From patchwork Fri May 8 20:46:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 11537579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 364A015E6 for ; Fri, 8 May 2020 20:49:00 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 152BB2184D for ; Fri, 8 May 2020 20:49:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Hl6gPRtB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 152BB2184D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1280E6EB77; Fri, 8 May 2020 20:48:53 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from us-smtp-delivery-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) by gabe.freedesktop.org (Postfix) with ESMTPS id D0AD76EB75 for ; Fri, 8 May 2020 20:48:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588970929; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FllY9C8WQ63gseKoLDYxeIQ9ojaIJYshJpy1blS9cfQ=; b=Hl6gPRtBRajaCZfQagoeezDn6PO2BA9CCreKJVO+vTtWG5B69DVWI5Lfa5ehn2P74rMnu4 8ZW7txM6DniECtunKe+017OiGusV5Dxd3WkR5n8LI/UUkh32apYJPf9Kd04UmcdKYgZgeI lO5WE4GX91+5ow+AIIyHnEmUkdGw1Rg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-264-X-Uq0iT-N3CXgR2b81LX4A-1; Fri, 08 May 2020 16:48:46 -0400 X-MC-Unique: X-Uq0iT-N3CXgR2b81LX4A-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id ADC791005510; Fri, 8 May 2020 20:48:44 +0000 (UTC) Received: from Ruby.redhat.com (ovpn-118-29.rdu2.redhat.com [10.10.118.29]) by smtp.corp.redhat.com (Postfix) with ESMTP id 904F65D9CA; Fri, 8 May 2020 20:48:43 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [RFC v4 07/12] drm/nouveau/kms/nv50-: Fix disabling dithering Date: Fri, 8 May 2020 16:46:57 -0400 Message-Id: <20200508204751.155488-8-lyude@redhat.com> In-Reply-To: <20200508204751.155488-1-lyude@redhat.com> References: <20200508204751.155488-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Peteris Rudzusiks , Ben Skeggs , Thomas Zimmermann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 --- 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 e29ea40e7c33..72bc3bce396a 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;