From patchwork Mon Mar 25 13:16:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602157 Received: from mail-lj1-f173.google.com (mail-lj1-f173.google.com [209.85.208.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0354713E3FC for ; Mon, 25 Mar 2024 13:16:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372622; cv=none; b=CctuYfxsoMyuEvvHuLx0TuOpWFcOBNkCGpBYNysdXdwXrlD/tpOojPGIh+WznGdce+OQo7Cw2Q3j15X64U56QrdcGGJfENcFE7DxobNxJwZeq7XqPWJJUSJVF9g5ePQRLYsYe6MCioWG6wjZ+uGqMTXmIKmJ3doUEPzHsegZWNg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372622; c=relaxed/simple; bh=umsASWScraRruZvXdnmzX+2rRPtkGm6CyEV2OmvBy7E=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=UO/KLvBmGMvZf0iNo49w1xHtMAEqehMPHww+DF415rrFquRnv5mYwyCPrjVwp7OhKfK/hT4Z9lCulu6Ukt79XMzrlLyZdhgM6lJlcYbMVREpUgi7hybcG1ZQg9hDjMvnURqAQgw84ZWP2YsW6dyof3Q1y1ls8+klGgq+e9vDKqw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=OY/nE9Jo; arc=none smtp.client-ip=209.85.208.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="OY/nE9Jo" Received: by mail-lj1-f173.google.com with SMTP id 38308e7fff4ca-2d29aad15a5so55110891fa.3 for ; Mon, 25 Mar 2024 06:16:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1711372618; x=1711977418; darn=vger.kernel.org; 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=42yZYptcgZvWjTHjWqqNlYhVo8nNiy2t/Uk2MgznhqE=; b=OY/nE9JoWvTSiSHrx6GYHQ1SAsVh8ZjTSOdeRYBKQmI02iiz4d5RbMBBTcZtsTtQUG HNC4+cVe6XT40KINgpbFkIwUQK7bdhWFj3W7J6dQFDlZrR9WlN0ermaBxp7zdr3cR4l2 +jtbh4hurca3kmY+NiIwFrLl2GsjZkoNdrst3KscCUgNYQArOL5gH5RLf8F24SRP/Thj 36sSQsBRdNaSP019Y2qxuFCC3gf5CPpg5b47X5LLldk7d6R4pMrwbLXsCq2LCyOG7ZhI C1oGl2uGCbCKpBAgJ1BVbwzQSOmZgGQFVF61qoBHH8KzyAdTyDSIKIznNpW+Ydsn5lm3 cBkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711372618; x=1711977418; 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=42yZYptcgZvWjTHjWqqNlYhVo8nNiy2t/Uk2MgznhqE=; b=CPPgXpTo8iCouKrLMhzeDHM2sOhEobYp9igus4nobl7cK+W5JAPAJ4ORke4SQzbQg6 DfAXWAQbTRqXrEMmAu/zdGjAuq64uY/yWt9drHnHoZ8we5YoeFG3si9KYwOFhj/z6GU0 P84r163qH+DJ1YsZQN8ePFA4xyuPanuJoMrCd34ZWLthgDj0PVAhi1oZPS1bOzxqPFhC cIYJ7b8gS+mSCGUb9LHQO80J1mbGbMIr6RVqqyS7fnygOitx4Zl+LZ7Jq0cGRfuTx43X RbjusM0uy3lL9q+mmVj2zejqMwbJlO3SF/nmiaiQLk/h39B2nd5fz2IUwrs4BrHgRNXs 8lfQ== X-Forwarded-Encrypted: i=1; AJvYcCXw9mjoKFbRXtoYLoZV3WL1Q6hfqpYO23Y66/FwRv9EL2MITYYHSIUZXjRjhPtQ0akEGNPgzx/ncSqZD1IuDQKOZx4awkWD X-Gm-Message-State: AOJu0YyFRVrBzsWRXbggZXLInNbNyRQdn35wuSg94prRLt0X3L7DCQsQ AEjqdBL/23JM1dO81DYvY8WpZdxXkPic6gZyZhsrDLvgYYp7gIxHJrm3lIsz0V8= X-Google-Smtp-Source: AGHT+IFRrpEIcF9g0oJWmhIi/sNJq/ERO6ZaZaYx2MQaEKjs8/2dotoG1QNrwY1XmiNhKxbpF4ccvw== X-Received: by 2002:a2e:98c2:0:b0:2d6:9481:b38 with SMTP id s2-20020a2e98c2000000b002d694810b38mr4810233ljj.20.1711372617692; Mon, 25 Mar 2024 06:16:57 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.16.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:16:56 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 01/16] regulator: dt-bindings: describe the PMU module of the QCA6390 package Date: Mon, 25 Mar 2024 14:16:09 +0100 Message-Id: <20240325131624.26023-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski The QCA6390 package contains discreet modules for WLAN and Bluetooth. They are powered by the Power Management Unit (PMU) that takes inputs from the host and provides LDO outputs. This document describes this module. Signed-off-by: Bartosz Golaszewski Acked-by: Mark Brown Reviewed-by: Krzysztof Kozlowski --- .../bindings/regulator/qcom,qca6390-pmu.yaml | 151 ++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml diff --git a/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml b/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml new file mode 100644 index 000000000000..9d39ff9a75fd --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml @@ -0,0 +1,151 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/qcom,qca6390-pmu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies, Inc. QCA6390 PMU Regulators + +maintainers: + - Bartosz Golaszewski + +description: + The QCA6390 package contains discreet modules for WLAN and Bluetooth. They + are powered by the Power Management Unit (PMU) that takes inputs from the + host and provides LDO outputs. This document describes this module. + +properties: + compatible: + const: qcom,qca6390-pmu + + vddaon-supply: + description: VDD_AON supply regulator handle + + vddpmu-supply: + description: VDD_PMU supply regulator handle + + vddrfa0p95-supply: + description: VDD_RFA_0P95 supply regulator handle + + vddrfa1p3-supply: + description: VDD_RFA_1P3 supply regulator handle + + vddrfa1p9-supply: + description: VDD_RFA_1P9 supply regulator handle + + vddpcie1p3-supply: + description: VDD_PCIE_1P3 supply regulator handle + + vddpcie1p9-supply: + description: VDD_PCIE_1P9 supply regulator handle + + vddio-supply: + description: VDD_IO supply regulator handle + + wlan-enable-gpios: + maxItems: 1 + description: GPIO line enabling the ATH11K WLAN module supplied by the PMU + + bt-enable-gpios: + maxItems: 1 + description: GPIO line enabling the ATH11K Bluetooth module supplied by the PMU + + regulators: + type: object + description: + LDO outputs of the PMU + + patternProperties: + "^ldo[0-9]$": + $ref: regulator.yaml# + type: object + unevaluatedProperties: false + + additionalProperties: false + +required: + - compatible + - regulators + +allOf: + - if: + properties: + compatible: + contains: + const: qcom,qca6390-pmu + then: + required: + - vddaon-supply + - vddpmu-supply + - vddrfa0p95-supply + - vddrfa1p3-supply + - vddrfa1p9-supply + - vddpcie1p3-supply + - vddpcie1p9-supply + - vddio-supply + +additionalProperties: false + +examples: + - | + #include + pmu { + compatible = "qcom,qca6390-pmu"; + + pinctrl-names = "default"; + pinctrl-0 = <&bt_en_state>, <&wlan_en_state>; + + vddaon-supply = <&vreg_s6a_0p95>; + vddpmu-supply = <&vreg_s2f_0p95>; + vddrfa0p95-supply = <&vreg_s2f_0p95>; + vddrfa1p3-supply = <&vreg_s8c_1p3>; + vddrfa1p9-supply = <&vreg_s5a_1p9>; + vddpcie1p3-supply = <&vreg_s8c_1p3>; + vddpcie1p9-supply = <&vreg_s5a_1p9>; + vddio-supply = <&vreg_s4a_1p8>; + + wlan-enable-gpios = <&tlmm 20 GPIO_ACTIVE_HIGH>; + bt-enable-gpios = <&tlmm 21 GPIO_ACTIVE_HIGH>; + + regulators { + vreg_pmu_rfa_cmn: ldo0 { + regulator-name = "vreg_pmu_rfa_cmn"; + }; + + vreg_pmu_aon_0p59: ldo1 { + regulator-name = "vreg_pmu_aon_0p59"; + }; + + vreg_pmu_wlcx_0p8: ldo2 { + regulator-name = "vreg_pmu_wlcx_0p8"; + }; + + vreg_pmu_wlmx_0p85: ldo3 { + regulator-name = "vreg_pmu_wlmx_0p85"; + }; + + vreg_pmu_btcmx_0p85: ldo4 { + regulator-name = "vreg_pmu_btcmx_0p85"; + }; + + vreg_pmu_rfa_0p8: ldo5 { + regulator-name = "vreg_pmu_rfa_0p8"; + }; + + vreg_pmu_rfa_1p2: ldo6 { + regulator-name = "vreg_pmu_rfa_1p2"; + }; + + vreg_pmu_rfa_1p7: ldo7 { + regulator-name = "vreg_pmu_rfa_1p7"; + }; + + vreg_pmu_pcie_0p9: ldo8 { + regulator-name = "vreg_pmu_pcie_0p9"; + }; + + vreg_pmu_pcie_1p8: ldo9 { + regulator-name = "vreg_pmu_pcie_1p8"; + }; + }; + }; From patchwork Mon Mar 25 13:16:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602158 Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 41B1613E6C9 for ; Mon, 25 Mar 2024 13:17:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372624; cv=none; b=ptKThtA/wngJIE5edQIWii7o2olEd2SB38vqOyndy18m0Vy222ybBygIKJmhAUDmfC9dB/jfHrrJYu+y+aoGwxmIhM57+8lQunYmVLS+rw0DYVMWppxlTXpUdIDSsMkSYokIlNUQcI8zvUyAAZqJT9PRPJ//PgrSGQU3GvrvMJ4= ARC-Message-Signature: i=1; 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Mon, 25 Mar 2024 06:16:58 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 02/16] regulator: dt-bindings: describe the PMU module of the WCN7850 package Date: Mon, 25 Mar 2024 14:16:10 +0100 Message-Id: <20240325131624.26023-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski The WCN7850 package contains discreet modules for WLAN and Bluetooth. They are powered by the Power Management Unit (PMU) that takes inputs from the host and provides LDO outputs. Extend the bindings for QCA6390 to also document this model. Signed-off-by: Bartosz Golaszewski Acked-by: Mark Brown Reviewed-by: Krzysztof Kozlowski --- .../bindings/regulator/qcom,qca6390-pmu.yaml | 36 ++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml b/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml index 9d39ff9a75fd..2e543661a1e2 100644 --- a/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml +++ b/Documentation/devicetree/bindings/regulator/qcom,qca6390-pmu.yaml @@ -16,20 +16,37 @@ description: properties: compatible: - const: qcom,qca6390-pmu + enum: + - qcom,qca6390-pmu + - qcom,wcn7850-pmu + + vdd-supply: + description: VDD supply regulator handle vddaon-supply: description: VDD_AON supply regulator handle + vdddig-supply: + description: VDD_DIG supply regulator handle + vddpmu-supply: description: VDD_PMU supply regulator handle + vddio1p2-supply: + description: VDD_IO_1P2 supply regulator handle + vddrfa0p95-supply: description: VDD_RFA_0P95 supply regulator handle + vddrfa1p2-supply: + description: VDD_RFA_1P2 supply regulator handle + vddrfa1p3-supply: description: VDD_RFA_1P3 supply regulator handle + vddrfa1p8-supply: + description: VDD_RFA_1P8 supply regulator handle + vddrfa1p9-supply: description: VDD_RFA_1P9 supply regulator handle @@ -50,6 +67,10 @@ properties: maxItems: 1 description: GPIO line enabling the ATH11K Bluetooth module supplied by the PMU + clocks: + maxItems: 1 + description: Reference clock handle + regulators: type: object description: @@ -83,6 +104,19 @@ allOf: - vddpcie1p3-supply - vddpcie1p9-supply - vddio-supply + - if: + properties: + compatible: + contains: + const: qcom,wcn7850-pmu + then: + required: + - vdd-supply + - vddio-supply + - vddaon-supply + - vdddig-supply + - vddrfa1p2-supply + - vddrfa1p8-supply additionalProperties: false From patchwork Mon Mar 25 13:16:11 2024 Content-Type: text/plain; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski , Krzysztof Kozlowski Subject: [PATCH v6 03/16] dt-bindings: net: bluetooth: qualcomm: describe regulators for QCA6390 Date: Mon, 25 Mar 2024 14:16:11 +0100 Message-Id: <20240325131624.26023-4-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Bartosz Golaszewski QCA6390 has a compatible listed in the bindings but is missing the regulators description. Add the missing supply property and list the required ones in the allOf section. Signed-off-by: Bartosz Golaszewski Reviewed-by: Krzysztof Kozlowski --- .../net/bluetooth/qualcomm-bluetooth.yaml | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml b/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml index 528ef3572b62..d844acaec1d3 100644 --- a/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml +++ b/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml @@ -62,6 +62,9 @@ properties: vdddig-supply: description: VDD_DIG supply regulator handle + vddbtcmx-supply: + description: VDD_BT_CMX supply regulator handle + vddbtcxmx-supply: description: VDD_BT_CXMX supply regulator handle @@ -180,6 +183,20 @@ allOf: - vddrfa0p8-supply - vddrfa1p2-supply - vddrfa1p9-supply + - if: + properties: + compatible: + contains: + enum: + - qcom,qca6390-bt + then: + required: + - vddrfacmn-supply + - vddaon-supply + - vddbtcmx-supply + - vddrfa0p8-supply + - vddrfa1p2-supply + - vddrfa1p7-supply examples: - | From patchwork Mon Mar 25 13:16:12 2024 Content-Type: text/plain; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 04/16] dt-bindings: net: wireless: qcom,ath11k: describe the ath11k on QCA6390 Date: Mon, 25 Mar 2024 14:16:12 +0100 Message-Id: <20240325131624.26023-5-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Bartosz Golaszewski Add a PCI compatible for the ATH11K module on QCA6390 and describe the power inputs from the PMU that it consumes. Signed-off-by: Bartosz Golaszewski --- .../net/wireless/qcom,ath11k-pci.yaml | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml index 41d023797d7d..8675d7d0215c 100644 --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml @@ -17,6 +17,7 @@ description: | properties: compatible: enum: + - pci17cb,1101 # QCA6390 - pci17cb,1103 # WCN6855 reg: @@ -28,10 +29,55 @@ properties: string to uniquely identify variant of the calibration data for designs with colliding bus and device ids + vddrfacmn-supply: + description: VDD_RFA_CMN supply regulator handle + + vddaon-supply: + description: VDD_AON supply regulator handle + + vddwlcx-supply: + description: VDD_WL_CX supply regulator handle + + vddwlmx-supply: + description: VDD_WL_MX supply regulator handle + + vddrfa0p8-supply: + description: VDD_RFA_0P8 supply regulator handle + + vddrfa1p2-supply: + description: VDD_RFA_1P2 supply regulator handle + + vddrfa1p7-supply: + description: VDD_RFA_1P7 supply regulator handle + + vddpcie0p9-supply: + description: VDD_PCIE_0P9 supply regulator handle + + vddpcie1p8-supply: + description: VDD_PCIE_1P8 supply regulator handle + required: - compatible - reg +allOf: + - if: + properties: + compatible: + contains: + const: pci17cb,1101 + then: + required: + - vddrfacmn-supply + - vddaon-supply + - vddwlcx-supply + - vddwlmx-supply + - vddrfa0p8-supply + - vddrfa1p2-supply + - vddrfa1p7-supply + - vddpcie0p9-supply + - vddpcie1p8-supply + additionalProperties: false examples: From patchwork Mon Mar 25 13:16:13 2024 Content-Type: text/plain; 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Mon, 25 Mar 2024 06:17:03 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 05/16] dt-bindings: net: wireless: describe the ath12k PCI module Date: Mon, 25 Mar 2024 14:16:13 +0100 Message-Id: <20240325131624.26023-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Bartosz Golaszewski Add device-tree bindings for the ATH12K module found in the WCN7850 package. Signed-off-by: Bartosz Golaszewski Reviewed-by: Krzysztof Kozlowski --- .../bindings/net/wireless/qcom,ath12k.yaml | 100 ++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml new file mode 100644 index 000000000000..c0aad4815953 --- /dev/null +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml @@ -0,0 +1,100 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2024 Linaro Limited +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/wireless/qcom,ath12k.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies ath12k wireless devices (PCIe) + +maintainers: + - Bartosz Golaszewski + - Jeff Johnson + - Kalle Valo + +description: + Qualcomm Technologies IEEE 802.11ax PCIe devices. + +properties: + compatible: + enum: + - pci17cb,1107 # WCN7850 + + reg: + maxItems: 1 + + vddaon-supply: + description: VDD_AON supply regulator handle + + vddwlcx-supply: + description: VDD_WLCX supply regulator handle + + vddwlmx-supply: + description: VDD_WLMX supply regulator handle + + vddrfacmn-supply: + description: VDD_RFA_CMN supply regulator handle + + vddrfa0p8-supply: + description: VDD_RFA_0P8 supply regulator handle + + vddrfa1p2-supply: + description: VDD_RFA_1P2 supply regulator handle + + vddrfa1p8-supply: + description: VDD_RFA_1P8 supply regulator handle + + vddpcie0p9-supply: + description: VDD_PCIE_0P9 supply regulator handle + + vddpcie1p8-supply: + description: VDD_PCIE_1P8 supply regulator handle + +required: + - compatible + - reg + - vddaon-supply + - vddwlcx-supply + - vddwlmx-supply + - vddrfacmn-supply + - vddrfa0p8-supply + - vddrfa1p2-supply + - vddrfa1p8-supply + - vddpcie0p9-supply + - vddpcie1p8-supply + +additionalProperties: false + +examples: + - | + #include + #include + pcie { + #address-cells = <3>; + #size-cells = <2>; + + pcie@0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + bus-range = <0x01 0xff>; + + wifi@0 { + compatible = "pci17cb,1107"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + vddaon-supply = <&vreg_pmu_aon_0p59>; + vddwlcx-supply = <&vreg_pmu_wlcx_0p8>; + vddwlmx-supply = <&vreg_pmu_wlmx_0p85>; + vddrfacmn-supply = <&vreg_pmu_rfa_cmn>; + vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>; + vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>; + vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>; + vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>; + vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>; + }; + }; + }; From patchwork Mon Mar 25 13:16:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602162 Received: from mail-wr1-f49.google.com (mail-wr1-f49.google.com [209.85.221.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43AC9144D1A for ; 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Mon, 25 Mar 2024 06:17:06 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:05 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 06/16] arm64: dts: qcom: sm8550-qrd: add the Wifi node Date: Mon, 25 Mar 2024 14:16:14 +0100 Message-Id: <20240325131624.26023-7-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Describe the ath12k WLAN on-board the WCN7850 module present on the board. [Neil: authored the initial version of the change] Co-developed-by: Neil Armstrong Signed-off-by: Neil Armstrong Signed-off-by: Bartosz Golaszewski --- arch/arm64/boot/dts/qcom/sm8550-qrd.dts | 97 +++++++++++++++++++++++++ arch/arm64/boot/dts/qcom/sm8550.dtsi | 10 +++ 2 files changed, 107 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts index 92f015017418..caac40a799a5 100644 --- a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts +++ b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts @@ -214,6 +214,68 @@ vph_pwr: vph-pwr-regulator { regulator-always-on; regulator-boot-on; }; + + wcn7850-pmu { + compatible = "qcom,wcn7850-pmu"; + + pinctrl-names = "default"; + pinctrl-0 = <&wlan_en>, <&pmk8550_sleep_clk>; + + wlan-enable-gpios = <&tlmm 80 GPIO_ACTIVE_HIGH>; + /* + * TODO Add bt-enable-gpios once the Bluetooth driver is + * converted to using the power sequencer. + */ + + vdd-supply = <&vreg_s5g_0p85>; + vddio-supply = <&vreg_l15b_1p8>; + vddaon-supply = <&vreg_s2g_0p85>; + vdddig-supply = <&vreg_s4e_0p95>; + vddrfa1p2-supply = <&vreg_s4g_1p25>; + vddrfa1p8-supply = <&vreg_s6g_1p86>; + + regulators { + vreg_pmu_rfa_cmn: ldo0 { + regulator-name = "vreg_pmu_rfa_cmn"; + }; + + vreg_pmu_aon_0p59: ldo1 { + regulator-name = "vreg_pmu_aon_0p59"; + }; + + vreg_pmu_wlcx_0p8: ldo2 { + regulator-name = "vreg_pmu_wlcx_0p8"; + }; + + vreg_pmu_wlmx_0p85: ldo3 { + regulator-name = "vreg_pmu_wlmx_0p85"; + }; + + vreg_pmu_btcmx_0p85: ldo4 { + regulator-name = "vreg_pmu_btcmx_0p85"; + }; + + vreg_pmu_rfa_0p8: ldo5 { + regulator-name = "vreg_pmu_rfa_0p8"; + }; + + vreg_pmu_rfa_1p2: ldo6 { + regulator-name = "vreg_pmu_rfa_1p2"; + }; + + vreg_pmu_rfa_1p8: ldo7 { + regulator-name = "vreg_pmu_rfa_1p8"; + }; + + vreg_pmu_pcie_0p9: ldo8 { + regulator-name = "vreg_pmu_pcie_0p9"; + }; + + vreg_pmu_pcie_1p8: ldo9 { + regulator-name = "vreg_pmu_pcie_1p8"; + }; + }; + }; }; &apps_rsc { @@ -824,6 +886,23 @@ &pcie0 { status = "okay"; }; +&pcieport0 { + wifi@0 { + compatible = "pci17cb,1107"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + vddrfacmn-supply = <&vreg_pmu_rfa_cmn>; + vddaon-supply = <&vreg_pmu_aon_0p59>; + vddwlcx-supply = <&vreg_pmu_wlcx_0p8>; + vddwlmx-supply = <&vreg_pmu_wlmx_0p85>; + vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>; + vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>; + vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>; + vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>; + vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>; + }; +}; + &pcie0_phy { vdda-phy-supply = <&vreg_l1e_0p88>; vdda-pll-supply = <&vreg_l3e_1p2>; @@ -911,6 +990,17 @@ &pcie_1_phy_aux_clk { clock-frequency = <1000>; }; +&pmk8550_gpios { + pmk8550_sleep_clk: sleep-clk-state { + pins = "gpio3"; + function = "func1"; + input-disable; + output-enable; + bias-disable; + power-source = <0>; + }; +}; + &qupv3_id_0 { status = "okay"; }; @@ -1084,6 +1174,13 @@ wcd_default: wcd-reset-n-active-state { bias-disable; output-low; }; + + wlan_en: wlan-en-state { + pins = "gpio80"; + function = "gpio"; + drive-strength = <8>; + bias-pull-down; 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Mon, 25 Mar 2024 06:17:07 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:07 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 07/16] arm64: dts: qcom: sm8650-qrd: add the Wifi node Date: Mon, 25 Mar 2024 14:16:15 +0100 Message-Id: <20240325131624.26023-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Describe the ath12k WLAN on-board the WCN7850 module present on the board. [Neil: authored the initial version of the change] Co-developed-by: Neil Armstrong Signed-off-by: Neil Armstrong Signed-off-by: Bartosz Golaszewski --- arch/arm64/boot/dts/qcom/sm8650-qrd.dts | 89 +++++++++++++++++++++++++ arch/arm64/boot/dts/qcom/sm8650.dtsi | 10 +++ 2 files changed, 99 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts index b07cac2e5bc8..c87d21115716 100644 --- a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts +++ b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts @@ -203,6 +203,71 @@ wcd_codec_headset_in: endpoint { }; }; }; + + wcn7850-pmu { + compatible = "qcom,wcn7850-pmu"; + + pinctrl-names = "default"; + pinctrl-0 = <&wlan_en>; + + wlan-enable-gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>; + /* + * TODO Add bt-enable-gpios once the Bluetooth driver is + * converted to using the power sequencer. + */ + + vdd-supply = <&vreg_s4i_0p85>; + vddio-supply = <&vreg_l15b_1p8>; + vddio1p2-supply = <&vreg_l3c_1p2>; + vddaon-supply = <&vreg_s2c_0p8>; + vdddig-supply = <&vreg_s3c_0p9>; + vddrfa1p2-supply = <&vreg_s1c_1p2>; + vddrfa1p8-supply = <&vreg_s6c_1p8>; + + clocks = <&rpmhcc RPMH_RF_CLK1>; + + regulators { + vreg_pmu_rfa_cmn: ldo0 { + regulator-name = "vreg_pmu_rfa_cmn"; + }; + + vreg_pmu_aon_0p59: ldo1 { + regulator-name = "vreg_pmu_aon_0p59"; + }; + + vreg_pmu_wlcx_0p8: ldo2 { + regulator-name = "vreg_pmu_wlcx_0p8"; + }; + + vreg_pmu_wlmx_0p85: ldo3 { + regulator-name = "vreg_pmu_wlmx_0p85"; + }; + + vreg_pmu_btcmx_0p85: ldo4 { + regulator-name = "vreg_pmu_btcmx_0p85"; + }; + + vreg_pmu_rfa_0p8: ldo5 { + regulator-name = "vreg_pmu_rfa_0p8"; + }; + + vreg_pmu_rfa_1p2: ldo6 { + regulator-name = "vreg_pmu_rfa_1p2"; + }; + + vreg_pmu_rfa_1p8: ldo7 { + regulator-name = "vreg_pmu_rfa_1p8"; + }; + + vreg_pmu_pcie_0p9: ldo8 { + regulator-name = "vreg_pmu_pcie_0p9"; + }; + + vreg_pmu_pcie_1p8: ldo9 { + regulator-name = "vreg_pmu_pcie_1p8"; + }; + }; + }; }; &apps_rsc { @@ -845,6 +910,23 @@ &pcie0 { status = "okay"; }; +&pcieport0 { + wifi@0 { + compatible = "pci17cb,1107"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + vddrfacmn-supply = <&vreg_pmu_rfa_cmn>; + vddaon-supply = <&vreg_pmu_aon_0p59>; + vddwlcx-supply = <&vreg_pmu_wlcx_0p8>; + vddwlmx-supply = <&vreg_pmu_wlmx_0p85>; + vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>; + vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>; + vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>; + vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>; + vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>; + }; +}; + &pcie0_phy { vdda-phy-supply = <&vreg_l1i_0p88>; vdda-pll-supply = <&vreg_l3i_1p2>; @@ -1139,6 +1221,13 @@ wcd_default: wcd-reset-n-active-state { bias-disable; output-low; }; + + wlan_en: wlan-en-state { + pins = "gpio16"; + function = "gpio"; + drive-strength = <8>; + bias-pull-down; + }; }; &uart14 { diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi index 78757f01a7d8..693857905fe9 100644 --- a/arch/arm64/boot/dts/qcom/sm8650.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi @@ -2293,6 +2293,16 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, dma-coherent; status = "disabled"; + + pcieport0: pcie@0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + bus-range = <0x01 0xff>; + }; }; pcie0_phy: phy@1c06000 { From patchwork Mon Mar 25 13:16:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602163 Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D1C8C148831 for ; Mon, 25 Mar 2024 13:17:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372634; cv=none; b=KlA27Y8xqA4SdAR0bmwM3zJlPZoCSb/pCZVfuqbVacg7ZZJHTHyPZeqpBFCbYpmZNlxn10HrtTpmHchPbQ4pkf2RJcKwZK5eJad+DjxX9CIY4z7zXk+lhwXsgmeqLPwnRa/wqSewMx1zWUY1MEZC6tpjKgTHdSQyA17BJip1cno= ARC-Message-Signature: i=1; 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Mon, 25 Mar 2024 06:17:08 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 08/16] arm64: dts: qcom: qrb5165-rb5: add the Wifi node Date: Mon, 25 Mar 2024 14:16:16 +0100 Message-Id: <20240325131624.26023-9-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Add a node for the PMU module of the QCA6391 present on the RB5 board. Assign its LDO power outputs to the existing Bluetooth module. Add a node for the PCIe port to sm8250.dtsi and define the WLAN node on it in the board's .dts and also make it consume the power outputs of the PMU. Signed-off-by: Bartosz Golaszewski --- arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 103 ++++++++++++++++++++--- arch/arm64/boot/dts/qcom/sm8250.dtsi | 10 +++ 2 files changed, 102 insertions(+), 11 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts index cd0db4f31d4a..24f528fc741f 100644 --- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts +++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts @@ -108,6 +108,67 @@ lt9611_3v3: lt9611-3v3 { regulator-always-on; }; + qca6390-pmu { + compatible = "qcom,qca6390-pmu"; + + pinctrl-names = "default"; + pinctrl-0 = <&bt_en_state>, <&wlan_en_state>; + + vddaon-supply = <&vreg_s6a_0p95>; + vddpmu-supply = <&vreg_s2f_0p95>; + vddrfa0p95-supply = <&vreg_s2f_0p95>; + vddrfa1p3-supply = <&vreg_s8c_1p3>; + vddrfa1p9-supply = <&vreg_s5a_1p9>; + vddpcie1p3-supply = <&vreg_s8c_1p3>; + vddpcie1p9-supply = <&vreg_s5a_1p9>; + vddio-supply = <&vreg_s4a_1p8>; + + wlan-enable-gpios = <&tlmm 20 GPIO_ACTIVE_HIGH>; + bt-enable-gpios = <&tlmm 21 GPIO_ACTIVE_HIGH>; + + regulators { + vreg_pmu_rfa_cmn: ldo0 { + regulator-name = "vreg_pmu_rfa_cmn"; + }; + + vreg_pmu_aon_0p59: ldo1 { + regulator-name = "vreg_pmu_aon_0p59"; + }; + + vreg_pmu_wlcx_0p8: ldo2 { + regulator-name = "vreg_pmu_wlcx_0p8"; + }; + + vreg_pmu_wlmx_0p85: ldo3 { + regulator-name = "vreg_pmu_wlmx_0p85"; + }; + + vreg_pmu_btcmx_0p85: ldo4 { + regulator-name = "vreg_pmu_btcmx_0p85"; + }; + + vreg_pmu_rfa_0p8: ldo5 { + regulator-name = "vreg_pmu_rfa_0p8"; + }; + + vreg_pmu_rfa_1p2: ldo6 { + regulator-name = "vreg_pmu_rfa_1p2"; + }; + + vreg_pmu_rfa_1p7: ldo7 { + regulator-name = "vreg_pmu_rfa_1p7"; + }; + + vreg_pmu_pcie_0p9: ldo8 { + regulator-name = "vreg_pmu_pcie_0p9"; + }; + + vreg_pmu_pcie_1p8: ldo9 { + regulator-name = "vreg_pmu_pcie_1p8"; + }; + }; + }; + thermal-zones { conn-thermal { polling-delay-passive = <0>; @@ -734,6 +795,23 @@ &pcie0_phy { vdda-pll-supply = <&vreg_l9a_1p2>; }; +&pcieport0 { + wifi@0 { + compatible = "pci17cb,1101"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + vddrfacmn-supply = <&vreg_pmu_rfa_cmn>; + vddaon-supply = <&vreg_pmu_aon_0p59>; + vddwlcx-supply = <&vreg_pmu_wlcx_0p8>; + vddwlmx-supply = <&vreg_pmu_wlmx_0p85>; + vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>; + vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>; + vddrfa1p7-supply = <&vreg_pmu_rfa_1p7>; + vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>; + vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>; + }; +}; + &pcie1 { status = "okay"; }; @@ -1303,6 +1381,14 @@ sdc2_card_det_n: sd-card-det-n-state { function = "gpio"; bias-pull-up; }; + + wlan_en_state: wlan-default-state { + pins = "gpio20"; + function = "gpio"; + drive-strength = <16>; + output-low; + bias-pull-up; + }; }; &uart6 { @@ -1311,17 +1397,12 @@ &uart6 { bluetooth { compatible = "qcom,qca6390-bt"; - pinctrl-names = "default"; - pinctrl-0 = <&bt_en_state>; - - enable-gpios = <&tlmm 21 GPIO_ACTIVE_HIGH>; - - vddio-supply = <&vreg_s4a_1p8>; - vddpmu-supply = <&vreg_s2f_0p95>; - vddaon-supply = <&vreg_s6a_0p95>; - vddrfa0p9-supply = <&vreg_s2f_0p95>; - vddrfa1p3-supply = <&vreg_s8c_1p3>; - vddrfa1p9-supply = <&vreg_s5a_1p9>; 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Mon, 25 Mar 2024 06:17:10 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:10 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 09/16] PCI: hold the rescan mutex when scanning for the first time Date: Mon, 25 Mar 2024 14:16:17 +0100 Message-Id: <20240325131624.26023-10-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski With the introduction of PCI device power control drivers that will be able to trigger the port rescan when probing, we need to hold the rescan mutex during the initial pci_host_probe() too or the two could get in each other's way. Signed-off-by: Bartosz Golaszewski --- drivers/pci/probe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 1325fbae2f28..1802900328a0 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3066,7 +3066,9 @@ int pci_host_probe(struct pci_host_bridge *bridge) struct pci_bus *bus, *child; int ret; + pci_lock_rescan_remove(); ret = pci_scan_root_bus_bridge(bridge); + pci_unlock_rescan_remove(); if (ret < 0) { dev_err(bridge->dev.parent, "Scanning root bridge failed"); return ret; From patchwork Mon Mar 25 13:16:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602166 Received: from mail-wm1-f42.google.com (mail-wm1-f42.google.com [209.85.128.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 377B51422DA for ; Mon, 25 Mar 2024 13:17:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372638; cv=none; b=gvkQJmSn4jzJ/XmeoWlVbVsw2twO9bofpS1+eSwHoprao9BWlugrOWk2XkxE68vhSCfArikA+mn6X0xcnC/a2JUO2iE/r+OrtBFccOy5iTbU7XalBpttkOYCwBC77huxHFKbNtVMDlOQRWXq5lJ0vukJ3H+WcH/rNGFdQpW7yIA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372638; c=relaxed/simple; bh=iWQpZyVUYNR0FgdTLJWWfXolJLly1aZ0q2sdWcfiADU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dPa7B9qyVQtUEWQec703Sh0nxXoh1xuaS3F7xITG/5y5Ks5oka3jGArhqj8PWXC5nH+Zx6exSZP49IxKabB+D5YKiHv9TWJxnP0lssi2faJf94rTghPLdK+zICGcV+3Oszvg7eBNoHvtEIYRrOLrcifkY2z124/mrz2IWdQZdow= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=cUbS4nGT; arc=none smtp.client-ip=209.85.128.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="cUbS4nGT" Received: by mail-wm1-f42.google.com with SMTP id 5b1f17b1804b1-4147e135f4dso18284925e9.2 for ; Mon, 25 Mar 2024 06:17:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1711372632; x=1711977432; darn=vger.kernel.org; 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=VPKtETY44L+sLLhmL3uaX4nFnllKG+8eyvkbzTNtgX4=; b=cUbS4nGT0+lfRnrunIb/YNFs5x5KjLBB5tZj58rqQZ7yj/oqsNqHDCkLnoS6eAcE3p gsyW+n+o3iwItVVdhcFdeenW8F1X5Zt3O/JWzE37VCVkAFHXC8C8FnbosWgnOOP9C+01 mhG2DfaImEHlzrhbgbnliOF2Xe6PQzer30VhTpSvo9gydkqSBz3w+wqTbWeyNBwgkeqb VaocQURcHNwf9IiMy9cyCF2mMu3uwlcIcd9bFMW6hIMA32tf9SVptNUb0H6rESyOwQHK OXHdbOdnZFO0PnOCjWAH0Z2FaSVX1LU9+/EefNDKZsGMxv6Kqlm9cqyHLPM6gPRaOHty Mzhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711372632; x=1711977432; 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=VPKtETY44L+sLLhmL3uaX4nFnllKG+8eyvkbzTNtgX4=; b=P5zHoawnHjyn/gXSQ7ZTKNrGhyfvzQ1dSE0OSzdmuffv7YSFEMx0zWJtUK+myI+LqJ +o3OFhk1jpPo7XzhI2BGMyuX4BMmHDoSko3I/L5Ui3rJt/QJ3Mmn9yx7XRXHAbBRj2R0 G2i9D3ygYw6BOC3sF5Rx/QVMNlyUyo5D3GsgBFMm1likuOvESVGdKs2qvPrWnbM2ioes 9FbvhZBs9teEFax/TY+U9KLN74FmtSmMacrBDePxcsdFnqv4ZB2Gy1buSPP/+JNdctpE TlIlIUReuLzhkHvtwX3MS/mPq9/oWuhh+Lzamnt+x9NksfZzYYSjY43dO6QSpDN14lwB EMrQ== X-Forwarded-Encrypted: i=1; AJvYcCUSdUY9OHTu/iTYuknAee/aMU3qaT0Gg491OrPhvehiOJT6eb1TvRm/mJdJOLafe+CB3zfPldZBY0WORMWiA727HUYTpGmM X-Gm-Message-State: AOJu0YyWbUvnKmONrVmGPOfQ9m3jc9MeLgeyLRcNloey0LEKxaxUo+MM Fa5sD2+Z47cva4Z9r8HB9CkUym9i5nJUvNbtXDgBdFQJ0jXBNVng+Mmeyf6YiEg= X-Google-Smtp-Source: AGHT+IE8S1Cqc4BSl1gj1NJjC/8Phc5hQVnSu5kD3rjt0a7CtT1C9cZCCiVYJzGQ4RLrhpqJ51Qh5g== X-Received: by 2002:a5d:4bd1:0:b0:33d:b2d7:6264 with SMTP id l17-20020a5d4bd1000000b0033db2d76264mr4900718wrt.51.1711372632066; Mon, 25 Mar 2024 06:17:12 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:11 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 10/16] PCI/pwrctl: reuse the OF node for power controlled devices Date: Mon, 25 Mar 2024 14:16:18 +0100 Message-Id: <20240325131624.26023-11-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski With PCI power control we deal with two struct device objects bound to two different drivers but consuming the same OF node. We must not bind the pinctrl twice. To that end: before setting the OF node of the newly instantiated PCI device, check if a platform device consuming the same OF node doesn't already exist on the platform bus and - if so - mark the PCI device as reusing the OF node. Signed-off-by: Bartosz Golaszewski --- drivers/pci/of.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 51e3dd0ea5ab..b908fe1ae951 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -6,6 +6,7 @@ */ #define pr_fmt(fmt) "PCI: OF: " fmt +#include #include #include #include @@ -13,6 +14,7 @@ #include #include #include +#include #include "pci.h" #ifdef CONFIG_PCI @@ -25,16 +27,20 @@ */ int pci_set_of_node(struct pci_dev *dev) { - struct device_node *node; - if (!dev->bus->dev.of_node) return 0; - node = of_pci_find_child_device(dev->bus->dev.of_node, dev->devfn); + struct device_node *node __free(device_node) = + of_pci_find_child_device(dev->bus->dev.of_node, dev->devfn); if (!node) return 0; - device_set_node(&dev->dev, of_fwnode_handle(node)); + struct device *pdev __free(put_device) = + bus_find_device_by_of_node(&platform_bus_type, node); + if (pdev) + dev->bus->dev.of_node_reused = true; + + device_set_node(&dev->dev, of_fwnode_handle(no_free_ptr(node))); 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Mon, 25 Mar 2024 06:17:13 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 11/16] PCI/pwrctl: create platform devices for child OF nodes of the port node Date: Mon, 25 Mar 2024 14:16:19 +0100 Message-Id: <20240325131624.26023-12-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski In preparation for introducing PCI device power control - a set of library functions that will allow powering-up of PCI devices before they're detected on the PCI bus - we need to populate the devices defined on the device-tree. We are reusing the platform bus as it provides us with all the infrastructure we need to match the pwrctl drivers against the compatibles from OF nodes. These platform devices will be probed by the driver core and bound to the PCI pwrctl drivers we'll introduce later. Signed-off-by: Bartosz Golaszewski --- drivers/pci/bus.c | 9 ++++++++- drivers/pci/remove.c | 2 ++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 826b5016a101..17ab41094c4e 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include @@ -342,8 +343,14 @@ void pci_bus_add_device(struct pci_dev *dev) */ pcibios_bus_add_device(dev); pci_fixup_device(pci_fixup_final, dev); - if (pci_is_bridge(dev)) + if (pci_is_bridge(dev)) { of_pci_make_dev_node(dev); + retval = of_platform_populate(dev->dev.of_node, NULL, NULL, + &dev->dev); + if (retval) + pci_err(dev, "failed to populate child OF nodes (%d)\n", + retval); + } pci_create_sysfs_dev_files(dev); pci_proc_attach_device(dev); pci_bridge_d3_update(dev); diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index d749ea8250d6..fc9db2805888 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include #include +#include #include "pci.h" static void pci_free_resources(struct pci_dev *dev) @@ -22,6 +23,7 @@ static void pci_stop_dev(struct pci_dev *dev) device_release_driver(&dev->dev); 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Mon, 25 Mar 2024 06:17:14 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 12/16] PCI/pwrctl: add PCI power control core code Date: Mon, 25 Mar 2024 14:16:20 +0100 Message-Id: <20240325131624.26023-13-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Some PCI devices must be powered-on before they can be detected on the bus. Introduce a simple framework reusing the existing PCI OF infrastructure. The way this works is: a DT node representing a PCI device connected to the port can be matched against its power control platform driver. If the match succeeds, the driver is responsible for powering-up the device and calling pcie_pwrctl_device_set_ready() which will trigger a PCI bus rescan as well as subscribe to PCI bus notifications. When the device is detected and created, we'll make it consume the same DT node that the platform device did. When the device is bound, we'll create a device link between it and the parent power control device. Signed-off-by: Bartosz Golaszewski --- drivers/pci/Kconfig | 1 + drivers/pci/Makefile | 1 + drivers/pci/pwrctl/Kconfig | 8 +++ drivers/pci/pwrctl/Makefile | 4 ++ drivers/pci/pwrctl/core.c | 136 ++++++++++++++++++++++++++++++++++++ include/linux/pci-pwrctl.h | 51 ++++++++++++++ 6 files changed, 201 insertions(+) create mode 100644 drivers/pci/pwrctl/Kconfig create mode 100644 drivers/pci/pwrctl/Makefile create mode 100644 drivers/pci/pwrctl/core.c create mode 100644 include/linux/pci-pwrctl.h diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index d35001589d88..aa4d1833f442 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -296,5 +296,6 @@ source "drivers/pci/hotplug/Kconfig" source "drivers/pci/controller/Kconfig" source "drivers/pci/endpoint/Kconfig" source "drivers/pci/switch/Kconfig" +source "drivers/pci/pwrctl/Kconfig" endif diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 175302036890..8ddad57934a6 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_PCI) += access.o bus.o probe.o host-bridge.o \ obj-$(CONFIG_PCI) += msi/ obj-$(CONFIG_PCI) += pcie/ +obj-$(CONFIG_PCI) += pwrctl/ ifdef CONFIG_PCI obj-$(CONFIG_PROC_FS) += proc.o diff --git a/drivers/pci/pwrctl/Kconfig b/drivers/pci/pwrctl/Kconfig new file mode 100644 index 000000000000..96195395af69 --- /dev/null +++ b/drivers/pci/pwrctl/Kconfig @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0-only + +menu "PCI Power control drivers" + +config PCI_PWRCTL + tristate + +endmenu diff --git a/drivers/pci/pwrctl/Makefile b/drivers/pci/pwrctl/Makefile new file mode 100644 index 000000000000..52ae0640ef7b --- /dev/null +++ b/drivers/pci/pwrctl/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-$(CONFIG_PCI_PWRCTL) += pci-pwrctl-core.o +pci-pwrctl-core-y := core.o diff --git a/drivers/pci/pwrctl/core.c b/drivers/pci/pwrctl/core.c new file mode 100644 index 000000000000..11bd19519841 --- /dev/null +++ b/drivers/pci/pwrctl/core.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include + +static int pci_pwrctl_notify(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct pci_pwrctl *pwrctl = container_of(nb, struct pci_pwrctl, nb); + struct device *dev = data; + + if (dev_fwnode(dev) != dev_fwnode(pwrctl->dev)) + return NOTIFY_DONE; + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + /* + * We will have two struct device objects bound to two different + * drivers on different buses but consuming the same DT node. We + * must not bind the pins twice in this case but only once for + * the first device to be added. + * + * If we got here then the PCI device is the second after the + * power control platform device. Mark its OF node as reused. + */ + dev->of_node_reused = true; + break; + case BUS_NOTIFY_BOUND_DRIVER: + pwrctl->link = device_link_add(dev, pwrctl->dev, + DL_FLAG_AUTOREMOVE_CONSUMER); + if (!pwrctl->link) + dev_err(pwrctl->dev, "Failed to add device link\n"); + break; + case BUS_NOTIFY_UNBOUND_DRIVER: + if (pwrctl->link) + device_link_del(pwrctl->link); + break; + } + + return NOTIFY_DONE; +} + +/** + * pci_pwrctl_device_set_ready() - Notify the pwrctl subsystem that the PCI + * device is powered-up and ready to be detected. + * + * @pwrctl: PCI power control data + * + * Returns: + * 0 on success, negative error number on error. + * + * Note: + * This function returning 0 doesn't mean the device was detected. It means, + * that the bus rescan was successfully started. The device will get bound to + * its PCI driver asynchronously. + */ +int pci_pwrctl_device_set_ready(struct pci_pwrctl *pwrctl) +{ + int ret; + + if (!pwrctl->dev) + return -ENODEV; + + pwrctl->nb.notifier_call = pci_pwrctl_notify; + ret = bus_register_notifier(&pci_bus_type, &pwrctl->nb); + if (ret) + return ret; + + pci_lock_rescan_remove(); + pci_rescan_bus(to_pci_dev(pwrctl->dev->parent)->bus); + pci_unlock_rescan_remove(); + + return 0; +} +EXPORT_SYMBOL_GPL(pci_pwrctl_device_set_ready); + +/** + * pci_pwrctl_device_unset_ready() - Notify the pwrctl subsystem that the PCI + * device is about to be powered-down. + * + * @pwrctl: PCI power control data + */ +void pci_pwrctl_device_unset_ready(struct pci_pwrctl *pwrctl) +{ + /* + * We don't have to delete the link here. Typically, this function + * is only called when the power control device is being detached. If + * it is being detached then the child PCI device must have already + * been unbound too or the device core wouldn't let us unbind. + */ + bus_unregister_notifier(&pci_bus_type, &pwrctl->nb); +} +EXPORT_SYMBOL_GPL(pci_pwrctl_device_unset_ready); + +static void devm_pci_pwrctl_device_unset_ready(void *data) +{ + struct pci_pwrctl *pwrctl = data; + + pci_pwrctl_device_set_ready(pwrctl); +} + +/** + * devm_pci_pwrctl_device_set_ready - Managed variant of + * pci_pwrctl_device_set_ready(). + * + * @pwrctl: PCI power control data + * + * Returns: + * 0 on success, negative error number on error. + */ +int devm_pci_pwrctl_device_set_ready(struct device *dev, + struct pci_pwrctl *pwrctl) +{ + int ret; + + ret = pci_pwrctl_device_set_ready(pwrctl); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, + devm_pci_pwrctl_device_unset_ready, + pwrctl); +} +EXPORT_SYMBOL_GPL(devm_pci_pwrctl_device_set_ready); + +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_DESCRIPTION("PCI Device Power Control core driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/pci-pwrctl.h b/include/linux/pci-pwrctl.h new file mode 100644 index 000000000000..ae8324ea7eeb --- /dev/null +++ b/include/linux/pci-pwrctl.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#ifndef __PCI_PWRCTL_H__ +#define __PCI_PWRCTL_H__ + +#include + +struct device; +struct device_link; + +/* + * This is a simple framework for solving the issue of PCI devices that require + * certain resources (regulators, GPIOs, clocks) to be enabled before the + * device can actually be detected on the PCI bus. + * + * The idea is to reuse the platform bus to populate OF nodes describing the + * PCI device and its resources, let these platform devices probe and enable + * relevant resources and then trigger a rescan of the PCI bus allowing for the + * same device (with a second associated struct device) to be registered with + * the PCI subsystem. + * + * To preserve a correct hierarchy for PCI power management and device reset, + * we create a device link between the power control platform device (parent) + * and the supplied PCI device (child). + */ + +/** + * struct pci_pwrctl - PCI device power control context. + * @dev - Address of the power controlling device. + * + * An object of this type must be allocated by the PCI power control device and + * passed to the pwrctl subsystem to trigger a bus rescan and setup a device + * link with the device once it's up. + */ +struct pci_pwrctl { + struct device *dev; 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Mon, 25 Mar 2024 06:17:16 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:16 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 13/16] power: sequencing: implement the pwrseq core Date: Mon, 25 Mar 2024 14:16:21 +0100 Message-Id: <20240325131624.26023-14-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Implement the power sequencing subsystem allowing devices to share complex powering-up and down procedures. It's split into the consumer and provider parts but does not implement any new DT bindings so that the actual power sequencing is never revealed in the DT representation. Signed-off-by: Bartosz Golaszewski --- MAINTAINERS | 8 + drivers/power/Kconfig | 1 + drivers/power/Makefile | 1 + drivers/power/sequencing/Kconfig | 12 + drivers/power/sequencing/Makefile | 4 + drivers/power/sequencing/core.c | 1065 +++++++++++++++++++++++++++++ include/linux/pwrseq/consumer.h | 56 ++ include/linux/pwrseq/provider.h | 75 ++ 8 files changed, 1222 insertions(+) create mode 100644 drivers/power/sequencing/Kconfig create mode 100644 drivers/power/sequencing/Makefile create mode 100644 drivers/power/sequencing/core.c create mode 100644 include/linux/pwrseq/consumer.h create mode 100644 include/linux/pwrseq/provider.h diff --git a/MAINTAINERS b/MAINTAINERS index 51d5a64a5a36..37039fa1b721 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17631,6 +17631,14 @@ F: include/linux/pm_* F: include/linux/powercap.h F: kernel/configs/nopm.config +POWER SEQUENCING +M: Bartosz Golaszewski +L: linux-pm@vger.kernel.org +S: Maintained +T: git git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git +F: drivers/power/sequencing/ +F: include/linux/pwrseq/ + POWER STATE COORDINATION INTERFACE (PSCI) M: Mark Rutland M: Lorenzo Pieralisi diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 696bf77a7042..9a8e44ca9ae4 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only source "drivers/power/reset/Kconfig" +source "drivers/power/sequencing/Kconfig" source "drivers/power/supply/Kconfig" diff --git a/drivers/power/Makefile b/drivers/power/Makefile index effbf0377f32..962a2cd30a51 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_POWER_RESET) += reset/ +obj-$(CONFIG_POWER_SEQUENCING) += sequencing/ obj-$(CONFIG_POWER_SUPPLY) += supply/ diff --git a/drivers/power/sequencing/Kconfig b/drivers/power/sequencing/Kconfig new file mode 100644 index 000000000000..ba5732b1dbf8 --- /dev/null +++ b/drivers/power/sequencing/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only + +menuconfig POWER_SEQUENCING + tristate "Power Sequencing support" + help + Say Y here to enable the Power Sequencing subsystem. + + This subsystem is designed to control power to devices that share + complex resources and/or require specific power sequences to be run + during power-up. + + If unsure, say no. diff --git a/drivers/power/sequencing/Makefile b/drivers/power/sequencing/Makefile new file mode 100644 index 000000000000..dcdf8c0c159e --- /dev/null +++ b/drivers/power/sequencing/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_POWER_SEQUENCING) += pwrseq-core.o +pwrseq-core-y := core.o diff --git a/drivers/power/sequencing/core.c b/drivers/power/sequencing/core.c new file mode 100644 index 000000000000..f5f3dc9d2407 --- /dev/null +++ b/drivers/power/sequencing/core.c @@ -0,0 +1,1065 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Power-sequencing framework for linux. + * + * This subsystem allows power sequence providers to register a set of targets + * that consumers may request and power-up/down. + * + * Glossary: + * + * Unit - a unit is a discreet chunk of a power sequence. For instance one unit + * may enable a set of regulators, another may enable a specific GPIO. Units + * can define dependencies in the form of other units that must be enabled + * before it itself can be. + * + * Target - a target is a set of units (composed of the "final" unit and its + * dependencies) that a consumer selects by its name when requesting a handle + * to the power sequencer. Via the dependency system, multiple targets may + * share the same parts of a power sequence but ignore parts that are + * irrelevant. + * + * Descriptor - a handle passed by the pwrseq core to every consumer that + * serves as the entry point to the provider layer. It ensures coherence + * between different users and keeps reference counting consistent. + * + * Each provider must define a .match() callback whose role is to determine + * whether a potential consumer is in fact associated with this sequencer. + * This allows creating abstraction layers on top of regular device-tree + * resources like regulators, clocks and other nodes connected to the consumer + * via phandle. + */ + +static DEFINE_IDA(pwrseq_ida); + +/* + * Protects the device list on the pwrseq bus from concurrent modifications + * but allows simultaneous read-only access. + */ +static DECLARE_RWSEM(pwrseq_sem); + +/** + * struct pwrseq_unit - Private power-sequence unit data. + * @ref: Reference count for this object. When it goes to 0, the object is + * destroyed. + * @name: Name of this target. + * @list: Link to siblings on the list of all units of a single sequencer. + * @deps: List of units on which this unit depends. + * @enable: Callback running the part of the power-on sequence provided by + * this unit. + * @disable: Callback running the part of the power-off sequence provided + * by this unit. + * @enable_count: Current number of users that enabled this unit. May be the + * consumer of the power sequencer or other units that depend + * on this one. + */ +struct pwrseq_unit { + struct kref ref; + const char *name; + struct list_head list; + struct list_head deps; + pwrseq_power_state_func enable; + pwrseq_power_state_func disable; + unsigned int enable_count; +}; + +static struct pwrseq_unit *pwrseq_unit_new(const struct pwrseq_unit_data *data) +{ + struct pwrseq_unit *unit; + + unit = kzalloc(sizeof(*unit), GFP_KERNEL); + if (!unit) + return NULL; + + unit->name = kstrdup_const(data->name, GFP_KERNEL); + if (!unit->name) { + kfree(unit); + return NULL; + } + + kref_init(&unit->ref); + INIT_LIST_HEAD(&unit->deps); + unit->enable = data->enable; + unit->disable = data->disable; + + return unit; +} + +static struct pwrseq_unit *pwrseq_unit_incref(struct pwrseq_unit *unit) +{ + kref_get(&unit->ref); + + return unit; +} + +static void pwrseq_unit_release(struct kref *ref); + +static void pwrseq_unit_decref(struct pwrseq_unit *unit) +{ + kref_put(&unit->ref, pwrseq_unit_release); +} + +/** + * struct pwrseq_unit_dep - Wrapper around a reference to the unit structure + * allowing to keep it on multiple dependency lists + * in different units. + * @list: Siblings on the list. + * @unit: Address of the referenced unit. + */ +struct pwrseq_unit_dep { + struct list_head list; + struct pwrseq_unit *unit; +}; + +static struct pwrseq_unit_dep *pwrseq_unit_dep_new(struct pwrseq_unit *unit) +{ + struct pwrseq_unit_dep *dep; + + dep = kzalloc(sizeof(*dep), GFP_KERNEL); + if (!dep) + return NULL; + + dep->unit = unit; + + return dep; +} + +static void pwrseq_unit_dep_free(struct pwrseq_unit_dep *ref) +{ + pwrseq_unit_decref(ref->unit); + kfree(ref); +} + +static void pwrseq_unit_free_deps(struct list_head *list) +{ + struct pwrseq_unit_dep *dep, *next; + + list_for_each_entry_safe(dep, next, list, list) { + list_del(&dep->list); + pwrseq_unit_dep_free(dep); + } +} + +static void pwrseq_unit_release(struct kref *ref) +{ + struct pwrseq_unit *unit = container_of(ref, struct pwrseq_unit, ref); + + pwrseq_unit_free_deps(&unit->deps); + list_del(&unit->list); + kfree_const(unit->name); + kfree(unit); +} + +/** + * struct pwrseq_target - Private power-sequence target data. + * @list: Siblings on the list of all targets exposed by a power sequencer. + * @name: Name of the target. + * @unit: Final unit for this target. + * @post_enable: Callback run after the target unit has been enabled, *after* + * the state lock has been released. It's useful for implementing + * boot-up delays without blocking other users from powering up + * using the same power sequencer. + */ +struct pwrseq_target { + struct list_head list; + const char *name; + struct pwrseq_unit *unit; + pwrseq_power_state_func post_enable; +}; + +static struct pwrseq_target * +pwrseq_target_new(const struct pwrseq_target_data *data) +{ + struct pwrseq_target *target; + + target = kzalloc(sizeof(*target), GFP_KERNEL); + if (!target) + return NULL; + + target->name = kstrdup_const(data->name, GFP_KERNEL); + if (!target->name) { + kfree(target); + return NULL; + } + + target->post_enable = data->post_enable; + + return target; +} + +static void pwrseq_target_free(struct pwrseq_target *target) +{ + pwrseq_unit_decref(target->unit); + kfree_const(target->name); + kfree(target); +} + +/** + * struct pwrseq_device - Private power sequencing data. + * @dev: Device struct associated with this sequencer. + * @id: Device ID. + * @owner: Prevents removal of active power sequencing providers. + * @rw_lock: Protects the device from being unregistered while in use. + * @state_lock: Prevents multiple users running the power sequence at the same + * time. + * @match: Power sequencer matching callback. + * @targets: List of targets exposed by this sequencer. + * @units: List of all units supported by this sequencer. + */ +struct pwrseq_device { + struct device dev; + int id; + struct module *owner; + struct rw_semaphore rw_lock; + struct mutex state_lock; + pwrseq_match_func match; + struct list_head targets; + struct list_head units; +}; + +static struct pwrseq_device *to_pwrseq_device(struct device *dev) +{ + return container_of(dev, struct pwrseq_device, dev); +} + +static struct pwrseq_device *pwrseq_device_get(struct pwrseq_device *pwrseq) +{ + get_device(&pwrseq->dev); + + return pwrseq; +} + +static void pwrseq_device_put(struct pwrseq_device *pwrseq) +{ + put_device(&pwrseq->dev); +} + +/** + * struct pwrseq_desc - Wraps access to the pwrseq_device and ensures that one + * user cannot break the reference counting for others. + * @pwrseq: Reference to the power sequencing device. + * @target: Reference to the target this descriptor allows to control. + * @powered_on: Power state set by the holder of the descriptor (not necessarily + * corresponding to the actual power state of the device). + */ +struct pwrseq_desc { + struct pwrseq_device *pwrseq; + struct pwrseq_target *target; + bool powered_on; +}; + +static const struct bus_type pwrseq_bus = { + .name = "pwrseq", +}; + +static void pwrseq_release(struct device *dev) +{ + struct pwrseq_device *pwrseq = to_pwrseq_device(dev); + struct pwrseq_target *target; + + list_for_each_entry(target, &pwrseq->targets, list) + pwrseq_target_free(target); + + mutex_destroy(&pwrseq->state_lock); + ida_free(&pwrseq_ida, pwrseq->id); + kfree(pwrseq); +} + +static const struct device_type pwrseq_device_type = { + .name = "power_sequencer", + .release = pwrseq_release, +}; + +static int pwrseq_unit_setup_deps(const struct pwrseq_unit_data **data, + struct list_head *dep_list, + struct list_head *unit_list, + struct radix_tree_root *processed_units) +{ + const struct pwrseq_unit_data *pos; + struct pwrseq_unit_dep *dep; + struct pwrseq_unit *unit; + int ret, i; + + for (i = 0; data[i]; i++) { + pos = data[i]; + + unit = radix_tree_lookup(processed_units, (unsigned long)pos); + if (unit) { + pwrseq_unit_incref(unit); + } else { + unit = pwrseq_unit_new(pos); + if (!unit) + return -ENOMEM; + + if (pos->deps) { + ret = pwrseq_unit_setup_deps(pos->deps, + &unit->deps, + unit_list, + processed_units); + if (ret) { + pwrseq_unit_decref(unit); + return ret; + } + } + + ret = radix_tree_insert(processed_units, + (unsigned long)pos, unit); + if (ret) { + pwrseq_unit_decref(unit); + return ret; + } + + list_add_tail(&unit->list, unit_list); + } + + dep = pwrseq_unit_dep_new(unit); + if (!dep) { + pwrseq_unit_decref(unit); + return -ENOMEM; + } + + list_add_tail(&dep->list, dep_list); + } + + return 0; +} + +static int pwrseq_target_setup_unit(struct pwrseq_target *target, + const struct pwrseq_unit_data *data, + struct list_head *unit_list, + struct radix_tree_root *processed_units) +{ + struct pwrseq_unit *unit; + int ret; + + unit = radix_tree_lookup(processed_units, (unsigned long)data); + if (unit) { + target->unit = pwrseq_unit_incref(unit); + return 0; + } + + unit = pwrseq_unit_new(data); + if (!unit) + return -ENOMEM; + + ret = pwrseq_unit_setup_deps(data->deps, &unit->deps, unit_list, + processed_units); + if (ret) { + pwrseq_unit_decref(unit); + return ret; + } + + ret = radix_tree_insert(processed_units, (unsigned long)data, unit); + if (ret) { + pwrseq_unit_decref(unit); + return ret; + } + + target->unit = unit; + list_add_tail(&unit->list, unit_list); + + return 0; +} + +static int pwrseq_do_setup_targets(const struct pwrseq_target_data **data, + struct pwrseq_device *pwrseq, + struct radix_tree_root *processed_units) +{ + const struct pwrseq_target_data *pos; + struct pwrseq_target *target; + int ret, i; + + for (i = 0; data[i]; i++) { + pos = data[i]; + + target = pwrseq_target_new(pos); + if (!target) + return -ENOMEM; + + ret = pwrseq_target_setup_unit(target, pos->unit, + &pwrseq->units, + processed_units); + if (ret) { + pwrseq_target_free(target); + return ret; + } + + list_add_tail(&target->list, &pwrseq->targets); + } + + return 0; +} + +static int pwrseq_setup_targets(const struct pwrseq_target_data **targets, + struct pwrseq_device *pwrseq) +{ + struct radix_tree_root processed_units; + struct radix_tree_iter iter; + void __rcu **slot; + int ret; + + INIT_RADIX_TREE(&processed_units, GFP_KERNEL); + ret = pwrseq_do_setup_targets(targets, pwrseq, &processed_units); + radix_tree_for_each_slot(slot, &processed_units, &iter, 0) + radix_tree_delete(&processed_units, iter.index); + + return ret; +} + +/** + * pwrseq_device_register() - Register a new power sequencer. + * @config: Configuration of the new power sequencing device. + * + * The config structure is only used during the call and can be freed after + * the function returns. The config structure *must* have the parent device + * as well as the match() callback and at least one target set. + * + * Returns: + * Returns the address of the new pwrseq device or ERR_PTR() on failure. + */ +struct pwrseq_device * +pwrseq_device_register(const struct pwrseq_config *config) +{ + struct pwrseq_device *pwrseq; + int ret; + + if (!config->parent || !config->match || !config->targets || + !config->targets[0]) + return ERR_PTR(-EINVAL); + + pwrseq = kzalloc(sizeof(*pwrseq), GFP_KERNEL); + if (!pwrseq) + return ERR_PTR(-ENOMEM); + + pwrseq->dev.type = &pwrseq_device_type; + pwrseq->dev.bus = &pwrseq_bus; + pwrseq->dev.parent = config->parent; + device_set_node(&pwrseq->dev, dev_fwnode(config->parent)); + dev_set_drvdata(&pwrseq->dev, config->drvdata); + + pwrseq->id = ida_alloc(&pwrseq_ida, GFP_KERNEL); + if (pwrseq->id < 0) { + kfree(pwrseq); + return ERR_PTR(pwrseq->id); + } + + /* + * From this point onwards the device's release() callback is + * responsible for freeing resources. + */ + device_initialize(&pwrseq->dev); + + ret = dev_set_name(&pwrseq->dev, "pwrseq.%d", pwrseq->id); + if (ret) + goto err_put_pwrseq; + + pwrseq->owner = config->owner ?: THIS_MODULE; + pwrseq->match = config->match; + + init_rwsem(&pwrseq->rw_lock); + mutex_init(&pwrseq->state_lock); + INIT_LIST_HEAD(&pwrseq->targets); + INIT_LIST_HEAD(&pwrseq->units); + + ret = pwrseq_setup_targets(config->targets, pwrseq); + if (ret) + goto err_put_pwrseq; + + scoped_guard(rwsem_write, &pwrseq_sem) { + ret = device_add(&pwrseq->dev); + if (ret) + goto err_put_pwrseq; + } + + return pwrseq; + +err_put_pwrseq: + pwrseq_device_put(pwrseq); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(pwrseq_device_register); + +/** + * pwrseq_device_unregister() - Unregister the power sequencer. + * @pwrseq: Power sequencer to unregister. + */ +void pwrseq_device_unregister(struct pwrseq_device *pwrseq) +{ + struct device *dev = &pwrseq->dev; + struct pwrseq_target *target; + + scoped_guard(mutex, &pwrseq->state_lock) { + guard(rwsem_write)(&pwrseq->rw_lock); + + list_for_each_entry(target, &pwrseq->targets, list) + WARN_ONCE(target->unit->enable_count, + "REMOVING POWER SEQUENCER WITH ACTIVE USERS\n"); + + guard(rwsem_write)(&pwrseq_sem); + + device_del(dev); + } + + pwrseq_device_put(pwrseq); +} +EXPORT_SYMBOL_GPL(pwrseq_device_unregister); + +static void devm_pwrseq_device_unregister(void *data) +{ + struct pwrseq_device *pwrseq = data; + + pwrseq_device_unregister(pwrseq); +} + +/** + * devm_pwrseq_device_register() - Managed variant of pwrseq_device_register(). + * @dev: Managing device. + * @config: Configuration of the new power sequencing device. + * + * Returns: + * Returns the address of the new pwrseq device or ERR_PTR() on failure. + */ +struct pwrseq_device * +devm_pwrseq_device_register(struct device *dev, + const struct pwrseq_config *config) +{ + struct pwrseq_device *pwrseq; + int ret; + + pwrseq = pwrseq_device_register(config); + if (IS_ERR(pwrseq)) + return pwrseq; + + ret = devm_add_action_or_reset(dev, devm_pwrseq_device_unregister, + pwrseq); + if (ret) + return ERR_PTR(ret); + + return pwrseq; +} +EXPORT_SYMBOL_GPL(devm_pwrseq_device_register); + +/** + * pwrseq_device_get_drvdata() - Get the driver private data associated with + * this sequencer. + * @pwrseq: Power sequencer object. + * + * Returns: + * Address of the private driver data. + */ +void *pwrseq_device_get_drvdata(struct pwrseq_device *pwrseq) +{ + return dev_get_drvdata(&pwrseq->dev); +} +EXPORT_SYMBOL_GPL(pwrseq_device_get_drvdata); + +struct pwrseq_match_data { + struct pwrseq_desc *desc; + struct device *dev; + const char *target; +}; + +static int pwrseq_match_device(struct device *pwrseq_dev, void *data) +{ + struct pwrseq_device *pwrseq = to_pwrseq_device(pwrseq_dev); + struct pwrseq_match_data *match_data = data; + struct pwrseq_target *target; + int ret; + + guard(rwsem_read)(&pwrseq->rw_lock); + if (!device_is_registered(&pwrseq->dev)) + return 0; + + ret = pwrseq->match(pwrseq, match_data->dev); + if (ret <= 0) + return ret; + + /* We got the matching device, let's find the right target. */ + list_for_each_entry(target, &pwrseq->targets, list) { + if (strcmp(target->name, match_data->target)) + continue; + + match_data->desc->target = target; + } + + /* + * This device does not have this target. No point in deferring as it + * will not get a new target dynamically later. + */ + if (!match_data->desc->target) + return -ENOENT; + + if (!try_module_get(pwrseq->owner)) + return -EPROBE_DEFER; + + match_data->desc->pwrseq = pwrseq_device_get(pwrseq); + + return 1; +} + +/** + * pwrseq_get() - Get the power sequencer associated with this device. + * @dev: Device for which to get the sequencer. + * @target: Name of the target exposed by the sequencer this device wants to + * reach. + * + * Returns: + * New power sequencer descriptor for use by the consumer driver or ERR_PTR() + * on failure. + */ +struct pwrseq_desc *pwrseq_get(struct device *dev, const char *target) +{ + struct pwrseq_match_data match_data; + int ret; + + struct pwrseq_desc *desc __free(kfree) = kzalloc(sizeof(*desc), + GFP_KERNEL); + if (!desc) + return ERR_PTR(-ENOMEM); + + match_data.desc = desc; + match_data.dev = dev; + match_data.target = target; + + guard(rwsem_read)(&pwrseq_sem); + + ret = bus_for_each_dev(&pwrseq_bus, NULL, &match_data, + pwrseq_match_device); + if (ret < 0) + return ERR_PTR(ret); + if (ret == 0) + /* No device matched. */ + return ERR_PTR(-EPROBE_DEFER); + + return no_free_ptr(desc); +} +EXPORT_SYMBOL_GPL(pwrseq_get); + +/** + * pwrseq_put() - Release the power sequencer descriptor. + * @desc: Descriptor to release. + */ +void pwrseq_put(struct pwrseq_desc *desc) +{ + struct pwrseq_device *pwrseq; + + if (!desc) + return; + + pwrseq = desc->pwrseq; + + if (desc->powered_on) + pwrseq_power_off(desc); + + kfree(desc); + module_put(pwrseq->owner); + pwrseq_device_put(pwrseq); +} +EXPORT_SYMBOL_GPL(pwrseq_put); + +static void devm_pwrseq_put(void *data) +{ + struct pwrseq_desc *desc = data; + + pwrseq_put(desc); +} + +/** + * devm_pwrseq_get() - Managed variant of pwrseq_get(). + * @dev: Device for which to get the sequencer and which also manages its + * lifetime. + * @target: Name of the target exposed by the sequencer this device wants to + * reach. + * + * Returns: + * New power sequencer descriptor for use by the consumer driver or ERR_PTR() + * on failure. + */ +struct pwrseq_desc *devm_pwrseq_get(struct device *dev, const char *target) +{ + struct pwrseq_desc *desc; + int ret; + + desc = pwrseq_get(dev, target); + if (IS_ERR(desc)) + return desc; + + ret = devm_add_action_or_reset(dev, devm_pwrseq_put, desc); + if (ret) + return ERR_PTR(ret); + + return desc; +} +EXPORT_SYMBOL_GPL(devm_pwrseq_get); + +static int pwrseq_unit_enable(struct pwrseq_device *pwrseq, + struct pwrseq_unit *target); +static int pwrseq_unit_disable(struct pwrseq_device *pwrseq, + struct pwrseq_unit *target); + +static int pwrseq_unit_enable_deps(struct pwrseq_device *pwrseq, + struct list_head *list) +{ + struct pwrseq_unit_dep *pos; + int ret = 0; + + list_for_each_entry(pos, list, list) { + ret = pwrseq_unit_enable(pwrseq, pos->unit); + if (ret) { + list_for_each_entry_continue_reverse(pos, list, list) + pwrseq_unit_disable(pwrseq, pos->unit); + break; + } + } + + return ret; +} + +static int pwrseq_unit_disable_deps(struct pwrseq_device *pwrseq, + struct list_head *list) +{ + struct pwrseq_unit_dep *pos; + int ret = 0; + + list_for_each_entry_reverse(pos, list, list) { + ret = pwrseq_unit_disable(pwrseq, pos->unit); + if (ret) { + list_for_each_entry_continue(pos, list, list) + pwrseq_unit_enable(pwrseq, pos->unit); + break; + } + } + + return ret; +} + +static int pwrseq_unit_enable(struct pwrseq_device *pwrseq, + struct pwrseq_unit *unit) +{ + int ret; + + if (unit->enable_count != 0) { + unit->enable_count++; + return 0; + } + + ret = pwrseq_unit_enable_deps(pwrseq, &unit->deps); + if (ret) { + dev_err(&pwrseq->dev, + "Failed to enable dependencies before power-on for target '%s': %d\n", + unit->name, ret); + return ret; + } + + if (unit->enable) { + ret = unit->enable(pwrseq); + if (ret) { + dev_err(&pwrseq->dev, + "Failed to enable target '%s': %d\n", + unit->name, ret); + pwrseq_unit_disable_deps(pwrseq, &unit->deps); + return ret; + } + } + + unit->enable_count++; + + return 0; +} + +static int pwrseq_unit_disable(struct pwrseq_device *pwrseq, + struct pwrseq_unit *unit) +{ + int ret; + + if (unit->enable_count == 0) { + WARN_ONCE(1, "Unmatched power-off for target '%s'\n", + unit->name); + return -EBUSY; + } + + if (unit->enable_count != 1) { + unit->enable_count--; + return 0; + } + + if (unit->disable) { + ret = unit->disable(pwrseq); + if (ret) { + dev_err(&pwrseq->dev, + "Failed to disable target '%s': %d\n", + unit->name, ret); + return ret; + } + } + + ret = pwrseq_unit_disable_deps(pwrseq, &unit->deps); + if (ret) { + dev_err(&pwrseq->dev, + "Failed to disable dependencies after power-off for target '%s': %d\n", + unit->name, ret); + if (unit->enable) + unit->enable(pwrseq); + return ret; + } + + unit->enable_count--; + + return 0; +} + +/** + * pwrseq_power_on() - Issue a power-on request on behalf of the consumer + * device. + * @desc: Descriptor referencing the power sequencer. + * + * This function tells the power sequencer that the consumer wants to be + * powered-up. The sequencer may already have powered-up the device in which + * case the function returns 0. If the power-up sequence is already in + * progress, the function will block until it's done and return 0. If this is + * the first request, the device will be powered up. + * + * Returns: + * 0 on success, negative error number on failure. + */ +int pwrseq_power_on(struct pwrseq_desc *desc) +{ + struct pwrseq_device *pwrseq; + struct pwrseq_target *target; + struct pwrseq_unit *unit; + int ret; + + might_sleep(); + + if (!desc || desc->powered_on) + return 0; + + pwrseq = desc->pwrseq; + target = desc->target; + unit = target->unit; + + guard(rwsem_read)(&pwrseq->rw_lock); + if (!device_is_registered(&pwrseq->dev)) + return -ENODEV; + + scoped_guard(mutex, &pwrseq->state_lock) { + ret = pwrseq_unit_enable(pwrseq, unit); + if (!ret) + desc->powered_on = true; + } + + if (target->post_enable) { + ret = target->post_enable(pwrseq); + if (ret) { + pwrseq_unit_disable(pwrseq, unit); + desc->powered_on = false; + } + } + + return ret; +} +EXPORT_SYMBOL_GPL(pwrseq_power_on); + +/** + * pwrseq_power_off() - Issue a power-off request on behalf of the consumer + * device. + * @desc: Descriptor referencing the power sequencer. + * + * This undoes the effects of pwrseq_power_on(). It issues a power-off request + * on behalf of the consumer and when the last remaining user does so, the + * power-down sequence will be started. If one is in progress, the function + * will block until it's complete and then return. + * + * Returns: + * 0 on success, negative error number on failure. + */ +int pwrseq_power_off(struct pwrseq_desc *desc) +{ + struct pwrseq_device *pwrseq; + struct pwrseq_unit *unit; + int ret; + + might_sleep(); + + if (!desc || !desc->powered_on) + return 0; + + pwrseq = desc->pwrseq; + unit = desc->target->unit; + + guard(rwsem_read)(&pwrseq->rw_lock); + if (!device_is_registered(&pwrseq->dev)) + return -ENODEV; + + guard(mutex)(&pwrseq->state_lock); + + ret = pwrseq_unit_disable(pwrseq, unit); + if (!ret) + desc->powered_on = false; + + return ret; +} +EXPORT_SYMBOL_GPL(pwrseq_power_off); + +#if IS_ENABLED(CONFIG_DEBUG_FS) + +struct pwrseq_debugfs_count_ctx { + struct device *dev; + loff_t index; +}; + +static int pwrseq_debugfs_seq_count(struct device *dev, void *data) +{ + struct pwrseq_debugfs_count_ctx *ctx = data; + + ctx->dev = dev; + + return ctx->index-- ? 0 : 1; +} + +static void *pwrseq_debugfs_seq_start(struct seq_file *seq, loff_t *pos) +{ + struct pwrseq_debugfs_count_ctx ctx; + + ctx.dev = NULL; + ctx.index = *pos; + + /* + * We're holding the lock for the entire printout so no need to fiddle + * with device reference count. + */ + down_read(&pwrseq_sem); + + bus_for_each_dev(&pwrseq_bus, NULL, &ctx, pwrseq_debugfs_seq_count); + if (!ctx.index) + return NULL; + + return ctx.dev; +} + +static void *pwrseq_debugfs_seq_next(struct seq_file *seq, void *data, + loff_t *pos) +{ + struct device *curr = data; + + ++*pos; + + struct device *next __free(put_device) = + bus_find_next_device(&pwrseq_bus, curr); + return next; +} + +static void pwrseq_debugfs_seq_show_target(struct seq_file *seq, + struct pwrseq_target *target) +{ + seq_printf(seq, " target: [%s] (target unit: [%s])\n", + target->name, target->unit->name); +} + +static void pwrseq_debugfs_seq_show_unit(struct seq_file *seq, + struct pwrseq_unit *unit) +{ + struct pwrseq_unit_dep *ref; + + seq_printf(seq, " unit: [%s] - enable count: %u\n", + unit->name, unit->enable_count); + + if (list_empty(&unit->deps)) + return; + + seq_puts(seq, " dependencies:\n"); + list_for_each_entry(ref, &unit->deps, list) + seq_printf(seq, " [%s]\n", ref->unit->name); +} + +static int pwrseq_debugfs_seq_show(struct seq_file *seq, void *data) +{ + struct device *dev = data; + struct pwrseq_device *pwrseq = to_pwrseq_device(dev); + struct pwrseq_target *target; + struct pwrseq_unit *unit; + + seq_printf(seq, "%s:\n", dev_name(dev)); + + seq_puts(seq, " targets:\n"); + list_for_each_entry(target, &pwrseq->targets, list) + pwrseq_debugfs_seq_show_target(seq, target); + + seq_puts(seq, " units:\n"); + list_for_each_entry(unit, &pwrseq->units, list) + pwrseq_debugfs_seq_show_unit(seq, unit); + + return 0; +} + +static void pwrseq_debugfs_seq_stop(struct seq_file *seq, void *data) +{ + up_read(&pwrseq_sem); +} + +static const struct seq_operations pwrseq_debugfs_sops = { + .start = pwrseq_debugfs_seq_start, + .next = pwrseq_debugfs_seq_next, + .show = pwrseq_debugfs_seq_show, + .stop = pwrseq_debugfs_seq_stop, +}; +DEFINE_SEQ_ATTRIBUTE(pwrseq_debugfs); + +static struct dentry *pwrseq_debugfs_dentry; + +#endif /* CONFIG_DEBUG_FS */ + +static int __init pwrseq_init(void) +{ + int ret; + + ret = bus_register(&pwrseq_bus); + if (ret) { + pr_err("Failed to register the power sequencer bus\n"); + return ret; + } + +#if IS_ENABLED(CONFIG_DEBUG_FS) + pwrseq_debugfs_dentry = debugfs_create_file("pwrseq", 0444, NULL, NULL, + &pwrseq_debugfs_fops); +#endif /* CONFIG_DEBUG_FS */ + + return 0; +} +subsys_initcall(pwrseq_init); + +static void __exit pwrseq_exit(void) +{ +#if IS_ENABLED(CONFIG_DEBUG_FS) + debugfs_remove_recursive(pwrseq_debugfs_dentry); +#endif /* CONFIG_DEBUG_FS */ + + bus_unregister(&pwrseq_bus); +} +module_exit(pwrseq_exit); + +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_DESCRIPTION("Power Sequencing subsystem core"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/pwrseq/consumer.h b/include/linux/pwrseq/consumer.h new file mode 100644 index 000000000000..7d583b4f266e --- /dev/null +++ b/include/linux/pwrseq/consumer.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#ifndef __POWER_SEQUENCING_CONSUMER_H__ +#define __POWER_SEQUENCING_CONSUMER_H__ + +#include + +struct device; +struct pwrseq_desc; + +#if IS_ENABLED(CONFIG_POWER_SEQUENCING) + +struct pwrseq_desc * __must_check +pwrseq_get(struct device *dev, const char *target); +void pwrseq_put(struct pwrseq_desc *desc); + +struct pwrseq_desc * __must_check +devm_pwrseq_get(struct device *dev, const char *target); + +int pwrseq_power_on(struct pwrseq_desc *desc); +int pwrseq_power_off(struct pwrseq_desc *desc); + +#else /* CONFIG_POWER_SEQUENCING */ + +static inline struct pwrseq_desc * __must_check +pwrseq_get(struct device *dev, const char *target) +{ + return ERR_PTR(-ENOSYS); +} + +static inline void pwrseq_put(struct pwrseq_desc *desc) +{ +} + +static inline struct pwrseq_desc * __must_check +devm_pwrseq_get(struct device *dev, const char *target) +{ + return ERR_PTR(-ENOSYS); +} + +static inline int pwrseq_power_on(struct pwrseq_desc *desc) +{ + return -ENOSYS; +} + +static inline int pwrseq_power_off(struct pwrseq_desc *desc) +{ + return -ENOSYS; +} + +#endif /* CONFIG_POWER_SEQUENCING */ + +#endif /* __POWER_SEQUENCING_CONSUMER_H__ */ diff --git a/include/linux/pwrseq/provider.h b/include/linux/pwrseq/provider.h new file mode 100644 index 000000000000..e627ed2f4d91 --- /dev/null +++ b/include/linux/pwrseq/provider.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#ifndef __POWER_SEQUENCING_PROVIDER_H__ +#define __POWER_SEQUENCING_PROVIDER_H__ + +struct device; +struct module; +struct pwrseq_device; + +typedef int (*pwrseq_power_state_func)(struct pwrseq_device *); +typedef int (*pwrseq_match_func)(struct pwrseq_device *, struct device *); + +/** + * struct pwrseq_unit_data - Configuration of a single power sequencing + * unit. + * @name: Name of the unit. + * @deps: Units that must be enabled before this one and disabled after it + * in the order they come in this array. + * @enable: Callback running the part of the power-on sequence provided by + * this unit. + * @disable: Callback running the part of the power-off sequence provided + * by this unit. + */ +struct pwrseq_unit_data { + const char *name; + const struct pwrseq_unit_data **deps; + pwrseq_power_state_func enable; + pwrseq_power_state_func disable; +}; + +/** + * struct pwrseq_target_data - Configuration of a power sequencing target. + * @name: Name of the target. + * @unit: Final unit that this target must reach in order to be considered + * enabled. + * @post_enable: Callback run after the target unit has been enabled, *after* + * the state lock has been released. It's useful for implementing + * boot-up delays without blocking other users from powering up + * using the same power sequencer. + */ +struct pwrseq_target_data { + const char *name; + const struct pwrseq_unit_data *unit; + pwrseq_power_state_func post_enable; +}; + +/** + * struct pwrseq_config - Configuration used for registering a new provider. + * @parent: Parent device for the sequencer. Must be set. + * @owner: Module providing this device. + * @drvdata: Private driver data. + * @match: Provider callback used to match the consumer device to the sequencer. + * @targets: Array of targets for this power sequencer. Must be NULL-terminated. + */ +struct pwrseq_config { + struct device *parent; + struct module *owner; + void *drvdata; + pwrseq_match_func match; + const struct pwrseq_target_data **targets; +}; + +struct pwrseq_device * +pwrseq_device_register(const struct pwrseq_config *config); +void pwrseq_device_unregister(struct pwrseq_device *pwrseq); +struct pwrseq_device * +devm_pwrseq_device_register(struct device *dev, + const struct pwrseq_config *config); + +void *pwrseq_device_get_drvdata(struct pwrseq_device *pwrseq); + +#endif /* __POWER_SEQUENCING_PROVIDER_H__ */ From patchwork Mon Mar 25 13:16:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602170 Received: from mail-lf1-f44.google.com (mail-lf1-f44.google.com [209.85.167.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 49FA8148832 for ; Mon, 25 Mar 2024 13:17:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372645; cv=none; b=NvcD/RCicvXe0GJAawQlvEFQGjYnVCg+BHQYxveBMM8LNhGB3nQxdihjOEV13XIAxAOp8O1VXk86KGwdjpYoxIcMf1KVwzTg64+ucACsLC4qMKHftE5IYCRe3ZfCud9nR4ITdq0VjpbAvA+yTZ6YFnIu40OvUFRq0MgLbKuKCVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711372645; c=relaxed/simple; bh=mT8EtEqSsc1usaT07FcKi55aNWb5O03fQyO7Z6PPFnQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=J6AuMU0TDMCT+njcrsbSqtZUTI+seZiR0FffkppICqece4Qd2saFzQJW2d1XzCdo6kU9NuBVgu7ALYL+8kqN+nWHRtPVjaOlXXuyFgjg4FJoAM4mc789uxW1spnvTTPCDzaYUJbSBNsS/xiBCSRrswSuoS3Ca+trYkB1PIAo9ms= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=t/V+AkyA; arc=none smtp.client-ip=209.85.167.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="t/V+AkyA" Received: by mail-lf1-f44.google.com with SMTP id 2adb3069b0e04-513d3746950so5304439e87.1 for ; Mon, 25 Mar 2024 06:17:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1711372638; x=1711977438; darn=vger.kernel.org; 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=C9nJwjHWSN5VnvThb8/gXwDKA0GcEMuTEtkVY9Mb9jo=; b=t/V+AkyAsWKIHh1UGrvgswH5i2753TMZbmIZQMdTHipkbMJQItcqSs6htI8opJWVl3 O+rPPoAQTNr1OypcXZRi7IEnShbFfUrc7OK3/6HxUq+2bLYJgp/dMNgB38PNM35dxpLt c22+yb7Dw+L5P/7UcFApwQ4mGFSbPF/5hYNtNQKw/2oRsodlUtum0P0tannugYRsgwN8 38fIqB5RpgRa4/bhiE8cExIoQ3ag2ij7wk3v/8Qs56z+bil/1pNzCzGVm3oC+vfeu/kN L5dS7ZgbGIuAp/5TPJbv7MKnE1TuS+n5Aiq+V02tP0LrGOU2v6jKe0nYipWwIXpRlKLv 0gkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711372638; x=1711977438; 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=C9nJwjHWSN5VnvThb8/gXwDKA0GcEMuTEtkVY9Mb9jo=; b=cs0lVedL84hLUARXru1HXPZfToDpWayNiX6JhEWMXYkeMZw10HetmQzivNpE4ZKgyY fdAzdBuC7HQy0a0oRfjjhY6KeGINQyk3ZsFMsU39vEb9ltvl9r47Q7KosenbmbICcP91 WJFe/7hBYNV6dQsPajPynVF0+yseVDXGevnxCRQglajcmPwsNbYE1v2zfPdJQ6tdUE5z u+5z1GVU8vs9A7hU0itMdq2GR1/6y8weqomkhqyMuVMHPdWW/EIcjfX3Qglfo6sJV36n gfaQXMuaBlc376EhzsiKuxsrkQPHpe0hwYMLW7x2478OE6Bfj0SHuhrCaq46P/HpcAzz rQ/A== X-Forwarded-Encrypted: i=1; AJvYcCWrk2z6emypS4kwHBaMdLYZtjQYExu4pp4VYsbvs7MKaLxtR5vqgdbBbXbvEwGeZBvIBx4rWT7f78Pk+1b3KNEPgMIcCY35 X-Gm-Message-State: AOJu0Yxq16ueJTQ0ODFOfkGT015vPQe2UfhXXAg4YK7Di3AEOvm717EN EzmrF8+8LAyyZAa9txVTecQkXy2lEYgadl3IX9/oHWTUZQCJjSQGXsdFvu2hXt4= X-Google-Smtp-Source: AGHT+IE2+eSoT09uhRy315sGD8UVX1+1gdFHiYvCh4DKZquDz+GGRHOB4ohN7DRUEE6RC8yf6HFK6A== X-Received: by 2002:a05:6512:3a8c:b0:515:ab42:c25f with SMTP id q12-20020a0565123a8c00b00515ab42c25fmr2786468lfu.23.1711372638058; Mon, 25 Mar 2024 06:17:18 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:17 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 14/16] power: pwrseq: add a driver for the PMU module on the QCom WCN chipsets Date: Mon, 25 Mar 2024 14:16:22 +0100 Message-Id: <20240325131624.26023-15-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski This adds the power sequencing driver for the PMU modules present on the Qualcomm WCN Bluetooth and Wifi chipsets. It uses the pwrseq subsystem and knows how to match the sequencer to the consumer device by verifying the relevant properties and DT layout. Signed-off-by: Bartosz Golaszewski --- drivers/power/sequencing/Kconfig | 16 + drivers/power/sequencing/Makefile | 2 + drivers/power/sequencing/pwrseq-qcom-wcn.c | 336 +++++++++++++++++++++ 3 files changed, 354 insertions(+) create mode 100644 drivers/power/sequencing/pwrseq-qcom-wcn.c diff --git a/drivers/power/sequencing/Kconfig b/drivers/power/sequencing/Kconfig index ba5732b1dbf8..468d58fac07d 100644 --- a/drivers/power/sequencing/Kconfig +++ b/drivers/power/sequencing/Kconfig @@ -10,3 +10,19 @@ menuconfig POWER_SEQUENCING during power-up. If unsure, say no. + +if POWER_SEQUENCING + +config POWER_SEQUENCING_QCOM_WCN + tristate "Qualcomm WCN family PMU driver" + default m if ARCH_QCOM + help + Say U here to enable the power sequencing driver for Qualcomm + WCN Bluetooth/WLAN chipsets. + + Typically, a package from the Qualcomm WCN family contains the BT + and WLAN modules whose power is controlled by the PMU module. As the + former two share the power-up sequence which is executed by the PMU, + this driver is needed for correct power control. + +endif diff --git a/drivers/power/sequencing/Makefile b/drivers/power/sequencing/Makefile index dcdf8c0c159e..2eec2df7912d 100644 --- a/drivers/power/sequencing/Makefile +++ b/drivers/power/sequencing/Makefile @@ -2,3 +2,5 @@ obj-$(CONFIG_POWER_SEQUENCING) += pwrseq-core.o pwrseq-core-y := core.o + +obj-$(CONFIG_POWER_SEQUENCING_QCOM_WCN) += pwrseq-qcom-wcn.o diff --git a/drivers/power/sequencing/pwrseq-qcom-wcn.c b/drivers/power/sequencing/pwrseq-qcom-wcn.c new file mode 100644 index 000000000000..380305227b3f --- /dev/null +++ b/drivers/power/sequencing/pwrseq-qcom-wcn.c @@ -0,0 +1,336 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct pwrseq_qcom_wcn_pdata { + const char *const *vregs; + size_t num_vregs; + unsigned int pwup_delay_msec; + unsigned int gpio_enable_delay; +}; + +struct pwrseq_qcom_wcn_ctx { + struct pwrseq_device *pwrseq; + struct device_node *of_node; + const struct pwrseq_qcom_wcn_pdata *pdata; + struct regulator_bulk_data *regs; + struct gpio_desc *bt_gpio; + struct gpio_desc *wlan_gpio; + struct clk *clk; + unsigned long last_gpio_enable; +}; + +static void pwrseq_qcom_wcn_ensure_gpio_delay(struct pwrseq_qcom_wcn_ctx *ctx) +{ + unsigned long diff_jiffies; + unsigned int diff_msecs; + + if (!ctx->pdata->gpio_enable_delay) + return; + + diff_jiffies = jiffies - ctx->last_gpio_enable; + diff_msecs = jiffies_to_msecs(diff_jiffies); + + if (diff_msecs < ctx->pdata->gpio_enable_delay) + msleep(ctx->pdata->gpio_enable_delay - diff_msecs); +} + +static int pwrseq_qcom_wcn_vregs_enable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + return regulator_bulk_enable(ctx->pdata->num_vregs, ctx->regs); +} + +static int pwrseq_qcom_wcn_vregs_disable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + return regulator_bulk_disable(ctx->pdata->num_vregs, ctx->regs); +} + +static const struct pwrseq_unit_data pwrseq_qcom_wcn_vregs_unit_data = { + .name = "regulators-enable", + .enable = pwrseq_qcom_wcn_vregs_enable, + .disable = pwrseq_qcom_wcn_vregs_disable, +}; + +static int pwrseq_qcom_wcn_clk_enable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + return clk_prepare_enable(ctx->clk); +} + +static int pwrseq_qcom_wcn_clk_disable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + clk_disable_unprepare(ctx->clk); + + return 0; +} + +static const struct pwrseq_unit_data pwrseq_qcom_wcn_clk_unit_data = { + .name = "clock-enable", + .enable = pwrseq_qcom_wcn_clk_enable, + .disable = pwrseq_qcom_wcn_clk_disable, +}; + +static const struct pwrseq_unit_data *pwrseq_qcom_wcn_unit_deps[] = { + &pwrseq_qcom_wcn_vregs_unit_data, + &pwrseq_qcom_wcn_clk_unit_data, + NULL +}; + +static int pwrseq_qcom_wcn_bt_enable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + pwrseq_qcom_wcn_ensure_gpio_delay(ctx); + gpiod_set_value_cansleep(ctx->bt_gpio, 1); + ctx->last_gpio_enable = jiffies; + + return 0; +} + +static int pwrseq_qcom_wcn_bt_disable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + gpiod_set_value_cansleep(ctx->bt_gpio, 0); + + return 0; +} + +static const struct pwrseq_unit_data pwrseq_qcom_wcn_bt_unit_data = { + .name = "bluetooth-enable", + .deps = pwrseq_qcom_wcn_unit_deps, + .enable = pwrseq_qcom_wcn_bt_enable, + .disable = pwrseq_qcom_wcn_bt_disable, +}; + +static int pwrseq_qcom_wcn_wlan_enable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + pwrseq_qcom_wcn_ensure_gpio_delay(ctx); + gpiod_set_value_cansleep(ctx->wlan_gpio, 1); + ctx->last_gpio_enable = jiffies; + + return 0; +} + +static int pwrseq_qcom_wcn_wlan_disable(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + gpiod_set_value_cansleep(ctx->wlan_gpio, 0); + + return 0; +} + +static const struct pwrseq_unit_data pwrseq_qcom_wcn_wlan_unit_data = { + .name = "wlan-enable", + .deps = pwrseq_qcom_wcn_unit_deps, + .enable = pwrseq_qcom_wcn_wlan_enable, + .disable = pwrseq_qcom_wcn_wlan_disable, +}; + +static int pwrseq_qcom_wcn_pwup_delay(struct pwrseq_device *pwrseq) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + + if (ctx->pdata->pwup_delay_msec) + msleep(ctx->pdata->pwup_delay_msec); + + return 0; +} + +static const struct pwrseq_target_data pwrseq_qcom_wcn_bt_target_data = { + .name = "bluetooth", + .unit = &pwrseq_qcom_wcn_bt_unit_data, + .post_enable = pwrseq_qcom_wcn_pwup_delay, +}; + +static const struct pwrseq_target_data pwrseq_qcom_wcn_wlan_target_data = { + .name = "wlan", + .unit = &pwrseq_qcom_wcn_wlan_unit_data, + .post_enable = pwrseq_qcom_wcn_pwup_delay, +}; + +static const struct pwrseq_target_data *pwrseq_qcom_wcn_targets[] = { + &pwrseq_qcom_wcn_bt_target_data, + &pwrseq_qcom_wcn_wlan_target_data, + NULL +}; + +static const char *const pwrseq_qca6390_vregs[] = { + "vddio", + "vddaon", + "vddpmu", + "vddrfa0p95", + "vddrfa1p3", + "vddrfa1p9", + "vddpcie1p3", + "vddpcie1p9", +}; + +static const struct pwrseq_qcom_wcn_pdata pwrseq_qca6390_of_data = { + .vregs = pwrseq_qca6390_vregs, + .num_vregs = ARRAY_SIZE(pwrseq_qca6390_vregs), + .pwup_delay_msec = 60, + .gpio_enable_delay = 100, +}; + +static const char *const pwrseq_wcn7850_vregs[] = { + "vdd", + "vddio", + "vddio1p2", + "vddaon", + "vdddig", + "vddrfa1p2", + "vddrfa1p8", +}; + +static const struct pwrseq_qcom_wcn_pdata pwrseq_wcn7850_of_data = { + .vregs = pwrseq_wcn7850_vregs, + .num_vregs = ARRAY_SIZE(pwrseq_wcn7850_vregs), + .pwup_delay_msec = 50, +}; + +static int pwrseq_qcom_wcn_match(struct pwrseq_device *pwrseq, + struct device *dev) +{ + struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq); + struct device_node *dev_node = dev->of_node; + + /* + * The PMU supplies power to the Bluetooth and WLAN modules. both + * consume the PMU AON output so check the presence of the + * 'vddaon-supply' property and whether it leads us to the right + * device. + */ + if (!of_property_present(dev_node, "vddaon-supply")) + return 0; + + struct device_node *reg_node __free(device_node) = + of_parse_phandle(dev_node, "vddaon-supply", 0); + if (!reg_node) + return 0; + + /* + * `reg_node` is the PMU AON regulator, its parent is the `regulators` + * node and finally its grandparent is the PMU device node that we're + * looking for. + */ + if (!reg_node->parent || !reg_node->parent->parent || + reg_node->parent->parent != ctx->of_node) + return 0; + + return 1; +} + +static int pwrseq_qcom_wcn_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct pwrseq_qcom_wcn_ctx *ctx; + struct pwrseq_config config; + int i, ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->of_node = dev->of_node; + + ctx->pdata = of_device_get_match_data(dev); + if (!ctx->pdata) + return dev_err_probe(dev, -ENODEV, + "Failed to obtain platform data\n"); + + ctx->regs = devm_kcalloc(dev, ctx->pdata->num_vregs, + sizeof(*ctx->regs), GFP_KERNEL); + if (!ctx->regs) + return -ENOMEM; + + for (i = 0; i < ctx->pdata->num_vregs; i++) + ctx->regs[i].supply = ctx->pdata->vregs[i]; + + ret = devm_regulator_bulk_get(dev, ctx->pdata->num_vregs, ctx->regs); + if (ret < 0) + return dev_err_probe(dev, PTR_ERR(ctx->regs), + "Failed to get all regulators\n"); + + ctx->bt_gpio = devm_gpiod_get_optional(dev, "bt-enable", GPIOD_OUT_LOW); + if (IS_ERR(ctx->bt_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->bt_gpio), + "Failed to get the Bluetooth enable GPIO\n"); + + ctx->wlan_gpio = devm_gpiod_get_optional(dev, "wlan-enable", + GPIOD_OUT_LOW); + if (IS_ERR(ctx->wlan_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->wlan_gpio), + "Failed to get the WLAN enable GPIO\n"); + + ctx->clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(ctx->clk)) + return dev_err_probe(dev, PTR_ERR(ctx->clk), + "Failed to get the reference clock\n"); + + memset(&config, 0, sizeof(config)); + + config.parent = dev; + config.owner = THIS_MODULE; + config.drvdata = ctx; + config.match = pwrseq_qcom_wcn_match; + config.targets = pwrseq_qcom_wcn_targets; + + ctx->pwrseq = devm_pwrseq_device_register(dev, &config); + if (IS_ERR(ctx->pwrseq)) + return dev_err_probe(dev, PTR_ERR(ctx->pwrseq), + "Failed to register the power sequencer\n"); + + return 0; +} + +static const struct of_device_id pwrseq_qcom_wcn_of_match[] = { + { + .compatible = "qcom,qca6390-pmu", + .data = &pwrseq_qca6390_of_data, + }, + { + .compatible = "qcom,wcn7850-pmu", + .data = &pwrseq_wcn7850_of_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, pwrseq_qcom_wcn_of_match); + +static struct platform_driver pwrseq_qcom_wcn_driver = { + .driver = { + .name = "pwrseq-qcom_wcn", + .of_match_table = pwrseq_qcom_wcn_of_match, + }, + .probe = pwrseq_qcom_wcn_probe, +}; +module_platform_driver(pwrseq_qcom_wcn_driver); + +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_DESCRIPTION("Qualcomm WCN PMU power sequencing driver"); +MODULE_LICENSE("GPL"); From patchwork Mon Mar 25 13:16:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13602171 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42268157A75 for ; 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Mon, 25 Mar 2024 06:17:19 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:75a:e000:861d:8b72:a859:4ce9]) by smtp.gmail.com with ESMTPSA id p11-20020a056000018b00b0033e75e5f280sm9485245wrx.113.2024.03.25.06.17.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:17:19 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 15/16] Bluetooth: qca: use the power sequencer for QCA6390 Date: Mon, 25 Mar 2024 14:16:23 +0100 Message-Id: <20240325131624.26023-16-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Use the pwrseq subsystem's consumer API to run the power-up sequence for the Bluetooth module of the QCA6390 package. Signed-off-by: Bartosz Golaszewski --- drivers/bluetooth/hci_qca.c | 74 +++++++++++++++++++++++++++++-------- 1 file changed, 59 insertions(+), 15 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 8a60ad7acd70..d31dcea650c1 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -215,6 +216,7 @@ struct qca_power { struct regulator_bulk_data *vreg_bulk; int num_vregs; bool vregs_on; + struct pwrseq_desc *pwrseq; }; struct qca_serdev { @@ -1682,6 +1684,27 @@ static bool qca_wakeup(struct hci_dev *hdev) return wakeup; } +static int qca_port_reopen(struct hci_uart *hu) +{ + int ret; + + /* Now the device is in ready state to communicate with host. + * To sync host with device we need to reopen port. + * Without this, we will have RTS and CTS synchronization + * issues. + */ + serdev_device_close(hu->serdev); + ret = serdev_device_open(hu->serdev); + if (ret) { + bt_dev_err(hu->hdev, "failed to open port"); + return ret; + } + + hci_uart_set_flow_control(hu, false); + + return 0; +} + static int qca_regulator_init(struct hci_uart *hu) { enum qca_btsoc_type soc_type = qca_soc_type(hu); @@ -1750,21 +1773,7 @@ static int qca_regulator_init(struct hci_uart *hu) break; } - /* Now the device is in ready state to communicate with host. - * To sync host with device we need to reopen port. - * Without this, we will have RTS and CTS synchronization - * issues. - */ - serdev_device_close(hu->serdev); - ret = serdev_device_open(hu->serdev); - if (ret) { - bt_dev_err(hu->hdev, "failed to open port"); - return ret; - } - - hci_uart_set_flow_control(hu, false); - - return 0; + return qca_port_reopen(hu); } static int qca_power_on(struct hci_dev *hdev) @@ -1792,6 +1801,17 @@ static int qca_power_on(struct hci_dev *hdev) ret = qca_regulator_init(hu); break; + case QCA_QCA6390: + qcadev = serdev_device_get_drvdata(hu->serdev); + ret = pwrseq_power_on(qcadev->bt_power->pwrseq); + if (ret) + return ret; + + ret = qca_port_reopen(hu); + if (ret) + return ret; + break; + default: qcadev = serdev_device_get_drvdata(hu->serdev); if (qcadev->bt_en) { @@ -2170,6 +2190,10 @@ static void qca_power_shutdown(struct hci_uart *hu) } break; + case QCA_QCA6390: + pwrseq_power_off(qcadev->bt_power->pwrseq); + break; + default: gpiod_set_value_cansleep(qcadev->bt_en, 0); } @@ -2308,12 +2332,25 @@ static int qca_serdev_probe(struct serdev_device *serdev) case QCA_WCN6750: case QCA_WCN6855: case QCA_WCN7850: + case QCA_QCA6390: qcadev->bt_power = devm_kzalloc(&serdev->dev, sizeof(struct qca_power), GFP_KERNEL); if (!qcadev->bt_power) return -ENOMEM; + break; + default: + break; + } + switch (qcadev->btsoc_type) { + case QCA_WCN3988: + case QCA_WCN3990: + case QCA_WCN3991: + case QCA_WCN3998: + case QCA_WCN6750: + case QCA_WCN6855: + case QCA_WCN7850: qcadev->bt_power->dev = &serdev->dev; err = qca_init_regulators(qcadev->bt_power, data->vregs, data->num_vregs); @@ -2354,6 +2391,13 @@ static int qca_serdev_probe(struct serdev_device *serdev) } break; 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Mon, 25 Mar 2024 06:17:20 -0700 (PDT) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 16/16] PCI/pwrctl: add a PCI power control driver for power sequenced devices Date: Mon, 25 Mar 2024 14:16:24 +0100 Message-Id: <20240325131624.26023-17-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl> References: <20240325131624.26023-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Add a PCI power control driver that's capable of correctly powering up devices using the power sequencing subsystem. The first user of this driver is the ath11k module on QCA6390. Signed-off-by: Bartosz Golaszewski --- drivers/pci/pwrctl/Kconfig | 9 +++ drivers/pci/pwrctl/Makefile | 2 + drivers/pci/pwrctl/pci-pwrctl-pwrseq.c | 89 ++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) create mode 100644 drivers/pci/pwrctl/pci-pwrctl-pwrseq.c diff --git a/drivers/pci/pwrctl/Kconfig b/drivers/pci/pwrctl/Kconfig index 96195395af69..eb126225eb9f 100644 --- a/drivers/pci/pwrctl/Kconfig +++ b/drivers/pci/pwrctl/Kconfig @@ -5,4 +5,13 @@ menu "PCI Power control drivers" config PCI_PWRCTL tristate +config PCI_PWRCTL_PWRSEQ + tristate "PCI Power Control driver using the Power Sequencing subsystem" + select POWER_SEQUENCING + select PCI_PWRCTL + default m if (ATH11K_PCI && ARCH_QCOM) + help + Enable support for the PCI power control driver for device + drivers using the Power Sequencing subsystem. + endmenu diff --git a/drivers/pci/pwrctl/Makefile b/drivers/pci/pwrctl/Makefile index 52ae0640ef7b..d308aae4800c 100644 --- a/drivers/pci/pwrctl/Makefile +++ b/drivers/pci/pwrctl/Makefile @@ -2,3 +2,5 @@ obj-$(CONFIG_PCI_PWRCTL) += pci-pwrctl-core.o pci-pwrctl-core-y := core.o + +obj-$(CONFIG_PCI_PWRCTL_PWRSEQ) += pci-pwrctl-pwrseq.o diff --git a/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c b/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c new file mode 100644 index 000000000000..c7a113a76c0c --- /dev/null +++ b/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct pci_pwrctl_pwrseq_data { + struct pci_pwrctl ctx; + struct pwrseq_desc *pwrseq; +}; + +static void devm_pci_pwrctl_pwrseq_power_off(void *data) +{ + struct pwrseq_desc *pwrseq = data; + + pwrseq_power_off(pwrseq); +} + +static int pci_pwrctl_pwrseq_probe(struct platform_device *pdev) +{ + struct pci_pwrctl_pwrseq_data *data; + struct device *dev = &pdev->dev; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->pwrseq = devm_pwrseq_get(dev, of_device_get_match_data(dev)); + if (IS_ERR(data->pwrseq)) + return dev_err_probe(dev, PTR_ERR(data->pwrseq), + "Failed to get the power sequencer\n"); + + ret = pwrseq_power_on(data->pwrseq); + if (ret) + return dev_err_probe(dev, ret, + "Failed to power-on the device\n"); + + ret = devm_add_action_or_reset(dev, devm_pci_pwrctl_pwrseq_power_off, + data->pwrseq); + if (ret) + return ret; + + data->ctx.dev = dev; + + ret = devm_pci_pwrctl_device_set_ready(dev, &data->ctx); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register the pwrctl wrapper\n"); + + return 0; +} + +static const struct of_device_id pci_pwrctl_pwrseq_of_match[] = { + { + /* ATH11K in QCA6390 package. */ + .compatible = "pci17cb,1101", + .data = "wlan", + }, + { + /* ATH12K in WCN7850 package. */ + .compatible = "pci17cb,1107", + .data = "wlan", + }, + { } +}; +MODULE_DEVICE_TABLE(of, pci_pwrctl_pwrseq_of_match); + +static struct platform_driver pci_pwrctl_pwrseq_driver = { + .driver = { + .name = "pci-pwrctl-pwrseq", + .of_match_table = pci_pwrctl_pwrseq_of_match, + }, + .probe = pci_pwrctl_pwrseq_probe, +}; +module_platform_driver(pci_pwrctl_pwrseq_driver); + +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_DESCRIPTION("Generic PCI Power Control module for power sequenced devices"); +MODULE_LICENSE("GPL");