linux-kernel - Re: [RFC] Should we create a raw input interface for IR's ? - Was: Re: [PATCH 1/3 v2] lirc core device driver infrastructure

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Date:	26 Nov 2009 23:05:00 +0100
From:	lirc@...telmus.de (Christoph Bartelmus)
To:	mchehab@...hat.com
Cc:	superm1@...ntu.com
Subject: Re: [RFC] Should we create a raw input interface for IR's ? - Was: Re: [PATCH 1/3 v2] lirc core device driver infrastructure

Hi Mauro,

on 26 Nov 09 at 18:59, Mauro Carvalho Chehab wrote:
> Christoph Bartelmus wrote:
[...]
>>> lircd supports input layer interface. Yet, patch 3/3 exports both devices
>>> that support only pulse/space raw mode and devices that generate scan
>>> codes via the raw mode interface. It does it by generating artificial
>>> pulse codes.
>>
>> Nonsense! There's no generation of artificial pulse codes in the drivers.
>> The LIRC interface includes ways to pass decoded IR codes of arbitrary
>> length to userspace.

> I might have got wrong then a comment in the middle of the
> imon_incoming_packet() of the SoundGraph iMON IR patch:

Indeed, you got it wrong.
As I already explained before, this device samples the signal at a  
constant rate and delivers the current level in a bit-array. This data is  
then condensed to pulse/space data.

Christoph
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