From patchwork Fri Jun 10 12:23:34 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: 580798 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24616C43334 for ; Fri, 10 Jun 2022 12:24:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234938AbiFJMYQ (ORCPT ); Fri, 10 Jun 2022 08:24:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347988AbiFJMYP (ORCPT ); Fri, 10 Jun 2022 08:24:15 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EA9A54F8E; Fri, 10 Jun 2022 05:24:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654863855; x=1686399855; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=iZU00wPd4VsQLMsMnl3IznLqoeJoDA5gPsj07qh4nJs=; b=CU+6XCtdpFVsv/cAifkKKCbftiQ5ssGyt9Jfszc2J1qWGySCYqVPFn7m x2ukxgbeqZLixCoDiw2myYHNOQvkNS3Y/NdEREjRQpzavNYE97Ja4fQ1r aJSMKEPs575Q69oPL+4VWLI69ymJRPpkztJNZ0rliMF0shJ/tqidO6LCE c=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-02.qualcomm.com with ESMTP; 10 Jun 2022 05:24:14 -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; 10 Jun 2022 05:24:14 -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; Fri, 10 Jun 2022 05:24:14 -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; Fri, 10 Jun 2022 05:24:08 -0700 From: Srinivasa Rao Mandadapu To: , , , , , , , , , , , , , , , , , CC: Srinivasa Rao Mandadapu Subject: [PATCH v5 1/2] soundwire: qcom: Add flag for software clock gating check Date: Fri, 10 Jun 2022 17:53:34 +0530 Message-ID: <1654863815-3970-2-git-send-email-quic_srivasam@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1654863815-3970-1-git-send-email-quic_srivasam@quicinc.com> References: <1654863815-3970-1-git-send-email-quic_srivasam@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 data structure. This is to avoid conflict between older architectures, where software clock gating is not required and on latest architectures, where software clock gating is mandatory. Signed-off-by: Srinivasa Rao Mandadapu Reviewed-by: Srinivas Kandagatla --- drivers/soundwire/qcom.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index a3fccf0..eb3c66e 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -181,6 +181,7 @@ struct qcom_swrm_ctrl { struct qcom_swrm_data { u32 default_cols; u32 default_rows; + bool sw_clk_gate_required; }; static const struct qcom_swrm_data swrm_v1_3_data = { @@ -1311,6 +1312,15 @@ 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_OR_NULL(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; @@ -1336,10 +1346,6 @@ 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;