--- a/drivers/base/sys.c
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * sys.c - pseudo-bus for system 'devices' (cpus, PICs, timers, etc)
- *
- * Copyright (c) 2002-3 Patrick Mochel
- * 2002-3 Open Source Development Lab
- *
- * This file is released under the GPLv2
- *
- * This exports a 'system' bus type.
- * By default, a 'sys' bus gets added to the root of the system. There will
- * always be core system devices. Devices can use sysdev_register() to
- * add themselves as children of the system bus.
- */
-
-#include <linux/config.h>
-#include <linux/sysdev.h>
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/pm.h>
-#include <asm/semaphore.h>
-
-extern struct subsystem devices_subsys;
-
-#define to_sysdev(k) container_of(k, struct sys_device, kobj)
-#define to_sysdev_attr(a) container_of(a, struct sysdev_attribute, attr)
-
-
-static ssize_t
-sysdev_show(struct kobject * kobj, struct attribute * attr, char * buffer)
-{
- struct sys_device * sysdev = to_sysdev(kobj);
- struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
-
- if (sysdev_attr->show)
- return sysdev_attr->show(sysdev, buffer);
- return -EIO;
-}
-
-
-static ssize_t
-sysdev_store(struct kobject * kobj, struct attribute * attr,
- const char * buffer, size_t count)
-{
- struct sys_device * sysdev = to_sysdev(kobj);
- struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
-
- if (sysdev_attr->store)
- return sysdev_attr->store(sysdev, buffer, count);
- return -EIO;
-}
-
-static struct sysfs_ops sysfs_ops = {
- .show = sysdev_show,
- .store = sysdev_store,
-};
-
-static struct kobj_type ktype_sysdev = {
- .sysfs_ops = &sysfs_ops,
-};
-
-
-int sysdev_create_file(struct sys_device * s, struct sysdev_attribute * a)
-{
- return sysfs_create_file(&s->kobj, &a->attr);
-}
-
-
-void sysdev_remove_file(struct sys_device * s, struct sysdev_attribute * a)
-{
- sysfs_remove_file(&s->kobj, &a->attr);
-}
-
-EXPORT_SYMBOL_GPL(sysdev_create_file);
-EXPORT_SYMBOL_GPL(sysdev_remove_file);
-
-/*
- * declare system_subsys
- */
-static decl_subsys(system, &ktype_sysdev, NULL);
-
-int sysdev_class_register(struct sysdev_class * cls)
-{
- pr_debug("Registering sysdev class '%s'\n",
- kobject_name(&cls->kset.kobj));
- INIT_LIST_HEAD(&cls->drivers);
- cls->kset.subsys = &system_subsys;
- kset_set_kset_s(cls, system_subsys);
- return kset_register(&cls->kset);
-}
-
-void sysdev_class_unregister(struct sysdev_class * cls)
-{
- pr_debug("Unregistering sysdev class '%s'\n",
- kobject_name(&cls->kset.kobj));
- kset_unregister(&cls->kset);
-}
-
-EXPORT_SYMBOL_GPL(sysdev_class_register);
-EXPORT_SYMBOL_GPL(sysdev_class_unregister);
-
-
-static LIST_HEAD(sysdev_drivers);
-static DECLARE_MUTEX(sysdev_drivers_lock);
-
-/**
- * sysdev_driver_register - Register auxillary driver
- * @cls: Device class driver belongs to.
- * @drv: Driver.
- *
- * If @cls is valid, then @drv is inserted into @cls->drivers to be
- * called on each operation on devices of that class. The refcount
- * of @cls is incremented.
- * Otherwise, @drv is inserted into sysdev_drivers, and called for
- * each device.
- */
-
-int sysdev_driver_register(struct sysdev_class * cls,
- struct sysdev_driver * drv)
-{
- down(&sysdev_drivers_lock);
- if (cls && kset_get(&cls->kset)) {
- list_add_tail(&drv->entry, &cls->drivers);
-
- /* If devices of this class already exist, tell the driver */
- if (drv->add) {
- struct sys_device *dev;
- list_for_each_entry(dev, &cls->kset.list, kobj.entry)
- drv->add(dev);
- }
- } else
- list_add_tail(&drv->entry, &sysdev_drivers);
- up(&sysdev_drivers_lock);
- return 0;
-}
-
-
-/**
- * sysdev_driver_unregister - Remove an auxillary driver.
- * @cls: Class driver belongs to.
- * @drv: Driver.
- */
-void sysdev_driver_unregister(struct sysdev_class * cls,
- struct sysdev_driver * drv)
-{
- down(&sysdev_drivers_lock);
- list_del_init(&drv->entry);
- if (cls) {
- if (drv->remove) {
- struct sys_device *dev;
- list_for_each_entry(dev, &cls->kset.list, kobj.entry)
- drv->remove(dev);
- }
- kset_put(&cls->kset);
- }
- up(&sysdev_drivers_lock);
-}
-
-EXPORT_SYMBOL_GPL(sysdev_driver_register);
-EXPORT_SYMBOL_GPL(sysdev_driver_unregister);
-
-
-
-/**
- * sysdev_register - add a system device to the tree
- * @sysdev: device in question
- *
- */
-int sysdev_register(struct sys_device * sysdev)
-{
- int error;
- struct sysdev_class * cls = sysdev->cls;
-
- if (!cls)
- return -EINVAL;
-
- /* Make sure the kset is set */
- sysdev->kobj.kset = &cls->kset;
-
- /* But make sure we point to the right type for sysfs translation */
- sysdev->kobj.ktype = &ktype_sysdev;
- error = kobject_set_name(&sysdev->kobj, "%s%d",
- kobject_name(&cls->kset.kobj), sysdev->id);
- if (error)
- return error;
-
- pr_debug("Registering sys device '%s'\n", kobject_name(&sysdev->kobj));
-
- /* Register the object */
- error = kobject_register(&sysdev->kobj);
-
- if (!error) {
- struct sysdev_driver * drv;
-
- down(&sysdev_drivers_lock);
- /* Generic notification is implicit, because it's that
- * code that should have called us.
- */
-
- /* Notify global drivers */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->add)
- drv->add(sysdev);
- }
-
- /* Notify class auxillary drivers */
- list_for_each_entry(drv, &cls->drivers, entry) {
- if (drv->add)
- drv->add(sysdev);
- }
- up(&sysdev_drivers_lock);
- }
- return error;
-}
-
-void sysdev_unregister(struct sys_device * sysdev)
-{
- struct sysdev_driver * drv;
-
- down(&sysdev_drivers_lock);
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->remove)
- drv->remove(sysdev);
- }
-
- list_for_each_entry(drv, &sysdev->cls->drivers, entry) {
- if (drv->remove)
- drv->remove(sysdev);
- }
- up(&sysdev_drivers_lock);
-
- kobject_unregister(&sysdev->kobj);
-}
-
-
-
-/**
- * sysdev_shutdown - Shut down all system devices.
- *
- * Loop over each class of system devices, and the devices in each
- * of those classes. For each device, we call the shutdown method for
- * each driver registered for the device - the globals, the auxillaries,
- * and the class driver.
- *
- * Note: The list is iterated in reverse order, so that we shut down
- * child devices before we shut down thier parents. The list ordering
- * is guaranteed by virtue of the fact that child devices are registered
- * after their parents.
- */
-
-void sysdev_shutdown(void)
-{
- struct sysdev_class * cls;
-
- pr_debug("Shutting Down System Devices\n");
-
- down(&sysdev_drivers_lock);
- list_for_each_entry_reverse(cls, &system_subsys.kset.list,
- kset.kobj.entry) {
- struct sys_device * sysdev;
-
- pr_debug("Shutting down type '%s':\n",
- kobject_name(&cls->kset.kobj));
-
- list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) {
- struct sysdev_driver * drv;
- pr_debug(" %s\n", kobject_name(&sysdev->kobj));
-
- /* Call global drivers first. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->shutdown)
- drv->shutdown(sysdev);
- }
-
- /* Call auxillary drivers next. */
- list_for_each_entry(drv, &cls->drivers, entry) {
- if (drv->shutdown)
- drv->shutdown(sysdev);
- }
-
- /* Now call the generic one */
- if (cls->shutdown)
- cls->shutdown(sysdev);
- }
- }
- up(&sysdev_drivers_lock);
-}
-
-static void __sysdev_resume(struct sys_device *dev)
-{
- struct sysdev_class *cls = dev->cls;
- struct sysdev_driver *drv;
-
- /* First, call the class-specific one */
- if (cls->resume)
- cls->resume(dev);
-
- /* Call auxillary drivers next. */
- list_for_each_entry(drv, &cls->drivers, entry) {
- if (drv->resume)
- drv->resume(dev);
- }
-
- /* Call global drivers. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->resume)
- drv->resume(dev);
- }
-}
-
-/**
- * sysdev_suspend - Suspend all system devices.
- * @state: Power state to enter.
- *
- * We perform an almost identical operation as sys_device_shutdown()
- * above, though calling ->suspend() instead. Interrupts are disabled
- * when this called. Devices are responsible for both saving state and
- * quiescing or powering down the device.
- *
- * This is only called by the device PM core, so we let them handle
- * all synchronization.
- */
-
-int sysdev_suspend(pm_message_t state)
-{
- struct sysdev_class * cls;
- struct sys_device *sysdev, *err_dev;
- struct sysdev_driver *drv, *err_drv;
- int ret;
-
- pr_debug("Suspending System Devices\n");
-
- list_for_each_entry_reverse(cls, &system_subsys.kset.list,
- kset.kobj.entry) {
-
- pr_debug("Suspending type '%s':\n",
- kobject_name(&cls->kset.kobj));
-
- list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) {
- pr_debug(" %s\n", kobject_name(&sysdev->kobj));
-
- /* Call global drivers first. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->suspend) {
- ret = drv->suspend(sysdev, state);
- if (ret)
- goto gbl_driver;
- }
- }
-
- /* Call auxillary drivers next. */
- list_for_each_entry(drv, &cls->drivers, entry) {
- if (drv->suspend) {
- ret = drv->suspend(sysdev, state);
- if (ret)
- goto aux_driver;
- }
- }
-
- /* Now call the generic one */
- if (cls->suspend) {
- ret = cls->suspend(sysdev, state);
- if (ret)
- goto cls_driver;
- }
- }
- }
- return 0;
- /* resume current sysdev */
-cls_driver:
- drv = NULL;
- printk(KERN_ERR "Class suspend failed for %s\n",
- kobject_name(&sysdev->kobj));
-
-aux_driver:
- if (drv)
- printk(KERN_ERR "Class driver suspend failed for %s\n",
- kobject_name(&sysdev->kobj));
- list_for_each_entry(err_drv, &cls->drivers, entry) {
- if (err_drv == drv)
- break;
- if (err_drv->resume)
- err_drv->resume(sysdev);
- }
- drv = NULL;
-
-gbl_driver:
- if (drv)
- printk(KERN_ERR "sysdev driver suspend failed for %s\n",
- kobject_name(&sysdev->kobj));
- list_for_each_entry(err_drv, &sysdev_drivers, entry) {
- if (err_drv == drv)
- break;
- if (err_drv->resume)
- err_drv->resume(sysdev);
- }
- /* resume other sysdevs in current class */
- list_for_each_entry(err_dev, &cls->kset.list, kobj.entry) {
- if (err_dev == sysdev)
- break;
- pr_debug(" %s\n", kobject_name(&err_dev->kobj));
- __sysdev_resume(err_dev);
- }
-
- /* resume other classes */
- list_for_each_entry_continue(cls, &system_subsys.kset.list,
- kset.kobj.entry) {
- list_for_each_entry(err_dev, &cls->kset.list, kobj.entry) {
- pr_debug(" %s\n", kobject_name(&err_dev->kobj));
- __sysdev_resume(err_dev);
- }
- }
- return ret;
-}
-
-
-/**
- * sysdev_resume - Bring system devices back to life.
- *
- * Similar to sys_device_suspend(), but we iterate the list forwards
- * to guarantee that parent devices are resumed before their children.
- *
- * Note: Interrupts are disabled when called.
- */
-
-int sysdev_resume(void)
-{
- struct sysdev_class * cls;
-
- pr_debug("Resuming System Devices\n");
-
- list_for_each_entry(cls, &system_subsys.kset.list, kset.kobj.entry) {
- struct sys_device * sysdev;
-
- pr_debug("Resuming type '%s':\n",
- kobject_name(&cls->kset.kobj));
-
- list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) {
- pr_debug(" %s\n", kobject_name(&sysdev->kobj));
-
- __sysdev_resume(sysdev);
- }
- }
- return 0;
-}
-
-
-int __init system_bus_init(void)
-{
- system_subsys.kset.kobj.parent = &devices_subsys.kset.kobj;
- return subsystem_register(&system_subsys);
-}
-
-EXPORT_SYMBOL_GPL(sysdev_register);
-EXPORT_SYMBOL_GPL(sysdev_unregister);