include/linux/of_device.h

   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
  12 struct device;
  13
  14 #ifdef CONFIG_OF
  15 extern 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  */
  23 static 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
  29 extern struct platform_device *of_dev_get(struct platform_device *dev);
  30 extern void of_dev_put(struct platform_device *dev);
  31
  32 extern int of_device_add(struct platform_device *pdev);
  33 extern int of_device_register(struct platform_device *ofdev);
  34 extern void of_device_unregister(struct platform_device *ofdev);
  35
  36 extern const void *of_device_get_match_data(const struct device *dev);
  37
  38 extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
  39 extern int of_device_request_module(struct device *dev);
  40
  41 extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  42 extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
  43
  44 static inline void of_device_node_put(struct device *dev)
  45 {
  46         of_node_put(dev->of_node);
  47 }
  48
  49 static 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
  58 int of_dma_configure(struct device *dev, struct device_node *np);
  59 void of_dma_deconfigure(struct device *dev);
  60 #else /* CONFIG_OF */
  61
  62 static inline int of_driver_match_device(struct device *dev,
  63                                          const struct device_driver *drv)
  64 {
  65         return 0;
  66 }
  67
  68 static inline void of_device_uevent(struct device *dev,
  69                         struct kobj_uevent_env *env) { }
  70
  71 static inline const void *of_device_get_match_data(const struct device *dev)
  72 {
  73         return NULL;
  74 }
  75
  76 static inline int of_device_modalias(struct device *dev,
  77                                      char *str, ssize_t len)
  78 {
  79         return -ENODEV;
  80 }
  81
  82 static inline int of_device_request_module(struct device *dev)
  83 {
  84         return -ENODEV;
  85 }
  86
  87 static inline int of_device_uevent_modalias(struct device *dev,
  88                                    struct kobj_uevent_env *env)
  89 {
  90         return -ENODEV;
  91 }
  92
  93 static inline void of_device_node_put(struct device *dev) { }
  94
  95 static inline const struct of_device_id *__of_match_device(
  96                 const struct of_device_id *matches, const struct device *dev)
  97 {
  98         return NULL;
  99 }
 100 #define of_match_device(matches, dev)   \
 101         __of_match_device(of_match_ptr(matches), (dev))
 102
 103 static inline struct device_node *of_cpu_device_node_get(int cpu)
 104 {
 105         return NULL;
 106 }
 107
 108 static inline int of_dma_configure(struct device *dev, struct device_node *np)
 109 {
 110         return 0;
 111 }
 112 static inline void of_dma_deconfigure(struct device *dev)
 113 {}
 114 #endif /* CONFIG_OF */
 115
 116 #endif /* _LINUX_OF_DEVICE_H */