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[net-next,0/3] net: wwan: Add RPMSG WWAN CTRL driver

Message ID 20210615133229.213064-1-stephan@gerhold.net (mailing list archive)
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Series net: wwan: Add RPMSG WWAN CTRL driver | expand

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Stephan Gerhold June 15, 2021, 1:32 p.m. UTC 
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@gerhold.net/
and now I'm looking for some feedback for the actual changes. :)

Especially patch 3/3 is still up for discussion, perhaps there is a cleaner
way to implement the blocking/non-blocking writes for rpmsg_wwan_ctrl?

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/iosm/iosm_ipc_port.c |   3 +-
 drivers/net/wwan/mhi_wwan_ctrl.c      |   3 +-
 drivers/net/wwan/rpmsg_wwan_ctrl.c    | 156 ++++++++++++++++++++++++++
 drivers/net/wwan/wwan_core.c          |   9 +-
 drivers/net/wwan/wwan_hwsim.c         |   3 +-
 drivers/rpmsg/rpmsg_core.c            |   4 +-
 include/linux/mod_devicetable.h       |   1 +
 include/linux/wwan.h                  |  13 ++-
 11 files changed, 207 insertions(+), 11 deletions(-)
 create mode 100644 drivers/net/wwan/rpmsg_wwan_ctrl.c