From patchwork Wed Aug 28 09:07:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yong Mao X-Patchwork-Id: 11118329 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E016314F7 for ; Wed, 28 Aug 2019 09:07:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C93142189D for ; Wed, 28 Aug 2019 09:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726310AbfH1JHY (ORCPT ); Wed, 28 Aug 2019 05:07:24 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:30971 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726273AbfH1JHX (ORCPT ); Wed, 28 Aug 2019 05:07:23 -0400 X-UUID: c78317828a0b4ae18c00e6d6b0cc0b2d-20190828 X-UUID: c78317828a0b4ae18c00e6d6b0cc0b2d-20190828 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1799987658; Wed, 28 Aug 2019 17:07:18 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 17:07:24 +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, 28 Aug 2019 17:07:24 +0800 From: Yong Mao To: Ulf Hansson CC: Chaotian Jing , Matthias Brugger , , , , , , yong mao Subject: [PATCH] mmc: mediatek: enable SDIO IRQ low level trigger function Date: Wed, 28 Aug 2019 17:07:10 +0800 Message-ID: <1566983230-22481-1-git-send-email-yong.mao@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 From: yong mao SDIO IRQ is not defaultly triggered by low level, but by falling edge. It needs to set related register to enable SDIO IRQ low level trigger function. Otherwise the SDIO IRQ may be lost in some specail condition. Signed-off-by: Yong Mao Signed-off-by: Chaotian Jing --- 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 33f4b63..2444268 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -192,6 +192,7 @@ #define SDC_STS_CMDBUSY (0x1 << 1) /* RW */ #define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */ +#define SDC_DAT1_IRQ_TRIGGER (0x1 << 20) /* RW */ /* SDC_ADV_CFG0 mask */ #define SDC_RX_ENHANCE_EN (0x1 << 20) /* RW */ @@ -1568,6 +1569,7 @@ static void msdc_init_hw(struct msdc_host *host) /* Config SDIO device detect interrupt function */ sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); /* Configure to default data timeout */ sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3);