From nobody Sat Apr 18 11:03:42 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 78F95C433EF for ; Thu, 14 Jul 2022 09:39:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238335AbiGNJjb (ORCPT ); Thu, 14 Jul 2022 05:39:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46824 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238127AbiGNJj3 (ORCPT ); Thu, 14 Jul 2022 05:39:29 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 98B3C286E8 for ; Thu, 14 Jul 2022 02:39:28 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id g16-20020a17090a7d1000b001ea9f820449so8048363pjl.5 for ; Thu, 14 Jul 2022 02:39:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=035aCrOz5ERcq1QdmAwfHzCWjFJoscBLHwbpgcL7qwM=; b=IPcwiRAPfXZGdabealGssIj3UFwxYY+gjXA8gU2bN98caeRupARqxJi5HvEaCHj8LU l369ixh3UstTtFS1BnorG0XXEhuP5h0hAgJ+FtMmjNUfmrUgC24cb61vTCAsdX+wL7HZ 5NBJwOaPmwCW3P9eKO3GGTpFex7BdN5odvivw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=035aCrOz5ERcq1QdmAwfHzCWjFJoscBLHwbpgcL7qwM=; b=bt5gsj876nLZi1kedK4JJmCYcA+INw4Zu5vgIIH9+uPmdnpGdZ+i3apBfmVC4nHLqA fosyTeXg3VVYy7ZYQcJGmF9ZbWQt+n2zjbNH9EPj2AJw5cJ6+WLpAGe8SaWge4hRZmsx hJG3s7KRiGguW9NwUJdQMyYrMTBXcXsvO4tMImDk4/JB2wyiyghpUT3o/zCpVOz0fYAC to1/H6ivjJtdH1ys3vvjJHJCXR3cT/SmtozcODA1aAztTHX2o5T6zX5iizi6v35mIV1z 3vtYEMvoCUyOBq2/tXA+ODukFN/bPBY92h7pzUgFoXtgY+C7AwZa4PSIbU9Q/47UPUMd G0Fw== X-Gm-Message-State: AJIora/7vnvQMKtI5JCPfgwlbyZ+J3pxiek7/A1yFxlABQyTVXSkiOYF wH0UGz+TA/joqg0iSFRvHkvYM0vmxBEKyQ== X-Google-Smtp-Source: AGRyM1uHl6xzZtJP+2RbMoBawnwUDbMd+wrFhj4n0h0m6qDMV3KEhp79mOW1zYnnkrHA80MGqTCS2w== X-Received: by 2002:a17:90b:1643:b0:1f0:2094:57db with SMTP id il3-20020a17090b164300b001f0209457dbmr8738186pjb.140.1657791568146; Thu, 14 Jul 2022 02:39:28 -0700 (PDT) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:e954:82dc:af20:e6e1]) by smtp.gmail.com with ESMTPSA id n19-20020a056a00213300b00528c34f514dsm1180743pfj.121.2022.07.14.02.39.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Jul 2022 02:39:27 -0700 (PDT) From: Pin-Yen Lin To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter Cc: Hsin-Yi Wang , Allen Chen , Pin-Yen Lin , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] drm/bridge: it6505: Power on downstream device in .atomic_enable Date: Thu, 14 Jul 2022 17:39:20 +0800 Message-Id: <20220714173715.v2.1.I85af54e9ceda74ec69f661852825845f983fc343@changeid> X-Mailer: git-send-email 2.37.0.144.g8ac04bfd2-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 DPCD DP_SET_POWER_D0 command to the monitor in .atomic_enable callback. Without this command, some monitors won't show up again after changing the resolution. Fixes: 46ca7da7f1e8 ("drm/bridge: it6505: Send DPCD SET_POWER to downstream= ") Signed-off-by: Pin-Yen Lin --- Changes in v2: - Update the typo in the summary (power on --> power off) - Re-write the commit message to make it clearer. drivers/gpu/drm/bridge/ite-it6505.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/i= te-it6505.c index 4b673c4792d7..e5626035f311 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -2945,6 +2945,9 @@ 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); --=20 2.37.0.144.g8ac04bfd2-goog