From: Felipe Balbi <balbi@kernel.org>
To: Shantur Rathore <i@shantur.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: usb-gadget: dynamic reconfiguration
Date: Mon, 08 Nov 2021 15:07:26 +0200 [thread overview]
Message-ID: <87sfw6eqx8.fsf@kernel.org> (raw)
In-Reply-To: <CABEcMwWwsa1Q_mZaf=QUQb-Gc-xe=gmL6F2v3BPGyrJ7-mfB2g@mail.gmail.com>
Hi,
Shantur Rathore <i@shantur.com> writes:
> Hi all,
>
> I am trying to figure out if it's possible to reconfigure a usb-gadget
> when it's live.
> The idea is to create a gadget with 1 function - lets say a serial gadget.
>
> Upon communication with the host, the host could specify (via Serial
> communication) which is the next gadget it needs for example a mass
> storage or ecm and the next gadget can be added to the configuration.
>
> For now this only works if the gadget is disconnected and reconnected
> to the UDC.
>
> I want to understand if it is technically possible to add more
> functions to a live config without affecting existing functions.
the only thing you can do is upon a certain command, logically
disconnect from the bus and connect again as a new device.
--
balbi
next prev parent reply other threads:[~2021-11-08 13:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-08 12:54 usb-gadget: dynamic reconfiguration Shantur Rathore
2021-11-08 13:02 ` Greg KH
2021-11-08 13:07 ` Felipe Balbi [this message]
2021-11-08 14:05 ` Shantur Rathore
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