S5K4AA_READ_MODE
{SENSOR, S5K4AA_READ_MODE, 0xa0, 0x00},
{SENSOR, S5K4AA_READ_MODE, S5K4AA_RM_H_FLIP | S5K4AA_RM_ROW_SKIP_2X
{SENSOR, S5K4AA_READ_MODE, S5K4AA_RM_H_FLIP, 0x00},
err = m5602_read_sensor(sd, S5K4AA_READ_MODE, &data, 1);
err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);