linux-kernel - [PATCH v5 0/2] Handle shared reset GPIO for WSA883x speakers

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Message-Id: <20250815172353.2430981-1-mohammad.rafi.shaik@oss.qualcomm.com>
Date: Fri, 15 Aug 2025 22:53:51 +0530
From: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
To: Srinivas Kandagatla <srini@...nel.org>,
        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>, Philipp Zabel <p.zabel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, kernel@....qualcomm.com
Subject: [PATCH v5 0/2] Handle shared reset GPIO for WSA883x speakers

On some Qualcomm platforms such as QCS6490-RB3Gen2, the multiple
WSA8830/WSA8835 speakers share a common reset (shutdown) GPIO.
To handle such cases, use the reset controller framework along with the
"reset-gpio" driver.

Tested on:
	- QCS6490-RB3Gen2

changes in [v5]:
	- Removed multiple error logs and used proper shared reset API.
	- Link to V4: https://lore.kernel.org/linux-sound/20250806181818.2817356-1-mohammad.rafi.shaik@oss.qualcomm.com/

changes in [v4]:
	- Dropped v3-0002 patch, which is not required.
	  Fixed with proper error handling for failure cases.
	- Link to V3: https://lore.kernel.org/linux-arm-msm/20250727083117.2415725-1-mohammad.rafi.shaik@oss.qualcomm.com/

changes in [v3]:
	- Created separate patch for devm action to safely disable
	  regulator.
	- cleanup the v2-0002 patch.
	- Link to V2: https://lore.kernel.org/linux-sound/20250718104628.3732645-1-mohammad.rafi.shaik@oss.qualcomm.com/

changes in [v2]:
	- Addressed the review comments from Krzysztof, Dmitry, Philipp.
	- Used devm_reset_control_get_optional_shared_deasserted() api.
	- created deasserts/asserts functions to handle reset gpios.
	- Register devm action to safely disable the regulator on device removal.
	- Link to V1: https://lore.kernel.org/linux-sound/20250620103012.360794-1-mohammad.rafi.shaik@oss.qualcomm.com/	

Mohammad Rafi Shaik (2):
  ASoC: dt-bindings: qcom,wsa8830: Add reset-gpios for shared line
  ASoC: codecs: wsa883x: Handle shared reset GPIO for WSA883x speakers

 .../bindings/sound/qcom,wsa883x.yaml          | 11 +++-
 sound/soc/codecs/wsa883x.c                    | 57 ++++++++++++++++---
 2 files changed, 59 insertions(+), 9 deletions(-)


base-commit: 1357b2649c026b51353c84ddd32bc963e8999603
-- 
2.34.1