From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ivan T. Ivanov" Subject: Re: [PATCH 0/4] usb: chipidea: msm: Clean and fix glue layer driver Date: Mon, 11 Nov 2013 16:49:41 +0200 Message-ID: <1384181381.23605.32.camel@iivanov-dev.int.mm-sol.com> References: <1384176937-1658-1-git-send-email-iivanov@mm-sol.com> <20131111140235.GC21746@shlinux1.ap.freescale.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from ns.mm-sol.com ([37.157.136.199]:59480 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754218Ab3KKOut (ORCPT ); Mon, 11 Nov 2013 09:50:49 -0500 In-Reply-To: <20131111140235.GC21746@shlinux1.ap.freescale.net> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: Peter Chen Cc: alexander.shishkin@linux.intel.com, gregkh@linuxfoundation.org, rob.herring@calxeda.com, pawel.moll@arm.com, mark.rutland@arm.com, swarren@wwwdotorg.org, ijc+devicetree@hellion.org.uk, davidb@codeaurora.org, linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Hi Peter, On Mon, 2013-11-11 at 22:02 +0800, Peter Chen wrote: > On Mon, Nov 11, 2013 at 03:35:33PM +0200, Ivan T. Ivanov wrote: > > From: "Ivan T. Ivanov" > > > > Hi, > > > > This series intend to fixup driver, which was broken for a while. It is > > used to create peripheral role device, which in coordination with > > phy-usb-msm driver (still some cleanups pending) will provide again > > USB2.0 gadget support for MSM targets. > > > > We haven't seen msm chipidea patch for a long time, good news they appear. > Any plans to use the whole chipidea function for msm controller driver > (otg, host and peripheral)? > Things are little complicated here :-). Currently qcom,echi-host is supposed to control host role. Not tested this completely, but this how is handled also by down stream kernel (codeaurora.org). In this repo there are even 2 slightly different versions of the driver. And OTG and PHY control situations is even ... Currently this functionality is handled by phy-msm-usb. There is a separate gadget driver downstream, which seems to be used in production targets. My plan is to first port minimal set of changes form downstream kernel to phy-msm-usb, which will bring up peripheral role. Regards, Ivan