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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 C657AC282CE for ; Mon, 11 Feb 2019 15:06:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96CAA217D9 for ; Mon, 11 Feb 2019 15:06:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549897606; bh=Xh/W8Mep+ovTfl4ZoIoSFsGXtAw3avb9e1ZygVJE1CQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jOa0bLUiWU20N7Hin/kkuM6Sx0wxCxvK+NWxEnSt3j5zj4RUJybZAPaWyYRro9uJi U5FlE4yH0hvvpBNKPgvB6IGhggwE/7LtZW/ZvGVYENroNIZtSkI3/p119ui3DKvWbs 6y/c6P4zJFFB0w6PPQmE6El2j6h7MB1qedNpxU4k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391256AbfBKPGp (ORCPT ); Mon, 11 Feb 2019 10:06:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:56320 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391246AbfBKPGo (ORCPT ); Mon, 11 Feb 2019 10:06:44 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 D1E4E222B8; Mon, 11 Feb 2019 15:06:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549897603; bh=Xh/W8Mep+ovTfl4ZoIoSFsGXtAw3avb9e1ZygVJE1CQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HILwZOKmUl6FYKOdrZ7zq06e9JxTUOJ2ja5iqPB0zjmA3+LIXblsvN2zVo4LuCiP1 1FQT/zBL5G0KirHRFsFPFN6PGmP5VEEqB1NkDvR/J3v9nH8EK2gk7WMp5NC2HEtW3W pGSW9UlH18K63yvwi/77EdFboP7TUZS4/qkogFrQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Boris Brezillon , Eric Anholt , Sasha Levin Subject: [PATCH 4.9 011/137] drm/vc4: ->x_scaling[1] should never be set to VC4_SCALING_NONE Date: Mon, 11 Feb 2019 15:18:12 +0100 Message-Id: <20190211141813.045445906@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141811.964925535@linuxfoundation.org> References: <20190211141811.964925535@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 0560054da5673b25d56bea6c57c8d069673af73b ] For the YUV conversion to work properly, ->x_scaling[1] should never be set to VC4_SCALING_NONE, but vc4_get_scaling_mode() might return VC4_SCALING_NONE if the horizontal scaling ratio exactly matches the horizontal subsampling factor. Add a test to turn VC4_SCALING_NONE into VC4_SCALING_PPF when that happens. The old ->x_scaling[0] adjustment is dropped as I couldn't find any mention to this constraint in the spec and it's proven to be unnecessary (I tested various multi-planar YUV formats with scaling disabled, and all of them worked fine without this adjustment). Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.") Signed-off-by: Boris Brezillon Reviewed-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20181109102633.32603-1-boris.brezillon@bootlin.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/vc4/vc4_plane.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 70051bf0ee5c..0376c0c2fc66 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -345,12 +345,14 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state) vc4_get_scaling_mode(vc4_state->src_h[1], vc4_state->crtc_h); - /* YUV conversion requires that horizontal scaling be enabled, - * even on a plane that's otherwise 1:1. Looks like only PPF - * works in that case, so let's pick that one. + /* YUV conversion requires that horizontal scaling be enabled + * on the UV plane even if vc4_get_scaling_mode() returned + * VC4_SCALING_NONE (which can happen when the down-scaling + * ratio is 0.5). Let's force it to VC4_SCALING_PPF in this + * case. */ - if (vc4_state->is_unity) - vc4_state->x_scaling[0] = VC4_SCALING_PPF; + if (vc4_state->x_scaling[1] == VC4_SCALING_NONE) + vc4_state->x_scaling[1] = VC4_SCALING_PPF; } else { vc4_state->is_yuv = false; vc4_state->x_scaling[1] = VC4_SCALING_NONE; -- 2.19.1