From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E512C43600 for ; Thu, 1 Apr 2021 03:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F14E61075 for ; Thu, 1 Apr 2021 03:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233362AbhDADGo (ORCPT ); Wed, 31 Mar 2021 23:06:44 -0400 Received: from mga07.intel.com ([134.134.136.100]:2838 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232565AbhDADGR (ORCPT ); Wed, 31 Mar 2021 23:06:17 -0400 IronPort-SDR: U3w7ShK+jodgrBgrV9t2FFDkrZ9+XWmj83WLaoPyuqtOjp6q7ZwXSCjv37j+Z9mTORow990I2Y fRArp4TLd6hw== X-IronPort-AV: E=McAfee;i="6000,8403,9940"; a="256124342" X-IronPort-AV: E=Sophos;i="5.81,295,1610438400"; d="scan'208";a="256124342" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Mar 2021 20:06:17 -0700 IronPort-SDR: z7T/Y8Q9ujTeVKJ/7opEvAERzG7lvXFzKuwGvXlDc11oMyb3w/HpmL2Xt2WacblDLIqm/fLXxl Bjg4P0VIHzxw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,295,1610438400"; d="scan'208";a="517155103" Received: from linux.intel.com ([10.54.29.200]) by fmsmga001.fm.intel.com with ESMTP; 31 Mar 2021 20:06:16 -0700 Received: from debox1-desk2.jf.intel.com (debox1-desk2.jf.intel.com [10.54.75.16]) by linux.intel.com (Postfix) with ESMTP id 614EA5808ED; Wed, 31 Mar 2021 20:06:16 -0700 (PDT) From: "David E. Box" To: irenic.rajneesh@gmail.com, hdegoede@redhat.com, david.e.box@linux.intel.com, mgross@linux.intel.com, gayatri.kammela@intel.com Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/9] platform/x86: intel_pmc_core: Remove global struct pmc_dev Date: Wed, 31 Mar 2021 20:05:51 -0700 Message-Id: <20210401030558.2301621-3-david.e.box@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210401030558.2301621-1-david.e.box@linux.intel.com> References: <20210401030558.2301621-1-david.e.box@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org The intel_pmc_core driver did not always bind to a device which meant it lacked a struct device that could be used to maintain driver data. So a global instance of struct pmc_dev was used for this purpose and functions accessed this directly. Since the driver now binds to an ACPI device, remove the global pmc_dev in favor of one that is allocated during probe. Modify users of the global to obtain the object by argument instead. Signed-off-by: David E. Box --- drivers/platform/x86/intel_pmc_core.c | 41 ++++++++++++++------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c index 260d49dca1ad..5ca40fe3da59 100644 --- a/drivers/platform/x86/intel_pmc_core.c +++ b/drivers/platform/x86/intel_pmc_core.c @@ -31,8 +31,6 @@ #include "intel_pmc_core.h" -static struct pmc_dev pmc; - /* PKGC MSRs are common across Intel Core SoCs */ static const struct pmc_bit_map msr_map[] = { {"Package C2", MSR_PKG_C2_RESIDENCY}, @@ -617,9 +615,8 @@ static int pmc_core_dev_state_get(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(pmc_core_dev_state, pmc_core_dev_state_get, NULL, "%llu\n"); -static int pmc_core_check_read_lock_bit(void) +static int pmc_core_check_read_lock_bit(struct pmc_dev *pmcdev) { - struct pmc_dev *pmcdev = &pmc; u32 value; value = pmc_core_reg_read(pmcdev, pmcdev->map->pm_cfg_offset); @@ -744,28 +741,26 @@ static int pmc_core_ppfear_show(struct seq_file *s, void *unused) DEFINE_SHOW_ATTRIBUTE(pmc_core_ppfear); /* This function should return link status, 0 means ready */ -static int pmc_core_mtpmc_link_status(void) +static int pmc_core_mtpmc_link_status(struct pmc_dev *pmcdev) { - struct pmc_dev *pmcdev = &pmc; u32 value; value = pmc_core_reg_read(pmcdev, SPT_PMC_PM_STS_OFFSET); return value & BIT(SPT_PMC_MSG_FULL_STS_BIT); } -static int pmc_core_send_msg(u32 *addr_xram) +static int pmc_core_send_msg(struct pmc_dev *pmcdev, u32 *addr_xram) { - struct pmc_dev *pmcdev = &pmc; u32 dest; int timeout; for (timeout = NUM_RETRIES; timeout > 0; timeout--) { - if (pmc_core_mtpmc_link_status() == 0) + if (pmc_core_mtpmc_link_status(pmcdev) == 0) break; msleep(5); } - if (timeout <= 0 && pmc_core_mtpmc_link_status()) + if (timeout <= 0 && pmc_core_mtpmc_link_status(pmcdev)) return -EBUSY; dest = (*addr_xram & MTPMC_MASK) | (1U << 1); @@ -791,7 +786,7 @@ static int pmc_core_mphy_pg_show(struct seq_file *s, void *unused) mutex_lock(&pmcdev->lock); - if (pmc_core_send_msg(&mphy_core_reg_low) != 0) { + if (pmc_core_send_msg(pmcdev, &mphy_core_reg_low) != 0) { err = -EBUSY; goto out_unlock; } @@ -799,7 +794,7 @@ static int pmc_core_mphy_pg_show(struct seq_file *s, void *unused) msleep(10); val_low = pmc_core_reg_read(pmcdev, SPT_PMC_MFPMC_OFFSET); - if (pmc_core_send_msg(&mphy_core_reg_high) != 0) { + if (pmc_core_send_msg(pmcdev, &mphy_core_reg_high) != 0) { err = -EBUSY; goto out_unlock; } @@ -842,7 +837,7 @@ static int pmc_core_pll_show(struct seq_file *s, void *unused) mphy_common_reg = (SPT_PMC_MPHY_COM_STS_0 << 16); mutex_lock(&pmcdev->lock); - if (pmc_core_send_msg(&mphy_common_reg) != 0) { + if (pmc_core_send_msg(pmcdev, &mphy_common_reg) != 0) { err = -EBUSY; goto out_unlock; } @@ -863,9 +858,8 @@ static int pmc_core_pll_show(struct seq_file *s, void *unused) } DEFINE_SHOW_ATTRIBUTE(pmc_core_pll); -static int pmc_core_send_ltr_ignore(u32 value) +static int pmc_core_send_ltr_ignore(struct pmc_dev *pmcdev, u32 value) { - struct pmc_dev *pmcdev = &pmc; const struct pmc_reg_map *map = pmcdev->map; u32 reg; int err = 0; @@ -891,6 +885,8 @@ static ssize_t pmc_core_ltr_ignore_write(struct file *file, const char __user *userbuf, size_t count, loff_t *ppos) { + struct seq_file *s = file->private_data; + struct pmc_dev *pmcdev = s->private; u32 buf_size, value; int err; @@ -900,7 +896,7 @@ static ssize_t pmc_core_ltr_ignore_write(struct file *file, if (err) return err; - err = pmc_core_send_ltr_ignore(value); + err = pmc_core_send_ltr_ignore(pmcdev, value); return err == 0 ? count : err; } @@ -1228,13 +1224,19 @@ static void pmc_core_do_dmi_quirks(struct pmc_dev *pmcdev) static int pmc_core_probe(struct platform_device *pdev) { static bool device_initialized; - struct pmc_dev *pmcdev = &pmc; + struct pmc_dev *pmcdev; const struct x86_cpu_id *cpu_id; u64 slp_s0_addr; if (device_initialized) return -ENODEV; + pmcdev = devm_kzalloc(&pdev->dev, sizeof(*pmcdev), GFP_KERNEL); + if (!pmcdev) + return -ENOMEM; + + platform_set_drvdata(pdev, pmcdev); + cpu_id = x86_match_cpu(intel_pmc_core_ids); if (!cpu_id) return -ENODEV; @@ -1264,8 +1266,7 @@ static int pmc_core_probe(struct platform_device *pdev) return -ENOMEM; mutex_init(&pmcdev->lock); - platform_set_drvdata(pdev, pmcdev); - pmcdev->pmc_xram_read_bit = pmc_core_check_read_lock_bit(); + pmcdev->pmc_xram_read_bit = pmc_core_check_read_lock_bit(pmcdev); pmc_core_do_dmi_quirks(pmcdev); /* @@ -1274,7 +1275,7 @@ static int pmc_core_probe(struct platform_device *pdev) */ if (pmcdev->map == &tgl_reg_map) { dev_dbg(&pdev->dev, "ignoring GBE LTR\n"); - pmc_core_send_ltr_ignore(3); + pmc_core_send_ltr_ignore(pmcdev, 3); } pmc_core_dbgfs_register(pmcdev); -- 2.25.1