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);
  61void of_dma_deconfigure(struct device *dev);
  62#else /* CONFIG_OF */
  63
  64static inline int of_driver_match_device(struct device *dev,
  65                                         const struct device_driver *drv)
  66{
  67        return 0;
  68}
  69
  70static inline void of_device_uevent(struct device *dev,
  71                        struct kobj_uevent_env *env) { }
  72
  73static inline const void *of_device_get_match_data(const struct device *dev)
  74{
  75        return NULL;
  76}
  77
  78static inline int of_device_modalias(struct device *dev,
  79                                     char *str, ssize_t len)
  80{
  81        return -ENODEV;
  82}
  83
  84static inline int of_device_request_module(struct device *dev)
  85{
  86        return -ENODEV;
  87}
  88
  89static inline int of_device_uevent_modalias(struct device *dev,
  90                                   struct kobj_uevent_env *env)
  91{
  92        return -ENODEV;
  93}
  94
  95static inline void of_device_node_put(struct device *dev) { }
  96
  97static inline const struct of_device_id *__of_match_device(
  98                const struct of_device_id *matches, const struct device *dev)
  99{
 100        return NULL;
 101}
 102#define of_match_device(matches, dev)   \
 103        __of_match_device(of_match_ptr(matches), (dev))
 104
 105static inline struct device_node *of_cpu_device_node_get(int cpu)
 106{
 107        return NULL;
 108}
 109
 110static inline int of_dma_configure(struct device *dev,
 111                                   struct device_node *np,
 112                                   bool force_dma)
 113{
 114        return 0;
 115}
 116static inline void of_dma_deconfigure(struct device *dev)
 117{}
 118#endif /* CONFIG_OF */
 119
 120#endif /* _LINUX_OF_DEVICE_H */
 121