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charset="utf-8" On Qualcomm platforms such as QCS6490-RB3Gen2, the WSA883x speaker amplifiers share the SD_N GPIO line between two speakers, thus requires coordinated control when asserting the GPIO. Linux supports shared GPIO handling via the "reset-gpios" property, which can be used to specify either the powerdown or reset GPIOs. Signed-off-by: Mohammad Rafi Shaik Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/sound/qcom,wsa883x.yaml | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml b/Do= cumentation/devicetree/bindings/sound/qcom,wsa883x.yaml index 14d312f9c345..098f1df62c8c 100644 --- a/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml +++ b/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml @@ -29,6 +29,10 @@ properties: description: GPIO spec for Powerdown/Shutdown line to use (pin SD_N) maxItems: 1 =20 + reset-gpios: + description: Powerdown/Shutdown line to use (pin SD_N) + maxItems: 1 + vdd-supply: description: VDD Supply for the Codec =20 @@ -50,10 +54,15 @@ required: - compatible - reg - vdd-supply - - powerdown-gpios - "#thermal-sensor-cells" - "#sound-dai-cells" =20 +oneOf: + - required: + - powerdown-gpios + - required: + - reset-gpios + unevaluatedProperties: false =20 examples: --=20 2.34.1 From nobody Mon Oct 6 17:09:57 2025 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C11F2C08BB for ; 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charset="utf-8" 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. Register devm action to safely disable the regulator on device removal to prevents a potential release warning from _regulator_put(). Signed-off-by: Mohammad Rafi Shaik --- sound/soc/codecs/wsa883x.c | 93 +++++++++++++++++++++++++++++--------- 1 file changed, 71 insertions(+), 22 deletions(-) diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c index 188363b03b93..eea160a08183 100644 --- a/sound/soc/codecs/wsa883x.c +++ b/sound/soc/codecs/wsa883x.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -468,6 +469,7 @@ struct wsa883x_priv { struct sdw_stream_runtime *sruntime; struct sdw_port_config port_config[WSA883X_MAX_SWR_PORTS]; struct gpio_desc *sd_n; + struct reset_control *sd_reset; bool port_prepared[WSA883X_MAX_SWR_PORTS]; bool port_enable[WSA883X_MAX_SWR_PORTS]; int active_ports; @@ -1546,6 +1548,53 @@ static const struct hwmon_chip_info wsa883x_hwmon_ch= ip_info =3D { .info =3D wsa883x_hwmon_info, }; =20 +static void wsa883x_reset_assert(void *data) +{ + struct wsa883x_priv *wsa883x =3D data; + + if (wsa883x->sd_reset) + reset_control_assert(wsa883x->sd_reset); + else + gpiod_direction_output(wsa883x->sd_n, 1); +} + +static void wsa883x_reset_deassert(struct wsa883x_priv *wsa883x) +{ + if (wsa883x->sd_reset) + reset_control_deassert(wsa883x->sd_reset); + else + gpiod_direction_output(wsa883x->sd_n, 0); +} + +static void wsa883x_regulator_disable(void *data) +{ + struct wsa883x_priv *wsa883x =3D data; + + regulator_disable(wsa883x->vdd); +} + +static int wsa883x_get_reset(struct device *dev, struct wsa883x_priv *wsa8= 83x) +{ + wsa883x->sd_reset =3D devm_reset_control_get_optional_shared_deasserted(d= ev, NULL); + if (IS_ERR(wsa883x->sd_reset)) + return dev_err_probe(dev, PTR_ERR(wsa883x->sd_reset), + "Failed to get reset\n"); + /* + * if sd_reset: NULL, so use the backwards compatible way for powerdown-g= pios, + * which does not handle sharing GPIO properly. + */ + if (!wsa883x->sd_reset) { + wsa883x->sd_n =3D devm_gpiod_get_optional(dev, "powerdown", + GPIOD_FLAGS_BIT_NONEXCLUSIVE | + GPIOD_OUT_HIGH); + if (IS_ERR(wsa883x->sd_n)) + return dev_err_probe(dev, PTR_ERR(wsa883x->sd_n), + "Shutdown Control GPIO not found\n"); + } + + return 0; +} + static int wsa883x_probe(struct sdw_slave *pdev, const struct sdw_device_id *id) { @@ -1566,13 +1615,18 @@ static int wsa883x_probe(struct sdw_slave *pdev, if (ret) return dev_err_probe(dev, ret, "Failed to enable vdd regulator\n"); =20 - wsa883x->sd_n =3D devm_gpiod_get_optional(dev, "powerdown", - GPIOD_FLAGS_BIT_NONEXCLUSIVE | GPIOD_OUT_HIGH); - if (IS_ERR(wsa883x->sd_n)) { - ret =3D dev_err_probe(dev, PTR_ERR(wsa883x->sd_n), - "Shutdown Control GPIO not found\n"); - goto err; - } + ret =3D wsa883x_get_reset(dev, wsa883x); + if (ret) + return ret; + + /* + * Register devm action to safely disable the regulator on device removal. + * This prevents a potential release warning from _regulator_put(). + */ + ret =3D devm_add_action_or_reset(dev, wsa883x_regulator_disable, + wsa883x); + if (ret) + return ret; =20 dev_set_drvdata(dev, wsa883x); wsa883x->slave =3D pdev; @@ -1595,15 +1649,16 @@ static int wsa883x_probe(struct sdw_slave *pdev, pdev->prop.simple_clk_stop_capable =3D true; pdev->prop.sink_dpn_prop =3D wsa_sink_dpn_prop; pdev->prop.scp_int1_mask =3D SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY; - gpiod_direction_output(wsa883x->sd_n, 0); + + wsa883x_reset_deassert(wsa883x); + ret =3D devm_add_action_or_reset(dev, wsa883x_reset_assert, wsa883x); + if (ret) + return ret; =20 wsa883x->regmap =3D devm_regmap_init_sdw(pdev, &wsa883x_regmap_config); - if (IS_ERR(wsa883x->regmap)) { - gpiod_direction_output(wsa883x->sd_n, 1); - ret =3D dev_err_probe(dev, PTR_ERR(wsa883x->regmap), - "regmap_init failed\n"); - goto err; - } + if (IS_ERR(wsa883x->regmap)) + return dev_err_probe(dev, PTR_ERR(wsa883x->regmap), + "regmap_init failed\n"); =20 if (IS_REACHABLE(CONFIG_HWMON)) { struct device *hwmon; @@ -1623,16 +1678,10 @@ static int wsa883x_probe(struct sdw_slave *pdev, pm_runtime_set_active(dev); pm_runtime_enable(dev); =20 - ret =3D devm_snd_soc_register_component(dev, - &wsa883x_component_drv, + return devm_snd_soc_register_component(dev, + &wsa883x_component_drv, wsa883x_dais, ARRAY_SIZE(wsa883x_dais)); -err: - if (ret) - regulator_disable(wsa883x->vdd); - - return ret; - } =20 static int wsa883x_runtime_suspend(struct device *dev) --=20 2.34.1