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From: Mathieu Othacehe <m.othacehe@gmail.com>
To: Jonathan Cameron <jic23@jic23.retrosnub.co.uk>
Cc: linux-iio@vger.kernel.org, lars@metafoo.de,
	"pierre-moana.levesque\@parrot.com"
	<pierre-moana.levesque@parrot.com>
Subject: Re: isl29501 and multiple calibration registers
Date: Tue, 19 Jun 2018 12:24:48 +0200	[thread overview]
Message-ID: <87k1qvhy4v.fsf@gmail.com> (raw)
In-Reply-To: <20180616181355.769b990e@archlinux>


Hi Jonathan,

> I'm not really keen on doing that (as hardware gain has a well defined
> different meaning).  This is a rather opaque device specific value.

Ok, I'll keep it as an extended field then.

> This is interesting as it's specifically documented as requiring no external
> actions.  Oh well, another clear datasheet.

:)

> You are welcome, this is a fiddly device!  Sane hardware would store
> all these in on chip flash, but I guess it's a cost thing to not do so.

I sent a patch with the updated documentation and the driver
itself. Note that I left the read/write of float values as TODO
(returning -EINVAL when asked for).

This way I hope we can keep reviewing this driver, will trying to find
the best way to deal with those annoying floating numbers.

Thanks,

Mathieu

(I cc'd Pierre-Moana who is working with me on this driver)

      reply	other threads:[~2018-06-19 10:24 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-25 16:01 isl29501 and multiple calibration registers Mathieu Othacehe
2018-05-27  8:59 ` Jonathan Cameron
2018-05-28 15:38   ` Mathieu Othacehe
2018-06-03 14:38     ` Jonathan Cameron
2018-06-05 10:18       ` Mathieu Othacehe
2018-06-10 13:29         ` Jonathan Cameron
2018-06-11 14:57           ` Mathieu Othacehe
2018-06-15 12:34             ` Mathieu Othacehe
2018-06-16 17:46               ` Mostly question of whether we should support floating point values from hardware (was Re: isl29501 and multiple calibration registers) Jonathan Cameron
2018-06-27 13:43                 ` Mathieu Othacehe
2018-06-30 17:55                   ` Jonathan Cameron
2018-06-16 17:13             ` isl29501 and multiple calibration registers Jonathan Cameron
2018-06-19 10:24               ` Mathieu Othacehe [this message]

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