linux-kernel - [PATCH 0/1] toshiba_acpi: Add support for bluetooth toggling through rfkill

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Date:	Sun, 27 Jul 2008 11:17:04 -0700
From:	Philip Langdale <philipl@...rt.org>
To:	LKML <linux-kernel@...r.kernel.org>
CC:	Matthew Garrett <mjg59@...f.ucam.org>, toshiba_acpi@...ebeam.org,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	Ivo van Doorn <ivdoorn@...il.com>,
	linux-wireless@...r.kernel.org
Subject: [PATCH 0/1] toshiba_acpi: Add support for bluetooth toggling through
 rfkill

As requested by Henrique, I have reworked this patch against wireless-testing
and it uses the new-style rfkill API and to report the input device as a switch.

I did some digging to try and find a usable gpe event but had only limited
success. From another look through the AML, it uses GPE08 for almost everything
- inspecting a bunch of state for each event and then sending notifications on
different objects. I couldn't find one for the hardware kill switch itself but I
did manage to find one that's emitted when the bluetooth device enters the
equivalent of the SOFT_BLOCKED state. This is useful for noticing that the
hardware switch has been released, but it also fires on transitions from UNBLOCKED
to SOFT_BLOCKED - so I had to try and avoid turning around and unblocking the
device! I'm not particularly happy with how I did it (ignore-the-next-event)
but I can't think of a better way.

--phil
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