From patchwork Tue Nov 3 20:48:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 11879085 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 AF6A492C for ; Tue, 3 Nov 2020 21:49:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8985522384 for ; Tue, 3 Nov 2020 21:49:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="mbhgCC+P" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731547AbgKCUt1 (ORCPT ); Tue, 3 Nov 2020 15:49:27 -0500 Received: from m42-4.mailgun.net ([69.72.42.4]:43695 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731532AbgKCUt0 (ORCPT ); Tue, 3 Nov 2020 15:49:26 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1604436563; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=v38VIvvqFPW9T8r0lWGRdQ5SsoAKhs1w4NYwSBxeq3U=; b=mbhgCC+Pd0rV8h24yo8cqFPujSWOuwQS3HwTbwRs5l8GrZxznRJWhZhyLtG53DGAwDwmm3X7 regqbMc+2Aa4C/ACZ4GcuUturTgGYdeN+uISmnuVBUr81LUvdz6hojUDPpVXuCFYc1qGUGrX bNKdZfgTknarqRQOpCHfDUQKuQY= X-Mailgun-Sending-Ip: 69.72.42.4 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-n04.prod.us-east-1.postgun.com with SMTP id 5fa1c2527b1a71d668589469 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 03 Nov 2020 20:49:22 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C49D5C384EA; Tue, 3 Nov 2020 20:49:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL autolearn=no autolearn_force=no version=3.4.0 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 E7A5BC43443; Tue, 3 Nov 2020 20:49:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E7A5BC43443 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 0/3] fix dp link training failed at irq_hpd request Date: Tue, 3 Nov 2020 12:48:59 -0800 Message-Id: <20201103204902.11899-1-khsieh@codeaurora.org> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some dongle require link training be done at irq_hpd request. This serial patches address the issues so that DP/HDMI display can be lit up properlly. This serial Patch also fixes clock stuck at "off" state error caused by previous link training failed. Kuogee Hsieh (3): drm/msm/dp: deinitialize mainlink if link training failed drm/msm/dp: skip checking LINK_STATUS_UPDATED bit drm/msm/dp: promote irq_hpd handle to handle link training correctly drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +- drivers/gpu/drm/msm/dp/dp_catalog.h | 2 +- drivers/gpu/drm/msm/dp/dp_ctrl.c | 60 +++++++++++++++++++++-------- drivers/gpu/drm/msm/dp/dp_display.c | 40 ++++++++++++++++--- drivers/gpu/drm/msm/dp/dp_link.c | 29 +++++++------- drivers/gpu/drm/msm/dp/dp_panel.c | 2 +- 6 files changed, 96 insertions(+), 39 deletions(-)