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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 C0113C4360C for ; Sun, 6 Oct 2019 17:41:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 957D120862 for ; Sun, 6 Oct 2019 17:41:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383694; bh=XBtLILC1EqGpUwxx8Twbl8rVA44ne2zeh7juqbZ4Re4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=O8wBxTj+HefCw8FP1Q7WQs97Mr9+N7dPTMgiCdp9UKiPwKE4WdVWX8Txe2rST7hRG RxGm5Cc7aKBpliPYKiTTymfhQ2oSn0eT8vYayRE0LwTWjWk9Gr/7GYTxrSgGEMiQo2 3xW7v7X2lClrGIpF1T1nDQOKO3sARtrsuKAxX6Rg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731224AbfJFRld (ORCPT ); Sun, 6 Oct 2019 13:41:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:41084 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731207AbfJFRl2 (ORCPT ); Sun, 6 Oct 2019 13:41:28 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F3E2D2053B; Sun, 6 Oct 2019 17:41:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383687; bh=XBtLILC1EqGpUwxx8Twbl8rVA44ne2zeh7juqbZ4Re4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k3uJhtWFJM+X6O3FMpbCdI5j0LKVajNqOhKgEJv/e3grJRj3V6bQx6TTZU2u/pN3K sCrAHf4+8L7lQVhIs6scqw2wpdz8u5RmrdTpBkevj2T9OCDNQDPZmTEeS8vT0FjWDo WlublA+8J1w+9TDlesCeKvafzpciIKtCw1maI+Gg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yogesh Mohan Marimuthu , Anthony Koo , Bhawanpreet Lakha , Alex Deucher , Sasha Levin Subject: [PATCH 5.3 058/166] drm/amd/display: fix trigger not generated for freesync Date: Sun, 6 Oct 2019 19:20:24 +0200 Message-Id: <20191006171218.023647315@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171212.850660298@linuxfoundation.org> References: <20191006171212.850660298@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yogesh Mohan Marimuthu [ Upstream commit 1e7f100ce8c0640634b794604880d9204480c9f1 ] [Why] In newer hardware MANUAL_FLOW_CONTROL is not a trigger bit. Due to this front porch is fixed and in these hardware freesync does not work. [How] Change the programming to generate a pulse so that the event will be triggered, front porch will be cut short and freesync will work. Signed-off-by: Yogesh Mohan Marimuthu Reviewed-by: Anthony Koo Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index a546c2bc9129c..e365f2dd7f9a9 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -824,6 +824,9 @@ void optc1_program_manual_trigger(struct timing_generator *optc) REG_SET(OTG_MANUAL_FLOW_CONTROL, 0, MANUAL_FLOW_CONTROL, 1); + + REG_SET(OTG_MANUAL_FLOW_CONTROL, 0, + MANUAL_FLOW_CONTROL, 0); } -- 2.20.1