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 struct platform_device *of_dev_get(struct platform_device *dev);
  30extern void of_dev_put(struct platform_device *dev);
  31
  32extern int of_device_add(struct platform_device *pdev);
  33extern int of_device_register(struct platform_device *ofdev);
  34extern void of_device_unregister(struct platform_device *ofdev);
  35
  36extern const void *of_device_get_match_data(const struct device *dev);
  37
  38extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
  39extern int of_device_request_module(struct device *dev);
  40
  41extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  42extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
  43
  44static inline void of_device_node_put(struct device *dev)
  45{
  46        of_node_put(dev->of_node);
  47}
  48
  49static inline struct device_node *of_cpu_device_node_get(int cpu)
  50{
  51        struct device *cpu_dev;
  52        cpu_dev = get_cpu_device(cpu);
  53        if (!cpu_dev)
  54                return of_get_cpu_node(cpu, NULL);
  55        return of_node_get(cpu_dev->of_node);
  56}
  57
  58int of_dma_configure(struct device *dev,
  59                     struct device_node *np,
  60                     bool force_dma);
  61#else /* CONFIG_OF */
  62
  63static inline int of_driver_match_device(struct device *dev,
  64                                         const struct device_driver *drv)
  65{
  66        return 0;
  67}
  68
  69static inline void of_device_uevent(struct device *dev,
  70                        struct kobj_uevent_env *env) { }
  71
  72static inline const void *of_device_get_match_data(const struct device *dev)
  73{
  74        return NULL;
  75}
  76
  77static inline int of_device_modalias(struct device *dev,
  78                                     char *str, ssize_t len)
  79{
  80        return -ENODEV;
  81}
  82
  83static inline int of_device_request_module(struct device *dev)
  84{
  85        return -ENODEV;
  86}
  87
  88static inline int of_device_uevent_modalias(struct device *dev,
  89                                   struct kobj_uevent_env *env)
  90{
  91        return -ENODEV;
  92}
  93
  94static inline void of_device_node_put(struct device *dev) { }
  95
  96static inline const struct of_device_id *__of_match_device(
  97                const struct of_device_id *matches, const struct device *dev)
  98{
  99        return NULL;
 100}
 101#define of_match_device(matches, dev)   \
 102        __of_match_device(of_match_ptr(matches), (dev))
 103
 104static inline struct device_node *of_cpu_device_node_get(int cpu)
 105{
 106        return NULL;
 107}
 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