From patchwork Thu Feb 6 13:14:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lifeng Zheng X-Patchwork-Id: 863319 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 6832222F391; Thu, 6 Feb 2025 13:14:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738847677; cv=none; b=MVH0xCu07awDc4pi00l/1B9Dzr7qhU8cayezBMtYQiaBX7F+wGoKpxMNJUNTT/MzNxZGR2j37K2yme3dRZn1prB1pRemjTsarQVfzLETdwZuifwsUztJv3xWCga/BXQNxAULpHVFZSyTwuO3RyuE1+qcnOTg2qfRNBENOcRV0Ds= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738847677; c=relaxed/simple; bh=vHAGrAf4YWkDgVgUsCR2p/jiGWJqleALHntTmxeHJTY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=YwiByEKDqpCnmH/yVWs1TRSmo6Su3XFfAaRyZcUhvqYW7FmM33YD0sfI9A//hdZekNxlNGqGLCis6gxxL+qzkj1qqsACCY91htzWA5kAKSfyTHoTGs9U+kGUFmEnPXD57MipwD4zYcs3+fD+CWAbU3Q37ODbXwCpRIF1QSGKjN4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Ypct35Bymz2Fcxv; Thu, 6 Feb 2025 21:10:51 +0800 (CST) Received: from kwepemh100008.china.huawei.com (unknown [7.202.181.93]) by mail.maildlp.com (Postfix) with ESMTPS id 19DC81A0188; Thu, 6 Feb 2025 21:14:30 +0800 (CST) Received: from localhost.huawei.com (10.50.165.33) by kwepemh100008.china.huawei.com (7.202.181.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 6 Feb 2025 21:14:29 +0800 From: Lifeng Zheng To: , , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 0/8] Support for autonomous selection in cppc_cpufreq Date: Thu, 6 Feb 2025 21:14:20 +0800 Message-ID: <20250206131428.3261578-1-zhenglifeng1@huawei.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100008.china.huawei.com (7.202.181.93) Add sysfs interfaces for CPPC autonomous selection in the cppc_cpufreq driver. The patch series is organized in two parts: - patch 1-5 refactor out the general CPPC register get and set functions in cppc_acpi.c - patches 6-8 expose sysfs files for users to control CPPC autonomous selection when supported Changelog: v5: - add more explanation to the commit logs and comments - change REG_OPTIONAL from bin to hex - split patch 2 into 3 smaller patches - remove CPPC_REG_VAL_READ() and CPPC_REG_VAL_WRITE() macros - move the modification part in patch 5 into a separate patch - rename the sysfs file from "energy_perf" to energy_performance_preference_val v4: - add REG_OPTIONAL and IS_OPTIONAL_CPC_REG to judge if a cpc register is an optional one - check whether the register is optional before CPC_SUPPORTED check in cppc_get_reg_val() and cppc_set_reg_val() - check the register's type in cppc_set_reg_val() - add macros to generally implement registers getting and setting functions - move some logic codes from cppc_cpufreq.c to cppc_acpi.c - replace cppc_get_auto_sel_caps() by cppc_get_auto_sel() v3: - change cppc_get_reg() and cppc_set_reg() name to cppc_get_reg_val() and cppc_set_reg_val() - extract cppc_get_reg_val_in_pcc() and cppc_set_reg_val_in_pcc() - return the result of cpc_read() in cppc_get_reg_val() - add pr_debug() in cppc_get_reg_val_in_pcc() when pcc_ss_id < 0 - rename 'cpunum' to 'cpu' in cppc_get_reg_val() - move some macros from drivers/cpufreq/cppc_cpufreq.c to include/acpi/cppc_acpi.h with a CPPC_XXX prefix v2: - fix some incorrect placeholder - change kstrtoul to kstrtobool in store_auto_select Lifeng Zheng (8): ACPI: CPPC: Add IS_OPTIONAL_CPC_REG macro to judge if a cpc_reg is optional ACPI: CPPC: Optimize cppc_get_perf() ACPI: CPPC: Rename cppc_get_perf() to cppc_get_reg_val() ACPI: CPPC: Add cppc_set_reg_val() ACPI: CPPC: Refactor register value get and set ABIs ACPI: CPPC: Modify cppc_get_auto_sel_caps() to cppc_get_auto_sel() ACPI: CPPC: Add three functions related to autonomous selection cpufreq: CPPC: Support for autonomous selection in cppc_cpufreq .../ABI/testing/sysfs-devices-system-cpu | 54 ++++ drivers/acpi/cppc_acpi.c | 303 +++++++++++------- drivers/cpufreq/amd-pstate.c | 3 +- drivers/cpufreq/cppc_cpufreq.c | 109 +++++++ include/acpi/cppc_acpi.h | 30 +- 5 files changed, 372 insertions(+), 127 deletions(-)