From patchwork Thu May 2 10:38:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?U2hhd24gU3VuZyAo5a6L5a2d6KyZKQ==?= X-Patchwork-Id: 13651589 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D38E6C4345F for ; Thu, 2 May 2024 10:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=/PM/UiobBehiOyRrOqXVuT+UK6qs5vX/FqcSne7B1Y0=; b=m6u32APUi6oKGQ lBvxvp+rhtyBtSlKzF4S9rNy56URDjpqu6g5DgJzdJdWa0VynOX0YGl4Jla25UlUJYQC4pVsd7wex Ah3juPGSkAm166hvFl+y0CRSDVKy66pqr9mqEBwfBtALJN0gHN3wrE91KPmuPAw5WQwMvOF3ZkIwL lt/SAfZArJBEarW1NJY73KPFydkFaRiIWWohbU8aTRNqUMk40guBgFoLyLQjQpTtpMv3mlqpLJmtM pOf5zFNaiVYz1RBbaN33PmvDzkrp25YmdIkgUrzpNcb2jWTTTsCvMZu5KsQLi0lsbojN9wVv3+jtG EdCOkUsH47EkwuH8Oz8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2TrM-0000000CMsn-0m6D; Thu, 02 May 2024 10:40:16 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2Tqj-0000000CMIP-3I9H; Thu, 02 May 2024 10:39:48 +0000 X-UUID: 4391646c087011ef9a78ddf43a9225dc-20240502 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=HWKIlzx1/cJSQoVLkKMEH/Knq2h92AZ//vWfilvYpXQ=; b=m/izBzrMZZcXTE0g9ESr8CVAbgi9l28Es+nCQ01CVCdE9I0fTSOUsQKxLBlJK1bNbHUSlPrAlKF5enfKKLiVNoFz6xG3OdtCh4Mo7avWz0g7xFBGEXHINVs0LsCflaGEsxMAVrQb4Ldhn9deKBNm2iLJjLrfsb36uNHQIun4VCI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.38,REQID:354bb18d-be2b-4683-9fe5-f82da88d34ad,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:82c5f88,CLOUDID:0e335e83-4f93-4875-95e7-8c66ea833d57,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES :1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 4391646c087011ef9a78ddf43a9225dc-20240502 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 543737687; Thu, 02 May 2024 03:39:33 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 2 May 2024 18:38:56 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 2 May 2024 18:38:56 +0800 From: Shawn Sung To: Chun-Kuang Hu , AngeloGioacchino Del Regno CC: Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , Bibby Hsieh , CK Hu , "Nancy . Lin" , Fei Shao , Sean Paul , Jason Chen , , , , , Hsiao Chien Sung Subject: [PATCH v7 06/18] drm/mediatek: Turn off the layers with zero width or height Date: Thu, 2 May 2024 18:38:36 +0800 Message-ID: <20240502103848.5845-7-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20240502103848.5845-1-shawn.sung@mediatek.com> References: <20240502103848.5845-1-shawn.sung@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240502_033938_438166_35091229 X-CRM114-Status: GOOD ( 12.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Hsiao Chien Sung We found that IGT (Intel GPU Tool) will try to commit layers with zero width or height and lead to undefined behaviors in hardware. Disable the layers in such a situation. Fixes: 777b7bc86a0a ("UPSTREAM: drm/mediatek: Add ovl_adaptor support for MT8195") Fixes: fa97fe71f6f9 ("UPSTREAM: drm/mediatek: Add ETHDR support for MT8195") Reviewed-by: CK Hu Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Hsiao Chien Sung --- drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 2 +- drivers/gpu/drm/mediatek/mtk_ethdr.c | 7 ++++++- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c index 02dd7dcdfedb2..2b62d64759181 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c @@ -158,7 +158,7 @@ void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx, merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + idx]; ethdr = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]; - if (!pending->enable) { + if (!pending->enable || !pending->width || !pending->height) { mtk_merge_stop_cmdq(merge, cmdq_pkt); mtk_mdp_rdma_stop(rdma_l, cmdq_pkt); mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c index 156c6ff547e86..4ffd0a0648613 100644 --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -160,7 +160,12 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, if (idx >= 4) return; - if (!pending->enable) { + if (!pending->enable || !pending->width || !pending->height) { + /* + * instead of disabling layer with MIX_SRC_CON directly + * set the size to 0 to avoid screen shift due to mixer + * mode switch (hardware behavior) + */ mtk_ddp_write(cmdq_pkt, 0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(idx)); return; }