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Thu, 14 May 2020 15:34:44 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 14 May 2020 15:34:44 +0800 Message-ID: <1589441605.28160.27.camel@mhfsdcap03> Subject: Re: [PATCH] usb: musb: mediatek: add reset FADDR to zero in reset interrupt handle From: Min Guo To: Macpaul Lin Date: Thu, 14 May 2020 15:33:25 +0800 In-Reply-To: <1589428872-29282-1-git-send-email-macpaul.lin@mediatek.com> References: <1589428872-29282-1-git-send-email-macpaul.lin@mediatek.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: 3929ED25672ED9116AC7BC7CCB30D4C22ADBA5D38237F4E1188FC580E959644C2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200514_003455_846515_6D66EAA0 X-CRM114-Status: GOOD ( 11.51 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mediatek WSD Upstream , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Hans de Goede , Matthias Brugger , Chunfeng Yun , linux-mediatek@lists.infradead.org, Macpaul Lin , Bin Liu , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Thu, 2020-05-14 at 12:01 +0800, Macpaul Lin wrote: > When receiving reset interrupt, FADDR need to be reset to zero in > periphearl mode. Otherwise ep0 cannot do enumeration when re-pluging USB > cable. > > Signed-off-by: Macpaul Lin > --- > drivers/usb/musb/mediatek.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c > index 6196b0e..eebeadd 100644 > --- a/drivers/usb/musb/mediatek.c > +++ b/drivers/usb/musb/mediatek.c > @@ -208,6 +208,12 @@ static irqreturn_t generic_interrupt(int irq, void *__hci) > musb->int_rx = musb_clearw(musb->mregs, MUSB_INTRRX); > musb->int_tx = musb_clearw(musb->mregs, MUSB_INTRTX); > > + if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) { > + /* ep0 FADDR must be 0 when (re)entering peripheral mode */ > + musb_ep_select(musb->mregs, 0); > + musb_writeb(musb->mregs, MUSB_FADDR, 0); > + } > + > if (musb->int_usb || musb->int_tx || musb->int_rx) > retval = musb_interrupt(musb); > Acked-by:Min Guo _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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=-8.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_2 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 4DC97C433E4 for ; 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Thu, 14 May 2020 07:34:57 +0000 X-UUID: b17acf61df3048af9143edd2974d90aa-20200513 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=/nREqLi1Ldl8sd0riITmmpWJKuTNyeKnEZWI4u7Mg0Y=; b=bg9Pgjd9KHnY+znNILPTWZKAHNkxlugL4jlyX1guMYRskgMMgE8jl+Z+r8xM7pRv1NEVrIcjRn4BqJf2uQJ1Au8l+So/+zDkV+X5uR+UqUo8X1Kc3UcAJ/01yUKgXKWHE887B4wOsDD4XISz7fjLG+OXJ+Kekile5fcawNQIdZk=; X-UUID: b17acf61df3048af9143edd2974d90aa-20200513 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 2071330438; Wed, 13 May 2020 23:34:51 -0800 Received: from MTKMBS31N1.mediatek.inc (172.27.4.69) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 14 May 2020 00:34:46 -0700 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS31N1.mediatek.inc (172.27.4.69) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 14 May 2020 15:34:44 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 14 May 2020 15:34:44 +0800 Message-ID: <1589441605.28160.27.camel@mhfsdcap03> Subject: Re: [PATCH] usb: musb: mediatek: add reset FADDR to zero in reset interrupt handle From: Min Guo To: Macpaul Lin Date: Thu, 14 May 2020 15:33:25 +0800 In-Reply-To: <1589428872-29282-1-git-send-email-macpaul.lin@mediatek.com> References: <1589428872-29282-1-git-send-email-macpaul.lin@mediatek.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: 3929ED25672ED9116AC7BC7CCB30D4C22ADBA5D38237F4E1188FC580E959644C2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200514_003455_846515_6D66EAA0 X-CRM114-Status: GOOD ( 11.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mediatek WSD Upstream , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Hans de Goede , Matthias Brugger , Chunfeng Yun , linux-mediatek@lists.infradead.org, Macpaul Lin , Bin Liu , 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 On Thu, 2020-05-14 at 12:01 +0800, Macpaul Lin wrote: > When receiving reset interrupt, FADDR need to be reset to zero in > periphearl mode. Otherwise ep0 cannot do enumeration when re-pluging USB > cable. > > Signed-off-by: Macpaul Lin > --- > drivers/usb/musb/mediatek.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c > index 6196b0e..eebeadd 100644 > --- a/drivers/usb/musb/mediatek.c > +++ b/drivers/usb/musb/mediatek.c > @@ -208,6 +208,12 @@ static irqreturn_t generic_interrupt(int irq, void *__hci) > musb->int_rx = musb_clearw(musb->mregs, MUSB_INTRRX); > musb->int_tx = musb_clearw(musb->mregs, MUSB_INTRTX); > > + if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) { > + /* ep0 FADDR must be 0 when (re)entering peripheral mode */ > + musb_ep_select(musb->mregs, 0); > + musb_writeb(musb->mregs, MUSB_FADDR, 0); > + } > + > if (musb->int_usb || musb->int_tx || musb->int_rx) > retval = musb_interrupt(musb); > Acked-by:Min Guo _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel