Commit Graph

485 Commits

Author SHA1 Message Date
Greg Kroah-Hartman c2312ff575 Merge 5.7-rc7 into staging-next
We need the staging/iio fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-25 09:11:19 +02:00
Greg Kroah-Hartman cef077e6aa Second set of new device support, cleanups and features for IIO in the 5.8 cycle
Usual mixed back but with a few subsystem wide or device type
 wide cleanups.
 
 New device support
 
 * adis16475
   - New driver supporting adis16470, adis16475, adis16477, adis16465,
     adis16467, adis16500, adis16505 and adis16507.
     Includes some rework of the adis library to simplify using it
     for this new driver.
 * ak8974
   - Add support for Alps hscdt008a. ID only. Related patches add support
     for scale.
 * atlas-sensor
   - Add support for RTD-SM OEM temperature sensor.
 * cm32181
   - Add support for CM3218 including support for SMBUS alert via
     ACPI resources.
 * ltc2632
   - Add support for ltc2634-12/10/8 DACS including handling per
     device type numbers of channels.
 
 Major Features
 
 * cm32181
   - ACPI bindings including parsing CPM0 and CPM1 custom ACPI tables.
     Includes minor tidy ups and fixes.
 * vcnl4000
   - Add event support
   - Add buffered data capture support
   - Add control of sampling frequency
 
 Cleanups and minor fixes.
 
 * core
   - Trivial rework of iio_device_alloc to use an early return and
     improve readability.
   - Precursors to addition of multiple buffer support. So far
     minor refactoring.
 * subsystem wide
   - Use get_unaligned_be24 slightly improve readability over open
     coding it.
 * adis drivers
   - Use iio_get_debugfs_dentry access function.
 * bh1780, cm32181, cm3232, gp2ap02a00f, opt3001, st_uvis25, vl6180,
   dmard06, kxsd9
   - Drop use of of_match_ptr to allow ACPI based probing via PRP0001.
     Part of clear out of this to avoid cut and paste into new drivers.
 * ad5592r, ad5593r
   - Fix typos
 * ad5933
   - Use managed interfaces to automate error handling and remove.
 * ak8974
   - Fix wrong number of 'real bits' for buffered data.
   - Refactor to pull measurement code out as separate function.
     bmp280
   - Fix lack of clamp on range during data capture.
 * at91-sama5d2_adc
   - Handle unfinished conversions correctly.
   - Allow use of triggers other than it's own.
   - Reorganize buffer setup and tear down as part of long running
     subsystem wide rework.
 * ccs811
   - Add DT binding docs and match table.
   - Support external reset and wakeup pins.
 * hid-sensors
   - Reorganize buffer setup and tear down as part of long running
     subsystem wide rework.
 * ltr501
   - Constify some structs.
 * vcnl4000
   - Fix an endian issue by using explicit byte swapped i2c accessors.
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Merge tag 'iio-for-5.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of new device support, cleanups and features for IIO in the 5.8 cycle

Usual mixed back but with a few subsystem wide or device type
wide cleanups.

New device support

* adis16475
  - New driver supporting adis16470, adis16475, adis16477, adis16465,
    adis16467, adis16500, adis16505 and adis16507.
    Includes some rework of the adis library to simplify using it
    for this new driver.
* ak8974
  - Add support for Alps hscdt008a. ID only. Related patches add support
    for scale.
* atlas-sensor
  - Add support for RTD-SM OEM temperature sensor.
* cm32181
  - Add support for CM3218 including support for SMBUS alert via
    ACPI resources.
* ltc2632
  - Add support for ltc2634-12/10/8 DACS including handling per
    device type numbers of channels.

Major Features

* cm32181
  - ACPI bindings including parsing CPM0 and CPM1 custom ACPI tables.
    Includes minor tidy ups and fixes.
* vcnl4000
  - Add event support
  - Add buffered data capture support
  - Add control of sampling frequency

Cleanups and minor fixes.

* core
  - Trivial rework of iio_device_alloc to use an early return and
    improve readability.
  - Precursors to addition of multiple buffer support. So far
    minor refactoring.
* subsystem wide
  - Use get_unaligned_be24 slightly improve readability over open
    coding it.
* adis drivers
  - Use iio_get_debugfs_dentry access function.
* bh1780, cm32181, cm3232, gp2ap02a00f, opt3001, st_uvis25, vl6180,
  dmard06, kxsd9
  - Drop use of of_match_ptr to allow ACPI based probing via PRP0001.
    Part of clear out of this to avoid cut and paste into new drivers.
* ad5592r, ad5593r
  - Fix typos
* ad5933
  - Use managed interfaces to automate error handling and remove.
* ak8974
  - Fix wrong number of 'real bits' for buffered data.
  - Refactor to pull measurement code out as separate function.
    bmp280
  - Fix lack of clamp on range during data capture.
* at91-sama5d2_adc
  - Handle unfinished conversions correctly.
  - Allow use of triggers other than it's own.
  - Reorganize buffer setup and tear down as part of long running
    subsystem wide rework.
* ccs811
  - Add DT binding docs and match table.
  - Support external reset and wakeup pins.
* hid-sensors
  - Reorganize buffer setup and tear down as part of long running
    subsystem wide rework.
* ltr501
  - Constify some structs.
* vcnl4000
  - Fix an endian issue by using explicit byte swapped i2c accessors.

* tag 'iio-for-5.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (74 commits)
  iio: light: ltr501: Constify structs
  staging: iio: ad5933: attach life-cycle of kfifo buffer to parent device and use managed calls throughout
  iio: bmp280: fix compensation of humidity
  iio: light: cm32181: Fix integartion time typo
  iio: light: cm32181: Add support for parsing CPM0 and CPM1 ACPI tables
  iio: light: cm32181: Make lux_per_bit and lux_per_bit_base_it runtime settings
  iio: light: cm32181: Use units of 1/100000th for calibscale and lux_per_bit
  iio: light: cm32181: Change reg_init to use a bitmap of which registers to init
  iio: light: cm32181: Handle CM3218 ACPI devices with 2 I2C resources
  iio: light: cm32181: Clean up the probe function a bit
  iio: light: cm32181: Add support for the CM3218
  iio: light: cm32181: Add some extra register defines
  iio: light: cm32181: Add support for ACPI enumeration
  iio: light: cm32181: Switch to new style i2c-driver probe function
  iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger
  iio: vcnl4000: Add buffer support for VCNL4010/20.
  iio: vcnl4000: Add sampling frequency support for VCNL4010/20.
  iio: vcnl4000: Add event support for VCNL4010/20.
  iio: vcnl4000: Factorize data reading and writing.
  iio: vcnl4000: Fix i2c swapped word reading.
  ...
2020-05-15 16:03:28 +02:00
Alexandru Ardelean b7190859ab iio: imu: adis16xxx: use helper to access iio core debugfs dir
The IIO core provides a iio_get_debugfs_dentry() helper.
It seems that the ADIS IMU drivers access that field directly.

This change converts them to use iio_get_debugfs_dentry() instead.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03 14:47:56 +01:00
Lorenzo Bianconi 8f9a5249e3 iio: imu: st_lsm6dsx: enable 833Hz sample frequency for tagged sensors
Enable 833Hz ODR for sensors that supports tagged hw FIFO:
- LSM6DSO/LSM6DSOX
- LSM6DSR/LSM6DSRX
- ASM330LHH

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03 09:47:21 +01:00
Nuno Sá fff7352bf7 iio: imu: Add support for adis16475
Support ADIS16475 and similar IMU devices. These devices are
a precision, miniature MEMS inertial measurement unit (IMU) that
includes a triaxial gyroscope and a triaxial accelerometer. Each
inertial sensor combines with signal conditioning that optimizes
dynamic performance.

The driver adds support for the following devices:
* adis16470, adis16475, adis16477, adis16465, adis16467, adis16500,
  adis16505, adis16507.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03 09:47:18 +01:00
Greg Kroah-Hartman e8014d83f6 Merge 5.7-rc3 into staging-next
We need the staging fixes in here too, and this resolves a merge issue
with the vt6656 driver.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-27 12:20:40 +02:00
Dan Carpenter 115c215a7e iio: imu: st_lsm6dsx: unlock on error in st_lsm6dsx_shub_write_raw()
We need to release a lock if st_lsm6dsx_check_odr() fails, we can't
return directly.

Fixes: 76551a3c3d ("iio: imu: st_lsm6dsx: specify slave odr in slv_odr")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-25 18:33:54 +01:00
Nuno Sá 3e04cb60e8 iio: adis: Support different burst sizes
Add burst_max_len to `adis_burst`. This is useful for devices which
support different burst modes with different sizes. The buffer to be
used in the spi transfer is allocated with this variable making sure
that has space for all burst modes. The spi transfer length should hold
the "real" burst length depending on the current burst mode configured
in the device.

Moreover, `extra_len` in `adis_burst` is made const and it should
contain the smallest extra length necessary for a burst transfer. In
`struct adis` was added a new `burst_extra_len` that should hold the
extra bytes needed depending on the device instance being used.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-25 16:11:56 +01:00
Nuno Sá b9c5eec725 iio: adis: Add adis_update_bits() APIs
This patch adds a `regmap_update_bits()` like API to the ADIS library.
It provides locked and unlocked variant.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-25 16:10:44 +01:00
Nuno Sá 698211065d iio: imu: adis: Add irq flag variable
There are some ADIS devices that can configure the data ready pin
polarity. Hence, we cannot hardcode our IRQ mask as IRQF_TRIGGER_RISING
since we might want to have it as IRQF_TRIGGER_FALLING.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-25 16:09:30 +01:00
Nuno Sá fec86c6b83 iio: imu: adis: Add Managed device functions
This patch adds support for a managed device version of
adis_setup_buffer_and_trigger. It works exactly as the original
one but it calls all the devm_iio_* functions to setup an iio
buffer and trigger. Hence we do not need to care about cleaning those
and we do not need to support a remove() callback for every driver using
the adis library.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-25 16:08:06 +01:00
Jean-Baptiste Maneyrol 0a2bf9200a iio: imu: inv_mpu6050: fix suspend/resume with runtime power
Suspend/resume were not working correctly with pm runtime.
Now suspend check if the chip is already suspended, and
resume put runtime pm in the correct state.

Issues seen prior to this were:

When entering suspend, there was an error in logs because we
were disabling vddio regulator although it was already disabled.
And when resuming, the chip was pull back to full power but the
pm_runtime state was not updated. So it was believing it was
still suspended.

Fixes: 4599cac846 ("iio: imu: inv_mpu6050: use runtime pm with autosuspend")
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 17:50:02 +01:00
Lorenzo Bianconi 3a63da26db iio: imu: st_lsm6dsx: flush hw FIFO before resetting the device
flush hw FIFO before device reset in order to avoid possible races
on interrupt line 1. If the first interrupt line is asserted during
hw reset the device will work in I3C-only mode (if it is supported)

Fixes: 801a6e0af0 ("iio: imu: st_lsm6dsx: add support to LSM6DSO")
Fixes: 43901008fd ("iio: imu: st_lsm6dsx: add support to LSM6DSR")
Reported-by: Mario Tesi <mario.tesi@st.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Vitor Soares <vitor.soares@synopsys.com>
Tested-by: Vitor Soares <vitor.soares@synopsys.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 17:50:01 +01:00
Jonathan Cameron d7d3a1327b iio:imu:mpu6050: Tidy up parameters to regmap_bulk functions.
A mixture of:
* Casts to u8 * for the val parameter which is void * and so needs no cast.
* Explicit sizes when we can use sizeof on the destination / source variable.

Not broken in anyway, I'm just trying to tidy up the is in the subsystem to
avoid it getting cut and paste into new drivers.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2020-04-19 16:56:39 +01:00
Lorenzo Bianconi 780f1c1761 iio: imu: st_lsm6dsx: drop huge include in sensor-hub driver
st_lsm6dsx is a standalone driver for STM IMU sensors and does not rely
on st_sensor common framework, so it does not include st_sensor common
definitions.
In st_lsm6dsx_shub driver st_sensors.h is used just to introduce the
default wai address for LIS3MDL sensor.
Drop this largely unconnected include file and introduce the default wai
address for LIS3MDL in st_lsm6dsx_ext_dev_settings register map

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:38 +01:00
Christophe JAILLET 97f1755ee2 iio: imu: adis: Add a missing '\n' in a log message
Message logged by 'dev_xxx()' or 'pr_xxx()' should end with a '\n'.

Fixes: 1fd4567026 ("iio: imu: adis: add support product ID check in adis_initial_startup")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:34 +01:00
Jimmy Assarsson 394dedec77 iio: imu: st_lsm6dsx: Add sensor hub device LIS3MDL
Add LIS3MDL register map to sensor hub device table.
Tested with LSM6DSM.

Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:26 +01:00
Jimmy Assarsson a0e35e2416 iio: imu: st_lsm6dsx: Increase ODR_LIST_SIZE
Support for sensor with up to 8 different ODR settings.
Required for supporting LIS3MDL as sensor hub slave device.

Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:25 +01:00
Rohit Sarkar 2ca73823d0 iio: imu: adis16460: use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE_ATTRIBUTE
debugfs_create_file_unsafe does not protect the fops handed to it
against file removal. DEFINE_DEBUGFS_ATTRIBUTE makes the fops aware of
the file lifetime and thus protects it against removal.

Signed-off-by: Rohit Sarkar <rohitsarkar5398@gmail.com>
Tested-by Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:25 +01:00
Rohit Sarkar ae1d37a9bb iio: imu: adis16400: use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE_ATTRIBUTE
debugfs_create_file_unsafe does not protect the fops handed to it
against file removal. DEFINE_DEBUGFS_ATTRIBUTE makes the fops aware of
the file lifetime and thus protects it against removal.

Signed-off-by: Rohit Sarkar <rohitsarkar5398@gmail.com>
Tested-by Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:25 +01:00
Lorenzo Bianconi 4ab717d9e8 iio: imu: st_lsm6dsx: configure full scale on slave device if supported
Introduce st_lsm6dsx_shub_set_full_scale routine in order to configure
the i2c slave device sensitivity

Tested-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:24 +01:00
Rohit Sarkar 4b7ef6040f iio: imu: inv_mpu6050: add debugfs register r/w interface
The debugfs interface provides direct access to read and write device
registers if debugfs is enabled.

Signed-off-by: Rohit Sarkar <rohitsarkar5398@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:20 +01:00
Wolfram Sang b5fbf0568c iio: imu: inv_mpu6050: convert to use i2c_new_client_device()
Move away from the deprecated API and return the shiny new ERRPTR where
useful.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:18 +01:00
Nishant Malpani 02566b459f iio: imu: inv_mpu6050_spi: Use vsprintf extension %pe for symbolic error name
Utilize %pe format specifier from vsprintf while printing error logs
with dev_err(). Discards the use of unnecessary explicit casting and
prints symbolic error name which might prove to be convenient during
debugging.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:18 +01:00
Nishant Malpani fb3f7ab773 iio: imu: inv_mpu6050_i2c: Use vsprintf extension %pe for symbolic error name
Utilize %pe format specifier from vsprintf while printing error logs
with dev_err(). Discards the use of unnecessary explicit casting and
prints symbolic error name which might prove to be convenient during
debugging.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:17 +01:00
Nishant Malpani 35c9c8d5ec iio: imu: bmi160_spi: Use vsprintf extension %pe for symbolic error name
Utilize %pe format specifier from vsprintf while printing error logs
with dev_err(). Discards the use of unnecessary explicit casting and
prints symbolic error name which might prove to be convenient during
debugging.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:17 +01:00
Nishant Malpani 6e924c526a iio: imu: bmi160_i2c: Use vsprintf extension %pe for symbolic error name
Utilize %pe format specifier from vsprintf while printing error logs
with dev_err(). Discards the use of unnecessary explicit casting and
prints symbolic error name which might prove to be convenient during
debugging.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 16:56:16 +01:00
Lorenzo Bianconi 76551a3c3d iio: imu: st_lsm6dsx: specify slave odr in slv_odr
Introduce slv_odr in ext_info data structure in order to distinguish
between sensor hub trigger (accel sensor) odr and i2c slave odr and
properly compute samples in FIFO pattern

Fixes: e485e2a2cf ("iio: imu: st_lsm6dsx: enable sensor-hub support for lsm6dsm")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-28 16:35:03 +00:00
Lorenzo Bianconi 7762902c89 iio: imu: st_lsm6dsx: fix read misalignment on untagged FIFO
st_lsm6dsx suffers of a read misalignment on untagged FIFO when
all 3 supported sensors (accel, gyro and ext device) are running
at different ODRs (the use-case is reported in the LSM6DSM Application
Note at pag 100).
Fix the issue taking into account decimation factor reading the FIFO
pattern.

Fixes: e485e2a2cf ("iio: imu: st_lsm6dsx: enable sensor-hub support for lsm6dsm")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-28 16:35:02 +00:00
Sergiu Cuciurean 61e618be6a iio: imu: adis_buffer: Use new structure for SPI transfer delays
In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.

The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).

[1] commit bebcfd272d ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")

Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:45 +00:00
Jean-Baptiste Maneyrol 74a40e19f9 iio: imu: inv_mpu6050: temperature only work with accel/gyro
Temperature sensor works correctly only when accel and/or gyro
is turned on. Prevent polling value if they are not running.
Anyway it doesn't make sense to use it without sensor engines
on.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:40 +00:00
Jean-Baptiste Maneyrol 4599cac846 iio: imu: inv_mpu6050: use runtime pm with autosuspend
Use runtime power management for handling chip power and
sensor engines on/off. Simplifies things a lot since pm
runtime already has reference counter.
Usage of autosuspend reduces the number of power on/off. This
makes polling interface now usable to get data at low
frequency.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:39 +00:00
Jean-Baptiste Maneyrol 5e95ca3637 iio: imu: inv_mpu6050: dynamic sampling rate change
Sampling rate can be changed while the chip is running. It can
be useful thus do not prevent it.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:39 +00:00
Jean-Baptiste Maneyrol 4c1e014701 iio: imu: inv_mpu6050: factorize fifo enable/disable
Rework fifo enable/disable in a separate function.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:39 +00:00
Jean-Baptiste Maneyrol ffc9648a52 iio: imu: inv_mpu6050: fix data polling interface
When reading data with the polling interface, we need to wait
at 1 sampling period to have a sample.
For gyroscope and magnetometer, we need to wait for 2 periods
before having a correct sample.

Not suitable for stable or backporting.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:38 +00:00
Jean-Baptiste Maneyrol 92e7407ab1 iio: imu: inv_mpu6050: rewrite power and engine management
Rewrite clock management to use automatic clock switching
present since MPU6500.
Sensors engine management can now turn on or off a batch of
sensors which simplifies usage a lot.
Temperature sensor is now turned on/off depending on usage.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:38 +00:00
Jean-Baptiste Maneyrol 398da99423 iio: imu: inv_mpu6050: reduce sleep time when turning regulators on
Turning vdd regulator on requires a consequent sleep for the
chip to power on correctly.
Turning vddio regulator is much faster.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:38 +00:00
Jean-Baptiste Maneyrol c1bfe9c818 iio: imu: inv_mpu6050: add all signal path resets at init
Old chips using spi require for a full reset to manually reset
all signal path. This does not harm when using i2c so do it
inconditionally. Exclude i2c only chips.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:37 +00:00
Jean-Baptiste Maneyrol 5621a63a01 iio: imu: inv_mpu6050: early init of chip_config for use at setup
Init chip_config early and use its values for initial setup.
More coherent, prevent possible mistakes.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:37 +00:00
Jean-Baptiste Maneyrol 3c1024aa99 iio: imu: inv_mpu6050: simplify polling magnetometer
Do not change the sampling rate value. Let userspace decide what
is the sampling rate to use.
Read only the requested axis.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:37 +00:00
Jean-Baptiste Maneyrol a3aaf7770a iio: imu: inv_mpu6050: set power on/off only once during all init
This way there is no need anymore to export the power function to
i2c and spi modules.
Bus setup is done inside init when power is on and the result is
now checked.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:37 +00:00
Jean-Baptiste Maneyrol 14c046ed17 iio: imu: inv_mpu6050: delete useless check
If we are here it means we have fifo enabled for 1 sensor
at least. And interrupt is always required for using trigger.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:36 +00:00
Jean-Baptiste Maneyrol ddfd781dc4 iio: imu: inv_mpu6050: enable i2c aux mux bypass only once
i2c auxiliary mux is done by analog switches. You do not need to
set them for every i2c transfer.
Just set i2c bypass bit at init and do noting in i2c de/select.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:36 +00:00
Nuno Sá 62504d1b44 iio: adis16460: Make use of __adis_initial_startup
All of the actions done in `adis16460_initial_setup()` are now done in
`__adis_initial_startup()` so, there's no need for code duplication.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:31 +00:00
Nuno Sá 366a543421 iio: adis16480: Make use of __adis_initial_startup
All actions done in `adis16480_initial_setup()` are now done in
`__adis_initial_startup()` so, there's no need for code duplication.
Furthermore, the call to `adis16480_initial_setup()` is done before any
device configuration since the device will be reset if not already (via
rst pin). This is actually fixing a potential bug since `adis_reset()` was
being called after configuring the device which is obviously a problem.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:31 +00:00
Alexandru Ardelean 1fd4567026 iio: imu: adis: add support product ID check in adis_initial_startup
Each driver/chip that wants to validate it's product id, can now
specify a 'prod_id_reg' and an expected 'prod_id' value.
The 'prod_id' value is intentionally left 0 (uninitialized). There aren't
(yet) any product IDs with value 0; this enforces that both 'prod_id_reg'
and 'prod_id' are specified.

At the very least, this routine validates that the SPI connection to the
ADIS chip[s] works well.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:31 +00:00
Nuno Sá ecb010d441 iio: imu: adis: Refactor adis_initial_startup
All the ADIS devices perform, at the beginning, a self test to make sure
the device is in a sane state. Previously, the logic was that the self-test
was performed in adis_initial_startup() and if that failed a reset was done
and then a self-test was attempted again.

This change unifies the reset mechanism under the adis_initial_startup()
call. A HW reset will be done if  GPIO is configured, or a SW reset
otherwise. This should make sure that the chip is in a sane state for
self-test. Once the reset is done, the self-test operation will be
performed. If anything goes wrong with self-test, the driver should just
bail/error-out (i.e. no second attempt). The chip would likely not be a in
a sane state state if the self-test fails after a reset.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:30 +00:00
Nuno Sá fdcf6bbb4e iio: imu: adis: Add self_test_reg variable
This patch adds a dedicated self_test_reg variable. This is also a step
to let new drivers make use of `adis_initial_startup()`. Some devices
use MSG_CTRL reg to request a self_test command while others use the
GLOB_CMD register.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:30 +00:00
Alexandru Ardelean 3f17ada8f3 iio: imu: adis: add unlocked __adis_initial_startup()
This change splits the __adis_initial_startup() away from
adis_initial_startup(). The unlocked version can be used in certain calls
during probe, where races won't happen since the ADIS driver may not be
registered yet with IIO.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:29 +00:00
Alexandru Ardelean 99460853a8 iio: imu: adis16400: initialize adis_data statically
This change overrides commit 380b107bbf ("iio: adis: Introduce timeouts
structure"). It removes the memory allocation and moves the 'adis_data'
information to be static on the chip_info struct.

This also adds a timeout structure to ADIS16334, since it was initially
omitted. This was omitted (by accident) when the change was done.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:29 +00:00