VPCCMD_R_BL_POWER
err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power);
if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))