include/linux/of_device.h

   1 #ifndef _LINUX_OF_DEVICE_H
   2 #define _LINUX_OF_DEVICE_H
   3
   4 /*
   5  * The of_device *was* a kind of "base class" that was a superset of
   6  * struct device for use by devices attached to an OF node and probed
   7  * using OF properties.  However, the important bit of OF-style
   8  * probing, namely the device node pointer, has been moved into the
   9  * common struct device when CONFIG_OF is set to make OF-style probing
  10  * available to all bus types.  So now, just make of_device and
  11  * platform_device equivalent so that current of_platform bus users
  12  * can be transparently migrated over to using the platform bus.
  13  *
  14  * This line will go away once all references to of_device are removed
  15  * from the kernel.
  16  */
  17 #define of_device platform_device
  18 #include <linux/platform_device.h>
  19 #include <linux/of_platform.h> /* temporary until merge */
  20
  21 #ifdef CONFIG_OF_DEVICE
  22 #include <linux/device.h>
  23 #include <linux/of.h>
  24 #include <linux/mod_devicetable.h>
  25
  26 #define to_of_device(d) container_of(d, struct of_device, dev)
  27
  28 extern const struct of_device_id *of_match_device(
  29         const struct of_device_id *matches, const struct device *dev);
  30 extern void of_device_make_bus_id(struct device *dev);
  31
  32 /**
  33  * of_driver_match_device - Tell if a driver's of_match_table matches a device.
  34  * @drv: the device_driver structure to test
  35  * @dev: the device structure to match against
  36  */
  37 static inline int of_driver_match_device(const struct device *dev,
  38                                          const struct device_driver *drv)
  39 {
  40         return of_match_device(drv->of_match_table, dev) != NULL;
  41 }
  42
  43 extern struct platform_device *of_dev_get(struct platform_device *dev);
  44 extern void of_dev_put(struct platform_device *dev);
  45
  46 extern int of_device_register(struct platform_device *ofdev);
  47 extern void of_device_unregister(struct platform_device *ofdev);
  48 extern void of_release_dev(struct device *dev);
  49
  50 static inline void of_device_free(struct platform_device *dev)
  51 {
  52         of_release_dev(&dev->dev);
  53 }
  54
  55 extern ssize_t of_device_get_modalias(struct device *dev,
  56                                         char *str, ssize_t len);
  57
  58 extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  59
  60
  61 #else /* CONFIG_OF_DEVICE */
  62
  63 static inline int of_driver_match_device(struct device *dev,
  64                                          struct device_driver *drv)
  65 {
  66         return 0;
  67 }
  68
  69 static inline int of_device_uevent(struct device *dev,
  70                                    struct kobj_uevent_env *env)
  71 {
  72         return -ENODEV;
  73 }
  74
  75 #endif /* CONFIG_OF_DEVICE */
  76
  77 #endif /* _LINUX_OF_DEVICE_H */