From patchwork Thu Mar 16 08:11:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 664202 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 0A9AAC7618D for ; Thu, 16 Mar 2023 08:13:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231163AbjCPINH (ORCPT ); Thu, 16 Mar 2023 04:13:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231179AbjCPIMt (ORCPT ); Thu, 16 Mar 2023 04:12:49 -0400 Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEB2CB32AF for ; Thu, 16 Mar 2023 01:12:23 -0700 (PDT) Received: by mail-pf1-x436.google.com with SMTP id b20so612889pfo.6 for ; Thu, 16 Mar 2023 01:12:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678954336; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=RKGkhNWJDflF9COtN9J2WkrYKMdTvJxqMH/zsSiBzws=; b=jFyYU9AbT4nIFgJqbTnP0yx1wmxFYXYVr3UBqNqUw0fGkO49edFDSZXyJh6r7OchJ2 rXWXII3vg+o6fioikQFADONAwIxbfkcj8I8Fbspc1q3tYxRAovnkc2xNCsOhjtG5BHgI sdj7RM85poQbJdUFa0XvIRXvqP5lNzuQI4WTrRKCh2nIXQoltjqRVbyaEFAHg2e4TcYX 1gQubJ7QB2oL1TE0C7kEt2USwCu7ehwo5OYtdoaQczWSfgbgy8uQjV4qiWdCP0ST4fap rNg0Y9/Q9WQmK/5CNbyR/IuLfZT55k0YUFbZXLotW6o59RNOU0gRHT7yoy7L8jv+pkpQ xaDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678954336; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RKGkhNWJDflF9COtN9J2WkrYKMdTvJxqMH/zsSiBzws=; b=ci1f23vaJYBsU7auM8J73IqXci2RGxRufN8wZVxNFKpTKvCWVJJAN6fEaIwV5UUBxC Bt2PByHPvnNOpvED+jK+fA0uUmK0P5Z5RCJOSkAz/fq2sxeauHR1uRyEt7amkEcsu0cz uCRCSy6CJsSEFHlcL0K3VdNxawYtze1LcnbIHqgaLwAX44fPHifD2JSLmSYvYn+2Uote TxMVEaInCoEYhf2M9qBZoaj6s4cuEao3L3DKhyKjERLM6xZwU/t3jXXSxgHBJhC9hfsp IguDdKiZOxEDJB2Ys/nhhYc+qLDx8z71iAdMHMgLaZBHk58SX5SdwPvJ9YXtpuXYi5/g wy9Q== X-Gm-Message-State: AO0yUKX7hLcPxRpRkVcjtgWdN57hueEVhckIeOvL7d20Yg5+jEtsk4AR pm/y0TRpADdEMC1UlG3KPXoz X-Google-Smtp-Source: AK7set9o5drc11ruFy3nXJAqLM2G84tp0F80OComMCN68zBy6VIvf3aHChyyKQ/tL5NhzV4KE77V6Q== X-Received: by 2002:a62:190a:0:b0:625:f582:d46a with SMTP id 10-20020a62190a000000b00625f582d46amr830582pfz.18.1678954335747; Thu, 16 Mar 2023 01:12:15 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.12.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:12:15 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 10/19] PCI: qcom: Use bulk clock APIs for handling clocks for IP rev 2.3.3 Date: Thu, 16 Mar 2023 13:41:08 +0530 Message-Id: <20230316081117.14288-11-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org All the clocks are enabled and disabled at the same time. So the bulk clock APIs can be used to handle them together. This simplifies the code a lot. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 88 ++++++-------------------- 1 file changed, 20 insertions(+), 68 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 0d0d87743cec..42b851bdf1a9 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -169,6 +169,12 @@ struct qcom_pcie_resources_2_3_2 { struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY]; }; +#define QCOM_PCIE_2_3_3_MAX_CLOCKS 5 +struct qcom_pcie_resources_2_3_3 { + struct clk_bulk_data clks[QCOM_PCIE_2_3_3_MAX_CLOCKS]; + struct reset_control *rst[7]; +}; + #define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 struct qcom_pcie_resources_2_4_0 { struct clk_bulk_data clks[QCOM_PCIE_2_4_0_MAX_CLOCKS]; @@ -187,15 +193,6 @@ struct qcom_pcie_resources_2_4_0 { struct reset_control *phy_ahb_reset; }; -struct qcom_pcie_resources_2_3_3 { - struct clk *iface; - struct clk *axi_m_clk; - struct clk *axi_s_clk; - struct clk *ahb_clk; - struct clk *aux_clk; - struct reset_control *rst[7]; -}; - /* 6 clocks typically, 7 for sm8250 */ struct qcom_pcie_resources_2_7_0 { struct clk_bulk_data clks[12]; @@ -896,26 +893,17 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) const char *rst_names[] = { "axi_m", "axi_s", "pipe", "axi_m_sticky", "sticky", "ahb", "sleep", }; + int ret; - res->iface = devm_clk_get(dev, "iface"); - if (IS_ERR(res->iface)) - return PTR_ERR(res->iface); - - res->axi_m_clk = devm_clk_get(dev, "axi_m"); - if (IS_ERR(res->axi_m_clk)) - return PTR_ERR(res->axi_m_clk); - - res->axi_s_clk = devm_clk_get(dev, "axi_s"); - if (IS_ERR(res->axi_s_clk)) - return PTR_ERR(res->axi_s_clk); - - res->ahb_clk = devm_clk_get(dev, "ahb"); - if (IS_ERR(res->ahb_clk)) - return PTR_ERR(res->ahb_clk); + res->clks[0].id = "iface"; + res->clks[1].id = "axi_m"; + res->clks[2].id = "axi_s"; + res->clks[3].id = "ahb"; + res->clks[4].id = "aux"; - res->aux_clk = devm_clk_get(dev, "aux"); - if (IS_ERR(res->aux_clk)) - return PTR_ERR(res->aux_clk); + ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); + if (ret < 0) + return ret; for (i = 0; i < ARRAY_SIZE(rst_names); i++) { res->rst[i] = devm_reset_control_get(dev, rst_names[i]); @@ -930,11 +918,7 @@ static void qcom_pcie_deinit_2_3_3(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3; - clk_disable_unprepare(res->iface); - clk_disable_unprepare(res->axi_m_clk); - clk_disable_unprepare(res->axi_s_clk); - clk_disable_unprepare(res->ahb_clk); - clk_disable_unprepare(res->aux_clk); + clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); } static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) @@ -969,47 +953,15 @@ static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) */ usleep_range(2000, 2500); - ret = clk_prepare_enable(res->iface); - if (ret) { - dev_err(dev, "cannot prepare/enable core clock\n"); - goto err_clk_iface; - } - - ret = clk_prepare_enable(res->axi_m_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable core clock\n"); - goto err_clk_axi_m; - } - - ret = clk_prepare_enable(res->axi_s_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable axi slave clock\n"); - goto err_clk_axi_s; - } - - ret = clk_prepare_enable(res->ahb_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable ahb clock\n"); - goto err_clk_ahb; - } - - ret = clk_prepare_enable(res->aux_clk); + ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); if (ret) { - dev_err(dev, "cannot prepare/enable aux clock\n"); - goto err_clk_aux; + dev_err(dev, "cannot prepare/enable clocks\n"); + goto err_assert_resets; } return 0; -err_clk_aux: - clk_disable_unprepare(res->ahb_clk); -err_clk_ahb: - clk_disable_unprepare(res->axi_s_clk); -err_clk_axi_s: - clk_disable_unprepare(res->axi_m_clk); -err_clk_axi_m: - clk_disable_unprepare(res->iface); -err_clk_iface: +err_assert_resets: /* * Not checking for failure, will anyway return * the original failure in 'ret'.