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3386e0fa90
It's a common operation for device drivers to retrive the data
member from of_device_id struct in their probe function.
Most driver end up doing:
const struct of_device_id *match;
match = of_match_device(driver_of_match, &pdev->dev);
driver->data = match->data;
With the of_device_get_match_data helper function all this can
done in one go.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
[robh: add missing inline to dummmy declaration]
Signed-off-by: Rob Herring <robh@kernel.org>
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
#ifndef _LINUX_OF_DEVICE_H
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#define _LINUX_OF_DEVICE_H
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#include <linux/cpu.h>
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#include <linux/platform_device.h>
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#include <linux/of_platform.h> /* temporary until merge */
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#include <linux/of.h>
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#include <linux/mod_devicetable.h>
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struct device;
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#ifdef CONFIG_OF
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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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extern void of_device_make_bus_id(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(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 platform_device *of_dev_get(struct platform_device *dev);
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extern void of_dev_put(struct platform_device *dev);
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extern int of_device_add(struct platform_device *pdev);
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extern int of_device_register(struct platform_device *ofdev);
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extern void of_device_unregister(struct platform_device *ofdev);
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extern const void *of_device_get_match_data(const struct device *dev);
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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 void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
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extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
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static inline void of_device_node_put(struct device *dev)
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{
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of_node_put(dev->of_node);
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}
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static inline struct device_node *of_cpu_device_node_get(int cpu)
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{
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struct device *cpu_dev;
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cpu_dev = get_cpu_device(cpu);
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if (!cpu_dev)
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return NULL;
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return of_node_get(cpu_dev->of_node);
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}
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void of_dma_configure(struct device *dev, struct device_node *np);
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#else /* CONFIG_OF */
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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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static inline void of_device_uevent(struct device *dev,
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struct kobj_uevent_env *env) { }
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static inline const void *of_device_get_match_data(const struct device *dev)
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{
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return NULL;
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}
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static inline int of_device_get_modalias(struct device *dev,
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char *str, ssize_t len)
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{
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return -ENODEV;
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}
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static inline int of_device_uevent_modalias(struct device *dev,
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struct kobj_uevent_env *env)
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{
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return -ENODEV;
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}
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static inline void of_device_node_put(struct device *dev) { }
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static inline 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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return NULL;
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}
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#define of_match_device(matches, dev) \
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__of_match_device(of_match_ptr(matches), (dev))
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static inline struct device_node *of_cpu_device_node_get(int cpu)
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{
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return NULL;
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}
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static inline void of_dma_configure(struct device *dev, struct device_node *np)
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{}
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#endif /* CONFIG_OF */
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#endif /* _LINUX_OF_DEVICE_H */
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