linux-kernel - [PATCH 0/3] iio: accel: kxcjk-1013: Add support for KX023-1025

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Message-Id: <20210511095409.9290-1-stephan@gerhold.net>
Date:   Tue, 11 May 2021 11:54:06 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Robert Yang <decatf@...il.com>, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Hans de Goede <hdegoede@...hat.com>,
        Stephan Gerhold <stephan@...hold.net>
Subject: [PATCH 0/3] iio: accel: kxcjk-1013: Add support for KX023-1025

KX023-1025 [1] is another accelerometer from Kionix that has lots
of additional functionality compared to KXCJK-1013. It combines the
motion interrupt functionality from KXCJK with the tap detection
from KXTF9, plus a lot more other functionality.

This patch set does not add support for any of the extra functionality,
but makes basic functionality work with the existing kxcjk-1013 driver.

At first, the register map for the KX023-1025 seems quite different
from the other accelerometers supported by the kxcjk-1013.
However, it turns out that at least most of the register bits
still mean the same for KX023-1025.

This patch set refactors the kxcjk-1013 driver a little bit
to get the register addresses from a chip-specific struct.
The register bits can be re-used for all the different chips.

The KX023-1025 is used in several smartphones from Huawei.
I tested these changes on a Huawei Ascend G7, someone else reported
they also work fine on the Huawei Honor 5X (codename "kiwi").

[1]: https://kionixfs.azureedge.net/en/datasheet/KX023-1025%20Specifications%20Rev%2012.0.pdf

Stephan Gerhold (3):
  dt-bindings: iio: kionix,kxcjk1013: Document kionix,kx023-1025
  iio: accel: kxcjk-1013: Refactor configuration registers into struct
  iio: accel: kxcjk-1013: Add support for KX023-1025

 .../bindings/iio/accel/kionix,kxcjk1013.yaml  |   1 +
 drivers/iio/accel/kxcjk-1013.c                | 217 ++++++++++++++----
 2 files changed, 176 insertions(+), 42 deletions(-)

-- 
2.31.1