linux-kernel - Re: UNS: Re: [PATCH] musb: move usb_add_hcd to the core init code from gadget code (v2)

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Message-ID: <4D2B12D1.5060807@heeltoe.com>
Date:	Mon, 10 Jan 2011 09:08:17 -0500
From:	Brad Parker <brad@...ltoe.com>
To:	balbi@...com
CC:	bryan.wu@...onical.com, felipe.balbi@...ia.com,
	linux-usb@...r.kernel.org, david-b@...bell.net,
	kernel-team@...ts.ubuntu.com, linux-kernel@...r.kernel.org,
	ricardo.salveti@...onical.com, linux-omap@...r.kernel.org
Subject: Re: UNS: Re: [PATCH] musb: move usb_add_hcd to the core init code
 from gadget code (v2)

Felipe Balbi wrote:
> Hi,
>
> On Mon, Jan 10, 2011 at 06:47:58AM -0500, Brad Parker wrote:
>   
>> ...
>> (my expectation is that the mode should toggle from "b_idle" to "a_host"
>> when I plug in an a connector with the id pin tied correctly, and
>> back to "b_idle"
>> when I disconnect)
>>     
> What's the problem in simply insmoding a gadget driver ? If you have OTG
> enabled, you _need_ a gadget driver to have a fully working setup. If
> you want host only, then change Kconfig
I guess there are multiple "modalities".

- some users don't use a gadget driver and expect host mode to work 
(they fail)
- some users use a gadget driver and host mode (apparently that works)
- some users use a gadget driver only (they work)

I'd  like to avoid having multiple kernels.  (and to be honest, I'm not 
convinced
just convince I can get the right behaviors by changing the .config; I 
assume
you mean .config and not Kconfig...  I don't think it works but I'll try 
it out)

-brad

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