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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131/* SPDX-License-Identifier: GPL-2.0+ */#ifndef _LINUX_OF_PLATFORM_H#define _LINUX_OF_PLATFORM_H/* * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp. * <benh@kernel.crashing.org> */
#include <linux/types.h>#include <linux/err.h>#include <linux/device-id/of.h>
struct device;struct device_node;struct of_device_id;struct platform_device;
/** * struct of_dev_auxdata - lookup table entry for device names & platform_data * @compatible: compatible value of node to match against node * @phys_addr: Start address of registers to match against node * @name: Name to assign for matching nodes * @platform_data: platform_data to assign for matching nodes * * This lookup table allows the caller of of_platform_populate() to override * the names of devices when creating devices from the device tree. The table * should be terminated with an empty entry. It also allows the platform_data * pointer to be set. * * The reason for this functionality is that some Linux infrastructure uses * the device name to look up a specific device, but the Linux-specific names * are not encoded into the device tree, so the kernel needs to provide specific * values. * * Note: Using an auxdata lookup table should be considered a last resort when * converting a platform to use the DT. Normally the automatically generated * device name will not matter, and drivers should obtain data from the device * node instead of from an anonymous platform_data pointer. */struct of_dev_auxdata { char *compatible; resource_size_t phys_addr; char *name; void *platform_data;};
/* Macro to simplify populating a lookup table */#define OF_DEV_AUXDATA(_compat,_phys,_name,_pdata) \ { .compatible = _compat, .phys_addr = _phys, .name = _name, \ .platform_data = _pdata }
/* Platform drivers register/unregister */extern struct platform_device *of_device_alloc(struct device_node *np, const char *bus_id, struct device *parent);
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);
#ifdef CONFIG_OFextern struct platform_device *of_find_device_by_node(struct device_node *np);#elsestatic inline struct platform_device *of_find_device_by_node(struct device_node *np){ return NULL;}#endif
extern int of_platform_bus_probe(struct device_node *root, const struct of_device_id *matches, struct device *parent);
#ifdef CONFIG_OF_ADDRESS/* Platform devices and busses creation */extern struct platform_device *of_platform_device_create(struct device_node *np, const char *bus_id, struct device *parent);
extern int of_platform_device_destroy(struct device *dev, void *data);
extern int of_platform_populate(struct device_node *root, const struct of_device_id *matches, const struct of_dev_auxdata *lookup, struct device *parent);extern int of_platform_default_populate(struct device_node *root, const struct of_dev_auxdata *lookup, struct device *parent);extern void of_platform_depopulate(struct device *parent);
extern int devm_of_platform_populate(struct device *dev);
extern void devm_of_platform_depopulate(struct device *dev);#else/* Platform devices and busses creation */static inline struct platform_device *of_platform_device_create(struct device_node *np, const char *bus_id, struct device *parent){ return NULL;}static inline int of_platform_device_destroy(struct device *dev, void *data){ return -ENODEV;}
static inline int of_platform_populate(struct device_node *root, const struct of_device_id *matches, const struct of_dev_auxdata *lookup, struct device *parent){ return -ENODEV;}static inline int of_platform_default_populate(struct device_node *root, const struct of_dev_auxdata *lookup, struct device *parent){ return -ENODEV;}static inline void of_platform_depopulate(struct device *parent) { }
static inline int devm_of_platform_populate(struct device *dev){ return -ENODEV;}
static inline void devm_of_platform_depopulate(struct device *dev) { }#endif
#endif /* _LINUX_OF_PLATFORM_H */