linux-kernel - Re: [PATCH] usb: typec: altmodes/displayport: Update active state

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Message-ID: <Y8pdha65Co0DCihr@kuha.fi.intel.com>
Date:   Fri, 20 Jan 2023 11:23:17 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        bleung@...omium.org, stable@...r.kernel.org
Subject: Re: [PATCH] usb: typec: altmodes/displayport: Update active state

On Fri, Jan 20, 2023 at 11:16:43AM +0200, Heikki Krogerus wrote:
> It's not be possible to enter a mode with tcpm.c unless there is
> a driver for the altmode currently. Something has to take care of the
> altmode, and if that something is not the altmode driver it would need
> to be the user space. Right now we don't have an interface for that.
> 
> In any case, if there's no driver for the altmode, then the partner
> altmode "active" file should not be visible.

I meant read-only :-).

thanks,

-- 
heikki