From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4DDCB184541 for ; Mon, 12 Aug 2024 14:47:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723474028; cv=none; b=U8NAWSe5IcJdF0w6WjEQ92D2s35u5DOlpUlR7ls/GWQEJ9E5oaZeh3t7KiofGHNHcImLCM32UsLr/p6Moi8NjE3GM7U39lAP2NNZAt6q4cjjd89c0sBb3hcHAbXBdHwp7RSVXhJM76dRDpONvczHWeSQkAlSc/Ttz/FjefTV9OI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723474028; c=relaxed/simple; bh=h9CbbmPWY2FSD9zxh9iG2uzBBSClxuvZ2SasieHR9M4=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=ksToyAPmknO/eShVrabMOENlmLUwNV1RKB5cy/c9pexLFdOoxcyfrSqy4mc6SPfWN2JVl1C7SkhBbNRjfHWcDecJPoZ4eE/KoQpdnf5B/RGVfZUqWjjTFfUwsY31u95FpNLHKE6cWqBQHKDYi+9ALmfITYiFYgNARTp1CJare8k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=inaz8BlW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="inaz8BlW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77612C4AF0F; Mon, 12 Aug 2024 14:47:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723474027; bh=h9CbbmPWY2FSD9zxh9iG2uzBBSClxuvZ2SasieHR9M4=; h=Subject:To:Cc:From:Date:From; b=inaz8BlWtIvm0L+y2WkqjQEt65VkTk86pN/GorNQ1hNeX+F3rKbMX0ESxPew6N/xs brHuV7lzcrcCEoEFTEHosDvpf7QRhLU+lSCRjJ6wq8SUbur/H9fl4Hb3N+BvWsQZE2 78Dcpk7Qxft0Wt7pAjloXEbV2cpXlhEJgzYe6IPI= Subject: FAILED: patch "[PATCH] drm/amd/display: Solve mst monitors blank out problem after" failed to apply to 6.10-stable tree To: Wayne.Lin@amd.com,alexander.deucher@amd.com,jerry.zuo@amd.com Cc: From: Date: Mon, 12 Aug 2024 16:46:58 +0200 Message-ID: <2024081258-femur-antonym-2836@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.10.y git checkout FETCH_HEAD git cherry-pick -x e33697141bac18906345ea46533a240f1ad3cd21 # git commit -s git send-email --to '' --in-reply-to '2024081258-femur-antonym-2836@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^.. Possible dependencies: e33697141bac ("drm/amd/display: Solve mst monitors blank out problem after resume") 1ff6631baeb1 ("drm/amd/display: Prevent IPX From Link Detect and Set Mode") f63f86b5affc ("drm/amd/display: Separate setting and programming of cursor") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e33697141bac18906345ea46533a240f1ad3cd21 Mon Sep 17 00:00:00 2001 From: Wayne Lin Date: Thu, 23 May 2024 12:18:07 +0800 Subject: [PATCH] drm/amd/display: Solve mst monitors blank out problem after resume [Why] In dm resume, we firstly restore dc state and do the mst resume for topology probing thereafter. If we change dpcd DP_MSTM_CTRL value after LT in mst reume, it will cause light up problem on the hub. [How] Revert commit 202dc359adda ("drm/amd/display: Defer handling mst up request in resume"). And adjust the reason to trigger dc_link_detect by DETECT_REASON_RESUMEFROMS3S4. Cc: stable@vger.kernel.org Fixes: 202dc359adda ("drm/amd/display: Defer handling mst up request in resume") Signed-off-by: Wayne Lin Reviewed-by: Fangzhi Zuo Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 98cf523a629e..29af22ddccc9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2583,6 +2583,7 @@ static void resume_mst_branch_status(struct drm_dp_mst_topology_mgr *mgr) ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, DP_MST_EN | + DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC); if (ret < 0) { drm_dbg_kms(mgr->dev, "mst write failed - undocked during suspend?\n"); @@ -3186,7 +3187,7 @@ static int dm_resume(void *handle) } else { mutex_lock(&dm->dc_lock); dc_exit_ips_for_hw_access(dm->dc); - dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD); + dc_link_detect(aconnector->dc_link, DETECT_REASON_RESUMEFROMS3S4); mutex_unlock(&dm->dc_lock); }