linux-kernel - Re: [PATCH 5/8] iio: core: Introduce IIO_CHAN_INFO

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Date:	Fri, 26 Dec 2014 13:29:54 +0000
From:	Jonathan Cameron <jic23@...nel.org>
To:	Irina Tirdea <irina.tirdea@...el.com>, linux-iio@...r.kernel.org
CC:	linux-kernel@...r.kernel.org, Vlad Dogaru <vlad.dogaru@...el.com>,
	Daniel Baluta <daniel.baluta@...el.com>,
	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>
Subject: Re: [PATCH 5/8] iio: core: Introduce IIO_CHAN_INFO_CALIBGENDER

On 19/12/14 22:57, Irina Tirdea wrote:
> Some devices need the gender of the user to compute various
> parameters. One of this devices is Freescale's MMA9553L
> (http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
> that needs the gender of the user to compute distance, speed and activity type.
> 
> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>

> ---
>  Documentation/ABI/testing/sysfs-bus-iio |    8 ++++++++
>  drivers/iio/industrialio-core.c         |    1 +
>  include/linux/iio/iio.h                 |    1 +
>  3 files changed, 10 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index e480175..3b68c2d 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -343,6 +343,14 @@ Description:
>  		production inaccuracies).  If shared across all channels,
>  		<type>_calibscale is used.
>  
> +What:		/sys/bus/iio/devices/iio:deviceX/in_steps_calibgender
> +KernelVersion:	3.19
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Gender of the user: 0 for female and 1 for male. It is needed
> +		by some pedometers to compute the stride length, distance,
> +		speed and activity type.
This will have to go through the extended attribute enum interface. No magic
numbers in the interface please.  
> +
>  What:		/sys/bus/iio/devices/iio:deviceX/in_steps_calibheight
>  KernelVersion:	3.19
>  Contact:	linux-iio@...r.kernel.org
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 4c435c8..93a39f9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -125,6 +125,7 @@ static const char * const iio_chan_info_postfix[] = {
>  	[IIO_CHAN_INFO_ENABLE] = "en",
>  	[IIO_CHAN_INFO_CALIBHEIGHT] = "calibheight",
>  	[IIO_CHAN_INFO_CALIBWEIGHT] = "calibweight",
> +	[IIO_CHAN_INFO_CALIBGENDER] = "calibgender",
>  };
>  
>  /**
> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> index 752a929..63dac0f 100644
> --- a/include/linux/iio/iio.h
> +++ b/include/linux/iio/iio.h
> @@ -41,6 +41,7 @@ enum iio_chan_info_enum {
>  	IIO_CHAN_INFO_ENABLE,
>  	IIO_CHAN_INFO_CALIBHEIGHT,
>  	IIO_CHAN_INFO_CALIBWEIGHT,
> +	IIO_CHAN_INFO_CALIBGENDER,
>  };
>  
>  enum iio_shared_by {
> 

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