Commit Graph

9 Commits

Author SHA1 Message Date
Al Viro
5f60d5f6bb move asm/unaligned.h to linux/unaligned.h
asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2024-10-02 17:23:23 -04:00
Dimitri Fedrau
9547d6a4c6 iio: humidity: hdc3020: fix hysteresis representation
According to the ABI docs hysteresis values are represented as offsets to
threshold values. Current implementation represents hysteresis values as
absolute values which is wrong. Nevertheless the device stores them as
absolute values and the datasheet refers to them as clear thresholds. Fix
the reading and writing of hysteresis values by including thresholds into
calculations. Hysteresis values that result in threshold clear values
that are out of limits will be truncated.

To check that the threshold clear values are correct, registers are read
out using i2ctransfer and the corresponding temperature and relative
humidity thresholds are calculated using the formulas in the datasheet.

Fixes: 3ad0e7e5f0 ("iio: humidity: hdc3020: add threshold events support")
Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240605192136.38146-1-dima.fedrau@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-09 11:05:03 +01:00
Javier Carrasco
e264b086f4 iio: humidity: hdc3020: add reset management
The HDC3020 provides an active low reset signal that must be handled if
connected. Asserting this signal turns the device into Trigger-on Demand
measurement mode, reducing its power consumption when no measurements
are required like in low-power modes.

According to the datasheet, the longest "Reset Ready" is 3 ms, which is
only taken into account if the reset signal is defined.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240303-hdc3020-pm-v3-3-48bc02b5241b@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-03-25 20:10:13 +00:00
Javier Carrasco
f764c293a1 iio: humidity: hdc3020: add power management
The HDC3020 sensor carries out periodic measurements during normal
operation, but as long as the power supply is enabled, it will carry on
in low-power modes. In order to avoid that and reduce power consumption,
the device can be switched to Trigger-on Demand mode, and if possible,
turn off its regulator.

According to the datasheet, the maximum "Power Up Ready" is 5 ms.

Add resume/suspend pm operations to manage measurement mode and
regulator state.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240303-hdc3020-pm-v3-1-48bc02b5241b@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-03-25 20:10:13 +00:00
Greg Kroah-Hartman
d4551c189d IIO: 1st set of new device support, features and cleanup for 6.9
IIO Backend support
 ===================
 
 New approach from Nuno Sa to the problem of reuse of drivers with
 IIO devices that are actually the combination of a highspeed chip
 and an FPGA core handling the data capture and flows. It will hopefully
 also apply to some other split designs. The ad9467 and axi-adi drivers
 are converted over to this framework.
 
 New device support
 ==================
 
 adi,admfm2000
 - New driver for this dual microwave down converter.
 ams,as73211
 - Add support for as7331 UV sensor.
 richtek,rtq6056
 - Add support for related parts RTQ6053 and RTQ6059
 st,lsm6dsx
 - Add ASM330LHHXG1 accelerometer and gyro support (mainly IDs)
 ti,ads1298
 - New driver for this medical ADC.
 
 Features
 ========
 
 tests
 - Unit tests for the gain-time-scale helper library.
 bosch,bmi088
 - I2C support.
 bosh,bmi160
 - Add 10EC5280 ACPI ID. Used in a number of devices that won't get fixed.
   The ID is actually a PCI ID belonging to realtech. No response was received
   to earlier attempts to notify them of this.
   The manufacturers of some devices have replied to say they will not fix
   this incorrect ID. Add the ID and hope it isn't a problem.
 bosch,bmi323
 - Add BOSC0200 ACPI ID. Note this is a duplicate of one in the bmc150
   driver (it appears these parts share a windows driver).
   Both drivers perform an ID check that is safe on the other part before
   successfully probing.
 hid-sensors-als
 - Add color temperature and chromaticity support. Note this is a replacement
   for the series reverted in 6.8 that correctly handles all the potential
   channel combinations.
 honeywell,hsc030pa
 - Triggered buffer support (after driver cleanup).
 honeywell,mprls00025pa
 - Improved error handling.
 - New DT binding to allow use of part number triplet as provided in data sheet
   to specify equivalent of most of the binding more efficiently.
 - SPI support.
 memsic,mxc4005
 - ACPI ID MDA6655 as seen in the Chuwi Minibook X 2023
 ti,hdc3020
 - Add threshold event support (after some driver cleanup)
 veml,vcnl4000
 - Switch to high resolution proximity measurement.
 
 Cleanup
 =======
 Various minor typo fixes and better use of defines etc.
 
 Treewide
 - Stop using ACPI_PTR(). The savings in space are small and not worth
   the complexity of __maybe_unused of ifdef guards.  To avoid use in
   new IIO drivers based on copy and paste, clean it out.
 - cleanup.h based handling of iio_device_claim_direct_mode()/
   iio_device_release_direct_mode() using scope_cond_guard().
   In many drivers this is combined with other automated cleanup
   to give maximum simplifications.
   An initial set of drivers are converted over to this infrastructure.
 
 Tools
 - Use rewinddir() instead of seekdir() to return to start of file.
 
 core
 - Make iio_bus_type constant.
 
 adi,ad16475
 - Use irq_get_trigger_type() instead of opencoding.
 adi,ad16480
 - Use irq_get_trigger_type() instead of opencoding.
 adi,ad-sigma-delta
 - Avoid overwriting IRQ flags if provided by firmware.
 ams,as73211
 - Use IIO_VAL_FRACTIONAL for scales to simplify the code and potentially
   improve accuracy.
 gts-library
 - Use a div64_u64() instead of a loop to do a division.
 honeywell,mprls00025pa
 - Clean up dt-binding doc.
 - Drop defaults when DT binding not providing values. Very unlikely
   these were useful given they were wrong for vast majority of supported
   devices.
 - Whitespace cleanup
 miramems,da280
 - Use i2c_get_match_data() to replace hand rolled ACPI matching code.
 semtech,sx9324
 - Avoid unnecessary copying of property strings.
 st,lsm6dsx
 - Improve docs, particularly wrt to making addition of new device
   support less noisy.
 st,lsm9ds0
 - Use dev_err_probe() in all probe() error handling.
 - Improved header includes.
 - Tidy up termination of ID tables.
 ti,ads1014
 - Correct upper bound on PGA (wrong value had no actual impact)
 ti,afe4403/4404
 - devm_ useage to simplify error handling in probe() and allow() remove to
   be dropped.
 voltage-divider
 - Add dt-binding for io-channel-cells to allow such a device to be both
   an IIO consumer and IIO producer at the same time.
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Merge tag 'iio-for-6.9a' of http://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: 1st set of new device support, features and cleanup for 6.9

IIO Backend support
===================

New approach from Nuno Sa to the problem of reuse of drivers with
IIO devices that are actually the combination of a highspeed chip
and an FPGA core handling the data capture and flows. It will hopefully
also apply to some other split designs. The ad9467 and axi-adi drivers
are converted over to this framework.

New device support
==================

adi,admfm2000
- New driver for this dual microwave down converter.
ams,as73211
- Add support for as7331 UV sensor.
richtek,rtq6056
- Add support for related parts RTQ6053 and RTQ6059
st,lsm6dsx
- Add ASM330LHHXG1 accelerometer and gyro support (mainly IDs)
ti,ads1298
- New driver for this medical ADC.

Features
========

tests
- Unit tests for the gain-time-scale helper library.
bosch,bmi088
- I2C support.
bosh,bmi160
- Add 10EC5280 ACPI ID. Used in a number of devices that won't get fixed.
  The ID is actually a PCI ID belonging to realtech. No response was received
  to earlier attempts to notify them of this.
  The manufacturers of some devices have replied to say they will not fix
  this incorrect ID. Add the ID and hope it isn't a problem.
bosch,bmi323
- Add BOSC0200 ACPI ID. Note this is a duplicate of one in the bmc150
  driver (it appears these parts share a windows driver).
  Both drivers perform an ID check that is safe on the other part before
  successfully probing.
hid-sensors-als
- Add color temperature and chromaticity support. Note this is a replacement
  for the series reverted in 6.8 that correctly handles all the potential
  channel combinations.
honeywell,hsc030pa
- Triggered buffer support (after driver cleanup).
honeywell,mprls00025pa
- Improved error handling.
- New DT binding to allow use of part number triplet as provided in data sheet
  to specify equivalent of most of the binding more efficiently.
- SPI support.
memsic,mxc4005
- ACPI ID MDA6655 as seen in the Chuwi Minibook X 2023
ti,hdc3020
- Add threshold event support (after some driver cleanup)
veml,vcnl4000
- Switch to high resolution proximity measurement.

Cleanup
=======
Various minor typo fixes and better use of defines etc.

Treewide
- Stop using ACPI_PTR(). The savings in space are small and not worth
  the complexity of __maybe_unused of ifdef guards.  To avoid use in
  new IIO drivers based on copy and paste, clean it out.
- cleanup.h based handling of iio_device_claim_direct_mode()/
  iio_device_release_direct_mode() using scope_cond_guard().
  In many drivers this is combined with other automated cleanup
  to give maximum simplifications.
  An initial set of drivers are converted over to this infrastructure.

Tools
- Use rewinddir() instead of seekdir() to return to start of file.

core
- Make iio_bus_type constant.

adi,ad16475
- Use irq_get_trigger_type() instead of opencoding.
adi,ad16480
- Use irq_get_trigger_type() instead of opencoding.
adi,ad-sigma-delta
- Avoid overwriting IRQ flags if provided by firmware.
ams,as73211
- Use IIO_VAL_FRACTIONAL for scales to simplify the code and potentially
  improve accuracy.
gts-library
- Use a div64_u64() instead of a loop to do a division.
honeywell,mprls00025pa
- Clean up dt-binding doc.
- Drop defaults when DT binding not providing values. Very unlikely
  these were useful given they were wrong for vast majority of supported
  devices.
- Whitespace cleanup
miramems,da280
- Use i2c_get_match_data() to replace hand rolled ACPI matching code.
semtech,sx9324
- Avoid unnecessary copying of property strings.
st,lsm6dsx
- Improve docs, particularly wrt to making addition of new device
  support less noisy.
st,lsm9ds0
- Use dev_err_probe() in all probe() error handling.
- Improved header includes.
- Tidy up termination of ID tables.
ti,ads1014
- Correct upper bound on PGA (wrong value had no actual impact)
ti,afe4403/4404
- devm_ useage to simplify error handling in probe() and allow() remove to
  be dropped.
voltage-divider
- Add dt-binding for io-channel-cells to allow such a device to be both
  an IIO consumer and IIO producer at the same time.

* tag 'iio-for-6.9a' of http://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (106 commits)
  iio: imu: bmi323: Add ACPI Match Table
  iio: accel: bmc150: Document duplicate ACPI entries with bmi323 driver
  iio: adc: ti-ads1298: Add driver
  dt-bindings: iio: adc: ti-ads1298: Add bindings
  iio: pressure: hsc030pa add triggered buffer
  iio: pressure: hsc030pa add mandatory delay
  iio: pressure: hsc030pa: update datasheet URLs
  iio: pressure: hsc030pa: include cleanup
  iio: pressure: hsc030pa: use signed type to hold div_64() result
  dt-bindings: iio: pressure: honeywell,hsc030pa.yaml add spi props
  iio: st_sensors: lsm9ds0: Use common style for terminator in ID tables
  iio: st_sensors: lsm9ds0: Don't use "proxy" headers
  iio: st_sensors: lsm9ds0: Use dev_err_probe() everywhere
  iio: adc: adi-axi-adc: move to backend framework
  iio: adc: ad9467: convert to backend framework
  iio: add the IIO backend framework
  iio: buffer-dmaengine: export buffer alloc and free functions
  of: property: add device link support for io-backends
  dt-bindings: adc: axi-adc: update bindings for backend framework
  dt-bindings: adc: ad9467: add new io-backend property
  ...
2024-02-25 14:11:41 +01:00
Dimitri Fedrau
3ad0e7e5f0 iio: humidity: hdc3020: add threshold events support
Add threshold events support for temperature and relative humidity. To
enable them the higher and lower threshold registers must be programmed
and the higher threshold must be greater then or equal to the lower
threshold. Otherwise the event is disabled. Invalid hysteresis values
are ignored by the device. There is no further configuration possible.

Tested by setting thresholds/hysteresis and turning the heater on/off.
Used iio_event_monitor in tools/iio to catch events while constantly
displaying temperature and humidity values.

Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Tested-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240214085350.19382-4-dima.fedrau@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-02-17 16:16:12 +00:00
Dimitri Fedrau
52882c6fb1 iio: humidity: hdc3020: switch to 16bit register defines
Switch to 16bit register defines and drop the const u8 register pairs.
By doing so we change the parameter of functions for reading and writing
to the device. Additionally create helper functions that are aware of the
new register format and apply them wherever possible.

Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Link: https://lore.kernel.org/r/20240214085350.19382-2-dima.fedrau@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-02-17 16:16:12 +00:00
Dimitri Fedrau
a69eeaad09 iio: humidity: hdc3020: fix temperature offset
The temperature offset should be negative according to the datasheet.
Adding a minus to the existing offset results in correct temperature
calculations.

Fixes: c9180b8e39 ("iio: humidity: Add driver for ti HDC302x humidity sensors")
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Link: https://lore.kernel.org/r/20240126135226.3977904-1-dima.fedrau@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-01-27 14:40:07 +00:00
Li peiyu
c9180b8e39 iio: humidity: Add driver for ti HDC302x humidity sensors
Add support for HDC302x integrated capacitive based relative
humidity (RH) and temperature sensor.
This driver supports reading values, reading the maximum and
minimum of values and controlling the integrated heater of
the sensor.

Co-developed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Li peiyu <579lpy@gmail.com>
Link: https://lore.kernel.org/r/20231211122940.9791-1-579lpy@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2023-12-11 19:38:36 +00:00