From patchwork Fri Jun 14 05:26:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jjian Zhou X-Patchwork-Id: 10994297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2357A13AF for ; Fri, 14 Jun 2019 05:26:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 123FE27CEA for ; Fri, 14 Jun 2019 05:26:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0268027D0C; Fri, 14 Jun 2019 05:26:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 84D9A27CEA for ; Fri, 14 Jun 2019 05:26:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725836AbfFNF0W (ORCPT ); Fri, 14 Jun 2019 01:26:22 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:23345 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725767AbfFNF0W (ORCPT ); Fri, 14 Jun 2019 01:26:22 -0400 X-UUID: 2d7c01dfa82c4ee29a17adb5923a69cb-20190614 X-UUID: 2d7c01dfa82c4ee29a17adb5923a69cb-20190614 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1271578018; Fri, 14 Jun 2019 13:26:16 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 14 Jun 2019 13:26:14 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 14 Jun 2019 13:26:14 +0800 From: Jjian Zhou To: , , , , , , CC: , , jjian zhou Subject: [PATCH 1/2] mmc: mediatek: fix SDIO IRQ interrupt handle flow Date: Fri, 14 Jun 2019 13:26:09 +0800 Message-ID: <1560489970-30467-1-git-send-email-jjian.zhou@mediatek.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-MTK: N Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: jjian zhou SDIO IRQ is triggered by low level. It need disable SDIO IRQ detected function. Otherwise the interrupt register can't be cleared. It will process the interrupt more. Signed-off-by: Jjian Zhou Signed-off-by: Chaotian Jing Signed-off-by: Yong Mao --- drivers/mmc/host/mtk-sd.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) -- 1.9.1 diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index c518cc2..29992ae 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1389,10 +1389,12 @@ static void __msdc_enable_sdio_irq(struct mmc_host *mmc, int enb) struct msdc_host *host = mmc_priv(mmc); spin_lock_irqsave(&host->lock, flags); - if (enb) + if (enb) { sdr_set_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); - else + sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + } else { sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); + } spin_unlock_irqrestore(&host->lock, flags); } @@ -1422,6 +1424,8 @@ static irqreturn_t msdc_irq(int irq, void *dev_id) spin_lock_irqsave(&host->lock, flags); events = readl(host->base + MSDC_INT); event_mask = readl(host->base + MSDC_INTEN); + if ((events & event_mask) & MSDC_INT_SDIOIRQ) + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); /* clear interrupts */ writel(events & event_mask, host->base + MSDC_INT); @@ -1572,10 +1576,7 @@ static void msdc_init_hw(struct msdc_host *host) sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); /* Config SDIO device detect interrupt function */ - if (host->mmc->caps & MMC_CAP_SDIO_IRQ) - sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); - else - sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); /* Configure to default data timeout */ sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3);