linux-kernel - RE: [PATCH v19 0/4] Introduce usb charger framework to deal with the usb gadget power negotation

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Date:   Tue, 14 Mar 2017 01:10:38 +0000
From:   Jun Li <jun.li@....com>
To:     Baolin Wang <baolin.wang@...aro.org>
CC:     NeilBrown <neilb@...e.com>, Felipe Balbi <balbi@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Sebastian Reichel <sre@...nel.org>,
        "Dmitry Eremin-Solenikov" <dbaryshkov@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        "robh@...nel.org" <robh@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Ruslan Bilovol <ruslan.bilovol@...il.com>,
        "Peter Chen" <peter.chen@...escale.com>,
        Alan Stern <stern@...land.harvard.edu>,
        "grygorii.strashko@...com" <grygorii.strashko@...com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Lee Jones <lee.jones@...aro.org>,
        "Mark Brown" <broonie@...nel.org>,
        John Stultz <john.stultz@...aro.org>,
        "Charles Keepax" <ckeepax@...nsource.wolfsonmicro.com>,
        "patches@...nsource.wolfsonmicro.com" 
        <patches@...nsource.wolfsonmicro.com>,
        Linux PM list <linux-pm@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        "device-mainlining@...ts.linuxfoundation.org" 
        <device-mainlining@...ts.linuxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v19 0/4] Introduce usb charger framework to deal with the
 usb gadget power negotation

Hi,

> -----Original Message-----
> From: Baolin Wang [mailto:baolin.wang@...aro.org]
> Sent: Monday, March 13, 2017 4:44 PM
> To: Jun Li <jun.li@....com>
> Cc: NeilBrown <neilb@...e.com>; Felipe Balbi <balbi@...nel.org>; Greg KH
> <gregkh@...uxfoundation.org>; Sebastian Reichel <sre@...nel.org>; Dmitry
> Eremin-Solenikov <dbaryshkov@...il.com>; David Woodhouse
> <dwmw2@...radead.org>; robh@...nel.org; Marek Szyprowski
> <m.szyprowski@...sung.com>; Ruslan Bilovol <ruslan.bilovol@...il.com>;
> Peter Chen <peter.chen@...escale.com>; Alan Stern
> <stern@...land.harvard.edu>; grygorii.strashko@...com; Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@...esas.com>; Lee Jones <lee.jones@...aro.org>;
> Mark Brown <broonie@...nel.org>; John Stultz <john.stultz@...aro.org>;
> Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>;
> patches@...nsource.wolfsonmicro.com; Linux PM list <linux-
> pm@...r.kernel.org>; USB <linux-usb@...r.kernel.org>; device-
> mainlining@...ts.linuxfoundation.org; LKML <linux-kernel@...r.kernel.org>
> Subject: Re: [PATCH v19 0/4] Introduce usb charger framework to deal with
> the usb gadget power negotation
> 
... ...
> >> That is same what USB charger did, from this point, we need USB
> >> charger to send out vbus draw information according to speed and usb
> >> state. But I should listen to other guys suggestion. Peter and Felipe, what
> do you think?

Instead of waiting for maintainer's comments on this long discussion, I'd suggest
you directly post the patches for the required change, so they can easily know
what's the conclusion/solution looks like.

Li Jun

> >
> > So now the only to do work is to find a common place to send the
> > notification out (based on gadget speed and sate).
> 
> Yes.
> 
> --
> Baolin.wang
> Best Regards