From: David Lechner <dlechner@baylibre.com>
To: Taha Ed-Dafili <0rayn.dev@gmail.com>, jic23@kernel.org
Cc: rdunlap@infradead.org, skhan@linuxfoundation.org,
linux-kernel-mentees-archive@lists.linuxfoundation.org,
nuno.sa@analog.com, andy@kernel.org, corbet@lwn.net,
lars@metafoo.de, Michael.Hennerich@analog.com,
linux-iio@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 3/4] iio: accel: adxl345: Implement event scaling for ABI compliance
Date: Sat, 14 Feb 2026 11:09:28 -0600 [thread overview]
Message-ID: <40a0d410-731a-43e0-9078-bc8190ccba87@baylibre.com> (raw)
In-Reply-To: <af774bb9-817d-4d88-9fe3-54468949ea54@baylibre.com>
On 2/14/26 11:02 AM, David Lechner wrote:
> On 2/8/26 9:05 AM, Taha Ed-Dafili wrote:
>> The ADXL345 uses a fixed threshold resolution of 62.5 mg/LSB for
>> event-related registers. Previously, the driver reported raw
>> values without a scale factor.
>>
>> Implement IIO_EV_INFO_SCALE for all event types to provide the
>> conversion factor (0.612915 m/s^2) as required by the IIO ABI.
>>
>> Suggested-by: Jonathan Cameron <jic23@kernel.org>
>> Signed-off-by: Taha Ed-Dafili <0rayn.dev@gmail.com>
>> ---
>> drivers/iio/accel/adxl345_core.c | 28 ++++++++++++++++++++++------
>> 1 file changed, 22 insertions(+), 6 deletions(-)
>>
...
>> @@ -228,15 +230,19 @@ static const struct iio_event_spec adxl345_events[] = {
>> .type = IIO_EV_TYPE_GESTURE,
>> .dir = IIO_EV_DIR_SINGLETAP,
>> .mask_separate = BIT(IIO_EV_INFO_ENABLE),
>> - .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
>> + .mask_shared_by_type =
>> + BIT(IIO_EV_INFO_VALUE) |
>> + BIT(IIO_EV_INFO_SCALE) |
>
> What is the units for gesture that we are scaling to?
After looking at the docs, I understand this now, so no need
to reply.
>
>> BIT(IIO_EV_INFO_TIMEOUT),
>> },
next prev parent reply other threads:[~2026-02-14 17:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-08 15:05 [PATCH v3 0/4] iio: accel: adxl345: Add event scaling and doc fixes Taha Ed-Dafili
2026-02-08 15:05 ` [PATCH v3 1/4] docs: iio: adxl345: fix typos and grammar Taha Ed-Dafili
2026-02-08 15:05 ` [PATCH v3 2/4] iio: core: Add IIO_EV_INFO_SCALE to event info Taha Ed-Dafili
2026-02-08 15:05 ` [PATCH v3 3/4] iio: accel: adxl345: Implement event scaling for ABI compliance Taha Ed-Dafili
2026-02-14 17:02 ` David Lechner
2026-02-14 17:09 ` David Lechner [this message]
2026-02-14 18:22 ` Andy Shevchenko
2026-02-14 21:49 ` Randy Dunlap
2026-02-08 15:05 ` [PATCH v3 4/4] docs: iio: adxl345: update math and examples for scaling Taha Ed-Dafili
2026-02-14 17:11 ` David Lechner
2026-02-15 19:29 ` Jonathan Cameron
2026-02-14 17:21 ` [PATCH v3 0/4] iio: accel: adxl345: Add event scaling and doc fixes Jonathan Cameron
2026-02-15 15:57 ` Jonathan Cameron
2026-02-15 17:11 ` Taha Ed-Dafili
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