From patchwork Thu May 15 21:19:45 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 890801 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CF4F12882B7; Thu, 15 May 2025 21:20:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747344014; cv=none; b=TducJFfq5zZ9dGLtwd/pT8096SQdgKMlRks14p+MndjUHL4O7abyPy81tC8K8gnFMRieJNkbnLh0kJEZNdLobo8Pp14462vKnaqALfM3cgB+1dcXj5MFvVELqvFg87ZYiJ+zwhNNGCM9Zp5IbSwzzmO/LwVVkAgnJIqlVADS5AU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747344014; c=relaxed/simple; bh=wxhYEGNpiWIhzH7Mo/pycoZJIumcH7mRdwRvDFsadCM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ez2N13uBjQlc7TMZjP0rAD2EvMBE97FY+Ms6Vjovrt2u3zMCeoBy59hPn+KJf0I5bYIqTWQ+Uwxgd7wxtcMu1ZcwSGVPb4cY9wkouwTPGNoJUU26U+ri4GYDU0XFM6i3ooGuAAuBAD2Ks/+JeNj7wEPYx4TuO1ZlyBV+oykX+iU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TxkWCYLs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TxkWCYLs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA966C4CEED; Thu, 15 May 2025 21:20:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747344014; bh=wxhYEGNpiWIhzH7Mo/pycoZJIumcH7mRdwRvDFsadCM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TxkWCYLsgHuqMVLL5ezLFOw6ZuF2qHk5Cah2jQYg0g1ulaat/3p5LWEfhPS4nqQey bfKKSFbn4OFs15nZeBOyT5PWzDD+4IMbO0gqk0b3VxIHcHKXvjOe6gmnlUXx4vavwG eu5A30n1x0jzTI/vkef9gbmZ0NzFawLzC6Yre47Ps1lEn82Mzw9zXj6lsijo/H/AsK f1VE90SNEUox3Ghosr7CpgsYuI/X5BHndxbRpTFj7v1BQL79OdreaL6q4kbmUx54Q3 tkgmRl6WFgtwF3hnfKMQRH3gMShIIxdmiV1kaLJ7pZuMLn1PFWOQw0Hj2qVrd4NT3A QyrnBLv7M1QrA== From: Mario Limonciello To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= Cc: Mario Limonciello , Perry Yuan , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), "H . Peter Anvin" , Jonathan Corbet , Huang Rui , "Gautham R . Shenoy" , "Rafael J . Wysocki" , Viresh Kumar , platform-driver-x86@vger.kernel.org (open list:AMD HETERO CORE HARDWARE FEEDBACK DRIVER), linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), linux-doc@vger.kernel.org (open list:DOCUMENTATION), linux-pm@vger.kernel.org (open list:AMD PSTATE DRIVER), Perry Yuan Subject: [PATCH v10 08/13] platform/x86: hfi: add power management callback Date: Thu, 15 May 2025 16:19:45 -0500 Message-ID: <20250515211950.3102922-9-superm1@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250515211950.3102922-1-superm1@kernel.org> References: <20250515211950.3102922-1-superm1@kernel.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Perry Yuan Introduces power management callbacks for the `amd_hfi` driver. Specifically, the `suspend` and `resume` callbacks have been added to handle the necessary operations during system low power states and wake-up. Reviewed-by: Gautham R. Shenoy Signed-off-by: Perry Yuan Co-developed-by: Mario Limonciello Signed-off-by: Mario Limonciello --- drivers/platform/x86/amd/hfi/hfi.c | 33 ++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 1472214dc809f..921e07acf2ff1 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -384,6 +384,38 @@ static int amd_hfi_metadata_parser(struct platform_device *pdev, return ret; } +static int amd_hfi_pm_resume(struct device *dev) +{ + int ret, cpu; + + for_each_online_cpu(cpu) { + ret = amd_hfi_set_state(cpu, true); + if (ret < 0) { + dev_err(dev, "failed to enable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static int amd_hfi_pm_suspend(struct device *dev) +{ + int ret, cpu; + + for_each_online_cpu(cpu) { + ret = amd_hfi_set_state(cpu, false); + if (ret < 0) { + dev_err(dev, "failed to disable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(amd_hfi_pm_ops, amd_hfi_pm_suspend, amd_hfi_pm_resume); + static const struct acpi_device_id amd_hfi_platform_match[] = { {"AMDI0104", 0}, { } @@ -433,6 +465,7 @@ static struct platform_driver amd_hfi_driver = { .driver = { .name = AMD_HFI_DRIVER, .owner = THIS_MODULE, + .pm = &amd_hfi_pm_ops, .acpi_match_table = ACPI_PTR(amd_hfi_platform_match), }, .probe = amd_hfi_probe,