From patchwork Thu Aug 22 13:57:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Francis X-Patchwork-Id: 11109347 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6744714DB for ; Thu, 22 Aug 2019 13:57:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4E86422CE3 for ; Thu, 22 Aug 2019 13:57:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4E86422CE3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amd.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C28CD6EB40; Thu, 22 Aug 2019 13:57:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from NAM04-SN1-obe.outbound.protection.outlook.com (mail-eopbgr700080.outbound.protection.outlook.com [40.107.70.80]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B0A96EB3F for ; Thu, 22 Aug 2019 13:57:50 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=It61KkfuBWzw6C7RKB6aE0in+rvKgRnY6JOtVNrkTX9N9U4ta2ZV3Q2C+KxKhbXkg2Nb4jQzgP7dKCghM2uVyLC/+DuS5JS0Apx5TkGFGEY3IDpnvkZantFRdKoYu2BSaSPITdIv3MLMloJ33ZfgJK325BRHtUg9k4WnWU2yWwbDxy4hmN29v0wUX5Sk2oTI3gxrbRKHpEfc6KfREBqLTc5aSZ1cVAeX/P975K4L8GEEWlldMACmD4RVuS3eVCmYsPZc8G18txQwCWKhf6wgnF2rUDuUAXqfsQN1rrozZpQa1wUek4fpyxc1iGzFYuLVW7KKeNGZ3vvYwkSyDglLgg== 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-SenderADCheck; bh=BhnFxwuDTx5hpmT3OcJQP3Rt2TnQVf6HyR7XNSCJebg=; b=UQgFQI9v1CYTWFBP0V5eLvCmG5AuC6jJXpyAH3p5ziRcA3Ymyrln3p1gUzNL/7LDMokyWbKNnF4t7ayWRtHmyHet0XDcFRn+L3RET41frhsg88qYxj8m94yBKKdm7GebUMzQee+SSTxNE180X7Z5LiOKLicqMu2lhD/VJqPhtmoV2rs1liCUHxZZxo4HYBhh9DsEylU9/5dL97mShywP48146zFGWZ6FJ6oAg0Xour8D/9VFd1f40k5vWmHAzuxMDcZvvbA4VlbG9NHTart+9Dx8tzjHwonjrOZl8BCY29uWeEzCVa+qPpJlsKex0FB8oTTbgSmsjoLt0+eYI42ufg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.freedesktop.org smtp.mailfrom=amd.com; dmarc=permerror action=none header.from=amd.com; dkim=none (message not signed); arc=none Received: from DM3PR12CA0085.namprd12.prod.outlook.com (2603:10b6:0:57::29) by BYAPR12MB2711.namprd12.prod.outlook.com (2603:10b6:a03:68::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2178.18; Thu, 22 Aug 2019 13:57:48 +0000 Received: from CO1NAM03FT023.eop-NAM03.prod.protection.outlook.com (2a01:111:f400:7e48::205) by DM3PR12CA0085.outlook.office365.com (2603:10b6:0:57::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2199.15 via Frontend Transport; Thu, 22 Aug 2019 13:57:48 +0000 Received-SPF: None (protection.outlook.com: amd.com does not designate permitted sender hosts) Received: from SATLEXCHOV01.amd.com (165.204.84.17) by CO1NAM03FT023.mail.protection.outlook.com (10.152.80.157) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2178.16 via Frontend Transport; Thu, 22 Aug 2019 13:57:47 +0000 Received: from localhost.localdomain (10.180.168.240) by SATLEXCHOV01.amd.com (10.181.40.71) with Microsoft SMTP Server id 14.3.389.1; Thu, 22 Aug 2019 08:57:45 -0500 From: David Francis To: Subject: [PATCH v4 2/5] drm/dp-mst: Parse FEC capability on MST ports Date: Thu, 22 Aug 2019 09:57:38 -0400 Message-ID: <20190822135741.12923-3-David.Francis@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190822135741.12923-1-David.Francis@amd.com> References: <20190822135741.12923-1-David.Francis@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:165.204.84.17; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(4636009)(346002)(396003)(136003)(39860400002)(376002)(2980300002)(428003)(189003)(199004)(8936002)(305945005)(4326008)(81166006)(81156014)(336012)(53936002)(86362001)(2351001)(8676002)(50226002)(426003)(126002)(1076003)(486006)(476003)(47776003)(5660300002)(478600001)(186003)(50466002)(316002)(2616005)(26005)(48376002)(49486002)(11346002)(76176011)(36756003)(6916009)(2906002)(6666004)(16586007)(356004)(70206006)(446003)(51416003)(70586007); DIR:OUT; SFP:1101; SCL:1; SRVR:BYAPR12MB2711; H:SATLEXCHOV01.amd.com; FPR:; SPF:None; LANG:en; PTR:InfoDomainNonexistent; MX:1; A:1; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8ec2342e-612a-4790-0519-08d72708b6e5 X-Microsoft-Antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(5600166)(711020)(4605104)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328); SRVR:BYAPR12MB2711; X-MS-TrafficTypeDiagnostic: BYAPR12MB2711: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4714; X-Forefront-PRVS: 01371B902F X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: YvX/LjAkgIJ+4FxCZrlnrfFbnV5dmn2IQqOF/oLFPjYDi5gpyqDEjETWWKZedDCcdzEImuJvEEr6gP8w2HFOqtRwy5HQ1NAeq54ZH33lXzaisHIbZggNegAsSdLt3P9GJ6+uDCb5GyLrjvudCtHxuz79NsRBfEaxbu68HWYwyda5FGIqAldARhtmpUUFII7SFMGxT+WkBD7Dy54jOavsl5+QL3NvWP+1aSumWFVsqbxQTbFPKa6hfyWfp+PMGvj0IeZkPSElCE9yu6PQfO1AoHJEYgotAlVN5dI/n//3UfAJrG0SRfuemPiv8eHfp0qkGv5bBMQAuuRxDoq5Tikx3I+IkCwnM4zL58AALkIHdln1CNneSfRvpU1AQHlOisISTI7LpLKC8LXqYH57oAsRy8y0L8ji/PQHBSiQuiIdsgM= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Aug 2019 13:57:47.5916 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8ec2342e-612a-4790-0519-08d72708b6e5 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=[SATLEXCHOV01.amd.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB2711 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector2-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=BhnFxwuDTx5hpmT3OcJQP3Rt2TnQVf6HyR7XNSCJebg=; b=S/rSVBm3GeIGpyEKOZtQyjpatAWKgjXT/7zaoJfrFj6g+eae96fvuez15q8lZMTkMuwhgmHCCJXC3v9GzmNBm64ByijTJzIuQr8CIRh2FXNbOvBbmbp6DIRRDHDWvHQUtnRO/NTr7DUc/A8x9OE1z38A4Z++Br0pBqJRTgG2nLI= X-Mailman-Original-Authentication-Results: spf=none (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; lists.freedesktop.org; dkim=none (message not signed) header.d=none;lists.freedesktop.org; dmarc=permerror action=none header.from=amd.com; X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Francis Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" As of DP1.4, ENUM_PATH_RESOURCES returns a bit indicating if FEC can be supported up to that point in the MST network. The bit is the first byte of the ENUM_PATH_RESOURCES ack reply, bottom-most bit (refer to section 2.11.9.4 of DP standard, v1.4) That value is needed for FEC and DSC support Store it on drm_dp_mst_port Signed-off-by: David Francis Reviewed-by: Lyude Paul --- drivers/gpu/drm/drm_dp_mst_topology.c | 2 ++ include/drm/drm_dp_mst_helper.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 8e2e731c35c5..50a044718439 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -553,6 +553,7 @@ static bool drm_dp_sideband_parse_enum_path_resources_ack(struct drm_dp_sideband { int idx = 1; repmsg->u.path_resources.port_number = (raw->msg[idx] >> 4) & 0xf; + repmsg->u.path_resources.fec_capable = raw->msg[idx] & 0x1; idx++; if (idx > raw->curlen) goto fail_len; @@ -2183,6 +2184,7 @@ static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, DRM_DEBUG_KMS("enum path resources %d: %d %d\n", txmsg->reply.u.path_resources.port_number, txmsg->reply.u.path_resources.full_payload_bw_number, txmsg->reply.u.path_resources.avail_payload_bw_number); port->available_pbn = txmsg->reply.u.path_resources.avail_payload_bw_number; + port->fec_capable = txmsg->reply.u.path_resources.fec_capable; } } diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index ddb518f2157a..fa973773a4a7 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -108,6 +108,8 @@ struct drm_dp_mst_port { * audio-capable. */ bool has_audio; + + bool fec_capable; }; /** @@ -312,6 +314,7 @@ struct drm_dp_port_number_req { struct drm_dp_enum_path_resources_ack_reply { u8 port_number; + bool fec_capable; u16 full_payload_bw_number; u16 avail_payload_bw_number; };