linux-kernel - [PATCH 0/3] iio: Fix integration time units for iio-gts

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Message-ID: <cover.1681301472.git.mazziesaccount@gmail.com>
Date:   Wed, 12 Apr 2023 15:26:15 +0300
From:   Matti Vaittinen <mazziesaccount@...il.com>
To:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Matti Vaittinen <mazziesaccount@...il.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] iio: Fix integration time units for iio-gts

The newly added iio-gts-helper (gain time scale helper) errorneously
reports available integration times as micro seconds. The same mistake
is in newly added BU27034 light sensor driver. Fix these by adding new
IIO_VAL type, IIO_VAL_INT_MICRO - which can be used for micro <unit>
values where the integer part is zero.

NOTE:
I did not have the time to test the gts-helpers with integration times
which are greater than 1 second. Currently there is no other in-tree users
besides the bu27034, which does always use integration times smaller
than 1 second. When greater than 1 second times are needed, this needs
to be revised. (Or, when the devm_* interface kunit test support gets
added). Right now this should be a quick fix to integration time
handling before the bug manifests itself in the user-space).

I am planning to test (and re-work if needed) the gts-helpers available
integration time list for > 1Sec times - but I most probably don't have
the time for that during this or next week. (Don't know about the
weekend though - but probably not.)

--

Matti Vaittinen (3):
  iio: core: add IIO_VAL_INT_MICRO
  iio: gts: fix units of available integration times
  iio: bu27034: Fix integration time units

 drivers/iio/industrialio-core.c       | 4 ++++
 drivers/iio/industrialio-gts-helper.c | 2 +-
 drivers/iio/light/rohm-bu27034.c      | 7 +++++--
 include/linux/iio/types.h             | 1 +
 4 files changed, 11 insertions(+), 3 deletions(-)

base-commit: c86b0e73f0bebbb0245ef2bac4cf269d61ff828c
-- 
2.39.2

-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =] 

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