linux-kernel - Re: [PATCH] iio: acpi: Add ACPI0008 Ambient Light Sensor

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Date:	Wed, 29 Apr 2015 13:51:21 +0200
From:	Gabriele Mazzotta <gabriele.mzt@...il.com>
To:	jic23@...nel.org
Cc:	knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
	marxin.liska@...il.com, marex@...x.de, rui.zhang@...el.com,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH] iio: acpi: Add ACPI0008 Ambient Light Sensor

On Wednesday 29 April 2015 13:27:25 Gabriele Mazzotta wrote:
> Add basic implementation of the ACPI0008 Ambient Light Sensor driver.
> This driver currently supports only the ALI property, yet is ready to
> be easily extended to handle ALC, ALT, ALP ones as well.
> 
> Signed-off-by: Martin Liska <marxin.liska@...il.com>
> Signed-off-by: Marek Vasut <marex@...x.de>
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@...il.com>
> Cc: Zhang Rui <rui.zhang@...el.com>
> ---
> This continues http://marc.info/?t=140163463200002
> I've made few adjustments over the original patch:
> 
>  - Code aligned with 4.1-rc1 and cleaned up
>  - Use signed integers to store values: sensors report 32bit signed
>    values. In particular, -1 is reported when the current reading
>    is above the supported range of sensitivity.
> 
> Most of the changes are just a consequence of the changes in the
> iio subsystem.
> 
> Gabriele

I'm sorry, I've just noticed that I haven't changed the value of
realbits in acpi_als_channels. This makes me wonder what would be the
proper value, given that this is a generic driver and all the
information I have are those in the ACPI specification (which states
what I reported here above).

Should I just set realbits to 32?

Thanks,
Gabriele
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