Re: [PATCH v8] usb:serial:pl2303: add GPIOs interface on PL2303

[Johan Hovold <johan@kernel.org>]

On Tue, Sep 09, 2014 at 06:21:31PM +0800, Wang YanQing wrote:
> On Tue, Sep 09, 2014 at 12:08:56PM +0200, Johan Hovold wrote:
> > On Fri, Sep 05, 2014 at 09:30:11AM +0800, Wang YanQing wrote:
> > > On Thu, Sep 04, 2014 at 06:44:31PM +0200, Benjamin Henrion wrote:
> > > > On Thu, Sep 4, 2014 at 6:14 PM, Benjamin Henrion <zoobab@gmail.com> wrote:
> > > > > I have subscribed to the lkml.
> > > > >
> > > > > Can you make me a favour, send me your email as you posted on the LKML
> > > > > in mbox format attached to an email?
> > > > >
> > > > > I am trying to reply to it, but I cannot find an mbox archive, outside
> > > > > of gmane which rewrites all the email addresses.
> > > > >
> > > > > Otherwise, I made a page here:
> > > > >
> > > > > http://www.zoobab.com/pl2303hxd-gpio
> > > > >
> > > > > I will also try with other adapters to see if the 2 GPIOs show up.
> > > > >
> > > > > Any idea how to test the GPIO sysfs speed?
> > > > 
> > > > Also tested with an HXA laying around, I could export the 2 GPIOS in
> > > > /sys/class/gpio, but I could not change the status of the pins via
> > > > echo.
> > > > 
> > > > Any idea why?
> > > 
> > > It is strange, I have tested again with my two HXA adapters, they work well.
> > > How do you test? check cat value or check voltage change? I check cat value,
> > > and they work good.
> > 
> > So you haven't verified that the voltage actually changes?
> > 
> > Johan
> 
> I have verified the voltage actually changes in previous patch version,
> but I haven't verified that with v8.

Ok, good. I'll get back to you with some comments on v8 shortly.

Thanks,
Johan