linux-kernel - Re: [PATCH 3/5] usb: gadget: gmidi: remove bus powered requirement on bmAttributes

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Message-id: <56DEDE81.6000007@samsung.com>
Date:	Tue, 08 Mar 2016 15:15:29 +0100
From:	Krzysztof Opasiak <k.opasiak@...sung.com>
To:	Felipe Ferreri Tonello <eu@...ipetonello.com>,
	Felipe Balbi <balbi@...nel.org>, linux-usb@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Michal Nazarewicz <mina86@...a86.com>,
	Clemens Ladisch <clemens@...isch.de>
Subject: Re: [PATCH 3/5] usb: gadget: gmidi: remove bus powered requirement on
 bmAttributes



On 03/08/2016 02:54 PM, Felipe Ferreri Tonello wrote:
 (...)

>>
>>> sort of preset library of configfs-based gadget drivers, we still need
>>> these modules.
>>
>> there is already a library called libusbg.
> 
> By preset library I meant scripts or little programs that implement the
> legacy drivers we have.
> 

libusbgx implements an idea of gadget schemes[1]. That's simple
configuration files using libconfig syntax. I don't see any problems to
use it to create legacy gadget equivalents. Then you could simply load
it using usbg_import_gadget() in C code or gt[2] load from shell.

Footnotes:
1 - https://github.com/libusbgx/libusbgx/blob/master/doc/gadget_schemes.txt
2 - https://github.com/kopasiak/gt

Cheers,
-- 
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics