From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8506EC433F5 for ; Fri, 8 Oct 2021 05:32:18 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A92B9610D1 for ; Fri, 8 Oct 2021 05:32:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A92B9610D1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 4DF061666; Fri, 8 Oct 2021 07:31:25 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 4DF061666 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1633671135; bh=DYWmkJAzIKunMvQiYFoGCjH5lq8n7fabmg3RFDjtElg=; h=Subject:To:References:From:Date:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=EO/vW/+xjXz9Fg4vYifOLCPwV0B2nmOnvNmdG8274e2WU545qFT+d4Zths3ZntNzk mBlQfwjacAhsYW7p9eyc9R7W8bDnPmVUptaFLzjWSOi2hiwVbeAcrOOyT9Px5pdd30 +S9Ok0wPPttgUCPWQ/Ol5Xz4OmDf9zjJb/NPNL1Y= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 15944F80124; Fri, 8 Oct 2021 07:31:24 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 57953F80246; Fri, 8 Oct 2021 07:31:22 +0200 (CEST) Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id E260EF80124 for ; Fri, 8 Oct 2021 07:31:14 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E260EF80124 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="RLJZsgyy" DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1633671074; h=Content-Transfer-Encoding: Content-Type: In-Reply-To: MIME-Version: Date: Message-ID: From: References: Cc: To: Subject: Sender; bh=5fqkLzv17nAU7AoHusUunmFmWi2eHMme4Jqx8XPinZ0=; b=RLJZsgyyZilteuVxGl+r5azwGn5UGcYZkQXJPhrhuHMudK9Im761Wbva5ZYSmVUyVIonmmqA CGf461bZkC3QoYOdW8tB1ki3GXu8xDzGjELAo7cZ8MIUbmQA/kfotPIIx39lA8Y9fius/K6m 1TfIWJP0DrbsnTdHUEYY6hcY48A= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI4ZmE2ZSIsICJhbHNhLWRldmVsQGFsc2EtcHJvamVjdC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 615fd79f03355859c82dac51 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 08 Oct 2021 05:31:11 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id DB1FEC4360C; Fri, 8 Oct 2021 05:31:10 +0000 (UTC) Received: from [192.168.1.100] (unknown [157.48.163.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: srivasam) by smtp.codeaurora.org (Postfix) with ESMTPSA id AC47AC43460; Fri, 8 Oct 2021 05:31:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org AC47AC43460 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org Subject: Re: [PATCH] ASoC: qcom: soundwire: Enable soundwire bus clock for version 1.6 To: Bjorn Andersson References: <1633105471-30928-1-git-send-email-srivasam@codeaurora.org> From: Srinivasa Rao Mandadapu Organization: Qualcomm India Private Limited. Message-ID: <7969646f-6dfb-b03f-886c-38987fe01395@codeaurora.org> Date: Fri, 8 Oct 2021 11:00:59 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, bgoswami@codeaurora.org, Venkata Prasad Potturu , linux-arm-msm@vger.kernel.org, plai@codeaurora.org, tiwai@suse.com, agross@kernel.org, robh+dt@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, rohitkr@codeaurora.org, swboyd@chromium.org, judyhsiao@chromium.org, linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Thanks for Your time Bjorn!!! On 10/5/2021 10:31 PM, Bjorn Andersson wrote: > On Fri 01 Oct 09:24 PDT 2021, Srinivasa Rao Mandadapu wrote: > >> Add support for soundwire 1.6 version to gate RX/TX bus clock. >> >> Signed-off-by: Venkata Prasad Potturu >> Signed-off-by: Srinivasa Rao Mandadapu >> --- >> drivers/soundwire/qcom.c | 12 +++++++++++- >> 1 file changed, 11 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c >> index 0ef79d6..599b3ed 100644 >> --- a/drivers/soundwire/qcom.c >> +++ b/drivers/soundwire/qcom.c >> @@ -127,6 +127,7 @@ struct qcom_swrm_ctrl { >> struct device *dev; >> struct regmap *regmap; >> void __iomem *mmio; >> + char __iomem *swrm_hctl_reg; >> struct completion broadcast; >> struct completion enumeration; >> struct work_struct slave_work; >> @@ -610,6 +611,12 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl) >> val = FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, ctrl->rows_index); >> val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, ctrl->cols_index); >> >> + if (ctrl->swrm_hctl_reg) { >> + val = ioread32(ctrl->swrm_hctl_reg); >> + val &= 0xFFFFFFFD; > That's a tricky way of saying: > > val &= ~BIT(1); > > That said, naming bit 1 is still a very good thing. Okay. will change accordingly. > >> + iowrite32(val, ctrl->swrm_hctl_reg); >> + } >> + >> ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val); >> >> /* Enable Auto enumeration */ >> @@ -1200,7 +1207,7 @@ static int qcom_swrm_probe(struct platform_device *pdev) >> struct qcom_swrm_ctrl *ctrl; >> const struct qcom_swrm_data *data; >> int ret; >> - u32 val; >> + int val, swrm_hctl_reg = 0; >> >> ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); >> if (!ctrl) >> @@ -1251,6 +1258,9 @@ static int qcom_swrm_probe(struct platform_device *pdev) >> ctrl->bus.port_ops = &qcom_swrm_port_ops; >> ctrl->bus.compute_params = &qcom_swrm_compute_params; >> >> + if (!of_property_read_u32(dev->of_node, "qcom,swrm-hctl-reg", &swrm_hctl_reg)) >> + ctrl->swrm_hctl_reg = devm_ioremap(&pdev->dev, swrm_hctl_reg, 0x4); > Nack. > > You may not pull an address to a single register out of an undocumented > DT property and blindly ioremap that. > > And you surely should check for errors here, to avoid magical errors > caused by this ioremap failing and your bit not being cleared. > > Thanks, > Bjorn Okay. will add error check, as Bossart Suggested. > >> + >> ret = qcom_swrm_get_port_config(ctrl); >> if (ret) >> goto err_clk; >> -- >> Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., >> is a member of Code Aurora Forum, a Linux Foundation Collaborative Project. >> -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.