From patchwork Wed Mar 12 15:46:00 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Diogo Ivo X-Patchwork-Id: 14013672 Received: from mta-65-227.siemens.flowmailer.net (mta-65-227.siemens.flowmailer.net [185.136.65.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4EB372566E1 for ; Wed, 12 Mar 2025 15:56:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.136.65.227 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741794982; cv=none; b=nY1VHlsmlbrB9lXpuG0MO/qgtuCXWVy5zUuK7iUfWy3gMOR/QP7JjVlCYRc3gNnDHwwbg5dTfhZK/O2fC+H4lStLTFYdJAHqihLsAZytoA4OMZL7o4uhCKLMl7/6lj+6ABLt4CKnFpUozzQV8beKaE0GKalrScCP6kFItN8D8Go= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741794982; c=relaxed/simple; bh=/tUeJxexUe7TBjTwiMUFAxVHNQcz9K5ss0oO62XNxrU=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=ehAfLdFiI7On76uZ65HlddNv7jTrQyiND5X6T36KQk6Hs+R62gjgLl5vIfctF7EckJzuNBX7AZIKxWbtGA34ij/vvVe7skl8+A3xguRJv5p6wSq4Yn6+IZ50dfyxPPZBh6OLAdqMNrzMzjDSo/97PjFm0d/0yUtXmwYxoXzKBKA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=siemens.com; spf=pass smtp.mailfrom=rts-flowmailer.siemens.com; dkim=pass (2048-bit key) header.d=siemens.com header.i=diogo.ivo@siemens.com header.b=TmfXhxUl; arc=none smtp.client-ip=185.136.65.227 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=siemens.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rts-flowmailer.siemens.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=siemens.com header.i=diogo.ivo@siemens.com header.b="TmfXhxUl" Received: by mta-65-227.siemens.flowmailer.net with ESMTPSA id 20250312154605efc58047499d392eea for ; Wed, 12 Mar 2025 16:46:05 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm1; d=siemens.com; i=diogo.ivo@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc; bh=rFXi/EOvlI1q63UTtN3+2lWAAJojD4xng4L7RXQth+s=; b=TmfXhxUlb5zlX/dhogvn+w+uyGg11Igc3cdTjsIYm41TmFHuAVOsLPoYu2dzPWCQ1hnfs5 +0L7QFOlT9aTIBIeI8UBliPigCpQxGPHDSOJOgSG5vElYzqj6IxucRvrITgi4KXe3ybvWh2/ aOlTBD5hzWTvOAiTVIw3BrLz2R4xWLqVCDSYa6crwk6Y/CGk/4RzJQ7oJkU8EbOHveR6J1IZ +imxC/YnCqa1zQty4KBnOTXqZ1tfEOXtHCgtFCZUtU+a/tlFp4CEa4b1jYXpcJAsVsLtfDjR gpzQ8mORHQReFMmDjTd+M3Ny68OOH/4WUIYJNHiUj5T3iBqAB3zzHc4Q==; From: Diogo Ivo Subject: [PATCH v2 0/2] Add driver for Intel Over-Clocking Watchdog Date: Wed, 12 Mar 2025 15:46:00 +0000 Message-Id: <20250312-ivo-intel_oc_wdt-v2-0-52d09738cd0b@siemens.com> Precedence: bulk X-Mailing-List: linux-watchdog@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIADis0WcC/2WNwQ7CIBAFf6XZsxigtFVP/odpGgKL3cRCAw1qm v67WI8eZ5I3b4WEkTDBpVohYqZEwReQhwrMqP0dGdnCILlsuJQdoxwY+QUfQzDD0y6s0+pUa2V bzRWU2RzR0WtP3vrCI6UlxPf+kMXX/mK1EP+xLJhgzqqOq5bbs2uuiXBCn44mTNBv2/YB0wf+v rIAAAA= X-Change-ID: 20250227-ivo-intel_oc_wdt-7a483a4d6a04 To: "Rafael J. Wysocki" , Len Brown , Wim Van Sebroeck , Guenter Roeck Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-watchdog@vger.kernel.org, jan.kiszka@siemens.com, benedikt.niedermayr@siemens.com, Diogo Ivo X-Developer-Signature: v=1; a=ed25519-sha256; t=1741794365; l=1801; i=diogo.ivo@siemens.com; s=20240529; h=from:subject:message-id; bh=/tUeJxexUe7TBjTwiMUFAxVHNQcz9K5ss0oO62XNxrU=; b=jjgZeYqbuCnZ8jjOQM3TswX/VHg6IR2spnqrZYd/n1yvUzhlZYhQKegcofEklo5mqLrNlVZVd Fba/SDF0avkCz7sY9Ovixq9Y9TF/BpheaOButsaFuMsR7muPkVct59q X-Developer-Key: i=diogo.ivo@siemens.com; a=ed25519; pk=BRGXhMh1q5KDlZ9y2B8SodFFY8FGupal+NMtJPwRpUQ= X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-1328357:519-21489:flowmailer This series adds a driver for the Intel Over-Clocking Watchdog found in the Intel Platform Controller Hub (PCH). This watchdog is controlled via a simple single-register interface and would otherwise be standard except for the presence of a LOCK bit that can only be set once per power cycle, needing extra handling around it. Due to the way these devices are described in ACPI tables with both the generic PNP0C02 CID and a more detailed ACPI HID we also need to add their HIDs to the list of known non-PNP devices. As there are several HIDs for what seems to be essentially the same hardware but I don't know all the possible HIDs this series does not include an exhaustive list of all such HIDs, only those that I could personally test. Signed-off-by: Diogo Ivo --- Changes in v2: - Split v1 into two patches, adding the ACPI IDs in a separate patch - Initialize hearbeat module parameter to zero - Clarify wording around lock handling - Properly print resource with %pR when failing to obtain it - Enable compile testing and add dependency on HAS_IOPORT - Drop unneeded ACPI_PTR() and MODULE_ALIAS() - Link to v1: https://lore.kernel.org/r/20250311-ivo-intel_oc_wdt-v1-1-fd470460d9f5@siemens.com --- Diogo Ivo (2): watchdog: Add driver for Intel OC WDT ACPI: PNP: Add Intel OC Watchdog IDs to non-PNP device list drivers/acpi/acpi_pnp.c | 2 + drivers/watchdog/Kconfig | 11 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/intel_oc_wdt.c | 233 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 247 insertions(+) --- base-commit: 4d872d51bc9d7b899c1f61534e3dbde72613f627 change-id: 20250227-ivo-intel_oc_wdt-7a483a4d6a04 Best regards,