linux-kernel - axes conversion for hp compaq 8710w for HP

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Date:	Sun, 22 Mar 2009 00:08:19 +0100
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>,
	eric.piel@...mplin-utc.net
Subject: axes conversion for hp compaq 8710w for HP_ACCEL linux kernel
	module (fwd)

Hi!

It seems like Luca has one  more whitelist entry...
								Pavel


Subject: axes conversion for hp compaq 8710w for HP_ACCEL linux kernel module
From: Luca Cappa <lcappa@...il.com>


Hello,

I have a laptop HP Compaq 8710W, I compiled into my kernel the
LIS3LV02DL and HP_ACCEL module drivers. While loading it cannot
recognize the laptop
model, so i am sending the necessary information to update the
database of Axes Orientations.

>When the laptop is horizontal the position reported is about 0 for X and Y
>and a positive value for Z
Yes, it is about 0,0,1000, the actual reading says: (-17,-26,1018);

> If the left side is elevated, X increases (becomes positive)
Yes, X goes toward to positive 1000.

>If the front side (where the touchpad is) is elevated, Y decreases (becomes negative)
No, Y goes toward to positive 1000.

>If the laptop is put upside-down, Z becomes negative
Yes, the laptop on a table Z gives 1000, and if upsidedown the Z reads
-1000.

So in few words the Y axis is inverted,  I paste here below the very
simple patch to configure properly the axis conversion. The patch is
against the file hp_accel.c of 2.6.29-rc8, i.e. the one shown here:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/hwmon/hp_accel.c;h=29c83b5b96974bb88cbeb67d896ba46ee71469f2;hb=HEAD

Greetings,
Luca


--- /home/luca/Desktop/hp_accel.c	2009-03-21 19:28:54.000000000 +0100
+++ hp_accel.c	2009-03-21 19:31:05.000000000 +010
@@ -201,6 +201,7 @@
 			PRODUCT_NAME, "HP Pavilion dv5",
 			BOARD_NAME, "3600",
 			y_inverted),
+    AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
 	{ NULL, }
 /* Laptop models witho

----- End forwarded message -----

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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