Re: [PATCH][resend] rc: gpio-ir-recv: allow flush space on idle

[Sean Young <sean-hENCXIMQXOg@public.gmane.org>]

On Fri, Sep 11, 2015 at 07:00:24AM -0700, Eric Nelson wrote:
> Many decoders require a trailing space (period without IR illumination)
> to be delivered before completing a decode.
> 
> Since the gpio-ir-recv driver only delivers events on gpio transitions,
> a single IR symbol (caused by a quick touch on an IR remote) will not
> be properly decoded without the use of a timer to flush the tail end
> state of the IR receiver.

This is a problem other IR drivers suffer from too. It might be better
to send a IR timeout event like st_rc_send_lirc_timeout() in st_rc.c,
with the duration set to what the timeout was. That is what irraw 
timeouts are for; much better than fake transitions.

> This patch adds an optional device tree node "flush-ms" which, if
> present, will use a jiffie-based timer to complete the last pulse
> stream and allow decode.

A common value for this is 100ms, I'm not sure what use it has to have
it configurable. It's nice to have it exposed in rc_dev->timeout.


Sean
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