From patchwork Mon Dec 16 09:15:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lifeng Zheng X-Patchwork-Id: 851478 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (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 B6E1C20101E; Mon, 16 Dec 2024 09:16:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734340576; cv=none; b=PwZMPV/9JiLNcrT1is9QPwd5NQ7F7RQc9tnPAmIdT6jD//5ig3dunMZEMHK2HqEk/qmbozvTTj/srHy0Ik27EnHEAHVpdvTKom3lJCvXNMRfQHu9sw1s7KKWkLsjagReHBSaWIB3TIW9/jRjjunTEaaqpFIqqoxqWrA+XvCi6hk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734340576; c=relaxed/simple; bh=aX4HqyGzLzka94xiZImooBUJwmdy7RYEVbUgjk6BaS4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=tMkjzFxv4JeDam1VgeWGjLq8acAYCXVMVIrhgcgR0GNyKc5EUg23OKw/NfJ5bR1AfTcMV31DlLSgR18CcPUTEfgMxbY5vsxpsfQ2pJ0cxcWytZpw32PUZJx4+BEVgk5GiC8TlNceXkfhnAhdTDxYPWElZVm/CXoT/7ysqvcVCf8= 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=45.249.212.187 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 [172.19.88.194]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4YBZ4H08G0zhZWW; Mon, 16 Dec 2024 17:13:35 +0800 (CST) Received: from kwepemh100008.china.huawei.com (unknown [7.202.181.93]) by mail.maildlp.com (Postfix) with ESMTPS id F361F1400D5; Mon, 16 Dec 2024 17:16:04 +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; Mon, 16 Dec 2024 17:16:04 +0800 From: Lifeng Zheng To: , , , CC: , , , , , , , , , , , , Subject: [PATCH v3 0/4] Support for autonomous selection in cppc_cpufreq Date: Mon, 16 Dec 2024 17:15:59 +0800 Message-ID: <20241216091603.1247644-1-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: dggems705-chm.china.huawei.com (10.3.19.182) 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 1-2 refactor out the general CPPC register get and set functions in cppc_acpi.c - patches 3-4 expose sysfs files for users to control CPPC autonomous selection when supported Since Pierre and me have discussed about whether or not to show auto_act_window and energy_perf when auto_select is disabled. It seems like whether to show these two files has their own points. We'd like to ask for some advice. Relevant discussion: [1] https://lore.kernel.org/all/522721da-1a5c-439c-96a8-d0300dd0f906@huawei.com/ Change since v2: - 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 Change since v1: - fix some incorrect placeholder - change kstrtoul to kstrtobool in store_auto_select Lifeng Zheng (4): ACPI: CPPC: Add cppc_get_reg_val and cppc_set_reg_val function ACPI: CPPC: Refactor register value get and set ABIs ACPI: CPPC: Add autonomous selection ABIs cpufreq: CPPC: Support for autonomous selection in cppc_cpufreq .../ABI/testing/sysfs-devices-system-cpu | 54 ++++ drivers/acpi/cppc_acpi.c | 266 +++++++++--------- drivers/cpufreq/cppc_cpufreq.c | 129 +++++++++ include/acpi/cppc_acpi.h | 29 ++ 4 files changed, 347 insertions(+), 131 deletions(-)