LXR linux/include/linux/of

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_OF_DEVICE_H
   3#define _LINUX_OF_DEVICE_H
   4
   5#include <linux/cpu.h>
   6#include <linux/platform_device.h>
   7#include <linux/of_platform.h> /* temporary until merge */
   8
   9#include <linux/of.h>
  10#include <linux/mod_devicetable.h>
  11
  12struct device;
  13
  14#ifdef CONFIG_OF
  15extern const struct of_device_id *of_match_device(
  16        const struct of_device_id *matches, const struct device *dev);
  17
  18/**
  19 * of_driver_match_device - Tell if a driver's of_match_table matches a device.
  20 * @drv: the device_driver structure to test
  21 * @dev: the device structure to match against
  22 */
  23static inline int of_driver_match_device(struct device *dev,
  24                                         const struct device_driver *drv)
  25{
  26        return of_match_device(drv->of_match_table, dev) != NULL;
  27}
  28
  29extern int of_device_add(struct platform_device *pdev);
  30extern int of_device_register(struct platform_device *ofdev);
  31extern void of_device_unregister(struct platform_device *ofdev);
  32
  33extern const void *of_device_get_match_data(const struct device *dev);
  34
  35extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
  36extern int of_device_request_module(struct device *dev);
  37
  38extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  39extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
  40
  41static inline struct device_node *of_cpu_device_node_get(int cpu)
  42{
  43        struct device *cpu_dev;
  44        cpu_dev = get_cpu_device(cpu);
  45        if (!cpu_dev)
  46                return of_get_cpu_node(cpu, NULL);
  47        return of_node_get(cpu_dev->of_node);
  48}
  49
  50int of_dma_configure_id(struct device *dev,
  51                     struct device_node *np,
  52                     bool force_dma, const u32 *id);
  53static inline int of_dma_configure(struct device *dev,
  54                                   struct device_node *np,
  55                                   bool force_dma)
  56{
  57        return of_dma_configure_id(dev, np, force_dma, NULL);
  58}
  59#else /* CONFIG_OF */
  60
  61static inline int of_driver_match_device(struct device *dev,
  62                                         const struct device_driver *drv)
  63{
  64        return 0;
  65}
  66
  67static inline void of_device_uevent(struct device *dev,
  68                        struct kobj_uevent_env *env) { }
  69
  70static inline const void *of_device_get_match_data(const struct device *dev)
  71{
  72        return NULL;
  73}
  74
  75static inline int of_device_modalias(struct device *dev,
  76                                     char *str, ssize_t len)
  77{
  78        return -ENODEV;
  79}
  80
  81static inline int of_device_request_module(struct device *dev)
  82{
  83        return -ENODEV;
  84}
  85
  86static inline int of_device_uevent_modalias(struct device *dev,
  87                                   struct kobj_uevent_env *env)
  88{
  89        return -ENODEV;
  90}
  91
  92static inline const struct of_device_id *of_match_device(
  93                const struct of_device_id *matches, const struct device *dev)
  94{
  95        return NULL;
  96}
  97
  98static inline struct device_node *of_cpu_device_node_get(int cpu)
  99{
 100        return NULL;
 101}
 102
 103static inline int of_dma_configure_id(struct device *dev,
 104                                   struct device_node *np,
 105                                   bool force_dma)
 106{
 107        return 0;
 108}
 109static inline int of_dma_configure(struct device *dev,
 110                                   struct device_node *np,
 111                                   bool force_dma)
 112{
 113        return 0;
 114}
 115#endif /* CONFIG_OF */
 116
 117#endif /* _LINUX_OF_DEVICE_H */
 118