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Author SHA1 Message Date
Greg Kroah-Hartman
258ad62593 IIO new device support, features, cleanup for 7.3 
Includes a merge of 7.2-rc2 to pick up the changes around
 mod_devicetable.h and reduce resulting conflicts around includes.
 
 New device support
 ------------------
 
 adi,ad3530R
 - Add support for the AD3532R and AD3532 16 channel DACs.
 adi,ad4080
 - Add support for the AD4883 ADC.
 adi,ad5686
 - Add support for AD5313R, AD5317R, AD5674, AD5687R, AD5689, AD5689R DACs
   over SPI
 - Add support for AD5316R, AD5674, AD5697R and AD5696 DACs over I2C
 - Significant driver refactoring prior to these additions, partly to reduce
   bus traffic and to add triggered buffer and gain control support. An
   earlier set added support for missing supplies, reset and LDAC GPIO.
 adi,adf41513
 - New driver to support this PLL frequency synthesizer that runs up to
   26.5 GHz.
 - Included infrastructure to handle higher precision attributes with
   extensive tests
 adi,ltc2378-20
 - New driver supporting LTC2338, LTC2364, LTC2367, LTC2368, LT2369, LTC2370
   LTC2376, LTC2377, LTC2378, LTC2379 and LTC23980 ADCs with both high speed
   capture via appropriate backend and conventional triggered buffer SPI
   capture.
 invensense,icm42607
 - New driver for this IMU.
 mediateck,mt6323
 - New driver for this PMIC ADC.
 microchip,mcp47a1
 - New driver for this I2C 6 bit DAC.
 nxp,mcf54415-dac
 - New driver for this DAC found in NXP SoCs.
 qst,qmc5884l
 - New driver for this 3 axis magnetometer. Included dt vendor entry for qst.
 qst,qmc6308
 - New driver for this 3 axis magnetometer.
 sensiron,slf3s
 - New driver for this liquid flow sensor. Includes adding IIO_VOLUMEFLOW
   channel type.
 st,vl53l1x
 - Refactors to improve readability.
 ti,ads112c14
 - New driver supporting the ADS112C14 and ADS122C14 ADCs. These bring
   some new ABI for input chopping, particular useful for resistive sensors
   like thermocouples or Wheatstone bridges.
 - Support CRC8 detection of corruption on the bus.
 - Support buffered reads.
 ti,tmp117
 - (trivial) Add support for the tmp119 temperature sensor.
 xilinx,versal-sysmon
 - New ADC driver for this block found on various FPGAs including various
   bus interfaces, threshold and oversampling support.
 
 dt binding updates
 ------------------
 new shared bindings
 - excitation-channels and excitation-current-nanoamp allow per channel
   specification of currents used for resistive sensor measurement.
 - reference-sources property to allow selection of a per channel reference.
 rockchip,saradc
 - Add RV1106 which is compatible with the RV3588.
 
 Features
 --------
 
 buffer-dmaengine
 - Allow cyclic buffers, useful for repeating sequence generation with DACs.
 devantech,dmard09
 - Implement read back of channel scale - previously interface always
   returned an error.
 hid,sensors-als
 - Enable separate channel scaling for hardware that supports it.
 invensense,timestamp library
 - Various precision improvements.
 invensense,icm42600
 - Add support for hwfifo watermark interfaces.
 taos,tcs3472
 - Support wait time and sampling frequency control.
 
 Cleanups, minor fixes
 ---------------------
 
 Minor cleanups not mentioned at all in this summary such
 as white space fixes or typos.
 
 Affecting various drivers
 - Cleanup of conditionals that had no affect.
 - Drop some runtime pm local wrappers as now runtime_pm does the
   mark_last_busy part inside the put, these provide no useful code
   deduplication or readability advantages over directly calling the
   runtime_pm functions.
 - Return 0 from write_raw() on success.
 - Use of dev_err_probe() to simplify code and sometimes provide useful
   info for deferred probe debugging.
 - Drop some redundant error prints where the called function already
   provides information on errors.
 - Make some read only arrays in functions static.
 - Fix up missing handling of regcache_sync() errors.
 - Drop some false kernel-doc markings.
 - Add missing MODULE_DEVICE_TABLE for some of_match_id tables.
 - Use local variables for things like the struct device to shorten and
   improve readability of code.
 - Drop some unused structure elements.
 - Reorder dds.h macro parameters to be inline with others.
 - Header reorders and IWYU. Often part of a more significant series.
 - Remove abstractions designed to allow a driver to support multiple device
   types, when they have been around a long time and only the original part
   showed up.
 - Initialize spi_device_id arrays using member names following dropping of
   driver data from drivers that didn't actually use it.
 - Catch up with i2c_device_id tables added since previous effort to use
   named initializers for all those.
 - Use kernel types in a few places instead of standard C ones or bare
   unsigned.
 
 Misc
 - Update Xilinx AMS maintainer.
 - Update email address for Maxwell Doose.
 - Update email address for Siratul Islam.
 - Update email address for Tomasz Duszynski and re-add Tomasz to
   various maintainer entries.
 Docs
 - Encourage use of differential channel naming even when there is no
   flexibility in input to differential pair mapping. Intended to
   provide a strong signal to userspace that a channel is differential.
 adi,ad_sigma_delta
 - Allow COMPILE_TEST without any users.
 adi,ad2s1201
 - Refactor trigger handler to avoid mix of guard() and goto.
 adi,ad5686
 - Avoid potential NULL dereference is user forces a driver bind.
 adi,ad5696
 - Add a couple of missing entries to the of_match_id table and update
   binding to match.
 atmel,ad91_adc
 - Use const char * for DT string property allowing a cast to be dropped.
 avia,hx711
 - Various refactors and cleanup to enable support of additional parts
   (to come)
 - Add missing supply and gpio dt-bindings.
 bosch,bmc150
 - Harden against device reporting too large a FIFO sample count.
 - Use FIELD_PREP() / FIELD_GET() to improve readability.
 freescale,fxls8962af
 - Harden against device reporting too large a FIFO sample count.
 hid-sensors-*
 - Reorder probe to not expose userspace interfaces until the rest of
   the setup is done to avoid potentially dropping data.
 honeywell,abp2030pa
 - Drop an unreachable return.
 invensens,icm45600
 - Harden against bad value of FIFO sample count from device.
 - Use i2c_match_data if firmware table sourced match data isn't available.
 nxp,mpl1115
 - Ensure runtime_pm is balanced on error in probe.
 rohm,bm1390
 - Make the driver slightly more likely to recover from transient errors.
 sensiron,sgp30
 - Handle thread creation errors.
 st,lsm6dsx
 - Update the enable mask when doing sensor fusion to avoid incorrect fifo
   data handling.
 st,stm32-dfsdm
 - Treat dt flags as booleans.
 ti,ads1015
 - Switch to devm helpers which simplified code and closed a resource leak.
 ti,opt3001
 - Split complicated opt3001_get_processed() logic into irq an no irq
   helper functions.
 - Use devm to simplify code.
 - Use guard() to simplify code.
 - Reorder probe so final call exposes userspace interfaces.
 - Various other more minor cleanup
 taos,tsl2772
 - Fix calibscale readback to check right channel type.
 taos,tsl2583
 - Use sysfs_emit() and sysfs_emit_at() to replace open coded equivalents.
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Merge tag 'iio-for-7.3a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO new device support, features, cleanup for 7.3

Includes a merge of 7.2-rc2 to pick up the changes around
mod_devicetable.h and reduce resulting conflicts around includes.

New device support
------------------

adi,ad3530R
- Add support for the AD3532R and AD3532 16 channel DACs.
adi,ad4080
- Add support for the AD4883 ADC.
adi,ad5686
- Add support for AD5313R, AD5317R, AD5674, AD5687R, AD5689, AD5689R DACs
  over SPI
- Add support for AD5316R, AD5674, AD5697R and AD5696 DACs over I2C
- Significant driver refactoring prior to these additions, partly to reduce
  bus traffic and to add triggered buffer and gain control support. An
  earlier set added support for missing supplies, reset and LDAC GPIO.
adi,adf41513
- New driver to support this PLL frequency synthesizer that runs up to
  26.5 GHz.
- Included infrastructure to handle higher precision attributes with
  extensive tests
adi,ltc2378-20
- New driver supporting LTC2338, LTC2364, LTC2367, LTC2368, LT2369, LTC2370
  LTC2376, LTC2377, LTC2378, LTC2379 and LTC23980 ADCs with both high speed
  capture via appropriate backend and conventional triggered buffer SPI
  capture.
invensense,icm42607
- New driver for this IMU.
mediateck,mt6323
- New driver for this PMIC ADC.
microchip,mcp47a1
- New driver for this I2C 6 bit DAC.
nxp,mcf54415-dac
- New driver for this DAC found in NXP SoCs.
qst,qmc5884l
- New driver for this 3 axis magnetometer. Included dt vendor entry for qst.
qst,qmc6308
- New driver for this 3 axis magnetometer.
sensiron,slf3s
- New driver for this liquid flow sensor. Includes adding IIO_VOLUMEFLOW
  channel type.
st,vl53l1x
- Refactors to improve readability.
ti,ads112c14
- New driver supporting the ADS112C14 and ADS122C14 ADCs. These bring
  some new ABI for input chopping, particular useful for resistive sensors
  like thermocouples or Wheatstone bridges.
- Support CRC8 detection of corruption on the bus.
- Support buffered reads.
ti,tmp117
- (trivial) Add support for the tmp119 temperature sensor.
xilinx,versal-sysmon
- New ADC driver for this block found on various FPGAs including various
  bus interfaces, threshold and oversampling support.

dt binding updates
------------------
new shared bindings
- excitation-channels and excitation-current-nanoamp allow per channel
  specification of currents used for resistive sensor measurement.
- reference-sources property to allow selection of a per channel reference.
rockchip,saradc
- Add RV1106 which is compatible with the RV3588.

Features
--------

buffer-dmaengine
- Allow cyclic buffers, useful for repeating sequence generation with DACs.
devantech,dmard09
- Implement read back of channel scale - previously interface always
  returned an error.
hid,sensors-als
- Enable separate channel scaling for hardware that supports it.
invensense,timestamp library
- Various precision improvements.
invensense,icm42600
- Add support for hwfifo watermark interfaces.
taos,tcs3472
- Support wait time and sampling frequency control.

Cleanups, minor fixes
---------------------

Minor cleanups not mentioned at all in this summary such
as white space fixes or typos.

Affecting various drivers
- Cleanup of conditionals that had no affect.
- Drop some runtime pm local wrappers as now runtime_pm does the
  mark_last_busy part inside the put, these provide no useful code
  deduplication or readability advantages over directly calling the
  runtime_pm functions.
- Return 0 from write_raw() on success.
- Use of dev_err_probe() to simplify code and sometimes provide useful
  info for deferred probe debugging.
- Drop some redundant error prints where the called function already
  provides information on errors.
- Make some read only arrays in functions static.
- Fix up missing handling of regcache_sync() errors.
- Drop some false kernel-doc markings.
- Add missing MODULE_DEVICE_TABLE for some of_match_id tables.
- Use local variables for things like the struct device to shorten and
  improve readability of code.
- Drop some unused structure elements.
- Reorder dds.h macro parameters to be inline with others.
- Header reorders and IWYU. Often part of a more significant series.
- Remove abstractions designed to allow a driver to support multiple device
  types, when they have been around a long time and only the original part
  showed up.
- Initialize spi_device_id arrays using member names following dropping of
  driver data from drivers that didn't actually use it.
- Catch up with i2c_device_id tables added since previous effort to use
  named initializers for all those.
- Use kernel types in a few places instead of standard C ones or bare
  unsigned.

Misc
- Update Xilinx AMS maintainer.
- Update email address for Maxwell Doose.
- Update email address for Siratul Islam.
- Update email address for Tomasz Duszynski and re-add Tomasz to
  various maintainer entries.
Docs
- Encourage use of differential channel naming even when there is no
  flexibility in input to differential pair mapping. Intended to
  provide a strong signal to userspace that a channel is differential.
adi,ad_sigma_delta
- Allow COMPILE_TEST without any users.
adi,ad2s1201
- Refactor trigger handler to avoid mix of guard() and goto.
adi,ad5686
- Avoid potential NULL dereference is user forces a driver bind.
adi,ad5696
- Add a couple of missing entries to the of_match_id table and update
  binding to match.
atmel,ad91_adc
- Use const char * for DT string property allowing a cast to be dropped.
avia,hx711
- Various refactors and cleanup to enable support of additional parts
  (to come)
- Add missing supply and gpio dt-bindings.
bosch,bmc150
- Harden against device reporting too large a FIFO sample count.
- Use FIELD_PREP() / FIELD_GET() to improve readability.
freescale,fxls8962af
- Harden against device reporting too large a FIFO sample count.
hid-sensors-*
- Reorder probe to not expose userspace interfaces until the rest of
  the setup is done to avoid potentially dropping data.
honeywell,abp2030pa
- Drop an unreachable return.
invensens,icm45600
- Harden against bad value of FIFO sample count from device.
- Use i2c_match_data if firmware table sourced match data isn't available.
nxp,mpl1115
- Ensure runtime_pm is balanced on error in probe.
rohm,bm1390
- Make the driver slightly more likely to recover from transient errors.
sensiron,sgp30
- Handle thread creation errors.
st,lsm6dsx
- Update the enable mask when doing sensor fusion to avoid incorrect fifo
  data handling.
st,stm32-dfsdm
- Treat dt flags as booleans.
ti,ads1015
- Switch to devm helpers which simplified code and closed a resource leak.
ti,opt3001
- Split complicated opt3001_get_processed() logic into irq an no irq
  helper functions.
- Use devm to simplify code.
- Use guard() to simplify code.
- Reorder probe so final call exposes userspace interfaces.
- Various other more minor cleanup
taos,tsl2772
- Fix calibscale readback to check right channel type.
taos,tsl2583
- Use sysfs_emit() and sysfs_emit_at() to replace open coded equivalents.

* tag 'iio-for-7.3a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (232 commits)
  iio: dac: mcp47a1: add support for new device
  dt-bindings: iio: dac: add support for mcp47a1
  iio: Update email for Maxwell Doose
  iio: imu: st_lsm6dsx: Update enable mask when using sensor fusion
  iio: light: cm32181: return zero after writing calibscale
  iio: flow: add Sensirion SLF3S liquid flow sensor driver
  iio: core: add IIO_VAL_DECIMAL64_FEMTO format type
  dt-bindings: iio: flow: add Sensirion SLF3S liquid flow sensor
  iio: types: add IIO_VOLUMEFLOW channel type
  iio: ABI: Encourage differential voltage ABI usage
  iio: adc: ltc2378: Add support for LTC2338-18
  iio: adc: ltc2378: Enable triggered buffer data capture
  iio: adc: ltc2378: Enable high-speed data capture
  iio: adc: ltc2378: Add support for LTC2378-20 and similar ADCs
  dt-bindings: iio: adc: Add ltc2378
  iio: magnetometer: ak8974: remove conditional return with no effect
  iio: light: tsl2583: remove conditional return with no effect
  iio: adc: rcar-gyroadc: remove rcar_gyroadc_set_power() helper
  iio: light: vcnl4000: remove vcnl4000_set_pm_runtime_state() helper
  iio: light: vcnl4035: remove vcnl4035_set_pm_runtime_state() helper
  ...
 2026-08-19 09:45:01 +02:00
Greg Kroah-Hartman
05fa77078b IIO: 2nd set of fixes for the 7.2 cycle. 
Given timing these are probably now merge window material.
 
 Usual mixed bunch of ancient issues and newer ones.
 
 core,buffer
 - Fix a potential UAF in release on anonymous buffers.
 - Make sure DMA fence lock lifetime matches that of the DMA fence.
 - Make IIO DMA fence release RCU safe.
 various
 - Kconfig missing REGMAP* related selects.
 - Unbalance of runtime pm or regulators in error paths.
 
 adi,ad3552r-hs
 - Fixing wrong buffers size for string printing.
 adi,ad4080
 - Fix 16-bit part support by adding path to tell the backend what
   the data size is - avoiding corrupted data capture.
 adi,ad5446
 - Wrong MODULE_DEVICE_TABLE() type due to case error.
 atlas,sensor
 - Drop use of irq_work() in favour of iio_trigger_poll_nested() avoiding
   a possible UAF.
 hid-temperature
 - Potential release ordering issue due to mixed devm and not that
   can lead to long timeouts.
 infineon,dps310
 - Fix NULL dereference on ACPI platforms.
 invense,mpu3050
 - Fix sign of raw angular velocity readings.
 mitsubishi,m62332
 - Fix a regulator reference counting issue when switching channels.
 sharp,gp2ap002
 - Unbalanced runtime PM on repeated event writes.
 - Reenable irq if runtime suspend fails.
 ti,ads7138
 - Disable statistics gathering whilst reading conversions results
   to avoid data corruption.
 ti,opt4001
 - Ensure integration times with integer part are rejected rather than
   ignoring the integer part of the value.
 - Fix use of wrong register.
 - Pointer type mismatch to div_u64_rem()
 - Fix reversed GENMASK() arguements.
 ti,opt4060
 - Ensure integration times with integer part are rejected rather than
   ignoring the integer part of the value.
 - Pointer type mismatch to div_u64_rem()
 - Wrong register name in an error print.
 ti,pac1921
 - Fix wrong channel used in the trigger handler for some combinations
   of enabled channels.
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Merge tag 'iio-fixes-for-7.2b-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: 2nd set of fixes for the 7.2 cycle.

Given timing these are probably now merge window material.

Usual mixed bunch of ancient issues and newer ones.

core,buffer
- Fix a potential UAF in release on anonymous buffers.
- Make sure DMA fence lock lifetime matches that of the DMA fence.
- Make IIO DMA fence release RCU safe.
various
- Kconfig missing REGMAP* related selects.
- Unbalance of runtime pm or regulators in error paths.

adi,ad3552r-hs
- Fixing wrong buffers size for string printing.
adi,ad4080
- Fix 16-bit part support by adding path to tell the backend what
  the data size is - avoiding corrupted data capture.
adi,ad5446
- Wrong MODULE_DEVICE_TABLE() type due to case error.
atlas,sensor
- Drop use of irq_work() in favour of iio_trigger_poll_nested() avoiding
  a possible UAF.
hid-temperature
- Potential release ordering issue due to mixed devm and not that
  can lead to long timeouts.
infineon,dps310
- Fix NULL dereference on ACPI platforms.
invense,mpu3050
- Fix sign of raw angular velocity readings.
mitsubishi,m62332
- Fix a regulator reference counting issue when switching channels.
sharp,gp2ap002
- Unbalanced runtime PM on repeated event writes.
- Reenable irq if runtime suspend fails.
ti,ads7138
- Disable statistics gathering whilst reading conversions results
  to avoid data corruption.
ti,opt4001
- Ensure integration times with integer part are rejected rather than
  ignoring the integer part of the value.
- Fix use of wrong register.
- Pointer type mismatch to div_u64_rem()
- Fix reversed GENMASK() arguements.
ti,opt4060
- Ensure integration times with integer part are rejected rather than
  ignoring the integer part of the value.
- Pointer type mismatch to div_u64_rem()
- Wrong register name in an error print.
ti,pac1921
- Fix wrong channel used in the trigger handler for some combinations
  of enabled channels.

* tag 'iio-fixes-for-7.2b-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (31 commits)
  iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
  iio: adc: pac1921: fix wrong channel used in trigger handler read
  iio: light: gp2ap002: re-enable irq if runtime suspend fails
  iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
  iio: light: apds9306: fix PM reference leak in apds9306_read_data()
  iio: gyro: mpu3050: fix sign of raw angular velocity readings
  iio: srf04: fix pm_runtime handling on probe error path
  iio: adc: ad4080: configure backend data size
  iio: adc: adi-axi-adc: add data size support for AD408X backend
  iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
  iio: dac: ad5446: fix OF module device table
  iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
  iio: light: opt4001: Reject integration times with a non-zero seconds part
  iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
  iio: light: opt4001: Fix power down clearing bits of the wrong register
  iio: light: opt4060: Fix incorrect register name in threshold read error message
  iio: light: opt4060: Fix pointer type passed to div_u64_rem()
  iio: light: opt4060: Reject integration times with a non-zero seconds part
  iio: light: ltrf216a: fix runtime PM reference leak in error path
  iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
  ...
 2026-08-19 09:43:39 +02:00
Fan Wu
be61c8c625 iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF 
The atlas driver requests its hardware data-ready IRQ with
devm_request_threaded_irq(); its threaded handler queues an irq_work,
atlas_work_handler(), that calls iio_trigger_poll(data->trig).

The IRQ is devm-managed, so free_irq() runs from the devres unwind after
atlas_remove() returns without flushing that irq_work.  Once a buffer is
enabled, conversion-complete IRQs keep firing and queueing it; a pending
irq_work can therefore run after the unwind has freed atlas_data/indio_dev
and the trigger, when atlas_work_handler() derives the atlas_data pointer
via container_of() and dereferences data->trig, a use-after-free.

Call iio_trigger_poll_nested() directly from the threaded handler instead
of bouncing through irq_work.  free_irq() then drains the threaded handler,
closing the window; other iio drivers with a threaded data-ready IRQ do the
same (e.g. bmi270).

This issue was found by an in-house static analysis tool.

Fixes: 7103b99b03 ("iio: chemical: atlas-ph-sensor: reorg driver to allow multiple chips")
Cc: stable@vger.kernel.org # v6.4+
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
 2026-08-07 23:51:05 +01:00
Moksh Panicker
bcd3f72e26 iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable 
atlas_buffer_postenable() acquires a runtime PM reference with
pm_runtime_resume_and_get() but returns the result of
atlas_set_interrupt() directly. If atlas_set_interrupt() fails,
the runtime PM reference is leaked and the device can never
autosuspend.

Add pm_runtime_put_autosuspend() on the error path to balance
the reference.

Fixes: 0e4f336f50 ("iio: chemical: atlas-sensor: Balance runtime pm + pm_runtime_resume_and_get()")
Cc: stable@vger.kernel.org
Signed-off-by: Moksh Panicker <mokshpanicker.7@gmail.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
 2026-08-07 23:51:04 +01:00
Vojtěch Krátký
15792e4956 iio: chemical: bme680: Use dev_err_probe() 
Used dev_err_probe() instead of dev_err() to simplify error handling.

Signed-off-by: Vojtěch Krátký <vo.kratky@seznam.cz>
Reviewed-by: Siratul Islam <siratul.islam@linux.dev>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
 2026-07-27 22:13:08 +01:00
Pan Chuang
8fe69fa2e4 iio: chemical: Remove redundant dev_err()/dev_err_probe() 
Since commit
55b48e23f5 ("genirq/devres: Add error handling in devm_request_*_irq()"),
devm_request_irq() and devm_request_threaded_irq() automatically log
detailed error messages on failure. Remove the now-redundant
driver-specific dev_err() and dev_err_probe() calls.

Signed-off-by: Pan Chuang <panchuang@vivo.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Gustavo Silva <gustavograzs@gmail.com> # for ens160
Reviewed-by: Maxwell Doose <maxwell@maxwelld.cc>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
 2026-07-27 22:13:07 +01:00
Linmao Li
1135d6875d iio: chemical: sgp30: Handle IAQ thread creation failure 
kthread_run() can fail and return an error pointer, but sgp_probe() stores
it and returns success, so the device is registered without its IAQ thread
and sgp_remove() later passes the error pointer to kthread_stop(). Return
the error from probe instead.

Fixes: ce51412416 ("iio: chemical: sgp30: Support Sensirion SGP30/SGPC3 sensors")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
 2026-07-26 19:19:36 +01:00
Jonathan Cameron
0932390705 Linux 7.2-rc2 
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Merge tag 'v7.2-rc2' into togreg

Linux 7.2-rc2

Done to resolve conflicts with header reorg around mod_devicetable.h
and provide a base for other inflight series that touch the includes.
 2026-07-06 16:59:47 +01:00
Tomasz Duszynski
023a6a1f09 iio: chemical: scd30: update email for Tomasz Duszynski 
The old email has been inactive for a while. Replace all occurrences
with the current address.

While at it, add myself to MAINTAINERS file as relevant driver files
still hold my address.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Maxwell Doose <m32285159@gmail.com>
Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-07-03 19:42:46 +01:00
Tomasz Duszynski
24659af699 iio: chemical: sps30: update email for Tomasz Duszynski 
The old email has been inactive for a while. Replace all occurrences
with the current address.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Maxwell Doose <m32285159@gmail.com>
Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-07-03 19:42:46 +01:00
Uwe Kleine-König (The Capable Hub)
995832b2ce Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files) 
Replace the #include of <linux/mod_devicetable.h> by the more specific
<linux/device-id/*.h> where applicable. For most cases the include
can be dropped completely, only a few drivers need one or two headers
added.

Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
 2026-07-03 07:38:17 +02:00
Uwe Kleine-König (The Capable Hub)
0a20c840d6 iio: Initialize spi_device_id arrays using member names 
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.

The mentioned robustness is relevant for a planned change to struct
spi_device_id that replaces .driver_data by an anonymous union.

This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Acked-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-30 00:15:56 +01:00
Uwe Kleine-König (The Capable Hub)
d7ed041207 iio: Drop unused assignment of spi_device_id driver data 
The drivers explicitly set the .driver_data member of struct
spi_device_id to zero without relying on that value. Drop these unused
assignments.

While touching these arrays unify spacing and use named initializers for
.name.

This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-30 00:15:56 +01:00
Maxwell Doose
8c740dd4fe iio: chemical: scd30: Use devm_mutex_init() over non-devm mutex_init() 
The current code uses mutex_init() instead of devm_mutex_init(), which
is incorrect as the rest of the file uses the devm automatic resource
management API. Fix this so that the mutex is set up in the same way as
the rest of the device data structure.

Signed-off-by: Maxwell Doose <m32285159@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-29 19:05:38 +01:00
Greg Kroah-Hartman
b232fc005a IIO: 2nd set of fixes for the 7.1 cycle. 
Usual mixed bag of ancient issues and the recently introduced.
 
 Various drivers
 - Ensure use of simple_write_to_buffer() in debugfs callbacks doesn't
   result in reading off   the end of intended data by checking the
   position is always 0.
 buffer/hw-consumer
 - Ensure scan_mask is freed on buffer release.
 acpi-als
 - Check ACPI_COMPANION() against NULL to close corner case where a
   driver is overridden.
 adi,ad4062
 - Add GPIOLIB dependency to avoid undefined ref to gpiochip_get_data()
 adi.ad7768-1
 - Add GPIOLIB dependency to avoid several undefined functions.
 adi,ad2s1210
 - Ensure possible recovery path if a read fails in the interrupt handler.
 bosch,bmg160
 - Increase sleep on startup to ensure device is ready.
 bosch,bmp280
 - Ensure buffer pushed to kfifo is zeroed to avoid leaking uninitialized
   stack data to userspace.
 dyna-image,al3010
 - Fix refactor that stopped reading one of the two measurement registers.
 dyna-image,al3320a
 - Fix refactor that stopped reading one of the two measurement registers.
 qcom,spmi-iadc
 - Ensure disable_irq_wake() is called on remove path.
 sensiron,scd30
 - Fix a sign extension bug.
 st,vl5310x
 - Ensure possible recovery path if a read fails in the interrupt handler.
 ti,adc1298
 - Bounds check for pga_settings index. Hardening against device returning
   unexpected values.
 ti,tmp006
 - Ensure trigger correctly released on remove path.
 vishay,veml6030
 - Fix incorrect channel type in events.
 vishay,veml6074
 - Bounds check for veml6075_it_ms. Hardening against device returning
   unexpected values.
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Merge tag 'iio-fixes-for-7.1b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

IIO: 2nd set of fixes for the 7.1 cycle.

Usual mixed bag of ancient issues and the recently introduced.

Various drivers
- Ensure use of simple_write_to_buffer() in debugfs callbacks doesn't
  result in reading off   the end of intended data by checking the
  position is always 0.
buffer/hw-consumer
- Ensure scan_mask is freed on buffer release.
acpi-als
- Check ACPI_COMPANION() against NULL to close corner case where a
  driver is overridden.
adi,ad4062
- Add GPIOLIB dependency to avoid undefined ref to gpiochip_get_data()
adi.ad7768-1
- Add GPIOLIB dependency to avoid several undefined functions.
adi,ad2s1210
- Ensure possible recovery path if a read fails in the interrupt handler.
bosch,bmg160
- Increase sleep on startup to ensure device is ready.
bosch,bmp280
- Ensure buffer pushed to kfifo is zeroed to avoid leaking uninitialized
  stack data to userspace.
dyna-image,al3010
- Fix refactor that stopped reading one of the two measurement registers.
dyna-image,al3320a
- Fix refactor that stopped reading one of the two measurement registers.
qcom,spmi-iadc
- Ensure disable_irq_wake() is called on remove path.
sensiron,scd30
- Fix a sign extension bug.
st,vl5310x
- Ensure possible recovery path if a read fails in the interrupt handler.
ti,adc1298
- Bounds check for pga_settings index. Hardening against device returning
  unexpected values.
ti,tmp006
- Ensure trigger correctly released on remove path.
vishay,veml6030
- Fix incorrect channel type in events.
vishay,veml6074
- Bounds check for veml6075_it_ms. Hardening against device returning
  unexpected values.

* tag 'iio-fixes-for-7.1b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (23 commits)
  iio: adc: ad_sigma_delta: fix clear_pending_event for registerless devices
  iio: adc: ad_sigma_delta: fix CS held asserted and state leaks
  iio: light: opt3001: fix missing state reset on timeout
  iio: chemical: scd30: Cleanup initializations and fix sign-extension bug
  iio: core: fix uninitialized data in debugfs
  iio: backend: fix uninitialized data in debugfs
  iio: dac: ad3552r-hs: fix uninitialized data ni ad3552r_hs_write_data_source()
  iio: adc: qcom-spmi-iadc: balance enable_irq_wake() on driver unbind
  iio: light: al3320a: read both ALS ADC registers again
  iio: light: al3010: read both ALS ADC registers again
  iio: temperature: tmp006: use devm_iio_trigger_register
  iio: buffer: hw-consumer: free scan_mask on buffer release
  iio: adc: ad7768-1: Select GPIOLIB
  iio: light: veml6030: fix channel type when pushing events
  iio: light: acpi-als: Check ACPI_COMPANION() against NULL
  iio: resolver: ad2s1210: notify trigger and clear state on fault read error
  iio: proximity: vl53l0x: notify trigger and clear IRQ on error paths
  iio: gyro: bmg160: wait full startup time after mode change at probe
  iio: gyro: bmg160: bail out when bandwidth/filter is not in table
  iio: pressure: bmp280: zero-init bmp580 trigger handler buffer
  ...
 2026-06-14 07:56:59 +02:00
Maxwell Doose
eb60a24b35 iio: chemical: scd30: Replace manual locking with RAII locking 
scd30_core.c currently uses manual mutex_lock() and mutex_unlock()
calls. Replace them with the newer guard(mutex)() for cleaner RAII
patterns and to improve maintainability.

Add new helper function scd30_trigger_handler_helper() containing
the critical section for scd30_trigger_handler().

In addition, small refactor to replace "?:" operator with regular
if/else returns.

Signed-off-by: Maxwell Doose <m32285159@gmail.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-03 14:54:08 +01:00
Jonathan Cameron
c82228f76a Linux 7.1-rc6 
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Merge tag 'v7.1-rc6' into work

Linux 7.1-rc6
 2026-06-02 15:24:19 +01:00
Maxwell Doose
d2b3d461a0 iio: chemical: sps30: Replace manual locking with RAII locking 
Replace manual mutex_lock() and mutex_unlock() calls with the much newer
guard(mutex)() macro to enable RAII patterns, modernize the driver, and
to increase readability.

Move mutex locking into sps30_do_meas() and tune it up to use guard()(),
as every caller takes the lock anyways.

Signed-off-by: Maxwell Doose <m32285159@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:48 +01:00
Uwe Kleine-König (The Capable Hub)
f68afce8e8 iio: Initialize i2c_device_id arrays using member names 
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.

The mentioned robustness is relevant for a planned change to struct
i2c_device_id that replaces .driver_data by an anonymous union.

This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Siratul Islam <email@sirat.me>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:46 +01:00
Nikhil Gautam
20c598e82c iio: chemical: bme680: use BME680_NUM_CHANNELS for scan buffer 
Use BME680_NUM_CHANNELS instead of the hardcoded channel count
in the scan buffer.

This avoids use of a magic number and improves code readability
and maintainability.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Nikhil Gautam <nikhilgtr@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 10:59:42 +01:00
Stepan Ionichev
8e9c394520 iio: chemical: scd30: reject (response=NULL, size>0) in scd30_i2c_command() 
scd30_i2c_command() takes an opaque "response" buffer plus its size.
At the start of the function the code already checks if response is
NULL (via the rsp local), but the response-decoding loop after the
i2c transfer always dereferences rsp without re-checking. With the
current callers in scd30_core.c this is harmless, since write
commands pass response=NULL together with size=0 (so the loop body
is never entered).

The (response=NULL, size>0) combination has no useful meaning: there
is nowhere to put the bytes that come back from the chip. Treat it
as an invalid argument and bail out at the top of the function with
-EINVAL, instead of silently doing the i2c transfer and dereferencing
a NULL pointer in the decode loop.

smatch flagged the inconsistency:

  drivers/iio/chemical/scd30_i2c.c:104 scd30_i2c_command() error: we
    previously assumed rsp could be null (see line 77)

No functional change for the existing callers, which only ever use
(response=NULL, size=0) for writes and (response!=NULL, size>0) for
reads.

Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com>
Acked-by: Maxwell Doose <m32285159@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 10:59:37 +01:00
Giorgi Tchankvetadze
ae008f6539 iio: chemical: scd30: make command lookup table const 
scd30_i2c_cmd_lookup_tbl contains fixed opcodes and is
only read by scd30_i2c_command(). Make it const to document that it's immutable
and allow it to be placed in read-only memory.

Signed-off-by: Giorgi Tchankvetadze <giorgitchankvetadze1997@gmail.com>
Reviewed-by: Stepan Ionichev <sozdayvek@gmail.com>
Acked-by: Maxwell Doose <m32285159@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 10:59:37 +01:00
Krzysztof Kozlowski
c49965ae6b iio: Move MODULE_DEVICE_TABLE next to the table itself 
By convention MODULE_DEVICE_TABLE() immediately follows the ID table it
exports, because this is easier to read and verify.  It also makes more
sense since #ifdef for ACPI or OF could hide both of them.

Most of the drivers already have this correctly placed, so adjust
the missing ones.  No functional impact.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 10:59:34 +01:00
Maxwell Doose
60d877910a iio: chemical: scd30: Cleanup initializations and fix sign-extension bug 
Include linux/bitfield.h for FIELD_GET().

Create new macros for bit manipulation in combination with manual bit
manipulation being replaced with FIELD_GET().

The current variable declaration and initializations are barely readable
and use comma separations across multiple lines. Refactor the
initializations so that mantissa and exp have separate declarations and
sign gets initialized later.

In addition (and due to the nature of the cleanup), fix a sign-extension
bug where, float32 would get bitwise anded with ~BIT(31)
(which is 0xFFFFFFFF7FFFFFFF) which corrupted the exponent.

Fixes: 64b3d8b1b0 ("iio: chemical: scd30: add core driver")
Reported-by: sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260524020309.18618-1-m32285159%40gmail.com
Signed-off-by: Maxwell Doose <m32285159@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-27 11:24:29 +01:00
Antoniu Miclaus
5aba4f94b2 iio: chemical: scd30: fix division by zero in write_raw 
Add a zero check for val2 before using it as a divisor when setting the
sampling frequency. A user writing a zero fractional part to the
sampling_frequency sysfs attribute triggers a division by zero in the
kernel.

Fixes: 64b3d8b1b0 ("iio: chemical: scd30: add core driver")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-04-28 16:36:09 +01:00
Pengpeng Hou
673478bc29 iio: chemical: mhz19b: reject oversized serial replies 
mhz19b_receive_buf() appends each serdev chunk into the fixed
MHZ19B_CMD_SIZE receive buffer and advances buf_idx by len without
checking that the chunk fits in the remaining space. A large callback
can therefore overflow st->buf before the command path validates the
reply.

Reset the reply state before each command and reject oversized serial
replies before copying them into the fixed buffer. When an oversized
reply is detected, wake the waiter and report -EMSGSIZE instead of
overwriting st->buf.

Fixes: 4572a70b36 ("iio: chemical: Add support for Winsen MHZ19B CO2 sensor")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Acked-by: Gyeyoung Baek <gye976@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-04-28 16:36:08 +01:00
Jonathan Cameron
9e4e86a604 Linux 7.0-rc4 
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Merge tag 'v7.0-rc4' into togreg

Linux 7.0-rc4

Required for the ds4422 series which is build upon;
5187e03b81 ("iio: dac: ds4424: reject -128 RAW value")
 2026-03-22 12:20:42 +00:00
Shi Hao
1a18c847c8 iio: chemical: rephrase comment and fix a typo 
Rephrase the comment and fix a spelling mistake.

- insuffient -> insufficient

Signed-off-by: Shi Hao <i.shihao.999@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-03-21 19:29:08 +00:00
Antoniu Miclaus
c3914ce196 iio: chemical: sps30_serial: fix buffer size in sps30_serial_read_meas() 
sizeof(num) evaluates to sizeof(size_t) which is 8 bytes on 64-bit,
but the buffer elements are only 4 bytes. The same function already
uses sizeof(*meas) on line 312, making the mismatch evident. Use
sizeof(*meas) consistently.

Fixes: b2e171f5a5 ("iio: sps30: add support for serial interface")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Tomasz Duszynski <tduszyns@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-02-23 08:24:38 +00:00
Antoniu Miclaus
216345f98c iio: chemical: sps30_i2c: fix buffer size in sps30_i2c_read_meas() 
sizeof(num) evaluates to sizeof(size_t) (8 bytes on 64-bit) instead
of the intended __be32 element size (4 bytes). Use sizeof(*meas) to
correctly match the buffer element type.

Fixes: 8f3f130852 ("iio: sps30: separate core and interface specific code")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Tomasz Duszynski <tduszyns@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-02-23 08:24:38 +00:00
Chris Spencer
f55b9510cd iio: chemical: bme680: Fix measurement wait duration calculation 
This function refers to the Bosch BME680 API as the source of the
calculation, but one of the constants does not match the Bosch
implementation. This appears to be a simple transposition of two digits,
resulting in a wait time that is too short. This can cause the following
'device measurement cycle incomplete' check to occasionally fail, returning
EBUSY to user space.

Adjust the constant to match the Bosch implementation and resolve the EBUSY
errors.

Fixes: 4241665e6e ("iio: chemical: bme680: Fix sensor data read operation")
Link: https://github.com/boschsensortec/BME68x_SensorAPI/blob/v4.4.8/bme68x.c#L521
Signed-off-by: Chris Spencer <spencercw@gmail.com>
Acked-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-02-23 08:24:38 +00:00
Greg Kroah-Hartman
9991bbc6d5 IIO: New device support, features and cleanup for the 6.20/7.0 cycle. 
Slightly messier than normal unfortunately due to some conflicts
 and build config bugs related to I3C drivers.
 
 One last minute Kconfig fix right at the top after a linux-next report.
 I've simplified the Kconfig and made it match other instances in the kernel
 so that should be safe enough despite short soak time in front of build bots.
 
 Merge of an immutable branch from I3C to get some stubs that were missing
 and caused build issues with dual I2C / I3C drivers. This also brought in a
 drop of some deprecated interfaces so there is also one patch to update a
 new driver to not use those.
 
 We are having another go at using cleanup.h magic with the IIO mode claim
 functions after backing out last try at this. This time we have wrappers
 around the new ACQUIRE() and ACQUIRE_ERR() macros.
 Having been burnt once, we will be taking it a bit more slowly this time
 wrt to wide adoption of these! Thanks in particular to Kurt for taking
 on this core IIO work.
 
 New Device Support
 ==================
 
 adi,ad18113
 - New driver to support the AD18113 amplifier - an interesting device due
   to the external bypass paths where we need to describe what gain those
   paths have in DT. Longer term it will be interesting to see if this
   simplistic description is enough for real deployments.
 adi,ad4062
 - New driver for the AD4060 and AD4052 SAR ADCs including trigger, event
   and GPIO controller support.  Follow up patch replaced use of some
   deprecated I3C interfaces prior to the I3C immutable branch merge as
   that includes dropping them.
 adi,ad4134
 - New driver for the AD4134 24bit 4 channel simultaneous sampling ADC.
 adi,ad7768-1,
 - Add support for the ADAQ767-1, ADAQ7768-1 and ADAQ7769-1 ADCs after some
   rework to enable the driver to support multiple device types.
 adi,ad9467
 - Add support for the similar ad9211 ADC to this existing driver.
 - Make the selection of 2s comp mode explicit for normal operation and
   switch to offset binary when entering calibration mode.
 honeywell,abp2
 - New driver to support this huge family (100+) of board mount pressure and
   temperature sensors.
 maxim,max22007
 - New drier for this 4 channel DAC.
 memsic,mmc5633
 - New driver for this I2C/I3C magnetometer. Follow on patches fixed up
   issues related to single driver supporting both bus types.
 microchip,mcp747feb02
 - New driver for the Microchip MCP47F(E/V)B(0/1/2)1,
   MCP47F(E/V)B(0/1/2)2, MCP47F(E/V)B(0/1/2)4 and MCP47F(E/V)B(0/1/2)8
   buffered voltage output DACs.
 nxp,sar-adc
 - New driver support ADCs found on s32g2 and s32g3 platforms.
 ti,ads1018
 - New drier for the ADS1018 and ADS1118 SPI ADCs.
 ti,ads131m02
 - New driver supporting ADS131M(02/03/04/06/08)24-bit simultaneous sampling
   ADCs.
 
 Features
 ========
 
 iio-core
 - New IIO_DEV_ACQUIRE_DIRECT_MODE() / IIO_DEV_ACQUIRE_FAILED() +
   equivalents for the much rarer case where the mode needs pinning
   whether or not it is in direct mode.  These use the ACQUIRE()
   / ACQUIRE_ERR() infrastructure underneath to provide both simple
   checks on whether we got the requested mode and to provide scope
   based release. Applied in a few initial drivers.
 adi,ad9467
 - Support calibbias control
 adi,adf4377
 - Add support to act as a clock provider.
 adi,adxl380
 - Support low power 1KHz sampling frequency mode. Required rework of
   how events and filters were configured, plus applying of constraints
   when in this mode.
 rf-digital,rfd77402
 - Add interrupt support as alternative to polling for completion.
 st,lsm6dsx
 - Tap event detection (after considerable driver rework)
 
 Cleanup and Minor Fixes
 =======================
 
 More minor cleanup such as typos, white space etc not called out except
 where they were applied to a lot of drivers.
 
 Various drivers.
 - Use of dev_err_probe() to cleanup error handling.
 - Introduce local struct device and struct device_node variables to
   reduce duplication of getting them from containing structs.
 - Ensure uses of iio_trigger_generic_data_rdy_poll() set IRQF_NO_THREAD
   as that function calls non threaded child interrupt handlers.
 - Replace IRQF_ONESHOT in not thread interrupt handlers with
   IRQF_NO_THREAD to ensure they run as intended. Drop one unnecessary case.
 iio-sw-device/trigger.
 - Constify configs_group_operations structures.
 iio-buffer-dma / buffer-dma-engine
 - Use lockdep_assert_held() to replace WARN_ON() to check lock is
   correctly held.
 - Make use of cleanup.h magic to simplify various code paths.
 - Make iio_dma_buffer_init() return void rather than always success.
 
 adi,ad7766
 - Replace custom interrupt handler with iio_trigger_generic_data_rdy_poll()
 adi,ad9832
 - Drop legacy platform_data support.
 adi,ade9000
 - Add a maintainer entry.
 adi,adt7316
 - Move to EXPORT_GPL_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() so the compiler
   can cleanly drop unused pm structures and callbacks.
 adi,adxl345
 - Relax build constraint vs the driver that is in input so both may be
   built as modules and selection made at runtime.
 adi,adxl380
 - Make sure we don't read tail entries in the hardware fifo if a partial
   new scan has been written.
 - Move to a single larger regmap_noinc_read() to read the hardware fifo.
 aspeed,ast2600
 - Add missing interrupts property to DT binding.
 bosch,bmi270_i2c
 - Add missing MODULE_DEVICE_TABLE() macros so auto probing of modules can
   work.
 bosch,smi330
 - Drop duplicate assignment of IIO_TYPE in smi330_read_avail()
 - Use new common field_get() and field_prep() helpers to replace local
   version.
 honeywell,mprls0025pa
   Fixes delayed to merge window as late in cycle and we didn't want to delay
   the rest of the series.
 - Allow Kconfig selection of specific bus sub-drivers rather than tying that
   to the buses themselves being supported.
 - Zero spi_transfer structure to avoid chance of unintentionally set fields
   effecting transfer.
 - Fix a potential timing violation wrt to the chip select to first clock
   edge timing.
 - As recent driver, take risk inherent in dropping interrupt direction from
   driver as that should be set by firmware.
 - Fix wrong reported number of data bits for channel.
 - Fix a pressure channel calculation bug.
 - Rework to allow embedding the tx buffer in the iio_priv() structure rather
   than requiring separate allocation.
 - Move the buffer clearing to the shared core bringing it into affect for
   SPI as well as I2C.
 - Stricter checks for status byte.
 - Greatly simplify the measurement sequence.
 - Add a copyright entry to reflect Petre's continued work on this driver.
 intersil,isl29018
 - Switch from spritnf to sysfs_emit_at() to make it clear overflow can't
   occur.
 invensense,icm42600
 - Allow sysfs access to temperature when buffered capture in use as it
   does not impact other sensor data paths.
 invensense,itg3200
 - Check unused return value in read_raw() callback.
 men,z188
 - Drop now duplicated module alias.
 rf-digital,rfd77402
 - Add DT binding doc and explicit of_device_id table.
 - Poll for timeout with times as on datasheet, then replace opencoded
   version with read_poll_timeout().
 sensiron,scd4x
 - Add missing timestamp channel. The code to push it to the buffer was there
   but there was no way to turn it on.
 vti,sca3000
 - Fix resource leak if iio_device_register() fails.
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Merge tag 'iio-for-7.0a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: New device support, features and cleanup for the 6.20/7.0 cycle.

Slightly messier than normal unfortunately due to some conflicts
and build config bugs related to I3C drivers.

One last minute Kconfig fix right at the top after a linux-next report.
I've simplified the Kconfig and made it match other instances in the kernel
so that should be safe enough despite short soak time in front of build bots.

Merge of an immutable branch from I3C to get some stubs that were missing
and caused build issues with dual I2C / I3C drivers. This also brought in a
drop of some deprecated interfaces so there is also one patch to update a
new driver to not use those.

We are having another go at using cleanup.h magic with the IIO mode claim
functions after backing out last try at this. This time we have wrappers
around the new ACQUIRE() and ACQUIRE_ERR() macros.
Having been burnt once, we will be taking it a bit more slowly this time
wrt to wide adoption of these! Thanks in particular to Kurt for taking
on this core IIO work.

New Device Support
==================

adi,ad18113
- New driver to support the AD18113 amplifier - an interesting device due
  to the external bypass paths where we need to describe what gain those
  paths have in DT. Longer term it will be interesting to see if this
  simplistic description is enough for real deployments.
adi,ad4062
- New driver for the AD4060 and AD4052 SAR ADCs including trigger, event
  and GPIO controller support.  Follow up patch replaced use of some
  deprecated I3C interfaces prior to the I3C immutable branch merge as
  that includes dropping them.
adi,ad4134
- New driver for the AD4134 24bit 4 channel simultaneous sampling ADC.
adi,ad7768-1,
- Add support for the ADAQ767-1, ADAQ7768-1 and ADAQ7769-1 ADCs after some
  rework to enable the driver to support multiple device types.
adi,ad9467
- Add support for the similar ad9211 ADC to this existing driver.
- Make the selection of 2s comp mode explicit for normal operation and
  switch to offset binary when entering calibration mode.
honeywell,abp2
- New driver to support this huge family (100+) of board mount pressure and
  temperature sensors.
maxim,max22007
- New drier for this 4 channel DAC.
memsic,mmc5633
- New driver for this I2C/I3C magnetometer. Follow on patches fixed up
  issues related to single driver supporting both bus types.
microchip,mcp747feb02
- New driver for the Microchip MCP47F(E/V)B(0/1/2)1,
  MCP47F(E/V)B(0/1/2)2, MCP47F(E/V)B(0/1/2)4 and MCP47F(E/V)B(0/1/2)8
  buffered voltage output DACs.
nxp,sar-adc
- New driver support ADCs found on s32g2 and s32g3 platforms.
ti,ads1018
- New drier for the ADS1018 and ADS1118 SPI ADCs.
ti,ads131m02
- New driver supporting ADS131M(02/03/04/06/08)24-bit simultaneous sampling
  ADCs.

Features
========

iio-core
- New IIO_DEV_ACQUIRE_DIRECT_MODE() / IIO_DEV_ACQUIRE_FAILED() +
  equivalents for the much rarer case where the mode needs pinning
  whether or not it is in direct mode.  These use the ACQUIRE()
  / ACQUIRE_ERR() infrastructure underneath to provide both simple
  checks on whether we got the requested mode and to provide scope
  based release. Applied in a few initial drivers.
adi,ad9467
- Support calibbias control
adi,adf4377
- Add support to act as a clock provider.
adi,adxl380
- Support low power 1KHz sampling frequency mode. Required rework of
  how events and filters were configured, plus applying of constraints
  when in this mode.
rf-digital,rfd77402
- Add interrupt support as alternative to polling for completion.
st,lsm6dsx
- Tap event detection (after considerable driver rework)

Cleanup and Minor Fixes
=======================

More minor cleanup such as typos, white space etc not called out except
where they were applied to a lot of drivers.

Various drivers.
- Use of dev_err_probe() to cleanup error handling.
- Introduce local struct device and struct device_node variables to
  reduce duplication of getting them from containing structs.
- Ensure uses of iio_trigger_generic_data_rdy_poll() set IRQF_NO_THREAD
  as that function calls non threaded child interrupt handlers.
- Replace IRQF_ONESHOT in not thread interrupt handlers with
  IRQF_NO_THREAD to ensure they run as intended. Drop one unnecessary case.
iio-sw-device/trigger.
- Constify configs_group_operations structures.
iio-buffer-dma / buffer-dma-engine
- Use lockdep_assert_held() to replace WARN_ON() to check lock is
  correctly held.
- Make use of cleanup.h magic to simplify various code paths.
- Make iio_dma_buffer_init() return void rather than always success.

adi,ad7766
- Replace custom interrupt handler with iio_trigger_generic_data_rdy_poll()
adi,ad9832
- Drop legacy platform_data support.
adi,ade9000
- Add a maintainer entry.
adi,adt7316
- Move to EXPORT_GPL_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() so the compiler
  can cleanly drop unused pm structures and callbacks.
adi,adxl345
- Relax build constraint vs the driver that is in input so both may be
  built as modules and selection made at runtime.
adi,adxl380
- Make sure we don't read tail entries in the hardware fifo if a partial
  new scan has been written.
- Move to a single larger regmap_noinc_read() to read the hardware fifo.
aspeed,ast2600
- Add missing interrupts property to DT binding.
bosch,bmi270_i2c
- Add missing MODULE_DEVICE_TABLE() macros so auto probing of modules can
  work.
bosch,smi330
- Drop duplicate assignment of IIO_TYPE in smi330_read_avail()
- Use new common field_get() and field_prep() helpers to replace local
  version.
honeywell,mprls0025pa
  Fixes delayed to merge window as late in cycle and we didn't want to delay
  the rest of the series.
- Allow Kconfig selection of specific bus sub-drivers rather than tying that
  to the buses themselves being supported.
- Zero spi_transfer structure to avoid chance of unintentionally set fields
  effecting transfer.
- Fix a potential timing violation wrt to the chip select to first clock
  edge timing.
- As recent driver, take risk inherent in dropping interrupt direction from
  driver as that should be set by firmware.
- Fix wrong reported number of data bits for channel.
- Fix a pressure channel calculation bug.
- Rework to allow embedding the tx buffer in the iio_priv() structure rather
  than requiring separate allocation.
- Move the buffer clearing to the shared core bringing it into affect for
  SPI as well as I2C.
- Stricter checks for status byte.
- Greatly simplify the measurement sequence.
- Add a copyright entry to reflect Petre's continued work on this driver.
intersil,isl29018
- Switch from spritnf to sysfs_emit_at() to make it clear overflow can't
  occur.
invensense,icm42600
- Allow sysfs access to temperature when buffered capture in use as it
  does not impact other sensor data paths.
invensense,itg3200
- Check unused return value in read_raw() callback.
men,z188
- Drop now duplicated module alias.
rf-digital,rfd77402
- Add DT binding doc and explicit of_device_id table.
- Poll for timeout with times as on datasheet, then replace opencoded
  version with read_poll_timeout().
sensiron,scd4x
- Add missing timestamp channel. The code to push it to the buffer was there
  but there was no way to turn it on.
vti,sca3000
- Fix resource leak if iio_device_register() fails.

* tag 'iio-for-7.0a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (144 commits)
  iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
  iio: sca3000: Fix a resource leak in sca3000_probe()
  iio: proximity: rfd77402: Add interrupt handling support
  iio: proximity: rfd77402: Document device private data structure
  iio: proximity: rfd77402: Use devm-managed mutex initialization
  iio: proximity: rfd77402: Use kernel helper for result polling
  iio: proximity: rfd77402: Align polling timeout with datasheet
  iio: cros_ec: Allow enabling/disabling calibration mode
  iio: frequency: ad9523: correct kernel-doc bad line warning
  iio: buffer: buffer_impl.h: fix kernel-doc warnings
  iio: gyro: itg3200: Fix unchecked return value in read_raw
  MAINTAINERS: add entry for ADE9000 driver
  iio: accel: sca3000: remove unused last_timestamp field
  iio: accel: adxl372: remove unused int2_bitmask field
  iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
  iio: magnetometer: Remove IRQF_ONESHOT
  iio: Replace IRQF_ONESHOT with IRQF_NO_THREAD
  iio: Use IRQF_NO_THREAD
  iio: dac: Add MAX22007 DAC driver support
  dt-bindings: iio: dac: Add max22007
  ...
 2026-02-02 17:08:30 +01:00
Sebastian Andrzej Siewior
ac9fabd578 iio: Replace IRQF_ONESHOT with IRQF_NO_THREAD 
Passing IRQF_ONESHOT ensures that the interrupt source is masked until
the secondary (threaded) handler is done. If only a primary handler is
used then the flag makes no sense because the interrupt can not fire
(again) while its handler is running.
The flag also disallows force-threading of the primary handler and the
irq-core will warn about this.

The intention here was probably not allowing forced-threading for
handlers such as iio_trigger_generic_data_rdy_poll() will intends to
invoke hard-interrupt handlers.

Replace IRQF_ONESHOT with IRQF_NO_THREAD.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2026-01-29 16:11:50 +00:00
Fiona Klute
81d5a5366d iio: chemical: scd4x: fix reported channel endianness 
The driver converts values read from the sensor from BE to CPU
endianness in scd4x_read_meas(). The result is then pushed into the
buffer in scd4x_trigger_handler(), so on LE architectures parsing the
buffer using the reported BE type gave wrong results.

scd4x_read_raw() which provides sysfs *_raw values is not affected, it
used the values returned by scd4x_read_meas() without further
conversion.

Fixes: 49d22b695c ("drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor")
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-12-21 19:04:03 +00:00
Fiona Klute
e7324980fa iio: chemical: scd4x: expose timestamp channel 
Timestamps were already written to the buffer in
scd4x_trigger_handler(), this patch makes them available as a channel.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-12-21 18:04:41 +00:00
Sakari Ailus
4a0f375931 iio: chemical: Remove redundant pm_runtime_mark_last_busy() calls 
pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
pm_runtime_mark_last_busy().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patch.msgid.link/20250825135401.1765847-4-sakari.ailus@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-08-25 15:57:34 +01:00
Xichao Zhao
e407199c96 iio: chemical: Remove dev_err_probe() if error is -ENOMEM 
The dev_err_probe() doesn't do anything when the error is '-ENOMEM'.
Therefore, remove the useless call to dev_err_probe(), and just return the
value instead.

Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Reviewed-by: Gustavo Silva <gustavograzs@gmail.com> # for ens160
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250821080723.525379-4-zhao.xichao@vivo.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-08-25 09:40:24 +01:00
David Lechner
1e9e9669ff iio: chemical: atlas-ezo-sensor: make atlas_ezo_devices const 
Add const qualifier to struct atlas_ezo_device atlas_ezo_devices[]. This
is read-only data so it can be made const.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250628-iio-const-data-13-v1-1-2a7fd592a07c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-07-06 10:37:52 +01:00
David Lechner
d2614c43af iio: chemical: sunrise_co2: use = { } instead of memset() 
Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611-iio-zero-init-stack-with-instead-of-memset-v1-14-ebb2d0a24302@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-26 19:32:56 +01:00
David Lechner
5226b48b57 iio: chemical: scd30: use = { } instead of memset() 
Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611-iio-zero-init-stack-with-instead-of-memset-v1-13-ebb2d0a24302@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-26 19:32:56 +01:00
David Lechner
27d782612a iio: chemical: scd4x: use = { } instead of memset() 
Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611-iio-zero-init-stack-with-instead-of-memset-v1-12-ebb2d0a24302@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-26 19:32:56 +01:00
chuguangqing
5c3f062483 iio: chemical: bme680: convert to use maple tree register cache 
The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache.

Signed-off-by: chuguangqing <chuguangqing@inspur.com>
Link: https://patch.msgid.link/20250611085838.4761-2-chuguangqing@inspur.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-26 19:32:52 +01:00
Waqar Hameed
851b85447c iio: Remove single use of macro definition for regmap name 
There is really no reason for having the `regmap` name as a macro
definition if it is only used once directly in `struct regmap_config`.
It is also more readable this way. Remove these macro definitions and
instead use the string literal directly.

Signed-off-by: Waqar Hameed <waqar.hameed@axis.com>
Link: https://patch.msgid.link/3a8572de8316c7d2746c2ccea8c478f594221319.1748356671.git.waqar.hameed@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-09 07:45:36 +01:00
Greg Kroah-Hartman
0ca7cb7089 IIO: New device support, features and cleanup for 6.16 - take 2 
Note - last minute rebase was to drop a typo patch that I'd accidentally
 picked up (in the microblaze arch Kconfig)
 Take 2 is due to that rebase messing up some fixes tags that were
 referring to patches after that point.
 
 There is a known merge conflict due to changes in neighbouring lines.
 
 Stephen's resolution in linux-next is:
 https://lore.kernel.org/linux-next/20250506155728.65605bae@canb.auug.org.au/
 
 Added 3 named IIO reviewers to MAINTAINERS. This is a reflection of those
 who have been doing much of this work for some time. Lars-Peter is
 removed from the entry having moved on to other topics.  Thanks
 Nuno, David and Andy for stepping up and Lars-Peter for all your
 hard work in the past!
 
 Includes the usual mix of new device support, features and general
 cleanup.
 
 This time we also have some tree wide changes.
 
 - Rip out the iio_device_claim_direct_scoped() as it proved hard to work
   with.  This series includes quite a few related cleanups such as use
   of guard or factoring code out to allow direct returns.
 - Switch from iio_device_claim/release_direct_mode() to new
   iio_device_claim/release_direct() which is structured so that sparse
   can warn on failed releases. There were a few false positives but
   those were mostly in code that benefited from being cleaned up as part
   of this process.
 - Introduce iio_push_to_buffers_with_ts() to replace the _timestamp()
   version over time. This version takes the size of the supplied buffer
   which the core checks is at least as big as expected by calculation
   from channel descriptions of those channels enabled. Use this in
   an initial set of drivers.
 - Add macros for IIO_DECLARE_BUFFER_WITH_TS() and
   IIO_DECLARE_DMA_BUFFER_WITH_TS() to avoid lots of fiddly code to ensure
   correctly aligned buffers for timestamps being added onto the end of
   channel data.
 
 New device support
 ------------------
 
 adi,ad3530r
 - New driver for AD3530, AD3530R, AD3531 and AD3531R DACs with
   programmable gain controls. R variants have internal references.
 adi,ad7476
 - Add support (dt compatible only) for the Rohm BU79100G ADC which is
   fully compatible with the ti,ads7866.
 adi,ad7606
 - Support ad7606c-16 and ad7606c-18 devices. Includes switch to dynamic
   channel information allocation.
 adi,ad7380
 - Add support for the AD7389-4
 dfrobot,sen0322
 - New driver for this oxygen sensor.
 mediatek,mt2701-auxadc
 - Add binding for MT6893 which is fully compatible with already supported
   MT8173.
 meson-saradc
 - Support the GXLX SoCs.  Mostly this is a workaround for some unrelated
   clock control bits found in the ADC register map.
 nuvoton,nct7201
 - New driver for NCT7201 and NCT7202 I2C ADCs.
 rohm,bd79124
 - New driver for this 12-bit, 8-channel SAR ADC.
 - Switch to new set_rv etc gpio callbacks that were added in 6.15.
 rohm,bd79703
 - Add support for BD79700, BD79701 and BD79702 DACs that have subsets of
   functionality of the already supported bd79703.  Included making this
   driver suitable for support device variants.
 st,stm32-lptimer
 - Add support for stm32pm25 to this trigger.
 
 Features
 --------
 
 Beyond IIO
 - Property iterator for named children.
 core
 - Enable writes for 64 bit integers used for standard IIO ABI elements.
   Previously these could be read only.
 - Helper library that should avoid code duplication for simpler ADC
   bindings that have a child node per channel.
 - Enforce that IIO_DMA_MINALIGN is always at least 8 (almost always true
   and simplifies code on all significant architectures)
 core/backend
 - Add support to control source of data - useful when the HDL includes
   things like generated ramps for testing purposes. Enable this for
   adi-axi-dac
 adi,ad3552-hs
 - Add debugfs related callbacks to allow debug access to register contents.
 adi,ad4000
 - Support SPI offload with appropriate FPGA firmware along with improving
   documentation.
 adi,ad7293
 - Add support for external reference voltage.
 adi,ad7606
 - Support SPI offload.
 adi,ad7768-1
 - Support reset GPIO.
 adi,admv8818
 - Support filter frequencies beyond 2^32.
 adi,adxl345
 - Add single and double tap events.
 hid-sensor-prox
 - Support 16-bit report sizes as seen on some Intel platforms.
 invensense,icm42600
 - Enable use of named interrupts to avoid problems with some wiring choices.
   Get the interrupt by name, but fallback to previous assumption on the first
   being INT1 if no names are supplied.
 microchip,mcp3911
 - Add reset gpio support.
 rohm,bh7150
 - Add reset gpio support.
 st,stm32
 - Add support to control oversampling.
 ti,adc128s052
 - Add support for ROHM BD79104 which is early compatible with the TI
   parts already supported by this driver. Includes some general driver
   cleanup and a separate dt binding.
 - Simplify reference voltage handling by assuming it is fixed after enabling
   the supply.
 winsen,mhz19b
 - New driver for this C02 sensor.
 
 Cleanup and minor fixes
 -----------------------
 
 dt-bindings
 - Correct indentation and style for DTS examples.
 - Use unevalutateProperties for SPI devices instead of additionalProperties
   to allow generic SPI properties from spi-peripheral-props.yaml
 ABI Docs
 - Add missing docs for sampling_frequency when it applies only to events.
 Treewide
 - Various minor tweaks, comment fixes and similar.
 - Sort TI ADCs in Kconfig that had gotten out of order.
 - Switch various drives that provide GPIO chip functionality to the new
   callbacks with return values.
 - Standardize on { } formatting for all array sentinels.
 - Make use of aligned_s64 in a few places to replace either wrong types
   or manually defined equivalents.
 - Drop places where spi bits_per_word is set to 8 because that is the
   default anyway.
 
 adi,ad_sigma_delta library
 - Avoid a potential use of uninitialized data if reg_size has a value
   that is not supported (no drivers hit this but it is reasonable hardening)
 adi,ad4030
 - Add error checking for scan types and no longer store it in state.
 - Rework code to reduce duplication.
 - Move setting the mode from buffer preenable() to update_scan_mode(),
   better matching expected semantics of the two different callbacks.
 - Improve data marshalling comments.
 adi,ad4695
 - Use u16 for buffer elements as oversampling is not yet supported except
   with SPI offload (which doesn't use this path).
 adi,ad5592r
 - Clean up destruction of mutexes.
 - Use lock guards to simplify code (later patch fixes a missed unlock)
 adi,ad5933
 - Correct some incorrect settling times.
 adi,ad7091
 - Deduplicate handling of writable vs volatile registers as they are the
   inverse of each other for this device.
 adi,ad7124
 - Fix 3db Filter frequency.
 - Remove ability to directly write the filter frequency (which was broken)
 - Register naming improvements.
 adi,ad7606
 - Add a missing return value check.
 - Fill in max sampling rates for all chips.
 - Use devm_mutex_init()
 - Fix up some kernel-doc formatting issues.
 - Remove some camel case that snuck in.
 - Drop setting address field in channels as easily established from other
   fields.
 - Drop unnecessary parameter to ad76060_scale_setup_cb_t.
 adi,ad7768-1
 - Convert to regmap.
 - Factor out buffer allocation.
 - Tidy up headers.
 adi,ad7944
 - Stop setting bits_per_word in SPI xfers with no data.
 adi,ad9832
 - Add of_device_id table rather than just relying on fallbacks.
 - Use FIELD_PREP() to set values of fields.
 adi,admv1013
 - Cleanup a pointless ternary.
 adi,admv8818
 - Fix up LPF Band 5 frequency which was slightly wrong.
 - Fix an integer overflow.
 - Fix range calculation
 adi,adt7316
 - Replace irqd_get_trigger_type(irq_get_irq_data()) with simpler
   irq_get_trigger_type()
 adi,adxl345
 - Use regmap cache instead of various state variables that were there to
   reduce bus accesses.
 - Make regmap return value checking consistent across all call sites.
 adi,axi-dac
 - Add a check on number of channels (0 to 15 valid)
 allwinner,sun20i
 - Use new adc-helpers to replace local parsing code for channel nodes.
 bosch,bmp290
 - Move to local variables for sensor data marshalling removing the need
   for a messy definition that has to work for all supported parts.
   Follow up fix adds a missing initialization.
 dynaimage,al3010 and dynaimage,al3320a
 - Various minor cleanup to bring these drivers inline with reviewed feedback
   given on a new driver.
 - Fix an error path in which power down is not called when it should be.
 - Switch to regmap.
 google,cros_ec
 - Fix up a flexible array in middle of structure warning.
 - Flush fifo when changing the timeout to avoid potential long wait
   for samples.
 hid-sensor-rotation
 - Remove an __aligned(16) marking that doesn't seem to be justified.
 kionix,kxcjk-1013
 - Deduplicate code for setting up interrupts.
 microchip,mcp3911
 - Fix handling of conversion results register which differs across supported
   devices.
 idt,zopt2201
 - Avoid duplicating register lists as all volatile registers are the
   inverse of writeable registers on this device.
 renesas,rzg2l
 - Use new adc-helpers to replace local parsing code for channel nodes.
 ti,ads1298
 - Fix a missing Kconfig dependency.
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Merge tag 'iio-for-6.16a-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: New device support, features and cleanup for 6.16 - take 2

Note - last minute rebase was to drop a typo patch that I'd accidentally
picked up (in the microblaze arch Kconfig)
Take 2 is due to that rebase messing up some fixes tags that were
referring to patches after that point.

There is a known merge conflict due to changes in neighbouring lines.

Stephen's resolution in linux-next is:
https://lore.kernel.org/linux-next/20250506155728.65605bae@canb.auug.org.au/

Added 3 named IIO reviewers to MAINTAINERS. This is a reflection of those
who have been doing much of this work for some time. Lars-Peter is
removed from the entry having moved on to other topics.  Thanks
Nuno, David and Andy for stepping up and Lars-Peter for all your
hard work in the past!

Includes the usual mix of new device support, features and general
cleanup.

This time we also have some tree wide changes.

- Rip out the iio_device_claim_direct_scoped() as it proved hard to work
  with.  This series includes quite a few related cleanups such as use
  of guard or factoring code out to allow direct returns.
- Switch from iio_device_claim/release_direct_mode() to new
  iio_device_claim/release_direct() which is structured so that sparse
  can warn on failed releases. There were a few false positives but
  those were mostly in code that benefited from being cleaned up as part
  of this process.
- Introduce iio_push_to_buffers_with_ts() to replace the _timestamp()
  version over time. This version takes the size of the supplied buffer
  which the core checks is at least as big as expected by calculation
  from channel descriptions of those channels enabled. Use this in
  an initial set of drivers.
- Add macros for IIO_DECLARE_BUFFER_WITH_TS() and
  IIO_DECLARE_DMA_BUFFER_WITH_TS() to avoid lots of fiddly code to ensure
  correctly aligned buffers for timestamps being added onto the end of
  channel data.

New device support
------------------

adi,ad3530r
- New driver for AD3530, AD3530R, AD3531 and AD3531R DACs with
  programmable gain controls. R variants have internal references.
adi,ad7476
- Add support (dt compatible only) for the Rohm BU79100G ADC which is
  fully compatible with the ti,ads7866.
adi,ad7606
- Support ad7606c-16 and ad7606c-18 devices. Includes switch to dynamic
  channel information allocation.
adi,ad7380
- Add support for the AD7389-4
dfrobot,sen0322
- New driver for this oxygen sensor.
mediatek,mt2701-auxadc
- Add binding for MT6893 which is fully compatible with already supported
  MT8173.
meson-saradc
- Support the GXLX SoCs.  Mostly this is a workaround for some unrelated
  clock control bits found in the ADC register map.
nuvoton,nct7201
- New driver for NCT7201 and NCT7202 I2C ADCs.
rohm,bd79124
- New driver for this 12-bit, 8-channel SAR ADC.
- Switch to new set_rv etc gpio callbacks that were added in 6.15.
rohm,bd79703
- Add support for BD79700, BD79701 and BD79702 DACs that have subsets of
  functionality of the already supported bd79703.  Included making this
  driver suitable for support device variants.
st,stm32-lptimer
- Add support for stm32pm25 to this trigger.

Features
--------

Beyond IIO
- Property iterator for named children.
core
- Enable writes for 64 bit integers used for standard IIO ABI elements.
  Previously these could be read only.
- Helper library that should avoid code duplication for simpler ADC
  bindings that have a child node per channel.
- Enforce that IIO_DMA_MINALIGN is always at least 8 (almost always true
  and simplifies code on all significant architectures)
core/backend
- Add support to control source of data - useful when the HDL includes
  things like generated ramps for testing purposes. Enable this for
  adi-axi-dac
adi,ad3552-hs
- Add debugfs related callbacks to allow debug access to register contents.
adi,ad4000
- Support SPI offload with appropriate FPGA firmware along with improving
  documentation.
adi,ad7293
- Add support for external reference voltage.
adi,ad7606
- Support SPI offload.
adi,ad7768-1
- Support reset GPIO.
adi,admv8818
- Support filter frequencies beyond 2^32.
adi,adxl345
- Add single and double tap events.
hid-sensor-prox
- Support 16-bit report sizes as seen on some Intel platforms.
invensense,icm42600
- Enable use of named interrupts to avoid problems with some wiring choices.
  Get the interrupt by name, but fallback to previous assumption on the first
  being INT1 if no names are supplied.
microchip,mcp3911
- Add reset gpio support.
rohm,bh7150
- Add reset gpio support.
st,stm32
- Add support to control oversampling.
ti,adc128s052
- Add support for ROHM BD79104 which is early compatible with the TI
  parts already supported by this driver. Includes some general driver
  cleanup and a separate dt binding.
- Simplify reference voltage handling by assuming it is fixed after enabling
  the supply.
winsen,mhz19b
- New driver for this C02 sensor.

Cleanup and minor fixes
-----------------------

dt-bindings
- Correct indentation and style for DTS examples.
- Use unevalutateProperties for SPI devices instead of additionalProperties
  to allow generic SPI properties from spi-peripheral-props.yaml
ABI Docs
- Add missing docs for sampling_frequency when it applies only to events.
Treewide
- Various minor tweaks, comment fixes and similar.
- Sort TI ADCs in Kconfig that had gotten out of order.
- Switch various drives that provide GPIO chip functionality to the new
  callbacks with return values.
- Standardize on { } formatting for all array sentinels.
- Make use of aligned_s64 in a few places to replace either wrong types
  or manually defined equivalents.
- Drop places where spi bits_per_word is set to 8 because that is the
  default anyway.

adi,ad_sigma_delta library
- Avoid a potential use of uninitialized data if reg_size has a value
  that is not supported (no drivers hit this but it is reasonable hardening)
adi,ad4030
- Add error checking for scan types and no longer store it in state.
- Rework code to reduce duplication.
- Move setting the mode from buffer preenable() to update_scan_mode(),
  better matching expected semantics of the two different callbacks.
- Improve data marshalling comments.
adi,ad4695
- Use u16 for buffer elements as oversampling is not yet supported except
  with SPI offload (which doesn't use this path).
adi,ad5592r
- Clean up destruction of mutexes.
- Use lock guards to simplify code (later patch fixes a missed unlock)
adi,ad5933
- Correct some incorrect settling times.
adi,ad7091
- Deduplicate handling of writable vs volatile registers as they are the
  inverse of each other for this device.
adi,ad7124
- Fix 3db Filter frequency.
- Remove ability to directly write the filter frequency (which was broken)
- Register naming improvements.
adi,ad7606
- Add a missing return value check.
- Fill in max sampling rates for all chips.
- Use devm_mutex_init()
- Fix up some kernel-doc formatting issues.
- Remove some camel case that snuck in.
- Drop setting address field in channels as easily established from other
  fields.
- Drop unnecessary parameter to ad76060_scale_setup_cb_t.
adi,ad7768-1
- Convert to regmap.
- Factor out buffer allocation.
- Tidy up headers.
adi,ad7944
- Stop setting bits_per_word in SPI xfers with no data.
adi,ad9832
- Add of_device_id table rather than just relying on fallbacks.
- Use FIELD_PREP() to set values of fields.
adi,admv1013
- Cleanup a pointless ternary.
adi,admv8818
- Fix up LPF Band 5 frequency which was slightly wrong.
- Fix an integer overflow.
- Fix range calculation
adi,adt7316
- Replace irqd_get_trigger_type(irq_get_irq_data()) with simpler
  irq_get_trigger_type()
adi,adxl345
- Use regmap cache instead of various state variables that were there to
  reduce bus accesses.
- Make regmap return value checking consistent across all call sites.
adi,axi-dac
- Add a check on number of channels (0 to 15 valid)
allwinner,sun20i
- Use new adc-helpers to replace local parsing code for channel nodes.
bosch,bmp290
- Move to local variables for sensor data marshalling removing the need
  for a messy definition that has to work for all supported parts.
  Follow up fix adds a missing initialization.
dynaimage,al3010 and dynaimage,al3320a
- Various minor cleanup to bring these drivers inline with reviewed feedback
  given on a new driver.
- Fix an error path in which power down is not called when it should be.
- Switch to regmap.
google,cros_ec
- Fix up a flexible array in middle of structure warning.
- Flush fifo when changing the timeout to avoid potential long wait
  for samples.
hid-sensor-rotation
- Remove an __aligned(16) marking that doesn't seem to be justified.
kionix,kxcjk-1013
- Deduplicate code for setting up interrupts.
microchip,mcp3911
- Fix handling of conversion results register which differs across supported
  devices.
idt,zopt2201
- Avoid duplicating register lists as all volatile registers are the
  inverse of writeable registers on this device.
renesas,rzg2l
- Use new adc-helpers to replace local parsing code for channel nodes.
ti,ads1298
- Fix a missing Kconfig dependency.

* tag 'iio-for-6.16a-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (260 commits)
  dt-bindings: iio: adc: Add ROHM BD79100G
  iio: adc: add support for Nuvoton NCT7201
  dt-bindings: iio: adc: add NCT7201 ADCs
  iio: chemical: Add driver for SEN0322
  dt-bindings: trivial-devices: Document SEN0322
  iio: adc: ad7768-1: reorganize driver headers
  iio: bmp280: zero-init buffer
  iio: ssp_sensors: optimalize -> optimize
  HID: sensor-hub: Fix typo and improve documentation
  iio: admv1013: replace redundant ternary operator with just len
  iio: chemical: mhz19b: Fix error code in probe()
  iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS
  iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS
  iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS
  iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS
  iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS
  iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros
  iio: make IIO_DMA_MINALIGN minimum of 8 bytes
  iio: pressure: zpa2326_spi: remove bits_per_word = 8
  iio: pressure: ms5611_spi: remove bits_per_word = 8
  ...
 2025-05-22 15:54:52 +02:00
Tóth János
d524b3e0ef iio: chemical: Add driver for SEN0322 
Add support for the DFRobot SEN0322 oxygen sensor.

To instantiate (assuming device is connected to I2C-2):
	echo 'sen0322 0x73' > /sys/class/i2c-dev/i2c-2/device/new_device

To get the oxygen concentration (assuming device is iio:device0) multiply
the values read from:
	/sys/bus/iio/devices/iio:device0/in_concentration_raw
	/sys/bus/iio/devices/iio:device0/in_concentration_scale

Datasheet: https://wiki.dfrobot.com/Gravity_I2C_Oxygen_Sensor_SKU_SEN0322
Signed-off-by: Tóth János <gomba007@gmail.com>
Link: https://patch.msgid.link/20250506-iio-chemical-sen0322-v4-2-1465ac8dc190@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-21 14:22:32 +01:00
Dan Carpenter
805bbd3ac9 iio: chemical: mhz19b: Fix error code in probe() 
Return -ENOMEM if devm_iio_device_alloc() fails.  Don't return success.

Fixes: 4572a70b36 ("iio: chemical: Add support for Winsen MHZ19B CO2 sensor")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Acked-by: Gyeyoung Baek <gye976@gmail.com>
Link: https://patch.msgid.link/aBtZFLFlr0slcYSi@stanley.mountain
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-21 14:21:08 +01:00
David Lechner
2fa33f8710 iio: chemical: bme680_spi: remove bits_per_word = 8 
Remove setting bits_per_word = 8 from the bme680 driver. This is the
default value for SPI transfers, so it is not necessary to explicitly
set it.

Since no other SPI settings are changed, we can also remove the call to
spi_setup().

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-3-341f85fcfe11@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-21 14:20:30 +01:00
Gyeyoung Baek
4572a70b36 iio: chemical: Add support for Winsen MHZ19B CO2 sensor 
Add support for Winsen MHZ19B CO2 sensor.

Datasheet: https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf
Signed-off-by: Gyeyoung Baek <gye976@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250423194100.53934-4-gye976@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-21 14:20:28 +01:00
Jonathan Cameron
cb4691913d iio: chemical: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. 
This new function allows us to perform debug checks in the helper to ensure
that the overrun does not occur.  Use it in all the simple cases where
either a static buffer or a structure is used in the drivers.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250413103443.2420727-13-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-21 14:20:26 +01:00
David Lechner
70788d26ae iio: normalize array sentinel style 
Use `\t(\{ ?\},|\{\}|\{\s*/\*.*\*/\s*\},?)$` regex to find and replace
the array sentinel in all IIO drivers to the same style.

For some time, we've been trying to consistently use `{ }` (no trailing
comma, no comment, one space between braces) for array sentinels in the
IIO subsystem. Still nearly 50% of existing code uses a different style.
To save reviewers from having to request this trivial change as
frequently, let's normalize the style in all existing IIO drivers.
At least when code is copy/pasted to new drivers, the style will be
consistent.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250411-iio-sentinel-normalization-v1-1-d293de3e3d93@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-04-22 19:10:04 +01:00