This patch series adds a WWAN "control" driver for the remote processor messaging (rpmsg) subsystem. This subsystem allows communicating with an integrated modem DSP on many Qualcomm SoCs, e.g. MSM8916 or MSM8974. The driver is a fairly simple glue layer between WWAN and RPMSG and is mostly based on the existing mhi_wwan_ctrl.c and rpmsg_char.c. For more information, see commit message in PATCH 2/3. I already posted a RFC for this a while ago: https://lore.kernel.org/linux-arm-msm/YLfL9Q+4860uqS8f@xxxxxxxxxxx/ and now I'm looking for some feedback for the actual changes. :) Changes in v3: - PATCH 2/3: Clarify commit message - PATCH 3/3: Fix build error for cdc-wdm.c, use extra tx_blocking() op instead v2: https://lore.kernel.org/netdev/20210618075243.42046-1-stephan@xxxxxxxxxxx/ Changes in v2: Only in PATCH 3/3 - Fix EPOLLOUT being always set even if poll op is defined - Rename poll() op -> tx_poll() since it should be only used for TX v1: https://lore.kernel.org/netdev/20210615133229.213064-1-stephan@xxxxxxxxxxx/ Stephan Gerhold (3): rpmsg: core: Add driver_data for rpmsg_device_id net: wwan: Add RPMSG WWAN CTRL driver net: wwan: Allow WWAN drivers to provide blocking tx and poll function MAINTAINERS | 7 ++ drivers/net/wwan/Kconfig | 18 ++++ drivers/net/wwan/Makefile | 1 + drivers/net/wwan/rpmsg_wwan_ctrl.c | 166 +++++++++++++++++++++++++++++ drivers/net/wwan/wwan_core.c | 16 ++- drivers/rpmsg/rpmsg_core.c | 4 +- include/linux/mod_devicetable.h | 1 + include/linux/wwan.h | 13 ++- 8 files changed, 219 insertions(+), 7 deletions(-) create mode 100644 drivers/net/wwan/rpmsg_wwan_ctrl.c -- 2.32.0
