Commit Graph

145 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
821f7ce79f First set of new device support, features and cleanups for IIO in the 5.6 cycle
New device support
 
 * ad7091r5 ADC
   - New driver with follow up patch adding scale and vref support.
   - DT bindings
 * ad7923
   - Support for ad7908, ad7918 and ad7928 added to driver.
 * bma180
   - Support the BMA254 accelerometer. Required fairly substantial rework
     to allow for small differences between this an existing parts.
 * bma400 accelerometer
   - New driver with follow up patch for regulator support.
   - DT bindings.
 * asc dlhl60d
   - New driver support this range of pressure and temperature sensors.
   - DT bindings.
 * ltc2496 ADC
   - New driver to support this ADC.
   - Split the existing LTC2497 driver generic component out and reuse.
   - DT bindings.
 * parallax ping
   - New driver supporting ultrasonic and laser tof distance sensors.
   - Bindings for these sensors.
 
 New features
 
 * core
   - New char type for read_raw returns, used for thermocouple types.
   - Rename read_first_n callback to read.   The reasons behind the original
     naming are lost to the mists of time.
 * ad799x
   - Allow pm_ops to disable device completely allowing regulator power down.
 * bma180
   - Enable basic regulator support.
 * dmaengine buffer
   - Report platform data alignment requirements via new ABI.
 * max31856
   - Add option to set mains filter rejection frequency and document
     new in_temp_filter_notch_center_frequency ABI.
   - Add support for configuring HW averaging (oversampling ratio)
   - Add runtime configuration of thermocouple type and document new ABI.
 * maxim-thermocouple
   - Add read only access to thermocouple type using new ABI, includes
     adding more specific compatibles to reflect which variant of the
     chip is being used.
 * mpu6050
   - Provide option to support the PMU9150 in package magnetometer directly
     rather than via auxiliary bus.
 * stm32_adc
   - Add overrun interrupt checks to detect if this happens.
 * st_lsm6dsx
   - Enable the sensor-hub support for lsm6dsm. Includes various reworks to
     allow this.
 
 Cleanups and minor fixes
 
 * Subsystem wide
   - Tidy up indentation in Kconfig and fix alphabetical order of AD7091R5.
   - Drop linux/gpio.h and linux/of_gpio.h from drivers that don't use them.
 * ad7266
   - Convert to GPIO descriptors.
 * ad7303
   - Avoid a dance with checking if the regulator is supplied by just
     using the optional request interface.
 * ad7887
   - Simplify channel specification assignment to enable adding more devices.
 * ad7923
   - Drop some unused and largely pointless defines of BOB_N==N variety.
   - Tidy up checkpatch warnings.
   - Add missing of_device_id table.
 * adf4350
   - Convert to GPIO descriptors.
 * ak8975
   - Convert to GPIO descriptors.
 * ADIS library and drivers
   - Expand scope of txrx_lock to cover all state and rename as state_lock
   - Add unlocked read / write to allow grouping of consecutive calls under
     single lock / unlock.
   - Add unlocked check_status, reset to allow grouping under single
     lock / unlock.
   - Remove remaining uses of core mlock for local state protection.
     mlock should never be used directly as it protects tightly defined
     core IIO device management state.
 * adis16240
   - Enforce only supported SPI mode on driver load + add DT binding doc.
 * atlas-ph-sensor
   - Rename to atlas-sensor given it now covers things beyond ph sensors.
 * bma180
   - Use local dev variable to tidy up code.
   - Use c99 style explicity .member assignment to make driver more readable.
 * bmp280
   - Drop ACPI support. No evidence this was used and appropriate ID is not
     registered.
   - Allow ACPI to bind device via PRP0001
 * dmaengine buffer
   - Use dma_request_chan instead of dma_request_slave_channel_reason as that
     ABI is going away.
   - Add module info to avoid tainting the kernel.
 * hts221
   - Avoid magic number defines when only used to fill structure elements
     that are self describing.
 * lm3533
   - Drop a stray semicolon.
 * max9611
   - Cleanup enum handling to be more resilient to future changes.
 * mpu6050
   - Delete MPU9150 from supported SPI devices as doesn't provide SPI.
   - Select I2C_MUX again after kbuild issue fixed elsewhere.
 * stm32-timer
   - Drop an unnecessary register update.
 * ssp_sensors
   - Convert to GPIO descriptors.
 * st_sensors
   - drop !CONFIG_ACPI defines as ACPI_PTR() will stop them being used
     anyway.
   - Make default platform data structures __maybe_unsued.
   - Fill in some missing kernel-doc function parameters.
 * st_lsm6dsx
   - white space fixes.
   - Mark some constants that aren't always used as __maybe_unused.
   - Drop of ID table guards as they just pervent use under ACPI.
   - Switch to device properties to allow ACPI usage.
 * st_uvis25
   - Drop acpi.h include as no ACPI APIs used.
 * ti-ads1015
   - Drop legacy platform data as no one seems to be using it.
   - Use the device property API instead of OF specific.
 * ti-ads7950
   - typo fix in error message.
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Merge tag 'iio-for-5.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of new device support, features and cleanups for IIO in the 5.6 cycle

New device support

* ad7091r5 ADC
  - New driver with follow up patch adding scale and vref support.
  - DT bindings
* ad7923
  - Support for ad7908, ad7918 and ad7928 added to driver.
* bma180
  - Support the BMA254 accelerometer. Required fairly substantial rework
    to allow for small differences between this an existing parts.
* bma400 accelerometer
  - New driver with follow up patch for regulator support.
  - DT bindings.
* asc dlhl60d
  - New driver support this range of pressure and temperature sensors.
  - DT bindings.
* ltc2496 ADC
  - New driver to support this ADC.
  - Split the existing LTC2497 driver generic component out and reuse.
  - DT bindings.
* parallax ping
  - New driver supporting ultrasonic and laser tof distance sensors.
  - Bindings for these sensors.

New features

* core
  - New char type for read_raw returns, used for thermocouple types.
  - Rename read_first_n callback to read.   The reasons behind the original
    naming are lost to the mists of time.
* ad799x
  - Allow pm_ops to disable device completely allowing regulator power down.
* bma180
  - Enable basic regulator support.
* dmaengine buffer
  - Report platform data alignment requirements via new ABI.
* max31856
  - Add option to set mains filter rejection frequency and document
    new in_temp_filter_notch_center_frequency ABI.
  - Add support for configuring HW averaging (oversampling ratio)
  - Add runtime configuration of thermocouple type and document new ABI.
* maxim-thermocouple
  - Add read only access to thermocouple type using new ABI, includes
    adding more specific compatibles to reflect which variant of the
    chip is being used.
* mpu6050
  - Provide option to support the PMU9150 in package magnetometer directly
    rather than via auxiliary bus.
* stm32_adc
  - Add overrun interrupt checks to detect if this happens.
* st_lsm6dsx
  - Enable the sensor-hub support for lsm6dsm. Includes various reworks to
    allow this.

Cleanups and minor fixes

* Subsystem wide
  - Tidy up indentation in Kconfig and fix alphabetical order of AD7091R5.
  - Drop linux/gpio.h and linux/of_gpio.h from drivers that don't use them.
* ad7266
  - Convert to GPIO descriptors.
* ad7303
  - Avoid a dance with checking if the regulator is supplied by just
    using the optional request interface.
* ad7887
  - Simplify channel specification assignment to enable adding more devices.
* ad7923
  - Drop some unused and largely pointless defines of BOB_N==N variety.
  - Tidy up checkpatch warnings.
  - Add missing of_device_id table.
* adf4350
  - Convert to GPIO descriptors.
* ak8975
  - Convert to GPIO descriptors.
* ADIS library and drivers
  - Expand scope of txrx_lock to cover all state and rename as state_lock
  - Add unlocked read / write to allow grouping of consecutive calls under
    single lock / unlock.
  - Add unlocked check_status, reset to allow grouping under single
    lock / unlock.
  - Remove remaining uses of core mlock for local state protection.
    mlock should never be used directly as it protects tightly defined
    core IIO device management state.
* adis16240
  - Enforce only supported SPI mode on driver load + add DT binding doc.
* atlas-ph-sensor
  - Rename to atlas-sensor given it now covers things beyond ph sensors.
* bma180
  - Use local dev variable to tidy up code.
  - Use c99 style explicity .member assignment to make driver more readable.
* bmp280
  - Drop ACPI support. No evidence this was used and appropriate ID is not
    registered.
  - Allow ACPI to bind device via PRP0001
* dmaengine buffer
  - Use dma_request_chan instead of dma_request_slave_channel_reason as that
    ABI is going away.
  - Add module info to avoid tainting the kernel.
* hts221
  - Avoid magic number defines when only used to fill structure elements
    that are self describing.
* lm3533
  - Drop a stray semicolon.
* max9611
  - Cleanup enum handling to be more resilient to future changes.
* mpu6050
  - Delete MPU9150 from supported SPI devices as doesn't provide SPI.
  - Select I2C_MUX again after kbuild issue fixed elsewhere.
* stm32-timer
  - Drop an unnecessary register update.
* ssp_sensors
  - Convert to GPIO descriptors.
* st_sensors
  - drop !CONFIG_ACPI defines as ACPI_PTR() will stop them being used
    anyway.
  - Make default platform data structures __maybe_unsued.
  - Fill in some missing kernel-doc function parameters.
* st_lsm6dsx
  - white space fixes.
  - Mark some constants that aren't always used as __maybe_unused.
  - Drop of ID table guards as they just pervent use under ACPI.
  - Switch to device properties to allow ACPI usage.
* st_uvis25
  - Drop acpi.h include as no ACPI APIs used.
* ti-ads1015
  - Drop legacy platform data as no one seems to be using it.
  - Use the device property API instead of OF specific.
* ti-ads7950
  - typo fix in error message.

* tag 'iio-for-5.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (99 commits)
  iio: accel: bma180: BMA254 support
  iio: pressure: bmp280: Allow device to be enumerated from ACPI
  iio: pressure: bmp280: Drop ACPI support
  dt-bindings: iio: adc: convert sd modulator to json-schema
  iio: buffer: rename 'read_first_n' callback to 'read'
  iio: buffer-dmaengine: Report buffer length requirements
  bindings: iio: pressure: Add documentation for dlh driver
  dt-bindings: Add asc vendor
  iio: pressure: Add driver for DLH pressure sensors
  iio: buffer-dmaengine: Add module information
  iio: accel: bma180: Use explicit member assignment
  iio: accel: bma180: Basic regulator support
  iio: accel: bma180: Add dev helper variable
  iio: imu: st_lsm6dsx: enable sensor-hub support for lsm6dsm
  iio: imu: st_lsm6dsx: rename st_lsm6dsx_shub_read_reg in st_lsm6dsx_shub_read_output
  iio: imu: st_lsm6dsx: check if shub_output reg is located in primary page
  iio: imu: st_lsm6dsx: check if pull_up is located in primary page
  iio: imu: st_lsm6dsx: check if master_enable is located in primary page
  iio: imu: st_lsm6dsx: export max num of slave devices in st_lsm6dsx_shub_settings
  iio: light: remove unneeded semicolon
  ...
2020-01-10 10:44:00 +01:00
Lorenzo Bianconi
09a78f7dfa iio: humidity: hts221: move register definitions to sensor structs
Move some register definitions to hts221_avg_list, hts221_avg_list and
hts221_channels since they are used only there and simplify driver code

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-12-15 11:42:17 +00:00
Chris Lesiak
342a6928bd iio: humidity: hdc100x: fix IIO_HUMIDITYRELATIVE channel reporting
The IIO_HUMIDITYRELATIVE channel was being incorrectly reported back
as percent when it should have been milli percent. This is via an
incorrect scale value being returned to userspace.

Signed-off-by: Chris Lesiak <chris.lesiak@licor.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-12-08 18:10:29 +00:00
Alexandru Ardelean
9b58916035 iio: hdc100x: fix iio_triggered_buffer_{predisable,postenable} positions
The iio_triggered_buffer_postenable() hook should be called first to
attach the poll function and the iio_triggered_buffer_predisable() hook
should be called last in the predisable hook.

This change updates the driver to attach/detach the poll func in the
correct order.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-11-02 14:39:41 +00:00
Chuhong Yuan
23f1ce3c08 iio: humidity: Use device-managed APIs
Use device-managed APIs to simplify the code.
The remove functions are redundant now and can
be deleted.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27 22:52:06 +01:00
Linus Torvalds
e786741ff1 Staging / IIO driver update for 5.3-rc1
Here is the big Staging and IIO driver update for 5.3-rc1.
 
 Lots of new IIO drivers are in here, along with loads of tiny staging
 driver cleanups and fixes.  Overall we almost break even with the same
 lines added as removed.
 
 Full details are in the shortlog, they are too large to list here.
 
 All of these changes have been in linux-next for a while with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver updates from Greg KH:
 "Here is the big Staging and IIO driver update for 5.3-rc1.

  Lots of new IIO drivers are in here, along with loads of tiny staging
  driver cleanups and fixes. Overall we almost break even with the same
  lines added as removed.

  Full details are in the shortlog, they are too large to list here.

  All of these changes have been in linux-next for a while with no
  reported issues"

* tag 'staging-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (608 commits)
  staging: kpc2000: simplify comparison to NULL in fileops.c
  staging: kpc2000: simplify comparison to NULL in dma.c
  staging: kpc2000: simplify comparison to NULL in kpc2000_spi.c
  staging: rtl8723bs: hal: remove redundant assignment to packetType
  staging: rtl8723bs: Change return type of hal_btcoex_IsBtDisabled()
  staging: rtl8723bs: Remove rtw_btcoex_DisplayBtCoexInfo()
  staging: rtl8723bs: Remove function rtw_btcoex_GetDBG()
  staging: rtl8723bs: Remove function rtw_btcoex_SetDBG()
  staging: rtl8723bs: Remove rtw_btcoex_IsBTCoexCtrlAMPDUSize()
  staging: rtl8723bs: Remove rtw_btcoex_BtInfoNotify()
  staging: rtl8723bs: Remove rtw_btcoex_ScanNotify()
  staging: rtl8723bs: Remove rtw_btcoex_SetSingleAntPath()
  staging: rtl8723bs: Remove rtw_btcoex_SetPGAntNum()
  staging: rtl8192e: remove redundant initialization of rtstatus
  staging: rtl8723bs: Remove rtw_btcoex_GetRaMask()
  staging: rtl8723bs: Remove rtw_btcoex_SetChipType()
  staging: rtl8723bs: Remove rtw_btcoex_ConnectNotify()
  staging: rtl8723bs: Remove rtw_btcoex_SetBTCoexist()
  staging: rtl8723bs: Remove rtw_btcoex_IsBtDisabled()
  staging: rtl8723bs: Remove rtw_btcoex_IsBtControlLps()
  ...
2019-07-11 15:36:02 -07:00
Thomas Gleixner
3419240495 Merge branch 'timers/vdso' into timers/core
so the hyper-v clocksource update can be applied.
2019-07-03 10:50:21 +02:00
Greg Kroah-Hartman
c55cc97a25 Second set of IIO device support, features, cleanups and minor fixes for 5.3.
A few bits for the counters subsystem mixed in here as well.
 There are some late breaking fixes as well, which aren't so urgent
 they can't wait for the merge window.
 
 New Device Support
 * adf4371
   - New driver + bindings.
   - Support the adf4372 PLL. Mostly ID and bindings.
 * ad8366 (note includes rework of driver needed to allow support for these).
   - Support the ADL5240 variable gain amplifier (VGA).
   - Support the ADA4961 digital gain amplifier (DGA).
 * dps310
   - New driver, in several parts from different authors for this temp
     and pressure sensor.
   - Includes errata workaround for a temperature reading issue.
 * stk3310
   - Support the stk3335, mostly ID.
 
 Features and cleanups
 * core
   - drop error handling on debugfs registration.
   - harden by making sure we don't overrun iio_chan_info_postfix.
 * docs
   - convert remaining docs to rst. At somepoint we'll fit these few
     into the main IIO docs.
   - improve sampling_frequency_available docs but explaining the
     range form.
 * ad_sigma_delta
   - Drop a pointless goto.
 * ad2s1210
   - Drop pointless platform data null check seeing as we don't actually
     use platform data anymore.
 * ad7124
   - Relax limitation on channel numbers to allow pseudo different channels.
   - Support control of whether the input is buffered via DT.
   - Use dynamic allocation for channel configuration to make it easier
     to support new devices.
   - YAML binding conversion.
 * ad7150
   - Comment tidy up.
   - Consistent and simple if (ret) handling of i2c errors.
   - FIELD_GET and GENMASK.
   - Ternary rather than !!(condition) for readability.
   - Use macros to avoid repetition of channel definitions.
 * ad7606
   - Add software channel config (rather that pin controlled)
   - Refactor to simplify addition of new part in future.
 * ad7746
   - of_deivce_id table.
 * ad7780
   - MAINTAINERS entry
   - YAML DT bindings.
 * ad8366
   - Stop using core mlock in favour of well scoped local lock.
   - SPDX + copyright date update.
 * ad9834
   - of_device_id table
 * adf4371
   - Add support for output stage muting before lock on has occured.
 * adis library
   - MAINTAINERS entry to reflect that this now Alexandru's problem ;)
 * adis162xx:
   - Fix a slightly incorrect set of comments and print statements on
     minimum supported voltage.
 * adis16203
   - of_device_id table.
 * adis16240
   - Add of_device_id table (in two parts as first patch only used it for
     MODULE_DEVICE_TABLE.)
 * adt7316-spi
   - of_device_id table
 * adxl372
   - YAML DT binding conversion.
   - Cleanup use of buffer callback functions (precursor to core rework).
 * bh1710
   - Simplify getting the i2c adapter from the client.
 * dht11
   - Mote to newer GPIO consumer interface.
 * kxcjk-1013.c
   - Add binding for sensor in display of some ultrabooks after userspace
     tools updated for it not be a problem to report two similar sensors.
 * imx7d
   - drop unused variables.
   - white space
   - define instead of variable for clock frequency that is fixed.
   - drop pointless error message.
 * messon_saradc
   - SPDX
 * sps30
   - MAINTAINERS entry
   - YAML binding conversion.
 * st_accel
   - Tidy up ordering in various buffer related callbacks. This is
     part of a long running effort to simplify the core code.
 * stm32-dfsdm:
   - Manage the resolution cleanly in triggerd modes.
   - Add fast mode support which allows more flexible filter choices.
   - Add a comment on the reason for a 16 bit record when technically
     not 'required'.
 * st_lsm6dsx
   - Embed device name in the sensor_settings struct as i3c doesn't
     have a convenient name field to use for this.
 * xilinx-adc
   - Relax constraints on supported platforms to reflect that this
     can used with FPGAs on PCIe cards and hence many architectures.
 * counters/ftm-quaddec
   - Fix some formatting io MODULE_AUTHOR
   - MAINTAINERS entry
 
 Fixes
 * tools
   - fix incorrect handling of 32 bit channels.
 * sca3000
   - Potential endian bug that is unlikely to bite anyone (be64 host
     seems unlikely for this old part).
 * stm32-adc
   - Add vdda-supply. On some boards it needs to be turned on to supply
     the ADC.  DT bindings included.
 * stm32-dfsdm
   - Fix output resolution to work with filter orders other than 3.
   - Fix output datatype as it's signed and previously claimed not to be.
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Merge tag 'iio-for-5.3b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO device support, features, cleanups and minor fixes for 5.3.

A few bits for the counters subsystem mixed in here as well.
There are some late breaking fixes as well, which aren't so urgent
they can't wait for the merge window.

New Device Support
* adf4371
  - New driver + bindings.
  - Support the adf4372 PLL. Mostly ID and bindings.
* ad8366 (note includes rework of driver needed to allow support for these).
  - Support the ADL5240 variable gain amplifier (VGA).
  - Support the ADA4961 digital gain amplifier (DGA).
* dps310
  - New driver, in several parts from different authors for this temp
    and pressure sensor.
  - Includes errata workaround for a temperature reading issue.
* stk3310
  - Support the stk3335, mostly ID.

Features and cleanups
* core
  - drop error handling on debugfs registration.
  - harden by making sure we don't overrun iio_chan_info_postfix.
* docs
  - convert remaining docs to rst. At somepoint we'll fit these few
    into the main IIO docs.
  - improve sampling_frequency_available docs but explaining the
    range form.
* ad_sigma_delta
  - Drop a pointless goto.
* ad2s1210
  - Drop pointless platform data null check seeing as we don't actually
    use platform data anymore.
* ad7124
  - Relax limitation on channel numbers to allow pseudo different channels.
  - Support control of whether the input is buffered via DT.
  - Use dynamic allocation for channel configuration to make it easier
    to support new devices.
  - YAML binding conversion.
* ad7150
  - Comment tidy up.
  - Consistent and simple if (ret) handling of i2c errors.
  - FIELD_GET and GENMASK.
  - Ternary rather than !!(condition) for readability.
  - Use macros to avoid repetition of channel definitions.
* ad7606
  - Add software channel config (rather that pin controlled)
  - Refactor to simplify addition of new part in future.
* ad7746
  - of_deivce_id table.
* ad7780
  - MAINTAINERS entry
  - YAML DT bindings.
* ad8366
  - Stop using core mlock in favour of well scoped local lock.
  - SPDX + copyright date update.
* ad9834
  - of_device_id table
* adf4371
  - Add support for output stage muting before lock on has occured.
* adis library
  - MAINTAINERS entry to reflect that this now Alexandru's problem ;)
* adis162xx:
  - Fix a slightly incorrect set of comments and print statements on
    minimum supported voltage.
* adis16203
  - of_device_id table.
* adis16240
  - Add of_device_id table (in two parts as first patch only used it for
    MODULE_DEVICE_TABLE.)
* adt7316-spi
  - of_device_id table
* adxl372
  - YAML DT binding conversion.
  - Cleanup use of buffer callback functions (precursor to core rework).
* bh1710
  - Simplify getting the i2c adapter from the client.
* dht11
  - Mote to newer GPIO consumer interface.
* kxcjk-1013.c
  - Add binding for sensor in display of some ultrabooks after userspace
    tools updated for it not be a problem to report two similar sensors.
* imx7d
  - drop unused variables.
  - white space
  - define instead of variable for clock frequency that is fixed.
  - drop pointless error message.
* messon_saradc
  - SPDX
* sps30
  - MAINTAINERS entry
  - YAML binding conversion.
* st_accel
  - Tidy up ordering in various buffer related callbacks. This is
    part of a long running effort to simplify the core code.
* stm32-dfsdm:
  - Manage the resolution cleanly in triggerd modes.
  - Add fast mode support which allows more flexible filter choices.
  - Add a comment on the reason for a 16 bit record when technically
    not 'required'.
* st_lsm6dsx
  - Embed device name in the sensor_settings struct as i3c doesn't
    have a convenient name field to use for this.
* xilinx-adc
  - Relax constraints on supported platforms to reflect that this
    can used with FPGAs on PCIe cards and hence many architectures.
* counters/ftm-quaddec
  - Fix some formatting io MODULE_AUTHOR
  - MAINTAINERS entry

Fixes
* tools
  - fix incorrect handling of 32 bit channels.
* sca3000
  - Potential endian bug that is unlikely to bite anyone (be64 host
    seems unlikely for this old part).
* stm32-adc
  - Add vdda-supply. On some boards it needs to be turned on to supply
    the ADC.  DT bindings included.
* stm32-dfsdm
  - Fix output resolution to work with filter orders other than 3.
  - Fix output datatype as it's signed and previously claimed not to be.

* tag 'iio-for-5.3b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (68 commits)
  iio: iio-utils: Fix possible incorrect mask calculation
  iio: frequency: adf4371: Add support for output stage mute
  dt-bindings: iio: frequency: Add ADF4372 PLL documentation
  iio: frequency: adf4371: Add support for ADF4372 PLL
  dt-bindings: iio: adc: Add buffered input property
  Convert AD7124 bindings documentation to YAML format.
  iio: adc: ad7124: Shift to dynamic allocation for channel configuration
  iio: adc: ad7124: Add buffered input support
  iio: adc: ad7124: Remove input number limitation
  MAINTAINERS: add ADIS IMU driver library entry
  iio: adis162xx: fix low-power docs & reports
  counter/ftm-quaddec: Add missing '>' in MODULE_AUTHOR
  iio: core: no need to check return value of debugfs_create functions
  docs: iio: convert to ReST
  iio: adc: stm32-adc: add missing vdda-supply
  dt-bindings: iio: adc: stm32: add missing vdda supply
  iio: adc: stm32-dfsdm: add comment for 16 bits record
  iio: adc: stm32-dfsdm: add fast mode support
  iio: adc: stm32-dfsdm: manage data resolution in trigger mode
  iio: adc: stm32-dfsdm: fix data type
  ...
2019-07-01 10:58:13 +02:00
Jason A. Donenfeld
9285ec4c8b timekeeping: Use proper clock specifier names in functions
This makes boot uniformly boottime and tai uniformly clocktai, to
address the remaining oversights.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-2-Jason@zx2c4.com
2019-06-22 12:11:27 +02:00
Thomas Gleixner
4c3dd9cd76 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms and conditions of the gnu general public license
  version 2 as published by the free software foundation this program
  is distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 3 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081205.739216165@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:52 +02:00
Shobhit Kukreti
7e8b817e59 iio: humidity: Replace older GPIO APIs with GPIO Consumer APIs for the dht11 sensor
The dht11 driver uses a single gpio to make measurements. It was
using the older global gpio numberspace. The patch replaces the
old gpio api with the new gpio descriptor based api.

Removed header files "linux/gpio.h" and "linux/of_gpio.h"

Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Acked-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17 21:06:49 +01:00
Thomas Gleixner
36edc93958 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330
Based on 1 normalized pattern(s):

  this file is subject to the terms and conditions of version 2 of the
  gnu general public license see the file copying in the main
  directory of this archive for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 55 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.108941081@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:06 +02:00
Thomas Gleixner
f6cc69f1f3 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 309
Based on 2 normalized pattern(s):

  it and or modify it under the terms of the gnu general public
  license version 2 as published by the free software foundation this
  program is distributed in the hope it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program

  this program is free software you can redistribute it and or modify
  it under the terms and conditions of the gnu general public license
  version 2 as published by the free software foundation this program
  is distributed in the hope it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 11 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000434.249870634@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:04 +02:00
Thomas Gleixner
fda8d26e61 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177
Based on 1 normalized pattern(s):

  licensed under the gpl 2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 135 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170026.071193225@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:29:19 -07:00
Thomas Gleixner
c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Enrico Weigelt, metux IT consult
d626be00e8 drivers: iio: Kconfig: pedantic cleanup
Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:56 +01:00
Hans de Goede
0145b50566 iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers
Before this commit sensor_hub_input_attr_get_raw_value() failed to take
the signedness of 16 and 8 bit values into account, returning e.g.
65436 instead of -100 for the z-axis reading of an accelerometer.

This commit adds a new is_signed parameter to the function and makes all
callers pass the appropriate value for this.

While at it, this commit also fixes up some neighboring lines where
statements were needlessly split over 2 lines to improve readability.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 11:42:12 +00:00
Matt Ranostay
d6ad805844 iio: add SPDX identifier for various drivers
Add GPLv2+ SPDX identifier and update email for author's drivers.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-18 11:55:19 +00:00
Harald Geyer
a6bffb6920 iio: dht11: Improve detection of sensor type
The old code was based on a DHT11 datasheet which specifies a measurement
range of 20%-90% RH. Turns out the sensor actually reports values outside
this range, so we should support it as far as possible.

Reported-by: Edward Attfield <edward@attfield.ca>
Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17 12:03:16 +00:00
Lorenzo Bianconi
56154dac33 iio: humidity: hts221: remove unnecessary get_unaligned_le16()
Remove unnecessary unaligned access routine in hts221_read_oneshot() and
the related include

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30 18:33:19 +00:00
Lorenzo Bianconi
621779220b iio: humidity: hts221: add regmap API support
Introduce regmap API support to access to i2c/spi bus instead of
using a custom support.
Remove lock mutex since concurrency is already managed by regmap API

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30 18:33:18 +00:00
Lorenzo Bianconi
b62c4a96a6 iio: humidity: hts221: remove trailing whitespace from a comment
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30 18:33:16 +00:00
Lorenzo Bianconi
bf388e3a94 iio: humidity: hts221: remove warnings in hts221_parse_{temp,rh}_caldata()
Remove following sparse warnings in hts221_parse_temp_caldata() and in
hts221_parse_rh_caldata():
drivers/iio/humidity/hts221_core.c:302:19: warning: cast to
restricted __le16
drivers/iio/humidity/hts221_core.c:314:18: warning: cast to
restricted __le16
drivers/iio/humidity/hts221_core.c:320:18: warning: cast to
restricted __le16
drivers/iio/humidity/hts221_core.c:355:18: warning: cast to
restricted __le16
drivers/iio/humidity/hts221_core.c:361:18: warning: cast to
restricted __le16

Fixes: e4a70e3e7d ("iio: humidity: add support to hts221 rh/temp combo device")

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30 18:33:15 +00:00
Lorenzo Bianconi
e1ca114100 iio: humidity: hts221: move common code in hts221_core
Move duplicated i2c/spi probe code in hts221_probe()

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 16:03:43 +01:00
Linus Torvalds
449fcf3ab0 Staging/IIO patches for 4.15-rc1
Here is the "big" staging and IIO driver update for 4.15-rc1.
 
 Lots and lots of little changes, almost all minor code cleanups as the
 Outreachy application process happened during this development cycle.
 Also happened was a lot of IIO driver activity, and the typec USB code
 moving out of staging to drivers/usb (same commits are in the USB tree
 on a persistent branch to not cause merge issues.)
 
 Overall, it's a wash, I think we added a few hundred more lines than
 removed, but really only a few thousand were modified at all.
 
 All of these have been in linux-next for a while.  There might be a
 merge issue with Al's vfs tree in the pi433 driver (take his changes,
 they are always better), and the media tree with some of the odd atomisp
 cleanups (take the media tree's version).
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO updates from Greg KH:
 "Here is the "big" staging and IIO driver update for 4.15-rc1.

  Lots and lots of little changes, almost all minor code cleanups as the
  Outreachy application process happened during this development cycle.
  Also happened was a lot of IIO driver activity, and the typec USB code
  moving out of staging to drivers/usb (same commits are in the USB tree
  on a persistent branch to not cause merge issues.)

  Overall, it's a wash, I think we added a few hundred more lines than
  removed, but really only a few thousand were modified at all.

  All of these have been in linux-next for a while. There might be a
  merge issue with Al's vfs tree in the pi433 driver (take his changes,
  they are always better), and the media tree with some of the odd
  atomisp cleanups (take the media tree's version)"

* tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (507 commits)
  staging: lustre: add SPDX identifiers to all lustre files
  staging: greybus: Remove redundant license text
  staging: greybus: add SPDX identifiers to all greybus driver files
  staging: ccree: simplify ioread/iowrite
  staging: ccree: simplify registers access
  staging: ccree: simplify error handling logic
  staging: ccree: remove dead code
  staging: ccree: handle limiting of DMA masks
  staging: ccree: copy IV to DMAable memory
  staging: fbtft: remove redundant initialization of buf
  staging: sm750fb: Fix parameter mistake in poke32
  staging: wilc1000: Fix bssid buffer offset in Txq
  staging: fbtft: fb_ssd1331: fix mirrored display
  staging: android: Fix checkpatch.pl error
  staging: greybus: loopback: convert loopback to use generic async operations
  staging: greybus: operation: add private data with get/set accessors
  staging: greybus: loopback: Fix iteration count on async path
  staging: greybus: loopback: Hold per-connection mutex across operations
  staging: greybus/loopback: use ktime_get() for time intervals
  staging: fsl-dpaa2/eth: Extra headroom in RX buffers
  ...
2017-11-13 20:53:28 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Jonathan Cameron
13a8c6c2a1 iio:humidity: drop assign iio_info.driver_module and iio_trigger_ops.owner
The equivalent of both of these are now done via macro magic when
the relevant register calls are made.  The actual structure
elements will shortly go away.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-08-22 21:30:20 +01:00
Lorenzo Bianconi
f3f0ae16f0 iio: humidity: hts221: move drdy enable logic in hts221_trig_set_state()
Move data-ready configuration in hts221_buffer.c since it is only related
to trigger logic

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-25 20:03:04 +01:00
Lorenzo Bianconi
9251f7aaa5 iio: humidity: hts221: support open drain mode
Add open drain support in order to share requested IRQ line between
hts221 device and other peripherals

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-25 20:00:47 +01:00
Lorenzo Bianconi
e7b4b45e1e iio: humidity: hts221: support active-low interrupts
Add support for active low interrupts (IRQF_TRIGGER_LOW and
IRQF_TRIGGER_FALLING). Configure the device as active high or low
according to the requested irq line.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:21:46 +01:00
Lorenzo Bianconi
e3e25446a3 iio: humidity: hts221: squash hts221_power_on/off in hts221_set_enable
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:20:48 +01:00
Lorenzo Bianconi
ffebe74b7c iio: humidity: hts221: avoid useless ODR reconfiguration
Configure sensor ODR just in hts221_write_raw() in order to avoid
to set device sample rate multiple times.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:18:37 +01:00
Lorenzo Bianconi
f6f58d9d93 iio: humidity: hts221: do not overwrite reserved data during power-down
GENMASK(6, 3) in CTRL_REG1 and GENMASK(6, 2) in CTRL_REG2 are marked
reserved. Do not changed the original value (not declared in the
datasheet) during power-down/suspend routines.

Fixes: e4a70e3e7d (iio: humidity: add support to hts221 rh/temp device)
Fixes: b7079eeac5 (iio: humidity: hts221: add power management support)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:18:11 +01:00
Lorenzo Bianconi
2ede27402a iio: humidity: hts221: move BDU configuration in probe routine
Enable Block Data Update in hts221_probe() in order to avoid to reconfigure
it every time the sensor is enabled

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:18:08 +01:00
Lorenzo Bianconi
bd49302a73 iio: humidity: hts221: refactor write_with_mask code
Move bit-shift in hts221_write_with_mask() instead of coding
the shift depth in the configured value. That change will be necessary
to fix an issue in device power-down procedure.
Simplify hts221_avg_list table management

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-22 21:18:04 +01:00
Manivannan Sadhasivam
c43aaa2772 iio: humidity: htu21: Add OF match table
Add of_match_table for Measurement-Specialties htu21 temperature & humidity sensor and humidity part of MS8607 sensor

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-01 10:16:59 +01:00
Michael Stecklein
a2d80de873 iio: humidity: hdc100x: add match table and device id's
Add of_match_table and point it to a list of compatible device tree
device id's.

Signed-off-by: Michael Stecklein <m-stecklein@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-01 10:16:38 +01:00
Michael Stecklein
8f4c9575a8 iio: humidity: hdc100x: document compatible HDC10xx devices
Include datasheet links, add i2c_device_id entries, and update
kconfig help for compatible HDC10xx devices: HDC1000, HDC1008,
HDC1010, HDC1050, and HDC1080.

Signed-off-by: Michael Stecklein <m-stecklein@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-01 10:16:38 +01:00
Lorenzo Bianconi
b7079eeac5 iio: humidity: hts221: add power management support
Add system sleep power management support to hts221 driver

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-14 16:52:33 +01:00
simran singhal
7ae6df68d6 iio: humidity: hts221: Remove unnecessary cast on void pointer
The following Coccinelle script was used to detect this:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
  *((T *)e)
|
  ((T *)x)[...]
|
  ((T*)x)->f
|
- (T*)
  e
)

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-02 09:50:32 +01:00
simran singhal
757cff86a8 iio: humidity: hdc100x: constify attribute_group structures
Check for attribute_group structures that are only stored in the
attrs filed of iio_info structure. As the attrs field of iio_info
structures is constant, so these attribute_group structures can also be
declared constant.
Done using coccinelle:

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct attribute_group i@p = {...};

@ok1@
identifier r1.i;
position p;
struct iio_info x;
@@
x.attrs=&i@p;

@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct attribute_group i={...};

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct attribute_group i;

File size before:
   text	   data	    bss	    dec	    hex	filename
   3459	    488	      0	   3947	    f6b	drivers/iio/humidity/hdc100x.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   3507	    424	      0	   3931	    f5b	drivers/iio/humidity/hdc100x.o

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-01 11:37:06 +01:00
Song Hongyan
d7ed89d5aa iio: hid: Add humidity sensor support
Environmental humidity sensor is a hid defined sensor,
it shows raw humidity measurement of air.

More information can be found in:
http://www.usb.org/developers/hidpage/HUTRR39b.pdf

According to IIO ABI definition, humidityrelative data output unit is
milli percent. Add the unit convert from percent to milli percent.

Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-25 16:32:24 +00:00
Greg Kroah-Hartman
a769f30c7b Merge 4.10-rc7 into staging-next
This resolves the merge errors that were reported in linux-next and it
picks up the staging and IIO fixes that we need/want in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-06 09:36:10 +01:00
John Brooks
5c113b5e00 iio: dht11: Use usleep_range instead of msleep for start signal
The DHT22 (AM2302) datasheet specifies that the LOW start pulse should not
exceed 20ms. However, observations with an oscilloscope of an RPi Model 2B
(rev 1.1) communicating with a DHT22 sensor showed that the driver was
consistently sending start pulses longer than 20ms:

Kernel 4.7.10-v7+ (n=132):
    Minimum pulse length: 20.20ms
    Maximum:              29.84ms
    Mean:                 24.96ms
    StDev:                2.82ms
    Sensor response rate: 100%
    Read success rate:    76%

On kernel 4.8, the start pulse was so long that the sensor would not even
respond 97% of the time:

Kernel 4.8.16-v7+ (n=100):
    Minimum pulse length: 30.4ms
    Maximum:              74.4ms
    Mean:                 39.3ms
    StDev:                10.2ms
    Sensor response rate: 3%
    Read success rate:    3%

The driver would return ETIMEDOUT and write log messages like this:

[   51.430987] dht11 dht11@0: Only 1 signal edges detected
[   66.311019] dht11 dht11@0: Only 0 signal edges detected

Replacing msleep(18) with usleep_range(18000, 20000) made the pulse length
sane again and restored responsiveness:

Kernel 4.8.16-v7+ with usleep_range (n=123):
    Minimum pulse length: 18.16ms
    Maximum:              20.20ms
    Mean:                 19.85ms
    StDev:                0.51ms
    Sensor response rate: 100%
    Read success rate:    84%

Cc: stable@vger.kernel.org
Signed-off-by: John Brooks <john@fastquake.com>
Reviewed-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-22 13:35:40 +00:00
Shrirang Bagul
25fc503e2d iio: humidity: Support acpi probe for hts211
Support driver probe by reading unique HID on systems based on ACPI instead
of DT compatible strings.

Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-12-03 08:56:28 +00:00
Paul Kocialkowski
b0d8019854 iio: si7020: Add devicetree support and trivial bindings
This adds devicetree support for the si7020 iio driver. Since it works
well without requiring any additional property, its compatible string is
added to the trivial i2c devices bindings list.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-01 18:49:53 +00:00
Wei Yongjun
d1c6753412 iio: humidity: remove duplicated include from hts221_buffer.c
Remove duplicated include.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-01 18:43:46 +00:00
Alison Schofield
16bf793f86 iio: humidity: hdc100x: add triggered buffer support for HDC100X
Triggered buffer support uses the HDC100X's dual acquisition mode
to read both humidity and temperature in one shot.

This patch depends on
	447136effbf4 ("iio: humidity: hdc100x: fix sensor data reads of
		       temp and humidity")

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-10-23 19:34:25 +01:00
Lorenzo Bianconi
e4a70e3e7d iio: humidity: add support to hts221 rh/temp combo device
Add support to STM HTS221 humidity + temperature sensor

http://www.st.com/resource/en/datasheet/hts221.pdf

- continuous mode support
- i2c support
- spi support
- trigger mode support

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-10-23 19:34:09 +01:00
Greg Kroah-Hartman
9c2edd8b5b Merge 4.8-rc5 into staging-next
We want the staging fixes in here as well to handle merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-05 08:13:24 +02:00
Alison Schofield
ca1902ff98 iio: humidity: hdc100x: add HDC1000 and HDC1008 to Kconfig
hdc100x supports Texas Instruments HDC1000 and HDC1008 relative
humidity and temperature sensors. Add these product names to
Kconfig.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 17:10:56 +01:00
Alison Schofield
0d9dcf8523 iio: humidity: hdc100x: fix sensor data reads of temp and humidity
Replace the i2c_smbus_read_byte commmands used to retrieve the sensor
data with an i2c_master_recv command.

The smbus read byte method fails because the device does not expect a
stop condition after sending the first byte. When we issue the second
read, we are getting the first byte again. Net effect is that of the 14
bits used for the measurement, the 8 most significant bits are correct,
the lower 6 are not.

None of the smbus read protocols follow the pattern this device requires
(S Addr Rd [A] Data [A] Data NA P), hence the switch to an i2c receive
transaction.

Applicable from original introduction of this driver, but will require
backporting due to churn in the code.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 17:01:53 +01:00
Alison Schofield
193e2d4fd9 iio: add Kconfig selects needed for triggered buffer compiles
Select IIO_BUFFER and IIO_TRIGGERED_BUFFER to compile.
Remove IIO_TRIGGER if present since IIO_BUFFER selects it.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 15:42:04 +01:00
Alison Schofield
3c68858df7 iio: humidity: am2315: set up buffer timestamps for non-zero values
Use the iio_pollfunc_store_time parameter during triggered buffer
set-up to get valid timestamps.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Reviewed-By: Tiberiu Breana <tiberiu.a.breana@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 15:39:23 +01:00
Greg Kroah-Hartman
af52739b92 Merge 4.7-rc4 into staging-next
We want the fixes in here, and we can resolve a merge issue in
drivers/iio/industrialio-trigger.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-20 08:25:44 -07:00
Matt Ranostay
94bef000f1 iio: hudmidity: hdc100x: fix incorrect shifting and scaling
Shifting sensor data to the right 2 bits was incorrect and caused the
scaling values + offsets to be invalid.

Reported-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Tested-by: Alison Schofield <amsfield22@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-03 13:25:33 +01:00
Matt Ranostay
09bc0ddaab iio: humidity: hdc100x: fix IIO_TEMP channel reporting
IIO_TEMP channel was being incorrectly reported back as Celsius when it
should have been milliCelsius. This is via an incorrect scale value being
returned to userspace.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-29 19:45:54 +01:00
Javier Martinez Canillas
cdd469ad9e iio: Export I2C module alias information
The I2C drivers have an i2c_device_id array but that information isn't
exported to the modules using the MODULE_DEVICE_TABLE() macro. So the
modules autoloading won't work if the I2C device is registered using
OF or legacy board files due missing alias information in the modules.

The issue was found using Kieran Bingham's coccinelle semantic patch:
https://lkml.org/lkml/2016/5/10/520

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-21 20:08:14 +01:00
Dan Carpenter
1cb0d06a00 iio: humidity: am2315: Remove a stray unlock
We haven't taken the lock yet so we don't need to unlock here.

Fixes: 0d96d5ead3 ('iio: humidity: Add triggered buffer support for AM2315')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-21 17:47:14 +01:00
Alison Schofield
0e35cf5ce0 iio: humidity: hdc100x: correct humidity integration time mask
Apply the correct mask to enable all available humidity integration
times.  Currently, the driver defaults to 6500 and all is okay with that.
However, if 3850 is selected we get a stuck bit and can't change back
to 6500 or select 2500.  (Verified with HDC1008)

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Reviewed-by: Matt Ranostay <mranostay@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-21 17:23:32 +01:00
Tiberiu Breana
0d96d5ead3 iio: humidity: Add triggered buffer support for AM2315
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:00:20 +01:00
Tiberiu Breana
366a3270c1 iio: humidity: Add support for AM2315
Add basic support for the Aosong AM2315 relative humidity
and ambient temperature sensor.
Includes support for raw readings and ACPI detection.

Datasheet:
http://www.aosong.com/asp_bin/Products/en/AM2315.pdf

Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 09:56:07 +01:00
Harald Geyer
ab4b6496a2 iio: dht11: Improve logging
* Unify log messages
* Add more DEBUG messages

Apparently this driver is working unreliably on some platforms that I can't
test. Therefore I want an easy way for bug reporters to provide useful
information without making the driver too chatty by default.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-10 17:40:06 +01:00
Matt Ranostay
f8d9d3b434 iio: convert to common i2c_check_functionality() return value
Previously most drivers that used a i2c_check_functionality() check
condition required various error codes on failure. This patchset
converts to a standard of -EOPNOTSUPP

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-27 17:17:43 +00:00
Greg Kroah-Hartman
5ba907a949 Merge 4.5-rc3 into staging-next
We want the upstream staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07 17:34:04 -08:00
Abhilash Jindal
17a2f46c3d iio: dht11: Use boottime
Wall time obtained from ktime_get_real_ns is susceptible to sudden jumps due to
user setting the time or due to NTP.  Boot time is constantly increasing time
better suited for comparing two timestamps.

Signed-off-by: Abhilash Jindal <klock.android@gmail.com>
Reviewed-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-01 20:16:13 +00:00
Cristina Moraru
920dad0ce3 iio: si7020: add support for Hoperf th06
This patch adds support for Hoperf th06 humidity and
temperature sensor as it uses same register definitions
as si7020

th06 Datasheet: http://www.hoperf.com/upload/sensor/TH06.pdf

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:27:15 +00:00
Cristina Moraru
3f4202652e iio: si7005: add support for Hoperf th02
This patch adds support for Hoperf th02 humidity and
temperature sensor as it uses same register definitions
as si7005

th02 Datasheet: http://www.anglia-live.com/netalogue/pdfs/hrf/datasheets/TH02_V1.1.pdf

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:27:15 +00:00
Harald Geyer
155a57593d iio: dht11: Simplify decoding algorithm
The new algorithm uses a 'one size fits em all' threshold, which should
be easier to understand and debug. I believe there are no regressions
compared to the old adaptive threshold algorithm. I don't remember why
I chose the old algorithm when I initially wrote the driver.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:27:13 +00:00
Harald Geyer
22acc120a1 iio: dht11: Improve reliability - be more tolerant about missing start bits
Instead of guessing where the data starts, we now just try to decode from
every possible start position. This causes no additional overhead if we
properly received the full preamble and only costs a few extra CPU cycles
in the case where the preamble is corrupted. This is much more efficient
than to return an error to userspace and start over again.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:27:13 +00:00
Greg Kroah-Hartman
819db468b2 First set of IIO fixes for the 4.4 cycle.
This set does not include those for issues introduced during the merge
 window.  Fixes of those will follow in a future series.
 
 * ad5064
   - Make sure the local i2c_write returns 0 on success rather than the
     number of bytes transfered.  Otherwise we report an error on all writes.
   - Fix a shift for ad5629 and ad5669 which gives incorrect DAC output on
     these parts.
 * ad7793
   - The product ID on the datasheet is wrong.  Fix it in the driver.
 * IIO_DUMMY_EVGEN
   - select IRQ_WORK as a dependency.
 * lpc32xx
   - make sure clock is prepared before enabling.
 * si7020
   - data byte order was reversed. Fix it.
 * vf610
   - Internal temperature calculation was wrong if a different
     reference voltage was used.  Now use a linear interpolation
     function to make it work over the full range.
   - Fix a division by zero in the case of a device tree property
     not being present (same issue two fixes).
 * xilinx XADC
   - VREFN scale was wrong - fix it.
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Merge tag 'iio-fixes-for-4.4a' of ssh://ra.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 4.4 cycle.

This set does not include those for issues introduced during the merge
window.  Fixes of those will follow in a future series.

* ad5064
  - Make sure the local i2c_write returns 0 on success rather than the
    number of bytes transfered.  Otherwise we report an error on all writes.
  - Fix a shift for ad5629 and ad5669 which gives incorrect DAC output on
    these parts.
* ad7793
  - The product ID on the datasheet is wrong.  Fix it in the driver.
* IIO_DUMMY_EVGEN
  - select IRQ_WORK as a dependency.
* lpc32xx
  - make sure clock is prepared before enabling.
* si7020
  - data byte order was reversed. Fix it.
* vf610
  - Internal temperature calculation was wrong if a different
    reference voltage was used.  Now use a linear interpolation
    function to make it work over the full range.
  - Fix a division by zero in the case of a device tree property
    not being present (same issue two fixes).
* xilinx XADC
  - VREFN scale was wrong - fix it.
2015-11-18 13:15:50 -08:00
Chris Lesiak
0d2f6fd3ff iio: si7020: Swap data byte order
The Silicon Labs Si7013, Si7020, and Si7021 family of I2C humidity and
temperature sensors deliver 16 bit data high byte first.

See the datasheet available at:
https://www.silabs.com/Support%20Documents%2fTechnicalDocs%2fSi7020-A20.pdf

But as documented in Documentation/i2c/smbus-protocol,
i2c_smbus_read_word_data() expects the low byte first.

Change the driver to use i2c_smbus_read_word_swapped to get correct byte
order.

Signed-off-by: Chris Lesiak <chris.lesiak@licor.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-11-15 12:36:19 +00:00
Matt Ranostay
d3a21ce0c6 iio: hdc100x: correct IIO_CHAN_INFO_OFFSET value
Previous offset wasn't applied in the correct order and invalid.
This patchset fixes this issue, and also has the correct scale value
applied to the offset.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-11 13:53:20 +01:00
Ludovic Tancerel
1b75ce6587 Add ms8607 meas-spec driver support
Support for MS8607 temperature, pressure & humidity sensor.
This part is using functions from MS5637 for temperature and pressure
and HTU21 for humidity

Signed-off-by: Ludovic Tancerel <ludovic.tancerel@maplehightech.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-11 10:21:21 +01:00
Ludovic Tancerel
2b5c53d2c9 Add htu21 meas-spec driver support
Support for HTU21 temperature & humidity sensor

Signed-off-by: Ludovic Tancerel <ludovic.tancerel@maplehightech.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-11 10:21:20 +01:00
Matt Ranostay
4839367d99 iio: humidity: add HDC100x support
Add support for the HDC100x temperature and humidity sensors
including the resistive heater element.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-23 20:23:19 +01:00
Nicola Corna
ecf7e207a5 iio: humidity: si7020: replaced bitmask on humidity values with range check
The maximum possible value for the relative humidity is 55575 (100%RH).
This value, if shifted right by 2 bits, uses 14 bits and masking it with
a 12 bit mask removes 2 meaningful bits.
The masking has been replaced with a range check that sets the minimum
value at 786 (0%RH) and the maximum at 13893 (99.998%RH).

Signed-off-by: Nicola Corna <nicola@corna.info>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-24 19:41:16 +01:00
Harald Geyer
081d974031 iio: dht11: Use new function ktime_get_resolution_ns()
This cleans up the most ugly workaround in this driver. There are no
functional changes yet in the decoding algorithm, but we improve the
following things:
 * Get rid of spurious warning messages on systems with fast HRTIMER.
 * If the clock is not fast enough for decoding to work, we give
   up immediately.
 * In that case we return EAGAIN instead of EIO, so it's easier to
   discriminate causes of failure.

Returning EAGAIN is somewhat controversial: It's technically correct
as a faster clock might become available. OTOH once all clocks are
enabled this is a permanent error. There is no ECLOCKTOOSLOW error
code.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-20 18:41:20 +01:00
Harald Geyer
5fbb0bc466 iio: dht11: avoid multiple assignments to make checkpatch.pl --strict happy
We just do the assignments in two steps.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-20 18:41:19 +01:00
Harald Geyer
a7126003b6 iio: dht11: add comment to make checkpatch.pl --strict happy
Explain why the driver needs a mutex.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-20 18:41:18 +01:00
Harald Geyer
889c5e9b66 iio: dht11: whitespace changes to make checkpatch.pl --strict happy
* add spaces around binary operators in cases where it reduces readability
* align multiline statements around opening parenthesis

Reported-by: Hartmut Knaack <knaack.h@gmx.de>
	in Message-ID: <55919E72.3010807@gmx.de>

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-20 18:41:17 +01:00
Krzysztof Kozlowski
2155971a66 iio: Drop owner assignment from i2c_driver
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-11 18:50:07 +01:00
Geert Uytterhoeven
8493585317 iio: Allow compile test of GPIO consumers if !GPIOLIB
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-05-10 20:31:43 +01:00
Andrey Smirnov
e01becbad3 IIO: si7020: Allocate correct amount of memory in devm_iio_device_alloc
Since only a pointer to struct i2c_client is stored in a private area
of IIO device created by the driver there's no need to allocate
sizeof(struct i2c_client) worth of storage.

Pushed to stable as this is linked to the revert patch previously.
Without this followup the original patch looks sensible.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-02-14 11:35:12 +00:00
Jonathan Cameron
e765537add Revert "iio:humidity:si7020: fix pointer to i2c client"
This reverts commit e0922e5e3c.
Requested by Andrey Smirnov.

It incorrectly assumes that the level of indirection is not needed
which is not true(probably because the driver incorrectly allocates
sizeof(*client) instead of sizeof(*data) via devm_iio_device_alloc).
If you look at the code of the probe function(see below) it is easy to
see that what is being stored in the private memory of the IIO device
instance is not a copy of a 'struct i2c_client' but a pointer to an
instance passed as an argument to the probe function.

struct i2c_client **data;
int ret;

< Some code skipped >

indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*client));
if (!indio_dev)
return -ENOMEM;

data = iio_priv(indio_dev);
*data = client;

Without reverting this change any read of a raw value of this sensor
leads to a kernel oops due to a NULL pointer de-reference on my
hardware setup.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2015-02-14 11:32:17 +00:00
Richard Weinberger
94e65519ab iio: dht11: IRQ fixes
Since setting irq-enabled GPIOs into output state is not supported
by all GPIO controllers, we need to disable the irq while requesting
sensor data. As side effect we lose a tiny bit of functionality:
Some wiring problems can't be concluded from log messages anymore.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-10 11:16:32 +00:00
Richard Weinberger
004bc53034 iio: dht11: Add locking
Make sure that the read function is not interrupted...

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Harald Geyer <harald@ccbib.org>
Reviewed-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-10 11:14:53 +00:00
Richard Weinberger
ddc25bdd2b iio: dht11: Fix out-of-bounds read
As we access i-1 we must not start with i=0.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Harald Geyer <harald@ccbib.org>
Reviewed-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-10 11:13:35 +00:00
Hartmut Knaack
e0922e5e3c iio:humidity:si7020: fix pointer to i2c client
In si7020_read_raw() the pointer to the i2c client was obtained as second level
pointer, although a simple pointer is appropriate.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-25 20:55:56 +01:00
Hartmut Knaack
345b48307d iio:humidity:si7020: cleanup read_raw and probe
When reading temperature or humidity values, a shift of two bits to the right
needs to be applied, and only for the humidity channel a mask of the lower
12 bits needs to be applied. This reduces code repetition.
During probe, i2c_set_clientdata() was used, although its counterpart was not,
so drop it.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-25 20:55:56 +01:00
David Barksdale
064a74637c IIO: add si7020 driver
This patch adds support to the Industrial IO subsystem
for the Silicon Labs Si7013/20/21 Relative Humidity and
Temperature Sensors.

Website: http://www.silabs.com/products/sensors/humidity-sensors/Pages/si7013-20-21.aspx

These are i2c devices which measure relative humidity
and temperature and all use the same protocol. The
Si7013 has an additional input with programmable
linearization which is not supported because that's
complicated and I didn't need it.

Signed-off-by: David Barksdale <dbarksdale@uplogix.com>

--
Changes since v1:
* Renamed to si7020 and replaced Si701x/2x with Si7013/20/21.
* Removed unneeded mutex.
* Pre-computed floating-point constant expressions.
* Removed address_list and I2C_CLASS_HWMON.

Changes since v2:
* Return correct raw sensor values.
* Rename dev variable to indio_dev.
* Issue a software reset command during probe.
* Un-broke string literal.

Changes since v3:
* enum changed to #define
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04 12:43:30 +01:00
Sanjeev Sharma
81816affea iio: remove .owner field for driver using module_platform_driver
This patch removes the .owner field for drivers which use the
platform_driver_register api because this is overriden in
_platform_driver_register.

Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-26 21:08:38 +01:00
Peter Meerwald
049973b23a iio: Add si7005 relative humidity and temperature sensor driver
sensor provides 12-bit relative humidity and 14-bit temperature
via I2C interface; temperature and linearity compensation is not
implemented (yet)

driver also supports the Si7015, but not the 2nd generation
sensors Si7013/Si7020/Si7021

datasheet is here
http://www.silabs.com/Support%20Documents/TechnicalDocs/Si7005.pdf

v2: (thanks to Lars-Peter Clausen)
* fix coding style
* use devm_iio_device_register()
* change copyright year to 2014

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-01-11 11:12:44 +00:00
Harald Geyer
091a121b04 iio: Add new driver dht11
This driver handles DHT11 and DHT22 sensors.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-12-03 20:22:30 +00:00