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 864AEC432C1 for ; Tue, 24 Sep 2019 17:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 506D12054F for ; Tue, 24 Sep 2019 17:01:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569344519; bh=RXz6wrou/rLsSHwyEPfyPMYLuJ/X2bB/HTRQZPCvBoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M5LSiuj11VWQ5QcuGJIgZ01s8bTVGM8TWGpI6OPxB1ObYeatCyz0ost7IFFNGc3sz rcaa9Mv0un65FM7axiQwlReZHegZuNg9EaiV2+Pe1PIR4CFkZBXHAb1HdhU7XNr7nf kxos8QC2lTf3rKelmj6rAjIMV8MNjfaDt9v1Cjk4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410007AbfIXRB6 (ORCPT ); Tue, 24 Sep 2019 13:01:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:59698 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2632887AbfIXQnE (ORCPT ); Tue, 24 Sep 2019 12:43:04 -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 5072720872; Tue, 24 Sep 2019 16:43:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343383; bh=RXz6wrou/rLsSHwyEPfyPMYLuJ/X2bB/HTRQZPCvBoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yFc/DJIiwKQYvB6FwneZOvQp/91RIcxs68MGdfTNgixpYX/Kmf3Iwe28eBh7hvSGH kl9DDB3tYyUI2hCbV/smOu4kZaBB7G9gIPiWrCQv9PRrsR35eu9c4etD+0+XTi6lgm A7cQmalKLpEKO+JHjWtetbXzhn0itnUXPy+qQeNk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anthony Koo , Aric Cyr , Leo Li , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.3 30/87] drm/amd/display: fix issue where 252-255 values are clipped Date: Tue, 24 Sep 2019 12:40:46 -0400 Message-Id: <20190924164144.25591-30-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: 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