linux-kernel - Re: [PATCH] lis3lv02d: add axes knowledge of HP Pavilion dv5 models

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Date:	Wed, 11 Feb 2009 00:22:12 +0100
From:	Éric Piel <Eric.Piel@...mplin-utc.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Giuseppe Bilotta <giuseppe.bilotta@...il.com>, pavel@...e.cz,
	linux-kernel@...r.kernel.org, palatis@...il.com
Subject: Re: [PATCH] lis3lv02d: add axes knowledge of HP Pavilion dv5 models

Andrew Morton schreef:
> On Tue, 10 Feb 2009 23:48:14 +0100
> Giuseppe Bilotta <giuseppe.bilotta@...il.com> wrote:
> 
>> On Tue, Feb 10, 2009 at 10:39 PM, Giuseppe Bilotta
>> <giuseppe.bilotta@...il.com> wrote:
>>> On Tue, Feb 10, 2009 at 11:10 AM, Pavel Machek <pavel@...e.cz> wrote:
>>>> Yeah, that patch. Not sure what to do next... you could grab lis3
>>>> manual and see if you can setup chip by hand to get better results...
>>> As Eric pointed out, it looks definitely like an endianness problem,
>>> although there are a few strange things which are happening at the
>>> same time. Is the lis3 manual available online somewhere, or can I
>>> request it to the mfgr?
>> 'k, found it on the STMicroelectronics website. Reading the doc about
>> LIS3LV02DL I see that WHO_AM_I should return 3Ah, but my sensor
>> returns 3Bh. I'll see if I find the correct datasheet for this one
>> instead, it might have info about the differences.
>>
>> One thing that I noticed is that (modulo axis inversion) I'm able to
>> use the sensor correctly if I set the thing to only use the high byte,
>> totally discarding the lower byte:
>> 	return *((s8*)(&hi));
>> Maybe this sensor needs a different setup to return 12 instead of 8
>> bits of information.
>>
> 
> I've lost the plot here.  I still intend to merge
> lis3lv02d-add-axes-knowledge-of-hp-pavilion-dv5-models.patch into
> 2.6.29.  Someone please stop me if that is wrong.
Hi Andrew,
No, let's wait to get things settle down. You can discard the current 
patch. I think we should manage to get it working eventually, but the 
patch will be much bigger...

Eric
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