1 #ifndef __HARDWARE_HARDWARE_H 2 #define __HARDWARE_HARDWARE_H 3 4 #include <stdint.h> 5 6 #define MAKE_TAG_CONSTANT(A,B,C,D) (((A) << 24) | ((B) << 16) | ((C) << 8) | (D)) 7 8 #define HARDWARE_MODULE_TAG MAKE_TAG_CONSTANT('H', 'W', 'M', 'T') 9 #define HARDWARE_DEVICE_TAG MAKE_TAG_CONSTANT('H', 'W', 'D', 'T') 10 11 #define HARDWARE_HAL_API_VERSION 0 12 13 struct hw_module_t; 14 struct hw_module_methods_t; 15 struct hw_device_t; 16 17 typedef struct hw_module_t { 18 uint32_t tag; 19 uint16_t module_api_version; 20 uint16_t hal_api_version; 21 const char *id; 22 const char *name; 23 const char *author; 24 struct hw_module_methods_t* methods; 25 void* dso; 26 } hw_module_t; 27 28 typedef struct hw_module_methods_t { 29 int (*open)(const struct hw_module_t* module, const char* id, 30 struct hw_device_t** device); 31 } hw_module_methods_t; 32 33 typedef struct hw_device_t { 34 uint32_t tag; 35 uint32_t version; 36 struct hw_module_t* module; 37 int (*close)(struct hw_device_t* device); 38 } hw_device_t; 39 40 #endif 41
