From patchwork Fri Jul 26 09:18:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 2833928 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C9D849F4D4 for ; Fri, 26 Jul 2013 09:21:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EC8392013B for ; Fri, 26 Jul 2013 09:21:12 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9FE242013A for ; Fri, 26 Jul 2013 09:21:11 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V2eCW-0007U7-EP; Fri, 26 Jul 2013 09:20:41 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V2eCH-0002kO-UA; Fri, 26 Jul 2013 09:20:26 +0000 Received: from ch1ehsobe006.messaging.microsoft.com ([216.32.181.186] helo=ch1outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V2eBl-0002dO-BQ for linux-arm-kernel@lists.infradead.org; Fri, 26 Jul 2013 09:19:58 +0000 Received: from mail55-ch1-R.bigfish.com (10.43.68.241) by CH1EHSOBE017.bigfish.com (10.43.70.67) with Microsoft SMTP Server id 14.1.225.22; Fri, 26 Jul 2013 09:19:32 +0000 Received: from mail55-ch1 (localhost [127.0.0.1]) by mail55-ch1-R.bigfish.com (Postfix) with ESMTP id E6D1146019B; Fri, 26 Jul 2013 09:19:31 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz1de098h1de097h8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h1354h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e23h1155h) Received: from mail55-ch1 (localhost.localdomain [127.0.0.1]) by mail55-ch1 (MessageSwitch) id 1374830369892616_7855; Fri, 26 Jul 2013 09:19:29 +0000 (UTC) Received: from CH1EHSMHS040.bigfish.com (snatpool2.int.messaging.microsoft.com [10.43.68.235]) by mail55-ch1.bigfish.com (Postfix) with ESMTP id D4410C004A; Fri, 26 Jul 2013 09:19:29 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CH1EHSMHS040.bigfish.com (10.43.69.249) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 26 Jul 2013 09:19:28 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.136.1; Fri, 26 Jul 2013 09:19:27 +0000 Received: from localhost.localdomain (nchen-desktop.ap.freescale.net [10.192.242.40]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r6Q9IVUW015357; Fri, 26 Jul 2013 02:19:24 -0700 From: Peter Chen To: Subject: [PATCH v13 13/14] usb: chipidea: udc: .pullup is valid when vbus is on at CI_HDRC_PULLUP_ON_VBUS Date: Fri, 26 Jul 2013 17:18:29 +0800 Message-ID: <1374830310-21765-14-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1374830310-21765-1-git-send-email-peter.chen@freescale.com> References: <1374830310-21765-1-git-send-email-peter.chen@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130726_051953_530283_376E1314 X-CRM114-Status: GOOD ( 12.00 ) X-Spam-Score: -2.6 (--) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, mkl@pengutronix.de, kernel@pengutronix.de, maxime.ripard@free-electrons.com, shawn.guo@linaro.org, festevam@gmail.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When the flag CI_HDRC_PULLUP_ON_VBUS is set, .pullup should only be called when the vbus is active. When the CI_HDRC_PULLUP_ON_VBUS is set, the controller only begins to run when the vbus is on, So, it is only meaningful software set pullup/pulldown after the controller begins to run. Tested-by: Marek Vasut Signed-off-by: Peter Chen --- drivers/usb/chipidea/udc.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 45abf4d..b7ead5f 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1514,6 +1514,10 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on) { struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); + if ((ci->platdata->flags & CI_HDRC_PULLUP_ON_VBUS) + && !ci->vbus_active) + return -EOPNOTSUPP; + if (is_on) hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS); else