usb: typec: mux: Add On Semi fsa4480 driver

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The ON Semiconductor FSA4480 is a USB Type-C port multimedia switch with
support for analog audio headsets. It allows sharing a common USB Type-C
port to pass USB2.0 signal, analog audio, sideband use wires and analog
microphone signal.

Due to lacking upstream audio support for testing, the audio muxing is
left untouched, but implementation of muxing the SBU lines is provided
as a pair of Type-C mux and switch devices. This provides the necessary
support for enabling the DisplayPort altmode on devices with this
circuit.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220422222351.1297276-8-bjorn.andersson@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Bjorn Andersson 2022-04-22 15:23:51 -07:00 • committed by Greg Kroah-Hartman

parent 01afa882f1

commit 1dc246320c

3 changed files with 229 additions and 0 deletions

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10

drivers/usb/typec/mux/Kconfig

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1

drivers/usb/typec/mux/Makefile

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218

drivers/usb/typec/mux/fsa4480.c

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