From: Bjørn Mork <bjorn@xxxxxxx> Date: Fri, 20 Jan 2012 02:37:22 +0100 > Some WWAN LTE/3G devices based on chipsets from Qualcomm provide > near standard CDC ECM interfaces in addition to the usual serial > interfaces. The Huawei E392/E398 are examples of such devices. > > These typically cannot be fully configured using AT commands > over a serial interface. It is necessary to speak the proprietary > Qualcomm MSM Interface (QMI) protocol to the device to enable the > ethernet proxy functionality. > > The devices embed the QMI protocol in CDC on the control interface, > using standard CDC commands and notifications. The do not otherwise > use CDC commands for the ethernet function. This driver does > therefore not need access to any other aspects of the control > interface than the descriptors attached to it. > > Another driver, cdc-wdm, will provide userspace access to the > QMI protocol independently of this driver. To facilitate this, > this driver avoids binding to the control interface, and uses > only the associated data interface after parsing the common CDC > functional descriptors on the control interface. > > You will want both the cdc-wdm and option drivers as companions to > this driver, to have full access to all interfaces and protocols > exported by the device. > > Signed-off-by: Bjørn Mork <bjorn@xxxxxxx> Applied. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
