From patchwork Wed Jan 26 23:58:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Won Chung X-Patchwork-Id: 536801 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 26ECFC433EF for ; Wed, 26 Jan 2022 23:58:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232171AbiAZX6M (ORCPT ); Wed, 26 Jan 2022 18:58:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231998AbiAZX6M (ORCPT ); Wed, 26 Jan 2022 18:58:12 -0500 Received: from mail-pf1-x44a.google.com (mail-pf1-x44a.google.com [IPv6:2607:f8b0:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2DCDAC06173B for ; Wed, 26 Jan 2022 15:58:12 -0800 (PST) Received: by mail-pf1-x44a.google.com with SMTP id z37-20020a056a001da500b004c74e3fd644so660228pfw.1 for ; Wed, 26 Jan 2022 15:58:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc; bh=okrQu2VSlzKkLZmDYcnmzL0C8aPu3r9sPHmlPe5ENII=; b=Mt8LOMhIs1dO4iJ8XfSrZOam3/YWQbcEFBfKm6JvixzqsAeChMqG2N0u2zPKpVRJBB DpTTta8O8spSNnZwCB+PAycUj3qpfr6xP6aoo2sHQN1g7sLocm/W6gtP8akRWCSS7NlT TdsE8145oQssomt3rUzLuP4IgOxONlw/S20ksU+xHSuONEQ5z0vxzAGYK4lwfR6zCRWQ 7SY1qFF8Y8Dtk1Zna0ZFj7xWDx9zjqDT6ae/Tu/W785s6pif+AjFOWYVnBUdDatWAcMH IJ6XixGMTMYX6PQzcMYlBhgOG0qUBXSoJMKB+s+kiiTV4so+MtmqnzDCSRqS3Q0UvKfN b+ew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=okrQu2VSlzKkLZmDYcnmzL0C8aPu3r9sPHmlPe5ENII=; b=CFmYdrJtGa7RNgjJh0Yrqcy20Z1UR5t/kg+OuMaUT2qk735uI76764b57sh0Ik0w9f TLo6jZv74paMh5VrDWMzCFm+OZSuXnygFiwFXONCuay5Q0afZkJpmyc1Rrc7p4z7j89U ACFgp+kpHBLT6d7ZV7qaR9mSoUZZpqFhik1+Yu9ZkgEnI4oqLrD5DVUGrCSt6yB//ikr /B8h7j1meV1VoDAK1qnRxXIdMz5O1cRh4wcZyCiDlp+QHO/W9Za6PY2NUFQF9ntU3zce JhpU/uWJfNzkDwYX9H3kpjjUJfwyJjiqUmqoxWPAVThr/ZnkLJeUjWJLQC4EhloINNTv Niyw== X-Gm-Message-State: AOAM530UTyQLGNTiVm3nQ79OhZJYhVlt399pZna2Tew7elVS2btzofjX MbQuE94+CGgKEcnMphYyC8ZsN8oLPFWwog== X-Google-Smtp-Source: ABdhPJzUAryUJdlCf6CchFAhgLHT/3EeL7pC2SF8tvOaQvVpONSgmaVYy4N3LRnXp0to4bDTgcgXH2jCM5doLA== X-Received: from wonchungspecialist.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1440]) (user=wonchung job=sendgmr) by 2002:a05:6a00:b82:: with SMTP id g2mr1128038pfj.33.1643241491582; Wed, 26 Jan 2022 15:58:11 -0800 (PST) Date: Wed, 26 Jan 2022 23:58:07 +0000 Message-Id: <20220126235807.3164317-1-wonchung@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog Subject: [PATCH] ACPI: device_sysfs: Add sysfs support for _PLD From: Won Chung To: "Rafael J . Wysocki" , Len Brown , Benson Leung , Prashant Malani , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Won Chung Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org When ACPI table includes _PLD fields for a device, create a new file (pld) in sysfs to share _PLD fields. Signed-off-by: Won Chung --- drivers/acpi/device_sysfs.c | 42 +++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c index d5d6403ba07b..8d4df5fb1c45 100644 --- a/drivers/acpi/device_sysfs.c +++ b/drivers/acpi/device_sysfs.c @@ -509,6 +509,40 @@ static ssize_t status_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(status); +static ssize_t pld_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + acpi_status status; + struct acpi_pld_info *pld; + + status = acpi_get_physical_device_location(acpi_dev->handle, &pld); + if (ACPI_FAILURE(status)) + return -ENODEV; + + return sprintf(buf, "GROUP_TOKEN=%u\n" + "GROUP_POSITION=%u\n" + "USER_VISIBLE=%u\n" + "DOCK=%u\n" + "BAY=%u\n" + "LID=%u\n" + "PANEL=%u\n" + "HORIZONTAL_POSITION=%u\n" + "VERTICAL_POSITION=%u\n" + "SHAPE=%u\n", + pld->group_token, + pld->group_position, + pld->user_visible, + pld->dock, + pld->bay, + pld->lid, + pld->panel, + pld->horizontal_position, + pld->vertical_position, + pld->shape); +} +static DEVICE_ATTR_RO(pld); + /** * acpi_device_setup_files - Create sysfs attributes of an ACPI device. * @dev: ACPI device object. @@ -595,6 +629,12 @@ int acpi_device_setup_files(struct acpi_device *dev) &dev_attr_real_power_state); } + if (acpi_has_method(dev->handle, "_PLD")) { + result = device_create_file(&dev->dev, &dev_attr_pld); + if (result) + goto end; + } + acpi_expose_nondev_subnodes(&dev->dev.kobj, &dev->data); end: @@ -645,4 +685,6 @@ void acpi_device_remove_files(struct acpi_device *dev) device_remove_file(&dev->dev, &dev_attr_status); if (dev->handle) device_remove_file(&dev->dev, &dev_attr_path); + if (acpi_has_method(dev->handle, "_PLD")) + device_remove_file(&dev->dev, &dev_attr_pld); }