From patchwork Wed Jun 8 14:02:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivasa Rao Mandadapu X-Patchwork-Id: 12873556 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 69604C433EF for ; Wed, 8 Jun 2022 14:04:23 +0000 (UTC) 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 A068F18D0; Wed, 8 Jun 2022 16:03:31 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz A068F18D0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1654697061; bh=Aa0EHCYrjjH2nKg3v0rbeMIWnIY6F3Nz1RxH8uPRjbE=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=KzefhKqVIEWMMPQV7kTit/RIMRTX3w+gdsc6Ju+vhnVI3bxxv2RNsf3STvSBCzI6D aTOv9aDn/j9G2pWTSWyHTQWb4pygnFaxynI4ZVtteTj83/sbg5+pE7qF8qZAskzKbq kTdImIJNoQDA757DrkfPIjOjuG/TxLet91ITd8AA= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 9BFFDF80520; Wed, 8 Jun 2022 16:02:51 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 289B4F804A9; Wed, 8 Jun 2022 16:02:50 +0200 (CEST) Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 99EFAF8026D for ; Wed, 8 Jun 2022 16:02:43 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 99EFAF8026D Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="uSABHb1g" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654696964; x=1686232964; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=1SWFTZnjukLK0KQqgPs8GErWbBROG4unQYDJ/ttNtLk=; b=uSABHb1ghDmVIT/F5SHPTCAxRtdHW3qoQdng5vEQBgMNCIATa8jz3nNu Ag53ypYm90c6OW9QtWq76JQh85g7jIOd0SZvhsrm/Jgu13W8rrVDrVkKq kq68NwbhnkX9lO+6Czv5MffpOA+B/z0R7htBWlQAPHUz0wG5wI9i+t0q0 Q=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-01.qualcomm.com with ESMTP; 08 Jun 2022 07:02:43 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg02-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2022 07:02:42 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 8 Jun 2022 07:02:42 -0700 Received: from hu-srivasam-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 8 Jun 2022 07:02:36 -0700 From: Srinivasa Rao Mandadapu To: , , , , , , , , , , , , , , , , , Subject: [PATCH v3 2/2] ASoC: qcom: soundwire: Add software clock gating requirement check Date: Wed, 8 Jun 2022 19:32:09 +0530 Message-ID: <1654696929-20205-3-git-send-email-quic_srivasam@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1654696929-20205-1-git-send-email-quic_srivasam@quicinc.com> References: <1654696929-20205-1-git-send-email-quic_srivasam@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Cc: Srinivasa Rao Mandadapu 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" Validate software clock gating required or not and do software clock gating on hclk if soundwire is operational and keep it running by adding flag in private dat structure. This is to avoid conflict between older architectures, where software clock gating is not required and on latest architectues, where software clock gating is mandatory. Signed-off-by: Srinivasa Rao Mandadapu Reviewed-by: Srinivas Kandagatla --- drivers/soundwire/qcom.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 38c3bf5..ebd7479 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -194,6 +194,12 @@ static const struct qcom_swrm_data swrm_v1_5_data = { .default_cols = 16, }; +static const struct qcom_swrm_data swrm_v1_6_data = { + .default_rows = 50, + .default_cols = 16, + .sw_clk_gate_required = true, +}; + #define to_qcom_sdw(b) container_of(b, struct qcom_swrm_ctrl, bus) static int qcom_swrm_ahb_reg_read(struct qcom_swrm_ctrl *ctrl, int reg, @@ -659,7 +665,8 @@ 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); - reset_control_reset(ctrl->audio_cgcr); + if (ctrl->audio_cgcr) + reset_control_reset(ctrl->audio_cgcr); ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val); @@ -1312,6 +1319,15 @@ static int qcom_swrm_probe(struct platform_device *pdev) return PTR_ERR(ctrl->mmio); } + if (data->sw_clk_gate_required) { + ctrl->audio_cgcr = devm_reset_control_get_exclusive(dev, "swr_audio_cgcr"); + if (IS_ERR(ctrl->audio_cgcr)) { + dev_err(dev, "Failed to get cgcr reset ctrl required for SW gating\n"); + ret = PTR_ERR(ctrl->audio_cgcr); + goto err_init; + } + } + ctrl->irq = of_irq_get(dev->of_node, 0); if (ctrl->irq < 0) { ret = ctrl->irq; @@ -1337,10 +1353,6 @@ static int qcom_swrm_probe(struct platform_device *pdev) ctrl->bus.compute_params = &qcom_swrm_compute_params; ctrl->bus.clk_stop_timeout = 300; - ctrl->audio_cgcr = devm_reset_control_get_exclusive(dev, "swr_audio_cgcr"); - if (IS_ERR(ctrl->audio_cgcr)) - dev_err(dev, "Failed to get audio_cgcr reset required for soundwire-v1.6.0\n"); - ret = qcom_swrm_get_port_config(ctrl); if (ret) goto err_clk; @@ -1494,7 +1506,8 @@ static int __maybe_unused swrm_runtime_resume(struct device *dev) qcom_swrm_get_device_status(ctrl); sdw_handle_slave_status(&ctrl->bus, ctrl->status); } else { - reset_control_reset(ctrl->audio_cgcr); + if (ctrl->audio_cgcr) + reset_control_reset(ctrl->audio_cgcr); ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START); ctrl->reg_write(ctrl, SWRM_INTERRUPT_CLEAR, @@ -1559,7 +1572,7 @@ static const struct dev_pm_ops swrm_dev_pm_ops = { static const struct of_device_id qcom_swrm_of_match[] = { { .compatible = "qcom,soundwire-v1.3.0", .data = &swrm_v1_3_data }, { .compatible = "qcom,soundwire-v1.5.1", .data = &swrm_v1_5_data }, - { .compatible = "qcom,soundwire-v1.6.0", .data = &swrm_v1_5_data }, + { .compatible = "qcom,soundwire-v1.6.0", .data = &swrm_v1_6_data }, {/* sentinel */}, };