From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 8F173C4332B for ; Tue, 26 Jan 2021 04:39:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6648122582 for ; Tue, 26 Jan 2021 04:39:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726823AbhAZEjU (ORCPT ); Mon, 25 Jan 2021 23:39:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:54132 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729412AbhAYO0s (ORCPT ); Mon, 25 Jan 2021 09:26:48 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1D1002228A; Mon, 25 Jan 2021 14:25:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1611584724; bh=Nh0hwKfWuuovNjFuNV1OJrKe8tPMi30Xe/6U1+0epYo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NBi82+G0eQXXvThxyrUpm5lWq+C2YFGflcx2mTBkGyAt3XAlKVGGXd1lGmvf/M+BR sqOUjvWVFbag5dIlZhKyHozBx/C9tBDr4Pvo65vzafbdCwItk2eql9vG878EvGCoiK mtF4crFhPNK9uFUNKNPrNQF9NqcE+Zafqm1tcrWE= Date: Mon, 25 Jan 2021 15:25:22 +0100 From: Greg KH To: Ville Syrjala Cc: intel-gfx@lists.freedesktop.org, stable@vger.kernel.org, Jani Nikula Subject: Re: [PATCH stable-5.10] drm/i915: Only enable DFP 4:4:4->4:2:0 conversion when outputting YCbCr 4:4:4 Message-ID: References: <161149524220215@kroah.com> <20210125132711.27101-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210125132711.27101-1-ville.syrjala@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Mon, Jan 25, 2021 at 03:27:11PM +0200, Ville Syrjala wrote: > From: Ville Syrjälä > > commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32 upstream. > > Let's not enable the 4:4:4->4:2:0 conversion bit in the DFP unless we're > actually outputting YCbCr 4:4:4. It would appear some protocol > converters blindy consult this bit even when the source is outputting > RGB, resulting in a visual mess. > > Cc: # 0e634efd858e: drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/ > Cc: stable@vger.kernel.org > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2914 > Signed-off-by: Ville Syrjälä > Link: https://patchwork.freedesktop.org/patch/msgid/20210111164111.13302-1-ville.syrjala@linux.intel.com > Fixes: 181567aa9f0d ("drm/i915: Do YCbCr 444->420 conversion via DP protocol converters") > Reviewed-by: Jani Nikula > (cherry picked from commit 3170a21f7059c4660c469f59bf529f372a57da5f) > Signed-off-by: Jani Nikula > Link: https://patchwork.freedesktop.org/patch/msgid/20210118154355.24453-1-ville.syrjala@linux.intel.com > (cherry picked from commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32) > --- > Note the extra depdendency on commit 0e634efd858e > ("drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/"). Thanks for this, now queued up. greg k-h