Commit Graph

4007 Commits

Author SHA1 Message Date
Linus Torvalds
8645f09bad - New Drivers
- Add support for IQS620A/621/622/624/625 Azoteq IQS62X Sensors
 
  - New Device Support
    - Add support for ADC, IRQ, Regulator, RTC and WDT to Ricoh RN5T618 PMIC
    - Add support for Comet Lake to Intel LPSS
 
  - New Functionality
    - Add support for Charger Detection to Spreadtrum SC27xx PMICs
    - Add support for Interrupt Polarity to Dialog Semi DA9062/61 PMIC
    - Add ACPI enumeration support to Diolan DLN2 USB Adaptor
 
  - Fix-ups
    - Device Tree; iqs62x, rn5t618, cros_ec_dev, stm32-lptimer, rohm,bd71837, rohm,bd71847
    - I2C registration; rn5t618
    - Kconfig; MFD_CPCAP, AB8500_CORE, MFD_WM8994, MFD_WM97xx, MFD_STPMIC1
    - Use flexible-array members; omap-usb-tll, qcom-pm8xxx
    - Remove unnecessary casts; omap-usb-host, omap-usb-tll
    - Power (suspend/resume/poweroff) enhancements; rk808
    - Improve error/sanity checking; dln2
    - Use snprintf(); aat2870-core
 
  - Bug Fixes
    - Fix PCI IDs; intel-lpss-pci
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Merge tag 'mfd-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull mfd updates from Lee Jones:
 "New Drivers:
   - Add support for IQS620A/621/622/624/625 Azoteq IQS62X Sensors

  New Device Support:
   - Add support for ADC, IRQ, Regulator, RTC and WDT to Ricoh RN5T618 PMIC
   - Add support for Comet Lake to Intel LPSS

  New Functionality:
   - Add support for Charger Detection to Spreadtrum SC27xx PMICs
   - Add support for Interrupt Polarity to Dialog Semi DA9062/61 PMIC
   - Add ACPI enumeration support to Diolan DLN2 USB Adaptor

  Fix-ups:
   - Device Tree; iqs62x, rn5t618, cros_ec_dev, stm32-lptimer, rohm,bd71837, rohm,bd71847
   - I2C registration; rn5t618
   - Kconfig; MFD_CPCAP, AB8500_CORE, MFD_WM8994, MFD_WM97xx, MFD_STPMIC1
   - Use flexible-array members; omap-usb-tll, qcom-pm8xxx
   - Remove unnecessary casts; omap-usb-host, omap-usb-tll
   - Power (suspend/resume/poweroff) enhancements; rk808
   - Improve error/sanity checking; dln2
   - Use snprintf(); aat2870-core

  Bug Fixes:
   - Fix PCI IDs in intel-lpss-pci"

* tag 'mfd-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (33 commits)
  mfd: intel-lpss: Fix Intel Elkhart Lake LPSS I2C input clock
  mfd: aat2870: Use scnprintf() for avoiding potential buffer overflow
  mfd: dln2: Allow to be enumerated via ACPI
  mfd: da9062: Add support for interrupt polarity defined in device tree
  dt-bindings: bd718x7: Yamlify and add BD71850
  mfd: dln2: Fix sanity checking for endpoints
  mfd: intel-lpss: Add Intel Comet Lake PCH-V PCI IDs
  mfd: sc27xx: Add USB charger type detection support
  dt-bindings: mfd: Document STM32 low power timer bindings
  mfd: rk808: Convert RK805 to shutdown/suspend hooks
  mfd: rk808: Reduce shutdown duplication
  mfd: rk808: Stop using syscore ops
  mfd: rk808: Ensure suspend/resume hooks always work
  mfd: rk808: Always use poweroff when requested
  mfd: omap: Remove useless cast for driver.name
  mfd: Kconfig: Fix some misspelling of the word functionality
  mfd: pm8xxx: Replace zero-length array with flexible-array member
  mfd: omap-usb-tll: Replace zero-length array with flexible-array member
  mfd: cpcap: Fix compile if MFD_CORE is not selected
  mfd: cros_ec: Check DT node for usbpd-notify add
  ...
2020-04-07 19:48:52 -07:00
Lee Jones
873357b1a7 Merge branches 'ib-mfd-iio-input-5.7' and 'ib-mfd-iio-rtc-5.7' into ibs-for-mfd-merged 2020-03-30 07:34:14 +01:00
Andreas Kemnade
87a25333c8 iio: adc: rn5t618: Add ADC driver for RN5T618/RC5T619
Both chips have an A/D converter capable of measuring
things like VBAT, VUSB and analog inputs.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-27 09:42:37 +00:00
Jeff LaBundy
189c3c495a iio: position: Add support for Azoteq IQS624/625 angle sensors
This patch adds support for the Azoteq IQS624 and IQS625 angular position
sensors, capable of reporting the angle of a rotating shaft down to 1 and
10 degrees of accuracy, respectively.

This patch also introduces a home for linear and angular position sensors.
Unlike resolvers, they are typically contactless and use the Hall effect.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-27 08:25:59 +00:00
Jeff LaBundy
b081b73820 iio: light: Add support for Azoteq IQS621/622 ambient light sensors
This patch adds support for the Azoteq IQS621 and IQS622 ambient light
sensors, both of which can report a four-bit representation of ambient
light intensity.

The IQS621 can additionally report illuminace directly in units of lux,
while the IQS622 can report a four-bit representation of infrared light
intensity. Furthermore, the IQS622 can report a unitless measurement of
a target's proximity to the device.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-27 08:25:56 +00:00
Jeff LaBundy
8ba447109a iio: temperature: Add support for Azoteq IQS620AT temperature sensor
This patch adds support for the Azoteq IQS620AT temperature sensor,
capable of reporting its absolute die temperature.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-27 08:25:50 +00:00
Deepak R Varma
4230c86228 staging: iio: adc: ad7192: Re-indent enum labels
Re-indent enum labels as per coding style guidelines. Problem
detected by checkpatch script.

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Link: https://lore.kernel.org/r/5c6bef6462d135b748f58f8c2645c60234482f52.1584904896.git.mh12gx2825@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:43:42 +01:00
Greg Kroah-Hartman
6203da9803 Merge 5.6-rc7 into staging-next
We need the staging/iio fixes in here as well

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 08:01:20 +01:00
Greg Kroah-Hartman
14800df6a0 First set of IIO fixes in the 5.6 cycle.
* adxl372
   - Fix marking of buffered values as big endian.
 * ak8974
   - Fix wrong handling of negative values when read from sysfs.
 * at91-sama5d2
   - Fix differential mode by ensuring configuration set correctly.
 * ping
   - Use the write sensor type for of_ping_match table.
 * sps30
   - Kconfig build dependency fix.
 * st-sensors
   - Fix a wrong identification of which part the SMO8840 ACPI ID indicates.
 * stm32-dsfdm
   - Fix a sleep in atomic issue by not using a trigger when it makes no sense.
 * stm32-timer
   - Make sure master mode is disabled when stopping.
 * vcnl400
   - Update some sampling periods based on new docs.
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Merge tag 'iio-fixes-for-5.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes in the 5.6 cycle.

* adxl372
  - Fix marking of buffered values as big endian.
* ak8974
  - Fix wrong handling of negative values when read from sysfs.
* at91-sama5d2
  - Fix differential mode by ensuring configuration set correctly.
* ping
  - Use the write sensor type for of_ping_match table.
* sps30
  - Kconfig build dependency fix.
* st-sensors
  - Fix a wrong identification of which part the SMO8840 ACPI ID indicates.
* stm32-dsfdm
  - Fix a sleep in atomic issue by not using a trigger when it makes no sense.
* stm32-timer
  - Make sure master mode is disabled when stopping.
* vcnl400
  - Update some sampling periods based on new docs.

* tag 'iio-fixes-for-5.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: ping: set pa_laser_ping_cfg in of_ping_match
  iio: chemical: sps30: fix missing triggered buffer dependency
  iio: st_sensors: remap SMO8840 to LIS2DH12
  iio: light: vcnl4000: update sampling periods for vcnl4040
  iio: light: vcnl4000: update sampling periods for vcnl4200
  iio: accel: adxl372: Set iio_chan BE
  iio: magnetometer: ak8974: Fix negative raw values in sysfs
  iio: trigger: stm32-timer: disable master mode when stopping
  iio: adc: stm32-dfsdm: fix sleep in atomic context
  iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode
2020-03-18 11:20:42 +01:00
Alexandru Ardelean
fe297f8f04 iio: dac: Kconfig: sort symbols alphabetically
While adding a new device, I noticed these aren't sorted alphabetically [as
in the Makefile], which messed my head-up.
This change sorts the devices alphabetically in the drivers/iio/dac/Kconfig
file as well.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:54 +00:00
Alexandru Ardelean
a305b0c9ed iio: light: gp2ap020a00f: fix iio_triggered_buffer_{predisable,postenable} positions
The iio_triggered_buffer_{predisable,postenable} functions attach/detach
the poll functions.

For the predisable hook, the disable code should occur before detaching
the poll func, and for the postenable hook, the poll func should be
attached before the enable code.

This change moves the postenable/predisable hooks into the correct
positions.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:54 +00:00
Alexandru Ardelean
d7cf5f6047 iio: potentiostat: lmp9100: fix iio_triggered_buffer_{predisable,postenable} positions
The iio_triggered_buffer_{predisable,postenable} functions attach/detach
the poll functions.

For the predisable hook, the disable code should occur before detaching
the poll func, and for the postenable hook, the poll func should be
attached before the enable code.

The lmp9100 was attaching a poll function but never detaching it via any
IIO disable hook.

This change adds the detaching of the poll function, and moves/renames
lmp91000_buffer_preenable() function to lmp91000_buffer_postenable().
The idea is to make it more symmetrical, so that when the
iio_triggered_buffer_{predisable,postenable} functions get removed, it's
easier to see.

Fixes: 67e17300dc ("iio: potentiostat: add LMP91000 support")
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:53 +00:00
Fabrice Gasnier
736e19e684 iio: trigger: stm32-timer: add power management support
Add suspend/resume PM sleep ops to stm32-timer-trigger driver.
Register contents may be lost depending on low power modes.
When going to low power, enforce the timer isn't active. Gracefully
restore its state upon resume in case it's been left enabled prior to
suspend.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:53 +00:00
Fabrice Gasnier
e23aaafcdb iio: trigger: stm32-timer: rename enabled flag
"clk_enabled" flag reflects enabled state of the timer, for master mode,
slave mode or trigger (with sampling_frequency). So rename it to "enabled".

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:53 +00:00
Rohit Sarkar
5da06e6cd9 iio: add a TODO
This patch adds a TODO file with some work items added with reference to
the conversation in [1].
A TODO file is immensely useful while onboarding new contributors who
are looking for some low hanging fruit to get their foot into the door.
Since these items affect all drivers the file has been placed in the
root iio directory instead of augmenting the staging TODO.

Thanks,
Rohit

[1]: https://marc.info/?l=linux-iio&m=158256721009892&w=2
Signed-off-by: Rohit Sarkar <rohitsarkar5398@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:53 +00:00
William Breathitt Gray
de65d05563 counter: 104-quad-8: Support Filter Clock Prescaler
The ACCES 104-QUAD-8 series does active filtering on the quadrature
input signals via the PC/104 bus clock (OSC 14.318 MHz). This patch
exposes the filter clock prescaler available on each channel.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:52 +00:00
Jean-Baptiste Maneyrol
95c72b78c3 iio: pressure: icp10100: add driver for InvenSense ICP-101xx
InvenSense ICP-101xx sensors are a family of barometric pressure
and temperature sensor.

These devices are I2C only and use a specific protocol of
commands/responses. Data transfer is secured by using crc8.

Driver provides processed pressure and raw temperature data.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:52 +00:00
Alexandru Tachici
2ddc982a6c iio: industrialio-core: Fix debugfs read
Currently iio_debugfs_read_reg calls debugfs_reg_access
every time it is ran. Reading the same hardware register
multiple times during the same reading of a debugfs file
can cause unintended effects.

For example for each: cat iio:device0/direct_reg_access
the file_operations.read function will be called at least
twice. First will return the full length of the string in
bytes  and the second will return 0.

This patch makes iio_debugfs_read_reg to call debugfs_reg_access
only when the user's buffer position (*ppos) is 0. (meaning
it is the beginning of a new reading of the debugfs file).

Fixes: e553f182d5 ("staging: iio: core: Introduce debugfs support, add support for direct register access")
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:51 +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
Sergiu Cuciurean
ccea1f5acf iio: adc: ti-tlc4541: 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
Sergiu Cuciurean
eccd071836 iio: adc: mcp320x: 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
Sergiu Cuciurean
5f0ea0f5a6 iio: adc: max1118: 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 17:28:44 +00:00
Sergiu Cuciurean
e89602c32e iio: adc: ad9292: 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 17:28:44 +00:00
Marek Szyprowski
ba1b4c8e80 iio: adc: exynos: Silence warning about regulators during deferred probe
Don't confuse user with meaningless warning about the failure in getting
regulators in case of deferred probe.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:44 +00:00
Sergiu Cuciurean
cc74a38d85 iio: amplifiers: ad8366: add support for HMC1119 Attenuator
This change adds support for the HMC1119 Silicon Digial Attenuator. The
HMC1119 is a broadband, highly accurate, 7-bit digital attenuator,
operating from 0.1 GHz to 6.0 GHz with 31.5 dB attenuation control range
in 0.25 dB steps.

Link: https://www.analog.com/media/en/technical-documentation/data-sheets/hmc1119.pdf

Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:43 +00:00
Maxime Roussin-Bélanger
328b50e9a0 iio: si1133: read 24-bit signed integer for measurement
The chip is configured in 24 bit mode. The values read from
it must always be treated as is. This fixes the issue by
replacing the previous 16 bits value by a 24 bits buffer.

This changes affects the value output by previous version of
the driver, since the least significant byte was missing.
The upper half of 16 bit values previously output are now
the upper half of a 24 bit value.

Fixes: e01e7eaf37 ("iio: light: introduce si1133")

Reported-by: Simon Goyette <simon.goyette@gmail.com>
Co-authored-by: Guillaume Champagne <champagne.guillaume.c@gmail.com>
Signed-off-by: Maxime Roussin-Bélanger <maxime.roussinbelanger@gmail.com>
Signed-off-by: Guillaume Champagne <champagne.guillaume.c@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:42 +00:00
Alexandru Tachici
cbbb819837 iio: dac: ad5770r: Add AD5770R support
The AD5770R is a 6-channel, 14-bit resolution, low noise, programmable
current output digital-to-analog converter (DAC) for photonics control
applications.

It contains five 14-bit resolution current sourcing DAC channels and one
14-bit resolution current sourcing/sinking DAC channel.

Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:41 +00:00
Gregor Riepl
070bd30a51 iio: light: Simplify the current to lux LUT
The look-up-table for currens to lux is simply specifying
all currents from 5..47 mA, if we add some values for 0..5
we can just select the index for the lux value in an array
from the mA value. Use clamp() to get the value in the
range of values in the array.

Cc: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Gregor Riepl <onitake@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:41 +00:00
Matt Ranostay
a751b8e480 iio: chemical: atlas-sensor: add DO-SM module support
Atlas Scientific DO-SM OEM sensor reads disolved oxygen in
a solution. This is reported back as mg/L which maps directly
to ppm and so the IIO_CONCENTRATION channel type can be used.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:40 +00:00
Matt Ranostay
d4578dc051 iio: chemical: atlas-sensor: allow probe without interrupt line
Sensors don't actually need a interrupt line to give valid readings,
and can triggered with CONFIG_IIO_HRTIMER_TRIGGER as well. Remove
the required check for interrupt, and continue along in the probe
function.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:40 +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
Fabrice Gasnier
3192ade7b6 iio: trigger: stm32-timer: enable clock when in master mode
Clock should be enabled as soon as using master modes, even before
enabling timer. Or, this may provoke bad behavior on the other end
(slave timer). Then, introduce 'clk_enabled' flag, instead of relying
on CR1 EN bit, to keep track of clock being enabled (balanced refcount).
Propagate this anywhere else in the driver.

Also add 'remove' routine to stop timer and disable clock in case it
has been left enabled. Enforce the user interface has been unregistered
in the remove routine, before disabling the hardware to avoid possible
race. So, remove use of devm_ variant to register triggers and unregister
them before the hardware gets disabled [1].
[1] https://patchwork.kernel.org/patch/9956247/

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:35 +00:00
David Heidelberg
9c088c020d iio: light: al3320a allow module autoload and polish
- allow autoloading when build as module and defined inside DT

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:35 +00:00
David Heidelberg
3a271275fa iio: light: al3320a implement devm_add_action_or_reset
Use devm_add_action_or_reset to automatically disable the device
and allow you to get rid of the remove function entirely.

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:35 +00:00
David Heidelberg
c39a05e352 iio: light: al3320a implement suspend support
AL3320a is fairly simple chip, so for suspend is enough to disable and
later enable it again.

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:34 +00:00
David Heidelberg
c36b5195ab iio: light: add Dyna-Image AL3010 driver
Based on:
- 3320A in-kernel driver
- https://www.spinics.net/lists/linux-iio/msg25145.html
- https://lore.kernel.org/patchwork/patch/684179/

I decided to keep it aside of AL3320A due to different approach and much
simpler design of 3010.

Tested on Nexus 7 2012 (grouper/tilapia).

Tested-by: David Heidelberg <david@ixit.cz>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:34 +00:00
David Heidelberg
58d22a911d iio: light: al3320a slightly improve code formatting
- modified to be in part with al3010 driver
- cleanup using bitfield, no functionality change intended

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:34 +00:00
Alexandru Tachici
b581f748cc staging: iio: adc: ad7192: move out of staging
Move ad7192 ADC driver out of staging into mainline.

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-08 17:28:33 +00:00