linux-kernel - Re: [PATCH V2 2/2] staging: Documentation: add proximity_sampling

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Date:	Thu, 12 Apr 2012 10:37:47 +0100
From:	Jonathan Cameron <jic23@....ac.uk>
To:	Laxman Dewangan <ldewangan@...dia.com>
CC:	gregkh@...uxfoundation.org, grant.likely@...retlab.ca,
	rob.herring@...xeda.com, jbrenner@...sinc.com, rklein@...dia.com,
	max@...o.at, linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH V2 2/2] staging: Documentation: add proximity_sampling_period
 as sysfs details

On 4/12/2012 8:08 AM, Laxman Dewangan wrote:
> Add the sysfs proximity_sampling_period for sampling period of
> proximity sensing.
>
> Signed-off-by: Laxman Dewangan<ldewangan@...dia.com>
> ---
>   .../staging/iio/Documentation/sysfs-bus-iio-light  |    7 +++++++
>   1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-light b/drivers/staging/iio/Documentation/sysfs-bus-iio-light
> index edbf470..9d6108b 100644
> --- a/drivers/staging/iio/Documentation/sysfs-bus-iio-light
> +++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-light
> @@ -83,3 +83,10 @@ Description:
>   		Hardware or software applied calibration scale factor assumed
>   		to account for attenuation due to industrial design (glass
>   		filters or aperture holes).
> +
> +What:		/sys/bus/iio/devices/device[n]/proximity_sampling_period
> +KernelVersion:	3.5
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Hardware dependent mode for proximity sensor device to set/get
> +		the sampling rate of proximity sensing and conversion.
Ah, that explains what it is.  Sorry, use 
in_proximitiy0_sampling_frequency to provide equivalent
control please.  Might be a pain here, but this interface will just 
provide the same info as the existing
one in a different form.  Note that sampling_frequency is documented as 
a general one, but can
be extended to individual channels.

Actually add it to the iio-core as an element in the info_mask as I 
doubt this will be the last time
we see this control. This will need to be a precursor patch to the 
driver obviously.

IIO_CHAN_INFO_SAMP_FREQ and the relevant shared and separate macros need 
to go in
iio.h + the text entry in industrialio-core.c

If you like I can do this but it'll be quicker if you do :)
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