linux-kernel - Re: [PATCH 0/8] typec: mux: Introduce support for multiple TypeC muxes

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Date:   Tue, 28 Dec 2021 09:08:46 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH 0/8] typec: mux: Introduce support for multiple TypeC
 muxes

On Tue 28 Dec 04:20 PST 2021, Hans de Goede wrote:

> Hi Bjorn,
> 
> On 12/28/21 06:21, Bjorn Andersson wrote:
> > This series introduces a level of indirection between the controller's view of
> > a typec_mux/switch and the implementation and then expands that to support
> > multiple drivers.
> > 
> > This is needed in order to support devices such as the Qualcomm Snapdragon 888
> > HDK, which does muxing and orientation handling in the QMP (USB+DP) PHY and SBU
> > muxing in the external FSA4480 chip.
> > 
> > Additionally integration of typec mux and switch in the QMP PHY is included in
> > the series, as is the new FSA4480 driver. This is done to deal with the
> > renaming of the driver-side typec_mux -> typec_mux_dev.
> > 
> > Bjorn Andersson (8):
> >   dt-bindings: phy: qcom,qmp-usb3-dp: Add altmode/switch properties
> >   phy: qcom-qmp: Register typec mux and orientation switch
> >   device property: Helper to match multiple connections
> >   device property: Use multi-connection matchers for single case
> >   typec: mux: Introduce indirection
> >   typec: mux: Allow multiple mux_devs per mux
> >   dt-bindings: usb: Add binding for fcs,fsa4480
> >   usb: typec: mux: Add On Semi fsa4480 driver
> 
> Thank you for your series, I will leave commenting on the
> dt-bindings and typec-mux changes to others.
> 
> But what I can do is test this on an x86 device using
> a pi3usb30532 mux for USB super-speed and DP-alt-mode
> muxing / orientation switching.
> 

Thanks Hans, that would be much appreciated. I realize that I failed to
mention that I don't have this hardware, so I've not been able to test
it myself.

> I'm going to wait a bit with doing that till this has had
> some reviews and possibly also some newer versions because
> of those reviews. If you haven't received a Tested-by from me
> when this looks like it is ready for merging please ping me.
> 

Will ping you when appropriate.

Thanks,
Bjorn

> Regards,
> 
> Hans
> 
> 
> > 
> >  .../bindings/phy/qcom,qmp-usb3-dp-phy.yaml    |  14 +
> >  .../devicetree/bindings/usb/fcs,fsa4480.yaml  |  72 +++++
> >  drivers/base/property.c                       |  83 ++++--
> >  drivers/phy/qualcomm/phy-qcom-qmp.c           | 176 ++++++++++--
> >  drivers/usb/typec/bus.c                       |   2 +-
> >  drivers/usb/typec/mux.c                       | 257 +++++++++++++-----
> >  drivers/usb/typec/mux.h                       |  12 +-
> >  drivers/usb/typec/mux/Kconfig                 |   9 +
> >  drivers/usb/typec/mux/Makefile                |   1 +
> >  drivers/usb/typec/mux/fsa4480.c               | 220 +++++++++++++++
> >  drivers/usb/typec/mux/intel_pmc_mux.c         |   8 +-
> >  drivers/usb/typec/mux/pi3usb30532.c           |   8 +-
> >  include/linux/property.h                      |   5 +
> >  include/linux/usb/typec_mux.h                 |  22 +-
> >  14 files changed, 762 insertions(+), 127 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml
> >  create mode 100644 drivers/usb/typec/mux/fsa4480.c
> > 
>