From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933139AbcCKAUt (ORCPT ); Thu, 10 Mar 2016 19:20:49 -0500 Received: from mga09.intel.com ([134.134.136.24]:42861 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932844AbcCKAUr (ORCPT ); Thu, 10 Mar 2016 19:20:47 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,318,1455004800"; d="scan'208";a="907521783" Subject: Re: [PATCH v3 0/7] usb: add support for Intel dual role port mux To: Greg Kroah-Hartman References: <1457423628-3183-1-git-send-email-baolu.lu@linux.intel.com> <20160311000328.GC2586@kroah.com> Cc: Felipe Balbi , Mathias Nyman , Lee Jones , Heikki Krogerus , MyungJoo Ham , Chanwoo Choi , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org From: Lu Baolu Message-ID: <56E20F5B.3050204@linux.intel.com> Date: Fri, 11 Mar 2016 08:20:43 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <20160311000328.GC2586@kroah.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/11/2016 08:03 AM, Greg Kroah-Hartman wrote: > On Tue, Mar 08, 2016 at 03:53:41PM +0800, Lu Baolu wrote: >> Intel SOC chips are featured with USB dual role. The host role is >> provided by Intel xHCI IP, and the gadget role is provided by IP >> from designware. Tablet platform designs always share a single >> port for both host and gadget controllers. There is a mux to >> switch the port to the right controller according to the cable >> type. OS needs to provide the callback to control the mux when >> a plug-in event raises. The method to control the mux is platform >> dependent. At least three types of implementation can be found >> across current devices. 1) GPIO pins; 2) a unit which can be >> controlled by memory mapped registers; 3) ACPI ASL code. >> >> This patch series adds supports for Intel dual role port mux. >> It includes: >> (1) A helper layer on top of extcon for individual mux driver. >> It listens to the USB-HOST extcon cable and call the switch >> call-back when the cable state changes. >> (2) Drivers for GPIO controlled port mux which could be found on >> Baytrail devices. A mfd driver is used to split the GPIOs into >> USB gpio extcon device and a USB mux device. Driver for USB >> gpio extcon device is already in upstream Linux. This patch >> series includes a driver for GPIO USB mux. >> (3) Drivers for USB port mux controlled through memory mapped >> registers and the logic to create the mux device. This type >> of dual role port mux could be found in Cherry Trail and >> Broxton devices. >> >> Lu Baolu (7): >> extcon: usb-gpio: add device binding for platform device >> extcon: usb-gpio: add support for ACPI gpio interface >> usb: mux: add common code for Intel dual role port mux >> usb: mux: add driver for Intel gpio controlled port mux >> usb: mux: add driver for Intel drcfg controlled port mux >> usb: pci-quirks: add Intel USB drcfg mux device >> mfd: intel_vuport: Add Intel virtual USB port MFD Driver > You don't describe here what you changed from v2, or even from v1. > Please always be specific, we don't remember what your last submissions > looked like at all... I am sorry. I put the change log after file change summary. I will move it up here next time. Best regards, Baolu > > thanks, > > greg k-h >