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