[drivers/i2c] optimize i2c driver framework

components/drivers/i2c/i2c_dev.c

@@ -77,9 +77,6 @@ static rt_err_t i2c_bus_device_control(rt_device_t dev,
     case RT_I2C_DEV_CTRL_10BIT:
         bus->flags |= RT_I2C_ADDR_10BIT;
         break;
-    case RT_I2C_DEV_CTRL_ADDR:
-        bus->addr = *(rt_uint16_t *)args;
-        break;
     case RT_I2C_DEV_CTRL_TIMEOUT:
         bus->timeout = *(rt_uint32_t *)args;
         break;

components/drivers/include/drivers/i2c.h

@@ -55,7 +55,6 @@ struct rt_i2c_bus_device
     struct rt_device parent;
     const struct rt_i2c_bus_device_ops *ops;
     rt_uint16_t  flags;
-    rt_uint16_t  addr;
     struct rt_mutex lock;
     rt_uint32_t  timeout;
     rt_uint32_t  retries;
@@ -64,7 +63,6 @@ struct rt_i2c_bus_device
 
 struct rt_i2c_client
 {
-    struct rt_device               parent;
     struct rt_i2c_bus_device       *bus;
     rt_uint16_t                    client_addr;
 };

components/drivers/include/drivers/i2c_dev.h

@@ -19,7 +19,6 @@ extern "C" {
 #endif
 
 #define RT_I2C_DEV_CTRL_10BIT        0x20
-#define RT_I2C_DEV_CTRL_ADDR         0x21
 #define RT_I2C_DEV_CTRL_TIMEOUT      0x22
 #define RT_I2C_DEV_CTRL_RW           0x23
 #define RT_I2C_DEV_CTRL_CLK          0x24