[PATCH 00/12] iio: imu: new inv_icm42600 driver

Jean-Baptiste Maneyrol
2020-05-07T14:43:13Z

This series add a new driver for managing InvenSense ICM-426xx 6-axis IMUs.
This next generation of chips includes new generations of 3-axis gyroscope
and 3-axis accelerometer, support of I3C in addition to I2C and SPI, and
intelligent MotionTracking features like pedometer, tilt detection, and
tap detection.

This series is delivering a driver supporting gyroscope, accelerometer and
temperature data, with polling and buffering using hwfifo and watermark,
on I2C and SPI busses.

Gyroscope and accelerometer sensors are completely independent and can have
different ODRs. Since there is only a single FIFO a specific value is used to
mark invalid data. For keeping the device standard we are de-multiplexing data
from the FIFO to 2 IIO devices with 2 buffers, 1 for the accelerometer and 1
for the gyroscope. This architecture also enables to easily turn each sensor
on/off without impacting the other. The IIO devices are using triggered buffer
as sub-interrupts of the device iio trigger using the interrupt pin. A complex
timestamping mechanism is added to handle correctly FIFO watermark and dynamic
changes.

Jean-Baptiste Maneyrol (12):
iio: imu: inv_icm42600: add core of new inv_icm42600 driver
iio: imu: inv_icm42600: add I2C driver for inv_icm42600 driver
iio: imu: inv_icm42600: add SPI driver for inv_icm42600 driver
iio: imu: inv_icm42600: add gyroscope IIO device
iio: imu: inv_icm42600: add accelerometer IIO device
iio: imu: inv_icm42600: add temperature sensor support
iio: imu: add Kconfig and Makefile for inv_icm42600 driver
iio: imu: inv_icm42600: add device interrupt trigger
iio: imu: inv_icm42600: add buffer support in iio devices
iio: imu: inv_icm42600: add accurate timestamping
dt-bindings: iio: imu: Add inv_icm42600 documentation
MAINTAINERS: add entry for inv_icm42600 6-axis imu sensor

.../bindings/iio/imu/invensense,icm42600.yaml | 90 +++
MAINTAINERS | 8 +
drivers/iio/imu/Kconfig | 1 +
drivers/iio/imu/Makefile | 1 +
drivers/iio/imu/inv_icm42600/Kconfig | 30 +
drivers/iio/imu/inv_icm42600/Makefile | 16 +
drivers/iio/imu/inv_icm42600/inv_icm42600.h | 400 +++++++++
.../iio/imu/inv_icm42600/inv_icm42600_accel.c | 752 +++++++++++++++++
.../imu/inv_icm42600/inv_icm42600_buffer.c | 373 +++++++++
.../imu/inv_icm42600/inv_icm42600_buffer.h | 162 ++++
.../iio/imu/inv_icm42600/inv_icm42600_core.c | 674 +++++++++++++++
.../iio/imu/inv_icm42600/inv_icm42600_gyro.c | 764 ++++++++++++++++++
.../iio/imu/inv_icm42600/inv_icm42600_i2c.c | 117 +++
.../iio/imu/inv_icm42600/inv_icm42600_spi.c | 117 +++
.../iio/imu/inv_icm42600/inv_icm42600_temp.c | 86 ++
.../iio/imu/inv_icm42600/inv_icm42600_temp.h | 32 +
.../imu/inv_icm42600/inv_icm42600_timestamp.c | 246 ++++++
.../imu/inv_icm42600/inv_icm42600_timestamp.h | 82 ++
.../imu/inv_icm42600/inv_icm42600_trigger.c | 188 +++++
19 files changed, 4139 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
create mode 100644 drivers/iio/imu/inv_icm42600/Kconfig
create mode 100644 drivers/iio/imu/inv_icm42600/Makefile
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600.h
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_temp.h
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.c
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.h
create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_trigger.c

--
2.17.1