kernel/linux.git/drivers/iio/imu, branch v6.2.2

iio: imu: fxos8700: fix MAGN sensor scale and unit

2023-01-21T18:15:19+00:00

+/-1200uT is a MAGN sensor full measurement range. Magnetometer scale is the magnetic sensitivity parameter. It is referenced as 0.1uT according to datasheet and magnetometer channel unit is Gauss in sysfs-bus-iio documentation. Gauss and uTesla unit conversion relationship as follows: 0.1uT = 0.001Gs. Set magnetometer scale and available magnetometer scale as fixed 0.001Gs. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20230118074227.1665098-5-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: remove definition FXOS8700_CTRL_ODR_MIN

2023-01-21T18:15:09+00:00

FXOS8700_CTRL_ODR_MIN is not used but value is probably wrong. Remove it for a good readability. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20230118074227.1665098-4-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix failed initialization ODR mode assignment

2023-01-21T18:14:59+00:00

The absence of correct offset leads a failed initialization ODR mode assignment. Select MAX ODR mode as the initialization ODR mode by field mask and FIELD_PREP. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20230118074227.1665098-3-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix incorrect ODR mode readback

2023-01-21T18:14:48+00:00

The absence of a correct offset leads an incorrect ODR mode readback after use a hexadecimal number to mark the value from FXOS8700_CTRL_REG1. Get ODR mode by field mask and FIELD_GET clearly and conveniently. And attach other additional fix for keeping the original code logic and a good readability. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20230118074227.1665098-2-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: st_lsm6dsx: fix build when CONFIG_IIO_TRIGGERED_BUFFER=m

2023-01-08T12:14:45+00:00

The following kernel linkage error: st_lsm6dsx_core.o: in function `st_lsm6dsx_sw_buffers_setup': st_lsm6dsx_core.c:2578: undefined reference to `devm_iio_triggered_buffer_setup_ext' is caused by the fact that the object owning devm_iio_triggered_buffer_setup_ext() (drivers/iio/buffer/industrialio-triggered-buffer.o) is allowed to be built as module when its user (drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c) is built-in. The st_lsm6dsx driver already has a "select IIO_BUFFER", so add another select for IIO_TRIGGERED_BUFFER, to make that option follow what is set for the st_lsm6dsx driver. This is similar to what other iio drivers do. Fixes: 2cfb2180c3e8 ("iio: imu: st_lsm6dsx: introduce sw trigger support") Signed-off-by: Vladimir Oltean Link: https://lore.kernel.org/r/20230103130348.1733467-1-vladimir.oltean@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix ACCEL measurement range selection

2022-12-28T17:20:04+00:00

When device is in active mode, it fails to set an ACCEL full-scale range(2g/4g/8g) in FXOS8700_XYZ_DATA_CFG. This is not align with the datasheet, but it is a fxos8700 chip behavior. Keep the device in standby mode before setting ACCEL full-scale range into FXOS8700_XYZ_DATA_CFG in chip initialization phase and setting scale phase. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20221208071911.2405922-6-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix IMU data bits returned to user space

2022-12-28T17:20:04+00:00

ACCEL output data registers contain the X-axis, Y-axis, and Z-axis 14-bit left-justified sample data and MAGN output data registers contain the X-axis, Y-axis, and Z-axis 16-bit sample data. The ACCEL raw register output data should be divided by 4 before sent to userspace. Apply a 2 bits signed right shift to the raw data from ACCEL output data register but keep that from MAGN sensor as the origin. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20221208071911.2405922-5-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix incomplete ACCEL and MAGN channels readback

2022-12-28T17:20:04+00:00

The length of ACCEL and MAGN 3-axis channels output data is 6 byte individually. However block only read 3 bytes data into buffer from ACCEL or MAGN output data registers every time. It causes an incomplete ACCEL and MAGN channels readback. Set correct value count for regmap_bulk_read to get 6 bytes ACCEL and MAGN channels readback. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20221208071911.2405922-4-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix swapped ACCEL and MAGN channels readback

2022-12-28T17:20:04+00:00

Because ACCEL and MAGN channels data register base address is swapped the accelerometer and magnetometer channels readback is swapped. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20221208071911.2405922-3-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron

iio: imu: fxos8700: fix map label of channel type to MAGN sensor

2022-12-28T17:20:03+00:00

FXOS8700 is an IMU sensor with ACCEL sensor and MAGN sensor. Sensor type is indexed by corresponding channel type in a switch. IIO_ANGL_VEL channel type mapped to MAGN sensor has caused confusion. Fix the mapping label of "IIO_MAGN" channel type instead of "IIO_ANGL_VEL" channel type to MAGN sensor. Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song Link: https://lore.kernel.org/r/20221208071911.2405922-2-carlos.song@nxp.com Cc: Signed-off-by: Jonathan Cameron