飞凌嵌入式ElfBoard ELF 1板卡-I2C设备驱动之I2C驱动构建流程

&nbspunsigned int class;

&nbspint (*attach_adapter)(struct i2c_adapter *);

&nbspint (*detach_adapter)(struct i2c_adapter *);

&nbspint (*probe)(struct i2c_client *, const struct i2c_device_id *);

&nbspint (*remove)(struct i2c_client *);

&nbspvoid (*shutdown)(struct i2c_client *);

&nbspint (*suspend)(struct i2c_client *, pm_message_t mesg);

&nbspint (*resume)(struct i2c_client *);

&nbspvoid (*alert)(struct i2c_client *, unsigned int data);

&nbspint (*command)(struct i2c_client *client, unsigned int cmd, void*arg);

&nbspstruct device_driver driver;

&nbspconst struct i2c_device_id *id_table;

&nbspint (*detect)(struct i2c_client *, struct i2c_board_info *);

&nbspconst unsigned short *address_list;

&nbspstruct list_head clients;

};

static int my_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)

{

// I2C设备探测函数，处理设备初始化和配置

// ...

return 0;

}

static int my_i2c_remove(struct i2c_client *client)

{

// I2C设备移除函数，处理设备的清理操作

// ...

return 0;

}

//传统匹配方式 ID 列表

static const struct i2c_device_id my_i2c_id[] = {

{ "my_i2c_device", 0 },

{ }

};

//设备树匹配列表

static const struct of_device_id my_i2c_of_match[] = {

&nbsp&nbsp{ .compatible = "my_i2c_device" },

&nbsp&nbsp{ /* Sentinel */ }

};

MODULE_DEVICE_TABLE(i2c, my_i2c_id);

static struct i2c_driver my_i2c_driver = {

.driver = {

.name = "my_i2c_driver",

.owner = THIS_MODULE,

.of_match_table = my_i2c_of_match

},

.probe = my_i2c_probe,

.remove = my_i2c_remove,

.id_table = my_i2c_id,

};

// 驱动程序初始化函数

static int __init my_i2c_driver_init(void)

{

return i2c_add_driver(&my_i2c_driver);

}

// 驱动程序卸载函数

static void __exit my_i2c_driver_exit(void)

{

i2c_del_driver(&my_i2c_driver);

}

module_init(my_i2c_driver_init);

module_exit(my_i2c_driver_exit);

MODULE_AUTHOR("Your Name");

MODULE_DESCRIPTION("Sample I2C Driver");

MODULE_LICENSE("GPL");