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([178.197.222.116]) by smtp.gmail.com with ESMTPSA id g1-20020a170906c18100b00a3e278c4a3fsm4393712ejz.53.2024.02.21.03.30.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Feb 2024 03:30:39 -0800 (PST) From: Krzysztof Kozlowski To: Srinivas Kandagatla , Banajit Goswami , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Philipp Zabel , alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , Bartosz Golaszewski , Sean Anderson , Rob Herring Subject: [RESEND PATCH v6 v6 1/2] ASoC: dt-bindings: qcom,wsa8840: Add reset-gpios for shared line Date: Wed, 21 Feb 2024 12:30:35 +0100 Message-Id: <20240221113036.23905-1-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791508018997434720 X-GMAIL-MSGID: 1791508018997434720 On newer Qualcomm platforms, like X1E80100-CRD, the WSA884x speakers share SD_N GPIOs between two speakers, thus a coordinated assertion is needed. Linux supports handling shared GPIO lines through "reset-gpios" property, thus allow specifying either powerdown or reset GPIOs (these are the same). Cc: Bartosz Golaszewski Cc: Sean Anderson Acked-by: Rob Herring Signed-off-by: Krzysztof Kozlowski --- Resending because reset part of the patchset was applied, so this can go independently via ASoC. https://lore.kernel.org/all/38fda6619769da7240517982adfe734cb653ff5e.camel@pengutronix.de/ Changes in v6 ============= 1. Add Rb/Ack tags. For full changelog, see: https://lore.kernel.org/all/20240129115216.96479-1-krzysztof.kozlowski@linaro.org/ --- .../devicetree/bindings/sound/qcom,wsa8840.yaml | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/qcom,wsa8840.yaml b/Documentation/devicetree/bindings/sound/qcom,wsa8840.yaml index d717017b0fdb..22798d22d981 100644 --- a/Documentation/devicetree/bindings/sound/qcom,wsa8840.yaml +++ b/Documentation/devicetree/bindings/sound/qcom,wsa8840.yaml @@ -28,6 +28,10 @@ properties: description: Powerdown/Shutdown line to use (pin SD_N) maxItems: 1 + reset-gpios: + description: Powerdown/Shutdown line to use (pin SD_N) + maxItems: 1 + '#sound-dai-cells': const: 0 @@ -37,11 +41,16 @@ properties: required: - compatible - reg - - powerdown-gpios - '#sound-dai-cells' - vdd-1p8-supply - vdd-io-supply +oneOf: + - required: + - powerdown-gpios + - required: + - reset-gpios + unevaluatedProperties: false examples: From patchwork Wed Feb 21 11:30:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 204160 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp976620dyc; Wed, 21 Feb 2024 03:33:15 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCVIcfL73ujCx3nbesRF9KIhR8UTcRoWa+hhcE8iQ+9AOKq77ok7gNp4UXehQgf8ezS4JrRTL41AYk/14CqegRMNFYOo8A== X-Google-Smtp-Source: AGHT+IErQUVdSXdyTQudQvkvc/dTe+p6u51TaPcp8/L261p33v5sUNjbSAEwf27lYYJ0wbB0eYUd X-Received: by 2002:a17:906:e085:b0:a3f:421:26a5 with SMTP id gh5-20020a170906e08500b00a3f042126a5mr4155381ejb.12.1708515195419; Wed, 21 Feb 2024 03:33:15 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708515195; cv=pass; d=google.com; s=arc-20160816; b=GifQW5Pp6v9mcp3KGik2EJYLMBJkuplxX1VwblcZZedXlDxrJQARG9BLe5Hd6Vli30 E5a2lQXbeNNUKzddVI+iXYd/nsR5tVz608ZLhUdobnYaMLiixjz0i8ijF1isXvqvSX79 wR6hXWRWXmHYvNSq/CcneGrjGeDaOecHKGUdcwcM7Ecu9hOugOBim2QOK2gi2ksOWReG X5NdXjA41Cfa7RDwE5R9V6G8b8SrNzXFQaceRQ5SMUCfKtSRdJhVTezJ7G+jVud7qqbe ip+UzT2zN8LQrCpb8eLxWIURONw/vy88WQmAqqh/6CNEf3wXAPPB3oqLPuuVaN8EjIxQ lx6A== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=dMJuotCi10MIEivhgp+/HFVWVuz2YA+wsQ3N0tBEkCQ=; fh=ejFEwRUjGRaEZEsvKUPcft6PRiGJrLcg0DDF4C4zPoU=; b=xQmTI9wDbe+5IFZMQDw8Vl15tJDBRTXgUwUljMQ/vtSl6+z8Or8UPwyTr0uigfoqm8 A8nyawN3DoVFyBrMB8NbySpRxQgZBE0r6CPhzG5PFAgKT4nMVE45JmU8AarfdtjHPMsl 5BxWseyAar8UnZKK4CjrCl7nwBp0gAYPdPGXiYwOCx4V1hzjRuA9DO4KmCtl0QnW0Dvg cezaCPZG8kd5m2XKzdBpLGpBjxUWrkYQwRQyYDUmmIkxDvf1TdHZ4uXrc6YACBjQRW47 UlYgqDULMdCKOlfTx7tmNO+vH+mxKElz+oozf5/+dKc9zbgG4x9OuZK1rAnLNEB8WyYb 1wWA==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=NgFExfEB; arc=pass (i=1 spf=pass spfdomain=linaro.org dkim=pass dkdomain=linaro.org dmarc=pass fromdomain=linaro.org); spf=pass (google.com: domain of linux-kernel+bounces-74620-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-74620-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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([178.197.222.116]) by smtp.gmail.com with ESMTPSA id g1-20020a170906c18100b00a3e278c4a3fsm4393712ejz.53.2024.02.21.03.30.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Feb 2024 03:30:41 -0800 (PST) From: Krzysztof Kozlowski To: Srinivas Kandagatla , Banajit Goswami , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Philipp Zabel , alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , Bartosz Golaszewski , Sean Anderson Subject: [RESEND PATCH v6 v6 2/2] ASoC: codecs: wsa884x: Allow sharing reset GPIO Date: Wed, 21 Feb 2024 12:30:36 +0100 Message-Id: <20240221113036.23905-2-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240221113036.23905-1-krzysztof.kozlowski@linaro.org> References: <20240221113036.23905-1-krzysztof.kozlowski@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791508029872029998 X-GMAIL-MSGID: 1791508029872029998 On some boards with multiple WSA8840/WSA8845 speakers, the reset (shutdown) GPIO is shared between two speakers. Use the reset controller framework and its "reset-gpio" driver to handle this case. This allows bring-up and proper handling of all WSA884x speakers on X1E80100-CRD board. Cc: Bartosz Golaszewski Cc: Sean Anderson Reviewed-by: Philipp Zabel Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wsa884x.c | 53 +++++++++++++++++++++++++++++++------- 1 file changed, 43 insertions(+), 10 deletions(-) diff --git a/sound/soc/codecs/wsa884x.c b/sound/soc/codecs/wsa884x.c index f2653df84e4a..a9767ef0e39d 100644 --- a/sound/soc/codecs/wsa884x.c +++ b/sound/soc/codecs/wsa884x.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -699,6 +700,7 @@ struct wsa884x_priv { struct sdw_stream_runtime *sruntime; struct sdw_port_config port_config[WSA884X_MAX_SWR_PORTS]; struct gpio_desc *sd_n; + struct reset_control *sd_reset; bool port_prepared[WSA884X_MAX_SWR_PORTS]; bool port_enable[WSA884X_MAX_SWR_PORTS]; unsigned int variant; @@ -1799,9 +1801,22 @@ static struct snd_soc_dai_driver wsa884x_dais[] = { }, }; -static void wsa884x_gpio_powerdown(void *data) +static void wsa884x_reset_powerdown(void *data) { - gpiod_direction_output(data, 1); + struct wsa884x_priv *wsa884x = data; + + if (wsa884x->sd_reset) + reset_control_assert(wsa884x->sd_reset); + else + gpiod_direction_output(wsa884x->sd_n, 1); +} + +static void wsa884x_reset_deassert(struct wsa884x_priv *wsa884x) +{ + if (wsa884x->sd_reset) + reset_control_deassert(wsa884x->sd_reset); + else + gpiod_direction_output(wsa884x->sd_n, 0); } static void wsa884x_regulator_disable(void *data) @@ -1809,6 +1824,27 @@ static void wsa884x_regulator_disable(void *data) regulator_bulk_disable(WSA884X_SUPPLIES_NUM, data); } +static int wsa884x_get_reset(struct device *dev, struct wsa884x_priv *wsa884x) +{ + wsa884x->sd_reset = devm_reset_control_get_optional_shared(dev, NULL); + if (IS_ERR(wsa884x->sd_reset)) + return dev_err_probe(dev, PTR_ERR(wsa884x->sd_reset), + "Failed to get reset\n"); + else if (wsa884x->sd_reset) + return 0; + /* + * else: NULL, so use the backwards compatible way for powerdown-gpios, + * which does not handle sharing GPIO properly. + */ + wsa884x->sd_n = devm_gpiod_get_optional(dev, "powerdown", + GPIOD_OUT_HIGH); + if (IS_ERR(wsa884x->sd_n)) + return dev_err_probe(dev, PTR_ERR(wsa884x->sd_n), + "Shutdown Control GPIO not found\n"); + + return 0; +} + static int wsa884x_probe(struct sdw_slave *pdev, const struct sdw_device_id *id) { @@ -1838,11 +1874,9 @@ static int wsa884x_probe(struct sdw_slave *pdev, if (ret) return ret; - wsa884x->sd_n = devm_gpiod_get_optional(dev, "powerdown", - GPIOD_OUT_HIGH); - if (IS_ERR(wsa884x->sd_n)) - return dev_err_probe(dev, PTR_ERR(wsa884x->sd_n), - "Shutdown Control GPIO not found\n"); + ret = wsa884x_get_reset(dev, wsa884x); + if (ret) + return ret; dev_set_drvdata(dev, wsa884x); wsa884x->slave = pdev; @@ -1858,9 +1892,8 @@ static int wsa884x_probe(struct sdw_slave *pdev, pdev->prop.sink_dpn_prop = wsa884x_sink_dpn_prop; pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY; - /* Bring out of reset */ - gpiod_direction_output(wsa884x->sd_n, 0); - ret = devm_add_action_or_reset(dev, wsa884x_gpio_powerdown, wsa884x->sd_n); + wsa884x_reset_deassert(wsa884x); + ret = devm_add_action_or_reset(dev, wsa884x_reset_powerdown, wsa884x); if (ret) return ret;