sensor_write1
sensor_write1(gspca_dev, sign_reg, 0x00);
sensor_write1(gspca_dev, sign_reg, 0x01);
sensor_write1(gspca_dev, value_reg, val);
sensor_write1(gspca_dev, 3, exposure >> 4);
sensor_write1(gspca_dev, 4, exposure & 0x0f);
sensor_write1(gspca_dev, 3, exposure >> 8);
sensor_write1(gspca_dev, 4, exposure & 0xff);
sensor_write1(gspca_dev, 0x02, clockdiv);
sensor_write1(gspca_dev, 0x0e, val);
sensor_write1(gspca_dev, gainreg, val >> 8);
sensor_write1(gspca_dev, gainreg + 1, val & 0xff);
sensor_write1(gspca_dev, 0x10, val);
sensor_write1(gspca_dev, 0x1c, val);