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=-13.1 required=3.0 tests=BAYES_00,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 F2BF6C433DF for ; Mon, 10 Aug 2020 19:33:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE87522B47 for ; Mon, 10 Aug 2020 19:33:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597088007; bh=Z6K4uvy4C7W23CznrC/gasZ1erGhoQ4x23h6wbcUX98=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=wL/5cz/TPp3cDR0gjEw0oKU0Ku4LJBvbO4397Htk1JZ43EzDHX0NKmfmTcyoHrK4p cSDhBVcpVtDPqzl0fZqznjbW7nyusWeRuleeUML4tOKCnAupyjkun0M/khiCFubZNG 062lLGTv9yCMetyV+9wKQd2D8xj1IBzXGbXwgwgU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728891AbgHJTd0 (ORCPT ); Mon, 10 Aug 2020 15:33:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:35640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728471AbgHJTJX (ORCPT ); Mon, 10 Aug 2020 15:09:23 -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 4372B22B49; Mon, 10 Aug 2020 19:09:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086563; bh=Z6K4uvy4C7W23CznrC/gasZ1erGhoQ4x23h6wbcUX98=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jf7Q2dzHhdFCZMsThE3Y6aMHd55nuHrVl7QGk3+1ljqgoahosDQm1TmnF8F7wiXvN Nmmda7Djm+Ag2vL7gAOuNc2xerryx0Jf7DRe5O3Li7FGNkL5aLpcC5QNcj/y2lziDp boNLtoefnWVmw+0WBeG2xWU2HsM7rr7e7fWoTRMU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lyude Paul , Ben Skeggs , Dave Airlie , Sasha Levin , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.8 17/64] drm/nouveau/kms/nv50-: Fix disabling dithering Date: Mon, 10 Aug 2020 15:08:12 -0400 Message-Id: <20200810190859.3793319-17-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200810190859.3793319-1-sashal@kernel.org> References: <20200810190859.3793319-1-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: Lyude Paul [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul Reviewed-by: Ben Skeggs Acked-by: Dave Airlie Link: https://patchwork.freedesktop.org/patch/msgid/20200627194657.156514-6-lyude@redhat.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/dispnv50/head.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c b/drivers/gpu/drm/nouveau/dispnv50/head.c index 8f6455697ba72..ed6819519f6d8 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head.c +++ b/drivers/gpu/drm/nouveau/dispnv50/head.c @@ -84,18 +84,20 @@ nv50_head_atomic_check_dither(struct nv50_head_atom *armh, { u32 mode = 0x00; - if (asyc->dither.mode == DITHERING_MODE_AUTO) { - if (asyh->base.depth > asyh->or.bpc * 3) - mode = DITHERING_MODE_DYNAMIC2X2; - } else { - mode = asyc->dither.mode; - } + if (asyc->dither.mode) { + if (asyc->dither.mode == DITHERING_MODE_AUTO) { + if (asyh->base.depth > asyh->or.bpc * 3) + mode = DITHERING_MODE_DYNAMIC2X2; + } else { + mode = asyc->dither.mode; + } - if (asyc->dither.depth == DITHERING_DEPTH_AUTO) { - if (asyh->or.bpc >= 8) - mode |= DITHERING_DEPTH_8BPC; - } else { - mode |= asyc->dither.depth; + if (asyc->dither.depth == DITHERING_DEPTH_AUTO) { + if (asyh->or.bpc >= 8) + mode |= DITHERING_DEPTH_8BPC; + } else { + mode |= asyc->dither.depth; + } } asyh->dither.enable = mode; -- 2.25.1