From patchwork Fri Aug 6 02:30:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Derong Liu X-Patchwork-Id: 493063 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, 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 8D803C4320A for ; Fri, 6 Aug 2021 02:32:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6CA5960F35 for ; Fri, 6 Aug 2021 02:32:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238891AbhHFCcv (ORCPT ); Thu, 5 Aug 2021 22:32:51 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:47220 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S230247AbhHFCct (ORCPT ); Thu, 5 Aug 2021 22:32:49 -0400 X-UUID: 09e01316fb6c4820b29f97c1ac351a03-20210806 X-UUID: 09e01316fb6c4820b29f97c1ac351a03-20210806 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1892728303; Fri, 06 Aug 2021 10:32:32 +0800 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 6 Aug 2021 10:32:30 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Fri, 6 Aug 2021 10:32:30 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 6 Aug 2021 10:32:29 +0800 From: Derong Liu To: Chaotian Jing , Ulf Hansson , Matthias Brugger CC: , , , , , Peng Zhou , Derong Liu Subject: [PATCH] mmc: mediatek: add wait dma stop done flow Date: Fri, 6 Aug 2021 10:30:55 +0800 Message-ID: <20210806023055.29524-1-derong.liu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: mtk13858 it needs to wait for dma stop done after set dma stop. Signed-off-by: mtk13858 --- drivers/mmc/host/mtk-sd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 4dfc246c5f95..1dfd2842471b 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -2339,6 +2339,8 @@ static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery) if (recovery) { sdr_set_field(host->base + MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1); + while (readl(host->base + MSDC_DMA_CFG) & MSDC_DMA_CFG_STS) + cpu_relax(); msdc_reset_hw(host); } }