Date: Fri, 26 Mar 2004 15:23:28 -0800
To: David Brownell <david-b@pacbell.net>
Cc: David Woodhouse <dwmw2@infradead.org>,
       Robert Schwebel <robert@schwebel.de>,
       linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [linux-usb-devel] Re: [ANNOUNCE] RNDIS Gadget Driver
Message-ID: <20040326232328.GA29771@reid.corvallis.or.us>
Mail-Followup-To: David Brownell <david-b@pacbell.net>,
	David Woodhouse <dwmw2@infradead.org>,
	Robert Schwebel <robert@schwebel.de>,
	linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
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On Fri, Mar 26, 2004 at 07:44:10AM -0800, David Brownell wrote:
> There's a file system protocol used by many digital still cameras,
> which isn't actually camera-specific.  Not MSFT-specific either.
> 
> Originally called "Picture Transfer Protocol" (PTP) it's actually
> more of a remote hierarchical filesystem protocol ... with an event
> channel (handy for "new picture" or "inserted new flash memory")
> and some built-in search capabilities ("what JPGs do you have").
> The strangest capability was a file type tag, which isn't actually
> that bizarre.
> 
> As with RNDIS, and USB Mass Storage, I understand that support for
> PTP is part of MS-Windows since about Win2K.  So a PTP gadget
> driver would probably be a useful contribution to Linux.

A host driver "USB PTP Storage" would be really nice too.  First
as a generic camera interface, second to access a gadget with the
PTP interface.

(Please embarrass me by saying there already is one, I'll be so happy
I won't care :-) ).

I have a PTP camera and would certainly be happy to test such a driver.
Time to write it is a different matter.

Don Reid
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