From: "Mariusz Białończyk" <manio@skyboo.net>
To: linux-media@vger.kernel.org
Subject: Re: [PATCH] V4L/DVB: cx88: Add module parameter to disable IR
Date: Thu, 18 Nov 2010 08:24:28 +0100 [thread overview]
Message-ID: <4CE4D4AC.5060201@skyboo.net> (raw)
In-Reply-To: <1290062581.41867.321546213719.1.gpush@pororo>
On 2010-11-18 07:43, Jeremy Kerr wrote:
> Currently, the cx88-input code unconditionally establishes an input
> device for IR events. On some cards, this sets up a hrtimer to poll the
> IR status frequently - I get around 200 wakeups per second from this
> polling, and don't use the IR ports.
>
> Although the hrtimer is only run when the input device is opened, the
> device is actually unconditionally opened by kbd_connect, because we
> have the EV_KEY bit set in the input device descriptor. In effect, the
> IR device is always opened (and so polling) if CONFIG_VT.
>
> This change adds a module parameter, 'ir_disable' to disable the IR
> code, and not register this input device at all. This drastically
> reduces the number of wakeups per second for me.
AFAIK we have disable support in cx88:
http://git.linuxtv.org/media_tree.git?a=commit;h=89c3bc78075042ae1f4452687f626acce06b3b21
isn't it related with your patch?
--
Mariusz Białończyk
jabber/e-mail: manio@skyboo.net
http://manio.skyboo.net
next prev parent reply other threads:[~2010-11-18 7:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-18 6:43 [PATCH] V4L/DVB: cx88: Add module parameter to disable IR Jeremy Kerr
2010-11-18 7:24 ` Mariusz Białończyk [this message]
[not found] ` <4CE4D3D5.5090108@skyboo.net>
2010-11-18 7:30 ` Jeremy Kerr
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