From patchwork Thu Nov 29 02:34:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 10703811 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 E583914D6 for ; Thu, 29 Nov 2018 02:35:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DBE3F2E5AE for ; Thu, 29 Nov 2018 02:35:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CFE8E2E6E8; Thu, 29 Nov 2018 02:35:30 +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 79BA52E5AE for ; Thu, 29 Nov 2018 02:35:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727660AbeK2NjD (ORCPT ); Thu, 29 Nov 2018 08:39:03 -0500 Received: from Mailgw01.mediatek.com ([1.203.163.78]:33887 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727237AbeK2NjC (ORCPT ); Thu, 29 Nov 2018 08:39:02 -0500 X-UUID: 6118f19e448d4f0a8f4596c9f3077339-20181129 X-UUID: 6118f19e448d4f0a8f4596c9f3077339-20181129 Received: from mtkcas32.mediatek.inc [(172.27.4.250)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 782366003; Thu, 29 Nov 2018 10:35:04 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by MTKMBS31N1.mediatek.inc (172.27.4.69) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 29 Nov 2018 10:35:02 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 29 Nov 2018 10:35:01 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman CC: Felipe Balbi , Matthias Brugger , Chunfeng Yun , , , , , Subject: [PATCH 3/5] usb: mtu3: fix the issue about SetFeature(U1/U2_Enable) Date: Thu, 29 Nov 2018 10:34:34 +0800 Message-ID: <5a0875cb70e168cf2cc74f2357e9935561a11401.1543458321.git.chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Fix the issue: device doesn't accept LGO_U1/U2: 1. set SW_U1/U2_ACCEPT_ENABLE to eanble controller to accept LGO_U1/U2 by default; 2. enable/disable controller to initiate requests for transition into U1/U2 by SW_U1/U2_REQUEST_ENABLE instead of SW_U1/U2_ACCEPT_ENABLE; Signed-off-by: Chunfeng Yun --- drivers/usb/mtu3/mtu3_core.c | 4 +++- drivers/usb/mtu3/mtu3_gadget_ep0.c | 8 ++++---- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 981e4e8c5c13..1ffc0bc31c1d 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -578,8 +578,10 @@ static void mtu3_regs_init(struct mtu3 *mtu) if (mtu->is_u3_ip) { /* disable LGO_U1/U2 by default */ mtu3_clrbits(mbase, U3D_LINK_POWER_CONTROL, - SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE | SW_U1_REQUEST_ENABLE | SW_U2_REQUEST_ENABLE); + /* enable accept LGO_U1/U2 link command from host */ + mtu3_setbits(mbase, U3D_LINK_POWER_CONTROL, + SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE); /* device responses to u3_exit from host automatically */ mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); /* automatically build U2 link when U3 detect fail */ diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 25216e79cd6e..3c464d8ae023 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -336,9 +336,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U1_ACCEPT_ENABLE; + lpc |= SW_U1_REQUEST_ENABLE; else - lpc &= ~SW_U1_ACCEPT_ENABLE; + lpc &= ~SW_U1_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u1_enable = !!set; @@ -351,9 +351,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U2_ACCEPT_ENABLE; + lpc |= SW_U2_REQUEST_ENABLE; else - lpc &= ~SW_U2_ACCEPT_ENABLE; + lpc &= ~SW_U2_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u2_enable = !!set;