* 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
*
#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/module.h>
#include <linux/pm.h>
-#include <asm/semaphore.h>
+#include <linux/semaphore.h>
#include <asm/atomic.h>
-
-#define DEVICE_NAME_SIZE 50
-#define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */
-#define DEVICE_ID_SIZE 32
-#define BUS_ID_SIZE KOBJ_NAME_LEN
-
+#include <asm/device.h>
struct device;
+struct device_private;
struct device_driver;
+struct driver_private;
struct class;
-struct class_device;
+struct class_private;
+struct bus_type;
+struct bus_type_private;
-struct bus_type {
- const char * name;
-
- struct subsystem subsys;
- struct kset drivers;
- struct kset devices;
- struct klist klist_devices;
- struct klist klist_drivers;
-
- 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, char **envp,
- int num_envp, char *buffer, int buffer_size);
- 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 (*suspend_late)(struct device * dev, pm_message_t state);
- int (*resume_early)(struct device * dev);
- int (*resume)(struct device * dev);
+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);
};
-extern int bus_register(struct bus_type * bus);
-extern void bus_unregister(struct bus_type * bus);
+#define BUS_ATTR(_name, _mode, _show, _store) \
+struct bus_attribute bus_attr_##_name = __ATTR(_name, _mode, _show, _store)
-extern void bus_rescan_devices(struct bus_type * bus);
-
-/* iterator helpers for buses */
+extern int __must_check bus_create_file(struct bus_type *,
+ struct bus_attribute *);
+extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
-int bus_for_each_dev(struct bus_type * bus, struct device * start, void * data,
- int (*fn)(struct device *, void *));
-struct device * bus_find_device(struct bus_type *bus, struct device *start,
- void *data, int (*match)(struct device *, void *));
+struct bus_type {
+ const char *name;
+ struct bus_attribute *bus_attrs;
+ struct device_attribute *dev_attrs;
+ struct driver_attribute *drv_attrs;
-int bus_for_each_drv(struct bus_type * bus, struct device_driver * start,
- void * data, int (*fn)(struct device_driver *, void *));
+ 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);
-/* driverfs interface for exporting bus attributes */
+ const struct dev_pm_ops *pm;
-struct bus_attribute {
- struct attribute attr;
- ssize_t (*show)(struct bus_type *, char * buf);
- ssize_t (*store)(struct bus_type *, const char * buf, size_t count);
+ struct bus_type_private *p;
};
-#define BUS_ATTR(_name,_mode,_show,_store) \
-struct bus_attribute bus_attr_##_name = __ATTR(_name,_mode,_show,_store)
+extern int __must_check bus_register(struct bus_type *bus);
+extern void bus_unregister(struct bus_type *bus);
-extern int bus_create_file(struct bus_type *, struct bus_attribute *);
-extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
+extern int __must_check bus_rescan_devices(struct bus_type *bus);
+
+/* iterator helpers for buses */
+
+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);
+
+int __must_check 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_BOUND_DRIVER 0x00000003 /* driver bound to device */
+#define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be
+ unbound */
+#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000005 /* 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 {
- const char * name;
- struct bus_type * bus;
+ const char *name;
+ struct bus_type *bus;
- struct completion unloaded;
- struct kobject kobj;
- struct klist klist_devices;
- struct klist_node knode_bus;
+ struct module *owner;
+ const char *mod_name; /* used for built-in modules */
- struct module * owner;
+ bool suppress_bind_attrs; /* disables bind/unbind via sysfs */
- 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);
+ 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 driver_register(struct device_driver * drv);
-extern void driver_unregister(struct device_driver * drv);
+extern int __must_check driver_register(struct device_driver *drv);
+extern void driver_unregister(struct device_driver *drv);
-extern struct device_driver * get_driver(struct device_driver * drv);
-extern void put_driver(struct device_driver * drv);
-extern struct device_driver *driver_find(const char *name, struct bus_type *bus);
+extern struct device_driver *get_driver(struct device_driver *drv);
+extern void put_driver(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);
-/* driverfs interface for exporting driver attributes */
+/* sysfs interface for exporting driver attributes */
struct driver_attribute {
- struct attribute attr;
- ssize_t (*show)(struct device_driver *, char * buf);
- ssize_t (*store)(struct device_driver *, const char * buf, size_t count);
+ 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)
+#define DRIVER_ATTR(_name, _mode, _show, _store) \
+struct driver_attribute driver_attr_##_name = \
+ __ATTR(_name, _mode, _show, _store)
-extern int driver_create_file(struct device_driver *, struct driver_attribute *);
-extern void driver_remove_file(struct device_driver *, struct driver_attribute *);
+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 driver_for_each_device(struct device_driver * drv, struct device * start,
- void * data, int (*fn)(struct device *, void *));
-struct device * driver_find_device(struct device_driver *drv,
- struct device *start, void *data,
- int (*match)(struct device *, void *));
+extern int __must_check driver_add_kobj(struct device_driver *drv,
+ struct kobject *kobj,
+ const char *fmt, ...);
+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));
/*
* device classes
*/
struct class {
- const char * name;
- struct module * owner;
-
- struct subsystem subsys;
- struct list_head children;
- struct list_head devices;
- struct list_head interfaces;
- struct semaphore sem; /* locks both the children and interfaces lists */
+ const char *name;
+ struct module *owner;
- struct class_attribute * class_attrs;
- struct class_device_attribute * class_dev_attrs;
+ struct class_attribute *class_attrs;
+ struct device_attribute *dev_attrs;
+ struct kobject *dev_kobj;
- int (*uevent)(struct class_device *dev, char **envp,
- int num_envp, char *buffer, int buffer_size);
+ int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
+ char *(*devnode)(struct device *dev, mode_t *mode);
- void (*release)(struct class_device *dev);
- void (*class_release)(struct class *class);
+ void (*class_release)(struct class *class);
+ void (*dev_release)(struct device *dev);
- int (*suspend)(struct device *, pm_message_t state);
- int (*resume)(struct device *);
-};
-
-extern int class_register(struct class *);
-extern void class_unregister(struct class *);
+ int (*suspend)(struct device *dev, pm_message_t state);
+ int (*resume)(struct device *dev);
+ const struct dev_pm_ops *pm;
-struct class_attribute {
- struct attribute attr;
- ssize_t (*show)(struct class *, char * buf);
- ssize_t (*store)(struct class *, const char * buf, size_t count);
+ struct class_private *p;
};
-#define CLASS_ATTR(_name,_mode,_show,_store) \
-struct class_attribute class_attr_##_name = __ATTR(_name,_mode,_show,_store)
-
-extern int class_create_file(struct class *, const struct class_attribute *);
-extern void class_remove_file(struct class *, const struct class_attribute *);
-
-struct class_device_attribute {
- struct attribute attr;
- ssize_t (*show)(struct class_device *, char * buf);
- ssize_t (*store)(struct class_device *, const char * buf, size_t count);
+struct class_dev_iter {
+ struct klist_iter ki;
+ const struct device_type *type;
};
-#define CLASS_DEVICE_ATTR(_name,_mode,_show,_store) \
-struct class_device_attribute class_device_attr_##_name = \
- __ATTR(_name,_mode,_show,_store)
-
-extern int class_device_create_file(struct class_device *,
- const struct class_device_attribute *);
+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_device - class devices
- * @class: pointer to the parent class for this class device. This is required.
- * @devt: for internal use by the driver core only.
- * @node: for internal use by the driver core only.
- * @kobj: for internal use by the driver core only.
- * @devt_attr: for internal use by the driver core only.
- * @groups: optional additional groups to be created
- * @dev: if set, a symlink to the struct device is created in the sysfs
- * directory for this struct class device.
- * @class_data: pointer to whatever you want to store here for this struct
- * class_device. Use class_get_devdata() and class_set_devdata() to get and
- * set this pointer.
- * @parent: pointer to a struct class_device that is the parent of this struct
- * class_device. If NULL, this class_device will show up at the root of the
- * struct class in sysfs (which is probably what you want to have happen.)
- * @release: pointer to a release function for this struct class_device. If
- * set, this will be called instead of the class specific release function.
- * Only use this if you want to override the default release function, like
- * when you are nesting class_device structures.
- * @uevent: pointer to a uevent function for this struct class_device. If
- * set, this will be called instead of the class specific uevent function.
- * Only use this if you want to override the default uevent function, like
- * when you are nesting class_device structures.
- */
-struct class_device {
- struct list_head node;
-
- struct kobject kobj;
- struct class * class; /* required */
- dev_t devt; /* dev_t, creates the sysfs "dev" */
- struct class_device_attribute *devt_attr;
- struct class_device_attribute uevent_attr;
- struct device * dev; /* not necessary, but nice to have */
- void * class_data; /* class-specific data */
- struct class_device *parent; /* parent of this child device, if there is one */
- struct attribute_group ** groups; /* optional groups */
-
- void (*release)(struct class_device *dev);
- int (*uevent)(struct class_device *dev, char **envp,
- int num_envp, char *buffer, int buffer_size);
- char class_id[BUS_ID_SIZE]; /* unique to this class */
+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);
};
-static inline void *
-class_get_devdata (struct class_device *dev)
-{
- return dev->class_data;
-}
-
-static inline void
-class_set_devdata (struct class_device *dev, void *data)
-{
- dev->class_data = data;
-}
+#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);
-extern int class_device_register(struct class_device *);
-extern void class_device_unregister(struct class_device *);
-extern void class_device_initialize(struct class_device *);
-extern int class_device_add(struct class_device *);
-extern void class_device_del(struct class_device *);
+/* Simple class attribute that is just a static string */
-extern int class_device_rename(struct class_device *, char *);
+struct class_attribute_string {
+ struct class_attribute attr;
+ char *str;
+};
-extern struct class_device * class_device_get(struct class_device *);
-extern void class_device_put(struct class_device *);
+/* 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 void class_device_remove_file(struct class_device *,
- const struct class_device_attribute *);
-extern int class_device_create_bin_file(struct class_device *,
- struct bin_attribute *);
-extern void class_device_remove_bin_file(struct class_device *,
- struct bin_attribute *);
+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) (struct class_device *, struct class_interface *);
- void (*remove) (struct class_device *, struct class_interface *);
+ int (*add_dev) (struct device *, struct class_interface *);
+ void (*remove_dev) (struct device *, struct class_interface *);
};
-extern int class_interface_register(struct class_interface *);
+extern int __must_check class_interface_register(struct class_interface *);
extern void class_interface_unregister(struct class_interface *);
-extern struct class *class_create(struct module *owner, const char *name);
+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);
-extern struct class_device *class_device_create(struct class *cls,
- struct class_device *parent,
- dev_t devt,
- struct device *device,
- const char *fmt, ...)
- __attribute__((format(printf,5,6)));
-extern void class_device_destroy(struct class *cls, dev_t devt);
+/* 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, mode_t *mode);
+ void (*release)(struct device *dev);
+
+ const struct dev_pm_ops *pm;
+};
/* interface for exporting device attributes */
struct device_attribute {
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_ATTR(_name, _mode, _show, _store) \
+struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
+
+extern int __must_check 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);
+
+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;
+};
-extern int device_create_file(struct device *device, struct device_attribute * entry);
-extern void device_remove_file(struct device * dev, struct device_attribute * attr);
struct device {
- struct klist klist_children;
- struct klist_node knode_parent; /* node in sibling list */
- struct klist_node knode_driver;
- struct klist_node knode_bus;
- struct device * parent;
+ struct device *parent;
+
+ struct device_private *p;
struct kobject kobj;
- char bus_id[BUS_ID_SIZE]; /* position on parent bus */
- struct device_attribute uevent_attr;
- struct device_attribute *devt_attr;
+ const char *init_name; /* initial name of the device */
+ struct device_type *type;
struct semaphore sem; /* semaphore to synchronize calls to
* its driver.
*/
- struct bus_type * bus; /* type of bus device is on */
+ struct bus_type *bus; /* type of bus device is on */
struct device_driver *driver; /* which driver has allocated this
device */
- void *driver_data; /* data private to the driver */
void *platform_data; /* Platform specific data, device
core doesn't touch it */
- void *firmware_data; /* Firmware specific data (e.g. ACPI,
- BIOS data),reserved for device core*/
struct dev_pm_info power;
+#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
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;
- /* class_device migration path */
- struct list_head node;
- struct class *class; /* optional*/
- dev_t devt; /* dev_t, creates the sysfs "dev" */
- struct attribute_group **groups; /* optional groups */
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+
+ spinlock_t devres_lock;
+ struct list_head devres_head;
- void (*release)(struct device * dev);
+ struct klist_node knode_class;
+ struct class *class;
+ const struct attribute_group **groups; /* optional groups */
+
+ void (*release)(struct device *dev);
};
-static inline void *
-dev_get_drvdata (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 int dev_set_name(struct device *dev, const char *name, ...)
+ __attribute__((format(printf, 2, 3)));
+
+#ifdef CONFIG_NUMA
+static inline int dev_to_node(struct device *dev)
{
- return dev->driver_data;
+ 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 void
-dev_set_drvdata (struct device *dev, void *data)
+static inline unsigned int dev_get_uevent_suppress(const struct device *dev)
{
- dev->driver_data = data;
+ 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 klist_node_attached(&dev->knode_bus);
+ return dev->kobj.state_in_sysfs;
+}
+
+static inline void device_enable_async_suspend(struct device *dev)
+{
+ if (dev->power.status == DPM_ON)
+ dev->power.async_suspend = true;
+}
+
+static inline void device_disable_async_suspend(struct device *dev)
+{
+ if (dev->power.status == DPM_ON)
+ dev->power.async_suspend = false;
}
+static inline bool device_async_suspend_enabled(struct device *dev)
+{
+ return !!dev->power.async_suspend;
+}
+
+static inline void device_lock(struct device *dev)
+{
+ down(&dev->sem);
+}
+
+static inline int device_trylock(struct device *dev)
+{
+ return down_trylock(&dev->sem);
+}
+
+static inline void device_unlock(struct device *dev)
+{
+ up(&dev->sem);
+}
+
+void driver_init(void);
+
/*
* High level routines for use by the bus drivers
*/
-extern int device_register(struct device * dev);
-extern void device_unregister(struct device * dev);
-extern void device_initialize(struct device * dev);
-extern int device_add(struct device * dev);
-extern void device_del(struct device * dev);
-extern int device_for_each_child(struct device *, void *,
- int (*fn)(struct device *, void *));
+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, 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,
+ mode_t *mode, const char **tmp);
+extern void *dev_get_drvdata(const struct device *dev);
+extern void 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);
+static inline struct device *root_device_register(const char *name)
+{
+ return __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 void device_bind_driver(struct device * dev);
-extern void device_release_driver(struct device * dev);
-extern int device_attach(struct device * dev);
-extern void driver_attach(struct device_driver * drv);
-extern void device_reprobe(struct device *dev);
+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 struct device *device_create(struct class *cls, struct device *parent,
- dev_t devt, const char *fmt, ...)
- __attribute__((format(printf,4,5)));
+ dev_t devt, void *drvdata,
+ const char *fmt, ...)
+ __attribute__((format(printf, 5, 6)));
extern void device_destroy(struct class *cls, dev_t devt);
/*
* know about.
*/
/* Notify platform of device discovery */
-extern int (*platform_notify)(struct device * dev);
+extern int (*platform_notify)(struct device *dev);
-extern int (*platform_notify_remove)(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 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);
-
-/* drivers/base/firmware.c */
-extern int firmware_register(struct subsystem *);
-extern void firmware_unregister(struct subsystem *);
+/* drivers/base/sys.c */
+extern void sysdev_shutdown(void);
/* debugging and troubleshooting/diagnostic helpers. */
-extern const char *dev_driver_string(struct device *dev);
+extern const char *dev_driver_string(const struct device *dev);
#define dev_printk(level, dev, format, arg...) \
- printk(level "%s %s: " format , dev_driver_string(dev) , (dev)->bus_id , ## arg)
-
-#ifdef DEBUG
-#define dev_dbg(dev, format, arg...) \
- dev_printk(KERN_DEBUG , dev , format , ## arg)
-#else
-#define dev_dbg(dev, format, arg...) do { (void)(dev); } while (0)
-#endif
-
+ printk(level "%s %s: " format , dev_driver_string(dev) , \
+ dev_name(dev) , ## arg)
+
+#define dev_emerg(dev, format, arg...) \
+ dev_printk(KERN_EMERG , dev , format , ## arg)
+#define dev_alert(dev, format, arg...) \
+ dev_printk(KERN_ALERT , dev , format , ## arg)
+#define dev_crit(dev, format, arg...) \
+ dev_printk(KERN_CRIT , dev , format , ## arg)
#define dev_err(dev, format, arg...) \
dev_printk(KERN_ERR , dev , format , ## arg)
-#define dev_info(dev, format, arg...) \
- dev_printk(KERN_INFO , dev , format , ## arg)
#define dev_warn(dev, format, arg...) \
dev_printk(KERN_WARNING , dev , format , ## arg)
#define dev_notice(dev, format, arg...) \
dev_printk(KERN_NOTICE , dev , format , ## arg)
+#define dev_info(dev, format, arg...) \
+ dev_printk(KERN_INFO , dev , format , ## arg)
+
+#if defined(DEBUG)
+#define dev_dbg(dev, format, arg...) \
+ dev_printk(KERN_DEBUG , dev , format , ## arg)
+#elif defined(CONFIG_DYNAMIC_DEBUG)
+#define dev_dbg(dev, format, ...) do { \
+ dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
+ } while (0)
+#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);
/* Create alias, so I can be autoloaded. */
#define MODULE_ALIAS_CHARDEV(major,minor) \
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff