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Merge "libhardware: add current HAL version and a module version macro"

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Dima Zavin 2012-03-21 10:44:43 -07:00 committed by Android (Google) Code Review
commit b0bef12f79
1 changed files with 23 additions and 0 deletions
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include/hardware/hardware.h
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@ -34,6 +34,29 @@ __BEGIN_DECLS
#define HARDWARE_MODULE_TAG MAKE_TAG_CONSTANT('H', 'W', 'M', 'T')
#define HARDWARE_DEVICE_TAG MAKE_TAG_CONSTANT('H', 'W', 'D', 'T')
#define HARDWARE_MAKE_API_VERSION(maj,min) \
((((maj) & 0xff) << 8) | ((min) & 0xff))
/*
* The current HAL API version.
*
* All module implementations must set the hw_module_t.hal_api_version field
* to this value when declaring the module with HAL_MODULE_INFO_SYM.
*
* Note that previous implementations have always set this field to 0.
* Therefore, libhardware HAL API will always consider versions 0.0 and 1.0
* to be 100% binary compatible.
*
*/
#define HARDWARE_HAL_API_VERSION HARDWARE_MAKE_API_VERSION(1, 0)
/*
* Helper macro for module implementors.
*
* Use this macro to set the hw_module_t.module_api_version field.
*/
#define HARDWARE_MODULE_API_VERSION(maj,min) HARDWARE_MAKE_API_VERSION(maj,min)
struct hw_module_t;
struct hw_module_methods_t;
struct hw_device_t;