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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 1/9] arm64: dts: qcom: sm8250: describe the PCIe port Date: Thu, 4 Jan 2024 14:01:15 +0100 Message-Id: <20240104130123.37115-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165080409376604 X-GMAIL-MSGID: 1787165080409376604 From: Bartosz Golaszewski Improve the description of the PCIe topology by defining the port node at the SoC level. Signed-off-by: Bartosz Golaszewski --- arch/arm64/boot/dts/qcom/sm8250.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi index 760501c1301a..fef9c314ce55 100644 --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi @@ -2197,6 +2197,16 @@ pcie0: pcie@1c00000 { 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 Thu Jan 4 13:01:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184988 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5595798dyb; Thu, 4 Jan 2024 05:04:12 -0800 (PST) X-Google-Smtp-Source: AGHT+IEuEyr7VmLflfig6OvIzI0+DwvljYgYYjsgkO2wq0gtcrSkCjkFBoeyG34Bo4HyIaWo+iMp X-Received: by 2002:a50:d71b:0:b0:555:3252:9770 with SMTP id t27-20020a50d71b000000b0055532529770mr205685edi.33.1704373452280; Thu, 04 Jan 2024 05:04:12 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373452; cv=none; d=google.com; s=arc-20160816; b=E7lSS33r7olgLnu6Q209S3KG/YsI2+as9TAwF9cGaF1uGT1EhY56DM4br3PrCyWQxK ISOMY1kTmt+QOWbJdOfBjOYi4Qc3evDoiUGRLE8IMnz+NNxbRIlwShpE560Oc/lESnCO 1y/DtKGbw02oxPGpq3jlVYq7erI4FT0SOjKEl1AXml3T0sJjY7TzqGxUgZzdLI87fUIU ttpSCun4UucpEDAGmCGNeSzX+/YzmZSG/ykvOzWeLcC6on1Uh2Wfc0eipq+r2qhvE/Hb 1aWpxCnTLUwjHPqI6l+aW/A1OTjILM48ovYKy1ArHYIk8AWV6YBbSXJh5WvMJRN6Kzgo HpdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=ef54oPQshoe7Gm//fznSEK5vgc/1PN5IaLbwIyajU/k=; fh=1uFngekeZT2FVGQaKpK4gjTIex4FU0hdfexTfOUKej8=; b=ZwPu4k2iUYmMq8FE6OfHZWwZ9sbYI7uffpaI7+2IXocMrpWS99zQxWLRvOQXqnXkQ5 RJxLeeGJhXBXZogVjBVD7kLhF/VioPLyMHEZpEs+q921BpAa1extYoulxDpptjr5ixcu unEhN0FsyfGowaqYtvkKtsu7IOo2kd96uXU597NzxBYJfgmL9Zw8GHEszV3P8T06oOaC ZW/MwLGRHOSXh0dcv7h22LssQ2NKGw6jkPZgczjDri5Bp9KcU/yZsXSJZ08Rt94Gv0LG sYq6WBJV48dHypdSHDS98ccyuP6G4M2GtAshH3JySyg6OKGMpjUh0gdk71jVyXo8rG6M tNJA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=LwzpOVgJ; spf=pass (google.com: domain of linux-kernel+bounces-16676-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-16676-ouuuleilei=gmail.com@vger.kernel.org" Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 2/9] arm64: dts: qcom: qrb5165-rb5: describe the WLAN module of QCA6390 Date: Thu, 4 Jan 2024 14:01:16 +0100 Message-Id: <20240104130123.37115-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165096916435414 X-GMAIL-MSGID: 1787165096916435414 From: Bartosz Golaszewski Describe the ath11k WLAN on-board the QCA6390 module. Include the relevant regulators and the enable GPIO. Signed-off-by: Bartosz Golaszewski --- arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts index cd0db4f31d4a..721f86af952b 100644 --- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts +++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts @@ -734,6 +734,22 @@ &pcie0_phy { vdda-pll-supply = <&vreg_l9a_1p2>; }; +&pcieport0 { + wifi@0 { + compatible = "pci17cb,1101"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + pinctrl-names = "default"; + pinctrl-0 = <&wlan_en_state>; + + enable-gpios = <&tlmm 20 GPIO_ACTIVE_HIGH>; + + vddpmu-supply = <&vreg_s2f_0p95>; + vddpcie1-supply = <&vreg_s8c_1p3>; + vddpcie2-supply = <&vreg_s5a_1p9>; + }; +}; + &pcie1 { status = "okay"; }; @@ -1303,6 +1319,14 @@ 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 { From patchwork Thu Jan 4 13:01:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184989 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5596179dyb; Thu, 4 Jan 2024 05:04:42 -0800 (PST) X-Google-Smtp-Source: AGHT+IHop3KLbghWvOWdkj/fa+2pqhnRXpsad/PL7MqSFgI7OnhQ4743fNwdnqZNnx62z+FbMVyu X-Received: by 2002:a17:906:d0db:b0:9e3:fbab:e091 with SMTP id bq27-20020a170906d0db00b009e3fbabe091mr283729ejb.15.1704373482311; Thu, 04 Jan 2024 05:04:42 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373482; cv=none; d=google.com; s=arc-20160816; b=DhHCrKnCWtOSR5N1P69xEnHzRFmcFvCsVX6MpeD8T3q9L8IZdVGpt5C7X6IcpbA9Xd pdI7s7GejrTrLlbo8782noMK1itZaiCyMhGoD+wHunslaRooomHXZG5OWkdmlhcZf7ww rC9d4A6hi7vRPQzmJ6zP9T/vy0sVB+ly6Q9ZwEsGo6QDoBUkWZyz2YgcgHj19hNNQ48d qCzGE0CJc2ZOHi0leoGkAO0Fr3eMilwbFh3IMvjug0aH+dAj9sPDtNMe5VAKbp9pwQ26 IVqKsTNZJe+gEVV9UTAhSTMox/TmPLyJGP7ZdSqmiiFWWOxsUNkKzXRnsf53Oa7WUDrq vgng== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=dm8mMOJsxux6ZmWUG3F7cuu+H2vgOte3WZWDy9og3kI=; fh=1uFngekeZT2FVGQaKpK4gjTIex4FU0hdfexTfOUKej8=; b=Z3i1WKvtOuJTpaoA6GYGknOCyqfpQFpyGDJyQqi3RTPPKWidJ9jXzw26kD9vhG+kJr +HC5IKZrEn/mn8AkQW2J5MrvJh7Kqa5Gaz8tuxGSamaJQdUSwVG9fP37BURePhl7Kr0T F7db6pckca5wrao4HBmkxCBal+spSqkIusRv/otJEmuNRYxujyzQwJx1MWW0AwlGcQ/0 34ijqkRXeNl8g4bSSWoVLpd63zRZ6fTQKA8bW7OCE+hyngfqGGrZ30sHIuO5g/7Vzp5c U3wZPo5yR2sFQO+4EkNkMyb+Mdg6h8TmRxJ/Ol51xBgdmY1FPPzpaxo+EfPVh281vHba 3HUg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=zESwugOz; spf=pass (google.com: domain of linux-kernel+bounces-16677-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-16677-ouuuleilei=gmail.com@vger.kernel.org" Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 3/9] PCI/portdrv: create platform devices for child OF nodes Date: Thu, 4 Jan 2024 14:01:17 +0100 Message-Id: <20240104130123.37115-4-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165128487790953 X-GMAIL-MSGID: 1787165128487790953 From: Bartosz Golaszewski In order to introduce PCIe power-sequencing, we need to create platform devices for child nodes of the port driver node. They will get matched against the pwrseq drivers (if one exists) and then the actuak PCIe device will reuse the node once it's detected on the bus. Signed-off-by: Bartosz Golaszewski --- drivers/pci/pcie/portdrv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index 14a4b89a3b83..401fb731009d 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -715,7 +716,7 @@ static int pcie_portdrv_probe(struct pci_dev *dev, pm_runtime_allow(&dev->dev); } - return 0; + return devm_of_platform_populate(&dev->dev); } static void pcie_portdrv_remove(struct pci_dev *dev) From patchwork Thu Jan 4 13:01:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184990 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5596531dyb; Thu, 4 Jan 2024 05:05:13 -0800 (PST) X-Google-Smtp-Source: AGHT+IGVDuGp0MQ2JyOCB+4Vo8YAq1HMm+89roZ61UCHO6AtwV4S0FWUW53zq/v9v+o3zcE/oeIn X-Received: by 2002:a05:6808:3388:b0:3bb:c76f:f82a with SMTP id ce8-20020a056808338800b003bbc76ff82amr509726oib.64.1704373513215; Thu, 04 Jan 2024 05:05:13 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373513; cv=none; d=google.com; s=arc-20160816; b=San3iqfEDPuzKUn9oUB5x2LGgrQe10oJjQaTbPySPF1AhAuY0xczqmRTUZBCOW9N1Z J2RFSZ8PHm+tlTESRAd9mz2SUthNPjb7CKDoDuRHk3uWQZXn2WP4mOfA9XO9OFAlH6hC 1PQGiCuTBqwj95Rylm7rkEvvxMsAvk1augTybI4G2RIJsGA1KIxrUXW+44XqDB4J5qkq dBvK1N81TeVovbU0BCGI69eVjr3X0qWFjyH+l8+qhunw1JRBQcP2S8FQJboLrdHMB+F2 AC17PE/VVXKlD2R36NMa3PYTrxcUOrv7qCDzk7QzafTiZl2fgjwhihQg5omPANYpW84B MPYw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=ko9AldsNAGIySQ6r8IsXSCtLQ9r/1ys0AWCrWCqKA/w=; fh=1uFngekeZT2FVGQaKpK4gjTIex4FU0hdfexTfOUKej8=; b=fWC82vXCH2MlTMz2bUUYRSQmm/3OaHr/ymn/5iuR6bQdz3LficcNWA6kdh2OSS1j+B i49x043wniAax6j5sE4/fBWBc3KcRFdQAaLIa2BbggT89/4mhNQoWGcTMTBGuDOE7pXM Ko+O1zKKfJUB8Zc+b2/VUxoPVJ2sSzWdw8C8dKVDyAw88BnlOjGe3jG/HEOWtOkrABcW m78GDxha6g4KLUv7Bsnw4rDJSUKriC+ajD8GnZLAgJPr1MA5j64U71tqCXkPxJxOE91h gIBAti/a3fm0Lxollf4Nd24oeIbrxz1dcaDQFUYWM4WXfzP9tAnGAgWx6/V5MG+AGQs0 rltQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=qDAKAE9T; spf=pass (google.com: domain of linux-kernel+bounces-16678-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-16678-ouuuleilei=gmail.com@vger.kernel.org" Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 4/9] PCI: hold the rescan mutex when scanning for the first time Date: Thu, 4 Jan 2024 14:01:18 +0100 Message-Id: <20240104130123.37115-5-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165160941455276 X-GMAIL-MSGID: 1787165160941455276 From: Bartosz Golaszewski With the introduction of the power sequencing drivers that will be able to trigger the port rescan, 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 b7335be56008..957f7afee7ba 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3122,7 +3122,9 @@ 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 Thu Jan 4 13:01:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184991 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5596784dyb; Thu, 4 Jan 2024 05:05:33 -0800 (PST) X-Google-Smtp-Source: AGHT+IFFjwTopDoeCAkyi23DpsMSfT9yd0dVBwtJ9Q2R06rc2+aKv2VgjyWHy/KYVlostpdGAiNY X-Received: by 2002:a17:902:d50e:b0:1d4:3af0:865d with SMTP id b14-20020a170902d50e00b001d43af0865dmr477668plg.28.1704373533488; Thu, 04 Jan 2024 05:05:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373533; cv=none; d=google.com; s=arc-20160816; b=Lutrynnx24oQ8QJLzrHN4gEiS8/6zOfFMKMPB8hjvQWUsPt6qIPU8eJa/qSWkRL2Xn CfofnC9goKF/w8HmeQaWTlz9JgWCT67+2YRRjj9x7QjFqItql9KS8xNnWk39iC9GHeYs qy6bu4ut5SI0PvLEYBmDFt2Rps3VusNv4jBfZZDILdtzZtR9NmcG9iSr7oI39naa74Sh NEVdlrNWq9iBhO7k8ZHK2zho7L/L0DwZ3AB4w/PVQ6aM/d+SW83UbNnHV4h8L9g5DaFI u1zX/uzMhp/1tLy2uAiL2z8HWR096AtVC0md+h1tzC8KtgDDuHRcEg24Qs1fFD2PW9oR ywJA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=C0/NJ7KYEulil2Xeyr0vkcKQVIe4dXTk2WHu1Aal+GM=; fh=1uFngekeZT2FVGQaKpK4gjTIex4FU0hdfexTfOUKej8=; b=Bc/dARmo/wU2VRE6ihwG08eQOep2mzwz0NVoAZ1/NzlpMNzdVX0uT9pbL5PYkRFlxI 9wu7Ylsu+LVdCKg2sZlAGa9EH1Lf36OVQpVtxBKzGT2lQ0LrrRD3xBa+9xka2ipjKy+u jKnbpc1Px6JHxWGkPH8+0+fj3wEAv6lBD5ci9y6rztx5zC+WRryAgoJEOjylIc/AXmHI PcC7fb989w6ua1PJQWz5bR4w/JyBwy3T3ie0pJD7DSo+i6n5vX+GQSWDtub5Q2ZHnraD t+qngxJ1YOQW7Y5GP46XgLkaKV2ALgFm+QXm/he0KsWLQCmpOz+wvTiw+Bil8TtUbQ+u DCDw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=QVSdXkKS; spf=pass (google.com: domain of linux-kernel+bounces-16679-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-16679-ouuuleilei=gmail.com@vger.kernel.org" Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 5/9] PCI/pwrseq: add pwrseq core code Date: Thu, 4 Jan 2024 14:01:19 +0100 Message-Id: <20240104130123.37115-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165182302573273 X-GMAIL-MSGID: 1787165182302573273 From: Bartosz Golaszewski Some PCIe devices must be powered-on before they can be detected on the bus. Introduce a simple framework built around the PCIe port driver which now instantiates its child devices from device-tree. The way this works is: a DT node representing a PCIe device connected to the port can be matched against its power sequencing platform driver. If the match succeeds, the driver is responsible for powering-up the device and calling pcie_pwrseq_device_enable() 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 sequencing device. Signed-off-by: Bartosz Golaszewski --- drivers/pci/pcie/Kconfig | 2 + drivers/pci/pcie/Makefile | 2 + drivers/pci/pcie/pwrseq/Kconfig | 8 +++ drivers/pci/pcie/pwrseq/Makefile | 3 ++ drivers/pci/pcie/pwrseq/pwrseq.c | 83 ++++++++++++++++++++++++++++++++ include/linux/pcie-pwrseq.h | 24 +++++++++ 6 files changed, 122 insertions(+) create mode 100644 drivers/pci/pcie/pwrseq/Kconfig create mode 100644 drivers/pci/pcie/pwrseq/Makefile create mode 100644 drivers/pci/pcie/pwrseq/pwrseq.c create mode 100644 include/linux/pcie-pwrseq.h diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 8999fcebde6a..064843ab6866 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -155,3 +155,5 @@ config PCIE_EDR the PCI Firmware Specification r3.2. Enable this if you want to support hybrid DPC model which uses both firmware and OS to implement DPC. + +source "drivers/pci/pcie/pwrseq/Kconfig" diff --git a/drivers/pci/pcie/Makefile b/drivers/pci/pcie/Makefile index 8de4ed5f98f1..ace91384113d 100644 --- a/drivers/pci/pcie/Makefile +++ b/drivers/pci/pcie/Makefile @@ -13,3 +13,5 @@ obj-$(CONFIG_PCIE_PME) += pme.o obj-$(CONFIG_PCIE_DPC) += dpc.o obj-$(CONFIG_PCIE_PTM) += ptm.o obj-$(CONFIG_PCIE_EDR) += edr.o + +obj-$(CONFIG_PCIEPORTBUS) += pwrseq/ diff --git a/drivers/pci/pcie/pwrseq/Kconfig b/drivers/pci/pcie/pwrseq/Kconfig new file mode 100644 index 000000000000..010e31f432c9 --- /dev/null +++ b/drivers/pci/pcie/pwrseq/Kconfig @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 + +menuconfig PCIE_PWRSEQ + bool "PCIe Power Sequencing support" + depends on PCIEPORTBUS + help + Say yes here to enable support for PCIe power sequencing + drivers. diff --git a/drivers/pci/pcie/pwrseq/Makefile b/drivers/pci/pcie/pwrseq/Makefile new file mode 100644 index 000000000000..da99566594f6 --- /dev/null +++ b/drivers/pci/pcie/pwrseq/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_PCIE_PWRSEQ) += pwrseq.o diff --git a/drivers/pci/pcie/pwrseq/pwrseq.c b/drivers/pci/pcie/pwrseq/pwrseq.c new file mode 100644 index 000000000000..c4f7958074c9 --- /dev/null +++ b/drivers/pci/pcie/pwrseq/pwrseq.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static int pcie_pwrseq_notify(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct pcie_pwrseq *pwrseq = container_of(nb, struct pcie_pwrseq, nb); + struct device *dev = data; + + if (dev_fwnode(dev) != dev_fwnode(pwrseq->dev)) + return NOTIFY_DONE; + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + device_set_of_node_from_dev(dev, pwrseq->dev); + break; + case BUS_NOTIFY_BOUND_DRIVER: + pwrseq->link = device_link_add(dev, pwrseq->dev, + DL_FLAG_AUTOREMOVE_CONSUMER); + if (!pwrseq->link) + dev_err(pwrseq->dev, "Failed to add device link\n"); + break; + case BUS_NOTIFY_UNBOUND_DRIVER: + device_link_del(pwrseq->link); + break; + } + + return NOTIFY_DONE; +} + +int pcie_pwrseq_device_enable(struct pcie_pwrseq *pwrseq) +{ + if (!pwrseq->dev) + return -ENODEV; + + pwrseq->nb.notifier_call = pcie_pwrseq_notify; + bus_register_notifier(&pci_bus_type, &pwrseq->nb); + + pci_lock_rescan_remove(); + pci_rescan_bus(to_pci_dev(pwrseq->dev->parent)->bus); + pci_unlock_rescan_remove(); + + return 0; +} +EXPORT_SYMBOL_GPL(pcie_pwrseq_device_enable); + +void pcie_pwrseq_device_disable(struct pcie_pwrseq *pwrseq) +{ + bus_unregister_notifier(&pci_bus_type, &pwrseq->nb); +} +EXPORT_SYMBOL_GPL(pcie_pwrseq_device_disable); + +static void devm_pcie_pwrseq_device_disable(void *data) +{ + struct pcie_pwrseq *pwrseq = data; + + pcie_pwrseq_device_disable(pwrseq); +} + +int devm_pcie_pwrseq_device_enable(struct device *dev, + struct pcie_pwrseq *pwrseq) +{ + int ret; + + ret = pcie_pwrseq_device_enable(pwrseq); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, devm_pcie_pwrseq_device_disable, + pwrseq); +} +EXPORT_SYMBOL_GPL(devm_pcie_pwrseq_device_enable); diff --git a/include/linux/pcie-pwrseq.h b/include/linux/pcie-pwrseq.h new file mode 100644 index 000000000000..6abb5796754e --- /dev/null +++ b/include/linux/pcie-pwrseq.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2024 Linaro Ltd. + */ + +#ifndef __PCIE_PWRSEQ_H__ +#define __PCIE_PWRSEQ_H__ + +#include + +struct device; + +struct pcie_pwrseq { + struct notifier_block nb; + struct device *dev; + struct device_link *link; +}; + +int pcie_pwrseq_device_enable(struct pcie_pwrseq *pwrseq); +void pcie_pwrseq_device_disable(struct pcie_pwrseq *pwrseq); +int devm_pcie_pwrseq_device_enable(struct device *dev, + struct pcie_pwrseq *pwrseq); + +#endif /* __PCIE_PWRSEQ_H__ */ From patchwork Thu Jan 4 13:01:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184992 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5597275dyb; Thu, 4 Jan 2024 05:06:17 -0800 (PST) X-Google-Smtp-Source: AGHT+IHIe/yBQ3ZwrU+Hev1ei/65zlGFNtft5iqnVoHCnEX2qzFl+SPNv1f21q5/E+N6v8VwTKOq X-Received: by 2002:a05:6122:20a8:b0:4b7:18b3:b128 with SMTP id i40-20020a05612220a800b004b718b3b128mr441109vkd.19.1704373577556; Thu, 04 Jan 2024 05:06:17 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373577; cv=none; d=google.com; s=arc-20160816; b=NOiWgQfVUHZ4GWtaCFM5+fJZmiMNotJWl7pi2dWxdSVNUxeYn2q+AzfqQ+GssgVLP9 khN0QzHHaGYqdDRQo1J/lkl4ALm5m1HFXlDf6uBfFMeVHjr4FZ/KPzC0pCnazWil5MjO 0PU+gmGaWcLLpRAQLBx/dJv8vqwqiuGOQ9zNQzUcGpaKypgPwzLdTU6/ILTaSiPL5K5b k7OvNExLtekPixGAp1cUapGn40U2Zq1BRCUaryBLbWdph74ddFEQ+0+huCOHQqbyDmM6 9kMOUTQwrcU5Dd6uRxbFZT4iMEUlcj77mHmg3x4WLNZqsDq9btTs9pqg9l2Otl+hp73U H2zg== ARC-Message-Signature: i=1; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 6/9] dt-bindings: vendor-prefixes: add a PCI prefix for Qualcomm Atheros Date: Thu, 4 Jan 2024 14:01:20 +0100 Message-Id: <20240104130123.37115-7-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165228123538763 X-GMAIL-MSGID: 1787165228123538763 From: Bartosz Golaszewski Document the PCI vendor prefix for Qualcomm Atheros so that we can define the QCA PCI devices on device tree. Signed-off-by: Bartosz Golaszewski --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 2dc098b39234..297d6037cd12 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1128,6 +1128,7 @@ patternProperties: "^purism,.*": description: Purism, SPC "^qca,.*": + "^pci17cb,.*": description: Qualcomm Atheros, Inc. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 7/9] dt-bindings: wireless: ath11k: describe QCA6390 Date: Thu, 4 Jan 2024 14:01:21 +0100 Message-Id: <20240104130123.37115-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165248688540658 X-GMAIL-MSGID: 1787165248688540658 From: Bartosz Golaszewski Describe the ath11k variant present on the QCA6390 module. Signed-off-by: Bartosz Golaszewski --- .../bindings/net/wireless/qcom,ath11k-pci.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml index 817f02a8b481..f584c25f4276 100644 --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k-pci.yaml @@ -16,6 +16,7 @@ description: | properties: compatible: enum: + - pci17cb,1101 # QCA6390 - pci17cb,1103 # WCN6855 reg: @@ -27,6 +28,19 @@ properties: string to uniquely identify variant of the calibration data for designs with colliding bus and device ids + enable-gpios: + description: GPIO line enabling the ATH11K module when asserted. + maxItems: 1 + + vddpmu-supply: + description: VDD_PMU supply regulator handle + + vddpcie1-supply: + description: VDD_PCIE1 supply regulator handle + + vddpcie2-supply: + description: VDD_PCIE2 supply regulator handle + required: - compatible - reg From patchwork Thu Jan 4 13:01:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 184994 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:6f82:b0:100:9c79:88ff with SMTP id tb2csp5597938dyb; Thu, 4 Jan 2024 05:07:19 -0800 (PST) X-Google-Smtp-Source: AGHT+IE1gfX+Km3YhG/79+RmI1nNjNlps1AD9KcXmARRDtJoVl2lSbXGpGwUapigG8Wre2suyPPs X-Received: by 2002:a05:6214:2503:b0:67f:b7fa:9d4f with SMTP id gf3-20020a056214250300b0067fb7fa9d4fmr752611qvb.119.1704373639325; Thu, 04 Jan 2024 05:07:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704373639; cv=none; d=google.com; s=arc-20160816; b=zaeOOtyZfV1LRgGe2jdOXrvocABts8RYDJYlVSOiSwzIpCeneGUFt+RXub6cbhaWm0 /tmHXriyOQwXcklThdIveqp2iJlG/Y1YrjJUI+29EmIz0L5Ud83kunZc6P93E5mnYrYH NBYwXQSFrugmGbs2Y26aaUEF1knpWyy9xCOHNzXXU27Nm4v+kfT6hZO3Yj4UIzZmAjYy jo9rfsZ9aQLyXnAnYeaxn7ZyNA6c2v6ML2VTSeCp/iLZ0hR38zgUeu/yt8f9WLyr9yqO pS0u6MdGSOeyeIYRQ828LpfwPnyeYUUcJmXZktl2QPIlFhOIKOMBKl9gxIL0VMypdHEe jYyQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=3E4Vbkb/LrKV7uJsCtqtIqNAbn7WFp6GN2T7jU5w+KA=; fh=1uFngekeZT2FVGQaKpK4gjTIex4FU0hdfexTfOUKej8=; b=OtLU5InMZfkM+dWUIsq4JDPCf+3ANjA7jUthC71DgIWVWJ4JjHrECisO2Rh0TCJupP 4GziIbDpKXJSg3pAF0p2MHTiNjOlIqoMKFKq4Cb3RFxqJ/Gaxt+RySeafeFbUZT0wXRy N2uAhxmvVY/L9b3Al/xa4OEy58CpK1/KSUf2sVmiz5E3izI9ywDRByNan3Y91MvV8IQI C7Y7ynLGgDbx9dYUIKupMnwMDQEZS6U/6lPMFsRwYNwGqCJrDaCPOD5to+mHH3EWRu8n +4BVzsVMIyqtzeMvxQzhL3KmQ6Hg2Hv2nX1TGh3iiHP7lXx/ghSlQ++tjAwmZwof40B8 5BkA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=dH8srkkZ; spf=pass (google.com: domain of linux-kernel+bounces-16682-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-16682-ouuuleilei=gmail.com@vger.kernel.org" Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 8/9] PCI/pwrseq: add a pwrseq driver for QCA6390 Date: Thu, 4 Jan 2024 14:01:22 +0100 Message-Id: <20240104130123.37115-9-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165293084643253 X-GMAIL-MSGID: 1787165293084643253 From: Bartosz Golaszewski Add a PCIe power sequencing driver that's capable of correctly powering up the ath11k module on QCA6390 using the PCIe pwrseq functionality. Signed-off-by: Bartosz Golaszewski --- drivers/pci/pcie/pwrseq/Kconfig | 11 + drivers/pci/pcie/pwrseq/Makefile | 1 + drivers/pci/pcie/pwrseq/pcie-pwrseq-qca6390.c | 197 ++++++++++++++++++ 3 files changed, 209 insertions(+) create mode 100644 drivers/pci/pcie/pwrseq/pcie-pwrseq-qca6390.c diff --git a/drivers/pci/pcie/pwrseq/Kconfig b/drivers/pci/pcie/pwrseq/Kconfig index 010e31f432c9..f9fe555b8506 100644 --- a/drivers/pci/pcie/pwrseq/Kconfig +++ b/drivers/pci/pcie/pwrseq/Kconfig @@ -6,3 +6,14 @@ menuconfig PCIE_PWRSEQ help Say yes here to enable support for PCIe power sequencing drivers. + +if PCIE_PWRSEQ + +config PCIE_PWRSEQ_QCA6390 + tristate "PCIe Power Sequencing driver for QCA6390" + depends on ARCH_QCOM || COMPILE_TEST + help + Enable support for the PCIe power sequencing driver for the + ath11k module of the QCA6390 WLAN/BT chip. + +endif diff --git a/drivers/pci/pcie/pwrseq/Makefile b/drivers/pci/pcie/pwrseq/Makefile index da99566594f6..da3e02063404 100644 --- a/drivers/pci/pcie/pwrseq/Makefile +++ b/drivers/pci/pcie/pwrseq/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PCIE_PWRSEQ) += pwrseq.o +obj-$(CONFIG_PCIE_PWRSEQ_QCA6390) += pcie-pwrseq-qca6390.o diff --git a/drivers/pci/pcie/pwrseq/pcie-pwrseq-qca6390.c b/drivers/pci/pcie/pwrseq/pcie-pwrseq-qca6390.c new file mode 100644 index 000000000000..e9fddbb642fe --- /dev/null +++ b/drivers/pci/pcie/pwrseq/pcie-pwrseq-qca6390.c @@ -0,0 +1,197 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct pcie_pwrseq_qca6390_vreg { + const char *name; + unsigned int load_uA; +}; + +struct pcie_pwrseq_qca6390_pdata { + struct pcie_pwrseq_qca6390_vreg *vregs; + size_t num_vregs; + unsigned int delay_msec; +}; + +struct pcie_pwrseq_qca6390_ctx { + struct pcie_pwrseq pwrseq; + const struct pcie_pwrseq_qca6390_pdata *pdata; + struct regulator_bulk_data *regs; + struct gpio_descs *en_gpios; + unsigned long *en_gpios_values; +}; + +static struct pcie_pwrseq_qca6390_vreg pcie_pwrseq_qca6390_vregs[] = { + { + .name = "vddpmu", + .load_uA = 1250000, + }, + { + .name = "vddpcie1", + .load_uA = 35000, + }, + { + .name = "vddpcie2", + .load_uA = 15000, + }, +}; + +static struct pcie_pwrseq_qca6390_pdata pcie_pwrseq_qca6390_of_data = { + .vregs = pcie_pwrseq_qca6390_vregs, + .num_vregs = ARRAY_SIZE(pcie_pwrseq_qca6390_vregs), + .delay_msec = 16, +}; + +static int pcie_pwrseq_qca6390_power_on(struct pcie_pwrseq_qca6390_ctx *ctx) +{ + int ret; + + ret = regulator_bulk_enable(ctx->pdata->num_vregs, ctx->regs); + if (ret) + return ret; + + bitmap_fill(ctx->en_gpios_values, ctx->en_gpios->ndescs); + + ret = gpiod_set_array_value_cansleep(ctx->en_gpios->ndescs, + ctx->en_gpios->desc, + ctx->en_gpios->info, + ctx->en_gpios_values); + if (ret) { + regulator_bulk_disable(ctx->pdata->num_vregs, ctx->regs); + return ret; + } + + if (ctx->pdata->delay_msec) + msleep(ctx->pdata->delay_msec); + + return 0; +} + +static int pcie_pwrseq_qca6390_power_off(struct pcie_pwrseq_qca6390_ctx *ctx) +{ + int ret; + + bitmap_zero(ctx->en_gpios_values, ctx->en_gpios->ndescs); + + ret = gpiod_set_array_value_cansleep(ctx->en_gpios->ndescs, + ctx->en_gpios->desc, + ctx->en_gpios->info, + ctx->en_gpios_values); + if (ret) + return ret; + + return regulator_bulk_disable(ctx->pdata->num_vregs, ctx->regs); +} + +static void devm_pcie_pwrseq_qca6390_power_off(void *data) +{ + struct pcie_pwrseq_qca6390_ctx *ctx = data; + + pcie_pwrseq_qca6390_power_off(ctx); +} + +static int pcie_pwrseq_qca6309_probe(struct platform_device *pdev) +{ + struct pcie_pwrseq_qca6390_ctx *ctx; + struct device *dev = &pdev->dev; + int ret, i; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->pdata = of_device_get_match_data(dev); + if (!ctx->pdata) + return dev_err_probe(dev, -ENODEV, + "Failed to obtain platform data\n"); + + if (ctx->pdata->vregs) { + 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].name; + + ret = devm_regulator_bulk_get(dev, ctx->pdata->num_vregs, + ctx->regs); + if (ret < 0) + return dev_err_probe(dev, ret, + "Failed to get all regulators\n"); + + for (i = 0; i < ctx->pdata->num_vregs; i++) { + ret = regulator_set_load(ctx->regs[i].consumer, + ctx->pdata->vregs[i].load_uA); + if (ret) + return dev_err_probe(dev, ret, + "Failed to set vreg load\n"); + } + } + + ctx->en_gpios = devm_gpiod_get_array_optional(dev, "enable", + GPIOD_OUT_LOW); + if (IS_ERR(ctx->en_gpios)) + return dev_err_probe(dev, PTR_ERR(ctx->en_gpios), + "Failed to get enable GPIOs\n"); + + ctx->en_gpios_values = devm_bitmap_zalloc(dev, ctx->en_gpios->ndescs, + GFP_KERNEL); + if (!ctx->en_gpios_values) + return -ENOMEM; + + ret = pcie_pwrseq_qca6390_power_on(ctx); + if (ret) + return dev_err_probe(dev, ret, + "Failed to power on the device\n"); + + ret = devm_add_action_or_reset(dev, devm_pcie_pwrseq_qca6390_power_off, + ctx); + if (ret) + return ret; + + ctx->pwrseq.dev = dev; + + ret = devm_pcie_pwrseq_device_enable(dev, &ctx->pwrseq); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register the pwrseq wrapper\n"); + + return 0; +} + +static const struct of_device_id pcie_pwrseq_qca6309_of_match[] = { + { + .compatible = "pci17cb,1101", + .data = &pcie_pwrseq_qca6390_of_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, pcie_pwrseq_qca6309_of_match); + +static struct platform_driver pcie_pwrseq_qca6309_driver = { + .driver = { + .name = "pcie-pwrseq-qca6390", + .of_match_table = pcie_pwrseq_qca6309_of_match, + }, + .probe = pcie_pwrseq_qca6309_probe, +}; +module_platform_driver(pcie_pwrseq_qca6309_driver); 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Catalin Marinas , Will Deacon , Bjorn Helgaas , Heiko Stuebner , Jernej Skrabec , Chris Morgan , Linus Walleij , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , =?utf-8?q?N=C3=ADcolas_F_=2E_R_?= =?utf-8?q?=2E_A_=2E_Prado?= , Marek Szyprowski , Peng Fan , Robert Richter , Dan Williams , Jonathan Cameron , Terry Bowman , Kuppuswamy Sathyanarayanan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Huacai Chen , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Bartosz Golaszewski Subject: [RFC 9/9] arm64: defconfig: enable the PCIe power sequencing for QCA6390 Date: Thu, 4 Jan 2024 14:01:23 +0100 Message-Id: <20240104130123.37115-10-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240104130123.37115-1-brgl@bgdev.pl> References: <20240104130123.37115-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787165302188192034 X-GMAIL-MSGID: 1787165302188192034 From: Bartosz Golaszewski Build the QCA6390 PCIe power sequencing module by default. Signed-off-by: Bartosz Golaszewski --- arch/arm64/configs/defconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 361c31b5d064..7daa863f25e5 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -210,6 +210,8 @@ CONFIG_NFC_S3FWRN5_I2C=m CONFIG_PCI=y CONFIG_PCIEPORTBUS=y CONFIG_PCIEAER=y +CONFIG_PCIE_PWRSEQ=y +CONFIG_PCIE_PWRSEQ_QCA6390=m CONFIG_PCI_IOV=y CONFIG_PCI_PASID=y CONFIG_HOTPLUG_PCI=y