diff options
Diffstat (limited to 'include/linux/device.h')
| -rw-r--r-- | include/linux/device.h | 151 |
1 files changed, 113 insertions, 38 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 182192892d4..516fecacf27 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -22,7 +22,6 @@ #include <linux/types.h> #include <linux/module.h> #include <linux/pm.h> -#include <linux/semaphore.h> #include <asm/atomic.h> #include <asm/device.h> @@ -34,6 +33,7 @@ struct class; struct class_private; struct bus_type; struct bus_type_private; +struct device_node; struct bus_attribute { struct attribute attr; @@ -84,9 +84,8 @@ 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 *)); +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, @@ -110,10 +109,12 @@ extern int bus_unregister_notifier(struct bus_type *bus, */ #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 +#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 0x00000005 /* driver is unbound +#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000006 /* driver is unbound from the device */ extern struct kset *bus_get_kset(struct bus_type *bus); @@ -128,6 +129,10 @@ struct device_driver { bool suppress_bind_attrs; /* disables bind/unbind via sysfs */ +#if defined(CONFIG_OF) + const struct of_device_id *of_match_table; +#endif + int (*probe) (struct device *dev); int (*remove) (struct device *dev); void (*shutdown) (struct device *dev); @@ -203,6 +208,9 @@ struct class { 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 class_private *p; @@ -404,7 +412,7 @@ struct device { const char *init_name; /* initial name of the device */ struct device_type *type; - struct semaphore sem; /* semaphore to synchronize calls to + struct mutex mutex; /* mutex to synchronize calls to * its driver. */ @@ -433,6 +441,9 @@ struct device { override */ /* arch specific additions */ struct dev_archdata archdata; +#ifdef CONFIG_OF + struct device_node *of_node; +#endif dev_t devt; /* dev_t, creates the sysfs "dev" */ @@ -451,6 +462,10 @@ struct device { 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); } @@ -510,17 +525,17 @@ static inline bool device_async_suspend_enabled(struct device *dev) static inline void device_lock(struct device *dev) { - down(&dev->sem); + mutex_lock(&dev->mutex); } static inline int device_trylock(struct device *dev) { - return down_trylock(&dev->sem); + return mutex_trylock(&dev->mutex); } static inline void device_unlock(struct device *dev) { - up(&dev->sem); + mutex_unlock(&dev->mutex); } void driver_init(void); @@ -537,7 +552,7 @@ 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_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, @@ -624,43 +639,103 @@ extern void sysdev_shutdown(void); /* debugging and troubleshooting/diagnostic helpers. */ 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_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_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 CONFIG_PRINTK + +extern int dev_printk(const char *level, const struct device *dev, + const char *fmt, ...) + __attribute__ ((format (printf, 3, 4))); +extern int dev_emerg(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int dev_alert(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int dev_crit(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int dev_err(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int dev_warn(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int dev_notice(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern int _dev_info(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); + +#else + +static inline int dev_printk(const char *level, const struct device *dev, + const char *fmt, ...) + __attribute__ ((format (printf, 3, 4))); +static inline int dev_printk(const char *level, const struct device *dev, + const char *fmt, ...) + { return 0; } + +static inline int dev_emerg(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_emerg(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int dev_crit(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_crit(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int dev_alert(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_alert(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int dev_err(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_err(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int dev_warn(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_warn(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int dev_notice(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline int dev_notice(const struct device *dev, const char *fmt, ...) + { return 0; } +static inline int _dev_info(const struct device *dev, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +static inline 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(DEBUG) #define dev_dbg(dev, format, arg...) \ - dev_printk(KERN_DEBUG , dev , format , ## arg) + dev_printk(KERN_DEBUG, dev, format, ##arg) #elif defined(CONFIG_DYNAMIC_DEBUG) -#define dev_dbg(dev, format, ...) do { \ +#define dev_dbg(dev, format, ...) \ +do { \ dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \ - } while (0) +} while (0) #else -#define dev_dbg(dev, format, arg...) \ - ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) +#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; }) +#define dev_vdbg(dev, format, arg...) \ +({ \ + if (0) \ + dev_printk(KERN_DEBUG, dev, format, ##arg); \ + 0; \ +}) #endif /* |