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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,UNPARSEABLE_RELAY,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 1979EC43381 for ; Wed, 27 Mar 2019 06:24:09 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DD6D2206DF for ; Wed, 27 Mar 2019 06:24:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RzyvDVcI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD6D2206DF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=T3FfdgE6l/UjjAJNQLRRlxfMIF93wOLG8TshufEob1o=; b=RzyvDVcIa6YRPD uza0y863RckXV6YZSO0XhTjKngWsgUnQrpYoqZSznUWCTtScNdbqFMK6+k91h/DuY+/B59wRBRy4c Ir1ZDzUkqWgOqmsa+hA+Iihp2caAPbDymQFv+xwQPOSkX3ctpeRfJT+ctjQQIPz0lPCAfQCWtnryv NAvVh8DtzGUIznKjpqEEvf6jo15TxJQP2AXNAbdT8/TudBo4MZ85ommi5olROkzUoZxkg0FQb4CFR dvc1PlgJO0JFmvpTAWZWDOJDPiVOgzHoQ0NiSYGrtPFdfUBJE7VQ4/y82QSLGBICnY27Uww65RCoW sZxuN8ObOAkNkq36hRgQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h91yk-0006Sx-5x; Wed, 27 Mar 2019 06:24:02 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h91va-0002sN-ER; Wed, 27 Mar 2019 06:20:53 +0000 X-UUID: 2b69fe6e58704334bee7f79533de1583-20190326 X-UUID: 2b69fe6e58704334bee7f79533de1583-20190326 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 2062732469; Tue, 26 Mar 2019 22:19:54 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 26 Mar 2019 23:19:53 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 27 Mar 2019 14:19:52 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 27 Mar 2019 14:19:51 +0800 From: To: , , , Subject: [PATCH v2 18/25] drm/mediatek: add RDMA fifo size error handle Date: Wed, 27 Mar 2019 14:19:14 +0800 Message-ID: <1553667561-25447-19-git-send-email-yongqiang.niu@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1553667561-25447-1-git-send-email-yongqiang.niu@mediatek.com> References: <1553667561-25447-1-git-send-email-yongqiang.niu@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-20190326_232047_334210_73845031 X-CRM114-Status: GOOD ( 10.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, Yongqiang Niu , airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, Bibby.Hsieh@mediatek.com, yt.shen@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Yongqiang Niu This patch add RDMA fifo size error handle rdma fifo size will not always bigger than the calculated threshold if that case happened, we need set fifo size as the threshold Signed-off-by: Yongqiang Niu --- drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c index b0a5cff..ead38ba 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c @@ -137,11 +137,14 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, { unsigned int threshold; unsigned int reg; + unsigned int rdma_fifo_size; struct mtk_disp_rdma *rdma = comp_to_rdma(comp); rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0, 0xfff, width); rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_1, 0xfffff, height); + rdma_fifo_size = RDMA_FIFO_SIZE(rdma); + /* * Enable FIFO underflow since DSI and DPI can't be blocked. * Keep the FIFO pseudo size reset default of 8 KiB. Set the @@ -149,8 +152,12 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, * account for blanking, and with a pixel depth of 4 bytes: */ threshold = width * height * vrefresh * 4 * 7 / 1000000; + + if (threshold > rdma_fifo_size) + threshold = rdma_fifo_size; + reg = RDMA_FIFO_UNDERFLOW_EN | - RDMA_FIFO_PSEUDO_SIZE(RDMA_FIFO_SIZE(rdma)) | + RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) | RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold); writel(reg, comp->regs + DISP_REG_RDMA_FIFO_CON); } -- 1.8.1.1.dirty _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel