Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754959AbbHNLFA (ORCPT ); Fri, 14 Aug 2015 07:05:00 -0400 Received: from mail-yk0-f173.google.com ([209.85.160.173]:36111 "EHLO mail-yk0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754844AbbHNLE5 (ORCPT ); Fri, 14 Aug 2015 07:04:57 -0400 MIME-Version: 1.0 In-Reply-To: <20150814085527.GA17920@shlinux2> References: <20150814085527.GA17920@shlinux2> Date: Fri, 14 Aug 2015 19:04:56 +0800 Message-ID: Subject: Re: [PATCH v2 0/3] Introduce usb charger framework to deal with the usb gadget power negotation From: Baolin Wang To: Li Jun Cc: Felipe Balbi , Mark Brown , Linus Walleij , LKML , Greg KH , Peter Chen , sojka@merica.cz, Alan Stern , r.baldyga@samsung.com, yoshihiro.shimoda.uh@renesas.com, linux-usb@vger.kernel.org, device-mainlining@lists.linuxfoundation.org, sre@kernel.org, dbaryshkov@gmail.com, dwmw2@infradead.org, sameo@linux.intel.com, lee.jones@linaro.org, patches@opensource.wolfsonmicro.com, linux-pm@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1181 Lines: 37 On 14 August 2015 at 16:55, Li Jun wrote: > Hi Baolin, > > On Fri, Aug 14, 2015 at 05:47:43PM +0800, Baolin Wang wrote: >> Currently the Linux kernel does not provide any standard integration of this >> feature that integrates the USB subsystem with the system power regulation >> provided by PMICs meaning that either vendors must add this in their kernels >> or USB gadget devices based on Linux (such as mobile phones) may not behave >> as they should. >> >> Providing a standard framework for doing this in the kernel. >> > > Why not add power supply class support into this? > Hi Jun, We don't need the power supply class support into the usb charger, just introduce the notify mechanism for power to set the current limit when notifying some events from usb charger. Maybe I misunderstand your meanings, please describe it detailedly. Thanks for your comments. > Li Jun > -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/