netdev - Re: [PATCH net-next 3/3] ice: add write functionality for GNSS TTY

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Date:   Thu, 23 Jun 2022 09:07:39 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Kolacinski, Karol" <karol.kolacinski@...el.com>
Cc:     "davem@...emloft.net" <davem@...emloft.net>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "richardcochran@...il.com" <richardcochran@...il.com>,
        "G, GurucharanX" <gurucharanx.g@...el.com>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>
Subject: Re: [PATCH net-next 3/3] ice: add write functionality for GNSS TTY

On Thu, 23 Jun 2022 13:39:35 +0000 Kolacinski, Karol wrote:
> On Mon, 23 May 2022 19:58 +0000 Jakub Kicinski wrote:
> > I meant discovered at the uAPI level. Imagine I plug in a shiny E810T
> > with a GNSS receiver into a box, the PRSNT_N bit is set and the driver
> > registered the ttys. How do I find the GNSS under /dev ?  
> 
> If the module is physically present, driver creates 2 TTYs for each supported
> device in /dev, ttyGNSS_<device>:<function>_0 and _1. First one (_0) is RW and
> the second one is RO.
> The protocol of write commands is dependent on the GNSS module as the driver
> writes raw bytes from the TTY to the GNSS i2c.
> 
> I added this to Documentation/.

Sounds good, thanks!