> -----Original Message----- > From: [email protected] [mailto:linux-usb- > [email protected]] On Behalf Of Baolin Wang > Sent: Monday, March 28, 2016 2:52 PM > To: Peter Chen <[email protected]> > Cc: Felipe Balbi <[email protected]>; Greg KH <[email protected]>; > Sebastian Reichel <[email protected]>; Dmitry Eremin-Solenikov > <[email protected]>; David Woodhouse <[email protected]>; Peter Chen > <[email protected]>; Alan Stern <[email protected]>; > [email protected]; Yoshihiro Shimoda > <[email protected]>; Lee Jones <[email protected]>; Mark > Brown <[email protected]>; Charles Keepax > <[email protected]>; [email protected]; > Linux PM list <[email protected]>; USB <[email protected]>; > [email protected]; LKML <linux- > [email protected]> > 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 <[email protected]> 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 [email protected] More majordomo info at > http://vger.kernel.org/majordomo-info.html
