LTC2945_CONTROL
ret = regmap_read(regmap, LTC2945_CONTROL, &control);
ret = regmap_read(regmap, LTC2945_CONTROL, &control);
ret = regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE,
regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE, 0);