From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423393AbcFIJsO (ORCPT ); Thu, 9 Jun 2016 05:48:14 -0400 Received: from mailout4.w1.samsung.com ([210.118.77.14]:24641 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933541AbcFIJpE (ORCPT ); Thu, 9 Jun 2016 05:45:04 -0400 X-AuditID: cbfec7f4-f796c6d000001486-aa-57593a9b2647 From: Krzysztof Kozlowski To: Ulf Hansson , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Krzysztof Kozlowski , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Liam Girdwood , Mark Brown , Greg Kroah-Hartman , Hans de Goede , Jean-Christophe Plagniol-Villard , Tomi Valkeinen , Heiko Stuebner , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, hzpeterchen@gmail.com Cc: Bartlomiej Zolnierkiewicz Subject: [RFC v4 12/14] EXAMPLE CODE: usb: hub: Power sequence the ports on activation Date: Thu, 09 Jun 2016 11:44:29 +0200 Message-id: <1465465471-28740-13-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1465465471-28740-1-git-send-email-k.kozlowski@samsung.com> References: <1465465471-28740-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrGIsWRmVeSWpSXmKPExsVy+t/xy7qzrSLDDY5M57bYOGM9q8XUh0/Y LCY9ec9sMf/IOVaLiSsnM1v0v1nIatG8eD2bxZvj05ks/j96zWrRdXUTm8W5VysZLV6/MLT4 dqWDyWLT42usFif6PrBaXN41h83iyP9+RovPvUcYLWac38dksWhZK7PF0usXmSwmTF/LYrHu 4Qsmi9a9R9gtTu8usVg//xabxfG14Q7SHmvmrWH0uNzXy+Sxc9Zddo+Vy7+weWxeoeXx6sId Fo9NqzrZPO5c28PmsX/uGnaPzUvqPd7vu8rm0bdlFaPH9mvzmD2O39jO5PF5k1wAfxSXTUpq TmZZapG+XQJXxrGtt5gL7nNU3H25ibmBcTZ7FyMnh4SAicTM7kcsELaYxIV769m6GLk4hASW Mkq8+7gSymlkkmjaOo8ZpIpNwFhi8/IlYAkRgUvsEjcubWcCSTALWEhs3boabKywQITEk0s/ wBpYBFQldvcfZwOxeQU8JGZefcQEsU5O4uSxyawgNidQ/NG9x2D1QgLuEnsXT2abwMi7gJFh FaNoamlyQXFSeq6hXnFibnFpXrpecn7uJkZI7H3Zwbj4mNUhRgEORiUeXs2UiHAh1sSy4src Q4wSHMxKIrw/zCPDhXhTEiurUovy44tKc1KLDzFKc7AoifPO3fU+REggPbEkNTs1tSC1CCbL xMEp1cAY8/My05NJaRMyb6asKmfcn6cX/O+T9K31U2ZxBT6y23H4j2wT9xqL9bnhtVWHp2iy RF84srNmhre849UHfTZ386fsFXVSObX4Ser+1U4J/QbPdWT5ZR6q8x5/ErSpXc7d2Y775fSX P85qrjgoI5sXEOvhcF85yeqo4Ovwm1Vx3z9dPtXc1mSsxFKckWioxVxUnAgA44Ocu7kCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The autodetection of attached USB device might not work on certain boards where the power is delivered externally. These devices also might require a hard reset. Use pwrseq for that in USB hub. Signed-off-by: Krzysztof Kozlowski --- drivers/usb/core/hub.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c421745b84aa..46d9f9aedacc 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -1663,6 +1664,15 @@ static int hub_configure(struct usb_hub *hub, usb_hub_adjust_deviceremovable(hdev, hub->descriptor); + /* FIXME: When do the pre-power-on? */ + /* + for (i = 0; i < maxchild; i++) + pwrseq_pre_power_on(hub->ports[i]->pwrseq); + */ + + for (i = 0; i < maxchild; i++) + pwrseq_post_power_on(hub->ports[i]->pwrseq); + hub_activate(hub, HUB_INIT); return 0; -- 1.9.1