From patchwork Tue Jan 7 18:15:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 11321573 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6D8381398 for ; Tue, 7 Jan 2020 18:16:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0478120848 for ; Tue, 7 Jan 2020 18:16:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="SQ2gKFhN"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="BJDhWiM+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0478120848 Authentication-Results: mail.kernel.org; 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This block is part of the AVS monitor which contains a bunch of raw sensors. Signed-off-by: Stefan Wahren Reviewed-by: Rob Herring Reviewed-by: Nicolas Saenz Julienne --- .../bindings/thermal/brcm,avs-ro-thermal.yaml | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml -- 2.7.4 diff --git a/Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml b/Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml new file mode 100644 index 0000000..98e7b57 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/brcm,avs-ro-thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom AVS ring oscillator thermal + +maintainers: + - Stefan Wahren + +description: |+ + The thermal node should be the child of a syscon node with the + required property: + + - compatible: Should be one of the following: + "brcm,bcm2711-avs-monitor", "syscon", "simple-mfd" + + Refer to the the bindings described in + Documentation/devicetree/bindings/mfd/syscon.txt + +properties: + compatible: + const: brcm,bcm2711-thermal + + reg: + maxItems: 1 + +required: + - compatible + - reg + +examples: + - | + avs-monitor@7d5d2000 { + compatible = "brcm,bcm2711-avs-monitor", + "syscon", "simple-mfd"; + reg = <0x7d5d2000 0xf00>; + + thermal: thermal { + compatible = "brcm,bcm2711-thermal"; + #thermal-sensor-cells = <0>; + }; + }; +... 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The driver only provides SoC temperature reading so far. Signed-off-by: Stefan Wahren Reviewed-by: Florian Fainelli Reviewed-by: Nicolas Saenz Julienne Tested-by: Nicolas Saenz Julienne --- drivers/thermal/broadcom/Kconfig | 7 ++ drivers/thermal/broadcom/Makefile | 1 + drivers/thermal/broadcom/bcm2711_thermal.c | 129 +++++++++++++++++++++++++++++ 3 files changed, 137 insertions(+) create mode 100644 drivers/thermal/broadcom/bcm2711_thermal.c -- 2.7.4 diff --git a/drivers/thermal/broadcom/Kconfig b/drivers/thermal/broadcom/Kconfig index cf43e15..061f1db 100644 --- a/drivers/thermal/broadcom/Kconfig +++ b/drivers/thermal/broadcom/Kconfig @@ -1,4 +1,11 @@ # SPDX-License-Identifier: GPL-2.0-only +config BCM2711_THERMAL + tristate "Broadcom AVS RO thermal sensor driver" + depends on ARCH_BCM2835 || COMPILE_TEST + depends on THERMAL_OF && MFD_SYSCON + help + Support for thermal sensors on Broadcom BCM2711 SoCs. + config BCM2835_THERMAL tristate "Thermal sensors on bcm2835 SoC" depends on ARCH_BCM2835 || COMPILE_TEST diff --git a/drivers/thermal/broadcom/Makefile b/drivers/thermal/broadcom/Makefile index 490ab1f..c917b24 100644 --- a/drivers/thermal/broadcom/Makefile +++ b/drivers/thermal/broadcom/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_BCM2711_THERMAL) += bcm2711_thermal.o obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o obj-$(CONFIG_BRCMSTB_THERMAL) += brcmstb_thermal.o obj-$(CONFIG_BCM_NS_THERMAL) += ns-thermal.o diff --git a/drivers/thermal/broadcom/bcm2711_thermal.c b/drivers/thermal/broadcom/bcm2711_thermal.c new file mode 100644 index 0000000..b1d3c4d --- /dev/null +++ b/drivers/thermal/broadcom/bcm2711_thermal.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Broadcom AVS RO thermal sensor driver + * + * based on brcmstb_thermal + * + * Copyright (C) 2020 Stefan Wahren + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../thermal_hwmon.h" + +#define AVS_RO_TEMP_STATUS 0x200 + #define AVS_RO_TEMP_STATUS_valid_msk (BIT(16) | BIT(10)) + #define AVS_RO_TEMP_STATUS_data_msk GENMASK(9, 0) + +struct bcm2711_thermal_priv { + struct regmap *regmap; + struct device *dev; + struct thermal_zone_device *thermal; +}; + +static int bcm2711_get_temp(void *data, int *temp) +{ + struct bcm2711_thermal_priv *priv = data; + int slope = thermal_zone_get_slope(priv->thermal); + int offset = thermal_zone_get_offset(priv->thermal); + u32 val; + int ret; + long t; + + ret = regmap_read(priv->regmap, AVS_RO_TEMP_STATUS, &val); + if (ret) + return ret; + + if (!(val & AVS_RO_TEMP_STATUS_valid_msk)) { + dev_err(priv->dev, "reading not valid\n"); + return -EIO; + } + + val &= AVS_RO_TEMP_STATUS_data_msk; + + /* Convert a HW code to a temperature reading (millidegree celsius) */ + t = slope * val + offset; + if (t < 0) + *temp = 0; + else + *temp = t; + + return 0; +} + +static const struct thermal_zone_of_device_ops bcm2711_thermal_of_ops = { + .get_temp = bcm2711_get_temp, +}; + +static const struct of_device_id bcm2711_thermal_id_table[] = { + { .compatible = "brcm,bcm2711-thermal" }, + {}, +}; +MODULE_DEVICE_TABLE(of, bcm2711_thermal_id_table); + +static int bcm2711_thermal_probe(struct platform_device *pdev) +{ + struct thermal_zone_device *thermal; + struct bcm2711_thermal_priv *priv; + struct device *dev = &pdev->dev; + struct device_node *parent; + struct regmap *regmap; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + /* get regmap from syscon node */ + parent = of_get_parent(dev->of_node); /* parent should be syscon node */ + regmap = syscon_node_to_regmap(parent); + of_node_put(parent); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(dev, "failed to get regmap: %d\n", ret); + return ret; + } + priv->regmap = regmap; + priv->dev = dev; + + thermal = devm_thermal_zone_of_sensor_register(dev, 0, priv, + &bcm2711_thermal_of_ops); + if (IS_ERR(thermal)) { + ret = PTR_ERR(thermal); + dev_err(dev, "could not register sensor: %d\n", ret); + return ret; + } + + priv->thermal = thermal; + + thermal->tzp->no_hwmon = false; + ret = thermal_add_hwmon_sysfs(thermal); + if (ret) + return ret; + + return 0; +} + +static struct platform_driver bcm2711_thermal_driver = { + .probe = bcm2711_thermal_probe, + .driver = { + .name = "bcm2711_thermal", + .of_match_table = bcm2711_thermal_id_table, + }, +}; +module_platform_driver(bcm2711_thermal_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Stefan Wahren"); +MODULE_DESCRIPTION("Broadcom AVS RO thermal sensor driver"); From patchwork Tue Jan 7 18:15:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 11321577 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1E3DA138D for ; Tue, 7 Jan 2020 18:17:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D9D1920848 for ; Tue, 7 Jan 2020 18:17:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ik3qMsDb"; 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Signed-off-by: Stefan Wahren Reviewed-by: Nicolas Saenz Julienne Tested-by: Nicolas Saenz Julienne --- arch/arm/boot/dts/bcm2711.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) -- 2.7.4 diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi index 961bed8..96f341d 100644 --- a/arch/arm/boot/dts/bcm2711.dtsi +++ b/arch/arm/boot/dts/bcm2711.dtsi @@ -66,6 +66,17 @@ IRQ_TYPE_LEVEL_HIGH)>; }; + avs_monitor: avs-monitor@7d5d2000 { + compatible = "brcm,bcm2711-avs-monitor", + "syscon", "simple-mfd"; + reg = <0x7d5d2000 0xf00>; + + thermal: thermal { + compatible = "brcm,bcm2711-thermal"; + #thermal-sensor-cells = <0>; + }; + }; + dma: dma@7e007000 { compatible = "brcm,bcm2835-dma"; reg = <0x7e007000 0xb00>; @@ -363,6 +374,7 @@ &cpu_thermal { coefficients = <(-487) 410040>; + thermal-sensors = <&thermal>; }; &dsi0 { From patchwork Tue Jan 7 18:15:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 11321575 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E84E3138D for ; 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Tue, 07 Jan 2020 18:16:16 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1578420966; bh=ywvSvkZtxIFgQK2uzodzJ55BZghcFbFAXSLbAwo36wY=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=Idmw230VWPBhZW2v+dAYw62P6JElxPEL/uqCuoHO0gDvDK3VOnfVdcv9d1ALNkZ2+ Y+8kPpr9BiXxUfm8bw+Xmjv/SzBxlFpg2EK/a8Hg1b+OzEQC+AII1OlGsc5FjmhCdA PYd0h0yBiUAl3qCFDZaEL6GR5SqLeAQ2sKdGgVLY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([37.4.249.154]) by mail.gmx.com (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1M1HZo-1irdDo1LiM-002s6V; Tue, 07 Jan 2020 19:16:06 +0100 From: Stefan Wahren To: Zhang Rui , Daniel Lezcano , Amit Kucheria , Rob Herring , Mark Rutland , Nicolas Saenz Julienne , Florian Fainelli , Catalin Marinas , Will Deacon Subject: [PATCH V3 4/4] ARM: configs: Build BCM2711 thermal as module Date: Tue, 7 Jan 2020 19:15:57 +0100 Message-Id: <1578420957-32229-5-git-send-email-wahrenst@gmx.net> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1578420957-32229-1-git-send-email-wahrenst@gmx.net> References: <1578420957-32229-1-git-send-email-wahrenst@gmx.net> X-Provags-ID: V03:K1:KgT8/xCsDfTXBG/ZvIRxjN+W6EAwuQgL8jv7F25Vy4z+LXj8G1P FvRXVhgSwOlulZ964d6rnvX7HL7dcwoY5KFt4EhM20cYoQ7YJ90EDHTamYirCxIqbox1UqU ONycfR3lNn3uKEv5yBZAPy3RJBy/loio9XdwmoBs6tYkYaaVTtIztndrmforVufG7I03eQv W3OI55XFGJevmqp5FLjsQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:XO0bOe0Ep8o=:kSgMi1gYunuPgzCu/XiJe8 55cXkb2VEpp+0ZB7lgktyFvshluW/8SnuuoMm0yhsBOUju5moUy3EZx62VduAycSWKQ78+NnI nuuYaeMimJEZFIkXd/bIo8qA7TQgY5Ai7wFwAtnufeOK6yhqeXld+O6drS9SE7OUPwiRaFLvX a4z3zZIJ/WSdgxfIjZJl+1A8tbqJu7QHtc7BvlrnNqu0L7T9RP/4wKZFs+iqJxgb56ONYX6aW eJEAdrGioHnjoWK1N2opYc6mYPThXU7WIGI67W1LEp4sdfzemZwQzCuEX4itQkAnL2DeCQ5Ga TB3twKe/JfrKyCgWbB1LzE4zIekmdDkNCLP1O1ry0t5+zdTGCZqjgF0aW1XQwp7nUNAKqvnkR oGFH00fcZrTjP7GTsAHM1SFbj/j8S4XbS2KGdNqEc+X3ozKoe941uA4inBhtY+DCHFbDc82RB saG1XiaXGsPKwjXuAqFoy+XoGrMHnHWh5g9mP7Zd8K8eY9UW2y2qLVLlIfRct6viL+vCIg5bq bBOs7WNQuQK66Q8JwSFVNkWe5cjQ4sjCurxBOCJu6414eyACNqp75abbUH3UXbZ1ZWeQB05gV pAQjr6XZtxFBUpzRIscP1mp92bxLC60clMvMwMY7L3J2tmJzvf+8KaEZ46/AXpMn/5UHILhV8 RHgsmsQOZtPYbgegdxdoBc4kR22+31P9QayG4NNZpKN6TEFlqDfoNUbNez4dIJleG22IlSiAm HnfbzPvVXjeK2JiZBcfGTDhAuoGbB8Fj+2eQ26gxDe6zKM6e+8/ggitNae4Dbbw0frlGYT/H6 Wawodx5tZYYdi+XZ6h7xR7gVz+qUtDxU3/g+269QUGswvjIS+a6z7lzkEuyK7V6ieV8u7Eh4X sN1khUObrdWcgax2sqRsD0RD05hMRw3yVlf9xuWpUo/SWo+mVR/rXK6YkXDiRCL5kmMzaJ/ZF b4PktMNM1fUynsV780QqPYKWWfAdvMlDCWnofVBqBUPHArgmZeAkiFzfCcecwEBz+jAxwUZmE ANzUWQENqeKB/qYYpxtBwoBTpfvKT9aAuk83/Xxf8kHjFo2JE0BLWXqe+/i6FQUtXR4VmNd2G UVWlOQJHCJCaXerv7dUwcdFH2tluzwimauf3xv9Suhg06gzqG2AzZefj6DSqfSFAESG+a1r9m u1k2ZLky+lFSekVHbbxsc5W/2rXnl7YvbHVJ1NqvR0HhNJjn7ISBZGvzeJz7kFQCKjXZiQA76 XprBZmCVmQkyOoIyjE6h4g5xdzecqsXUyniZ7MA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200107_101615_064044_029A3653 X-CRM114-Status: GOOD ( 10.12 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (wahrenst[at]gmx.net) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [212.227.15.19 listed in list.dnswl.org] -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, Stefan Wahren , linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This builds the BCM2711 thermal driver as module for the Raspberry Pi 4. Signed-off-by: Stefan Wahren Reviewed-by: Florian Fainelli Reviewed-by: Nicolas Saenz Julienne Tested-by: Nicolas Saenz Julienne --- arch/arm/configs/multi_v7_defconfig | 1 + arch/arm64/configs/defconfig | 1 + 2 files changed, 2 insertions(+) -- 2.7.4 diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 3f1b96d..f5d19cc 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -496,6 +496,7 @@ CONFIG_IMX_THERMAL=y CONFIG_ROCKCHIP_THERMAL=y CONFIG_RCAR_THERMAL=y CONFIG_ARMADA_THERMAL=y +CONFIG_BCM2711_THERMAL=m CONFIG_BCM2835_THERMAL=m CONFIG_BRCMSTB_THERMAL=m CONFIG_ST_THERMAL_MEMMAP=y diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 6a83ba2..b2f6673 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -442,6 +442,7 @@ CONFIG_ROCKCHIP_THERMAL=m CONFIG_RCAR_THERMAL=y CONFIG_RCAR_GEN3_THERMAL=y CONFIG_ARMADA_THERMAL=y +CONFIG_BCM2711_THERMAL=m CONFIG_BCM2835_THERMAL=m CONFIG_BRCMSTB_THERMAL=m CONFIG_EXYNOS_THERMAL=y