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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 3476EC432C1 for ; Tue, 24 Sep 2019 16:44:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0926C21928 for ; Tue, 24 Sep 2019 16:44:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343482; bh=XBtLILC1EqGpUwxx8Twbl8rVA44ne2zeh7juqbZ4Re4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jzBkttsEgrqGR6J2UhVoMNenrAxUlA4ScmbZoIYn1GPHhJ3PyU8KhZIRNdpfB1Qj9 dfQ+NxJTrBIrOUbFDiZ4MejNZ/wkgypq9uog6DxAlKI6dQw3aMpjjdgyXCf97/vnE6 ngaPHwtUmtgRFFIe/EWkXFuRQnpQkwlHLMBoyQ6Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404882AbfIXQok (ORCPT ); Tue, 24 Sep 2019 12:44:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:33828 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409865AbfIXQoi (ORCPT ); Tue, 24 Sep 2019 12:44:38 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DCC5B217D9; Tue, 24 Sep 2019 16:44:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343477; bh=XBtLILC1EqGpUwxx8Twbl8rVA44ne2zeh7juqbZ4Re4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LRZK+rpPdZoD6LRxhDXDRs1Y7n+CEvlecBOxjSOeX8Gev3eh6uebuJcGXffFNYzIV H3gMzaU2UbZ2isOQ3lYfOecec5kLSR/9bbKVNVwvWzbWZL3oClCVpMYf2ld+/qwWRy wp3VJod7J1Ul1ktlXb/W1VV8Cy5jXpEf9EQhDSKA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yogesh Mohan Marimuthu , Anthony Koo , Bhawanpreet Lakha , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.3 62/87] drm/amd/display: fix trigger not generated for freesync Date: Tue, 24 Sep 2019 12:41:18 -0400 Message-Id: <20190924164144.25591-62-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190924164144.25591-1-sashal@kernel.org> References: <20190924164144.25591-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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