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 int of_device_add(struct platform_device *pdev);
  30 extern int of_device_register(struct platform_device *ofdev);
  31 extern void of_device_unregister(struct platform_device *ofdev);
  32
  33 extern const void *of_device_get_match_data(const struct device *dev);
  34
  35 extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
  36 extern int of_device_request_module(struct device *dev);
  37
  38 extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  39 extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
  40
  41 static 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
  50 int of_dma_configure_id(struct device *dev,
  51                      struct device_node *np,
  52                      bool force_dma, const u32 *id);
  53 static 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
  61 static inline int of_driver_match_device(struct device *dev,
  62                                          const struct device_driver *drv)
  63 {
  64         return 0;
  65 }
  66
  67 static inline void of_device_uevent(struct device *dev,
  68                         struct kobj_uevent_env *env) { }
  69
  70 static inline const void *of_device_get_match_data(const struct device *dev)
  71 {
  72         return NULL;
  73 }
  74
  75 static inline int of_device_modalias(struct device *dev,
  76                                      char *str, ssize_t len)
  77 {
  78         return -ENODEV;
  79 }
  80
  81 static inline int of_device_request_module(struct device *dev)
  82 {
  83         return -ENODEV;
  84 }
  85
  86 static inline int of_device_uevent_modalias(struct device *dev,
  87                                    struct kobj_uevent_env *env)
  88 {
  89         return -ENODEV;
  90 }
  91
  92 static 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
  98 static inline struct device_node *of_cpu_device_node_get(int cpu)
  99 {
 100         return NULL;
 101 }
 102
 103 static inline int of_dma_configure_id(struct device *dev,
 104                                    struct device_node *np,
 105                                    bool force_dma)
 106 {
 107         return 0;
 108 }
 109 static 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 */