linux-kernel - Re: Correct location for ADC/DAC drivers

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Date:	Fri, 4 May 2007 22:52:13 +0200
From:	Robert Schwebel <r.schwebel@...gutronix.de>
To:	Robin Getz <rgetz@...ckfin.uclinux.org>
Cc:	Stefan Roese <ml@...fan-roese.de>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: Correct location for ADC/DAC drivers

Robin,

On Fri, May 04, 2007 at 02:21:50PM -0400, Robin Getz wrote:
> We also have DAC and ADC drivers (up to 16 bits @ 64MS/s, via DMA),
> that would be nice to put in the "right" place  - I don't think that
> drivers/char is the right place, nor drivers/misc - I also don't think
> that /adc is a descriptive place for DAC or mixed signal front ends
> (MxFE).

What userspace interface do your drivers have? I don't think that there
is anything generic available at the moment, other than COMEDI (which is
rather outdated as far as I know).
 
> What about /drivers/char/daq or just drivers/daq - drivers for
> non-PCI/USB/ISA/PCMCIA Data Acquisition Hardware, D/A and A/D
> converters, Analog Front ends, etc.

I'd like drivers/daq better, because it doesn't have anything to do with
the bus it is connected to; a chipselect bus connectable ADC may be
connected to a SoC CS-bus or to a PCI bridge and you want to use the
same driver for it.

Robert
-- 
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