> -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of Baolin Wang > Sent: Monday, March 28, 2016 2:52 PM > To: Peter Chen <hzpeterchen@xxxxxxxxx> > Cc: Felipe Balbi <balbi@xxxxxxxxxx>; Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>; > Sebastian Reichel <sre@xxxxxxxxxx>; Dmitry Eremin-Solenikov > <dbaryshkov@xxxxxxxxx>; David Woodhouse <dwmw2@xxxxxxxxxxxxx>; Peter Chen > <peter.chen@xxxxxxxxxxxxx>; Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>; > r.baldyga@xxxxxxxxxxx; Yoshihiro Shimoda > <yoshihiro.shimoda.uh@xxxxxxxxxxx>; Lee Jones <lee.jones@xxxxxxxxxx>; Mark > Brown <broonie@xxxxxxxxxx>; Charles Keepax > <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>; patches@xxxxxxxxxxxxxxxxxxxxxxxxxxx; > Linux PM list <linux-pm@xxxxxxxxxxxxxxx>; USB <linux-usb@xxxxxxxxxxxxxxx>; > device-mainlining@xxxxxxxxxxxxxxxxxxxxxxxxx; LKML <linux- > kernel@xxxxxxxxxxxxxxx> > Subject: Re: [PATCH v8 0/4] Introduce usb charger framework to deal with > the usb gadget power negotation > > On 25 March 2016 at 15:09, Peter Chen <hzpeterchen@xxxxxxxxx> wrote: > > On Thu, Mar 24, 2016 at 08:35:53PM +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. Thus provide a > standard framework for doing this in kernel. > >> > >> Now introduce one user with wm831x_power to support and test the usb > >> charger, which is pending testing. Moreover there may be other > >> potential users will use it in future. > >> > > > > I am afraid I still not find the user (udc driver) for this framework, > > I would like to see how udc driver block the enumeration until the > > charger detection has finished, or am I missing something? > > It is not for udc driver but for power users who want to negotiate with > USB subsystem. > Seems you don't want to guarantee charger type detection is done before gadget connection(pullup DP), right? I see you call usb_charger_detect_type() in each gadget usb state changes. Li Jun > > > > -- > > Best Regards, > > Peter Chen > > > > -- > Baolin.wang > Best Regards > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at > http://vger.kernel.org/majordomo-info.html ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
