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, 59 struct device_node *np, 60 bool force_dma); 61 void of_dma_deconfigure(struct device *dev); 62 #else /* CONFIG_OF */ 63 64 static inline int of_driver_match_device(struct device *dev, 65 const struct device_driver *drv) 66 { 67 return 0; 68 } 69 70 static inline void of_device_uevent(struct device *dev, 71 struct kobj_uevent_env *env) { } 72 73 static inline const void *of_device_get_match_data(const struct device *dev) 74 { 75 return NULL; 76 } 77 78 static inline int of_device_modalias(struct device *dev, 79 char *str, ssize_t len) 80 { 81 return -ENODEV; 82 } 83 84 static inline int of_device_request_module(struct device *dev) 85 { 86 return -ENODEV; 87 } 88 89 static inline int of_device_uevent_modalias(struct device *dev, 90 struct kobj_uevent_env *env) 91 { 92 return -ENODEV; 93 } 94 95 static inline void of_device_node_put(struct device *dev) { } 96 97 static 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)) 104 105 static inline struct device_node *of_cpu_device_node_get(int cpu) 106 { 107 return NULL; 108 } 109 110 static inline int of_dma_configure(struct device *dev, 111 struct device_node *np, 112 bool force_dma) 113 { 114 return 0; 115 } 116 static inline void of_dma_deconfigure(struct device *dev) 117 {} 118 #endif /* CONFIG_OF */ 119 120 #endif /* _LINUX_OF_DEVICE_H */ 121