8cec0e7b4c
Add of_driver_match_device() helper function. This function can be used by bus types to determine if a driver works with a device when using OF style matching. If CONFIG_OF is unselected, then it is a nop. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Greg Kroah-Hartman <gregkh@suse.de> CC: Michal Simek <monstr@monstr.eu> CC: Grant Likely <grant.likely@secretlab.ca> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: linux-kernel@vger.kernel.org CC: microblaze-uclinux@itee.uq.edu.au CC: linuxppc-dev@ozlabs.org CC: devicetree-discuss@lists.ozlabs.org
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
#ifndef _LINUX_OF_DEVICE_H
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#define _LINUX_OF_DEVICE_H
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#ifdef CONFIG_OF_DEVICE
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/mod_devicetable.h>
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/*
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* The of_device *was* a kind of "base class" that was a superset of
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* struct device for use by devices attached to an OF node and probed
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* using OF properties. However, the important bit of OF-style
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* probing, namely the device node pointer, has been moved into the
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* common struct device when CONFIG_OF is set to make OF-style probing
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* available to all bus types. So now, just make of_device and
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* platform_device equivalent so that current of_platform bus users
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* can be transparently migrated over to using the platform bus.
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*
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* This line will go away once all references to of_device are removed
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* from the kernel.
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*/
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#define of_device platform_device
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#include <asm/of_device.h>
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#define to_of_device(d) container_of(d, struct of_device, dev)
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extern const struct of_device_id *of_match_device(
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const struct of_device_id *matches, const struct device *dev);
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/**
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* of_driver_match_device - Tell if a driver's of_match_table matches a device.
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* @drv: the device_driver structure to test
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* @dev: the device structure to match against
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*/
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static inline int of_driver_match_device(const struct device *dev,
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const struct device_driver *drv)
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{
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return of_match_device(drv->of_match_table, dev) != NULL;
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}
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extern struct of_device *of_dev_get(struct of_device *dev);
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extern void of_dev_put(struct of_device *dev);
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extern int of_device_register(struct of_device *ofdev);
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extern void of_device_unregister(struct of_device *ofdev);
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extern void of_release_dev(struct device *dev);
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static inline void of_device_free(struct of_device *dev)
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{
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of_release_dev(&dev->dev);
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}
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extern ssize_t of_device_get_modalias(struct device *dev,
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char *str, ssize_t len);
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extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
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#else /* CONFIG_OF_DEVICE */
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static inline int of_driver_match_device(struct device *dev,
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struct device_driver *drv)
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{
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return 0;
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}
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#endif /* CONFIG_OF_DEVICE */
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#endif /* _LINUX_OF_DEVICE_H */
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