linux-kernel - Re: N900 modem support in 3.18-rc1

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Message-ID: <20141114220529.GA18566@earth.universe>
Date:	Fri, 14 Nov 2014 23:05:29 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	Pavel Machek <pavel@....cz>,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
	aaro.koskinen@....fi, freemangordon@....bg,
	Sakari Ailus <sakari.ailus@....fi>
Subject: Re: N900 modem support in 3.18-rc1

Hi,

On Fri, Nov 14, 2014 at 06:34:18PM +0100, Pali Rohár wrote:
> Anyway what is /dev/cmt_speech doing? If it exports gsm voice 
> call data, [...]

Right.

> [...] should not it have alsa snd interface?

Sounds also like a promising standardized kernel interface.
I wonder why a custom interface has been chosen in the first
place.

> V4L2 interface is not for video/camera/capture/tv cards?

The V4L2 interface is also used for radio interfaces (e.g. the
N900's fm receiver/transmitter) and for software defined radio.

-- Sebastian

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