From patchwork Wed Jan 13 18:59:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 12017693 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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 2A6CEC433E6 for ; Wed, 13 Jan 2021 19:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0943A235F8 for ; Wed, 13 Jan 2021 19:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728434AbhAMTBs (ORCPT ); Wed, 13 Jan 2021 14:01:48 -0500 Received: from m43-15.mailgun.net ([69.72.43.15]:59691 "EHLO m43-15.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728413AbhAMTBr (ORCPT ); Wed, 13 Jan 2021 14:01:47 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1610564490; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=v+t5ZjZHmOvSSICCDPJB44KGvtnlC42GelECNsheDPI=; b=HKAxBIssaaFpaAruyoaGNJ/+6c2TX1CRLFHwXgqbkge7XKpFtR+CwVIr0ecQf/oKJhrtTYWL jGDcCn++YsoTQ0Rg6Ils+3ii4RFhWHzZlCp7HPBHTHyLNCQlr33v9d4c4LwEZF7deTqV9ZN9 qQDZnRbAib44A+GTzSAyTmI+bT8= X-Mailgun-Sending-Ip: 69.72.43.15 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n08.prod.us-east-1.postgun.com with SMTP id 5fff434c46a6c7cde7dbb9cf (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 13 Jan 2021 19:00:28 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 3AB56C433ED; Wed, 13 Jan 2021 19:00:27 +0000 (UTC) Received: from khsieh-linux1.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: khsieh) by smtp.codeaurora.org (Postfix) with ESMTPSA id E9D9FC433CA; Wed, 13 Jan 2021 19:00:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E9D9FC433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=khsieh@codeaurora.org From: Kuogee Hsieh To: dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org Cc: Kuogee Hsieh , tanmay@codeaurora.org, abhinavk@codeaurora.org, aravindh@codeaurora.org, airlied@linux.ie, daniel@ffwll.ch, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] fix missing unplug interrupt problem Date: Wed, 13 Jan 2021 10:59:58 -0800 Message-Id: <1610564400-29788-1-git-send-email-khsieh@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Both AUX_SW_RESET and DP_SW_RESET clear pending HPD interrupts. Therefore irq_hpd handler should not issues either aux or sw reset to avoid following unplug interrupt be cleared accidentally. Kuogee Hsieh (2): drm/msm/dp: return fail when both link lane and rate are 0 at dpcd read drm/msm/dp: unplug interrupt missed after irq_hpd handler drivers/gpu/drm/msm/dp/dp_aux.c | 7 ------- drivers/gpu/drm/msm/dp/dp_catalog.c | 24 ++++++++++++++++++++++++ drivers/gpu/drm/msm/dp/dp_ctrl.c | 15 ++++++++++----- drivers/gpu/drm/msm/dp/dp_display.c | 7 +++++++ drivers/gpu/drm/msm/dp/dp_panel.c | 12 +++++++++--- 5 files changed, 50 insertions(+), 15 deletions(-)