921*/922#definemodule_i2c_driver(__i2c_driver) \923module_driver(__i2c_driver, i2c_add_driver, \924i2c_del_driver) 里面用到 module_driver 也是一个宏,用于简化 重复代码 ; 第一个参数是 struct i2c_driver 对象的名称 ; 是对象的名称,宏内部会对其进行 取地址 操作 ; 第二个参数是 自动生成函数...
了解了上面定义的宏,对于module_i2c_driver(imx588_i2c_driver), 则可以按照宏展开成: static int __init imx588_i2c_driver_init(void) { return i2c_add_driver(&imx588_i2c_driver); } module_init(imx588_i2c_driver_init); static void __exit imx588_i2c_drive_exit(void) { i2c_del_driver(&...
drivers/mfd/menelaus.c | 23 +--- 1 file changed, 1 insertion(+), 22 deletions(-)
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Linux I2C Device Driver for TEA5767 Radio Tuner Module using sysfs. - SLBiuBiu/tea5767_kernel_driver
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module_init(__driver##_init); \ static void __exit __driver##_exit(void) \ { \ __unregister(&(__driver) , ##__VA_ARGS__); \ } \ module_exit(__driver##_exit); 理解上述宏定义后,将module_i2c_driver(adxl34x_driver)展开就可以得到: ...