linux-kernel - [PATCH] Implementation of acpi_video_get_next

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Date:	Fri, 24 Nov 2006 14:33:47 -0500
From:	Thomas Tuttle <linux-kernel@...ttle.net>
To:	len.brown@...el.com
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	acpi-devel@...ts.sourceforge.net, linux-acpi@...el.com
Subject: [PATCH] Implementation of acpi_video_get_next_level

PATCH: Implementation of acpi_video_get_level

(patch file attached)

acpi_video_get_next_level was supposed to implement an algorithm to
select a new brightness level based on the old brightness level of an
ACPI video device, but it simply says "/* Fix me */" and returns the
current brightness.

This patch implements acpi_video_get_next_level properly.  It had to
change a few constants at the top of the file because they were
(apparently) wrong, but it appears to work on my Dell Inspiron e1405
(with BIOS A05 only--BIOS A04 doesn't seem to send ACPI video hotkey
events).

I'm sending this to Len Brown, the linux-kernel and linux-acpi lists at
kernel.org, the acpi-devel list at Sourceforge, and the linux-acpi alias
at Intel.  I'm not sure who should be the one to apply it, but it's a
small and simple enough patch that it shouldn't require a complicated
review.

Thanks for your time, and hope this helps,

Thomas Tuttle

View attachment "acpi_video_get_next_level.patch" of type "text/plain" (2105 bytes)

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