From patchwork Wed Mar 18 13:55:58 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Quadros X-Patchwork-Id: 6039761 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6DD77BF90F for ; Wed, 18 Mar 2015 13:58:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9ADBC204E7 for ; Wed, 18 Mar 2015 13:58:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B2536204A9 for ; Wed, 18 Mar 2015 13:58:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964911AbbCRN6W (ORCPT ); Wed, 18 Mar 2015 09:58:22 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:48622 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933552AbbCRN42 (ORCPT ); Wed, 18 Mar 2015 09:56:28 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id t2IDuLTS029335; Wed, 18 Mar 2015 08:56:21 -0500 Received: from DLEE70.ent.ti.com (dlee70.ent.ti.com [157.170.170.113]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t2IDuKOJ021763; Wed, 18 Mar 2015 08:56:20 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.224.2; Wed, 18 Mar 2015 08:56:20 -0500 Received: from rockdesk.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t2IDu3kI005491; Wed, 18 Mar 2015 08:56:17 -0500 From: Roger Quadros To: , , CC: , , , , , , , Roger Quadros Subject: [RFC][PATCH 4/9] usb: otg: hub: Notify OTG fsm when A device sets b_hnp_enable Date: Wed, 18 Mar 2015 15:55:58 +0200 Message-ID: <1426686963-11613-5-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1426686963-11613-1-git-send-email-rogerq@ti.com> References: <1426686963-11613-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 This is the a_set_b_hnp_enable flag in the OTG state machine diagram and must be set when the A-Host has successfully set the b_hnp_enable feature of the OTG-B-Peripheral attached to it. When this bit changes we kick our OTG FSM to make note of the change and act accordingly. Signed-off-by: Roger Quadros --- drivers/usb/core/hub.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index d7c3d5a..ab0d498 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -2270,6 +2271,9 @@ static int usb_enumerate_device_otg(struct usb_device *udev) "can't set HNP mode: %d\n", err); bus->b_hnp_enable = 0; + } else { + /* notify OTG fsm about a_set_b_hnp_enable */ + usb_otg_kick_fsm(udev->bus->controller); } } } @@ -4244,8 +4248,13 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, */ if (!hdev->parent) { delay = HUB_ROOT_RESET_TIME; - if (port1 == hdev->bus->otg_port) + if (port1 == hdev->bus->otg_port) { hdev->bus->b_hnp_enable = 0; +#ifdef CONFIG_USB_OTG + /* notify OTG fsm about a_set_b_hnp_enable change */ + usb_otg_kick_fsm(hdev->bus->controller); +#endif + } } /* Some low speed devices have problems with the quick delay, so */