From patchwork Tue Feb 18 19:08:17 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 13980623 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 80D07280A3B; Tue, 18 Feb 2025 19:09:07 +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=1739905747; cv=none; b=Vvgj94w2c4r83HGLL9t64zvEsrqsLyi8D6IOlQwx1Cyeh+Ntwrfcr6I6w5eTkcRicN/KuB8idMPtHOUwazDTaCeP8ATzDg3yCCI4WEQkEcnWguqxR2oRvCFOSi0lW8Qh9u4duUdTHLjNmkVJX/qcQw0juEFcFSu0u0YCEbDXpnw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739905747; c=relaxed/simple; bh=kkmiHVXfJXfM1Y0OJM/t6VFEd5Na7GfS4a+2m3iMWLg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=k+FwNq6f+z517C3HNuktTAJ2V8OHXpvo51iwtTdix80RciKTdGIcTP2y7gNvumxrmHp8EJTtpIMai1Qf1y/o22teXeD6IC2oa+90TUme156JSZZXV1i1Pbeu/oenCRrrcjxGlSBwJtPlvfZro4q8MB/hxv/ewSuIDKzEcWlcUFY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZIhAA2CC; 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="ZIhAA2CC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BE33C4CEEB; Tue, 18 Feb 2025 19:09:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739905747; bh=kkmiHVXfJXfM1Y0OJM/t6VFEd5Na7GfS4a+2m3iMWLg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZIhAA2CCktPixohzXmZW70xmnmxvwcqLXe8g27dIHBCCSxh6fbayD2QE5k+ZJcQJG y68xysEsJ42aolH8Tzz4zt5ONXz73OfVHsSPpI3j2iWowWt8W1N4noDSj7THqL1e3Y mYR4/UHNxR6YE7XBeOInMu2IRJIrVrC3zMjDGNWQqAzuOyEpC3AsmFw3RbnuRDJ5x8 OTDtpa3HDcoi2a9QKD8io4hEjiBIsnF1itijCZDug+I2SmSgib9EKR0MuqYx8s8pzr CliJELyTWSFVgHH0jVvr8VQkxwomdbeTAaG00VCbJHIgX9q6YQmoV1MIvk2Xeo68Bd U0U/5dSAggNJQ== From: Mario Limonciello To: Hans de Goede , =?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 v8 08/13] platform/x86: hfi: add power management callback Date: Tue, 18 Feb 2025 13:08:17 -0600 Message-ID: <20250218190822.1039982-9-superm1@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250218190822.1039982-1-superm1@kernel.org> References: <20250218190822.1039982-1-superm1@kernel.org> Precedence: bulk X-Mailing-List: platform-driver-x86@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 90b57175ccd97..ad93c3b5d5ddf 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -381,6 +381,38 @@ 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,