From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3238001-1521211505-2-13541883561045026894 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='com', MailFrom='org' X-Spam-charsets: X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-usb-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521211504; b=BfR8BrATUsPUR5nCxmWisE2+965UKh8+4XaJi88miNUbMMw nD4DSZD+VZbldPP4WeWMcn9HI9BHbXxWTfniXqRHfCJKOSsaSc/He6HyjsOUYTYx V9pk18acDPAcS7Bb/zaFkupSpH4XXhzrEP0JnNOHS9qMYgk29W8+skQUS7mmYxtw qPIoVP2MJLiQq4/GoEsaDtS1FWb0oU9v8yGlrID6bcdJ8jDFcZw0LSTWNfj4iw60 FO9KXfMXAJatgcwSsep/G2nUDhu31cvT0cGj7zPFiq3Kd8DESGOHSl2Jiex32Xjz yI4sFbDKsu2ixCzuS2UHxrgVLKuG2u5x7G0ZqOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :mime-version:content-type:sender:list-id; s=arctest; t= 1521211504; bh=+Wxv+iA2NCIvGxAkQW98XAmK6nvI3GgBO1tr+75Qye8=; b=L Dxyk4AM7gLX589vTfBukmHf5TguBzSfSrLL9KHgCWx69x/BQhI6uiuy7zKk89ffe U8oJAQim/4Dd0/dGGHOp/hXFk8FYno6FFzh8njwd+wVG6kqg4KfZb2HpNtZhnsMv 8zrbtDppMZCcXknxT2maZKRquhEXUJZgY8wBtN9MoTGL3phHg/y68YQ2yCEiPdCY YwUNjP1z2wpG0jwUX0eYc9Z4rYnGvXcEV70PlPdzcJXFw37YqQySjFzMlRgPOhUB PYn92XWzY9qTPwQI/MjMWAUQkeAngh0HTGeDcsUSYM3Z3ZrN2b6/ocDJH40CsRLb b25OQlpRzsNRV1U+v4Tvg== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=fail (body has been altered; 1024-bit rsa key sha256) header.d=ti.com header.i=@ti.com header.b=kGGI+VZP x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=ti-com-17Q1; dmarc=fail (p=quarantine,has-list-id=yes,d=quarantine) header.from=ti.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=0 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=ti.com header.result=pass header_is_org_domain=yes Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=fail (body has been altered; 1024-bit rsa key sha256) header.d=ti.com header.i=@ti.com header.b=kGGI+VZP x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=ti-com-17Q1; dmarc=fail (p=quarantine,has-list-id=yes,d=quarantine) header.from=ti.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=0 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=ti.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751943AbeCPOoe (ORCPT ); Fri, 16 Mar 2018 10:44:34 -0400 Received: from fllnx210.ext.ti.com ([198.47.19.17]:36235 "EHLO fllnx210.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751233AbeCPOod (ORCPT ); Fri, 16 Mar 2018 10:44:33 -0400 From: Roger Quadros To: CC: , , Roger Quadros Subject: [PATCH] usb: dwc3: core: Fix broken system suspend/resume on AM437x Date: Fri, 16 Mar 2018 16:44:27 +0200 Message-ID: <1521211467-6872-1-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On TI's AM437x, the DWC3 controller looses state after a system suspend/resume. We are re-initializing the controller but we miss restoring the PRTCAP register. This causes USB host to break on AM437x after a system suspend/resume. Fix this by restoring the PRTCAP register on system resume. Signed-off-by: Roger Quadros --- drivers/usb/dwc3/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index e8890c0..5becd7f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1374,6 +1374,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) if (ret) return ret; + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_resume(dwc); spin_unlock_irqrestore(&dwc->lock, flags); @@ -1384,6 +1385,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) ret = dwc3_core_init(dwc); if (ret) return ret; + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); } break; case DWC3_GCTL_PRTCAP_OTG: -- cheers, -roger Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki