From patchwork Mon Apr 28 13:34:21 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ivan T. Ivanov" X-Patchwork-Id: 4077621 Return-Path: X-Original-To: patchwork-linux-arm-msm@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 51AFE9F169 for ; Mon, 28 Apr 2014 13:48:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8BA66202AE for ; Mon, 28 Apr 2014 13:48:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC7C32028D for ; Mon, 28 Apr 2014 13:48:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932292AbaD1NgE (ORCPT ); Mon, 28 Apr 2014 09:36:04 -0400 Received: from ns.mm-sol.com ([37.157.136.199]:58311 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756048AbaD1NfX (ORCPT ); Mon, 28 Apr 2014 09:35:23 -0400 Received: from iivanov-dev.wifi.mm-sol.com (unknown [37.157.136.206]) by extserv.mm-sol.com (Postfix) with ESMTPSA id 002AEC7A3; Mon, 28 Apr 2014 16:35:19 +0300 (EEST) From: "Ivan T. Ivanov" To: Felipe Balbi Cc: "Ivan T. Ivanov" , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Pavankumar Kondeti Subject: [PATCH v8 18/20] usb: phy: msm: Handle disconnect events Date: Mon, 28 Apr 2014 16:34:21 +0300 Message-Id: <1398692063-11372-19-git-send-email-iivanov@mm-sol.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398692063-11372-1-git-send-email-iivanov@mm-sol.com> References: <1398692063-11372-1-git-send-email-iivanov@mm-sol.com> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 From: "Ivan T. Ivanov" Put the transceiver in non-driving mode. Otherwise host may not detect soft-disconnection. Signed-off-by: Ivan T. Ivanov Cc: Pavankumar Kondeti --- drivers/usb/phy/phy-msm-usb.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index 9437bcf..366527e 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -235,6 +235,23 @@ static void ulpi_init(struct msm_otg *motg) } } +static int msm_phy_notify_disconnect(struct usb_phy *phy, + enum usb_device_speed speed) +{ + int val; + + /* + * Put the transceiver in non-driving mode. Otherwise host + * may not detect soft-disconnection. + */ + val = ulpi_read(phy, ULPI_FUNC_CTRL); + val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; + val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; + ulpi_write(phy, val, ULPI_FUNC_CTRL); + + return 0; +} + static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) { int ret; @@ -1626,6 +1643,7 @@ static int msm_otg_probe(struct platform_device *pdev) phy->init = msm_phy_init; phy->set_power = msm_otg_set_power; + phy->notify_disconnect = msm_phy_notify_disconnect; phy->io_ops = &msm_otg_io_ops;