From nobody Fri Dec 19 18:43:33 2025 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 19C6DC433FE for ; Sat, 22 Oct 2022 08:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232861AbiJVIGt (ORCPT ); Sat, 22 Oct 2022 04:06:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232937AbiJVIAY (ORCPT ); Sat, 22 Oct 2022 04:00:24 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 876332670E7; Sat, 22 Oct 2022 00:50:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B95276092A; Sat, 22 Oct 2022 07:48:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98645C433C1; Sat, 22 Oct 2022 07:48:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666424928; bh=phSnUqnY7Kv4or2QaTwjWCnYha4ABTmtG8iuKHhbVc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rleCEOgD592SzoCgauYcseqt2AX0DcYo0TWJ61G2jm+n6S7tAcdO3foLjLMhZu2Du IqyFII2/WID2jootnTYPlrVDOgo/f2JRPg41dWMiLDzbek/uoqooJbbYsXGKB+Q7Lj En8I2etcMLmQ6YKG7avpxIo4gifTjJ2ETz2bZnuE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pin-Yen Lin , Allen Chen , Robert Foss , Sasha Levin Subject: [PATCH 5.19 299/717] drm/bridge: it6505: Power on downstream device in .atomic_enable Date: Sat, 22 Oct 2022 09:22:58 +0200 Message-Id: <20221022072505.851111038@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221022072415.034382448@linuxfoundation.org> References: <20221022072415.034382448@linuxfoundation.org> User-Agent: quilt/0.67 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" From: Pin-Yen Lin [ Upstream commit fbc1fdaa8338ec4ebd862d918a0ce3e12033e8a3 ] 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 Reviewed-by: Allen Chen Fixes: 46ca7da7f1e8 ("drm/bridge: it6505: Send DPCD SET_POWER to downstream= ") Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220714173715.v2.1.I85= af54e9ceda74ec69f661852825845f983fc343@changeid Signed-off-by: Sasha Levin --- 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 2.35.1