summaryrefslogtreecommitdiff
path: root/include/linux/device.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h363
1 files changed, 192 insertions, 171 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index 2e15822fe409..db375be333c7 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -25,75 +25,72 @@
#include <asm/device.h>
#define DEVICE_NAME_SIZE 50
-#define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */
+/* DEVICE_NAME_HALF is really less than half to accommodate slop */
+#define DEVICE_NAME_HALF __stringify(20)
#define DEVICE_ID_SIZE 32
#define BUS_ID_SIZE KOBJ_NAME_LEN
struct device;
struct device_driver;
+struct driver_private;
struct class;
struct class_device;
struct bus_type;
+struct bus_type_private;
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);
+ 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)
+#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 {
- const char * name;
- struct module * owner;
+ const char *name;
+ struct bus_attribute *bus_attrs;
+ struct device_attribute *dev_attrs;
+ struct driver_attribute *drv_attrs;
- struct kset subsys;
- struct kset drivers;
- struct kset devices;
- struct klist klist_devices;
- struct klist klist_drivers;
-
- struct blocking_notifier_head bus_notifier;
-
- 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 (*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 (*suspend_late)(struct device * dev, pm_message_t state);
- int (*resume_early)(struct device * dev);
- int (*resume)(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);
- unsigned int drivers_autoprobe:1;
+ struct bus_type_private *p;
};
-extern int __must_check bus_register(struct bus_type * bus);
-extern void bus_unregister(struct bus_type * bus);
+extern int __must_check bus_register(struct bus_type *bus);
+extern void bus_unregister(struct bus_type *bus);
-extern int __must_check bus_rescan_devices(struct bus_type * bus);
+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 *, void *));
-struct device * bus_find_device(struct bus_type *bus, struct device *start,
- void *data, int (*match)(struct device *, void *));
+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 *));
+ struct device_driver *start, void *data,
+ int (*fn)(struct device_driver *, void *));
/*
* Bus notifiers: Get notified of addition/removal of devices
@@ -118,111 +115,128 @@ extern int bus_unregister_notifier(struct bus_type *bus,
#define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be
unbound */
+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 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;
- const char * mod_name; /* used for built-in modules */
- struct module_kobject * mkobj;
+ 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);
+ struct attribute_group **groups;
- 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);
+ struct driver_private *p;
};
-extern int __must_check 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);
/* 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 __must_check 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,
+ struct driver_attribute *attr);
+extern void driver_remove_file(struct device_driver *driver,
+ 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 *, 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;
+ const char *name;
+ struct module *owner;
struct kset subsys;
struct list_head children;
struct list_head devices;
struct list_head interfaces;
struct kset class_dirs;
- struct semaphore sem; /* locks both the children and interfaces lists */
-
- struct class_attribute * class_attrs;
- struct class_device_attribute * class_dev_attrs;
- struct device_attribute * dev_attrs;
+ struct semaphore sem; /* locks children, devices, interfaces */
+ struct class_attribute *class_attrs;
+ struct class_device_attribute *class_dev_attrs;
+ struct device_attribute *dev_attrs;
- int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env);
- int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
+ int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env);
+ int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
- void (*release)(struct class_device *dev);
- void (*class_release)(struct class *class);
- void (*dev_release)(struct device *dev);
+ void (*release)(struct class_device *dev);
+ void (*class_release)(struct class *class);
+ void (*dev_release)(struct device *dev);
- int (*suspend)(struct device *, pm_message_t state);
- int (*resume)(struct device *);
+ int (*suspend)(struct device *dev, pm_message_t state);
+ int (*resume)(struct device *dev);
};
-extern int __must_check class_register(struct class *);
-extern void class_unregister(struct class *);
+extern int __must_check class_register(struct class *class);
+extern void class_unregister(struct class *class);
+extern int class_for_each_device(struct class *class, void *data,
+ int (*fn)(struct device *dev, void *data));
+extern struct device *class_find_device(struct class *class, void *data,
+ int (*match)(struct device *, void *));
+extern struct class_device *class_find_child(struct class *class, void *data,
+ int (*match)(struct class_device *, void *));
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 attribute attr;
+ ssize_t (*show)(struct class *class, char *buf);
+ ssize_t (*store)(struct class *class, const char *buf, size_t count);
};
-#define CLASS_ATTR(_name,_mode,_show,_store) \
-struct class_attribute class_attr_##_name = __ATTR(_name,_mode,_show,_store)
+#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 *,
- const struct class_attribute *);
-extern void class_remove_file(struct class *, const struct class_attribute *);
+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);
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 attribute attr;
+ ssize_t (*show)(struct class_device *, char *buf);
+ ssize_t (*store)(struct class_device *, const char *buf, size_t count);
};
-#define CLASS_DEVICE_ATTR(_name,_mode,_show,_store) \
+#define CLASS_DEVICE_ATTR(_name, _mode, _show, _store) \
struct class_device_attribute class_device_attr_##_name = \
- __ATTR(_name,_mode,_show,_store)
+ __ATTR(_name, _mode, _show, _store)
extern int __must_check class_device_create_file(struct class_device *,
const struct class_device_attribute *);
@@ -255,26 +269,24 @@ struct class_device {
struct list_head node;
struct kobject kobj;
- struct class * class; /* required */
- dev_t devt; /* dev_t, creates the sysfs "dev" */
- 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, struct kobj_uevent_env *env);
- char class_id[BUS_ID_SIZE]; /* unique to this class */
+ struct class *class;
+ dev_t devt;
+ struct device *dev;
+ void *class_data;
+ struct class_device *parent;
+ struct attribute_group **groups;
+
+ void (*release)(struct class_device *dev);
+ int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env);
+ char class_id[BUS_ID_SIZE];
};
-static inline void *
-class_get_devdata (struct class_device *dev)
+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)
+static inline void class_set_devdata(struct class_device *dev, void *data)
{
dev->class_data = data;
}
@@ -286,10 +298,10 @@ extern void class_device_initialize(struct class_device *);
extern int __must_check class_device_add(struct class_device *);
extern void class_device_del(struct class_device *);
-extern struct class_device * class_device_get(struct class_device *);
+extern struct class_device *class_device_get(struct class_device *);
extern void class_device_put(struct class_device *);
-extern void class_device_remove_file(struct class_device *,
+extern void class_device_remove_file(struct class_device *,
const struct class_device_attribute *);
extern int __must_check class_device_create_bin_file(struct class_device *,
struct bin_attribute *);
@@ -316,7 +328,7 @@ extern struct class_device *class_device_create(struct class *cls,
dev_t devt,
struct device *device,
const char *fmt, ...)
- __attribute__((format(printf,5,6)));
+ __attribute__((format(printf, 5, 6)));
extern void class_device_destroy(struct class *cls, dev_t devt);
/*
@@ -333,8 +345,8 @@ struct device_type {
struct attribute_group **groups;
int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
void (*release)(struct device *dev);
- int (*suspend)(struct device * dev, pm_message_t state);
- int (*resume)(struct device * dev);
+ int (*suspend)(struct device *dev, pm_message_t state);
+ int (*resume)(struct device *dev);
};
/* interface for exporting device attributes */
@@ -346,18 +358,19 @@ 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,
- struct device_attribute * entry);
-extern void device_remove_file(struct device * dev, struct device_attribute * attr);
+ struct device_attribute *entry);
+extern void device_remove_file(struct device *dev,
+ struct device_attribute *attr);
extern int __must_check device_create_bin_file(struct device *dev,
struct bin_attribute *attr);
extern void device_remove_bin_file(struct device *dev,
struct bin_attribute *attr);
extern int device_schedule_callback_owner(struct device *dev,
- void (*func)(struct device *), struct module *owner);
+ 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) \
@@ -368,21 +381,21 @@ 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,
+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);
+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,
+extern void *devres_find(struct device *dev, dr_release_t release,
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 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);
@@ -399,7 +412,7 @@ extern void devm_kfree(struct device *dev, void *p);
struct device {
struct klist klist_children;
- struct klist_node knode_parent; /* node in sibling list */
+ struct klist_node knode_parent; /* node in sibling list */
struct klist_node knode_driver;
struct klist_node knode_bus;
struct device *parent;
@@ -414,7 +427,7 @@ struct device {
* 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 */
@@ -445,10 +458,10 @@ struct device {
/* class_device migration path */
struct list_head node;
struct class *class;
- dev_t devt; /* dev_t, creates the sysfs "dev" */
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
struct attribute_group **groups; /* optional groups */
- void (*release)(struct device * dev);
+ void (*release)(struct device *dev);
};
#ifdef CONFIG_NUMA
@@ -470,14 +483,12 @@ static inline void set_dev_node(struct device *dev, int node)
}
#endif
-static inline void *
-dev_get_drvdata (struct device *dev)
+static inline void *dev_get_drvdata(struct device *dev)
{
return dev->driver_data;
}
-static inline void
-dev_set_drvdata (struct device *dev, void *data)
+static inline void dev_set_drvdata(struct device *dev, void *data)
{
dev->driver_data = data;
}
@@ -492,15 +503,15 @@ 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 *, void *,
- int (*fn)(struct device *, void *));
-extern struct device *device_find_child(struct device *, void *data,
- int (*match)(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);
@@ -509,8 +520,8 @@ extern int device_move(struct device *dev, struct device *new_parent);
* 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 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);
@@ -519,8 +530,16 @@ extern int __must_check device_reprobe(struct device *dev);
*/
extern struct device *device_create(struct class *cls, struct device *parent,
dev_t devt, const char *fmt, ...)
- __attribute__((format(printf,4,5)));
+ __attribute__((format(printf, 4, 5)));
extern void device_destroy(struct class *cls, dev_t devt);
+#ifdef CONFIG_PM_SLEEP
+extern void destroy_suspended_device(struct class *cls, dev_t devt);
+#else /* !CONFIG_PM_SLEEP */
+static inline void destroy_suspended_device(struct class *cls, dev_t devt)
+{
+ device_destroy(cls, devt);
+}
+#endif /* !CONFIG_PM_SLEEP */
/*
* Platform "fixup" functions - allow the platform to have their say
@@ -528,17 +547,17 @@ 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);
/* drivers/base/power/shutdown.c */
@@ -547,22 +566,33 @@ extern void device_shutdown(void);
/* drivers/base/sys.c */
extern void sysdev_shutdown(void);
-
-/* drivers/base/firmware.c */
-extern int __must_check firmware_register(struct kset *);
-extern void firmware_unregister(struct kset *);
-
/* debugging and troubleshooting/diagnostic helpers. */
extern const char *dev_driver_string(struct device *dev);
#define dev_printk(level, dev, format, arg...) \
- printk(level "%s %s: " format , dev_driver_string(dev) , (dev)->bus_id , ## arg)
+ printk(level "%s %s: " format , dev_driver_string(dev) , \
+ (dev)->bus_id , ## 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_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)
#ifdef DEBUG
#define dev_dbg(dev, format, arg...) \
dev_printk(KERN_DEBUG , dev , format , ## arg)
#else
static inline int __attribute__ ((format (printf, 2, 3)))
-dev_dbg(struct device * dev, const char * fmt, ...)
+dev_dbg(struct device *dev, const char *fmt, ...)
{
return 0;
}
@@ -572,21 +602,12 @@ dev_dbg(struct device * dev, const char * fmt, ...)
#define dev_vdbg dev_dbg
#else
static inline int __attribute__ ((format (printf, 2, 3)))
-dev_vdbg(struct device * dev, const char * fmt, ...)
+dev_vdbg(struct device *dev, const char *fmt, ...)
{
return 0;
}
#endif
-#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)
-
/* Create alias, so I can be autoloaded. */
#define MODULE_ALIAS_CHARDEV(major,minor) \
MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor))
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-22 12:18:44 +0000