From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Ross <andy.ross@windriver.com>
Subject: Re: [PATCH 1/2] input: Pegatron Lucid accelerometer
Date: Tue, 18 Jan 2011 09:21:31 -0800
Message-ID: <4D35CC1B.3020808@windriver.com>
References: <1295287011-12849-1-git-send-email-andy.ross@windriver.com> <1295287011-12849-2-git-send-email-andy.ross@windriver.com> <4D3529A1.1030804@ti.com>
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To: Shubhrajyoti <shubhrajyoti@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>, Corentin Chary <corentincj@iksaif.net>, linux-input@vger.kernel.org, acpi4asus-user@lists.sourceforge.net, platform-driver-x86@vger.kernel.org
List-Id: platform-driver-x86.vger.kernel.org

On 01/17/2011 09:48 PM, Shubhrajyoti wrote:
> Could you explain why a polling is needed. Is no irq line connected.

It's just an ACPI method interface, so no dedicated IRQ certainly.
The firmware does issue ACPI events on coarse orientation changes
(i.e. which edge is up) that we're catching with acpid, so there's no
reason this needs to poll all the time in typical usage.

Andy