linux-kernel - Re: [PATCH v4 5/5] LIS3: Update documentation to match latest changes

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Date:	Wed, 2 Dec 2009 09:40:59 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Samu Onkalo <samu.p.onkalo@...ia.com>
Cc:	eric.piel@...mplin-utc.net, linux-kernel@...r.kernel.org,
	lm-sensors@...sensors.org
Subject: Re: [PATCH v4 5/5] LIS3: Update documentation to match latest
 changes

On Tue,  1 Dec 2009 10:33:42 +0200 Samu Onkalo wrote:

> Signed-off-by: Samu Onkalo <samu.p.onkalo@...ia.com>
> Acked-by: Éric Piel <eric.piel@...mplin-utc.net>
> ---
>  Documentation/hwmon/lis3lv02d |   31 ++++++++++++++++++++++++-------
>  1 files changed, 24 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/hwmon/lis3lv02d
> index 21f0902..cd354e3 100644
> --- a/Documentation/hwmon/lis3lv02d
> +++ b/Documentation/hwmon/lis3lv02d
> @@ -20,18 +20,35 @@ sporting the feature officially called "HP Mobile Data Protection System 3D" or
>  
>  This driver also provides an absolute input class device, allowing
> -the laptop to act as a pinball machine-esque joystick.
> +the laptop to act as a pinball machine-esque joystick. Joystick device can be
> +calibrated. Joystick device can be in two different modes.
> +By default output values are scaled between -32768 .. 32767. In joystick raw
> +mode, joystick and sysfs position entry have the same scale. There can be
> +small difference due to input system fuzziness feature.
> +Events are also available as input event device.
> +
> +Selftest is meant only for hardware diagnostic purposes. It is not meant to be
> +used during normal operations. Position data is not corrupted during selftest
> +but interrupt behaviour is not quaranteed to work reliably. In test mode, the

                                  guaranteed

Otherwise looks good.  Thanks.

> +sensing element is internally moved little bit. Selftest measures difference
> +between normal mode and test mode. Chip specifications tell the acceptance
> +limit for each type of the chip. Limits are provided via platform data
> +to allow adjustment of the limits without a change to the actual driver.
> +Seltest returns either "OK x y z" or "FAIL x y z" where x, y and z are
> +measured difference between modes. Axes are not remapped in selftest mode.
> +Measurement values are provided to help HW diagnostic applications to make
> +final decision.
>  
>  On HP laptops, if the led infrastructure is activated, support for a led
>  indicating disk protection will be provided as /sys/class/leds/hp::hddprotect.


---
~Randy
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