From patchwork Fri Feb 2 15:28:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hamza Mahfooz X-Patchwork-Id: 195903 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:9bc1:b0:106:209c:c626 with SMTP id op1csp504917dyc; Fri, 2 Feb 2024 07:29:46 -0800 (PST) X-Google-Smtp-Source: AGHT+IFPbTvpepKcrfiii12DgpNLyvva+yzj5MtZCZF3POCEDHO2ZBxbRggp9SZszlaJWGUkDVXW X-Received: by 2002:a05:6871:7a11:b0:210:d74e:9d0d with SMTP id pc17-20020a0568717a1100b00210d74e9d0dmr8721830oac.57.1706887786616; Fri, 02 Feb 2024 07:29:46 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCUV37612z9hPhFocy15ZH49zYBQjRogoMm34vRBwjnWMbWrt1N6evutU5PpKjrPUUHl0tsSRyKynry4FQzGzwcnlbZQGg== Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id bp37-20020a05622a1ba500b0042c0b72fb09si49480qtb.139.2024.02.02.07.29.46 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Feb 2024 07:29:46 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-50021-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=m1jE29Dx; arc=fail (signature failed); spf=pass (google.com: domain of linux-kernel+bounces-50021-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-50021-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 5698F1C22054 for ; Fri, 2 Feb 2024 15:29:46 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E80581474AC; Fri, 2 Feb 2024 15:29:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="m1jE29Dx" Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2083.outbound.protection.outlook.com [40.107.237.83]) (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 4B5C11468F0 for ; Fri, 2 Feb 2024 15:29:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.237.83 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706887753; cv=fail; b=J5qUlNGoTBsBrk4jj5QRLd3KzBuLpmJ0QqQd8G3HoyHLnMZ+p/FD4T0mbIHqx2MzWfiyKf5cM94ZLqgJzLfLP/aiBaxSjGn+FIxMGhzkIHBM/6NK0DuokzBB5coRYM79ehcOotvsC1A+kMMegIHsNWjj4W7sWnfGhDI4zRKNyBo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706887753; c=relaxed/simple; bh=iqugAU5W7XDUwANq4GvSVtPdFvrGMIsbGQkaVhr8uoo=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=rOIfZCOd+7Q0C46dmSZkDgx0CgA0IB6G969GnaKNwgir7AI7h8VE+BZsiix6JwsQhbCvY/W7Z6bsrW7dH3tES01wAajCrUjqWUw/yPD/wAdb5lya2EHYeOEe6YjeIQoj2CkfB+liRQeZ0qMj/1vyLWrbSmDMTASI1Jzpy0Gc6Uc= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=m1jE29Dx; arc=fail smtp.client-ip=40.107.237.83 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=e8nJvqO4b/nFYGYHcdynQ0g6IJXzs6t326AaJrHlGpEJkdS916jo5jQJsfbI1NPJC0VOdBllLxsUQSJm5U4XfgoFwAER6sse14oncISiheUlxTsNBictq6eEM8AJhNYmQBZ1ITkgQakEr/EYKwMqD7F4ny923NIxBb23TST1dzyDvyKjeayspFu4u/sTKtxUkUemFkrFCZxiX/FUCbbftVBHBKEq8uLlbk7/UULwB04LPJ5trK3gSe4F7zI6hGaDgbnscCzceY2SJ7X3pnimHeiZix/1+64vO2IOM+MuygyagyqpCE9Ehxj26HSrv7oXMy47fplDjAsplNJqsP2nOA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=UYWODiTtYOch6HfYrBMmvBJk+iOEDVwPN5IDcHkhyZo=; b=cu9ijXFFTJHzbZ0CtYSd6EcQ08NnWB9LJ/fz/a1ke56GDQnf7FwCxMzUH0m8wbJzzQoulwjQfHbC4ARfLUxdKMq6eQPay1AnL4HGhiQpzCtMBdzq4/taWLmHPl30PqClWZ7vS7aeauqxXfK+puQbWs/MMRStCfleJGt9OYbauoSX/iD7A+snhpAiMGuno5LK99ufPksn+ZQjlj3dKgAGDvpmB0GvL/TvNA3sOyrkHKGhBW6ufJVa5h2nVtlwMcKu2H6p9tkVeOx7gpcJcZDj6UCQoxclkikCXzwb6Qom3ROf9VI75jlNNfM2uATqocEMRnRem12q5bMUMApIGRLGQQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.freedesktop.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=UYWODiTtYOch6HfYrBMmvBJk+iOEDVwPN5IDcHkhyZo=; b=m1jE29DxtW0xcEeuR3zjvD4w1z687ix9epiC95sSgHkVwppknnK2EQfXRtjr1sCDLzq1afd1UUUsfFtgVPeR/UfbWzUjCiOHSl+YxFl20/piHYmH/hQJ078bzBRClwzNbGwXPvtNIWfjZS7kRUmQQbVYtUWJ6I6GloTSlOeiQSg= Received: from SJ0PR05CA0057.namprd05.prod.outlook.com (2603:10b6:a03:33f::32) by IA1PR12MB6530.namprd12.prod.outlook.com (2603:10b6:208:3a5::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.11; Fri, 2 Feb 2024 15:29:07 +0000 Received: from SJ5PEPF000001CD.namprd05.prod.outlook.com (2603:10b6:a03:33f:cafe::6c) by SJ0PR05CA0057.outlook.office365.com (2603:10b6:a03:33f::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.23 via Frontend Transport; Fri, 2 Feb 2024 15:29:06 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by SJ5PEPF000001CD.mail.protection.outlook.com (10.167.242.42) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7202.16 via Frontend Transport; Fri, 2 Feb 2024 15:29:06 +0000 Received: from hamza-pc.localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Fri, 2 Feb 2024 09:29:04 -0600 From: Hamza Mahfooz To: CC: Hamza Mahfooz , Mario Limonciello , Harry Wentland , Leo Li , Rodrigo Siqueira , "Alex Deucher" , =?utf-8?q?Christian_K=C3=B6nig?= , "Pan, Xinhui" , David Airlie , Daniel Vetter , Alex Hung , Srinivasan Shanmugam , Wayne Lin , , Subject: [PATCH v2] drm/amd/display: add panel_power_savings sysfs entry to eDP connectors Date: Fri, 2 Feb 2024 10:28:35 -0500 Message-ID: <20240202152837.7388-1-hamza.mahfooz@amd.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001CD:EE_|IA1PR12MB6530:EE_ X-MS-Office365-Filtering-Correlation-Id: cd3d2c66-c5b6-4125-34da-08dc2403b1a8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(39860400002)(346002)(136003)(376002)(396003)(230922051799003)(1800799012)(82310400011)(186009)(64100799003)(451199024)(46966006)(40470700004)(36840700001)(5660300002)(4326008)(8936002)(8676002)(40480700001)(40460700003)(54906003)(6916009)(316002)(70206006)(2906002)(70586007)(44832011)(36756003)(26005)(47076005)(478600001)(1076003)(2616005)(6666004)(83380400001)(82740400003)(426003)(356005)(336012)(81166007)(16526019)(36860700001)(86362001)(41300700001)(16060500005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2024 15:29:06.2610 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cd3d2c66-c5b6-4125-34da-08dc2403b1a8 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001CD.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6530 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789801567655577717 X-GMAIL-MSGID: 1789801567655577717 We want programs besides the compositor to be able to enable or disable panel power saving features. However, since they are currently only configurable through DRM properties, that isn't possible. So, to remedy that issue introduce a new "panel_power_savings" sysfs attribute. Cc: Mario Limonciello Signed-off-by: Hamza Mahfooz Reviewed-by: Mario Limonciello Tested-by: Mario Limonciello --- v2: hide ABM_LEVEL_IMMEDIATE_DISABLE in the read case, force an atomic commit when setting the value, call sysfs_remove_group() in amdgpu_dm_connector_unregister() and add some documentation. --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 8590c9f1dda6..3c62489d03dc 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6436,10 +6436,79 @@ int amdgpu_dm_connector_atomic_get_property(struct drm_connector *connector, return ret; } +/** + * DOC: panel power savings + * + * The display manager allows you to set your desired **panel power savings** + * level (between 0-4, with 0 representing off), e.g. using the following:: + * + * # echo 3 > /sys/class/drm/card0-eDP-1/amdgpu/panel_power_savings + * + * Modifying this value can have implications on color accuracy, so tread + * carefully. + */ + +static ssize_t panel_power_savings_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct drm_connector *connector = dev_get_drvdata(device); + struct drm_device *dev = connector->dev; + u8 val; + + drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); + val = to_dm_connector_state(connector->state)->abm_level == + ABM_LEVEL_IMMEDIATE_DISABLE ? 0 : + to_dm_connector_state(connector->state)->abm_level; + drm_modeset_unlock(&dev->mode_config.connection_mutex); + + return sysfs_emit(buf, "%u\n", val); +} + +static ssize_t panel_power_savings_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct drm_connector *connector = dev_get_drvdata(device); + struct drm_device *dev = connector->dev; + long val; + int ret; + + ret = kstrtol(buf, 0, &val); + + if (ret) + return ret; + + if (val < 0 || val > 4) + return -EINVAL; + + drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); + to_dm_connector_state(connector->state)->abm_level = val ?: + ABM_LEVEL_IMMEDIATE_DISABLE; + drm_modeset_unlock(&dev->mode_config.connection_mutex); + + drm_kms_helper_hotplug_event(dev); + + return count; +} + +static DEVICE_ATTR_RW(panel_power_savings); + +static struct attribute *amdgpu_attrs[] = { + &dev_attr_panel_power_savings.attr, + NULL +}; + +static const struct attribute_group amdgpu_group = { + .name = "amdgpu", + .attrs = amdgpu_attrs +}; + static void amdgpu_dm_connector_unregister(struct drm_connector *connector) { struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector); + sysfs_remove_group(&connector->kdev->kobj, &amdgpu_group); drm_dp_aux_unregister(&amdgpu_dm_connector->dm_dp_aux.aux); } @@ -6541,6 +6610,13 @@ amdgpu_dm_connector_late_register(struct drm_connector *connector) to_amdgpu_dm_connector(connector); int r; + if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) { + r = sysfs_create_group(&connector->kdev->kobj, + &amdgpu_group); + if (r) + return r; + } + amdgpu_dm_register_backlight_device(amdgpu_dm_connector); if ((connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||