The kx022a driver supports a few different HW variants. A chip-info
structure is used to describe sensor specific details. Support for
sensors with different measurement g-ranges was added recently,
introducing sensor specific scale arrays.
The members of the chip-info structure have been documented using
kerneldoc. The newly added members omitted the documentation. It is nice
to have all the entries documented for the sake of the consistency.
Furthermore, the scale table format may not be self explatonary, nor how
the amount of scales is informed.
Add documentation to scale table entries to maintain consistency and to
make it more obvious how the scales should be represented.
Suggested-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Link: https://patch.msgid.link/Z1LDUj-naUdGSM6n@mva-rohm
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The ROHM KX134-1211 has very similar register interface as KX132-1211
does. The main differencies are the content of the "Who am I"
identification register and different g-ranges. The KX132-1211 can
measure ranges from +/- 2g to +/-16g where the KX134-1211 supports
measuring ranges +/- 8g to +/- 64g.
Support the ROHM KX134-1211.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/6e95af6b425df6a5ff5218825ec8923f1341f7c3.1732783834.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The register interface of the ROHM KX134ACR-LBZ accelerometer is
almost identical to the KX132ACR-LBZ. The main difference between these
accelerometers is that the KX134ACR-LBZ supports different G-ranges. The
driver can model this by informing different scale to users. Also, the
content of the "who_am_I" register is different.
Add an ID and scales for the KX134ACR-LBZ.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/27c43c595de1f3f698ace671922d4f5a48c3cd54.1732783834.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The register interface of the ROHM KX134ACR-LBZ accelerometer is almost
identical to the KX132ACR-LBZ. Main difference between these
accelerometers is that the KX134ACR-LBZ supports G-ranges +/- 8, 16,
32 and 64G. All the other sensors supported by the kx022a driver can
measure +/- 2, 4, 8 and 16G.
Prepare supporting the KX134ACR-LBZ with different G-ranges by storing
a pointer to the scale tables in IC specific structure.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/fc667b1495adf4e3f29ecbb336495c1f18b47e61.1732783834.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
dt-bindings: iio: Add KX132ACR-LBZ accelerometer
ROHM KX132ACR-LBZ is an accelerometer for industrial applications. It
has a subset of KX022A functionalities, dropping support for tap, free
fall and tilt detection engines. Also, the register interface is an exact
subset of what is found on KX022A (except the WHO_AM_I register value).
Add support for KX132ACR-LBZ.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/272065b9f35b817aff86b7760ff1aaaaaaa969f5.1695879676.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Since Kionix accelerometers use various numbers of bits to report data, a
device-specific function is required.
Implement the function as a callback in the device-specific chip_info structure
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Mehdi Djait <mehdi.djait.k@gmail.com>
Link: https://lore.kernel.org/r/9c550fb28e34915d473e379f812c7753f7643bae.1694867379.git.mehdi.djait.k@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add the chip_info structure to the driver's private data to hold all
the device specific infos.
Refactor the kx022a driver implementation to make it more generic and
extensible.
Acked-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Mehdi Djait <mehdi.djait.k@gmail.com>
Link: https://lore.kernel.org/r/7a31d0cdefba15d7c791252ec8bc5db553b3996b.1694867379.git.mehdi.djait.k@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
KX022A is a 3-axis accelerometer from ROHM/Kionix. The sensor features
include variable ODRs, I2C and SPI control, FIFO/LIFO with watermark IRQ,
tap/motion detection, wake-up & back-to-sleep events, four acceleration
ranges (2, 4, 8 and 16g), and probably some other cool features.
Add support for the basic accelerometer features such as getting the
acceleration data via IIO. (raw reads, triggered buffer [data-ready] or
using the WMI IRQ).
Important things to be added include the double-tap, motion
detection and wake-up as well as the runtime power management.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/758b00d6aea0a6431a5a3a78d557d449c113b21e.1666614295.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
