From patchwork Thu May 12 17:29:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 571837 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 D1442C433FE for ; Thu, 12 May 2022 17:29:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357032AbiELR3P (ORCPT ); Thu, 12 May 2022 13:29:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357036AbiELR3O (ORCPT ); Thu, 12 May 2022 13:29:14 -0400 Received: from mail-lf1-x130.google.com (mail-lf1-x130.google.com [IPv6:2a00:1450:4864:20::130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC18E26ADBA for ; Thu, 12 May 2022 10:29:12 -0700 (PDT) Received: by mail-lf1-x130.google.com with SMTP id bu29so10409946lfb.0 for ; Thu, 12 May 2022 10:29:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/RjHcoAJqYq4F8/tr8yoLa5s8/y3uHGzocs96Zx+btQ=; b=xusnHu6ESMmqZXnAdgoffB7Hk6KtNd9Hk3yP1Cqj6XR26DnruUyxx4idvw7d4AYCku YQiwNAdxW9qOIqiFwPovx26Ut79/jfzXz+MDw5+8/jopbFD2s3Y6PXMMbY7J/OEdH7t+ 5El6fX1cMVBANfwnsoBFreL9CGSvFm/DmmXnjI5yrfQTYqjvXoK2EGqRgaOBrHR8Aizz TbTXWghzQ2dbRscv1T1YsO/+b1eVNWab8CcmEXENVvHMussRu9h2pvw6lgfeBCRmdzIL mKutngHdjpnjMj6wuseNkC9iZty8GDIxhzn+TqdzuzZ6QpBZ/ZywnK5LrTv7k9f50POl 15jg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/RjHcoAJqYq4F8/tr8yoLa5s8/y3uHGzocs96Zx+btQ=; b=PtrK7dymXHh9fPfxmBCY/e5F84ZNLd/+SHPQs1IeqiPtV42jti+Ck4kcu/ulAO5qOd USWe1WmrTA+r3oiyNh1xeHn0zWCZ6NYXg1anN3HL7RgS9EwxTc4XIGmpvkllfQ6FgDKt K3jjp7iXsTUVJpLHy892PhUhzBVzaR4JHH6KR/BUL/aqJSwzKP9I/D5H/liv9seBxljq uXDW8PHdkuFalGlXOmruTGQOHQrwykPrnprjlyG3DkVmIOjUiTuyt7Sc5gUuz/TFLyPc itsBC4/OaDc9EublpwGl1Emp+spEEjPx/T6Z0wqGNaBp9b/o7bfmn918j64kbEDyvfxB YEUQ== X-Gm-Message-State: AOAM532P+fHDgIcZK/LLfZ4CHAgyffVIkwodwfmXKaLEtcdPgSZrtvdI JyjhrHxL8Dw0kHtnskYXMre+yw== X-Google-Smtp-Source: ABdhPJxRFjNHuycXFm9sY/HPxSnvUIWBe6cD+D2bSk08qZYY1CVWEgQwPgXUqPicmzYATgsQ8F9Yww== X-Received: by 2002:a05:6512:3a86:b0:472:6287:6994 with SMTP id q6-20020a0565123a8600b0047262876994mr623683lfu.16.1652376551256; Thu, 12 May 2022 10:29:11 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id y10-20020a2e95ca000000b0024f3d1dae9asm11520ljh.34.2022.05.12.10.29.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 May 2022 10:29:10 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Stanimir Varbanov , Lorenzo Pieralisi , Rob Herring , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas , Michael Turquette , Stephen Boyd , Johan Hovold , Manivannan Sadhasivam Cc: Prasad Malisetty , Vinod Koul , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v5 1/5] PCI: qcom: Remove unnecessary pipe_clk handling Date: Thu, 12 May 2022 20:29:05 +0300 Message-Id: <20220512172909.2436302-2-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220512172909.2436302-1-dmitry.baryshkov@linaro.org> References: <20220512172909.2436302-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org PCIe PHY drivers (both QMP and PCIe2) already do clk_prepare_enable() / clk_prepare_disable() pipe_clk. Remove extra calls to enable/disable this clock from the PCIe driver, so that the PHY driver can manage the clock on its own. Reviewed-by: Bjorn Andersson Reviewed-by: Manivannan Sadhasivam Signed-off-by: Dmitry Baryshkov Reviewed-by: Johan Hovold --- drivers/pci/controller/dwc/pcie-qcom.c | 44 ++------------------------ 1 file changed, 3 insertions(+), 41 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 57636246cecc..a6becafb6a77 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -128,7 +128,6 @@ struct qcom_pcie_resources_2_3_2 { struct clk *master_clk; struct clk *slave_clk; struct clk *cfg_clk; - struct clk *pipe_clk; struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY]; }; @@ -165,7 +164,6 @@ struct qcom_pcie_resources_2_7_0 { int num_clks; struct regulator_bulk_data supplies[2]; struct reset_control *pci_reset; - struct clk *pipe_clk; struct clk *pipe_clk_src; struct clk *phy_pipe_clk; struct clk *ref_clk_src; @@ -597,8 +595,7 @@ static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie) if (IS_ERR(res->slave_clk)) return PTR_ERR(res->slave_clk); - res->pipe_clk = devm_clk_get(dev, "pipe"); - return PTR_ERR_OR_ZERO(res->pipe_clk); + return 0; } static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie) @@ -613,13 +610,6 @@ static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie) regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } -static void qcom_pcie_post_deinit_2_3_2(struct qcom_pcie *pcie) -{ - struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2; - - clk_disable_unprepare(res->pipe_clk); -} - static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2; @@ -694,22 +684,6 @@ static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie) return ret; } -static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie) -{ - struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2; - struct dw_pcie *pci = pcie->pci; - struct device *dev = pci->dev; - int ret; - - ret = clk_prepare_enable(res->pipe_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable pipe clock\n"); - return ret; - } - - return 0; -} - static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0; @@ -1198,8 +1172,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) return PTR_ERR(res->ref_clk_src); } - res->pipe_clk = devm_clk_get(dev, "pipe"); - return PTR_ERR_OR_ZERO(res->pipe_clk); + return 0; } static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) @@ -1292,14 +1265,7 @@ static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie) if (pcie->cfg->pipe_clk_need_muxing) clk_set_parent(res->pipe_clk_src, res->phy_pipe_clk); - return clk_prepare_enable(res->pipe_clk); -} - -static void qcom_pcie_post_deinit_2_7_0(struct qcom_pcie *pcie) -{ - struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; - - clk_disable_unprepare(res->pipe_clk); + return 0; } static int qcom_pcie_link_up(struct dw_pcie *pci) @@ -1449,9 +1415,7 @@ static const struct qcom_pcie_ops ops_1_0_0 = { static const struct qcom_pcie_ops ops_2_3_2 = { .get_resources = qcom_pcie_get_resources_2_3_2, .init = qcom_pcie_init_2_3_2, - .post_init = qcom_pcie_post_init_2_3_2, .deinit = qcom_pcie_deinit_2_3_2, - .post_deinit = qcom_pcie_post_deinit_2_3_2, .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, }; @@ -1478,7 +1442,6 @@ static const struct qcom_pcie_ops ops_2_7_0 = { .deinit = qcom_pcie_deinit_2_7_0, .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, .post_init = qcom_pcie_post_init_2_7_0, - .post_deinit = qcom_pcie_post_deinit_2_7_0, }; /* Qcom IP rev.: 1.9.0 */ @@ -1488,7 +1451,6 @@ static const struct qcom_pcie_ops ops_1_9_0 = { .deinit = qcom_pcie_deinit_2_7_0, .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, .post_init = qcom_pcie_post_init_2_7_0, - .post_deinit = qcom_pcie_post_deinit_2_7_0, .config_sid = qcom_pcie_config_sid_sm8250, };