614 lines
20 KiB
C
614 lines
20 KiB
C
/*
|
|
* device.h - generic, centralized driver model
|
|
*
|
|
* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
|
|
* Copyright (c) 2004-2007 Greg Kroah-Hartman <gregkh@suse.de>
|
|
*
|
|
* 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/compiler.h>
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pm.h>
|
|
#include <asm/semaphore.h>
|
|
#include <asm/atomic.h>
|
|
#include <asm/device.h>
|
|
|
|
#define DEVICE_NAME_SIZE 50
|
|
/* 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 *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 {
|
|
const char *name;
|
|
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 (*suspend_late)(struct device *dev, pm_message_t state);
|
|
int (*resume_early)(struct device *dev);
|
|
int (*resume)(struct device *dev);
|
|
|
|
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_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));
|
|
|
|
int __must_check bus_for_each_drv(struct bus_type *bus,
|
|
struct device_driver *start, void *data,
|
|
int (*fn)(struct device_driver *, void *));
|
|
|
|
/*
|
|
* 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 semaphore 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 */
|
|
|
|
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;
|
|
|
|
struct module *owner;
|
|
const char *mod_name; /* used for built-in modules */
|
|
|
|
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;
|
|
|
|
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 *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 *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,
|
|
struct driver_attribute *attr);
|
|
extern void driver_remove_file(struct device_driver *driver,
|
|
struct driver_attribute *attr);
|
|
|
|
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 kset subsys;
|
|
struct list_head children;
|
|
struct list_head devices;
|
|
struct list_head interfaces;
|
|
struct kset class_dirs;
|
|
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);
|
|
|
|
void (*release)(struct class_device *dev);
|
|
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);
|
|
};
|
|
|
|
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 *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)
|
|
|
|
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);
|
|
};
|
|
|
|
#define CLASS_DEVICE_ATTR(_name, _mode, _show, _store) \
|
|
struct class_device_attribute class_device_attr_##_name = \
|
|
__ATTR(_name, _mode, _show, _store)
|
|
|
|
extern int __must_check class_device_create_file(struct class_device *,
|
|
const struct class_device_attribute *);
|
|
|
|
/**
|
|
* 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.
|
|
* @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;
|
|
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)
|
|
{
|
|
return dev->class_data;
|
|
}
|
|
|
|
static inline void class_set_devdata(struct class_device *dev, void *data)
|
|
{
|
|
dev->class_data = data;
|
|
}
|
|
|
|
|
|
extern int __must_check class_device_register(struct class_device *);
|
|
extern void class_device_unregister(struct class_device *);
|
|
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 void class_device_put(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 *);
|
|
extern void class_device_remove_bin_file(struct class_device *,
|
|
struct bin_attribute *);
|
|
|
|
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 __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 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);
|
|
|
|
/*
|
|
* 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;
|
|
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);
|
|
};
|
|
|
|
/* 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);
|
|
};
|
|
|
|
#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);
|
|
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 *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 {
|
|
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 kobject kobj;
|
|
char bus_id[BUS_ID_SIZE]; /* position on parent bus */
|
|
struct device_type *type;
|
|
unsigned is_registered:1;
|
|
unsigned uevent_suppress:1;
|
|
|
|
struct semaphore sem; /* semaphore 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 *driver_data; /* data private to the driver */
|
|
void *platform_data; /* Platform specific data, device
|
|
core doesn't touch it */
|
|
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
|
|
not all hardware supports
|
|
64 bit addresses for consistent
|
|
allocations such descriptors. */
|
|
|
|
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;
|
|
|
|
spinlock_t devres_lock;
|
|
struct list_head devres_head;
|
|
|
|
/* class_device migration path */
|
|
struct list_head node;
|
|
struct class *class;
|
|
dev_t devt; /* dev_t, creates the sysfs "dev" */
|
|
struct attribute_group **groups; /* optional groups */
|
|
|
|
void (*release)(struct device *dev);
|
|
};
|
|
|
|
#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 void *dev_get_drvdata(struct device *dev)
|
|
{
|
|
return dev->driver_data;
|
|
}
|
|
|
|
static inline void dev_set_drvdata(struct device *dev, void *data)
|
|
{
|
|
dev->driver_data = data;
|
|
}
|
|
|
|
static inline int device_is_registered(struct device *dev)
|
|
{
|
|
return dev->is_registered;
|
|
}
|
|
|
|
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, char *new_name);
|
|
extern int device_move(struct device *dev, struct device *new_parent);
|
|
|
|
/*
|
|
* 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(struct class *cls, struct device *parent,
|
|
dev_t devt, const char *fmt, ...)
|
|
__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
|
|
* 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);
|
|
|
|
|
|
/* drivers/base/power/shutdown.c */
|
|
extern void device_shutdown(void);
|
|
|
|
/* drivers/base/sys.c */
|
|
extern void sysdev_shutdown(void);
|
|
|
|
/* 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)
|
|
|
|
#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, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
#define dev_vdbg dev_dbg
|
|
#else
|
|
static inline int __attribute__ ((format (printf, 2, 3)))
|
|
dev_vdbg(struct device *dev, const char *fmt, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* 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) "-*")
|
|
#endif /* _DEVICE_H_ */
|