1 #include <linux/string.h>
2 #include <linux/kernel.h>
4 #include <linux/of_device.h>
5 #include <linux/init.h>
6 #include <linux/module.h>
7 #include <linux/mod_devicetable.h>
8 #include <linux/slab.h>
10 #include <asm/errno.h>
13 * of_match_device - Tell if an of_device structure has a matching
15 * @ids: array of of device match structures to search in
16 * @dev: the of device structure to match against
18 * Used by a driver to check whether an of_device present in the
19 * system is in its list of supported devices.
21 const struct of_device_id
*of_match_device(const struct of_device_id
*matches
,
22 const struct of_device
*dev
)
26 return of_match_node(matches
, dev
->node
);
28 EXPORT_SYMBOL(of_match_device
);
30 struct of_device
*of_dev_get(struct of_device
*dev
)
36 tmp
= get_device(&dev
->dev
);
38 return to_of_device(tmp
);
42 EXPORT_SYMBOL(of_dev_get
);
44 void of_dev_put(struct of_device
*dev
)
47 put_device(&dev
->dev
);
49 EXPORT_SYMBOL(of_dev_put
);
51 static ssize_t
devspec_show(struct device
*dev
,
52 struct device_attribute
*attr
, char *buf
)
54 struct of_device
*ofdev
;
56 ofdev
= to_of_device(dev
);
57 return sprintf(buf
, "%s\n", ofdev
->node
->full_name
);
60 static ssize_t
modalias_show(struct device
*dev
,
61 struct device_attribute
*attr
, char *buf
)
63 struct of_device
*ofdev
= to_of_device(dev
);
66 len
= of_device_get_modalias(ofdev
, buf
, PAGE_SIZE
- 2);
72 struct device_attribute of_platform_device_attrs
[] = {
79 * of_release_dev - free an of device structure when all users of it are finished.
80 * @dev: device that's been disconnected
82 * Will be called only by the device core when all users of this of device are
85 void of_release_dev(struct device
*dev
)
87 struct of_device
*ofdev
;
89 ofdev
= to_of_device(dev
);
90 of_node_put(ofdev
->node
);
93 EXPORT_SYMBOL(of_release_dev
);
95 int of_device_register(struct of_device
*ofdev
)
97 BUG_ON(ofdev
->node
== NULL
);
98 return device_register(&ofdev
->dev
);
100 EXPORT_SYMBOL(of_device_register
);
102 void of_device_unregister(struct of_device
*ofdev
)
104 device_unregister(&ofdev
->dev
);
106 EXPORT_SYMBOL(of_device_unregister
);