linux-kernel - [PATCH v4 0/5] Add DisplayPort sound support for Fairphone 5 smartphone

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Message-Id: <20250507-fp5-dp-sound-v4-0-4098e918a29e@fairphone.com>
Date: Wed, 07 May 2025 10:01:36 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Srinivas Kandagatla <srini@...nel.org>, 
 Banajit Goswami <bgoswami@...cinc.com>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 alsa-devel@...a-project.org, linux-arm-msm@...r.kernel.org, 
 linux-sound@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v4 0/5] Add DisplayPort sound support for Fairphone 5
 smartphone

Add the necessary sound card bits and some dts additions to enable sound
over DisplayPort-over-USB-C, e.g. to a connected TV or monitor.

The UCM files can be found here:
https://gitlab.postmarketos.org/postmarketOS/pmaports/-/tree/master/device/testing/device-fairphone-fp5/ucm

This series - in spirit - depends on the series enabling DisplayPort in
the first place, but can land pretty independently, especially the ASoC
bits:
https://lore.kernel.org/linux-arm-msm/20250312-fp5-pmic-glink-dp-v2-0-a55927749d77@fairphone.com/

The ASoC bits depend on the patches for USB audio offloading merged
through Greg's tree so this cannot easily be applied for v6.16 through
the sound tree. Either it waits for v6.17 or also goes through Greg's
tree.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
Changes in v4:
- Use "sm4250" for qcom,qrb4210-rb2-sndcard (Srinivas)
- Expand cover letter to mention dependencies for ASoC patches
- Pick up tags
- Link to v3: https://lore.kernel.org/r/20250425-fp5-dp-sound-v3-0-7cb45180091b@fairphone.com

Changes in v3:
- Simplify return qcom_snd_wcd_jack_setup in machine driver
- Pick up tags
- Link to v2: https://lore.kernel.org/r/20250418-fp5-dp-sound-v2-0-05d65f084b05@fairphone.com

Changes in v2:
- Revamp series based on comments on v1, doesn't have much too much in
  common anymore
- Use sm8250 instead of sc8280xp sndcard file, so port other required
  changes from sc8280xp.c to sm8250.c
- This also changes the sound card compatible to from
  qcom,qcm6490-sndcard to fairphone,fp5-sndcard
- Link to v1: https://lore.kernel.org/r/20240809-fp5-dp-sound-v1-0-d7ba2c24f6b9@fairphone.com

---
Luca Weiss (5):
      ASoC: dt-bindings: qcom,sm8250: Add Fairphone 5 sound card
      ASoC: qcom: sm8250: set card driver name from match data
      ASoC: qcom: sm8250: add DisplayPort Jack support
      ASoC: qcom: sm8250: Add Fairphone 5 soundcard compatible
      arm64: dts: qcom: qcm6490-fairphone-fp5: Add DisplayPort sound support

 .../devicetree/bindings/sound/qcom,sm8250.yaml     |  1 +
 arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 31 ++++++++++++++++++++++
 sound/soc/qcom/sm8250.c                            | 27 ++++++++++---------
 3 files changed, 47 insertions(+), 12 deletions(-)
---
base-commit: f819a667fa466d3b96b542b147053b6873f18ea1
change-id: 20240809-fp5-dp-sound-b3768f3019bd

Best regards,
-- 
Luca Weiss <luca.weiss@...rphone.com>