From nobody Tue Apr 7 14:55:53 2026 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 ED4F4ECAAD5 for ; Fri, 26 Aug 2022 10:32:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343753AbiHZKco (ORCPT ); Fri, 26 Aug 2022 06:32:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245078AbiHZKci (ORCPT ); Fri, 26 Aug 2022 06:32:38 -0400 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74881D290C for ; Fri, 26 Aug 2022 03:32:37 -0700 (PDT) Received: by mail-pf1-x429.google.com with SMTP id z187so1144968pfb.12 for ; Fri, 26 Aug 2022 03:32:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc; bh=dtu5aMtj4xUVB2P5GCPZnShf7gkZy/unClrmm0lDZ+c=; b=b83I/LIUmp+5mSHBInI1Ef5MEkkssWTZ9r1cpEBUBRzA/ZJUnTHCJNuWKrDFCDHlfY GqFUviJizlXZBDZye7eBnd2IYU1/7zMGh+l+j1i15tqSv/PEnrQDHOfeNAzDVa6cI4zJ ASkiPi3xCAUlqtsESLiBaZ5DIwj78VM+MSY/U= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc; bh=dtu5aMtj4xUVB2P5GCPZnShf7gkZy/unClrmm0lDZ+c=; b=vzKaTpZAbk5N2EcfYCa74w3Fs7kdXt3V2wIqPbHePxMbJkeYTCpCsU+tXEf+Sr8SJ7 WU2gFZvcfFxnGG1DDG0ftAHorxJ9Dysg4av5S1wbKbKH77XWQgNDGWjkuO46QfTmLV3T T/AWiJCQJt2G/w10M7uzVXEPXt7xbhAV4HNNMM4SavcHymF3bBXhg6irW7zDfui7F1yH diw3F7wFJb4LFRlExS2q0ld+8GEEieLIBxZ5r/Xcn3RpN2cFgpqs7Is0zlKUHu86kSPd mZQ1e7uA2NRKyru39oRV3bX8QH3nJq0CHKqtLzvTwrqysFWA8+I6FwUzzeUaQ4faNivx svwg== X-Gm-Message-State: ACgBeo0O/BvR17r3pW2vTENJATgMI1NTTYeIotmHTp2Rx7mpRmtNlNHS wbgs7NGaLmWq6GAnWKV2Gbfk8Q== X-Google-Smtp-Source: AA6agR6YwO3Xn18S+BIsUXZCFTJcr2ucNOrvG9nC8pX4z4u57OUlF7fWbmEA7/GLENjqSBtMyfM3yQ== X-Received: by 2002:aa7:8712:0:b0:537:db6d:af66 with SMTP id b18-20020aa78712000000b00537db6daf66mr30006pfo.55.1661509956933; Fri, 26 Aug 2022 03:32:36 -0700 (PDT) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:d4a7:ca1d:f607:5a3b]) by smtp.gmail.com with ESMTPSA id n59-20020a17090a5ac100b001f510175984sm1314610pji.41.2022.08.26.03.32.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Aug 2022 03:32:36 -0700 (PDT) From: Pin-yen Lin To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org Cc: Allen Chen , Hsin-Yi Wang , Pin-yen Lin , linux-kernel@vger.kernel.org Subject: [PATCH] drm/bridge: it6505: Fix the order of DP_SET_POWER commands Date: Fri, 26 Aug 2022 18:32:31 +0800 Message-Id: <20220826103231.2504799-1-treapking@chromium.org> X-Mailer: git-send-email 2.37.2.672.g94769d06f0-goog MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Send DP_SET_POWER_D3 command to the downstream before stopping DP, so the suspend process will not be interrupted by the HPD interrupt. Also modify the order in .atomic_enable callback to make the callbacks symmetric. Fixes: 77c18864c5fc ("drm/bridge: it6505: Send DP_SET_POWER_D3 before stopp= ing DP") Signed-off-by: Pin-yen Lin --- drivers/gpu/drm/bridge/ite-it6505.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/i= te-it6505.c index f9251ec49bf0..2bb957cffd94 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -2951,9 +2951,6 @@ static void it6505_bridge_atomic_enable(struct drm_br= idge *bridge, if (ret) dev_err(dev, "Failed to setup AVI infoframe: %d", ret); =20 - it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, - DP_SET_POWER_D0); - it6505_update_video_parameter(it6505, mode); =20 ret =3D it6505_send_video_infoframe(it6505, &frame); @@ -2963,6 +2960,9 @@ static void it6505_bridge_atomic_enable(struct drm_br= idge *bridge, =20 it6505_int_mask_enable(it6505); it6505_video_reset(it6505); + + it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, + DP_SET_POWER_D0); } =20 static void it6505_bridge_atomic_disable(struct drm_bridge *bridge, @@ -2974,9 +2974,9 @@ static void it6505_bridge_atomic_disable(struct drm_b= ridge *bridge, DRM_DEV_DEBUG_DRIVER(dev, "start"); =20 if (it6505->powered) { - it6505_video_disable(it6505); it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, DP_SET_POWER_D3); + it6505_video_disable(it6505); } } =20 --=20 2.37.2.672.g94769d06f0-goog