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Diffstat (limited to 'ANDROID_3.4.5/include/linux/device.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/device.h | 1021 |
1 files changed, 0 insertions, 1021 deletions
diff --git a/ANDROID_3.4.5/include/linux/device.h b/ANDROID_3.4.5/include/linux/device.h deleted file mode 100644 index 5ad17ccc..00000000 --- a/ANDROID_3.4.5/include/linux/device.h +++ /dev/null @@ -1,1021 +0,0 @@ -/* - * device.h - generic, centralized driver model - * - * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org> - * Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de> - * Copyright (c) 2008-2009 Novell Inc. - * - * This file is released under the GPLv2 - * - * See Documentation/driver-model/ for more information. - */ - -#ifndef _DEVICE_H_ -#define _DEVICE_H_ - -#include <linux/ioport.h> -#include <linux/kobject.h> -#include <linux/klist.h> -#include <linux/list.h> -#include <linux/lockdep.h> -#include <linux/compiler.h> -#include <linux/types.h> -#include <linux/mutex.h> -#include <linux/pm.h> -#include <linux/atomic.h> -#include <asm/device.h> - -struct device; -struct device_private; -struct device_driver; -struct driver_private; -struct module; -struct class; -struct subsys_private; -struct bus_type; -struct device_node; -struct iommu_ops; - -struct bus_attribute { - struct attribute attr; - ssize_t (*show)(struct bus_type *bus, char *buf); - ssize_t (*store)(struct bus_type *bus, const char *buf, size_t count); -}; - -#define BUS_ATTR(_name, _mode, _show, _store) \ -struct bus_attribute bus_attr_##_name = __ATTR(_name, _mode, _show, _store) - -extern int __must_check bus_create_file(struct bus_type *, - struct bus_attribute *); -extern void bus_remove_file(struct bus_type *, struct bus_attribute *); - -/** - * struct bus_type - The bus type of the device - * - * @name: The name of the bus. - * @dev_name: Used for subsystems to enumerate devices like ("foo%u", dev->id). - * @dev_root: Default device to use as the parent. - * @bus_attrs: Default attributes of the bus. - * @dev_attrs: Default attributes of the devices on the bus. - * @drv_attrs: Default attributes of the device drivers on the bus. - * @match: Called, perhaps multiple times, whenever a new device or driver - * is added for this bus. It should return a nonzero value if the - * given device can be handled by the given driver. - * @uevent: Called when a device is added, removed, or a few other things - * that generate uevents to add the environment variables. - * @probe: Called when a new device or driver add to this bus, and callback - * the specific driver's probe to initial the matched device. - * @remove: Called when a device removed from this bus. - * @shutdown: Called at shut-down time to quiesce the device. - * @suspend: Called when a device on this bus wants to go to sleep mode. - * @resume: Called to bring a device on this bus out of sleep mode. - * @pm: Power management operations of this bus, callback the specific - * device driver's pm-ops. - * @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU - * driver implementations to a bus and allow the driver to do - * bus-specific setup - * @p: The private data of the driver core, only the driver core can - * touch this. - * - * A bus is a channel between the processor and one or more devices. For the - * purposes of the device model, all devices are connected via a bus, even if - * it is an internal, virtual, "platform" bus. Buses can plug into each other. - * A USB controller is usually a PCI device, for example. The device model - * represents the actual connections between buses and the devices they control. - * A bus is represented by the bus_type structure. It contains the name, the - * default attributes, the bus' methods, PM operations, and the driver core's - * private data. - */ -struct bus_type { - const char *name; - const char *dev_name; - struct device *dev_root; - struct bus_attribute *bus_attrs; - struct device_attribute *dev_attrs; - struct driver_attribute *drv_attrs; - - int (*match)(struct device *dev, struct device_driver *drv); - int (*uevent)(struct device *dev, struct kobj_uevent_env *env); - int (*probe)(struct device *dev); - int (*remove)(struct device *dev); - void (*shutdown)(struct device *dev); - - int (*suspend)(struct device *dev, pm_message_t state); - int (*resume)(struct device *dev); - - const struct dev_pm_ops *pm; - - struct iommu_ops *iommu_ops; - - struct subsys_private *p; -}; - -/* This is a #define to keep the compiler from merging different - * instances of the __key variable */ -#define bus_register(subsys) \ -({ \ - static struct lock_class_key __key; \ - __bus_register(subsys, &__key); \ -}) -extern int __must_check __bus_register(struct bus_type *bus, - struct lock_class_key *key); -extern void bus_unregister(struct bus_type *bus); - -extern int __must_check bus_rescan_devices(struct bus_type *bus); - -/* iterator helpers for buses */ -struct subsys_dev_iter { - struct klist_iter ki; - const struct device_type *type; -}; -void subsys_dev_iter_init(struct subsys_dev_iter *iter, - struct bus_type *subsys, - struct device *start, - const struct device_type *type); -struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter); -void subsys_dev_iter_exit(struct subsys_dev_iter *iter); - -int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, - int (*fn)(struct device *dev, void *data)); -struct device *bus_find_device(struct bus_type *bus, struct device *start, - void *data, - int (*match)(struct device *dev, void *data)); -struct device *bus_find_device_by_name(struct bus_type *bus, - struct device *start, - const char *name); -struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id, - struct device *hint); -int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, - void *data, int (*fn)(struct device_driver *, void *)); -void bus_sort_breadthfirst(struct bus_type *bus, - int (*compare)(const struct device *a, - const struct device *b)); -/* - * Bus notifiers: Get notified of addition/removal of devices - * and binding/unbinding of drivers to devices. - * In the long run, it should be a replacement for the platform - * notify hooks. - */ -struct notifier_block; - -extern int bus_register_notifier(struct bus_type *bus, - struct notifier_block *nb); -extern int bus_unregister_notifier(struct bus_type *bus, - struct notifier_block *nb); - -/* All 4 notifers below get called with the target struct device * - * as an argument. Note that those functions are likely to be called - * with the device lock held in the core, so be careful. - */ -#define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */ -#define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device removed */ -#define BUS_NOTIFY_BIND_DRIVER 0x00000003 /* driver about to be - bound */ -#define BUS_NOTIFY_BOUND_DRIVER 0x00000004 /* driver bound to device */ -#define BUS_NOTIFY_UNBIND_DRIVER 0x00000005 /* driver about to be - unbound */ -#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000006 /* driver is unbound - from the device */ - -extern struct kset *bus_get_kset(struct bus_type *bus); -extern struct klist *bus_get_device_klist(struct bus_type *bus); - -/** - * struct device_driver - The basic device driver structure - * @name: Name of the device driver. - * @bus: The bus which the device of this driver belongs to. - * @owner: The module owner. - * @mod_name: Used for built-in modules. - * @suppress_bind_attrs: Disables bind/unbind via sysfs. - * @of_match_table: The open firmware table. - * @probe: Called to query the existence of a specific device, - * whether this driver can work with it, and bind the driver - * to a specific device. - * @remove: Called when the device is removed from the system to - * unbind a device from this driver. - * @shutdown: Called at shut-down time to quiesce the device. - * @suspend: Called to put the device to sleep mode. Usually to a - * low power state. - * @resume: Called to bring a device from sleep mode. - * @groups: Default attributes that get created by the driver core - * automatically. - * @pm: Power management operations of the device which matched - * this driver. - * @p: Driver core's private data, no one other than the driver - * core can touch this. - * - * The device driver-model tracks all of the drivers known to the system. - * The main reason for this tracking is to enable the driver core to match - * up drivers with new devices. Once drivers are known objects within the - * system, however, a number of other things become possible. Device drivers - * can export information and configuration variables that are independent - * of any specific device. - */ -struct device_driver { - const char *name; - struct bus_type *bus; - - struct module *owner; - const char *mod_name; /* used for built-in modules */ - - bool suppress_bind_attrs; /* disables bind/unbind via sysfs */ - - const struct of_device_id *of_match_table; - - int (*probe) (struct device *dev); - int (*remove) (struct device *dev); - void (*shutdown) (struct device *dev); - int (*suspend) (struct device *dev, pm_message_t state); - int (*resume) (struct device *dev); - const struct attribute_group **groups; - - const struct dev_pm_ops *pm; - - struct driver_private *p; -}; - - -extern int __must_check driver_register(struct device_driver *drv); -extern void driver_unregister(struct device_driver *drv); - -extern struct device_driver *driver_find(const char *name, - struct bus_type *bus); -extern int driver_probe_done(void); -extern void wait_for_device_probe(void); - - -/* sysfs interface for exporting driver attributes */ - -struct driver_attribute { - struct attribute attr; - ssize_t (*show)(struct device_driver *driver, char *buf); - ssize_t (*store)(struct device_driver *driver, const char *buf, - size_t count); -}; - -#define DRIVER_ATTR(_name, _mode, _show, _store) \ -struct driver_attribute driver_attr_##_name = \ - __ATTR(_name, _mode, _show, _store) - -extern int __must_check driver_create_file(struct device_driver *driver, - const struct driver_attribute *attr); -extern void driver_remove_file(struct device_driver *driver, - const struct driver_attribute *attr); - -extern int __must_check driver_for_each_device(struct device_driver *drv, - struct device *start, - void *data, - int (*fn)(struct device *dev, - void *)); -struct device *driver_find_device(struct device_driver *drv, - struct device *start, void *data, - int (*match)(struct device *dev, void *data)); - -/** - * struct subsys_interface - interfaces to device functions - * @name: name of the device function - * @subsys: subsytem of the devices to attach to - * @node: the list of functions registered at the subsystem - * @add_dev: device hookup to device function handler - * @remove_dev: device hookup to device function handler - * - * Simple interfaces attached to a subsystem. Multiple interfaces can - * attach to a subsystem and its devices. Unlike drivers, they do not - * exclusively claim or control devices. Interfaces usually represent - * a specific functionality of a subsystem/class of devices. - */ -struct subsys_interface { - const char *name; - struct bus_type *subsys; - struct list_head node; - int (*add_dev)(struct device *dev, struct subsys_interface *sif); - int (*remove_dev)(struct device *dev, struct subsys_interface *sif); -}; - -int subsys_interface_register(struct subsys_interface *sif); -void subsys_interface_unregister(struct subsys_interface *sif); - -int subsys_system_register(struct bus_type *subsys, - const struct attribute_group **groups); - -/** - * struct class - device classes - * @name: Name of the class. - * @owner: The module owner. - * @class_attrs: Default attributes of this class. - * @dev_attrs: Default attributes of the devices belong to the class. - * @dev_bin_attrs: Default binary attributes of the devices belong to the class. - * @dev_kobj: The kobject that represents this class and links it into the hierarchy. - * @dev_uevent: Called when a device is added, removed from this class, or a - * few other things that generate uevents to add the environment - * variables. - * @devnode: Callback to provide the devtmpfs. - * @class_release: Called to release this class. - * @dev_release: Called to release the device. - * @suspend: Used to put the device to sleep mode, usually to a low power - * state. - * @resume: Used to bring the device from the sleep mode. - * @ns_type: Callbacks so sysfs can detemine namespaces. - * @namespace: Namespace of the device belongs to this class. - * @pm: The default device power management operations of this class. - * @p: The private data of the driver core, no one other than the - * driver core can touch this. - * - * A class is a higher-level view of a device that abstracts out low-level - * implementation details. Drivers may see a SCSI disk or an ATA disk, but, - * at the class level, they are all simply disks. Classes allow user space - * to work with devices based on what they do, rather than how they are - * connected or how they work. - */ -struct class { - const char *name; - struct module *owner; - - struct class_attribute *class_attrs; - struct device_attribute *dev_attrs; - struct bin_attribute *dev_bin_attrs; - struct kobject *dev_kobj; - - int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env); - char *(*devnode)(struct device *dev, umode_t *mode); - - void (*class_release)(struct class *class); - void (*dev_release)(struct device *dev); - - int (*suspend)(struct device *dev, pm_message_t state); - int (*resume)(struct device *dev); - - const struct kobj_ns_type_operations *ns_type; - const void *(*namespace)(struct device *dev); - - const struct dev_pm_ops *pm; - - struct subsys_private *p; -}; - -struct class_dev_iter { - struct klist_iter ki; - const struct device_type *type; -}; - -extern struct kobject *sysfs_dev_block_kobj; -extern struct kobject *sysfs_dev_char_kobj; -extern int __must_check __class_register(struct class *class, - struct lock_class_key *key); -extern void class_unregister(struct class *class); - -/* This is a #define to keep the compiler from merging different - * instances of the __key variable */ -#define class_register(class) \ -({ \ - static struct lock_class_key __key; \ - __class_register(class, &__key); \ -}) - -struct class_compat; -struct class_compat *class_compat_register(const char *name); -void class_compat_unregister(struct class_compat *cls); -int class_compat_create_link(struct class_compat *cls, struct device *dev, - struct device *device_link); -void class_compat_remove_link(struct class_compat *cls, struct device *dev, - struct device *device_link); - -extern void class_dev_iter_init(struct class_dev_iter *iter, - struct class *class, - struct device *start, - const struct device_type *type); -extern struct device *class_dev_iter_next(struct class_dev_iter *iter); -extern void class_dev_iter_exit(struct class_dev_iter *iter); - -extern int class_for_each_device(struct class *class, struct device *start, - void *data, - int (*fn)(struct device *dev, void *data)); -extern struct device *class_find_device(struct class *class, - struct device *start, void *data, - int (*match)(struct device *, void *)); - -struct class_attribute { - struct attribute attr; - ssize_t (*show)(struct class *class, struct class_attribute *attr, - char *buf); - ssize_t (*store)(struct class *class, struct class_attribute *attr, - const char *buf, size_t count); - const void *(*namespace)(struct class *class, - const struct class_attribute *attr); -}; - -#define CLASS_ATTR(_name, _mode, _show, _store) \ -struct class_attribute class_attr_##_name = __ATTR(_name, _mode, _show, _store) - -extern int __must_check class_create_file(struct class *class, - const struct class_attribute *attr); -extern void class_remove_file(struct class *class, - const struct class_attribute *attr); - -/* Simple class attribute that is just a static string */ - -struct class_attribute_string { - struct class_attribute attr; - char *str; -}; - -/* Currently read-only only */ -#define _CLASS_ATTR_STRING(_name, _mode, _str) \ - { __ATTR(_name, _mode, show_class_attr_string, NULL), _str } -#define CLASS_ATTR_STRING(_name, _mode, _str) \ - struct class_attribute_string class_attr_##_name = \ - _CLASS_ATTR_STRING(_name, _mode, _str) - -extern ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr, - char *buf); - -struct class_interface { - struct list_head node; - struct class *class; - - int (*add_dev) (struct device *, struct class_interface *); - void (*remove_dev) (struct device *, struct class_interface *); -}; - -extern int __must_check class_interface_register(struct class_interface *); -extern void class_interface_unregister(struct class_interface *); - -extern struct class * __must_check __class_create(struct module *owner, - const char *name, - struct lock_class_key *key); -extern void class_destroy(struct class *cls); - -/* This is a #define to keep the compiler from merging different - * instances of the __key variable */ -#define class_create(owner, name) \ -({ \ - static struct lock_class_key __key; \ - __class_create(owner, name, &__key); \ -}) - -/* - * The type of device, "struct device" is embedded in. A class - * or bus can contain devices of different types - * like "partitions" and "disks", "mouse" and "event". - * This identifies the device type and carries type-specific - * information, equivalent to the kobj_type of a kobject. - * If "name" is specified, the uevent will contain it in - * the DEVTYPE variable. - */ -struct device_type { - const char *name; - const struct attribute_group **groups; - int (*uevent)(struct device *dev, struct kobj_uevent_env *env); - char *(*devnode)(struct device *dev, umode_t *mode); - void (*release)(struct device *dev); - - const struct dev_pm_ops *pm; -}; - -/* interface for exporting device attributes */ -struct device_attribute { - struct attribute attr; - ssize_t (*show)(struct device *dev, struct device_attribute *attr, - char *buf); - ssize_t (*store)(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count); -}; - -struct dev_ext_attribute { - struct device_attribute attr; - void *var; -}; - -ssize_t device_show_ulong(struct device *dev, struct device_attribute *attr, - char *buf); -ssize_t device_store_ulong(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count); -ssize_t device_show_int(struct device *dev, struct device_attribute *attr, - char *buf); -ssize_t device_store_int(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count); - -#define DEVICE_ATTR(_name, _mode, _show, _store) \ - struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store) -#define DEVICE_ULONG_ATTR(_name, _mode, _var) \ - struct dev_ext_attribute dev_attr_##_name = \ - { __ATTR(_name, _mode, device_show_ulong, device_store_ulong), &(_var) } -#define DEVICE_INT_ATTR(_name, _mode, _var) \ - struct dev_ext_attribute dev_attr_##_name = \ - { __ATTR(_name, _mode, device_show_ulong, device_store_ulong), &(_var) } - -extern int device_create_file(struct device *device, - const struct device_attribute *entry); -extern void device_remove_file(struct device *dev, - const struct device_attribute *attr); -extern int __must_check device_create_bin_file(struct device *dev, - const struct bin_attribute *attr); -extern void device_remove_bin_file(struct device *dev, - const struct bin_attribute *attr); -extern int device_schedule_callback_owner(struct device *dev, - void (*func)(struct device *dev), struct module *owner); - -/* This is a macro to avoid include problems with THIS_MODULE */ -#define device_schedule_callback(dev, func) \ - device_schedule_callback_owner(dev, func, THIS_MODULE) - -/* device resource management */ -typedef void (*dr_release_t)(struct device *dev, void *res); -typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data); - -#ifdef CONFIG_DEBUG_DEVRES -extern void *__devres_alloc(dr_release_t release, size_t size, gfp_t gfp, - const char *name); -#define devres_alloc(release, size, gfp) \ - __devres_alloc(release, size, gfp, #release) -#else -extern void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp); -#endif -extern void devres_free(void *res); -extern void devres_add(struct device *dev, void *res); -extern void *devres_find(struct device *dev, dr_release_t release, - dr_match_t match, void *match_data); -extern void *devres_get(struct device *dev, void *new_res, - dr_match_t match, void *match_data); -extern void *devres_remove(struct device *dev, dr_release_t release, - dr_match_t match, void *match_data); -extern int devres_destroy(struct device *dev, dr_release_t release, - dr_match_t match, void *match_data); - -/* devres group */ -extern void * __must_check devres_open_group(struct device *dev, void *id, - gfp_t gfp); -extern void devres_close_group(struct device *dev, void *id); -extern void devres_remove_group(struct device *dev, void *id); -extern int devres_release_group(struct device *dev, void *id); - -/* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */ -extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); -extern void devm_kfree(struct device *dev, void *p); - -void __iomem *devm_request_and_ioremap(struct device *dev, - struct resource *res); - -struct device_dma_parameters { - /* - * a low level driver may set these to teach IOMMU code about - * sg limitations. - */ - unsigned int max_segment_size; - unsigned long segment_boundary_mask; -}; - -/** - * struct device - The basic device structure - * @parent: The device's "parent" device, the device to which it is attached. - * In most cases, a parent device is some sort of bus or host - * controller. If parent is NULL, the device, is a top-level device, - * which is not usually what you want. - * @p: Holds the private data of the driver core portions of the device. - * See the comment of the struct device_private for detail. - * @kobj: A top-level, abstract class from which other classes are derived. - * @init_name: Initial name of the device. - * @type: The type of device. - * This identifies the device type and carries type-specific - * information. - * @mutex: Mutex to synchronize calls to its driver. - * @bus: Type of bus device is on. - * @driver: Which driver has allocated this - * @platform_data: Platform data specific to the device. - * Example: For devices on custom boards, as typical of embedded - * and SOC based hardware, Linux often uses platform_data to point - * to board-specific structures describing devices and how they - * are wired. That can include what ports are available, chip - * variants, which GPIO pins act in what additional roles, and so - * on. This shrinks the "Board Support Packages" (BSPs) and - * minimizes board-specific #ifdefs in drivers. - * @power: For device power management. - * See Documentation/power/devices.txt for details. - * @pm_domain: Provide callbacks that are executed during system suspend, - * hibernation, system resume and during runtime PM transitions - * along with subsystem-level and driver-level callbacks. - * @numa_node: NUMA node this device is close to. - * @dma_mask: Dma mask (if dma'ble device). - * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all - * hardware supports 64-bit addresses for consistent allocations - * such descriptors. - * @dma_parms: A low level driver may set these to teach IOMMU code about - * segment limitations. - * @dma_pools: Dma pools (if dma'ble device). - * @dma_mem: Internal for coherent mem override. - * @archdata: For arch-specific additions. - * @of_node: Associated device tree node. - * @devt: For creating the sysfs "dev". - * @id: device instance - * @devres_lock: Spinlock to protect the resource of the device. - * @devres_head: The resources list of the device. - * @knode_class: The node used to add the device to the class list. - * @class: The class of the device. - * @groups: Optional attribute groups. - * @release: Callback to free the device after all references have - * gone away. This should be set by the allocator of the - * device (i.e. the bus driver that discovered the device). - * - * At the lowest level, every device in a Linux system is represented by an - * instance of struct device. The device structure contains the information - * that the device model core needs to model the system. Most subsystems, - * however, track additional information about the devices they host. As a - * result, it is rare for devices to be represented by bare device structures; - * instead, that structure, like kobject structures, is usually embedded within - * a higher-level representation of the device. - */ -struct device { - struct device *parent; - - struct device_private *p; - - struct kobject kobj; - const char *init_name; /* initial name of the device */ - const struct device_type *type; - - struct mutex mutex; /* mutex to synchronize calls to - * its driver. - */ - - struct bus_type *bus; /* type of bus device is on */ - struct device_driver *driver; /* which driver has allocated this - device */ - void *platform_data; /* Platform specific data, device - core doesn't touch it */ - struct dev_pm_info power; - struct dev_pm_domain *pm_domain; - -#ifdef CONFIG_NUMA - int numa_node; /* NUMA node this device is close to */ -#endif - u64 *dma_mask; /* dma mask (if dma'able device) */ - u64 coherent_dma_mask;/* Like dma_mask, but for - alloc_coherent mappings as - not all hardware supports - 64 bit addresses for consistent - allocations such descriptors. */ - - struct device_dma_parameters *dma_parms; - - struct list_head dma_pools; /* dma pools (if dma'ble) */ - - struct dma_coherent_mem *dma_mem; /* internal for coherent mem - override */ - /* arch specific additions */ - struct dev_archdata archdata; - - struct device_node *of_node; /* associated device tree node */ - - dev_t devt; /* dev_t, creates the sysfs "dev" */ - u32 id; /* device instance */ - - spinlock_t devres_lock; - struct list_head devres_head; - - struct klist_node knode_class; - struct class *class; - const struct attribute_group **groups; /* optional groups */ - - void (*release)(struct device *dev); -}; - -/* Get the wakeup routines, which depend on struct device */ -#include <linux/pm_wakeup.h> - -static inline const char *dev_name(const struct device *dev) -{ - /* Use the init name until the kobject becomes available */ - if (dev->init_name) - return dev->init_name; - - return kobject_name(&dev->kobj); -} - -extern __printf(2, 3) -int dev_set_name(struct device *dev, const char *name, ...); - -#ifdef CONFIG_NUMA -static inline int dev_to_node(struct device *dev) -{ - return dev->numa_node; -} -static inline void set_dev_node(struct device *dev, int node) -{ - dev->numa_node = node; -} -#else -static inline int dev_to_node(struct device *dev) -{ - return -1; -} -static inline void set_dev_node(struct device *dev, int node) -{ -} -#endif - -static inline struct pm_subsys_data *dev_to_psd(struct device *dev) -{ - return dev ? dev->power.subsys_data : NULL; -} - -static inline unsigned int dev_get_uevent_suppress(const struct device *dev) -{ - return dev->kobj.uevent_suppress; -} - -static inline void dev_set_uevent_suppress(struct device *dev, int val) -{ - dev->kobj.uevent_suppress = val; -} - -static inline int device_is_registered(struct device *dev) -{ - return dev->kobj.state_in_sysfs; -} - -static inline void device_enable_async_suspend(struct device *dev) -{ - if (!dev->power.is_prepared) - dev->power.async_suspend = true; -} - -static inline void device_disable_async_suspend(struct device *dev) -{ - if (!dev->power.is_prepared) - dev->power.async_suspend = false; -} - -static inline bool device_async_suspend_enabled(struct device *dev) -{ - return !!dev->power.async_suspend; -} - -static inline void pm_suspend_ignore_children(struct device *dev, bool enable) -{ - dev->power.ignore_children = enable; -} - -static inline void device_lock(struct device *dev) -{ - mutex_lock(&dev->mutex); -} - -static inline int device_trylock(struct device *dev) -{ - return mutex_trylock(&dev->mutex); -} - -static inline void device_unlock(struct device *dev) -{ - mutex_unlock(&dev->mutex); -} - -void driver_init(void); - -/* - * High level routines for use by the bus drivers - */ -extern int __must_check device_register(struct device *dev); -extern void device_unregister(struct device *dev); -extern void device_initialize(struct device *dev); -extern int __must_check device_add(struct device *dev); -extern void device_del(struct device *dev); -extern int device_for_each_child(struct device *dev, void *data, - int (*fn)(struct device *dev, void *data)); -extern struct device *device_find_child(struct device *dev, void *data, - int (*match)(struct device *dev, void *data)); -extern int device_rename(struct device *dev, const char *new_name); -extern int device_move(struct device *dev, struct device *new_parent, - enum dpm_order dpm_order); -extern const char *device_get_devnode(struct device *dev, - umode_t *mode, const char **tmp); -extern void *dev_get_drvdata(const struct device *dev); -extern int dev_set_drvdata(struct device *dev, void *data); - -/* - * Root device objects for grouping under /sys/devices - */ -extern struct device *__root_device_register(const char *name, - struct module *owner); - -/* - * This is a macro to avoid include problems with THIS_MODULE, - * just as per what is done for device_schedule_callback() above. - */ -#define root_device_register(name) \ - __root_device_register(name, THIS_MODULE) - -extern void root_device_unregister(struct device *root); - -static inline void *dev_get_platdata(const struct device *dev) -{ - return dev->platform_data; -} - -/* - * Manual binding of a device to driver. See drivers/base/bus.c - * for information on use. - */ -extern int __must_check device_bind_driver(struct device *dev); -extern void device_release_driver(struct device *dev); -extern int __must_check device_attach(struct device *dev); -extern int __must_check driver_attach(struct device_driver *drv); -extern int __must_check device_reprobe(struct device *dev); - -/* - * Easy functions for dynamically creating devices on the fly - */ -extern struct device *device_create_vargs(struct class *cls, - struct device *parent, - dev_t devt, - void *drvdata, - const char *fmt, - va_list vargs); -extern __printf(5, 6) -struct device *device_create(struct class *cls, struct device *parent, - dev_t devt, void *drvdata, - const char *fmt, ...); -extern void device_destroy(struct class *cls, dev_t devt); - -/* - * Platform "fixup" functions - allow the platform to have their say - * about devices and actions that the general device layer doesn't - * know about. - */ -/* Notify platform of device discovery */ -extern int (*platform_notify)(struct device *dev); - -extern int (*platform_notify_remove)(struct device *dev); - - -/* - * get_device - atomically increment the reference count for the device. - * - */ -extern struct device *get_device(struct device *dev); -extern void put_device(struct device *dev); - -extern void wait_for_device_probe(void); - -#ifdef CONFIG_DEVTMPFS -extern int devtmpfs_create_node(struct device *dev); -extern int devtmpfs_delete_node(struct device *dev); -extern int devtmpfs_mount(const char *mntdir); -#else -static inline int devtmpfs_create_node(struct device *dev) { return 0; } -static inline int devtmpfs_delete_node(struct device *dev) { return 0; } -static inline int devtmpfs_mount(const char *mountpoint) { return 0; } -#endif - -/* drivers/base/power/shutdown.c */ -extern void device_shutdown(void); - -/* debugging and troubleshooting/diagnostic helpers. */ -extern const char *dev_driver_string(const struct device *dev); - - -#ifdef CONFIG_PRINTK - -extern int __dev_printk(const char *level, const struct device *dev, - struct va_format *vaf); -extern __printf(3, 4) -int dev_printk(const char *level, const struct device *dev, - const char *fmt, ...) - ; -extern __printf(2, 3) -int dev_emerg(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int dev_alert(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int dev_crit(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int dev_err(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int dev_warn(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int dev_notice(const struct device *dev, const char *fmt, ...); -extern __printf(2, 3) -int _dev_info(const struct device *dev, const char *fmt, ...); - -#else - -static inline int __dev_printk(const char *level, const struct device *dev, - struct va_format *vaf) -{ return 0; } -static inline __printf(3, 4) -int dev_printk(const char *level, const struct device *dev, - const char *fmt, ...) -{ return 0; } - -static inline __printf(2, 3) -int dev_emerg(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int dev_crit(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int dev_alert(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int dev_err(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int dev_warn(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int dev_notice(const struct device *dev, const char *fmt, ...) -{ return 0; } -static inline __printf(2, 3) -int _dev_info(const struct device *dev, const char *fmt, ...) -{ return 0; } - -#endif - -/* - * Stupid hackaround for existing uses of non-printk uses dev_info - * - * Note that the definition of dev_info below is actually _dev_info - * and a macro is used to avoid redefining dev_info - */ - -#define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg) - -#if defined(CONFIG_DYNAMIC_DEBUG) -#define dev_dbg(dev, format, ...) \ -do { \ - dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \ -} while (0) -#elif defined(DEBUG) -#define dev_dbg(dev, format, arg...) \ - dev_printk(KERN_DEBUG, dev, format, ##arg) -#else -#define dev_dbg(dev, format, arg...) \ -({ \ - if (0) \ - dev_printk(KERN_DEBUG, dev, format, ##arg); \ - 0; \ -}) -#endif - -#ifdef VERBOSE_DEBUG -#define dev_vdbg dev_dbg -#else -#define dev_vdbg(dev, format, arg...) \ -({ \ - if (0) \ - dev_printk(KERN_DEBUG, dev, format, ##arg); \ - 0; \ -}) -#endif - -/* - * dev_WARN*() acts like dev_printk(), but with the key difference - * of using a WARN/WARN_ON to get the message out, including the - * file/line information and a backtrace. - */ -#define dev_WARN(dev, format, arg...) \ - WARN(1, "Device: %s\n" format, dev_driver_string(dev), ## arg); - -#define dev_WARN_ONCE(dev, condition, format, arg...) \ - WARN_ONCE(condition, "Device %s\n" format, \ - dev_driver_string(dev), ## arg) - -/* Create alias, so I can be autoloaded. */ -#define MODULE_ALIAS_CHARDEV(major,minor) \ - MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor)) -#define MODULE_ALIAS_CHARDEV_MAJOR(major) \ - MODULE_ALIAS("char-major-" __stringify(major) "-*") - -#ifdef CONFIG_SYSFS_DEPRECATED -extern long sysfs_deprecated; -#else -#define sysfs_deprecated 0 -#endif - -/** - * module_driver() - Helper macro for drivers that don't do anything - * special in module init/exit. This eliminates a lot of boilerplate. - * Each module may only use this macro once, and calling it replaces - * module_init() and module_exit(). - * - * @__driver: driver name - * @__register: register function for this driver type - * @__unregister: unregister function for this driver type - * @...: Additional arguments to be passed to __register and __unregister. - * - * Use this macro to construct bus specific macros for registering - * drivers, and do not use it on its own. - */ -#define module_driver(__driver, __register, __unregister, ...) \ -static int __init __driver##_init(void) \ -{ \ - return __register(&(__driver) , ##__VA_ARGS__); \ -} \ -module_init(__driver##_init); \ -static void __exit __driver##_exit(void) \ -{ \ - __unregister(&(__driver) , ##__VA_ARGS__); \ -} \ -module_exit(__driver##_exit); - -#endif /* _DEVICE_H_ */ |