linux-kernel - Re: [PATCH v2 1/3] USB: Add driver for NXP ISP1301 USB transceiver

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Date:	Mon, 16 Apr 2012 12:02:56 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Roland Stigge <stigge@...com.de>
cc:	gregkh@...uxfoundation.org, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <kevin.wells@....com>,
	<srinivas.bakki@....com>, <arnd@...db.de>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 1/3] USB: Add driver for NXP ISP1301 USB transceiver

On Mon, 16 Apr 2012, Roland Stigge wrote:

> On 04/16/2012 05:09 PM, Alan Stern wrote:
> >>  drivers/usb/Makefile        |    5 ++
> >>  drivers/usb/misc/Kconfig    |   12 ++++++
> >>  drivers/usb/misc/Makefile   |    1 
> >>  drivers/usb/misc/isp1301.c  |   64 ++++++++++++++++++++++++++++++++++
> >>  include/linux/usb/isp1301.h |   82 ++++++++++++++++++++++++++++++++++++++++++++
> > 
> > You know, drivers/usb/misc is meant for miscellaneous USB device 
> > drivers.  Not for host or transceiver drivers.
> > 
> > You should put the new file somewhere else.  Maybe in the otg 
> > directory, although that may not be completely appropriate either.  
> > Maybe something under the host directory.
> 
> The driver is used by drivers in the following directories:
> 
> drivers/usb/host/    (ohci-nxp.c)
> drivers/usb/otg/     (isp1301_omap.c)
> drivers/usb/gadget/  (lpc32xx_udc.c)
> 
> So host/ and otg/ don't look much better.
> 
> Maybe one of (new):
> 
>     drivers/usb/transceiver/
>     drivers/usb/phy/
>     drivers/usb/lowlevel/
> 
> ?
> 
> Otherwise, I will put it in drivers/usb/otg/ even of it doesn't look
> better to me but the chip is advertised as "OTG transceiver". ;-)

I don't know.  Maybe Greg KH or Felipe Balbi will have a
recommendation.  But any of these alternatives would be better than
drivers/usb/misc/.

Alan Stern

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