linux-kernel - Re: [PATCH 38/38] iio: magn-core: st: Provide support for the LSM303DLH

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Message-ID: <20130916112614.GC16984@lee--X1>
Date:	Mon, 16 Sep 2013 12:26:14 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Denis CIOCCA <denis.ciocca@...com>
Cc:	Jonathan Cameron <jic23@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jic23@....ac.uk" <jic23@....ac.uk>,
	"arnd@...db.de" <arnd@...db.de>,
	"linus.walleij@...aro.org" <linus.walleij@...aro.org>,
	"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH 38/38] iio: magn-core: st: Provide support for the
 LSM303DLH

On Mon, 16 Sep 2013, Denis CIOCCA wrote:

> Hi Lee,
> 
> > The driver mentions that the first group of sensors have a WAI of 
> > 0x3c: #define ST_MAGN_1_WAI_EXP 0x3c And when I print out the WAI read 
> > from the device: Requested device: lsm303dlh_magn - read WAI: 0x3c I 
> > guess I could have been lied to again by the board's datasheet again 
> > and the attached device isn't actually a LSM303DLH, but how can I tell 
> > for sure? 
> On LSM303DLH you have to read 0x0a 0x0b and 0x0c registers, you have to 
> find 0x48, 0x34 and 0x33. I think in the snowball there is the LSM303DLHC.

I just did that too:

  Device: lsm303dlh_magn: WAI: (0x3c)
  st_magn_common_probe():  IR: ID1 (0x48) ID2 (0x34) ID3 (0x33)

It appears the LSM303DLH does have a populated WAI register after all.

Now what? :)

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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