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Date:   Sun, 9 Aug 2020 12:30:00 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Christian Eggers <ceggers@...i.de>
Cc:     Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        "Peter Meerwald-Stadler" <pmeerw@...erw.net>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] iio: documentation: light: Add as73211 sysfs
 documentation

On Sun, 9 Aug 2020 09:43:35 +0200
Christian Eggers <ceggers@...i.de> wrote:

> The driver for the as73211 light sensor provides the following not yet
> documented sysfs entries:
> - in_intensity_(x|y|z)_raw
> - in_intensity_(x|y|z)_scale
> - in_intensity_sampling_frequency(_available)
> - in_intensity_hardwaregain(_available)
> - in_intensity_integration_time
> 
> Signed-off-by: Christian Eggers <ceggers@...i.de>

Hi Christian,

Just one tiny nitpick.  Otherwise looks good to me!

Thanks for doing this,

Jonathan

> ---
> 
> On Thursday, 6 August 2020, 19:44:51 CEST, Jonathan Cameron wrote:
> Hi Jonathan,
> 
> > Hi Christian,
> > 
> > I'll take this, but please send a follow up patch to add documentation
> > for in_intensity_x_raw and all the other new ABI this adds in
> > Documentation/ABI/testing/sysfs-bus-iio
> > I should have mentioned that earlier, but kind of assumed we already
> > had these documented for some reason!  
> > [...]
> > Insert them into the relevant groups that already exist.  In some cases
> > it will just be adding an entry with no specific explanation.
> > For the _raw attribute add a bit more info about what x, y and z are
> > (basically just say they are from cie1931 (I think?)  
> 
> I added all sysfs entries which were not present in 5.8-rc6.
> 
> Best regards
> Christian
> 
>  Documentation/ABI/testing/sysfs-bus-iio | 26 ++++++++++++++++++++++++-
>  1 file changed, 25 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index d3e53a6d8331..14ae4bf053c5 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -40,6 +40,7 @@ Description:
>  		buffered samples and events for device X.
>  
>  What:		/sys/bus/iio/devices/iio:deviceX/sampling_frequency
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency
>  What:		/sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
>  What:		/sys/bus/iio/devices/triggerX/sampling_frequency
>  KernelVersion:	2.6.35
> @@ -55,6 +56,7 @@ Description:
>  		then it is to be found in the base device directory.
>  
>  What:		/sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
>  What:		/sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
>  What:		/sys/.../iio:deviceX/buffer/sampling_frequency_available
>  What:		/sys/bus/iio/devices/triggerX/sampling_frequency_available
> @@ -374,6 +376,9 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
>  What:		/sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
>  What:		/sys/bus/iio/devices/iio:deviceX/in_countY_scale
>  What:		/sys/bus/iio/devices/iio:deviceX/in_angl_scale
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
>  KernelVersion:	2.6.35
>  Contact:	linux-iio@...r.kernel.org
>  Description:
> @@ -484,6 +489,7 @@ Description:
>  		are listed in this attribute.
>  
>  What		/sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
>  What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
>  What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
>  What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
> @@ -494,6 +500,13 @@ Description:
>  		Hardware applied gain factor. If shared across all channels,
>  		<type>_hardwaregain is used.
>  
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available
> +KernelVersion:	5.10
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Lists all available hardware applied gain factors. Shared across all
> +		channels.
> +
>  What:		/sys/.../in_accel_filter_low_pass_3db_frequency
>  What:		/sys/.../in_magn_filter_low_pass_3db_frequency
>  What:		/sys/.../in_anglvel_filter_low_pass_3db_frequency
> @@ -1333,6 +1346,7 @@ Description:
>  		standardised CIE Erythemal Action Spectrum. UV index values range
>  		from 0 (low) to >=11 (extreme).
>  
> +What:		/sys/.../iio:deviceX/in_intensity_integration_time
>  What:		/sys/.../iio:deviceX/in_intensity_red_integration_time
>  What:		/sys/.../iio:deviceX/in_intensity_green_integration_time
>  What:		/sys/.../iio:deviceX/in_intensity_blue_integration_time
> @@ -1342,7 +1356,8 @@ KernelVersion:	3.12
>  Contact:	linux-iio@...r.kernel.org
>  Description:
>  		This attribute is used to get/set the integration time in
> -		seconds.
> +		seconds. If shared across all channels, <type>_integration_time
> +		is used.

If it is shared across 'ALL' channels then it will be just integration_time
If it is shared across all channels of a given type, it will be <type>_integration_time.

>  
>  What:		/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
>  KernelVersion:	4.0
> @@ -1739,3 +1754,12 @@ KernelVersion:	5.5
>  Contact:	linux-iio@...r.kernel.org
>  Description:
>  		One of the following thermocouple types: B, E, J, K, N, R, S, T.
> +
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_z_raw
> +KernelVersion:	5.10
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Unscaled light intensity according to CIE 1931/DIN 5033 color space.
> +		Units after application of scale are nano nanowatts per square meter.

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