From patchwork Wed Oct 18 04:36:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Sung X-Patchwork-Id: 735988 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9CC545CBB for ; Wed, 18 Oct 2023 04:37:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="QuoO8tcu" Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF75F12C; Tue, 17 Oct 2023 21:37:04 -0700 (PDT) X-UUID: f83243386d6f11eea33bb35ae8d461a2-20231018 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=mEL9/fhI8H1OiHxV2ftXuZpY23MuQ9WuJPFzjUyfFPI=; b=QuoO8tcurqJzsdwQUcvzVxubSjDyovMjUxaREOU6KD6IF/aEm9xLa5TlydkNEGGL9U9b8cwjxDGJAst7KiPV3cCGxfluYA3myvF/wc3X4k+XUCgMDDL96KuqhM+Mwh67YjYeW4CrrSqtGEFGJGm+OCEvO8Ze4bp1x5tWgoiswaE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.32, REQID:27fb2572-d02d-41d3-8e1d-b5f744663824, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:5f78ec9, CLOUDID:c654ecf0-9a6e-4c39-b73e-f2bc08ca3dc5, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File: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: f83243386d6f11eea33bb35ae8d461a2-20231018 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 907582089; Wed, 18 Oct 2023 12:36:56 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 18 Oct 2023 12:36:55 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 18 Oct 2023 12:36:55 +0800 From: Hsiao Chien Sung To: AngeloGioacchino Del Regno , "CK Hu" , Krzysztof Kozlowski , Matthias Brugger , Rob Herring CC: Chun-Kuang Hu , Philipp Zabel , David Airlie , Daniel Vetter , Fei Shao , Sean Paul , Johnson Wang , "Nancy . Lin" , Moudy Ho , Hsiao Chien Sung , "Jason-JH . Lin" , Nathan Lu , , , , , Subject: [PATCH v9 21/23] drm/mediatek: Fix underrun in VDO1 when switches off the layer Date: Wed, 18 Oct 2023 12:36:48 +0800 Message-ID: <20231018043650.22532-22-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231018043650.22532-1-shawn.sung@mediatek.com> References: <20231018043650.22532-1-shawn.sung@mediatek.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--0.429600-8.000000 X-TMASE-MatchedRID: aRklFmtZ23BQlz7zzALRPqKa0xB73sAA7yWPaQc4INS0rcU5V/oSe8Ht HEmxq9+YYM3P0vRsc0DnftxNodBrx0c58yUI8WvNQ4srjeRbxTZCX8V1FiRRkjdlsYL2g/87xhL ap7By3FlX6UIPOG+iLYAGGZdCG6IYHxPMjOKY7A8LbigRnpKlKZvjAepGmdoOuzWZSe9bpwlKMn xvHPr3Lj/S/4Fp/m7C70j4gBQf6c8A81qNtiL9iCjCD/8vFIPkWsiUW0takmD4VH37RoClPds5P cWL6yHKSZrfNhP3sgUBh9AgBSEFrJm+YJspVvj2xkvrHlT8euJ0YHKn7N1oOA== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--0.429600-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: B69116BBDFA26A38753769A567F83B654D12FAFD761723071AD6C13AB233A24B2000:8 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H5, RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Do not reset Merge while using CMDQ because reset API doesn't wait for frame done event as CMDQ does and could lead to underrun when the layer is switching off. Fixes: aaf94f7c3ae6 ("drm/mediatek: Add display merge async reset control") Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu Signed-off-by: Hsiao Chien Sung --- drivers/gpu/drm/mediatek/mtk_disp_merge.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c index fd14a59bc951..c19fb1836034 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c @@ -104,7 +104,7 @@ void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt) mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CTRL); - if (priv->async_clk) + if (!cmdq_pkt && priv->async_clk) reset_control_reset(priv->reset_ctl); }