kernel-ark/include/linux/of_device.h
Grant Likely 7096d04221 of/device: Rework to use common platform_device_alloc() for allocating devices
The current code allocates and manages platform_devices created from
the device tree manually.  It also uses an unsafe shortcut for
allocating the platform_device and the resource table at the same
time. (which I added in the last rework; sorry).

This patch refactors the code to use platform_device_alloc() for
allocating new devices.  This reduces the amount of custom code
implemented by of_platform, eliminates the unsafe alloc trick, and has
the side benefit of letting the platform_bus code manage freeing the
device data and resources when the device is freed.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michal Simek <monstr@monstr.eu>
2010-10-21 11:10:10 -06:00

63 lines
1.7 KiB
C

#ifndef _LINUX_OF_DEVICE_H
#define _LINUX_OF_DEVICE_H
#include <linux/platform_device.h>
#include <linux/of_platform.h> /* temporary until merge */
#ifdef CONFIG_OF_DEVICE
#include <linux/device.h>
#include <linux/of.h>
#include <linux/mod_devicetable.h>
extern const struct of_device_id *of_match_device(
const struct of_device_id *matches, const struct device *dev);
extern void of_device_make_bus_id(struct device *dev);
/**
* of_driver_match_device - Tell if a driver's of_match_table matches a device.
* @drv: the device_driver structure to test
* @dev: the device structure to match against
*/
static inline int of_driver_match_device(const struct device *dev,
const struct device_driver *drv)
{
return of_match_device(drv->of_match_table, dev) != NULL;
}
extern struct platform_device *of_dev_get(struct platform_device *dev);
extern void of_dev_put(struct platform_device *dev);
extern int of_device_add(struct platform_device *pdev);
extern int of_device_register(struct platform_device *ofdev);
extern void of_device_unregister(struct platform_device *ofdev);
extern ssize_t of_device_get_modalias(struct device *dev,
char *str, ssize_t len);
extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
static inline void of_device_node_put(struct device *dev)
{
of_node_put(dev->of_node);
}
#else /* CONFIG_OF_DEVICE */
static inline int of_driver_match_device(struct device *dev,
struct device_driver *drv)
{
return 0;
}
static inline int of_device_uevent(struct device *dev,
struct kobj_uevent_env *env)
{
return -ENODEV;
}
static inline void of_device_node_put(struct device *dev) { }
#endif /* CONFIG_OF_DEVICE */
#endif /* _LINUX_OF_DEVICE_H */