From patchwork Mon Jan 15 10:05:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cosmo Chou X-Patchwork-Id: 13519441 Received: from mail-oa1-f45.google.com (mail-oa1-f45.google.com [209.85.160.45]) (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 02659FC11; Mon, 15 Jan 2024 10:05:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ImyIWIEy" Received: by mail-oa1-f45.google.com with SMTP id 586e51a60fabf-20400d5b54eso6091316fac.1; Mon, 15 Jan 2024 02:05:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1705313137; x=1705917937; 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=2xuERi+6bQR7y5tPqB1j/AvrNG5S4Bu3K4yfT+CBdxo=; b=ImyIWIEyF3Ir3I5KgNM309faoN3QF+XtpSfAqLcfcqBAdduftBj/pHXb+XMexq1fVm lD5dPXvHJQwz4PnI4Fau6ftjEnam/lYgHj50ehw6SzvOh3g9Pnne2aaMfnTn39VSuT6D NcjGlka8daRq4TLS9AJlTkjEhjDiNzZwupG+uE1ciah/Mw0n4j3/dpHt8U/5b9NGX93o 1fpKVh+o62SVkAgw4yJipGkblEVpYoL27VrezuF31GhOo0c3AJA9uoiHUepLLtrwWBVi JbqtvdW5xUQmJLhGsetivrrE3HUrc2Aqh4VNVmU429SmhL+ottQ13dVDHz8qQTPR7lMc 4tOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705313137; x=1705917937; 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=2xuERi+6bQR7y5tPqB1j/AvrNG5S4Bu3K4yfT+CBdxo=; b=ZWMCRHi5jdR6g1qY6FMTGlZEAHUiqqF5lZr2gv1MKw1Foed5zqKIfAq9H+R/i/ECMu I0YIZK9YMn9ttR06DGBsdk8BeOzm2eWuILjvkj1n1z22JNvhTjiToqsOAc0Q19imBC7Q xr5H5yubuiYJc+ME6NPDWOgVLAsseSWNXsFQhlyL8YByN+ujxBSy/+G3M9OwTRZNbDAZ h0jzdrS2V6d4sWkYC/68tDxTkbHxBFcFYdNM9wvLmkmbDm6FGOxdW1j0WE/Z9MVXMtS/ HZAJbAijdu8x5bq+EPRMPiOm5DtdRSJI5ZJYvG3Mx6oiWvUzXAXKOjiuYWCbyVuxc3jz Q0CA== X-Gm-Message-State: AOJu0YwuFkL2RbTnDg2qj4TgEy1QVJENyPq0Uw+tQI03WDWelsBWgaGZ VTcwr6kFzks0N4l2s4gDbPM= X-Google-Smtp-Source: AGHT+IGJRg3xp69kXQGlFO0nRnfXE1MCJJVk/1Kyq0qjQ4MhVNt7O/VwtNkrJs3jJiFrhCicIqWczA== X-Received: by 2002:a05:6870:9a24:b0:206:81a7:9a7 with SMTP id fo36-20020a0568709a2400b0020681a709a7mr7646364oab.4.1705313137004; Mon, 15 Jan 2024 02:05:37 -0800 (PST) Received: from cosmo-ubuntu-2204.dhcpserver.bu9bmc.local (1-34-21-66.hinet-ip.hinet.net. [1.34.21.66]) by smtp.gmail.com with ESMTPSA id d10-20020a65424a000000b005cda7a1d72dsm6870712pgq.74.2024.01.15.02.05.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jan 2024 02:05:36 -0800 (PST) From: Cosmo Chou To: linux@roeck-us.net, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jdelvare@suse.com, corbet@lwn.net, broonie@kernel.org, naresh.solanki@9elements.com, vincent@vtremblay.dev, patrick.rudolph@9elements.com, luca.ceresoli@bootlin.com, bhelgaas@google.com, festevam@denx.de, alexander.stein@ew.tq-group.com, heiko@sntech.de, jernej.skrabec@gmail.com, macromorgan@hotmail.com, forbidden405@foxmail.com, sre@kernel.org, linus.walleij@linaro.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, chou.cosmo@gmail.com, cosmo.chou@quantatw.com, Conor Dooley Subject: [PATCH v4 1/3] dt-bindings: vendor-prefixes: add asteralabs Date: Mon, 15 Jan 2024 18:05:16 +0800 Message-Id: <20240115100518.2887549-2-chou.cosmo@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240115100518.2887549-1-chou.cosmo@gmail.com> References: <20240115100518.2887549-1-chou.cosmo@gmail.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add vendor prefix for Astera Labs, Inc. https://www.asteralabs.com Signed-off-by: Cosmo Chou Acked-by: Conor Dooley --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 02aaa1f538b2..ec8cfe1b46b0 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -157,6 +157,8 @@ patternProperties: description: ASPEED Technology Inc. "^asrock,.*": description: ASRock Inc. + "^asteralabs,.*": + description: Astera Labs, Inc. "^asus,.*": description: AsusTek Computer Inc. "^atheros,.*": From patchwork Mon Jan 15 10:05:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cosmo Chou X-Patchwork-Id: 13519442 Received: from mail-oa1-f45.google.com (mail-oa1-f45.google.com [209.85.160.45]) (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 8F3E11E864; Mon, 15 Jan 2024 10:05:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="D16O8uQn" Received: by mail-oa1-f45.google.com with SMTP id 586e51a60fabf-20440084f25so3191339fac.2; Mon, 15 Jan 2024 02:05:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1705313142; x=1705917942; 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=xOCn5sPGUNxptqZ00MTz/CtUGz7wrqw8h72sOugpjK8=; b=D16O8uQnbKhyd/nmKTDGXklK2tQTKbBCJvdb36uooYTaz7VCLm+lvWUd6OAOJjxGvq tobr87HP0bJ1OzHbGsldGsgjpiGzJNjahQfeenY2PWzgBJDFUOZZvLQ+BORPRcvbEtyC G/GSMgGxVInnT2xkEnr0OuXGp4jApHXhe+E2ojjlfvHuOOBhPG/GwqAIKnG98VxbtuvN y4UqdiNrXBdIvnkdwJRe2FbNl68+MlKjGecqOtYHG9tIosxfOTFJgeq1jY2hHMLzv5kr E7si4YR9ps3mv3H+ynmVfF8UU+RNr7UGWQMV1avNJZEWpPKT8PbIqIPn2G5hyx7P3zkf bS8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705313142; x=1705917942; 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=xOCn5sPGUNxptqZ00MTz/CtUGz7wrqw8h72sOugpjK8=; b=lO+9VySOx69XafVessyG9kHJvUE9OZPcr0NFzVDv1yInaTNuY6LujsG26SeODe3L0t TJwgN3GCDI4D+FEfLvSp6k105HaPXVr1A5ZOBTSSgTspI2l6z+ZkILBcqWjKwlpVGUSP dQj4MWNmsbGklWnEDMsCZBsyIKURTta7+dyr9zM6ViIyls7iHkIVSl8Ce+ya8leYTrxG J+ggj2DBVp1WdbYKHeDlRJi6cxcH1zUhnYxrd4NI3hxv6xPdL9ZAS8pqsymIDBdkh1+D yJ6T/TYjLwqHOQ2S2Stg0LoprEuYKgmax28w0dgN3rtPCxkzTMMKTqBWTVCO2Py5JQPW xSzA== X-Gm-Message-State: AOJu0YzYFTt4VSfooNJHtoz/Te6d3nq6AxnODmAz2XDvQ3UsQNfQRQlK c5LYzgGsBYZiBtdLx2qaPQ0= X-Google-Smtp-Source: AGHT+IH90cZk7/t7gvO6UHNUwUEJMLal0zaXOhmy9g5PvC/vQaF8bs+d7oYxGV62xy504qOE0jVRGA== X-Received: by 2002:a05:6871:5229:b0:204:103a:fdc6 with SMTP id ht41-20020a056871522900b00204103afdc6mr3240449oac.99.1705313142676; Mon, 15 Jan 2024 02:05:42 -0800 (PST) Received: from cosmo-ubuntu-2204.dhcpserver.bu9bmc.local (1-34-21-66.hinet-ip.hinet.net. [1.34.21.66]) by smtp.gmail.com with ESMTPSA id d10-20020a65424a000000b005cda7a1d72dsm6870712pgq.74.2024.01.15.02.05.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jan 2024 02:05:42 -0800 (PST) From: Cosmo Chou To: linux@roeck-us.net, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jdelvare@suse.com, corbet@lwn.net, broonie@kernel.org, naresh.solanki@9elements.com, vincent@vtremblay.dev, patrick.rudolph@9elements.com, luca.ceresoli@bootlin.com, bhelgaas@google.com, festevam@denx.de, alexander.stein@ew.tq-group.com, heiko@sntech.de, jernej.skrabec@gmail.com, macromorgan@hotmail.com, forbidden405@foxmail.com, sre@kernel.org, linus.walleij@linaro.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, chou.cosmo@gmail.com, cosmo.chou@quantatw.com, Conor Dooley Subject: [PATCH v4 2/3] dt-bindings: trivial-devices: add Astera Labs PT5161L Date: Mon, 15 Jan 2024 18:05:17 +0800 Message-Id: <20240115100518.2887549-3-chou.cosmo@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240115100518.2887549-1-chou.cosmo@gmail.com> References: <20240115100518.2887549-1-chou.cosmo@gmail.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add dt-bindings for pt5161l temperature monitoring. Signed-off-by: Cosmo Chou Acked-by: Conor Dooley --- Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml index 21d1f066f875..db3e585962e4 100644 --- a/Documentation/devicetree/bindings/trivial-devices.yaml +++ b/Documentation/devicetree/bindings/trivial-devices.yaml @@ -47,6 +47,8 @@ properties: - adi,lt7182s # AMS iAQ-Core VOC Sensor - ams,iaq-core + # Temperature monitoring of Astera Labs PT5161L PCIe retimer + - asteralabs,pt5161l # i2c serial eeprom (24cxx) - at,24c08 # ATSHA204 - i2c h/w symmetric crypto module From patchwork Mon Jan 15 10:05:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cosmo Chou X-Patchwork-Id: 13519443 Received: from mail-oi1-f180.google.com (mail-oi1-f180.google.com [209.85.167.180]) (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 982E72BAE7; Mon, 15 Jan 2024 10:05:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cZNpGgU0" Received: by mail-oi1-f180.google.com with SMTP id 5614622812f47-3bd67e9d6ceso1095122b6e.3; Mon, 15 Jan 2024 02:05:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1705313148; x=1705917948; 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=cE/sruch355aNPyWFCJ0Jm77E7XLyVymxmRq0m4YSas=; b=cZNpGgU0pF6pYV1Hj3BgMVhycPng/vyMWQBz6YviobfLeX7hCEMFeRewU4FvZEPGds 1/XiROr1FPkB6ingX96gWw+WQ7B7sKaptquWqsHBbcv030bwvJ/QcuZZxs1206TaIf2Z KbYoTYXzT4sW6qB14RAY0WAmLvItmNp9UZTqHHwu8roa3qfY6UuFo97q+c6rwl+XhRE1 KZDKzl4BiEtflmPOuVwQaj8bPE4uhV1QKCDzCsWxKvhMlwI6kagqdE92gaKqZfEvb6TG kpxnQCwwvWIiXcnioqGVJOteeVnzv9ezoArUEnW3xqF1PCBG+ygYrGaqHF5bCGzVftO/ duaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705313148; x=1705917948; 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=cE/sruch355aNPyWFCJ0Jm77E7XLyVymxmRq0m4YSas=; b=V3wm7Sxs/TOcZaRea0Anaqskh6X4/jJrcHumKaVvEkIk7HxtzR8NM1ktO0HAkdE/wV toKR4nBuhaAdRNK6qxoguSYZU8c+TLGamoROnKOvCb71EYioGzyMLr7RzLTfrk8CshC/ WZ2E8M2kxT+FpLNk7s86sOJtcV+3z68bWm2/GFNE7PaIjyYc7ysXLEEdd0QK87fJIzRE PtYSslzQ1aeupSz3bhfN8eI+sSGTrT/vmwLEpsSASAltSI0vEvMKIgJ4ABgUftpTgf+M APvBPKk409GWCVy3ZYLGXTK3rzcGC8jn9OF6+Inu66QHtI0C73+WysFTc+Dx5mwOTSIO dKAQ== X-Gm-Message-State: AOJu0YybJDMHo0HXU3+StNMwjB96C8LXnUsrX8YSFDllX2Dl1DNzDqjP 1BaFIWY4uU9J9SA/+CCxJ6w= X-Google-Smtp-Source: AGHT+IHNlAuvI1Yy0qjR74ZU34fbPHYJni2lfQQutXRngLMyw9BQESnCEMkjUkUL3lYkD96bLZjiPw== X-Received: by 2002:a05:6358:c11a:b0:175:7201:5785 with SMTP id fh26-20020a056358c11a00b0017572015785mr3967014rwb.7.1705313148317; Mon, 15 Jan 2024 02:05:48 -0800 (PST) Received: from cosmo-ubuntu-2204.dhcpserver.bu9bmc.local (1-34-21-66.hinet-ip.hinet.net. [1.34.21.66]) by smtp.gmail.com with ESMTPSA id d10-20020a65424a000000b005cda7a1d72dsm6870712pgq.74.2024.01.15.02.05.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jan 2024 02:05:47 -0800 (PST) From: Cosmo Chou To: linux@roeck-us.net, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jdelvare@suse.com, corbet@lwn.net, broonie@kernel.org, naresh.solanki@9elements.com, vincent@vtremblay.dev, patrick.rudolph@9elements.com, luca.ceresoli@bootlin.com, bhelgaas@google.com, festevam@denx.de, alexander.stein@ew.tq-group.com, heiko@sntech.de, jernej.skrabec@gmail.com, macromorgan@hotmail.com, forbidden405@foxmail.com, sre@kernel.org, linus.walleij@linaro.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, chou.cosmo@gmail.com, cosmo.chou@quantatw.com Subject: [PATCH v4 3/3] hwmon: Add driver for Astera Labs PT5161L retimer Date: Mon, 15 Jan 2024 18:05:18 +0800 Message-Id: <20240115100518.2887549-4-chou.cosmo@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240115100518.2887549-1-chou.cosmo@gmail.com> References: <20240115100518.2887549-1-chou.cosmo@gmail.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This driver implements support for temperature monitoring of Astera Labs PT5161L series PCIe retimer chips. This driver implementation originates from the CSDK available at Link: https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14 The communication protocol utilized is based on the I2C/SMBus standard. Signed-off-by: Cosmo Chou --- Documentation/hwmon/index.rst | 1 + Documentation/hwmon/pt5161l.rst | 42 ++ MAINTAINERS | 7 + drivers/hwmon/Kconfig | 10 + drivers/hwmon/Makefile | 1 + drivers/hwmon/pt5161l.c | 670 ++++++++++++++++++++++++++++++++ 6 files changed, 731 insertions(+) create mode 100644 Documentation/hwmon/pt5161l.rst create mode 100644 drivers/hwmon/pt5161l.c diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index c7ed1f73ac06..9f5f215fcb2d 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -185,6 +185,7 @@ Hardware Monitoring Kernel Drivers pmbus powerz powr1220 + pt5161l pxe1610 pwm-fan q54sj108a2 diff --git a/Documentation/hwmon/pt5161l.rst b/Documentation/hwmon/pt5161l.rst new file mode 100644 index 000000000000..1b97336991ea --- /dev/null +++ b/Documentation/hwmon/pt5161l.rst @@ -0,0 +1,42 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver pt5161l +===================== + +Supported chips: + + * Astera Labs PT5161L + + Prefix: 'pt5161l' + + Addresses scanned: I2C 0x20 - 0x27 + + Datasheet: Not publicly available. + +Authors: Cosmo Chou + +Description +----------- + +This driver implements support for temperature monitoring of Astera Labs +PT5161L series PCIe retimer chips. + +This driver implementation originates from the CSDK available at +https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14 +The communication protocol utilized is based on the I2C/SMBus standard. + +Sysfs entries +---------------- + +================ ============================================== +temp1_input Measured temperature (in millidegrees Celsius) +================ ============================================== + +Debugfs entries +---------------- + +================ =============================== +fw_load_status Firmware load status +fw_ver Firmware version of the retimer +heartbeat_status Heartbeat status +================ =============================== diff --git a/MAINTAINERS b/MAINTAINERS index 391bbb855cbe..e194246f3c5c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17568,6 +17568,13 @@ F: fs/pstore/ F: include/linux/pstore* K: \b(pstore|ramoops) +PT5161L HARDWARE MONITOR DRIVER +M: Cosmo Chou +L: linux-hwmon@vger.kernel.org +S: Maintained +F: Documentation/hwmon/pt5161l.rst +F: drivers/hwmon/pt5161l.c + PTP HARDWARE CLOCK SUPPORT M: Richard Cochran L: netdev@vger.kernel.org diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index a608264da87d..c8d86a695f66 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1714,6 +1714,16 @@ source "drivers/hwmon/peci/Kconfig" source "drivers/hwmon/pmbus/Kconfig" +config SENSORS_PT5161L + tristate "Astera Labs PT5161L PCIe retimer hardware monitoring" + depends on I2C + help + If you say yes here you get support for temperature monitoring + on the Astera Labs PT5161L PCIe retimer. + + This driver can also be built as a module. If so, the module + will be called pt5161l. + config SENSORS_PWM_FAN tristate "PWM fan" depends on (PWM && OF) || COMPILE_TEST diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 47be39af5c03..0554d3ccb09a 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -180,6 +180,7 @@ obj-$(CONFIG_SENSORS_PC87427) += pc87427.o obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o obj-$(CONFIG_SENSORS_POWERZ) += powerz.o obj-$(CONFIG_SENSORS_POWR1220) += powr1220.o +obj-$(CONFIG_SENSORS_PT5161L) += pt5161l.o obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o obj-$(CONFIG_SENSORS_SBTSI) += sbtsi_temp.o diff --git a/drivers/hwmon/pt5161l.c b/drivers/hwmon/pt5161l.c new file mode 100644 index 000000000000..d7a47889bacf --- /dev/null +++ b/drivers/hwmon/pt5161l.c @@ -0,0 +1,670 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Aries current average temp ADC code CSR */ +#define ARIES_CURRENT_AVG_TEMP_ADC_CSR 0x42c + +/* Device Load check register */ +#define ARIES_CODE_LOAD_REG 0x605 +/* Value indicating FW was loaded properly, [3:1] = 3'b111 */ +#define ARIES_LOAD_CODE 0xe + +/* Main Micro Heartbeat register */ +#define ARIES_MM_HEARTBEAT_ADDR 0x923 + +/* Reg offset to specify Address for MM assisted accesses */ +#define ARIES_MM_ASSIST_REG_ADDR_OFFSET 0xd99 +/* Reg offset to specify Command for MM assisted accesses */ +#define ARIES_MM_ASSIST_CMD_OFFSET 0xd9d +/* Reg offset to MM SPARE 0 used specify Address[7:0] */ +#define ARIES_MM_ASSIST_SPARE_0_OFFSET 0xd9f +/* Reg offset to MM SPARE 3 used specify Data Byte 0 */ +#define ARIES_MM_ASSIST_SPARE_3_OFFSET 0xda2 +/* Wide register reads */ +#define ARIES_MM_RD_WIDE_REG_2B 0x1d +#define ARIES_MM_RD_WIDE_REG_3B 0x1e +#define ARIES_MM_RD_WIDE_REG_4B 0x1f +#define ARIES_MM_RD_WIDE_REG_5B 0x20 + +/* Time delay between checking MM status of EEPROM write (microseconds) */ +#define ARIES_MM_STATUS_TIME 5000 + +/* AL Main SRAM DMEM offset (A0) */ +#define AL_MAIN_SRAM_DMEM_OFFSET (64 * 1024) +/* SRAM read command */ +#define AL_TG_RD_LOC_IND_SRAM 0x16 + +/* Offset for main micro FW info */ +#define ARIES_MAIN_MICRO_FW_INFO (96 * 1024 - 128) +/* FW Info (Major) offset location in struct */ +#define ARIES_MM_FW_VERSION_MAJOR 0 +/* FW Info (Minor) offset location in struct */ +#define ARIES_MM_FW_VERSION_MINOR 1 +/* FW Info (Build no.) offset location in struct */ +#define ARIES_MM_FW_VERSION_BUILD 2 + +#define ARIES_TEMP_CAL_CODE_DEFAULT 84 + +/* Struct defining FW version loaded on an Aries device */ +struct pt5161l_fw_ver { + u8 major; + u8 minor; + u16 build; +}; + +/* Each client has this additional data */ +struct pt5161l_data { + struct i2c_client *client; + struct dentry *debugfs; + struct pt5161l_fw_ver fw_ver; + struct mutex lock; + bool init_done; + bool code_load_okay; /* indicate if code load reg value is expected */ + bool mm_heartbeat_okay; /* indicate if Main Micro heartbeat is good */ + bool mm_wide_reg_access; /* MM assisted wide register access */ +}; + +static struct dentry *pt5161l_debugfs_dir; + +/* + * Write multiple data bytes to Aries over I2C + */ +static int pt5161l_write_block_data(struct pt5161l_data *data, u32 address, + u8 len, u8 *val) +{ + struct i2c_client *client = data->client; + int ret; + u8 remain_len = len; + u8 xfer_len, curr_len; + u8 buf[16]; + u8 cmd = 0x0F; /* [7]:pec_en, [4:2]:func, [1]:start, [0]:end */ + u8 config = 0x40; /* [6]:cfg_type, [4:1]:burst_len, [0]:address bit16 */ + + while (remain_len > 0) { + if (remain_len > 4) { + curr_len = 4; + remain_len -= 4; + } else { + curr_len = remain_len; + remain_len = 0; + } + + buf[0] = config | (curr_len - 1) << 1 | ((address >> 16) & 0x1); + buf[1] = (address >> 8) & 0xff; + buf[2] = address & 0xff; + memcpy(&buf[3], val, curr_len); + + xfer_len = 3 + curr_len; + ret = i2c_smbus_write_block_data(client, cmd, xfer_len, buf); + if (ret) + return ret; + + val += curr_len; + address += curr_len; + } + + return 0; +} + +/* + * Read multiple data bytes from Aries over I2C + */ +static int pt5161l_read_block_data(struct pt5161l_data *data, u32 address, + u8 len, u8 *val) +{ + struct i2c_client *client = data->client; + int ret, tries; + u8 remain_len = len; + u8 curr_len; + u8 wbuf[16], rbuf[24]; + u8 cmd = 0x08; /* [7]:pec_en, [4:2]:func, [1]:start, [0]:end */ + u8 config = 0x00; /* [6]:cfg_type, [4:1]:burst_len, [0]:address bit16 */ + + while (remain_len > 0) { + if (remain_len > 16) { + curr_len = 16; + remain_len -= 16; + } else { + curr_len = remain_len; + remain_len = 0; + } + + wbuf[0] = config | (curr_len - 1) << 1 | + ((address >> 16) & 0x1); + wbuf[1] = (address >> 8) & 0xff; + wbuf[2] = address & 0xff; + + for (tries = 0; tries < 3; tries++) { + ret = i2c_smbus_write_block_data(client, (cmd | 0x2), 3, + wbuf); + if (ret) + return ret; + + ret = i2c_smbus_read_block_data(client, (cmd | 0x1), + rbuf); + if (ret == curr_len) + break; + } + if (tries >= 3) + return ret; + + memcpy(val, rbuf, curr_len); + val += curr_len; + address += curr_len; + } + + return 0; +} + +static int pt5161l_read_wide_reg(struct pt5161l_data *data, u32 address, + u8 width, u8 *val) +{ + int ret, tries; + u8 buf[8]; + u8 status; + + /* + * Safely access wide registers using mailbox method to prevent + * risking conflict with Aries firmware; otherwise fallback to + * legacy, less secure method. + */ + if (data->mm_wide_reg_access) { + buf[0] = address & 0xff; + buf[1] = (address >> 8) & 0xff; + buf[2] = (address >> 16) & 0x1; + ret = pt5161l_write_block_data( + data, ARIES_MM_ASSIST_SPARE_0_OFFSET, 3, buf); + if (ret) + return ret; + + /* Set command based on width */ + switch (width) { + case 2: + buf[0] = ARIES_MM_RD_WIDE_REG_2B; + break; + case 3: + buf[0] = ARIES_MM_RD_WIDE_REG_3B; + break; + case 4: + buf[0] = ARIES_MM_RD_WIDE_REG_4B; + break; + case 5: + buf[0] = ARIES_MM_RD_WIDE_REG_5B; + break; + default: + return -EINVAL; + } + ret = pt5161l_write_block_data(data, ARIES_MM_ASSIST_CMD_OFFSET, + 1, buf); + if (ret) + return ret; + + status = 0xff; + for (tries = 0; tries < 100; tries++) { + ret = pt5161l_read_block_data( + data, ARIES_MM_ASSIST_CMD_OFFSET, 1, &status); + if (ret) + return ret; + + if (status == 0) + break; + + usleep_range(ARIES_MM_STATUS_TIME, + ARIES_MM_STATUS_TIME + 1000); + } + if (status != 0) + return -ETIMEDOUT; + + ret = pt5161l_read_block_data( + data, ARIES_MM_ASSIST_SPARE_3_OFFSET, width, val); + if (ret) + return ret; + } else { + return pt5161l_read_block_data(data, address, width, val); + } + + return 0; +} + +/* + * Read multiple (up to eight) data bytes from micro SRAM over I2C + */ +static int +pt5161l_read_block_data_main_micro_indirect(struct pt5161l_data *data, + u32 address, u8 len, u8 *val) +{ + int ret, tries; + u8 buf[8]; + u8 i, status; + u32 uind_offs = ARIES_MM_ASSIST_REG_ADDR_OFFSET; + u32 eeprom_base, eeprom_addr; + + /* No multi-byte indirect support here. Hence read a byte at a time */ + eeprom_base = address - AL_MAIN_SRAM_DMEM_OFFSET; + for (i = 0; i < len; i++) { + eeprom_addr = eeprom_base + i; + buf[0] = eeprom_addr & 0xff; + buf[1] = (eeprom_addr >> 8) & 0xff; + buf[2] = (eeprom_addr >> 16) & 0xff; + ret = pt5161l_write_block_data(data, uind_offs, 3, buf); + if (ret) + return ret; + + buf[0] = AL_TG_RD_LOC_IND_SRAM; + ret = pt5161l_write_block_data(data, uind_offs + 4, 1, buf); + if (ret) + return ret; + + status = 0xff; + for (tries = 0; tries < 255; tries++) { + ret = pt5161l_read_block_data(data, uind_offs + 4, 1, + &status); + if (ret) + return ret; + + if (status == 0) + break; + } + if (status != 0) + return -ETIMEDOUT; + + ret = pt5161l_read_block_data(data, uind_offs + 3, 1, buf); + if (ret) + return ret; + + val[i] = buf[0]; + } + + return 0; +} + +/* + * Check firmware load status + */ +static int pt5161l_fw_load_check(struct pt5161l_data *data) +{ + int ret; + u8 buf[8]; + + ret = pt5161l_read_block_data(data, ARIES_CODE_LOAD_REG, 1, buf); + if (ret) + return ret; + + if (buf[0] < ARIES_LOAD_CODE) { + dev_dbg(&data->client->dev, + "Code Load reg unexpected. Not all modules are loaded %x\n", + buf[0]); + data->code_load_okay = false; + } else { + data->code_load_okay = true; + } + + return 0; +} + +/* + * Check main micro heartbeat + */ +static int pt5161l_heartbeat_check(struct pt5161l_data *data) +{ + int ret, tries; + u8 buf[8]; + u8 heartbeat; + bool hb_changed = false; + + ret = pt5161l_read_block_data(data, ARIES_MM_HEARTBEAT_ADDR, 1, buf); + if (ret) + return ret; + + heartbeat = buf[0]; + for (tries = 0; tries < 100; tries++) { + ret = pt5161l_read_block_data(data, ARIES_MM_HEARTBEAT_ADDR, 1, + buf); + if (ret) + return ret; + + if (buf[0] != heartbeat) { + hb_changed = true; + break; + } + } + data->mm_heartbeat_okay = hb_changed; + + return 0; +} + +/* + * Check the status of firmware + */ +static int pt5161l_fwsts_check(struct pt5161l_data *data) +{ + int ret; + u8 buf[8]; + u8 major = 0, minor = 0; + u16 build = 0; + + ret = pt5161l_fw_load_check(data); + if (ret) + return ret; + + ret = pt5161l_heartbeat_check(data); + if (ret) + return ret; + + if (data->code_load_okay && data->mm_heartbeat_okay) { + ret = pt5161l_read_block_data_main_micro_indirect( + data, + ARIES_MAIN_MICRO_FW_INFO + ARIES_MM_FW_VERSION_MAJOR, 1, + &major); + if (ret) + return ret; + + ret = pt5161l_read_block_data_main_micro_indirect( + data, + ARIES_MAIN_MICRO_FW_INFO + ARIES_MM_FW_VERSION_MINOR, 1, + &minor); + if (ret) + return ret; + + ret = pt5161l_read_block_data_main_micro_indirect( + data, + ARIES_MAIN_MICRO_FW_INFO + ARIES_MM_FW_VERSION_BUILD, 2, + buf); + if (ret) + return ret; + build = buf[1] << 8 | buf[0]; + } + data->fw_ver.major = major; + data->fw_ver.minor = minor; + data->fw_ver.build = build; + + return 0; +} + +static int pt5161l_fw_is_at_least(struct pt5161l_data *data, u8 major, u8 minor, + u16 build) +{ + u32 ver = major << 24 | minor << 16 | build; + u32 curr_ver = data->fw_ver.major << 24 | data->fw_ver.minor << 16 | + data->fw_ver.build; + + if (curr_ver >= ver) + return true; + + return false; +} + +static int pt5161l_init_dev(struct pt5161l_data *data) +{ + int ret; + + mutex_lock(&data->lock); + ret = pt5161l_fwsts_check(data); + mutex_unlock(&data->lock); + if (ret) + return ret; + + /* Firmware 2.2.0 enables safe access to wide registers */ + if (pt5161l_fw_is_at_least(data, 2, 2, 0)) + data->mm_wide_reg_access = true; + + data->init_done = true; + + return 0; +} + +static int pt5161l_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct pt5161l_data *data = dev_get_drvdata(dev); + int ret; + u8 buf[8]; + long adc_code; + + switch (attr) { + case hwmon_temp_input: + if (!data->init_done) { + ret = pt5161l_init_dev(data); + if (ret) + return ret; + } + + mutex_lock(&data->lock); + ret = pt5161l_read_wide_reg( + data, ARIES_CURRENT_AVG_TEMP_ADC_CSR, 4, buf); + mutex_unlock(&data->lock); + if (ret) { + dev_dbg(dev, "Read adc_code failed %d\n", ret); + return ret; + } + + adc_code = buf[3] << 24 | buf[2] << 16 | buf[1] << 8 | buf[0]; + if (adc_code == 0 || adc_code >= 0x3ff) { + dev_dbg(dev, "Invalid adc_code %lx\n", adc_code); + return -EIO; + } + + *val = 110000 + + ((adc_code - (ARIES_TEMP_CAL_CODE_DEFAULT + 250)) * + -320); + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static umode_t pt5161l_is_visible(const void *data, + enum hwmon_sensor_types type, u32 attr, + int channel) +{ + switch (attr) { + case hwmon_temp_input: + return 0444; + default: + break; + } + + return 0; +} + +static const struct hwmon_channel_info *pt5161l_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), + NULL +}; + +static const struct hwmon_ops pt5161l_hwmon_ops = { + .is_visible = pt5161l_is_visible, + .read = pt5161l_read, +}; + +static const struct hwmon_chip_info pt5161l_chip_info = { + .ops = &pt5161l_hwmon_ops, + .info = pt5161l_info, +}; + +static ssize_t pt5161l_debugfs_read_fw_ver(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct pt5161l_data *data = file->private_data; + int ret; + char ver[32]; + + mutex_lock(&data->lock); + ret = pt5161l_fwsts_check(data); + mutex_unlock(&data->lock); + if (ret) + return ret; + + ret = snprintf(ver, sizeof(ver), "%u.%u.%u\n", data->fw_ver.major, + data->fw_ver.minor, data->fw_ver.build); + if (ret < 0) + return ret; + + return simple_read_from_buffer(buf, count, ppos, ver, ret + 1); +} + +static const struct file_operations pt5161l_debugfs_ops_fw_ver = { + .read = pt5161l_debugfs_read_fw_ver, + .open = simple_open, +}; + +static ssize_t pt5161l_debugfs_read_fw_load_sts(struct file *file, + char __user *buf, size_t count, + loff_t *ppos) +{ + struct pt5161l_data *data = file->private_data; + int ret; + bool status = false; + char health[16]; + + mutex_lock(&data->lock); + ret = pt5161l_fw_load_check(data); + mutex_unlock(&data->lock); + if (ret == 0) + status = data->code_load_okay; + + ret = snprintf(health, sizeof(health), "%s\n", + status ? "normal" : "abnormal"); + if (ret < 0) + return ret; + + return simple_read_from_buffer(buf, count, ppos, health, ret + 1); +} + +static const struct file_operations pt5161l_debugfs_ops_fw_load_sts = { + .read = pt5161l_debugfs_read_fw_load_sts, + .open = simple_open, +}; + +static ssize_t pt5161l_debugfs_read_hb_sts(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct pt5161l_data *data = file->private_data; + int ret; + bool status = false; + char health[16]; + + mutex_lock(&data->lock); + ret = pt5161l_heartbeat_check(data); + mutex_unlock(&data->lock); + if (ret == 0) + status = data->mm_heartbeat_okay; + + ret = snprintf(health, sizeof(health), "%s\n", + status ? "normal" : "abnormal"); + if (ret < 0) + return ret; + + return simple_read_from_buffer(buf, count, ppos, health, ret + 1); +} + +static const struct file_operations pt5161l_debugfs_ops_hb_sts = { + .read = pt5161l_debugfs_read_hb_sts, + .open = simple_open, +}; + +static int pt5161l_init_debugfs(struct pt5161l_data *data) +{ + data->debugfs = debugfs_create_dir(dev_name(&data->client->dev), + pt5161l_debugfs_dir); + + debugfs_create_file("fw_ver", 0444, data->debugfs, data, + &pt5161l_debugfs_ops_fw_ver); + + debugfs_create_file("fw_load_status", 0444, data->debugfs, data, + &pt5161l_debugfs_ops_fw_load_sts); + + debugfs_create_file("heartbeat_status", 0444, data->debugfs, data, + &pt5161l_debugfs_ops_hb_sts); + + return 0; +} + +static int pt5161l_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct pt5161l_data *data; + + data = devm_kzalloc(dev, sizeof(struct pt5161l_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client = client; + mutex_init(&data->lock); + pt5161l_init_dev(data); + dev_set_drvdata(dev, data); + + hwmon_dev = devm_hwmon_device_register_with_info( + dev, client->name, data, &pt5161l_chip_info, NULL); + + pt5161l_init_debugfs(data); + + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static void pt5161l_remove(struct i2c_client *client) +{ + struct pt5161l_data *data = i2c_get_clientdata(client); + + debugfs_remove_recursive(data->debugfs); +} + +static const struct of_device_id __maybe_unused pt5161l_of_match[] = { + { .compatible = "asteralabs,pt5161l" }, + {}, +}; +MODULE_DEVICE_TABLE(of, pt5161l_of_match); + +static const struct acpi_device_id __maybe_unused pt5161l_acpi_match[] = { + { "PT5161L", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, pt5161l_acpi_match); + +static const struct i2c_device_id pt5161l_id[] = { + { "pt5161l", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, pt5161l_id); + +static struct i2c_driver pt5161l_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "pt5161l", + .of_match_table = of_match_ptr(pt5161l_of_match), + .acpi_match_table = ACPI_PTR(pt5161l_acpi_match), + }, + .probe = pt5161l_probe, + .remove = pt5161l_remove, + .id_table = pt5161l_id, +}; + +static int __init pt5161l_init(void) +{ + pt5161l_debugfs_dir = debugfs_create_dir("pt5161l", NULL); + return i2c_add_driver(&pt5161l_driver); +} + +static void __exit pt5161l_exit(void) +{ + i2c_del_driver(&pt5161l_driver); + debugfs_remove_recursive(pt5161l_debugfs_dir); +} + +module_init(pt5161l_init); +module_exit(pt5161l_exit); + +MODULE_AUTHOR("Cosmo Chou "); +MODULE_DESCRIPTION("Hwmon driver for Astera Labs Aries PCIe retimer"); +MODULE_LICENSE("GPL");