From patchwork Tue Sep 13 16:31:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 607035 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55711C6FA8A for ; Tue, 13 Sep 2022 17:39:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233263AbiIMRj5 (ORCPT ); Tue, 13 Sep 2022 13:39:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232967AbiIMRjd (ORCPT ); Tue, 13 Sep 2022 13:39:33 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BF937D1E9; Tue, 13 Sep 2022 09:31:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663086714; x=1694622714; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0m7qErf7VtY8xsWlWb+ddH+SXJeXMzL+LVnonABMCEw=; b=gy4kgmHuKHjbqQVv4qThKgpUVqnqTZoBMck8XXJFVCcqwAcn4j11taiz UDGMdutjSh9NoC2GhgBcS6AhBZBpggPSMW3GFZ8gLuJ6Pm1BJB1znvQUJ K1cfLzTXz8G2kpDTi99M5qet9gojxX9Rwd/2G68abNo9NUQg19JcYOkkd pqWd/sDldbOqOKXq1cD+K/DQZjIH0hSnY0Swl31KRh+0J54POmRaJFP7B cLNOHvB+xg+1sgrWtyjnZ8PUYf7rhjDOULCGIDKzxfIKbXCO/lUZe/8Lu bO4ZUZlvQafVrslhinannS1cTkA5Kfc9V3LFkPXd/hFRQGHJhzWp9+VYm w==; X-IronPort-AV: E=McAfee;i="6500,9779,10469"; a="285207775" X-IronPort-AV: E=Sophos;i="5.93,313,1654585200"; d="scan'208";a="285207775" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Sep 2022 09:31:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,313,1654585200"; d="scan'208";a="742221535" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 13 Sep 2022 09:31:32 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 5F1B145C; Tue, 13 Sep 2022 19:31:49 +0300 (EEST) From: Andy Shevchenko To: "Rafael J. Wysocki" , Andy Shevchenko , Hans de Goede , Ard Biesheuvel , Wolfram Sang , Mark Brown , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org, devel@acpica.org Cc: "Rafael J. Wysocki" , Len Brown , Elie Morisse , Nehal Shah , Shyam Sundar S K , Khalil Blaiech , Andy Gross , Bjorn Andersson , Konrad Dybcio , Will Deacon , Mark Rutland , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Robert Moore , Wolfram Sang Subject: [PATCH v3 4/8] i2c: amd-mp2-plat: Refactor _UID handling to use acpi_dev_uid_to_integer() Date: Tue, 13 Sep 2022 19:31:43 +0300 Message-Id: <20220913163147.24258-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220913163147.24258-1-andriy.shevchenko@linux.intel.com> References: <20220913163147.24258-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as an integer. Use it instead of custom approach. Signed-off-by: Andy Shevchenko Acked-by: Wolfram Sang Reviewed-by: Hans de Goede --- drivers/i2c/busses/i2c-amd-mp2-plat.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) diff --git a/drivers/i2c/busses/i2c-amd-mp2-plat.c b/drivers/i2c/busses/i2c-amd-mp2-plat.c index 84b7e6cbc67b..423fe0c8a471 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-plat.c +++ b/drivers/i2c/busses/i2c-amd-mp2-plat.c @@ -244,14 +244,18 @@ static const struct i2c_adapter_quirks amd_i2c_dev_quirks = { static int i2c_amd_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; int ret; struct amd_i2c_dev *i2c_dev; - struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); struct amd_mp2_dev *mp2_dev; - const char *uid; + u64 uid; - if (!adev) - return -ENODEV; + ret = acpi_dev_uid_to_integer(ACPI_COMPANION(dev), &uid); + if (ret) + return dev_err_probe(dev, ret, "missing UID/bus id!\n"); + if (uid >= 2) + return dev_err_probe(dev, -EINVAL, "incorrect UID/bus id \"%llu\"!\n", uid); + dev_dbg(dev, "bus id is %llu\n", uid); /* The ACPI namespace doesn't contain information about which MP2 PCI * device an AMDI0011 ACPI device is related to, so assume that there's @@ -266,6 +270,7 @@ static int i2c_amd_probe(struct platform_device *pdev) if (!i2c_dev) return -ENOMEM; + i2c_dev->common.bus_id = uid; i2c_dev->common.mp2_dev = mp2_dev; i2c_dev->pdev = pdev; platform_set_drvdata(pdev, i2c_dev); @@ -276,20 +281,6 @@ static int i2c_amd_probe(struct platform_device *pdev) i2c_dev->common.resume = &i2c_amd_resume; #endif - uid = adev->pnp.unique_id; - if (!uid) { - dev_err(&pdev->dev, "missing UID/bus id!\n"); - return -EINVAL; - } else if (strcmp(uid, "0") == 0) { - i2c_dev->common.bus_id = 0; - } else if (strcmp(uid, "1") == 0) { - i2c_dev->common.bus_id = 1; - } else { - dev_err(&pdev->dev, "incorrect UID/bus id \"%s\"!\n", uid); - return -EINVAL; - } - dev_dbg(&pdev->dev, "bus id is %u\n", i2c_dev->common.bus_id); - /* Register the adapter */ amd_mp2_pm_runtime_get(mp2_dev);