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=unavailable 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 AE2B0C4360C for ; Sun, 6 Oct 2019 17:36:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E88D2080F for ; Sun, 6 Oct 2019 17:36:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383403; bh=RXz6wrou/rLsSHwyEPfyPMYLuJ/X2bB/HTRQZPCvBoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gjdiciWSFOhM4crM+ZnYpSwllKN7x35N2CPTYeT7prhgkybKKPOhCgzSWP3EhEn+Z 0vY7rg8uO+reW9OnxYRwGPkKGWleOeZnmJMmMLuK3XdqqJvfWcFaNrj8TgiIHYbA/5 1nv9CVU/uNQoaK8TrakRtrOhdr1w1ChLWywLsXgE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730321AbfJFRgm (ORCPT ); Sun, 6 Oct 2019 13:36:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:35478 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730309AbfJFRgi (ORCPT ); Sun, 6 Oct 2019 13:36:38 -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 148BF2080F; Sun, 6 Oct 2019 17:36:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383397; bh=RXz6wrou/rLsSHwyEPfyPMYLuJ/X2bB/HTRQZPCvBoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MVtOAKGrjuKmrdLGJaWqRnHb5B5EsB0WNKiya47GnoKz0myN3DFtOO3DG8wYRoH1I 13wy1STMRjT27NWaucPLMBgXuTo3akinBPy1MhKozOd5DipBFSgB1IoM8GAIBNv8bw nuzs9S6gLuJ2QYMxkPpfg5BxsMjY9GUOLK//HJPw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Anthony Koo , Aric Cyr , Leo Li , Alex Deucher , Sasha Levin Subject: [PATCH 5.2 045/137] drm/amd/display: fix issue where 252-255 values are clipped Date: Sun, 6 Oct 2019 19:20:29 +0200 Message-Id: <20191006171212.676664058@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171209.403038733@linuxfoundation.org> References: <20191006171209.403038733@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: Anthony Koo [ Upstream commit 1cbcfc975164f397b449efb17f59d81a703090db ] [Why] When endpoint is at the boundary of a region, such as at 2^0=1 we find that the last segment has a sharp slope and some points are clipped at the top. [How] If end point is 1, which is exactly at the 2^0 region boundary, we need to program an additional region beyond this point. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Leo Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c index 7469333a2c8a5..8166fdbacd732 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c @@ -357,9 +357,10 @@ bool cm_helper_translate_curve_to_hw_format( seg_distr[7] = 4; seg_distr[8] = 4; seg_distr[9] = 4; + seg_distr[10] = 1; region_start = -10; - region_end = 0; + region_end = 1; } for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++) -- 2.20.1