From patchwork Thu Apr 11 00:31:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajat Jain X-Patchwork-Id: 10894921 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 90EEC1708 for ; Thu, 11 Apr 2019 00:31:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7D83028B47 for ; Thu, 11 Apr 2019 00:31:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7085C28B79; Thu, 11 Apr 2019 00:31:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0140528B47 for ; Thu, 11 Apr 2019 00:31:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726854AbfDKAbd (ORCPT ); Wed, 10 Apr 2019 20:31:33 -0400 Received: from mail-qt1-f201.google.com ([209.85.160.201]:55082 "EHLO mail-qt1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726812AbfDKAbd (ORCPT ); Wed, 10 Apr 2019 20:31:33 -0400 Received: by mail-qt1-f201.google.com with SMTP id p26so3955170qtq.21 for ; Wed, 10 Apr 2019 17:31:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=xjs1svdJGaWis4ufgIMZP5hXjuYMKhCw0cBzYAGLyMA=; b=agUBoBwBj4xqdTmLQHczdAFX/old7ot4YrWZUAHLbg8eEgmC+7vsSCHkc6jx+SmcFp U4+U0MKTAeZkSbCHMiW07/VaaqRIUsgfnojKN2TaLVcT+8pK+tGqpOKm3tt3xbkCd4Xp av5eep0mJjx85gltV3QaDlSQ5SMrwzywohDzPfZVIiy+eqApQp8nC53z0p+CAUcRzhs5 IoUl7eyw1pno1LNK6z6wUpMN6kkMfmqk3z6uqoIPTu/cxYVixZFComsUKS6l2/bXrI8K GL7pJCxckG4fcNFys26FdmqEOHXcn7uDl6C0Ec+wjF7VYEU4hYQt6DkIDGHRP79OSbhx L/zw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=xjs1svdJGaWis4ufgIMZP5hXjuYMKhCw0cBzYAGLyMA=; b=co2LAxoGL05clyz97saXNaQ53ar7Q1SKr4Tbghbi/FMkz5Z6RkFJPsaDu6mZjgV05Y 8Vw7tbEJBwpyBtOomP+JKIuyNNPZgLHwXjAcyGiSt7yMY337eWdh+WCnxU8HlfuiY3nD pBb8rYWtRsPPcDixz+mLjM+DiUlog3q6XZWxpcAMO3TCtvXTZk2jOwJMnh+0g2glPFmC PKVKseypTcRRn8SoG7TP+TQ5an0hqSNAeC0fG1jBQ05ooRtdkYc1mRpUZA0z1LNnCPFQ xtbbPAAJqmi2PVmc7NziZFvfhXhJMUWwl7n1Hjt4nUDrit1Pcfc33GB5ybeuztF1xeXV SIxg== X-Gm-Message-State: APjAAAXhZ6oDKUiIYO6CTEi3pJNEw+VfzNOkfJUcxeM0ss8r05j8CYOk MjYwuv12XCA2udmZCTOMjQBy04FuXAqR X-Google-Smtp-Source: APXvYqzwWKR48+ul3nTqlDPsoRiLt2SL+DD/vCMf9CWovKHCsFVWD7qZp9WBHS01DVP65LeQnTjHo69GKFhh X-Received: by 2002:ac8:3623:: with SMTP id m32mr5819876qtb.6.1554942692263; Wed, 10 Apr 2019 17:31:32 -0700 (PDT) Date: Wed, 10 Apr 2019 17:31:07 -0700 In-Reply-To: <20190411003107.52044-1-rajatja@google.com> Message-Id: <20190411003107.52044-3-rajatja@google.com> Mime-Version: 1.0 References: <20190313222124.229371-1-rajatja@google.com> <20190411003107.52044-1-rajatja@google.com> X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog Subject: [PATCH v4 3/3] platform/x86: intel_pmc_core: Instantiate pmc_core device on legacy platforms From: Rajat Jain To: Rajneesh Bhardwaj , Vishwanath Somayaji , Darren Hart , Andy Shevchenko , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Rafael J , Srinivas Pandruvada Cc: Rajat Jain , furquan@google.com, evgreen@google.com, rajatxjain@gmail.com Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add code to instantiate the pmc_core platform device and thus attach to the driver, if the ACPI device for the same ("INT33A1") is not present in a system where it should be. This was discussed here: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1966991.html Change-Id: I62e0909b010c13614feec36e2c72aed984b61734 Signed-off-by: Rajat Jain --- v4: Rename file, remove dummy arg, 1 conditional per if statement, simplify init / exit calls.. v3: (first version of *this* patch -to go with rest of v3 patchset) v2: (does not exist) v1: (does not exist) drivers/platform/x86/Makefile | 2 +- .../platform/x86/intel_pmc_core_plat_drv.c | 60 +++++++++++++++++++ 2 files changed, 61 insertions(+), 1 deletion(-) create mode 100644 drivers/platform/x86/intel_pmc_core_plat_drv.c diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 86cb76677bc8..7041a88c34c7 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -89,7 +89,7 @@ obj-$(CONFIG_INTEL_BXTWC_PMIC_TMU) += intel_bxtwc_tmu.o obj-$(CONFIG_INTEL_TELEMETRY) += intel_telemetry_core.o \ intel_telemetry_pltdrv.o \ intel_telemetry_debugfs.o -obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core.o +obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core.o intel_pmc_core_plat_drv.o obj-$(CONFIG_PMC_ATOM) += pmc_atom.o obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o obj-$(CONFIG_INTEL_TURBO_MAX_3) += intel_turbo_max_3.o diff --git a/drivers/platform/x86/intel_pmc_core_plat_drv.c b/drivers/platform/x86/intel_pmc_core_plat_drv.c new file mode 100644 index 000000000000..7f5af5bd7f1f --- /dev/null +++ b/drivers/platform/x86/intel_pmc_core_plat_drv.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Intel PMC Core platform init + * Copyright (c) 2019, Google Inc. + * Author - Rajat Jain + * + * This code instantiates platform devices for intel_pmc_core driver, only + * on supported platforms that may not have the ACPI devices in the ACPI tables. + * No new platforms should be added here, because we expect that new platforms + * should all have the ACPI device, which is the preferred way of enumeration. + */ + +#include +#include + +#include +#include + +static struct platform_device pmc_core_device = { + .name = "pmc_core", +}; + +/* + * intel_pmc_core_platform_ids is the list of platforms where we want to + * instantiate the platform_device if not already instantiated. This is + * different than intel_pmc_core_ids in intel_pmc_core.c which is the + * list of platforms that the driver supports for pmc_core device. The + * other list may grow, but this list should not. + */ +static const struct x86_cpu_id intel_pmc_core_platform_ids[] = { + INTEL_CPU_FAM6(SKYLAKE_MOBILE, pmc_core_device), + INTEL_CPU_FAM6(SKYLAKE_DESKTOP, pmc_core_device), + INTEL_CPU_FAM6(KABYLAKE_MOBILE, pmc_core_device), + INTEL_CPU_FAM6(KABYLAKE_DESKTOP, pmc_core_device), + INTEL_CPU_FAM6(CANNONLAKE_MOBILE, pmc_core_device), + INTEL_CPU_FAM6(ICELAKE_MOBILE, pmc_core_device), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, intel_pmc_core_platform_ids); + +static int __init pmc_core_platform_init(void) +{ + /* Skip creating the platform device if ACPI already has a device */ + if (acpi_dev_present("INT33A1", NULL, -1)) + return -ENODEV; + + if (!x86_match_cpu(intel_pmc_core_platform_ids)) + return -ENODEV; + + return platform_device_register(&pmc_core_device); +} + +static void __exit pmc_core_platform_exit(void) +{ + platform_device_unregister(&pmc_core_device); +} + +module_init(pmc_core_platform_init); +module_exit(pmc_core_platform_exit);