linux-kernel - [PATCH v2 0/8] arm64: qcom: add Type-C Altmode support

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Message-Id: <20230601-topic-sm8550-upstream-type-c-v2-0-3bbdf37575c3@linaro.org>
Date:   Wed, 07 Jun 2023 10:04:59 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2 0/8] arm64: qcom: add Type-C Altmode support

This adds the missing bits to support the USB-C Altmode
support on SM8550.

These are the following changes since the previous SM8450 SoC:
- No more GLINK altmode events for USB only changes, only DP
- Type-C orientation is available on a PMIC signal connected
  to a GPIO line
- When altmode is disconnected, an 0xff mode event is sent.

In order to handle those changes, a new orientation-gpios property
is added to the usb-c connector bindings.
The 0xff altomode is translated as a SAFE type-c mux mode.

And in order to handle such info, we tie this to the UCSI connector
events to propagate the orientation to Type-C switches.

Redriver driver & bindings dependency at [1].

[1] https://lore.kernel.org/all/20230601-topic-sm8x50-upstream-redriver-v2-0-dda89b22b1c0@linaro.org/

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
Changes in v2:
- Updated redriver node to use retimer-switch on QRD
- Fixed redriver data-lane according to v2 bindings
- Added review/ack tags
- Added new change to handle retimer-switch in pmic-glink altmode driver
- Link to v1: https://lore.kernel.org/r/20230601-topic-sm8550-upstream-type-c-v1-0-d4d97b4d8bab@linaro.org

---
Neil Armstrong (8):
      dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
      soc: qcom: pmic_glink_altmode: handle safe mode when disconnect
      usb: ucsi: glink: use the connector orientation GPIO to provide switch events
      qcom: pmic_glink_altmode: add retimer-switch support
      qcom: pmic_glink: enable altmode for SM8550
      arm64: dts: qcom: sm8550: add ports subnodes in usb/dp qmpphy node
      arm64: dts: qcom: sm8550-mtp: add pmic glink port/endpoints
      arm64: dts: qcom: sm8550-qrd: add pmic glink port/endpoints

 .../bindings/connector/usb-connector.yaml          |  5 ++
 arch/arm64/boot/dts/qcom/sm8550-mtp.dts            | 67 ++++++++++++++-
 arch/arm64/boot/dts/qcom/sm8550-qrd.dts            | 99 +++++++++++++++++++++-
 arch/arm64/boot/dts/qcom/sm8550.dtsi               | 26 ++++++
 drivers/soc/qcom/pmic_glink.c                      |  6 +-
 drivers/soc/qcom/pmic_glink_altmode.c              | 61 ++++++++++++-
 drivers/usb/typec/ucsi/ucsi_glink.c                | 52 +++++++++++-
 7 files changed, 305 insertions(+), 11 deletions(-)
---
base-commit: 54bfdd3bfe0f13da0bcf6e720d0ec0020a89b4dc
change-id: 20230601-topic-sm8550-upstream-type-c-e85b4d971450

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