Jonathan writes:

First round of IIO fixes for the 4.14 cycle

Note this includes fixes from recent merge window.  As such the tree
is based on top of a prior staging/staging-next tree.

* iio core
  - return and error for a failed read_reg debugfs call rather than
    eating the error.
* ad7192
  - Use the dedicated reset function in the ad_sigma_delta library
    instead of an spi transfer with the data on the stack which
    could cause problems with DMA.
* ad7793
  - Implement a dedicate reset function in the ad_sigma_delta library
    and use it to correctly reset this part.
* bme280
  - ctrl_reg write must occur after any register writes
  for updates to take effect.
* mcp320x
  - negative voltage readout was broken.
  - Fix an oops on module unload due to spi_set_drvdata not being called
    in probe.
* st_magn
  - Fix the data ready line configuration for the lis3mdl. It is not
    configurable so the st_magn core was assuming it didn't exist
    and so wasn't consuming interrupts resulting in an unhandled
    interrupt.
* stm32-adc
  - off by one error on max channels checking.
* stm32-timer
  - preset should not be buffered - reorganising register writes avoids
  this.
  - fix a corner case in which write preset goes wrong when a timer is
  used first as a trigger then as a counter with preset. Odd case but
  you never know.
* ti-ads1015
  - Fix setting of comparator polarity by fixing bitfield definition.
* twl4030
  - Error path handling fix to cleanup in event of regulator
    registration failure.
  - Disable the vusb3v1 regulator correctly in error handling
  - Don't paper over a regulator enable failure.

Since most of the SD ADCs have the option of reseting the serial
interface by sending a number of SCLKs with CS = 0 and DIN = 1,
a dedicated function that can do this is usefull.

Needed for the patch:  iio: ad7793: Fix the serial interface reset
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Pull MFD updates from Lee Jones:
 "New Drivers
   - RK805 Power Management IC (PMIC)
   - ROHM BD9571MWV-M MFD Power Management IC (PMIC)
   - Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs

  New Device Support:
   - Add support for HiSilicon Hi6421v530 to hi6421-pmic-core
   - Add support for X-Powers AXP806 to axp20x
   - Add support for X-Powers AXP813 to axp20x
   - Add support for Intel Sunrise Point LPSS to intel-lpss-pci

  New Functionality:
   - Amend API to provide register layout; atmel-smc

  Fix-ups:
   - DT re-work; omap, nokia
   - Header file location change {I2C => MFD}; dm355evm_msp, tps65010
   - Fix chip ID formatting issue(s); rk808
   - Optionally register touchscreen devices; da9052-core
   - Documentation improvements; twl-core
   - Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi
   - Drop unnecessary static declaration; max8925-i2c
   - Kconfig changes (missing deps and remove module support)
   - Slim down oversized licence statement; hi6421-pmic-core
   - Use managed resources (devm_*); lp87565
   - Supply proper error checking/handling; t7l66xb

  Bug Fixes:
   - Fix counter duplication issue; da9052-core
   - Fix potential NULL deference issue; max8998
   - Leave SPI-NOR write-protection bit alone; lpc_ich
   - Ensure device is put into reset during suspend; intel-lpss
   - Correct register offset variable size; omap-usb-tll"

* tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (61 commits)
  mfd: intel_soc_pmic: Differentiate between Bay and Cherry Trail CRC variants
  mfd: intel_soc_pmic: Export separate mfd-cell configs for BYT and CHT
  dt-bindings: mfd: Add bindings for ZII RAVE devices
  mfd: omap-usb-tll: Fix register offsets
  mfd: da9052: Constify spi_device_id
  mfd: intel-lpss: Put I2C and SPI controllers into reset state on suspend
  mfd: da9055: Constify i2c_device_id
  mfd: intel-lpss: Add missing PCI ID for Intel Sunrise Point LPSS devices
  mfd: t7l66xb: Handle return value of clk_prepare_enable
  mfd: Add ROHM BD9571MWV-M PMIC DT bindings
  mfd: intel_soc_pmic_chtwc: Turn Kconfig option into a bool
  mfd: lp87565: Convert to use devm_mfd_add_devices()
  mfd: Add support for TPS68470 device
  mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Haswell/Broadwell
  mfd: syscon: atmel-smc: Add helper to retrieve register layout
  mfd: axp20x: Use correct platform device ID for many PEK
  dt-bindings: mfd: axp20x: Introduce bindings for AXP813
  mfd: axp20x: Add support for AXP813 PMIC
  dt-bindings: mfd: axp20x: Add AXP806 to supported list of chips
  mfd: Add ROHM BD9571MWV-M MFD PMIC driver
  ...

Add support for LPTIMx_OUT triggers that can be found on some STM32
devices. These triggers can be used then by ADC or DAC.
Typical usage is to configure LPTimer as PWM output (via pwm-stm32-lp)
and have synchronised analog conversions with these triggers.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

We want the staging and iio fixes in here to handle the merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Jonathan writes:

Second set of IIO new device support, features and cleanup for the 4.14 cycle.

New device support:
* ak8974
  - support the AMI306.
* st_magnetometer
  - add support for the LIS2MDL with bindings.
* rockchip-saradc
  - add binding for rv1108 SoC (no driver change).
* srf08
  - add srf02 (i2c only) and srf10 support.
* stm32-timer
  - support for the STM32H7 to existing driver.

Features:
* tools
  - move over to the tools buildsystem rather than hand rolling.
  - add an install section to the build.
* ak8974
  - use serial number to add device randomness.
  - add AMI306 calibration data output.
* ccs811
  - triggered buffer support.
* srf08
  - add a device tree table as the old style i2c probing is going away,
  - add triggered buffer support
* st32-adc
  - add optional st,min-sample-time-nsecs binding to allow control of
    sampling against analog circuitry.
* stm32-timer
  - add output compare triggers.
* ti-ads1015
  - add threshold event support.
* ti-ads7950
  - Allow use on ACPI platforms including providing a default reference
    voltage as there is no way to obtain this on ACPI currently.

Cleanup and fixes:
* ad7606
  - fix an error return code in probe.
* ads1015
  - fix incorrect data rate setting update when capture in progress,
  - fix wrong scale information for the ADS1115,
  - make conversions work when CONFIG_PM is not set,
  - make sure we don't get a stale result after a runtime resume by
    ensuring we wait long enough,
  - avoid returning a false error form the buffer setup callbacks,
  - add enough wait time to get the correct conversion,
  - remove an unnecessary config register update,
  - add a helper to set conversion mode reducing repeated boilerplate,
  - use devm_iio_triggered_buffer_setup to simplify error and remove
    paths,
  - use iio_device_claim_direct_mode instead of opencoding the same.
* ak8974
  - mark the INT_CLEAR register as precious to prevent debugfs access.
* apds9300
  - constify the i2c_device_id.
* at91-sama5 adc
  - add missing Kconfig dependency.
* bma180 accel
  - constify the i2c_device_id.
* rockchip_saradc
  - explicitly request exclusive reset control as part of the reset rework
    on going throughout the kernel.
* st_accel
  - fix drdy configuration for a load of accelerometers that only have
    the int1 line.  Fix is unimportant as presumably no deviec tree actually
    used the non existent hardware line.
* st_pressure
  - fix drdy configuration for LPS22HB and LPS25H by dropping int2 support
    as they don't have this. Fix is unimportant as presumably no device tree
    actually used the non existent hardware line.
* stm32-dac
  - explicitly request exclusive reset control (part of reset being reworked).
* tsl2583
  - constify the i2c_device_id.
* xadc
  - coding style fixes.

The kerneldoc description for the trig_readonly field of struct iio_dev
lacked a colon, leading to this doc build warning:

  ./include/linux/iio/iio.h:603: warning: No description found for parameter 'trig_readonly'

A similar issue for iio_trigger_set_immutable() in trigger.h yielded:

  ./include/linux/iio/trigger.h:151: warning: No description found for parameter 'indio_dev'
  ./include/linux/iio/trigger.h:151: warning: No description found for parameter 'trig'

Fix the formatting and silence the warnings.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

We need it here for iio fixes.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add output compare trigger sources available on some instances.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Add support for STM32H7 timer triggers:
- Add new valids_table
- Introduce compatible, with configuration data
- Extend up to 15 timers, available on STM32H7

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>