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Many WWAN modems come with embedded GNSS receiver inside and have a dedicated port to output geopositioning data. On the one hand, the GNSS receiver has little in common with WWAN modem and just shares a host interface and should be exported using the GNSS subsystem. On the other hand, GNSS receiver is not automatically activated and needs a generic WWAN control port (AT, MBIM, etc.) to be turned on. And a user space software needs extra information to find the control port. Introduce the new type of WWAN port - NMEA. When driver asks to register a NMEA port, the core allocates common parent WWAN device as usual, but exports the NMEA port via the GNSS subsystem and acts as a proxy between the device driver and the GNSS subsystem. From the WWAN device driver perspective, a NMEA port is registered as a regular WWAN port without any difference. And the driver interacts only with the WWAN core. From the user space perspective, the NMEA port is a GNSS device which parent can be used to enumerate and select the proper control port for the GNSS receiver management. CC: Slark Xiao <slark_xiao@163.com> CC: Muhammad Nuzaihan <zaihan@unrealasia.net> CC: Qiang Yu <quic_qianyu@quicinc.com> CC: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> CC: Johan Hovold <johan@kernel.org> Suggested-by: Loic Poulain <loic.poulain@oss.qualcomm.com> Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com> Link: https://patch.msgid.link/20260126062158.308598-6-slark_xiao@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
127 lines
4.1 KiB
Plaintext
127 lines
4.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Wireless WAN device configuration
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#
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menu "Wireless WAN"
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config WWAN
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tristate "WWAN Driver Core"
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depends on GNSS || GNSS = n
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help
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Say Y here if you want to use the WWAN driver core. This driver
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provides a common framework for WWAN drivers.
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To compile this driver as a module, choose M here: the module will be
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called wwan.
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if WWAN
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config WWAN_DEBUGFS
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bool "WWAN devices debugfs interface" if EXPERT
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depends on DEBUG_FS
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default y
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help
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Enables debugfs infrastructure for the WWAN core and device drivers.
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If this option is selected, then you can find the debug interface
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elements for each WWAN device in a directory that is corresponding to
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the device name: debugfs/wwan/wwanX.
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config WWAN_HWSIM
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tristate "Simulated WWAN device"
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help
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This driver is a developer testing tool that can be used to test WWAN
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framework.
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To compile this driver as a module, choose M here: the module will be
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called wwan_hwsim. If unsure, say N.
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config MHI_WWAN_CTRL
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tristate "MHI WWAN control driver for QCOM-based PCIe modems"
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depends on MHI_BUS
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help
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MHI WWAN CTRL allows QCOM-based PCIe modems to expose different modem
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control protocols/ports to userspace, including AT, MBIM, QMI, DIAG
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and FIREHOSE. These protocols can be accessed directly from userspace
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(e.g. AT commands) or via libraries/tools (e.g. libmbim, libqmi,
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libqcdm...).
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To compile this driver as a module, choose M here: the module will be
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called mhi_wwan_ctrl.
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config MHI_WWAN_MBIM
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tristate "MHI WWAN MBIM network driver for QCOM-based PCIe modems"
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depends on MHI_BUS
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help
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MHI WWAN MBIM is a WWAN network driver for QCOM-based PCIe modems.
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It implements MBIM over MHI, for IP data aggregation and muxing.
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A default wwan0 network interface is created for MBIM data session
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ID 0. Additional links can be created via wwan rtnetlink type.
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To compile this driver as a module, choose M here: the module will be
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called mhi_wwan_mbim.
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config QCOM_BAM_DMUX
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tristate "Qualcomm BAM-DMUX WWAN network driver"
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depends on (DMA_ENGINE && PM && QCOM_SMEM_STATE) || COMPILE_TEST
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help
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The BAM Data Multiplexer provides access to the network data channels
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of modems integrated into many older Qualcomm SoCs, e.g. Qualcomm
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MSM8916 or MSM8974. The connection can be established via QMI/AT from
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userspace with control ports available through the WWAN subsystem
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(CONFIG_RPMSG_WWAN_CTRL) or QRTR network sockets (CONFIG_QRTR).
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To compile this driver as a module, choose M here: the module will be
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called qcom_bam_dmux.
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config RPMSG_WWAN_CTRL
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tristate "RPMSG WWAN control driver"
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depends on RPMSG
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help
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RPMSG WWAN CTRL allows modems available via RPMSG channels to expose
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different modem protocols/ports to userspace, including AT and QMI.
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These protocols can be accessed directly from userspace
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(e.g. AT commands) or via libraries/tools (e.g. libqmi, libqcdm...).
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This is mainly used for modems integrated into many Qualcomm SoCs,
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e.g. for AT and QMI on Qualcomm MSM8916 or MSM8974. Note that many
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newer Qualcomm SoCs (e.g. SDM845) still provide an AT port through
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this driver but the QMI messages can only be sent through
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QRTR network sockets (CONFIG_QRTR).
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To compile this driver as a module, choose M here: the module will be
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called rpmsg_wwan_ctrl.
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config IOSM
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tristate "IOSM Driver for Intel M.2 WWAN Device"
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depends on PCI
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select NET_DEVLINK
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select RELAY if WWAN_DEBUGFS
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help
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This driver enables Intel M.2 WWAN Device communication.
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If you have one of those Intel M.2 WWAN Modules and wish to use it in
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Linux say Y/M here.
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If unsure, say N.
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config MTK_T7XX
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tristate "MediaTek PCIe 5G WWAN modem T7xx device"
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depends on PCI
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select RELAY if WWAN_DEBUGFS
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help
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Enables MediaTek PCIe based 5G WWAN modem (T7xx series) device.
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Adapts WWAN framework and provides network interface like wwan0
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and tty interfaces like wwan0at0 (AT protocol), wwan0mbim0
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(MBIM protocol), etc.
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To compile this driver as a module, choose M here: the module will be
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called mtk_t7xx.
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If unsure, say N.
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endif # WWAN
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endmenu
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