From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Interface between LTE devices and Linux
Date: Thu, 8 Feb 2018 18:18:28 +0100 [thread overview]
Message-ID: <20180208171828.GA11601@kroah.com> (raw)
In-Reply-To: <CAOhBGduK6iq+FQ527+JG9BHwziCjBzkeP-3MjivCuVAFE0P7XA@mail.gmail.com>
On Thu, Feb 08, 2018 at 06:10:59PM +0100, jjDaNiMoTh wrote:
> Hello everyone,
>
> There is an example of LTE netdevice in the Linux source tree?
>
> In particular, I would like to know if there is any device driver that
> implements the layers required by the 3GPP standard. I imagine that it
> should exist something since Android is communicating over LTE, but I can't
> find any reference.
That communication happens usually through a "dumb" serial-like
connection to the LTE modem. All of the modem commands are handled in
userspace, the kernel doesn't care about anything relating to this at
all (and it really shouldn't).
> What I fear more is that everything related to LTE is inside the
> closed device firmware, and data is sent from the TC layer into this
> black-box firmware through a sort of API. In this case, it would be
> wonderful to know where, exactly, this API is used, to try to
> understand what the firmware is doing.
Look at the Android AOSP images for the location for most of this logic,
there should be a Telephony HAL somewhere in there that handles the
heavy-lifting of all of this logic.
Good luck!
greg k-h
next prev parent reply other threads:[~2018-02-08 17:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-08 17:10 Interface between LTE devices and Linux jjDaNiMoTh
2018-02-08 17:18 ` Greg KH [this message]
2018-02-13 7:59 ` Nuno Sá
2018-02-13 13:21 ` Jeffrey Walton
2018-02-13 15:30 ` Bjørn Mork
2018-02-13 16:07 ` Jeffrey Walton
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