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[2620:137:e000::1:20]) by mx.google.com with ESMTP id ka4-20020a170903334400b0019e69892709si15894268plb.596.2023.03.09.00.57.41; Thu, 09 Mar 2023 00:57:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=EHz2tjmu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229876AbjCIIwQ (ORCPT + 99 others); Thu, 9 Mar 2023 03:52:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230242AbjCIIwN (ORCPT ); Thu, 9 Mar 2023 03:52:13 -0500 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A3F7DD341 for ; Thu, 9 Mar 2023 00:51:48 -0800 (PST) Received: by mail-pg1-x52c.google.com with SMTP id d6so612789pgu.2 for ; Thu, 09 Mar 2023 00:51:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678351900; 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=UJ4Ik+ZoB8puIUL4lEznFsK6NoJYzy77sft3aaSqBZo=; b=EHz2tjmuYtQZC+ppekibs8hQWgaxRI51sxEeZgChp+yN4bpsVVdKIisDtsSCaGXMnR xJILmaZ4bRMjmFvOwP0QthT+rN/MrjSRhAt+gwVkdJOimOEOavrWXCdjBIcNCURdJPyK tAXJIGe/gNRW4ns5lGcwgWqkl2zsphW4qPhuhXLG53RuMAlcKqlqeDj6yhL6gSlePege Msz78QBorehzb7XY9+He4+K6xuSyyWQFWiQd60OhUHweKIUMH2zmA8L3H50FXzeU2wME Ge272vbogzr2YTgWwLC+WLCxYljVTUZpNiP1TM/O3WIdI+bH6IIE4c2dcgiswb8Oiqvr SQ7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678351900; 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=UJ4Ik+ZoB8puIUL4lEznFsK6NoJYzy77sft3aaSqBZo=; b=wuIt/rftHdCHNTmztnaadYEl92lsnft7skuPveiZyjZf+Wa3qiMLchIuPsEuOgA1pc e8MZIz1zLaSlA6Yra0Sz6rW2SYUrXO1Z6Ovah95AzvrDk9nVWSCrzh2AdFAqVvH4q32Y XN2gBIktb0/RYXVq/MGnrOyto1DOU7Crpbtm4Ul7r9V0pVm7XAlm4YX3MNbuJWtZ+kdi S9bfyDBM3lc4ZlQ+jqf+srCWPS8ZcIGcUCfGJIfJoTluzuqXmZWkg1buAJHigbZdDxy3 Lle0wBNHKHJYXHT5xJC6rcTSMcyTvAbnt6Lb96NwJNjXQ7HZbgpWCCZFavWbT8bt+idd ECqw== X-Gm-Message-State: AO0yUKVtvyBVX93OZjC2SBWmIXxHL+rjczMZOErivnPgGWx8nusRi5QW 3ShpcQJKMOMXv9xyvyysCu6B X-Received: by 2002:a62:546:0:b0:5a8:bcf2:125 with SMTP id 67-20020a620546000000b005a8bcf20125mr15409361pff.21.1678351900379; Thu, 09 Mar 2023 00:51:40 -0800 (PST) Received: from localhost.localdomain ([220.158.158.11]) by smtp.gmail.com with ESMTPSA id u4-20020aa78484000000b005809d382016sm10638604pfn.74.2023.03.09.00.51.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Mar 2023 00:51:40 -0800 (PST) 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 v2 06/17] PCI: qcom: Use bulk reset APIs for handling resets for IP rev 2.1.0 Date: Thu, 9 Mar 2023 14:20:51 +0530 Message-Id: <20230309085102.120977-7-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230309085102.120977-1-manivannan.sadhasivam@linaro.org> References: <20230309085102.120977-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1759879916708299523?= X-GMAIL-MSGID: =?utf-8?q?1759879916708299523?= All the resets are asserted and deasserted at the same time. So the bulk reset APIs can be used to handle them together. This simplifies the code a lot. While at it, let's also move the qcom_pcie_resources_2_1_0 struct below qcom_pcie_resources_1_0_0 to keep it sorted. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 129 +++++++------------------ 1 file changed, 34 insertions(+), 95 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 4179ac973147..2d9116464842 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -143,22 +143,8 @@ #define PERST_DELAY_US 1000 -#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 -#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 - #define QCOM_PCIE_CRC8_POLYNOMIAL (BIT(2) | BIT(1) | BIT(0)) -struct qcom_pcie_resources_2_1_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; - struct reset_control *pci_reset; - struct reset_control *axi_reset; - struct reset_control *ahb_reset; - struct reset_control *por_reset; - struct reset_control *phy_reset; - struct reset_control *ext_reset; - struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; -}; - struct qcom_pcie_resources_1_0_0 { struct clk *iface; struct clk *aux; @@ -168,6 +154,16 @@ struct qcom_pcie_resources_1_0_0 { struct regulator *vdda; }; +#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 +#define QCOM_PCIE_2_1_0_MAX_RESETS 6 +#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 +struct qcom_pcie_resources_2_1_0 { + struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; + struct reset_control_bulk_data resets[QCOM_PCIE_2_1_0_MAX_RESETS]; + int num_resets; + struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; +}; + #define QCOM_PCIE_2_3_2_MAX_SUPPLY 2 struct qcom_pcie_resources_2_3_2 { struct clk *aux_clk; @@ -295,6 +291,7 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; + bool is_apq = of_device_is_compatible(dev->of_node, "qcom,pcie-apq8064"); int ret; res->supplies[0].supply = "vdda"; @@ -321,28 +318,20 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) if (ret < 0) return ret; - res->pci_reset = devm_reset_control_get_exclusive(dev, "pci"); - if (IS_ERR(res->pci_reset)) - return PTR_ERR(res->pci_reset); - - res->axi_reset = devm_reset_control_get_exclusive(dev, "axi"); - if (IS_ERR(res->axi_reset)) - return PTR_ERR(res->axi_reset); - - res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb"); - if (IS_ERR(res->ahb_reset)) - return PTR_ERR(res->ahb_reset); + res->resets[0].id = "pci"; + res->resets[1].id = "axi"; + res->resets[2].id = "ahb"; + res->resets[3].id = "por"; + res->resets[4].id = "phy"; + res->resets[5].id = "ext"; - res->por_reset = devm_reset_control_get_exclusive(dev, "por"); - if (IS_ERR(res->por_reset)) - return PTR_ERR(res->por_reset); - - res->ext_reset = devm_reset_control_get_optional_exclusive(dev, "ext"); - if (IS_ERR(res->ext_reset)) - return PTR_ERR(res->ext_reset); + /* ext is optional on APQ8016 */ + res->num_resets = is_apq ? 5 : 6; + ret = devm_reset_control_bulk_get_exclusive(dev, res->num_resets, res->resets); + if (ret < 0) + return ret; - res->phy_reset = devm_reset_control_get_exclusive(dev, "phy"); - return PTR_ERR_OR_ZERO(res->phy_reset); + return 0; } static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) @@ -350,12 +339,7 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); - reset_control_assert(res->pci_reset); - reset_control_assert(res->axi_reset); - reset_control_assert(res->ahb_reset); - reset_control_assert(res->por_reset); - reset_control_assert(res->ext_reset); - reset_control_assert(res->phy_reset); + reset_control_bulk_assert(res->num_resets, res->resets); writel(1, pcie->parf + PARF_PHY_CTRL); @@ -370,12 +354,11 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) int ret; /* reset the PCIe interface as uboot can leave it undefined state */ - reset_control_assert(res->pci_reset); - reset_control_assert(res->axi_reset); - reset_control_assert(res->ahb_reset); - reset_control_assert(res->por_reset); - reset_control_assert(res->ext_reset); - reset_control_assert(res->phy_reset); + ret = reset_control_bulk_assert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot assert resets\n"); + return ret; + } ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies); if (ret < 0) { @@ -383,58 +366,14 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) return ret; } - ret = reset_control_deassert(res->ahb_reset); - if (ret) { - dev_err(dev, "cannot deassert ahb reset\n"); - goto err_deassert_ahb; - } - - ret = reset_control_deassert(res->ext_reset); - if (ret) { - dev_err(dev, "cannot deassert ext reset\n"); - goto err_deassert_ext; - } - - ret = reset_control_deassert(res->phy_reset); - if (ret) { - dev_err(dev, "cannot deassert phy reset\n"); - goto err_deassert_phy; - } - - ret = reset_control_deassert(res->pci_reset); - if (ret) { - dev_err(dev, "cannot deassert pci reset\n"); - goto err_deassert_pci; - } - - ret = reset_control_deassert(res->por_reset); - if (ret) { - dev_err(dev, "cannot deassert por reset\n"); - goto err_deassert_por; - } - - ret = reset_control_deassert(res->axi_reset); - if (ret) { - dev_err(dev, "cannot deassert axi reset\n"); - goto err_deassert_axi; + ret = reset_control_bulk_deassert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot deassert resets\n"); + regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); + return ret; } return 0; - -err_deassert_axi: - reset_control_assert(res->por_reset); -err_deassert_por: - reset_control_assert(res->pci_reset); -err_deassert_pci: - reset_control_assert(res->phy_reset); -err_deassert_phy: - reset_control_assert(res->ext_reset); -err_deassert_ext: - reset_control_assert(res->ahb_reset); -err_deassert_ahb: - regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); - - return ret; } static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie)