linux-kernel - [PATCH v2 0/2] usb: typec: support Qualcomm WCD939X USB SubSystem Altmode Mux

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Message-Id: <20231212-topic-sm8650-upstream-wcd939x-usbss-v2-0-38961fea5867@linaro.org>
Date:   Tue, 12 Dec 2023 09:54:27 +0100
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v2 0/2] usb: typec: support Qualcomm WCD939X USB SubSystem
 Altmode Mux

Qualcomm WCD9390/WCD9395 is a standalone Hi-Fi audio codec IC with a
functionally separate USB SubSystem for Altmode/Analog Audio Switch
accessible over an I2C interface.

It provides switching USB-C USB2.0 lines between USB and Audio Headphones
speaker lines, and the USB-C SBU lines between DisplayPort AUX and Audio
Headphones Microphone/Ground.

The Audio Headphone and Microphone data path between the Codec and the
USB-C Mux subsystems are external to the IC, thus requiring DT
port-endpoint graph description to handle USB-C altmode & orientation
switching for Audio Accessory Mode.

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
Changes in v2:
- Bindings:
 - Limited text width to 80 chars max
 - Added maxItems: 1 to reset-gpios
- Driver
 - Added missing bitfield.h and gpio/consumer.h includes
 - Fixed double typec_switch_unregister()
 - Added missing typec_switch_put() in remove()
 - Removed useless wcd9395-usbss compatible & device_id since wcd9395 has wcd9390 as fallback
- Link to v1: https://lore.kernel.org/r/20231208-topic-sm8650-upstream-wcd939x-usbss-v1-0-91d1ba680fe0@linaro.org

---
Neil Armstrong (2):
      dt-bindings: usb: Document WCD939x USB SubSystem Altmode/Analog Audio Switch
      usb: typec: mux: add Qualcomm WCD939X USB SubSystem Altmode Mux driver

 .../bindings/usb/qcom,wcd939x-usbss.yaml           | 102 +++
 drivers/usb/typec/mux/Kconfig                      |  10 +
 drivers/usb/typec/mux/Makefile                     |   1 +
 drivers/usb/typec/mux/wcd939x-usbss.c              | 779 +++++++++++++++++++++
 4 files changed, 892 insertions(+)
---
base-commit: bc63de6e6ba0b16652c5fb4b9c9916b9e7ca1f23
change-id: 20231208-topic-sm8650-upstream-wcd939x-usbss-030c011a1709

Best regards,
-- 
Neil Armstrong <neil.armstrong@...aro.org>