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Linus Torvalds 2209a3055d Staging/IIO driver fixes for 5.2-rc3
Here are some Staging and IIO driver fixes to resolve some reported
 problems for 5.2-rc3.
 
 Nothing major here, just some tiny changes, full details are in the
 shortlog.
 
 All 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-5.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver fixes from Greg KH:
 "Here are some Staging and IIO driver fixes to resolve some reported
  problems for 5.2-rc3.

  Nothing major here, just some tiny changes, full details are in the
  shortlog.

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

* tag 'staging-5.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: kpc2000: Add dependency on MFD_CORE to kconfig symbol 'KPC2000'
  staging: wilc1000: Fix some double unlock bugs in wilc_wlan_cleanup()
  staging: vc04_services: prevent integer overflow in create_pagelist()
  Staging: vc04_services: Fix a couple error codes
  staging: wlan-ng: fix adapter initialization failure
  staging: kpc2000: double unlock in error handling in kpc_dma_transfer()
  staging: kpc2000: Fix build error without CONFIG_UIO
  staging: kpc2000: fix build error on xtensa
  staging: erofs: set sb->s_root to NULL when failing from __getname()
  iio: adc: ti-ads8688: fix timestamp is not updated in buffer
  iio: dac: ds4422/ds4424 fix chip verification
  iio: imu: mpu6050: Fix FIFO layout for ICM20602
  iio: adc: ads124: avoid buffer overflow
  iio: adc: modify NPCM ADC read reference voltage
2019-05-31 08:31:45 -07:00
Thomas Gleixner 9952f6918d treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
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 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 if not see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 228 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:29:52 -07:00
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 1802d0beec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
Based on 1 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 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 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -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
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  the free software foundation either version 2 of the license or at
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  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

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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 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 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 you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Thomas Gleixner 80503b23b2 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149
Based on 1 normalized pattern(s):

  licensed under the gpl 2 or later

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 82 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190524100845.150836982@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:25:18 -07:00
Crt Mori 389fc70b60 iio: temperature: mlx90632 Relax the compatibility check
Register EE_VERSION contains mixture of calibration information and DSP
version. So far, because calibrations were definite, the driver
compatibility depended on whole contents, but in the newer production
process the calibration part changes. Because of that, value in EE_VERSION
will be changed and to avoid that calibration value is same as DSP version
the MSB in calibration part was fixed to 1.
That means existing calibrations (medical and consumer) will now have
hex values (bits 8 to 15) of 83 and 84 respectively. Driver compatibility
should be based only on DSP version part of the EE_VERSION (bits 0 to 7)
register.

Signed-off-by: Crt Mori <cmo@melexis.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-27 10:52:30 +01:00
Lorenzo Bianconi bce0d57db3 iio: imu: st_lsm6dsx: fix PM support for st_lsm6dsx i2c controller
Properly suspend/resume i2c slaves connected to st_lsm6dsx master
controller if the CPU goes in suspended state

Fixes: c91c1c844e ("imu: st_lsm6dsx: add i2c embedded controller support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-27 10:52:30 +01:00
Christopher Bostic cc8baffe17 iio: dps310: Temperature measurement errata
Add a manufacturer's suggested workaround to deal with early revisions
of chip that don't indicate correct temperature. Readings can be in the
~60C range when they should be in the ~20's.

Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-27 10:51:58 +01:00
Joel Stanley ba6ec48e76 iio: Add driver for Infineon DPS310
The DPS310 is a temperature and pressure sensor. It can be accessed over
i2c and SPI, but this driver only supports polling over i2c.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-27 10:51:58 +01:00
Thomas Gleixner c51cb3f554 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 71
Based on 1 normalized pattern(s):

  licensed under the gplv2 or later

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 5 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071859.659568621@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:47 +02:00
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
Based on 1 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 you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00
Thomas Gleixner 1ccea77e2a treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
Based on 2 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 you
  should have received a copy of the gnu general public license along
  with this program if not see http www gnu org licenses

  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 [based]
  [from] [clk] [highbank] [c] you should have received a copy of the
  gnu general public license along with this program if not see http
  www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 355 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:45 +02:00
Thomas Gleixner 1621633323 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
Based on 2 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 you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  51 franklin street fifth floor boston ma 02110 1301 usa

  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 [no]_[pad]_[ctrl] 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 you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 51 franklin street fifth floor boston ma
  02110 1301 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 176 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:39 +02:00
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
Thomas Gleixner 09c434b8a0 treewide: Add SPDX license identifier for more missed files
Add SPDX license identifiers to all files which:

 - Have no license information of any form

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   scan/conversion to ignore the file

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 10:50:45 +02:00
Greg Kroah-Hartman 083a685c2e First set of IIO fixes for the 5.2 cycle.
* ads124
   - Avoid a buffer overrun when setting an array to 0.
 * ads8688
   - Don't use the pollfunc timestamp as it isn't set and would be wrong
     anyway for a device that does sampling on demand.
 * ds4422
   - Fix masking on register used for chip verification. Wrong address
     was being read.
 * mpu6050
   - Fix the fifo layout for ICM20602 to avoid underreading and hence failure
     to move on to the next record in the fifo.
 * NPCM ADC
   - Make sure there is actually a valid regulator before reading its voltage.
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Merge tag 'iio-fixes-for-5.2a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus:

Jonathan writes:

First set of IIO fixes for the 5.2 cycle.

* ads124
  - Avoid a buffer overrun when setting an array to 0.
* ads8688
  - Don't use the pollfunc timestamp as it isn't set and would be wrong
    anyway for a device that does sampling on demand.
* ds4422
  - Fix masking on register used for chip verification. Wrong address
    was being read.
* mpu6050
  - Fix the fifo layout for ICM20602 to avoid underreading and hence failure
    to move on to the next record in the fifo.
* NPCM ADC
  - Make sure there is actually a valid regulator before reading its voltage.

* tag 'iio-fixes-for-5.2a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: adc: ti-ads8688: fix timestamp is not updated in buffer
  iio: dac: ds4422/ds4424 fix chip verification
  iio: imu: mpu6050: Fix FIFO layout for ICM20602
  iio: adc: ads124: avoid buffer overflow
  iio: adc: modify NPCM ADC read reference voltage
2019-05-20 09:15:14 +02:00
Greg Kroah-Hartman c8b741e10b First set of new device support, features and cleanups for IIO in the 5.3 cycle
New device support
 * mt6577
   - add supprot for the mt6765 which requires a few minor additional
     new features in the driver.
 
 Yaml binding conversions
 * adxl345
 * isl29018
 * tsl2583
 * tsl2772
 
 Minor features and improvements
 * ad5758
   - declare an of_device_id table rather than just relying on the spi
     fallback which doesn't use the manufacturer id.
   - drop a set but not used variable left from previous refactor.
 * ad7816
   - Add a bit more description to kconfig text.
 * ad9523
   - change calculation order to improve frequency accuracy.
 * adxl372
   - declare an of_device_id table
 * adt7316
   - white space.
 * at91_adc
   - Use dev_get_drvdata directly rather than boucing to the platform device
     and back again.
 * cros_ec
   - add an id sysfs entry to bring in line with the other implementations.
 * ds5522
   - drop a check on the of_node existing as we don't actually use it for
     anything.
 * kxsd9
   - declare an of_device_id table.
 * maxim_thermocouple
   - declare an of_device_id table.
 * mt6577
   - add dt binding entry for mt8183 which is also supported.
 * rcar-gyroadc
   - tidy up unnecessary error messages.
 * stm32-dfsdm
   - improved error handling.
 * stmpe-adc
   - drop an unnecessary variable assignment.
   - add an of_device_id table.
   - reinit completion on begin converstion to avoid a path in which
     previous round had been interrupted, also switch to non interruptible
     wait to avoid an issue with a user program using -pg
   - simplify interrupt handling by just having them always enabled.
   - reset all interrupts on startup and in the timeout handler to
     avoid getting stuck.
 * sun4i-gpadc
   - SPDX
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Merge tag 'iio-for-5.3a' 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 5.3 cycle

New device support
* mt6577
  - add supprot for the mt6765 which requires a few minor additional
    new features in the driver.

Yaml binding conversions
* adxl345
* isl29018
* tsl2583
* tsl2772

Minor features and improvements
* ad5758
  - declare an of_device_id table rather than just relying on the spi
    fallback which doesn't use the manufacturer id.
  - drop a set but not used variable left from previous refactor.
* ad7816
  - Add a bit more description to kconfig text.
* ad9523
  - change calculation order to improve frequency accuracy.
* adxl372
  - declare an of_device_id table
* adt7316
  - white space.
* at91_adc
  - Use dev_get_drvdata directly rather than boucing to the platform device
    and back again.
* cros_ec
  - add an id sysfs entry to bring in line with the other implementations.
* ds5522
  - drop a check on the of_node existing as we don't actually use it for
    anything.
* kxsd9
  - declare an of_device_id table.
* maxim_thermocouple
  - declare an of_device_id table.
* mt6577
  - add dt binding entry for mt8183 which is also supported.
* rcar-gyroadc
  - tidy up unnecessary error messages.
* stm32-dfsdm
  - improved error handling.
* stmpe-adc
  - drop an unnecessary variable assignment.
  - add an of_device_id table.
  - reinit completion on begin converstion to avoid a path in which
    previous round had been interrupted, also switch to non interruptible
    wait to avoid an issue with a user program using -pg
  - simplify interrupt handling by just having them always enabled.
  - reset all interrupts on startup and in the timeout handler to
    avoid getting stuck.
* sun4i-gpadc
  - SPDX

* tag 'iio-for-5.3a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (28 commits)
  iio: adc: mediatek: mt6577-auxadc, add mt6765 support
  dt-bindings: iio: adc: mediatek: Add document for mt6765
  dt-bindings: iio: accel: adxl345: switch to YAML bindings
  iio: adc: sun4i-gpadc-iio convert to SPDX license tags
  iio: ad9523-1: Improve reported VCO frequency accuracy
  iio: dac: ds4422/ds4424 drop of_node check
  iio: stmpe-adc: Reset possible interrupts
  iio: stmpe-adc: Use wait_for_completion_timeout
  iio: stmpe-adc: Enable all stmpe-adc interrupts just once
  iio: stmpe-adc: Reinit completion struct on begin conversion
  iio: stmpe-adc: Add compatible name
  iio: stmpe-adc: Remove unnecessary assignment
  staging: iio: adc: Add paragraph to describe Kconfig symbol
  staging: iio: adt7316: match parenthesis alignment
  iio: adc: rcar-gyroadc: Remove devm_iio_device_alloc() error printing
  dt-bindings: iio: isl29018: convert bindings to YAML format
  dt-bindings: adc: mt8183: add binding document
  iio: dac: ad5758: remove set but not used variable 'dc_dc_mode'
  iio: cros_ec: add 'id' sysfs entry
  iio: adc: stm32-dfsdm: missing error case during probe
  ...
2019-05-20 09:13:53 +02:00
Chun-Hung Wu 6d97024dce iio: adc: mediatek: mt6577-auxadc, add mt6765 support
1. Add calibrated sample data support
2. Use of_match_table to decide each platform's
   feature set

Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-19 09:18:30 +01:00
Yangtao Li 5887c83647 iio: adc: sun4i-gpadc-iio convert to SPDX license tags
Updates license to use SPDX-License-Identifier.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-18 09:55:01 +01:00
Lars-Peter Clausen 0d698a538f iio: ad9523-1: Improve reported VCO frequency accuracy
To improve the accuracy of the reported VCO frequency perform all
multiplications before divisions. This reduces rounding errors and makes
sure the reported rates are accurate down to the last digit.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-18 09:40:37 +01:00
Linus Torvalds 8649efb2f8 power supply and reset changes for the v5.2 series
Core:
  * Add over-current health state
  * Add standard, adaptive and custom charge types
  * Add new properties for start/end charge threshold
 
 New Drivers / Hardware:
  * UCS1002 Programmable USB Port Power Controller
  * Ingenic JZ47xx Battery Fuel Gauge
  * AXP20x USB Power: Add AXP813 support
  * AT91 poweroff: Add SAM9X60 support
  * OLPC battery: Add XO-1.5 and XO-1.75 support
 
 Misc. Changes:
  * syscon-reboot: support mask property
  * AXP288 fuel gauge: Blacklist ACEPC T8/T11
   - Looks like some vendor thought it's a good idea to
     build a desktop system with a fuel gauge, that slowly
     "discharges"...
  * cpcap-battery: Fix calculation errors
  * misc. fixes
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Merge tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:
 "Core:
   - Add over-current health state
   - Add standard, adaptive and custom charge types
   - Add new properties for start/end charge threshold

  New Drivers / Hardware:
   - UCS1002 Programmable USB Port Power Controller
   - Ingenic JZ47xx Battery Fuel Gauge
   - AXP20x USB Power: Add AXP813 support
   - AT91 poweroff: Add SAM9X60 support
   - OLPC battery: Add XO-1.5 and XO-1.75 support

  Misc Changes:
   - syscon-reboot: support mask property
   - AXP288 fuel gauge: Blacklist ACEPC T8/T11. Looks like some vendor
     thought it's a good idea to build a desktop system with a fuel
     gauge, that slowly "discharges"...
   - cpcap-battery: Fix calculation errors
   - misc fixes"

* tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits)
  power: supply: olpc_battery: force the le/be casts
  power: supply: ucs1002: Fix build error without CONFIG_REGULATOR
  power: supply: ucs1002: Fix wrong return value checking
  power: supply: Add driver for Microchip UCS1002
  dt-bindings: power: supply: Add bindings for Microchip UCS1002
  power: supply: core: Add POWER_SUPPLY_HEALTH_OVERCURRENT constant
  power: supply: core: fix clang -Wunsequenced
  power: supply: core: Add missing documentation for CHARGE_CONTROL_* properties
  power: supply: core: Add CHARGE_CONTROL_{START_THRESHOLD,END_THRESHOLD} properties
  power: supply: core: Add Standard, Adaptive, and Custom charge types
  power: supply: axp288_fuel_gauge: Add ACEPC T8 and T11 mini PCs to the blacklist
  power: supply: bq27xxx_battery: Notify also about status changes
  power: supply: olpc_battery: Have the framework register sysfs files for us
  power: supply: olpc_battery: Add OLPC XO 1.75 support
  power: supply: olpc_battery: Avoid using platform_info
  power: supply: olpc_battery: Use devm_power_supply_register()
  power: supply: olpc_battery: Move priv data to a struct
  power: supply: olpc_battery: Use DT to get battery version
  x86/platform/olpc: Use a correct version when making up a battery node
  x86/platform/olpc: Trivial code move in DT fixup
  ...
2019-05-15 18:50:40 -07:00
Sean Nyekjaer e6d1229831 iio: adc: ti-ads8688: fix timestamp is not updated in buffer
When using the hrtimer iio trigger timestamp isn't updated.
If we use iio_get_time_ns it is updated correctly.

Fixes: 2a86487786 ("iio: adc: ti-ads8688: add trigger and buffer support")
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 12:50:18 +01:00
Ruslan Babayev 60f2208699 iio: dac: ds4422/ds4424 fix chip verification
The ds4424_get_value function takes channel number as it's 3rd
argument and translates it internally into I2C address using
DS4424_DAC_ADDR macro. The caller ds4424_verify_chip was passing an
already translated I2C address as its last argument.

Signed-off-by: Ruslan Babayev <ruslan@babayev.com>
Cc: xe-linux-external@cisco.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 12:49:59 +01:00
Ruslan Babayev a2d2010d95 iio: dac: ds4422/ds4424 drop of_node check
The driver doesn't actually rely on any DT properties. Removing this
check makes it usable on ACPI based platforms.

Signed-off-by: Ruslan Babayev <ruslan@babayev.com>
Cc: xe-linux-external@cisco.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 12:19:35 +01:00
Philippe Schenker ed1f310ee2 iio: stmpe-adc: Reset possible interrupts
Clear any interrupt that still is on the device on every channel
this driver is activated for in probe and specific channels in
the timeout handler.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 11:18:34 +01:00
Philippe Schenker e813dde6f8 iio: stmpe-adc: Use wait_for_completion_timeout
Use wait_for_completion_timeout instead of
wait_for_completion_interuptible_timeout.

The interruptible variant gets constantly interrupted if a user
program is compiled with the -pg option.
The killable variant was not used due to the fact that a second
program, reading on this device, that gets killed is then also killing
that wait.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 11:15:37 +01:00
Philippe Schenker 4bd44bb2b4 iio: stmpe-adc: Enable all stmpe-adc interrupts just once
This commit will enable the interrupts of all channels handled by this
driver only once in the probe function.

This will improve performance because one byte less has to be written over
i2c on each read out of the adc. On the fastest ADC mode this will improve
read out speed by 15%.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 11:09:02 +01:00
Philippe Schenker 263d21cd5e iio: stmpe-adc: Reinit completion struct on begin conversion
In some cases, the wait_completion got interrupted. This caused the
error-handling to mutex_unlock the function. The before turned on
interrupt then got called anyway. In the ISR then completion() was
called causing wrong adc-values returned in a following adc-readout.

Reinitialise completion struct to make sure the counter is zero
when beginning a new adc-conversion.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 11:00:11 +01:00
Philippe Schenker 2abd293703 iio: stmpe-adc: Add compatible name
Add the compatible name to the driver so it gets loaded when the proper
node in DT is detected.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-11 10:57:59 +01:00
Linus Torvalds e0dccbdf5a Staging / IIO driver patches for 5.2-rc1
Here is the big staging and iio driver update for 5.2-rc1.
 
 Lots of tiny fixes all over the staging and IIO driver trees here, along
 with some new IIO drivers.
 
 Also we ended up deleting two drivers, making this pull request remove a
 few hundred thousand lines of code, always a nice thing to see.  Both of
 the drivers removed have been replaced with "real" drivers in their
 various subsystem directories, and they will be coming to you from those
 locations during this merge window.
 
 There are some core vt/selection changes in here, that was due to some
 cleanups needed for the speakup fixes.  Those have all been acked by the
 various subsystem maintainers (i.e. me), so those are ok.
 
 We also added a few new drivers, for some odd hardware, giving new
 developers plenty to work on with basic coding style cleanups to come in
 the near future.
 
 Other than that, nothing unusual here.
 
 All of these have been in linux-next for a while with no reported
 issues, other than an odd gcc warning for one of the new drivers that
 should be fixed up soon.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging / IIO driver updates from Greg KH:
 "Here is the big staging and iio driver update for 5.2-rc1.

  Lots of tiny fixes all over the staging and IIO driver trees here,
  along with some new IIO drivers.

  The "counter" subsystem was added in here as well, as it is needed by
  the IIO drivers and subsystem.

  Also we ended up deleting two drivers, making this pull request remove
  a few hundred thousand lines of code, always a nice thing to see. Both
  of the drivers removed have been replaced with "real" drivers in their
  various subsystem directories, and they will be coming to you from
  those locations during this merge window.

  There are some core vt/selection changes in here, that was due to some
  cleanups needed for the speakup fixes. Those have all been acked by
  the various subsystem maintainers (i.e. me), so those are ok.

  We also added a few new drivers, for some odd hardware, giving new
  developers plenty to work on with basic coding style cleanups to come
  in the near future.

  Other than that, nothing unusual here.

  All of these have been in linux-next for a while with no reported
  issues, other than an odd gcc warning for one of the new drivers that
  should be fixed up soon"

[ I fixed up the warning myself  - Linus ]

* tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (663 commits)
  staging: kpc2000: kpc_spi: Fix build error for {read,write}q
  Staging: rtl8192e: Remove extra space before break statement
  Staging: rtl8192u: ieee80211: Fix if-else indentation warning
  Staging: rtl8192u: ieee80211: Fix indentation errors by removing extra spaces
  staging: most: cdev: fix chrdev_region leak in mod_exit
  staging: wlan-ng: Fix improper SPDX comment style
  staging: rtl8192u: ieee80211: Resolve ERROR reported by checkpatch
  staging: vc04_services: bcm2835-camera: Compress two lines into one line
  staging: rtl8723bs: core: Use !x in place of NULL comparison.
  staging: rtl8723bs: core: Prefer using the BIT Macro.
  staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling
  staging: kpc2000: fix up build problems with readq()
  staging: rtlwifi: move remaining phydm .h files
  staging: rtlwifi: strip down phydm .h files
  staging: rtlwifi: delete the staging driver
  staging: fieldbus: anybus-s: rename bus id field to avoid confusion
  staging: fieldbus: anybus-s: keep device bus id in bus endianness
  Staging: sm750fb: Change *array into *const array
  staging: rtl8192u: ieee80211: Fix spelling mistake
  staging: rtl8192u: ieee80211: Replace bit shifting with BIT macro
  ...
2019-05-07 13:31:29 -07:00
Linus Torvalds eac7078a0f pidfd patches for v5.2-rc1
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Merge tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux

Pull pidfd updates from Christian Brauner:
 "This patchset makes it possible to retrieve pidfds at process creation
  time by introducing the new flag CLONE_PIDFD to the clone() system
  call. Linus originally suggested to implement this as a new flag to
  clone() instead of making it a separate system call.

  After a thorough review from Oleg CLONE_PIDFD returns pidfds in the
  parent_tidptr argument. This means we can give back the associated pid
  and the pidfd at the same time. Access to process metadata information
  thus becomes rather trivial.

  As has been agreed, CLONE_PIDFD creates file descriptors based on
  anonymous inodes similar to the new mount api. They are made
  unconditional by this patchset as they are now needed by core kernel
  code (vfs, pidfd) even more than they already were before (timerfd,
  signalfd, io_uring, epoll etc.). The core patchset is rather small.
  The bulky looking changelist is caused by David's very simple changes
  to Kconfig to make anon inodes unconditional.

  A pidfd comes with additional information in fdinfo if the kernel
  supports procfs. The fdinfo file contains the pid of the process in
  the callers pid namespace in the same format as the procfs status
  file, i.e. "Pid:\t%d".

  To remove worries about missing metadata access this patchset comes
  with a sample/test program that illustrates how a combination of
  CLONE_PIDFD and pidfd_send_signal() can be used to gain race-free
  access to process metadata through /proc/<pid>.

  Further work based on this patchset has been done by Joel. His work
  makes pidfds pollable. It finished too late for this merge window. I
  would prefer to have it sitting in linux-next for a while and send it
  for inclusion during the 5.3 merge window"

* tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  samples: show race-free pidfd metadata access
  signal: support CLONE_PIDFD with pidfd_send_signal
  clone: add CLONE_PIDFD
  Make anon_inodes unconditional
2019-05-07 12:30:24 -07:00
Philippe Schenker b1f4c9a3c7 iio: stmpe-adc: Remove unnecessary assignment
Remove unnecessary assignment. This could potentially cause an issue, if
the wait function runs into a timeout. Furthermore is this assignment also
not there in stmpe_read_temp()

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-05 16:38:01 +01:00
Geert Uytterhoeven 5c25531d4b iio: adc: rcar-gyroadc: Remove devm_iio_device_alloc() error printing
devm_iio_device_alloc() can only fail due to a memory or IDA allocation
failure.  Hence there is no need to print a message, as the memory
allocation or IIO core code already takes care of that.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-05 12:51:07 +01:00
YueHaibing e99c25f432 iio: dac: ad5758: remove set but not used variable 'dc_dc_mode'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/iio/dac/ad5758.c: In function ad5758_write_powerdown:
drivers/iio/dac/ad5758.c:585:15: warning: variable dc_dc_mode set but not used [-Wunused-but-set-variable]

It is not used any more since
commit edde945257 ("iio: dac: ad5758: Modifications for new revision")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 14:15:39 +01:00
Gwendal Grignou 8b7a6a3574 iio: cros_ec: add 'id' sysfs entry
This new sysfs entry is used to interpret ring buffer information,
mainly by Android sensor HAL.
It expand to all sensors, the documentation about 'id' we can found
in Documentation/ABI/testing/sysfs-bus-iio-cros-ec.

Also fix typo in docs, I replace 'Septembre' by 'September'.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 14:11:59 +01:00
Fabien Dessenne d2fc015696 iio: adc: stm32-dfsdm: missing error case during probe
During probe, check the devm_ioremap_resource() error value.
Also return the devm_clk_get() error value instead of -EINVAL.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 14:09:28 +01:00
Fabien Dessenne 3e53ef91f8 iio: adc: stm32-dfsdm: manage the get_irq error case
During probe, check the "get_irq" error value.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 14:07:51 +01:00
Daniel Gomez ed61b30858 iio: dac: ad5758: declare missing of table
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.

Before this patch:
modinfo drivers/iio/dac/ad5758.ko | grep alias
alias:          spi:ad5758

After this patch:
modinfo drivers/iio/dac/ad5758.ko | grep alias
alias:          spi:ad5758
alias:          of:N*T*Cadi,ad5758C*
alias:          of:N*T*Cadi,ad5758

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 13:58:40 +01:00
Daniel Gomez 311def4cd2 iio: adxl372: declare missing of table
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.

Before this patch:
modinfo drivers/iio/accel/adxl372_spi.ko | grep alias

After this patch:
modinfo drivers/iio/accel/adxl372_spi.ko | grep alias
alias:          spi:adxl372
alias:          of:N*T*Cadi,adxl372C*
alias:          of:N*T*Cadi,adxl372

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 13:57:36 +01:00
Daniel Gomez 17b16c3cbe iio: accel: kxsd9: declare missing of table
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.

Before this patch:
modinfo drivers/iio/accel/kxsd9-spi.ko  | grep alias
alias:          spi:kxsd9

After this patch:
modinfo drivers/iio/accel/kxsd9-spi.ko  | grep alias
alias:          spi:kxsd9
alias:          of:N*T*Ckionix,kxsd9C*
alias:          of:N*T*Ckionix,kxsd9

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 13:56:15 +01:00
Daniel Gomez 34c2a55b0d iio: temperature: maxim_thermocouple: declare missing of table
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.

Before this patch:
modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
alias:          spi:max31855
alias:          spi:max6675

After this patch:
modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
alias:          spi:max31855
alias:          spi:max6675
alias:          of:N*T*Cmaxim,max31855C*
alias:          of:N*T*Cmaxim,max31855
alias:          of:N*T*Cmaxim,max6675C*
alias:          of:N*T*Cmaxim,max6675

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 13:54:40 +01:00
Kefeng Wang e3faedf71d iio: adc: at91: Use dev_get_drvdata()
Using dev_get_drvdata directly.

Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-27 13:07:12 +01:00
Fabrice Gasnier 597f55e3f3 counter: stm32-lptimer: add counter device
Add support for new counter device to stm32-lptimer.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25 21:33:41 +02:00
William Breathitt Gray f1d8a071d4 counter: 104-quad-8: Add Generic Counter interface support
This patch adds support for the Generic Counter interface to the
104-QUAD-8 driver. The existing 104-QUAD-8 device interface should not
be affected by this patch; all changes are intended as supplemental
additions as perceived by the user.

Generic Counter Counts are created for the eight quadrature channel
counts, as well as their respective quadrature A and B Signals (which
are associated via respective Synapse structures) and respective index
Signals.

The new Generic Counter interface sysfs attributes are intended to
expose the same functionality and data available via the existing
104-QUAD-8 IIO device interface; the Generic Counter interface serves
to provide the respective functionality and data in a standard way
expected of counter devices.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25 21:33:38 +02:00
William Breathitt Gray e854bac92b iio: 104-quad-8: Update license boilerplate
This patch simplifies the boilerplate license text by making use of a
SPDX license identifier line.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25 21:33:38 +02:00
Greg Kroah-Hartman bf402c08eb Second set of IIO new device support, features and cleanup for the 5.2 cycle.
New device suport
 * ad7606
   - Support the AD7616 16 channel, 12bit ADC.
 * fxas21002c
   - New driver for this gyroscope with I2C and SPI support.
 * lsm6dsx
   - Support the lsm6dsr, new device information structure and dt bindings.
 * srf04
   - Addition device IDs for mb1000, mb1010, mb1020, mb1030 and mb1040 +
     support of different required trigger pulse lengths.
 * st-accel
   - Support the ls2de12, new device info and dt bindings.
 * ti-ads8344
   - New driver for this 8 channel, 16 bit SPI ADC.
 
 Binding conversions to yaml - we have started doing these in general for IIO.
 * avia-hx711
 * bmp085
 
 Cleanups and minor fixes / additions
 * ad5758
   - Fixup for some changes between preproduction parts and final part.
 * ad7606
   - Refactor handling of oversampling to make it easy to vary between
     supported devices.
 * ad9832
   - Organise includes.
   - Clock framework to handle clocks.
 * ad9834
   - Drop unnecessary parenthesis.
 * bmc150
   - Use __func__ rather than hardcoding.
 * dummy_evgen.
   - Fix a memleak on error in probe.
 * kxcjk1013
   - Add KXCJ91008 ACPI ID as seen in the wild.
   - Use __func__ rather than hardcoding.
 * imx7d
   - Local dev variable to simplify code a bit.
   - dev_err replaces pr_err to give more info.
   - devm_platform_ioremap_resource for small reduction in boilerplate.
   - Simplify probe and remove by sharing suspend / resume logic.
   - Devm for iio_device_register as remove only contains the unregister.
 * lsm6dsx
   - Remove a variable that was never read.
   - Open code values where they are effectively described by what is assigned
     to them rather than using uninformative defines.
 * max31856
   - Avoid an unintialized ret variable in a path that can't actually occur
     but is hard for a static checker to know.
 * max9611
   - White space
 * mpu3050
   - Reduce a sleep worst case by switching from msleep to usleep_range.
 * qcom-spmi-adc5
   - Add MODULE_DEVICE_TABLE to assist autoloading of this as a module.
 * stm32-dfsdm
   - Fix missing dependencies.
 * stm32-timer trigger
   - Fix a build issue when disabled.
 * ti-ads7950
   - Fix mising dependency on CONFIG_GPIOLIB.
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Merge tag 'iio-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO new device support, features and cleanup for the 5.2 cycle.

New device suport
* ad7606
  - Support the AD7616 16 channel, 12bit ADC.
* fxas21002c
  - New driver for this gyroscope with I2C and SPI support.
* lsm6dsx
  - Support the lsm6dsr, new device information structure and dt bindings.
* srf04
  - Addition device IDs for mb1000, mb1010, mb1020, mb1030 and mb1040 +
    support of different required trigger pulse lengths.
* st-accel
  - Support the ls2de12, new device info and dt bindings.
* ti-ads8344
  - New driver for this 8 channel, 16 bit SPI ADC.

Binding conversions to yaml - we have started doing these in general for IIO.
* avia-hx711
* bmp085

Cleanups and minor fixes / additions
* ad5758
  - Fixup for some changes between preproduction parts and final part.
* ad7606
  - Refactor handling of oversampling to make it easy to vary between
    supported devices.
* ad9832
  - Organise includes.
  - Clock framework to handle clocks.
* ad9834
  - Drop unnecessary parenthesis.
* bmc150
  - Use __func__ rather than hardcoding.
* dummy_evgen.
  - Fix a memleak on error in probe.
* kxcjk1013
  - Add KXCJ91008 ACPI ID as seen in the wild.
  - Use __func__ rather than hardcoding.
* imx7d
  - Local dev variable to simplify code a bit.
  - dev_err replaces pr_err to give more info.
  - devm_platform_ioremap_resource for small reduction in boilerplate.
  - Simplify probe and remove by sharing suspend / resume logic.
  - Devm for iio_device_register as remove only contains the unregister.
* lsm6dsx
  - Remove a variable that was never read.
  - Open code values where they are effectively described by what is assigned
    to them rather than using uninformative defines.
* max31856
  - Avoid an unintialized ret variable in a path that can't actually occur
    but is hard for a static checker to know.
* max9611
  - White space
* mpu3050
  - Reduce a sleep worst case by switching from msleep to usleep_range.
* qcom-spmi-adc5
  - Add MODULE_DEVICE_TABLE to assist autoloading of this as a module.
* stm32-dfsdm
  - Fix missing dependencies.
* stm32-timer trigger
  - Fix a build issue when disabled.
* ti-ads7950
  - Fix mising dependency on CONFIG_GPIOLIB.

* tag 'iio-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (42 commits)
  iio: adc: qcom-spmi-adc5: Fix of-based module autoloading
  iio: dummy_evgen: fix possible memleak in evgen init
  iio:accel:Switch hardcoded function name with a reference to __func__ making the code more maintainable
  iio: adc: stm32-dfsdm: fix triggered buffer build dependency
  iio: adc: stm32-dfsdm: fix unmet direct dependencies detected
  iio: trigger: stm32-timer: fix build issue when disabled
  iio: imx7d_adc: Use devm_iio_device_register()
  iio: imx7d_adc: Simplify imx7d_adc_remove() with imx7d_adc_suspend()
  iio: imx7d_adc: Simplify imx7d_adc_probe() with imx7d_adc_resume()
  drivers/iio/gyro/mpu3050-core.c: This patch fix the following checkpatch warning.
  iio: dac: ad5758: Modifications for new revision
  iio: imu: st_lsm6dsx: inline per-sensor data
  iio: adc: Add driver for the TI ADS8344 A/DC chips
  dt-bindings: iio: adc: Add bindings for TI ADS8344 A/DC chips
  MAINTAINERS: add entry for fxas21002c gyro driver
  iio: gyro: fxas21002c: add spi driver
  iio: gyro: fxas21002c: add i2c driver
  iio: gyro: add core driver for fxas21002c
  iio: gyro: add DT bindings to fxas21002c
  Kconfig: change configuration of srf04 ultrasonic iio sensor
  ...
2019-04-25 10:50:51 +02:00
Bjorn Andersson 447ccb4e08 iio: adc: qcom-spmi-adc5: Fix of-based module autoloading
The of_device_id table needs to be registered as module alias in order
for automatic module loading to pick the kernel module based on the
DeviceTree compatible. So add MODULE_DEVICE_TABLE() to make this happen.

Fixes: e13d757279 ("iio: adc: Add QCOM SPMI PMIC5 ADC driver")
Cc: stable@vger.kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:51:29 +01:00
Pan Bian dfd4f64976 iio: dummy_evgen: fix possible memleak in evgen init
The memory allocated in the function iio_dummy_evgen_create is not
released if it fails to add the evgen device to device hierarchy. This
may result in a memory leak bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:45:03 +01:00
Mohan Kumar ce7afa5c56 iio:accel:Switch hardcoded function name with a reference to __func__ making the code more maintainable
It fixes the following checkpatch.pl warning:

WARNING: Prefer using '"%s...", __func__' to using function's name, in a
string

Signed-off-by: Mohan Kumar <mohankumar718@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:41:35 +01:00
Fabrice Gasnier 80696785ea iio: adc: stm32-dfsdm: fix triggered buffer build dependency
This fixes build errors seen when CONFIG_STM32_DFSDM_ADC is set, as
stm32-dfsdm-adc driver now also relies on triggered buffer API:

Fixes: 11646e81d7 ("iio: adc: stm32-dfsdm: add support for buffer modes")

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:15 +01:00
Fabrice Gasnier ba7ecfe43d iio: adc: stm32-dfsdm: fix unmet direct dependencies detected
This fixes unmet direct dependencies seen when CONFIG_STM32_DFSDM_ADC
is selected:

WARNING: unmet direct dependencies detected for IIO_BUFFER_HW_CONSUMER
  Depends on [n]: IIO [=y] && IIO_BUFFER [=n]
  Selected by [y]:
  - STM32_DFSDM_ADC [=y] && IIO [=y] && (ARCH_STM32 [=y] && OF [=y] ||
    COMPILE_TEST [=n])

Fixes: e2e6771c64 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support")

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:15 +01:00
Andrey Smirnov 9c6126940d iio: imx7d_adc: Use devm_iio_device_register()
Use devm_iio_device_register() and drop imx7d_adc_remove().

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Andrey Smirnov b846676066 iio: imx7d_adc: Simplify imx7d_adc_remove() with imx7d_adc_suspend()
Since imx7d_adc_remove() does exactly the same thing as
imx7d_adc_suspend() we can use the latter together with
devm_add_action_or_reset() to simplify the former. Rename
imx7d_adc_suspend() to imx7d_adc_disable() for clarity while at it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Andrey Smirnov 4fe86cdf92 iio: imx7d_adc: Simplify imx7d_adc_probe() with imx7d_adc_resume()
Initialization sequence performed in imx7d_adc_resume() is exactly the
same as the one being done in imx7d_adc_probe(). Make use of the
former in the latter to avoid code duplication. Rename
imx7d_adc_resume() to imx7d_adc_enable() for clarity while at it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Mohan Kumar 49deef1b1a drivers/iio/gyro/mpu3050-core.c: This patch fix the following checkpatch warning.
As per Documentation/timers/timers-howto.txt Msleep < 20ms can sleep for
up to 20ms. so use usleep_range.

Signed-off-by: Mohan Kumar <mohankumar718@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Mircea Caprioru edde945257 iio: dac: ad5758: Modifications for new revision
This patch will ensure compatibility with the new revision of the AD5758
dac converter. The modifications consist of removing the fault_prot_switch
function since this option is no longer available, and enabling the
ENABLE_PPC_BUFFERS bit in ADC_CONFIG register before setting the PPC
current mode.

The previous version of the chip was never released to customers
so there is no need to support it going forwards.

Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Lorenzo Bianconi b9fedb0a17 iio: imu: st_lsm6dsx: inline per-sensor data
As it has been already done for other st sensors in 'commit 9049531c91
("iio: accel: st_accel: inline per-sensor data")', get rid of some
defines and just open code the values into the appropriate struct
elements since the semantic meaning is inherent in the name of the
C99-addressable fields and there is no reason to duplicate the code

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:14 +01:00
Gregory CLEMENT 8dd2d7c0fe iio: adc: Add driver for the TI ADS8344 A/DC chips
This adds support for the Texas Instruments ADS8344 ADC chip. This chip
has a 16-bit 8-Channel ADC and is access directly through SPI.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:13 +01:00
Rui Miguel Silva 4da38f1be6 iio: gyro: fxas21002c: add spi driver
Add driver to talk over spi to a fxas21002c gyroscope device and use
the core as main controller.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:12 +01:00
Rui Miguel Silva a034cbe1c4 iio: gyro: fxas21002c: add i2c driver
Add the real driver to talk over i2c and use the fxas21002c core
for the main tasks.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:12 +01:00
Rui Miguel Silva a0701b6263 iio: gyro: add core driver for fxas21002c
Add core support for the NXP fxas21002c Tri-axis gyroscope,
using the iio subsystem. It supports PM operations, axis reading,
temperature, scale factor of the axis, high pass and low pass
filtering, and sampling frequency selection.

It will have extras modules to support the communication over i2c and
spi.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-22 11:34:09 +01:00
Greg Kroah-Hartman 817de6b859 Merge 5.1-rc6 into staging-next
We want the fixes in here as well as this resolves an iio driver merge
issue.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-21 23:18:44 +02:00
David Howells 5dd50aaeb1
Make anon_inodes unconditional
Make the anon_inodes facility unconditional so that it can be used by core
VFS code and pidfd code.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[christian@brauner.io: adapt commit message to mention pidfds]
Signed-off-by: Christian Brauner <christian@brauner.io>
2019-04-19 14:03:11 +02:00
Sebastian Reichel ec8242de40 Merge 'ib-jz47xx-battery-prereq' into psy-next
Merge immutable branch containing the IIO changes required
for the new Ingenic JZ47xx battery fuel gauge driver.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2019-04-18 21:27:38 +02:00
Andreas Klinger 21cf20a84a Kconfig: change configuration of srf04 ultrasonic iio sensor
reword configuration option for SRF04

list supported types in help text

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 14:08:48 +01:00
Andreas Klinger bb208037ae srf04.c: add maxbotix ultrasonic sensors
add Maxbotix LV ultrasonic sensor types mb1000, mb1010, mb1020, mb1030
and mb1040

add a configuration struct with the different trigger pulse lengths

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 14:05:31 +01:00
YueHaibing 1c2fb40546 iio: adc: ti-ads7950: Fix build error without CONFIG_GPIOLIB
When building with CONFIG_GPIOLIB is not set
gcc warns this:

drivers/iio/adc/ti-ads7950.c:75:19: error: field chip has incomplete type
  struct gpio_chip chip;
                   ^~~~
drivers/iio/adc/ti-ads7950.c: In function ti_ads7950_set:
drivers/iio/adc/ti-ads7950.c:409:32: error: implicit declaration of function gpiochip_get_data; did you mean acpi_get_data? [-Werror=implicit-function-declaration]
  struct ti_ads7950_state *st = gpiochip_get_data(chip);
                                ^~~~~~~~~~~~~~~~~
                                acpi_get_data

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: c97dce792d ("iio: adc: ti-ads7950: add GPIO support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Justin Chen <justinpopo6@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:52:11 +01:00
Colin Ian King 8e4fefec01 iio: temperature: max31856: fix uninitialized error return
Currently if mask is neither CHAN_INFO_RAW or CHAN_INFO_SCALE then
then an uninitialized error return 'ret' is returned. Fix this by
adding a default case that ensures -EINVAL is returned for this
specific case.

Addresses-Coverity: ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:50:09 +01:00
YueHaibing 631bd2f7ec iio: imu: st_lsm6dsx: remove set but not used variables 'acc_sensor' and 'gyro_sensor'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c: In function 'st_lsm6dsx_read_tagged_fifo':
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c:520:41: warning:
 variable 'gyro_sensor' set but not used [-Wunused-but-set-variable]

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c:520:28: warning:
 variable 'acc_sensor' set but not used [-Wunused-but-set-variable]

They are not used since commit 14c7c6e1a8 ("iio: imu: st_lsm6dsx: add
st_lsm6dsx_push_tagged_data routine")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:39:30 +01:00
Robert Jones 63440a630d iio: accel: add support to LIS2DE12
Add support to STMicroelectronics LIS2DE12 accelerometer in
st_accel framework.

http://www.st.com/resource/en/datasheet/lis2de12.pdf

Signed-off-by: Robert Jones <rjones@gateworks.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:31 +01:00
Valentin Manea 45e119e403 iio: accel: kxcjk1013: Add KIOX0008 ACPI Hardware-ID
Add the ACPI ID for KXCJ9 sensor seen on the a Teclast X80 Power
tablet.

Signed-off-by: Valentin Manea <linux-iio@mrs.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:30 +01:00
Andrey Smirnov a8427a7b37 iio: imx7d_adc: Use devm_platform_ioremap_resource()
Use devm_platform_ioremap_resource() to be able to drop a bit of
explicit boilerplate code.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:30 +01:00
Andrey Smirnov 8cc393bf30 iio: imx7d_adc: Replace pr_err with dev_err
Replace combination of pr_err()/dev_name() with an equivalent call for
dev_err().

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:30 +01:00
Andrey Smirnov aa21a28e90 iio: imx7d_adc: Add local struct device pointer in imx7d_adc_probe()
Use a local "struct device *dev" in imx7d_adc_probe() for brevity. No
functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:29 +01:00
Beniamin Bia 7989b4bb23 iio: adc: ad7616: Add support for AD7616 ADC
The AD7616 is a 12-bit ADC with 16 channels.

The AD7616 can be configured to work in hardware mode by controlling it via
gpio pins and read data via spi. No support for software mode yet, but it
is a work in progress.

This device requires a reset in order to update oversampling, so chip info
has got a new attribute to mark this.

The current assumption that this driver makes for AD7616, is that it's
working in Hardware Mode with Serial, Burst and Sequencer modes activated.
To activate them, following pins must be pulled high:
	-SER/PAR
	-SEQEN
And following must be pulled low:
	-WR/BURST
	-DB4/SEQEN

Datasheets:
Link: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7616.pdf

Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:29 +01:00
Stefan Popa 6bf229abce iio: adc: ad7606: Move oversampling options in chip info and rework *_avail attributes
Available oversampling ratios and scales can be shown by calling a
common ad7606_show_avail function which takes as parameters the array
which stores the values, together with the size of the array.

Oversampling options are now defined in chip info
structure and they are loaded at probe.

Has_Oversampling attribute was removed because oversampling_num was added
and it is not needed anymore.

The purpose of this patch is to deal with the scale_avail and
oversampling_avail arrays in a generic way. This makes it easier to add
support for new devices which will work with different scales and
oversampling ratios. It is also an intermediate step for adding support
for ad7616 which has different oversampling sampling ratios available.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:29 +01:00
Fabrizio Castro 8cf614950e iio: adc: Fix MAX9611 spacing
Between "config" and "MAX9611" there is a tab, replace it
with a space.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 13:22:29 +01:00
Steve Moskovchenko 1615fe41a1 iio: imu: mpu6050: Fix FIFO layout for ICM20602
The MPU6050 driver has recently gained support for the
ICM20602 IMU, which is very similar to MPU6xxx. However,
the ICM20602's FIFO data specifically includes temperature
readings, which were not present on MPU6xxx parts. As a
result, the driver will under-read the ICM20602's FIFO
register, causing the same (partial) sample to be returned
for all reads, until the FIFO overflows.

Fix this by adding a table of scan elements specifically
for the ICM20602, which takes the extra temperature data
into consideration.

While we're at it, fix the temperature offset and scaling
on ICM20602, since it uses different scale/offset constants
than the rest of the MPU6xxx devices.

Signed-off-by: Steve Moskovchenko <stevemo@skydio.com>
Fixes: 22904bdff9 ("iio: imu: mpu6050: Add support for the ICM 20602 IMU")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 11:45:01 +01:00
Artur Rojek 89388ca495 iio: inkern: Convert iio_read_avail_channel_raw into a wrapper
Convert "iio_read_avail_channel_raw" over to a wrapper around
"iio_read_avail_channel_attribute".

With the introduction of "iio_read_avail_channel_attribute",
the necessity of having a separate call to read raw channel values
became redundant.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 11:32:20 +01:00
Artur Rojek 9f421096a1 iio: inkern: API for reading available iio channel attribute values
Extend the inkern API with a function for reading available
attribute values of iio channels.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-14 11:11:00 +01:00
Vincent Stehlé 0db8aa49a9 iio: adc: ads124: avoid buffer overflow
When initializing the priv->data array starting from index 1, there is one
less element to consider than when initializing the full array.

Fixes: e717f8c6df ("iio: adc: Add the TI ads124s08 ADC code")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-07 13:01:36 +01:00
Lorenzo Bianconi 43901008fd iio: imu: st_lsm6dsx: add support to LSM6DSR
Add support to STM LSM6DSR 6-axis (acc + gyro) Mems sensor
https://www.st.com/resource/en/datasheet/lsm6dsr.pdf

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-07 11:29:43 +01:00
Tomer Maimon 4e63ed6b90 iio: adc: modify NPCM ADC read reference voltage
Checking if regulator is valid before reading
NPCM ADC regulator voltage to avoid system crash
in a case the regulator is not valid.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-07 11:26:47 +01:00
Lars-Peter Clausen df1d80aee9 iio: ad_sigma_delta: Properly handle SPI bus locking vs CS assertion
For devices from the SigmaDelta family we need to keep CS low when doing a
conversion, since the device will use the MISO line as a interrupt to
indicate that the conversion is complete.

This is why the driver locks the SPI bus and when the SPI bus is locked
keeps as long as a conversion is going on. The current implementation gets
one small detail wrong though. CS is only de-asserted after the SPI bus is
unlocked. This means it is possible for a different SPI device on the same
bus to send a message which would be wrongfully be addressed to the
SigmaDelta device as well. Make sure that the last SPI transfer that is
done while holding the SPI bus lock de-asserts the CS signal.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <Alexandru.Ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:21:15 +01:00
Fabrice Gasnier 6ec417d2f1 iio: adc: stm32-dfsdm: add PM support
Add PM and runtime PM support to STM32 DFSDM drivers:
- stm32-dfsdm-core: manage clocks.
- stm32-dfsdm-adc: restore channels configuration upon resume. Also stop
  restart everything in case of buffer mode.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:21:12 +01:00
Fabrice Gasnier 9f57110d2e iio: adc: stm32-dfsdm: improve sampling frequency accuracy
The sample frequency is driven using the oversampling ratio depending
on the SPI bus frequency.
Currently, oversampling ratio is computed by an entire division:
- spi_freq / sample_freq. This may result in inaccurate value.
Using DIV_ROUND_CLOSEST improves resulting sample frequency, which is
useful for audio that requests fixed rates (such as: 8, 16 or 32 kHz).
BTW, introduce new routine to re-factor sample frequency setting, and
move frequency accuracy message from warning to debug level.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:21:10 +01:00
Paresh Chaudhary fb55a51310 iio:temperature: Add MAX31856 thermocouple support
This patch adds support for Maxim MAX31856 thermocouple
temperature sensor support.

More information can be found in:
https://www.maximintegrated.com/en/ds/MAX31856.pdf

NOTE: Driver support only Comparator Mode.

Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com>
Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:21:05 +01:00
Lars-Peter Clausen 5cd6623957 iio: frequency: ad9523: Fix typo in ad9523_platform_data
Replace diff_{m1,m2} with div_{m1,m2} since they are dividers and not a
differential settings.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:58 +01:00
H. Nikolaus Schaller 94bceb3cf5 iio: gyro: bmg160: add device tree compatibility table
Add of_match_table.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:52 +01:00
Angus Ainslie (Purism) 5a441aade5 iio: light: vcnl4000 add support for the VCNL4040 proximity and light sensor
The VCNL4040 is almost identical to the VCNL4200 as far as register
layout goes but just need to check a different ID register location.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:47 +01:00
Angus Ainslie (Purism) ebd457d559 iio: light: vcnl4000 add devicetree hooks
Add an of_match table for devicetree probing.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:43 +01:00
Angus Ainslie (Purism) 78ed050dd2 iio: light: vcnl4000 use word writes instead of byte writes
The VCNL4200 datasheet says that word read and writes should be used
to access the registers.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Tested-by: Tomas Novotny <tomas@novotny.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:42 +01:00
Fabrice Gasnier 37ada026be iio: adc: stm32-dfsdm: claim direct mode for raw read and settings
Claim direct mode to ensure no buffer mode is in use for:
- single conversion
- sample rate setting (must be set when filter isn't enabled).
- oversampling ratio (must be set when filter isn't enabled).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:41 +01:00
Fabrice Gasnier 11646e81d7 iio: adc: stm32-dfsdm: add support for buffer modes
DFSDM conversions can be launched continuously, or using various
triggers:
- by software
- hardware triggers (e.g. like in stm32-adc: TIM, LPTIM, EXTI)
- synchronously with DFSDM filter 0. e.g. for filters 1, 2

Launching conversions can be done using two methods:
a - injected:
    - scan mode can be used to convert several channels each time a
      trigger occurs.
    - When not is scan mode, channels are converted in sequence, one upon
      each trigger.
b - regular:
    - supports software triggers or synchronous with filter 0
    - single or continuous conversions

This patch finalizes DFSDM operating modes using IIO buffer modes:
- INDIO_BUFFER_SOFTWARE: regular continuous conversions (no trigger)
  but limited to 1 channel. Users must set sampling frequency in this case.
  For filters > 1, conversions can be started synchronously with filter 0.
- INDIO_BUFFER_TRIGGERED: triggered conversions uses injected mode for
  launching conversions. DFSDM can use hardware triggers (e.g. STM32 timer
  or lptimer), so add INDIO_HARDWARE_TRIGGERED to supported modes.
- INDIO_DIRECT_MODE: Only support DMA-based buffer modes. In case no DMA is
  available, only support single conversions.

From userland perspective, to summarize various use cases:
1 - single conversion on any filter:
$ cd iio:deviceX
$ cat in_voltageY_raw
This uses regular a conversion (not continuous)

2 - Using sampling frequency without trigger (single channel, buffer)
$ cd iio:deviceX
$ echo 100 > sampling_frequency
$ echo "" > trigger/current_trigger
$ echo 1 > scan_elements/in_voltageY_en
$ echo 1 > buffer/enable
This uses regular conversion in continuous mode (Frequency is achieved
by tuning filter parameters)

3 - sync mode with filter 0: other filters can be converted when using
"st,filter0-sync" dt property. The conversions will get started at the
same time as filter 0. So for any filters > 1:
$ cd iio:deviceX
$ echo 100 > sampling_frequency
$ echo "" > trigger/current_trigger
$ echo 1 > scan_elements/in_voltageY_en
$ echo 1 > buffer/enable
Then start filter 0 as in 2 above.

4 - Using a hardware trigger (with one channel):
- check trigger, configure it:
$ cat /sys/bus/iio/devices/trigger1/name
tim6_trgo
$ echo 100 > /sys/bus/iio/devices/trigger1/sampling_frequency
- go to any filter:
$ echo 1 > scan_elements/in_voltageY_en
$ echo tim6_trgo > trigger/current_trigger
$ echo 1 > buffer/enable
This uses injected conversion as it uses a hardware trigger (without scan)

5 - Using a hardware trigger (with 2+ channel):
Same as in 4/ above, but enable two or more channels in scan_elements.
This uses injected conversion as it uses a hardware trigger (with scan mode)

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:39 +01:00
Fabrice Gasnier a6096762e9 iio: adc: stm32-dfsdm: add support for scan mode
In order to support multiple channels in buffer mode, add support for scan
mode. This is precursor patch to ease support of triggered buffer mode.
Currently, only audio uses buffer mode: Regular continuous conversions
with a single channel (per filter).
DFSDM hardware supports scan mode (only) with injected conversions.
Conversions can be launched by software (JSWSTART), trigger or
synchronously with filter 0 (e.g. JSYNC). Continuous conversion mode isn't
available for injected.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:38 +01:00
Fabrice Gasnier 9491f75fe2 iio: adc: stm32-dfsdm: enable hw consumer
Optionally enable IIO hw consumer, when provided (e.g. for DFSDM_IIO type).
This is precursor patch to introduce buffer modes.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:37 +01:00
Fabrice Gasnier 7464850873 iio: adc: stm32-dfsdm: move dma slave config to start routine
Move DMA slave configuration to start routine: depending on regular or
injected mode is in use, DMA needs to read resp. RDATAR or JDATAR.
This is precursor patch to introduce injected mode (used for scan).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:36 +01:00
Fabrice Gasnier caf9c1e598 iio: adc: stm32-dfsdm: move dma enable from start_conv() to start_dma()
Move DMA enable (e.g. set RDMAEN bit) away from start_conv() that is used
for both buffer and single conversions. Thus, single conv rely on
interrupt, not dma.
Note: take care to prepare all DMA stuff and set RDMAEN before starting
filter (can be set only when DFEN=0).

This is precursor patch to ease support of triggered buffer mode.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:35 +01:00
Fabrice Gasnier 6f2c4a59d9 iio: adc: stm32-dfsdm: continuous mode depends on current mode
DFSDM regular continuous mode usage depends on current mode (not DMA):
- for single conversion, RCONT doesn't need to be set.
- for buffer mode, RCONT has to be set (e.g. INDIO_BUFFER_SOFTWARE
  used by audio currently).
This is related to filter configuration, move it to relevant routine.

This is precursor patch to ease support of triggered buffer mode.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:33 +01:00
Fabrice Gasnier 2e19ba661e iio: adc: stm32-dfsdm: make spi_master_freq more accurate
Current ckout divider may be set to a value that makes ckout to exceed
spi-max-frequency. Rather use lower value (e.g. round up divider when
ckout isn't accurate).

Also when the SPI clock isn't accurate, 'spi_master_freq' is filled in
with expected frequency. Use computed value instead to be more accurate:
- e.g. source clock / (CKOUTDIV + 1)

Enforce checks on the divider: ckoutdiv range can be from 1-255 to provide
divider of 2-256.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:32 +01:00
Vladimir Petrigo bf2da97079 iio: adc: ad7780: Add parentheses to macros
- Fix CHECK Macro argument 'wordsize' may be better as '(wordsize)' to avoid precedence issues

Slightly modified by Jonathan to take into account the staging graduation
and a copy and paste version of the same item on the following line.

Signed-off-by: Vladimir Petrigo <vladimir.petrigo@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:30 +01:00
Alexandru Ardelean 3cb5161317 iio: imu: adis16400: move adis16400.h into adis16400.c
Final part of the re-organization. Move the `adis16400.h` into
`adis16400.c` since it no longer needs to be shared among other files.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:28 +01:00
Alexandru Ardelean 5447e3f15c iio: imu: adis16400: rename adis16400_core.c -> adi16400.c
This change does a simple 1-to-1 rename of the adis16400_core.c file. Now
that the `adis16400_buffer.c` file was removed, everything can be moved
into a single driver file.
But first, this rename.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:27 +01:00
Alexandru Ardelean 0e92e2d036 iio: imu: adis16400: move burst logic to ADIS lib
This change has been done separately, so that it's easier to visualize the
changed logic in the adis_scan_update() function.

Most of the function in this `adis16400_update_scan_mode()` that deals with
burst-mode will be re-used in the ADIS16480, but with different parameters.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:26 +01:00
Alexandru Ardelean 5075e0720d iio: imu: adis: generalize burst mode support
Some variants in the ADIS16400 family support burst mode. This mechanism is
implemented in the `adis16400_buffer.c` file.

Some variants in ADIS16480 are also adding burst mode, which is
functionally similar to ADIS16400, but with different parameters. To get
there, a `adis_burst` struct is added to parametrize certain bits of the
SPI communication to setup: the register that triggers burst-mode, and the
extra-data-length that needs be accounted for when building the bust-length
buffer.

The trigger handler cannot be made generic, since it's very specific to
each ADIS164XX family.

A future enhancement of this `adis_burst` mode will be the possibility to
enable/disable burst-mode. For the ADIS16400 family it's hard-coded to on
by default. But for ADIS16480 there will be a need to disable this.

When that will be implemented, both ADIS16400 & ADIS16480 will have the
burst-mode enable-able/disable-able.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:24 +01:00
Alexandru Ardelean 74878d4fa8 iio: imu: adis16400: move trigger handler into adis16400_core
The trigger handler for the ADIS16400 is very different from the generic
one in the ADIS library. Keeping it in a separate file won't make much
sense once the update_scan_mode function will be made more generic and
moved into the ADIS library.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:23 +01:00
Andreas Klinger 16b0526153 mb1232.c: add distance iio sensor with i2c
Add I2CXL-MaxSonar ultrasonic distance sensors of types mb1202, mb1212,
mb1222, mb1232, mb1242, mb7040, mb7137 using an i2c interface

Implemented functionality:
- reading the distance via in_distance_raw
- buffered mode with trigger
- make use of interrupt to announce completion of ranging

Add mb1232 driver to Kconfig and Makefile

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:17 +01:00
Kangjie Lu 536cc27dea iio: hmc5843: fix potential NULL pointer dereferences
devm_regmap_init_i2c may fail and return NULL. The fix returns
the error when it fails.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:14 +01:00
Renato Lui Geh 9fb27f807e staging: iio: ad7780: moving ad7780 out of staging
Move ad7780 ADC driver out of staging and into the mainline.

The ad7780 is a sigma-delta analog to digital converter. This driver provides
reading voltage values and status bits from both the ad778x and ad717x series.
Its interface also allows writing on the FILTER and GAIN GPIO pins on the
ad778x.

Signed-off-by: Renato Lui Geh <renatogeh@gmail.com>
Signed-off-by: Giuliano Belinassi <giuliano.belinassi@usp.br>
Co-developed-by: Giuliano Belinassi <giuliano.belinassi@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:06 +01:00
Gregory CLEMENT e32cff6f61 iio: adc: lpc32xx: Add scale feature
Until now this driver only exposed the raw value of the channels. With
this patch, the scale value is also exposed.

It depends of a regulator supply, and unlike most of the other driver, do
not having this regulator won't prevent to use the driver. The reason for
it is to allow to continue to use this driver with an old device tree. If
there is no regulator supply then the scale won't be exposed.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:02 +01:00
Gregory CLEMENT 9f29b00c58 iio: adc: lpc32xx: Cleanup headers
A few headers is useless: remove them.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:01 +01:00
Gregory CLEMENT 163321094b iio: adc: lpc32xx: Sort headers
Sort the headers in alphabetic order in order to ease the maintenance for
this part.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:01 +01:00
Lorenzo Bianconi 6af0e8a9a7 iio: imu: st_lsm6dsx: add support to LSM6DSOX
Add support to STM LSM6DSOX 6-axis (acc + gyro) Mems sensor
https://www.st.com/resource/en/datasheet/lsm6dsox.pdf

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:00 +01:00
Colin Ian King b34d6c835d iio: adc: ad7124 fix indentation issue, remove extra tab
A return statement is indented one level too deeply; clean this
up by removing a tab.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:59 +01:00
Enric Balletbo i Serra 37aa055c41 iio: cros_ec: Switch to SPDX identifier.
Adopt the SPDX license identifier headers to ease license compliance
management. Also fix MODULE_LICENSE for cros_ec_accel_legacy to match
the SPDX and boiler plate license.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:58 +01:00
Gwendal Grignou ad9cc622f1 iio: cros_ec: Add kernel-doc for cros_ec_sensors_read_lpc
Document cros_ec_sensors_read_lpc, adding an additional note to explain
that this is the safe function for reading the EC data.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:58 +01:00
Guenter Roeck b921d928a3 iio: cros_ec: Drop unnecessary include files
The cros_ec sensors drivers do not call any sysfs functions
or use any sysfs defines, and thus do not need to include
linux/sysfs.h. Also, some cros_ec drivers include linux/delay.h
and is not used.

Signed-off-by: Guenter Roeck <groeck@chromium.org>
[remove linux/delay.h]
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:58 +01:00
Linus Walleij 6282b5c620 iio: pressure: bmp280: BMP280 calibration to entropy
The BMP280/BME280 calibration data should also go into the
entropy pool, like we do for BMP180.

This just adds the temperature and pressure calibration, the
humidity calibration seems like too much annoying calls to
add.

Cc: Tomasz Duszynski <tduszyns@gmail.com>
Cc: Stefan Tatschner <stefan.tatschner@gmail.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:58 +01:00
Stefan Popa 326e235755 iio: imu: adis16480: Add support for external clock
Inertial sensor data collection and processing can be controlled by
configuring one of the DIOx lines as an external clock input. This
option is available for all devices supported by this driver. However,
only adis1649x devices support different modes for the external clock.

Sync mode is supported by all devices. In this mode, the output data
rate is equal with the clock frequency divided by DEC_RATE + 1. This
mode of calculation is similar with the case when the internal clock is
used.

Pulse Per Second (PPS) Mode, is only supported by adis1649x devices. In
this mode, the output data rate is equal to the product of the external
clock frequency and the scale factor in the SYNC_SCALE register.

This patch uses the "clock-names" property to enable the external clock
in one of the two supported modes: "sync" or "pps". This property is
optional. If it is not specified, the internal clock is used.

This patch also offers the option to select the DIOx line to be used as
an external clock input via the custom "adi,ext-clk-pin" property. If this
field is left empty, DIO2 is assigned as default external clock input pin.
Each DIOx pin supports only one function at a time (data ready line
selection or external clock input).

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:57 +01:00
Jonathan Cameron 20d9248e70 iio:dac:ad5064 mlock cleanup - move to a local lock.
indio_dev->mlock is intended to protect state transitions in
the core. It's scope is tightly defined. For device specific
uses such as those made here, we should define a local lock
allowing the scope of the lock to be defined near to what it
is protecting.

These mlock changes can be non obvious, but given we don't do
anything other than direct for DACs, these ones are easy to do.

If anyone wants to help with this particular effort it would
be most welcome!

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:57 +01:00
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
Nathan Chancellor 17104ca271 iio: adc: stmpe-adc: Shuffle an if statement around in stmpe_adc_isr
When building with -Wsometimes-uninitialized, Clang warns:

drivers/iio/adc/stmpe-adc.c:204:13: warning: variable 'data' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]

Clang can't tell that data will never be used uninitialized because the
two if statements take care of all cases. Remove the first if statement
and make it the else branch of the second one so that it is apparent to
Clang that all cases are covered.

Link: https://github.com/ClangBuiltLinux/linux/issues/387
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: NIck Desaulniers <ndesaulniers@google.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:56 +01:00
Nathan Chancellor 6f9ca1d3eb iio: common: ssp_sensors: Initialize calculated_time in ssp_common_process_data
When building with -Wsometimes-uninitialized, Clang warns:

drivers/iio/common/ssp_sensors/ssp_iio.c:95:6: warning: variable
'calculated_time' is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]

While it isn't wrong, this will never be a problem because
iio_push_to_buffers_with_timestamp only uses calculated_time
on the same condition that it is assigned (when scan_timestamp
is not zero). While iio_push_to_buffers_with_timestamp is marked
as inline, Clang does inlining in the optimization stage, which
happens after the semantic analysis phase (plus inline is merely
a hint to the compiler).

Fix this by just zero initializing calculated_time.

Link: https://github.com/ClangBuiltLinux/linux/issues/394
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:56 +01:00
Sven Van Asbroeck 11362b7a43 iio: proximity: as3935: fix use-after-free on device remove
This driver's probe() uses a mix of devm_ and non-devm_ functions. This
means that the remove order will not be the exact opposite of the probe
order.

Remove order:
1. remove() executes:
	iio_device_unregister
	iio_triggered_buffer_cleanup
	iio_trigger_unregister
	(A)
2. core frees devm resources in reverse order:
	free_irq
	iio_trigger_free
	iio_device_free

In (A) the trigger has been unregistered, but the irq handler is still
registered and active, so the trigger may still be touched via
interrupt -> as3935_event_work. This is a potential use-after-unregister.

Given that the delayed work is never canceled explicitly, it may run even
after iio_device_free. This is a potential use-after-free.

Solution: convert all probe functions to their devm_ equivalents.
Add a devm callback, called by the core on remove right after irq_free,
which explicitly cancels the delayed work. This will guarantee that all
resources are freed in the correct order.

As an added bonus, some boilerplate code can be removed.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:56 +01:00
Anderson Reis 71a7766b36 iio:potentiostat:lmp91000: change dev_err message
Change dev_err message on line 215 in order to inform that
tia-gain-ohm is not defined and an external resistor is not
specified.

Signed-off-by: Anderson Reis <andersonreisrosa@gmail.com>
Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:55 +01:00
Anderson Reis b11a89d5d2 iio:potentiostat:lmp91000: invert if statement
Invert if statement arms in line 214, in order to make the code cleaner,
solve these checkpatch.pl CHECKs:

- lmp9100.c:214: CHECK: braces {} should be used on all arms of this statement
- lmp9100.c:216: CHECK: Unbalanced braces around else statement

Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: Anderson Reis <andersonreisrosa@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:55 +01:00
Anderson Reis cd4779f120 iio:potentiostat:lmp91000: reduce line width and remove blank line
Break the line 258 in order fit the line width on 80 characters. Remove
the blank line 279, as the line before is also a blank line. Solve these
checkpath.el WARNING and CHECK:

- lmp91000.c:258: WARNING: line over 80 characters
- lmp91000.c:279: CHECK: Please don't use multiple blank lines

Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: Anderson Reis <andersonreisrosa@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:55 +01:00
Lucas Oshiro 681ca44779 iio:potentiostat:lmp91000: remove unnecessary parentheses
Remove unnecessary parentheses on line 116.

Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: Anderson Reis <andersonreisrosa@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:54 +01:00
Justin Chen c97dce792d iio: adc: ti-ads7950: add GPIO support
The ADS79XX has GPIO pins that can be used. Add support for the GPIO
pins using the GPIO chip framework.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:53 +01:00
Kangjie Lu 13814627c9 iio: adc: fix a potential NULL pointer dereference
devm_iio_trigger_alloc may fail and return NULL. The fix returns
ENOMEM when it fails.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:53 +01:00
Sean Nyekjaer d43102f525 iio: dac: ti-dac5571: Update the module author email address
Update the module author to the current email address

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:53 +01:00
Sean Nyekjaer bcccd7ab3d iio: adc: ti-ads8688: Update the module author email address
Update the module author to the current email address.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:53 +01:00
Robert Yang 3b866fd28f iio: accel: kxcjk1013: Add device tree support
Add device tree support for kxcjk-1013 accelerometer sensors.

Signed-off-by: Robert Yang <decatf@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:52 +01:00
Neil Armstrong e415a1659e iio: adc: meson-saradc: add support for Meson G12A
Add the SAR ADC driver for the Amlogic Meson-G12A SoC.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:51 +01:00
Andy Shevchenko 3862828a90 iio: buffer: Switch to bitmap_zalloc()
Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:51 +01:00
Gustavo A. R. Silva 74c420e0a5 iio: cros_ec_accel_legacy: Refactor code in cros_ec_accel_legacy_probe
Refactor some code in order to fix both the technical implementation
and the following warnings:

drivers/iio/accel/cros_ec_accel_legacy.c: In function ‘cros_ec_accel_legacy_probe’:
drivers/iio/accel/cros_ec_accel_legacy.c:387:36: warning: this statement may fall through [-Wimplicit-fallthrough=]
    ec_accel_channels[X].scan_index = Y;
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drivers/iio/accel/cros_ec_accel_legacy.c:388:3: note: here
   case Y:
   ^~~~
drivers/iio/accel/cros_ec_accel_legacy.c:389:36: warning: this statement may fall through [-Wimplicit-fallthrough=]
    ec_accel_channels[Y].scan_index = X;
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drivers/iio/accel/cros_ec_accel_legacy.c:390:3: note: here
   case Z:
   ^~~~

Notice that neither the for loop nor the switch statement is needed.
Also, "state->sign[Y] = 1" should be unconditional.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:50 +01:00
Colin Ian King f6672544df iio: st_accel: remove redundant unsigned less than zero check
The check that variable val is less than zero is redundant since val
is an unsigned int and hence can never be less than zero. Remove it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:50 +01:00
Lorenzo Bianconi 3054c4ff28 iio: imu: st_lsm6dsx: add support to ASM330LHH
Add support to STM ASM330LHH 6-axis (acc + gyro) Mems sensor
https://www.st.com/resource/en/datasheet/asm330lhh.pdf

Tested-by: Mario Tesi <mario.tesi@st.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:49 +01:00
H. Nikolaus Schaller 67b9d4d098 iio: ak8975: improve code readability
- use temporary variable in get_mount_matrix()
- remove , after { }

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:48 +01:00
H. Nikolaus Schaller 28799ceac0 iio: mpu6050: improve code readability
- use temporary variable in get_mount_matrix()
- remove , after { }

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:48 +01:00
H. Nikolaus Schaller 8d7ea73814 iio: magnetometer: hmc5843: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:48 +01:00
H. Nikolaus Schaller d9842c770a iio: magnetometer: bmc150: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:48 +01:00
H. Nikolaus Schaller 70b5fdbb2e iio: gyro: itg3200: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:47 +01:00
H. Nikolaus Schaller 3a6049f6db iio: gyro: bmg160: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:47 +01:00
H. Nikolaus Schaller 587c2bea23 iio: accel: bma180: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:47 +01:00
H. Nikolaus Schaller 3c35e20a11 iio: accel: bmc150: add mount matrix support
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:46 +01:00
Andy Shevchenko fb1589710e iio: Allow to read mount matrix from ACPI
Currently mount matrix is allowed in Device Tree, though there is
no technical issue to extend it to support ACPI.

Convert the function to use device_property_read_string_array() and
thus allow to read mount matrix from ACPI if available.

Example of use in _DSD method:

  Name (_DSD, Package ()
  {
     ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
     Package ()
     {
        Package () { "mount-matrix", Package() {
                "1", "0",     "0",
                "0", "0.866", "0.5",
                "0", "-0.5",  "0.866",
        } },
     }
  })

At the same time drop the "of" prefix from its name and
convert current users.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:46 +01:00
Bárbara Fernandes 0a39ac29e0 iio:adc:ad7923: Rewrite comparison to NULL
Solves checkpath.pl's message:

CHECK: Comparison to NULL could be written "!indio_dev"

Signed-off-by: Bárbara Fernandes <barbara.fernandes@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:46 +01:00
Bárbara Fernandes 385c301cec iio:adc:ad7923: Put macro argument between ()'s
Put macro argument between parenthesis in order to avoid precedence
issues. Solves the following checkpath.pl's messages:

CHECK: Macro argument 'mode' may be better as '(mode)' to avoid
precedence issues
CHECK: Macro argument 'channel' may be better as '(channel)' to
avoid precedence issues
CHECK: Macro argument reuse 'sequence' - possible side-effects?
CHECK: Macro argument 'sequence' may be better as '(sequence)' to
avoid precedence issues
CHECK: Macro argument 'val' may be better as '(val)' to avoid
precedence issues
CHECK: Macro argument 'dec' may be better as '(dec)' to avoid precedence
issues
CHECK: Macro argument 'bits' may be better as '(bits)' to avoid
precedence issues

Signed-off-by: Bárbara Fernandes <barbara.fernandes@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:46 +01:00
Bárbara Fernandes c1fc8bb0f6 iio:adc:ad7923: Use BIT macro instead of bitshift
Replace use of the operation '<<' by the BIT macro. Solves checkpath.pl's
message:

CHECK: Prefer using the BIT macro

Signed-off-by: Bárbara Fernandes <barbara.fernandes@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:45 +01:00
Bárbara Fernandes 66deb5c170 iio:adc:ad7923: Align broken line to parenthesis
Get broken line aligned with parenthesis on upper line. Solves
checkpatch.pl's message:

CHECK: Alignment should match open parenthesis

Signed-off-by: Bárbara Fernandes <barbara.fernandes@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:45 +01:00
Fabrice Gasnier 6dc3e36fbc iio: counter: stm32-lptimer: Add power management support
Add suspend/resume PM sleep ops. When going to low power, disable
active counter. Only active counter should be resumed: don't touch
disabled counter, as it may be used by other LPTimer MFD child driver.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:45 +01:00
Stefan Popa 82e7a1b250 iio: imu: adis16480: Add support for ADIS1649x family of devices
The ADIS16495 and ADIS16497 are inertial systems that include a triaxis
gyroscope and a triaxis accelerometer. The serial peripheral interface
(SPI) provide a simple interface for data collection and configuration
control. The devices are similar to ADIS16475, ADIS16480, ADIS16485 and
ADIS16488, the main differences are highlighted below:

* The temperature data scale is 0.00565 C/LSB for ADIS16475 and ADIS1648x
  devices, while for ADIS1649x 0.0125 C/LSB.

* ADIS1649x devices support different gyroscope measurement ranges which
  are dependent on the dash number (-1, -2, -3), see Table 24 in the
  ADIS16495 datasheet. However, the ADIS16497 gyroscopes have the same
  scale as ADIS16495.

* ADIS16495 devices support the acceleration maximum range of 8g, while
  ADIS16497 devices go up to 40g.

* The internal clock for ADIS1649x devices is 4.25 kSPS. The sampling
  frequency is calculated by applying a decimation rate which can take a
  maximum value of 4250.

* ADIS1649x devices support different default filter frequencies.

Datasheets:
Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adis16495.pdf
Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adis16497.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:43 +01:00
Stefan Popa 83ec2d5404 iio: imu: adis16480: Deal with filter freq in a generic way
When setting the filter frequency, the driver looks into the
adis16480_def_filter_freqs table for the best match. Pass this table to
the chip_info struct since future devices will need to use a different
table.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:43 +01:00
Stefan Popa e0e6398e1e iio: imu: adis16480: Calculate the sampling frequency in a generic way
The adis1648x devices have an internal clock of 2.46 kSPS. The sampling
frequency is calculated by applying a decimation rate which can take the
maximum value of 2047.

Although all adis1648x devices are similar in this regard, devices that
will use this feature will be added in the future.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:43 +01:00
Stefan Popa 6cf7b866bd iio: imu: adis16480: Treat temperature scale in a generic way
All supported devices provide internal temperature measurement from -40 C
to +85 C, with +25 C representing value 0x00.

This patch treats the temperature scale in a generic way, similar to the
accelerometer and gyroscope scales. So far, there are no temperature max
scale differences between the supported devices. However, devices that
will make use of this feature will be added in the future.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:42 +01:00
Stefan Popa 304840c476 iio: imu: adis16480: Add OF device ID table
The driver does not have a struct of_device_id table, but supported
devices are registered via Device Trees. This patch adds OF device ID
table.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:42 +01:00
Stefan Popa cede2f899d iio: imu: adis16480: Add support for configurable drdy indicator
The FNCTIO_CTRL register provides configuration control for each I/O pin
(DIO1, DIO2, DIO3 and DIO4).

This patch adds the option to configure each DIOx pin as data ready
indicator with positive or negative polarity by reading the 'interrupts'
and 'interrupt-names' properties from the devicetree. The
'interrupt-names' property is optional, if it is not specified, then the
DIO1 pin is used as default data ready signal.

Although the factory default assigns DIO2 as data ready signal, in the
versions previous this patch, DIO1 pin was used. We should leave this
configuration as is, since some devices might be expecting the interrupt
on the wrong physical pin.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:42 +01:00
Justin Chen abbde27929 iio: adc: ti-ads7950: Fix improper use of mlock
Indio->mlock is used for protecting the different iio device modes.
It is currently not being used in this way. Replace the lock with
an internal lock specifically used for protecting the SPI transfer
buffer.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:41 +01:00
Mathieu Othacehe be35d281da iio: trigger: Print an error if there is no available irq
If there are more trigger consumers than
CONFIG_IIO_CONSUMERS_PER_TRIGGER, iio_trigger_attach_poll_func will
silently fail. Add an error message to inform the user that
CONFIG_IIO_CONSUMERS_PER_TRIGGER limit might be exceeded.

Signed-off-by: Mathieu Othacehe <m.othacehe@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:41 +01:00
Gustavo A. R. Silva cb57f2eb01 iio: mma8452: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/iio/accel/mma8452.c: In function ‘mma8452_probe’:
drivers/iio/accel/mma8452.c:1581:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (ret == data->chip_info->chip_id)
      ^
drivers/iio/accel/mma8452.c:1584:2: note: here
  default:
  ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:41 +01:00
Tomasz Duszynski 036aa1fee1 iio: chemical: pms7003: extend supported sensors list
Add other sensors to the compatible list.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:40 +01:00
Wei Yongjun 76838a8f29 iio: adc: ingenic: remove redundant dev_err call in ingenic_adc_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:40 +01:00
Chengguang Xu 6b079a807b iio: remove redundant unlikely annotation
unlikely has already included in IS_ERR(),
so just remove redundant unlikely annotation.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:19:40 +01:00
Fabrice Gasnier 7f75591fc5 iio: core: fix a possible circular locking dependency
This fixes a possible circular locking dependency detected warning seen
with:
- CONFIG_PROVE_LOCKING=y
- consumer/provider IIO devices (ex: "voltage-divider" consumer of "adc")

When using the IIO consumer interface, e.g. iio_channel_get(), the consumer
device will likely call iio_read_channel_raw() or similar that rely on
'info_exist_lock' mutex.

typically:
...
	mutex_lock(&chan->indio_dev->info_exist_lock);
	if (chan->indio_dev->info == NULL) {
		ret = -ENODEV;
		goto err_unlock;
	}
	ret = do_some_ops()
err_unlock:
	mutex_unlock(&chan->indio_dev->info_exist_lock);
	return ret;
...

Same mutex is also hold in iio_device_unregister().

The following deadlock warning happens when:
- the consumer device has called an API like iio_read_channel_raw()
  at least once.
- the consumer driver is unregistered, removed (unbind from sysfs)

======================================================
WARNING: possible circular locking dependency detected
4.19.24 #577 Not tainted
------------------------------------------------------
sh/372 is trying to acquire lock:
(kn->count#30){++++}, at: kernfs_remove_by_name_ns+0x3c/0x84

but task is already holding lock:
(&dev->info_exist_lock){+.+.}, at: iio_device_unregister+0x18/0x60

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #1 (&dev->info_exist_lock){+.+.}:
       __mutex_lock+0x70/0xa3c
       mutex_lock_nested+0x1c/0x24
       iio_read_channel_raw+0x1c/0x60
       iio_read_channel_info+0xa8/0xb0
       dev_attr_show+0x1c/0x48
       sysfs_kf_seq_show+0x84/0xec
       seq_read+0x154/0x528
       __vfs_read+0x2c/0x15c
       vfs_read+0x8c/0x110
       ksys_read+0x4c/0xac
       ret_fast_syscall+0x0/0x28
       0xbedefb60

-> #0 (kn->count#30){++++}:
       lock_acquire+0xd8/0x268
       __kernfs_remove+0x288/0x374
       kernfs_remove_by_name_ns+0x3c/0x84
       remove_files+0x34/0x78
       sysfs_remove_group+0x40/0x9c
       sysfs_remove_groups+0x24/0x34
       device_remove_attrs+0x38/0x64
       device_del+0x11c/0x360
       cdev_device_del+0x14/0x2c
       iio_device_unregister+0x24/0x60
       release_nodes+0x1bc/0x200
       device_release_driver_internal+0x1a0/0x230
       unbind_store+0x80/0x130
       kernfs_fop_write+0x100/0x1e4
       __vfs_write+0x2c/0x160
       vfs_write+0xa4/0x17c
       ksys_write+0x4c/0xac
       ret_fast_syscall+0x0/0x28
       0xbe906840

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&dev->info_exist_lock);
                               lock(kn->count#30);
                               lock(&dev->info_exist_lock);
  lock(kn->count#30);

 *** DEADLOCK ***
...

cdev_device_del() can be called without holding the lock. It should be safe
as info_exist_lock prevents kernelspace consumers to use the exported
routines during/after provider removal. cdev_device_del() is for userspace.

Help to reproduce:
See example: Documentation/devicetree/bindings/iio/afe/voltage-divider.txt
sysv {
	compatible = "voltage-divider";
	io-channels = <&adc 0>;
	output-ohms = <22>;
	full-ohms = <222>;
};

First, go to iio:deviceX for the "voltage-divider", do one read:
$ cd /sys/bus/iio/devices/iio:deviceX
$ cat in_voltage0_raw

Then, unbind the consumer driver. It triggers above deadlock warning.
$ cd /sys/bus/platform/drivers/iio-rescale/
$ echo sysv > unbind

Note I don't actually expect stable will pick this up all the
way back into IIO being in staging, but if's probably valid that
far back.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Fixes: ac917a8111 ("staging:iio:core set the iio_dev.info pointer to null on unregister")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-31 11:11:31 +01:00
Dragos Bogdan fccfb9ce70 iio: ad_sigma_delta: select channel when reading register
The desired channel has to be selected in order to correctly fill the
buffer with the corresponding data.
The `ad_sd_write_reg()` already does this, but for the
`ad_sd_read_reg_raw()` this was omitted.

Fixes: af3008485e ("iio:adc: Add common code for ADI Sigma Delta devices")
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-24 17:51:03 +00:00
Arnd Bergmann f6a7bf2ccf iio: pms7003: select IIO_TRIGGERED_BUFFER
Without IIO_TRIGGERED_BUFFER, this driver fails to link:

drivers/iio/chemical/pms7003.o: In function `pms7003_probe':
pms7003.c:(.text+0x21c): undefined reference to `devm_iio_triggered_buffer_setup'
pms7003.c:(.text+0x21c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `devm_iio_triggered_buffer_setup'

Fixes: a1d642266c ("iio: chemical: add support for Plantower PMS7003 sensor")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 16:34:56 +00:00
Gwendal Grignou 3d02d7082e iio: cros_ec: Fix the maths for gyro scale calculation
Calculation did not use IIO_DEGREE_TO_RAD and implemented a variant to
avoid precision loss as we aim a nano value. The offset added to avoid
rounding error, though, doesn't give us a close result to the expected
value. E.g.

For 1000dps, the result should be:

    (1000 * pi ) / 180 >> 15 ~= 0.000532632218

But with current calculation we get

    $ cat scale
    0.000547890

Fix the calculation by just doing the maths involved for a nano value

   val * pi * 10e12 / (180 * 2^15)

so we get a closer result.

    $ cat scale
    0.000532632

Fixes: c14dca07a3 ("iio: cros_ec_sensors: add ChromeOS EC Contiguous Sensors driver")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 16:08:55 +00:00
Sven Van Asbroeck 2e4b88f739 iio: adc: xilinx: prevent touching unclocked h/w on remove
In remove, the clock is disabled before canceling the
delayed work. This means that the delayed work may be
touching unclocked hardware.

Fix by disabling the clock after the delayed work is
fully canceled. This is consistent with the probe error
path order.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 15:49:56 +00:00
Sven Van Asbroeck 862e4644fd iio: adc: xilinx: fix potential use-after-free on probe
If probe errors out after request_irq(), its error path
does not explicitly cancel the delayed work, which may
have been scheduled by the interrupt handler.

This means the delayed work may still be running when
the core frees the private structure (struct xadc).
This is a potential use-after-free.

Fix by inserting cancel_delayed_work_sync() in the probe
error path.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 15:48:51 +00:00
Sven Van Asbroeck 62039b6aef iio: adc: xilinx: fix potential use-after-free on remove
When cancel_delayed_work() returns, the delayed work may still
be running. This means that the core could potentially free
the private structure (struct xadc) while the delayed work
is still using it. This is a potential use-after-free.

Fix by calling cancel_delayed_work_sync(), which waits for
any residual work to finish before returning.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 15:48:30 +00:00
Jean-Francois Dagenais 0600353150 iio: dac: mcp4725: add missing powerdown bits in store eeprom
When issuing the write DAC register and write eeprom command, the two
powerdown bits (PD0 and PD1) are assumed by the chip to be present in
the bytes sent. Leaving them at 0 implies "powerdown disabled" which is
a different state that the current one. By adding the current state of
the powerdown in the i2c write, the chip will correctly power-on exactly
like as it is at the moment of store_eeprom call.

This is documented in MCP4725's datasheet, FIGURE 6-2: "Write Commands
for DAC Input Register and EEPROM" and MCP4726's datasheet, FIGURE 6-3:
"Write All Memory Command".

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-16 15:15:31 +00:00
he, bo fe2d3df639 io: accel: kxcjk1013: restore the range after resume.
On some laptops, kxcjk1013 is powered off when system enters S3. We need
restore the range regiter during resume. Otherwise, the sensor doesn't
work properly after S3.

Signed-off-by: he, bo <bo.he@intel.com>
Signed-off-by: Chen, Hu <hu1.chen@intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 17:30:14 +00:00
Mike Looijmans 73f3bc6da5 iio:chemical:bme680: Fix SPI read interface
The SPI interface implementation was completely broken.

When using the SPI interface, there are only 7 address bits, the upper bit
is controlled by a page select register. The core needs access to both
ranges, so implement register read/write for both regions. The regmap
paging functionality didn't agree with a register that needs to be read
and modified, so I implemented a custom paging algorithm.

This fixes that the device wouldn't even probe in SPI mode.

The SPI interface then isn't different from I2C, merged them into the core,
and the I2C/SPI named registers are no longer needed.

Implemented register value caching for the registers to reduce the I2C/SPI
data transfers considerably.

The calibration set reads as all zeroes until some undefined point in time,
and I couldn't determine what makes it valid. The datasheet mentions these
registers but does not provide any hints on when they become valid, and they
aren't even enumerated in the memory map. So check the calibration and
retry reading it from the device after each measurement until it provides
something valid.

Despite the size this is suitable for a stable backport given that
it seems the SPI support never worked.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Fixes: 1b3bd85927 ("iio: chemical: Add support for Bosch BME680 sensor");
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 17:27:36 +00:00
Mike Looijmans 9436f45dd5 iio:chemical:bme680: Fix, report temperature in millidegrees
The standard unit for temperature is millidegrees Celcius. Adapt the
driver to report in millidegrees instead of degrees.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Fixes: 1b3bd85927 ("iio: chemical: Add support for Bosch BME680 sensor");
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 17:27:12 +00:00
Jonathan Cameron 831d2fefdf iio: chemical: fix missing Kconfig block for sgp30
I clearly messed up applying this patch. Not sure
how but the entire Kconfig block is missing. This
patch puts it back as it was in the original patch.

Reported-by: Andreas Brauchli <a.brauchli@elementarea.net>
Fixes: ce51412416 ("iio: chemical: sgp30: Support Sensirion SGP30/SGPC3 sensors")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 16:59:03 +00:00
Georg Ottinger 09c6bdee51 iio: adc: at91: disable adc channel interrupt in timeout case
Having a brief look at at91_adc_read_raw() it is obvious that in the case
of a timeout the setting of AT91_ADC_CHDR and AT91_ADC_IDR registers is
omitted. If 2 different channels are queried we can end up with a
situation where two interrupts are enabled, but only one interrupt is
cleared in the interrupt handler. Resulting in a interrupt loop and a
system hang.

Signed-off-by: Georg Ottinger <g.ottinger@abatec.at>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 16:55:07 +00:00
Sergey Larin 409a51e0a4 iio: gyro: mpu3050: fix chip ID reading
According to the datasheet, the last bit of CHIP_ID register controls
I2C bus, and the first one is unused. Handle this correctly.

Note that there are chips out there that have a value such that
the id check currently fails.

Signed-off-by: Sergey Larin <cerg2010cerg2010@mail.ru>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 16:55:06 +00:00
Lars-Peter Clausen 20ea39ef9f iio: Fix scan mask selection
The trialmask is expected to have all bits set to 0 after allocation.
Currently kmalloc_array() is used which does not zero the memory and so
random bits are set. This results in random channels being enabled when
they shouldn't. Replace kmalloc_array() with kcalloc() which has the same
interface but zeros the memory.

Note the fix is actually required earlier than the below fixes tag, but
will require a manual backport due to move from kmalloc to kmalloc_array.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Fixes commit 057ac1acdf ("iio: Use kmalloc_array() in iio_scan_mask_set()").
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 16:55:06 +00:00
Mike Looijmans 40a7198a4a iio/gyro/bmg160: Use millidegrees for temperature scale
Standard unit for temperature is millidegrees Celcius, whereas this driver
was reporting in degrees. Fix the scale factor in the driver.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-03-09 16:55:05 +00:00
Linus Torvalds cf2e8c544c - New Drivers
- Add STMPE ADC Input driver
    - Add STMicroelectronics STPMIC1 Parent driver
    - Add STMicroelectronics STPMIC1 OnKey Misc driver
    - Add STMicroelectronics STPMIC1 Watchdog driver
    - Add Cirrus Logic Lochnagar Parent driver
    - Add TQ-Systems TQMX86 Parent driver
 
  - New Device Support
    - Add support for ADC to STMPE
 
  - New (or moved) Functionality
    - Move Lightbar functionality to its own driver; cros_ec_lightbar
    - Move VBC functionality to its own driver; cros_ec_vbc
    - Move VBC functionality to its own driver; cros_ec_vbc
    - Move DebugFS functionality to its own driver; cros_ec_debugfs
    - Move SYSFS functionality to its own driver; cros_ec_sysfs
    - Add support for input voltage options; tps65218
 
  - Fix-ups
    - Use devm_* managed resources; cros_ec
    - Device Tree documentation; stmpe, aspeed-lpc, lochnagar
    - Trivial Clean-ups; stmpe
    - Rip out broken modular code; aat2870-core, adp5520, as3711,
          db8500-prcmu, htc-i2cpld, max8925-core, rc5t583, sta2x11-mfd,
 	 syscon, tps65090, tps65910, tps68470 tps80031, wm831x-spi,
 	 wm831x-i2c, wm831x-core, wm8350-i2c, wm8350-core, wm8400-core
    - Kconfig fixups; INTEL_SOC_PMIC
    - Improve error path; sm501, sec-core
    - Use struct_size() helper; sm501
    - Constify; at91-usart
    - Use pointers instead of copying data; at91-usart
    - Deliver proper return value; cros_ec_dev
    - Trivial formatting/whitespace; sec-core
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Merge tag 'mfd-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add STMPE ADC Input driver
   - Add STMicroelectronics STPMIC1 Parent driver
   - Add STMicroelectronics STPMIC1 OnKey Misc driver
   - Add STMicroelectronics STPMIC1 Watchdog driver
   - Add Cirrus Logic Lochnagar Parent driver
   - Add TQ-Systems TQMX86 Parent driver

  New Device Support:
   - Add support for ADC to STMPE

  New (or moved) Functionality:
   - Move Lightbar functionality to its own driver; cros_ec_lightbar
   - Move VBC functionality to its own driver; cros_ec_vbc
   - Move VBC functionality to its own driver; cros_ec_vbc
   - Move DebugFS functionality to its own driver; cros_ec_debugfs
   - Move SYSFS functionality to its own driver; cros_ec_sysfs
   - Add support for input voltage options; tps65218

  Fixes:
   - Use devm_* managed resources; cros_ec
   - Device Tree documentation; stmpe, aspeed-lpc, lochnagar
   - Trivial Clean-ups; stmpe
   - Rip out broken modular code; aat2870-core, adp5520, as3711,
         db8500-prcmu, htc-i2cpld, max8925-core, rc5t583, sta2x11-mfd,
	 syscon, tps65090, tps65910, tps68470 tps80031, wm831x-spi,
	 wm831x-i2c, wm831x-core, wm8350-i2c, wm8350-core, wm8400-core
   - Kconfig fixups; INTEL_SOC_PMIC
   - Improve error path; sm501, sec-core
   - Use struct_size() helper; sm501
   - Constify; at91-usart
   - Use pointers instead of copying data; at91-usart
   - Deliver proper return value; cros_ec_dev
   - Trivial formatting/whitespace; sec-core"

* tag 'mfd-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
  mfd: mxs-lradc: Mark expected switch fall-through
  mfd: sec-core: Cleanup formatting to a consistent style
  mfd: tqmx86: IO controller with I2C, Wachdog and GPIO
  mfd: intel-lpss: Move linux/pm.h to the local header
  mfd: cros_ec_dev: Return number of bytes read with CROS_EC_DEV_IOCRDMEM
  mfd: tps68470: Drop unused MODULE_DEVICE_TABLE
  mfd: at91-usart: No need to copy mfd_cell in probe
  mfd: at91-usart: Constify at91_usart_spi_subdev and at91_usart_serial_subdev
  mfd: lochnagar: Add support for the Cirrus Logic Lochnagar
  mfd: lochnagar: Add initial binding documentation
  dt-bindings: mfd: aspeed-lpc: Make parameter optional
  mfd: sec-core: Return gracefully instead of BUG() if device cannot match
  mfd: sm501: Use struct_size() in devm_kzalloc()
  mfd: sm501: Fix potential NULL pointer dereference
  mfd: Kconfig: Fix I2C_DESIGNWARE_PLATFORM dependencies
  mfd: tps65218.c: Add input voltage options
  mfd: wm8400-core: Make it explicitly non-modular
  mfd: wm8350-core: Drop unused module infrastructure from non-modular code
  mfd: wm8350-i2c: Make it explicitly non-modular
  mfd: wm831x-core: Drop unused module infrastructure from non-modular code
  ...
2019-03-08 10:02:58 -08:00
Linus Torvalds e266ca36da Staging/IIO patches for 5.1-rc1
Here is the big staging/iio driver pull request for 5.1-rc1.
 
 Lots of good IIO driver updates and cleanups in here as always.
 Combined with the removal of the xgifb driver, we have a net "loss" of
 over 9000 lines in the pull request, always a nice thing.
 
 As the outreachy application process is currently happening, there are
 loads of tiny checkpatch cleanup fixes all over the staging tree, which
 accounts for the majority of the fixups.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big staging/iio driver pull request for 5.1-rc1.

  Lots of good IIO driver updates and cleanups in here as always.
  Combined with the removal of the xgifb driver, we have a net "loss" of
  over 9000 lines in the pull request, always a nice thing.

  As the outreachy application process is currently happening, there are
  loads of tiny checkpatch cleanup fixes all over the staging tree,
  which accounts for the majority of the fixups"

* tag 'staging-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (341 commits)
  staging: mt7621-dma: remove license boilerplate text
  staging: mt7621-dma: add SPDX GPL-2.0+ license identifier
  Staging: ks7010: Replace typecast to int
  Staging: vt6655: Align a static function declaration
  staging: speakup: fix line over 80 characters.
  staging: mt7621-eth: Remove license boilerplate text
  staging: mt7621-eth: Add SPDX license identifier
  staging: ks7010: removed custom Michael MIC implementation.
  staging: rtl8192e: Fix space and suspect issue
  Staging: vt6655: Modify comment style of SPDX License Identifier
  Staging: vt6655: Modify comment style for SPDX-License-Identifier
  Staging: vt6655: Align a function declaration
  Staging: vt6655: Alignment of function declaration
  staging: rtl8712: Fix indentation issue
  staging: wilc1000: fix incorrent type in initializer
  staging: rtl8188eu: remove unused P2P_PRIVATE_IOCTL_SET_LEN
  staging: rtl8188eu: remove unused enum P2P_PROTO_WK_ID
  staging: rtl8723bs: Remove duplicated include from drv_types.h
  Staging: vt6655: Alignment should match open parenthesis
  staging: erofs: fix mis-acted TAIL merging behavior
  ...
2019-03-06 16:29:27 -08:00
Linus Torvalds e0f0ae838a iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver
The pm8xxx_get_channel() implementation is unclear, and causes gcc to
suddenly generate odd warnings.  The trigger for the warning (at least
for me) was the entirely unrelated commit 79a4e91d1b ("device.h: Add
__cold to dev_<level> logging functions"), which apparently changes gcc
code generation in the caller function enough to cause this:

  drivers/iio/adc/qcom-pm8xxx-xoadc.c: In function ‘pm8xxx_xoadc_probe’:
  drivers/iio/adc/qcom-pm8xxx-xoadc.c:633:8: warning: ‘ch’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    ret = pm8xxx_read_channel_rsv(adc, ch, AMUX_RSV4,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
             &read_nomux_rsv4, true);
             ~~~~~~~~~~~~~~~~~~~~~~~
  drivers/iio/adc/qcom-pm8xxx-xoadc.c:426:27: note: ‘ch’ was declared here
    struct pm8xxx_chan_info *ch;
                             ^~

because gcc for some reason then isn't able to see that the termination
condition for the "for( )" loop in that function is also the condition
for returning NULL.

So it's not _actually_ uninitialized, but the function is admittedly
just unnecessarily oddly written.

Simplify and clarify the function, making gcc also see that it always
returns a valid initialized value.

Cc: Joe Perches <joe@perches.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-06 15:41:29 -08:00
Greg Kroah-Hartman 277c8e8b81 Second set of new device support, features and cleanup for IIO in the 5.1 cycle.
There are a few late breaking fixes in here that weren't worth trying to
 rush into 5.0 as they have been with us for quite a while.
 
 New device support
 * ad7476
   - add support for TI ADS786X parts that are compatible with this Analog
     Devices driver. Good to see some simple devices are so similar.
 * Ingenic jz47xx SoC ADCs
   - new driver and bindings
 * Plantower PMS7003 partical sensor
   - new driver and bindings including vendor prefix.
 * TI DAC7612
   - new driver and bindings for this dual DAC.
 
 New features
 * ad7768-1
   - Sampling frequency control
 * bmi160
   - Data ready trigger support, including open-drain dt binding.
 
 Cleanup / minor fixes.
 * Analog Device DACs
   - Fix some inconsistent licenses.  These are only ones where there were
     two different license marked in the same file, and hence were previously
     unclear.
 * ads124s08
   - Spelling fix.
 * adxl345
   - Parameter alignement tidy up.
 * bmi160
   - SPDX
   - correct a note on the types of supported interrupts which was too strict.
   - use iio_pollfunc_store_time to grab an earlier timestamp.
   - use if (ret) instead of if (ret < 0) to be consistent whilst simplifying
     some handling where ret was effectively getting written to 0 even though
     it was always already 0.
 * exynos_adc
   - Fix a null pointer dereference on unbind.
   - Fix number of channels on Exynos4x12 devices to be 4 rather than 8.
 * lpc32xx-adc
   - Move DT bindings doc out of staging. Oops, I missed this one when
     moving the driver.
   - SPDX.
 * npcm-adc
   - drop documentation of reset node as going to be done differently.
     It's a new driver this cycle so no need to support the previous
     binding going forwards.
 * sps30
   - Fix an issue with a loop timeout test that meant it would never identify
     a timeout.
   - Mark deliberate switch fall throughs.
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Merge tag 'iio-for-5.1b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of new device support, features and cleanup for IIO in the 5.1 cycle.

There are a few late breaking fixes in here that weren't worth trying to
rush into 5.0 as they have been with us for quite a while.

New device support
* ad7476
  - add support for TI ADS786X parts that are compatible with this Analog
    Devices driver. Good to see some simple devices are so similar.
* Ingenic jz47xx SoC ADCs
  - new driver and bindings
* Plantower PMS7003 partical sensor
  - new driver and bindings including vendor prefix.
* TI DAC7612
  - new driver and bindings for this dual DAC.

New features
* ad7768-1
  - Sampling frequency control
* bmi160
  - Data ready trigger support, including open-drain dt binding.

Cleanup / minor fixes.
* Analog Device DACs
  - Fix some inconsistent licenses.  These are only ones where there were
    two different license marked in the same file, and hence were previously
    unclear.
* ads124s08
  - Spelling fix.
* adxl345
  - Parameter alignement tidy up.
* bmi160
  - SPDX
  - correct a note on the types of supported interrupts which was too strict.
  - use iio_pollfunc_store_time to grab an earlier timestamp.
  - use if (ret) instead of if (ret < 0) to be consistent whilst simplifying
    some handling where ret was effectively getting written to 0 even though
    it was always already 0.
* exynos_adc
  - Fix a null pointer dereference on unbind.
  - Fix number of channels on Exynos4x12 devices to be 4 rather than 8.
* lpc32xx-adc
  - Move DT bindings doc out of staging. Oops, I missed this one when
    moving the driver.
  - SPDX.
* npcm-adc
  - drop documentation of reset node as going to be done differently.
    It's a new driver this cycle so no need to support the previous
    binding going forwards.
* sps30
  - Fix an issue with a loop timeout test that meant it would never identify
    a timeout.
  - Mark deliberate switch fall throughs.

* tag 'iio-for-5.1b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (26 commits)
  iio: adc: exynos-adc: Use proper number of channels for Exynos4x12
  dt-binding: iio: remove rst node from NPCM ADC document
  dt-bindings: iio: chemical: pms7003: add device tree support
  dt-bindings: add Plantower to the vendor prefixes
  iio: chemical: add support for Plantower PMS7003 sensor
  iio:chemical:sps30 Supress some switch fallthrough warnings.
  iio:adc:lpc32xx use SPDX-License-Identifier
  dt-bindings: iio: adc: move lpc32xx-adc out of staging
  iio: adc: ads124s08: fix spelling mistake "converions" -> "conversions"
  iio: adc: exynos-adc: Fix NULL pointer exception on unbind
  iio: chemical: sps30: fix a loop timeout test
  iio:accel:adxl345: Change alignment to match paranthesis
  iio:dac:dac7612: device tree bindings
  iio:dac:ti-dac7612: Add driver for Texas Instruments DAC7612
  iio: adc: ad7476: Add support for TI ADS786X ADCs
  iio: adc: ad7768-1: Add support for setting the sampling frequency
  drivers: iio: dac: Fix wrong license for ADI drivers
  IIO: add Ingenic JZ47xx ADC driver.
  dt-bindings: iio/adc: Add bindings for Ingenic JZ47xx SoCs ADC.
  dt-bindings: iio/adc: Add docs for Ingenic JZ47xx SoCs ADC.
  ...
2019-02-13 08:24:50 +01:00
Krzysztof Kozlowski 103cda6a3b iio: adc: exynos-adc: Use proper number of channels for Exynos4x12
Exynos4212 and Exynos4412 have only four ADC channels so using
"samsung,exynos-adc-v1" compatible (for eight channels ADCv1) on them is
wrong.  Add a new compatible for Exynos4x12.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-12 20:56:00 +00:00
Tomasz Duszynski a1d642266c iio: chemical: add support for Plantower PMS7003 sensor
Add support for Plantower PMS7003 particulate matter sensor.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-11 20:19:33 +00:00
Jonathan Cameron 59b9bb0abc iio:chemical:sps30 Supress some switch fallthrough warnings.
Fixes warnings reported on linux-next but marking one path
and adding an explicit return in the other.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Brauchli <a.brauchli@elementarea.net>
Acked-by: Tomasz Duszynski <tduszyns@gmail.com>
2019-02-11 20:07:51 +00:00
Greg Kroah-Hartman 3b6effbc38 Merge 5.0-rc6 into staging-next
We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-11 09:25:01 +01:00
Gregory CLEMENT 4305834936 iio:adc:lpc32xx use SPDX-License-Identifier
Convert the driver to SPDX license description which allow removing
several lines in the file.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:03 +00:00
Colin Ian King fc4e0c97d1 iio: adc: ads124s08: fix spelling mistake "converions" -> "conversions"
There is a spelling mistake in several dev_err messages. Fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:03 +00:00
Krzysztof Kozlowski 2ea8bab4dd iio: adc: exynos-adc: Fix NULL pointer exception on unbind
Fix NULL pointer exception on device unbind when device tree does not
contain "has-touchscreen" property.  In such case the input device is
not registered so it should not be unregistered.

    $ echo "12d10000.adc" > /sys/bus/platform/drivers/exynos-adc/unbind

    Unable to handle kernel NULL pointer dereference at virtual address 00000474
    ...
    (input_unregister_device) from [<c0772060>] (exynos_adc_remove+0x20/0x80)
    (exynos_adc_remove) from [<c0587d5c>] (platform_drv_remove+0x20/0x40)
    (platform_drv_remove) from [<c05860f0>] (device_release_driver_internal+0xdc/0x1ac)
    (device_release_driver_internal) from [<c0583ecc>] (unbind_store+0x60/0xd4)
    (unbind_store) from [<c031b89c>] (kernfs_fop_write+0x100/0x1e0)
    (kernfs_fop_write) from [<c029709c>] (__vfs_write+0x2c/0x17c)
    (__vfs_write) from [<c0297374>] (vfs_write+0xa4/0x184)
    (vfs_write) from [<c0297594>] (ksys_write+0x4c/0xac)
    (ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)

Fixes: 2bb8ad9b44 ("iio: exynos-adc: add experimental touchscreen support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:03 +00:00
Dan Carpenter 905889b4a3 iio: chemical: sps30: fix a loop timeout test
The "while (tries--) {" loop is a postop so it exits with "tries" set
to -1.

Fixes: 232e0f6dde ("iio: chemical: add support for Sensirion SPS30 sensor")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:02 +00:00
Luciana da Costa Marques d4cd36220e iio:accel:adxl345: Change alignment to match paranthesis
Align broken line to match upper line parenthesis. Solves the
checkpatch.pl's message:

CHECK: Alignment should match open parenthesis

Signed-off-by: Luciana da Costa Marques <lucianadacostamarques@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:02 +00:00
Ricardo Ribalda Delgado 977724d205 iio:dac:ti-dac7612: Add driver for Texas Instruments DAC7612
It is a driver for Texas Instruments Dual, 12-Bit Serial Input
Digital-to-Analog Converter.

Datasheet of this chip:
http://www.ti.com/lit/ds/sbas106/sbas106.pdf

Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:02 +00:00
Ricardo Ribalda Delgado 77c5a7f5c1 iio: adc: ad7476: Add support for TI ADS786X ADCs
Add support for Texas Instruments ADS7866, ADS7867 and ADS7868
8/10/12 bit Single channel ADC.

Datasheet: http://www.ti.com/lit/ds/symlink/ads7868.pdf

Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:02 +00:00
Stefan Popa e9517dffd1 iio: adc: ad7768-1: Add support for setting the sampling frequency
The AD7768-1 core ADC receives a master clock signal (MCLK). The MCLK
frequency combined with the MCLK division and the digital filter
decimation rates, determines the sampling frequency. Along with
MCLK_DIV, the power mode is also configured according to datasheet
recommendations.

From user space, available sampling frequencies can be read. However,
it is not required for an exact value to be entered, since the driver
will look for the closest available match.

When the device configuration changes (for example, if the filter
decimation rate changes), a SYNC_IN pulse is required.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:01 +00:00
Stefan Popa cbd5dd387a drivers: iio: dac: Fix wrong license for ADI drivers
Analog Devices drivers are typically GPL v2 only. This patch fixes the
inconsistencies between the module license and SPDX.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:01 +00:00
Artur Rojek 1a78daea10 IIO: add Ingenic JZ47xx ADC driver.
Add an IIO driver for the ADC hardware present on Ingenic JZ47xx SoCs.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 18:46:01 +00:00
Martin Kelly 94edaac707 iio:bmi160: use if (ret) instead of if (ret < 0)
We are using "if (ret < 0)" in many places in which the function returns 0
on success. Use "if (ret)" instead for better clarity and correctness.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 15:25:25 +00:00
Martin Kelly 0a3f50e4d6 iio:bmi160: use iio_pollfunc_store_time
Currently, we snap the timestamp after reading from the buffer and
processing the event. When the IIO poll function is triggered by an
interrupt,  we can get a slightly more accurate timestamp by snapping it
prior to reading the data, since the data was already generated prior to
entering the trigger handler. This is not going to make a huge difference,
but we might as well improve slightly.

Do this by using iio_pollfunc_store_time as other drivers do.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 15:24:27 +00:00
Martin Kelly 895bf81e6b iio:bmi160: add drdy interrupt support
Add interrupt support for the data ready signal on the BMI160, which fires
an interrupt whenever new accelerometer/gyroscope data is ready to read.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 15:14:42 +00:00
Martin Kelly 3740232925 iio:bmi160: add SPDX identifiers
Add SPDX identifiers (GPL 2) for the BMI160 driver. bmi160.h had an
identifier, but the other files did not.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-09 14:48:33 +00:00
Greg Kroah-Hartman 1dcc3ed4a7 First set of new device support, features and cleanup for IIO in the 5.1 cycle
A number of interesting new devices supported plus a good set of staging
 cleanup including one graduation and one drop.
 
 New device support
 * ad56886
   - Add support for AD5674R/AD5679R with some minor driver changes to support
     more channels.
 * ad7768
   - New driver and dt bindings for this 24 bit ADC.
 * max44009
   - New driver and dt bindings for this ambient light sensor.
 * mpu6050
   - Support the ICM 20602 IMU. Minor tweaks due to slightly different
     register map.
 * NPCM adc
   - New driver and dt bindings for this BMC ADC.
 * Sensiron SGP30
   - Modifiers for ethanol and H2.
   - New driver and dt bindings.
   - Follow patch added self cleaning support.
 * Sensiron SPS30
   - New channel type for mass concentration.
   - New driver and bindings.
   - Minor tidy up patch followed (drop fmt specifier as unused)
 * st_pressure
   - lps22hh support. ID plus information structures and dt bindings.
 * ti-ads124s08
   - Add binding doc and driver.
 
 Staging graduations
 * ad7606 driver and bindings.
 
 Staging drops
 * ad7152 CDC driver dropped.  This part is near EoL and no one is known
   to be using it.  If anyone surfaces obviously we can bring the driver
   back.  If not, good to drop it to avoid wasting anyone's time cleaning
   it up.
 
 New features
 * bme680
   - DT support and bindings doc.
 * isl29018
   - Add regulator for VCC.
 * mag3110
   - Add regulators for supplies.
 * meson-saradc
   - Support the temperature sensors of more SoCs.
 * mma8452
   - Add regulators for power suplies and binding docs to reflect them.
 * st-accel
   - Support the undocumented but it seems fairly common _ONT ACPI method
     to specify orientation of the sensor.
 
 Cleanup, minor fixes and fixes for staging driver that have been broken a
 long time
 * ad5933
   - Drop platform data alternative to specifying the reference voltage
     using a regulator.
   - Use the clock framework to contorl the reference clock.
   - Add a DT binding doc to cover the defacto binding.
 * ad7280a
   - Split up some big functions to improve readability.
 * ad7606
   - Allow for timeout if interrupt never occurs.
   - Use devm functions to simplify probe and remove.
   - Use the find_closest macro to avoid need for precise values from
     userspace.
   - Add missing vendor prefixes for various DT properties. Note the
     driver is in staging still and there are no known devicetrees.
   - Add explict OF device ID table.
   - Simplify the Kconfig choices
   - Change to a threaded IRQ.
   - SPDX and simple stype fixes.
 * ad7816
   - Drop unnecessary variable init.
 * ad9523
   - Check a return value that was ignored.
 * ad9833
   - Drop platform data.  It was just setting most values to the hardware
     defaults.
   - Use the clock framework to provide the input clock.
 * adt7316 (lots of staging cleanup)
   - Fix some wrong register / bit definitions
   - Invert the logic of the check for an ldac pin so it actually makes sense.
   - Read the right register to get internal vref settings
   - Allow adt751x chips to use the internal vref for all DAC channels rather
     than a subset.
   - Remove dac vref bypass control from parts that don't have one.
   - Make the store DAC update mode function consistent with the show one.
   - Fix some spellings and other minor tidy up.
   - Avoid passing irq numbers around by putting all the irq logic in
     one place.
   - Fix an issue with the resolution of DAC control.
   - Fix support of the high resolution DAC mode (for temp proportional output)
     where supported.
   - Fix DAC read and write calculations.
 * st_lsm6dsx
   - Drop an unused variable (set but not read)
 * xilinx-xadc
   - Check an unhandled return value.
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Merge tag 'iio-for-5.1a' 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 cleanup for IIO in the 5.1 cycle

A number of interesting new devices supported plus a good set of staging
cleanup including one graduation and one drop.

New device support
* ad56886
  - Add support for AD5674R/AD5679R with some minor driver changes to support
    more channels.
* ad7768
  - New driver and dt bindings for this 24 bit ADC.
* max44009
  - New driver and dt bindings for this ambient light sensor.
* mpu6050
  - Support the ICM 20602 IMU. Minor tweaks due to slightly different
    register map.
* NPCM adc
  - New driver and dt bindings for this BMC ADC.
* Sensiron SGP30
  - Modifiers for ethanol and H2.
  - New driver and dt bindings.
  - Follow patch added self cleaning support.
* Sensiron SPS30
  - New channel type for mass concentration.
  - New driver and bindings.
  - Minor tidy up patch followed (drop fmt specifier as unused)
* st_pressure
  - lps22hh support. ID plus information structures and dt bindings.
* ti-ads124s08
  - Add binding doc and driver.

Staging graduations
* ad7606 driver and bindings.

Staging drops
* ad7152 CDC driver dropped.  This part is near EoL and no one is known
  to be using it.  If anyone surfaces obviously we can bring the driver
  back.  If not, good to drop it to avoid wasting anyone's time cleaning
  it up.

New features
* bme680
  - DT support and bindings doc.
* isl29018
  - Add regulator for VCC.
* mag3110
  - Add regulators for supplies.
* meson-saradc
  - Support the temperature sensors of more SoCs.
* mma8452
  - Add regulators for power suplies and binding docs to reflect them.
* st-accel
  - Support the undocumented but it seems fairly common _ONT ACPI method
    to specify orientation of the sensor.

Cleanup, minor fixes and fixes for staging driver that have been broken a
long time
* ad5933
  - Drop platform data alternative to specifying the reference voltage
    using a regulator.
  - Use the clock framework to contorl the reference clock.
  - Add a DT binding doc to cover the defacto binding.
* ad7280a
  - Split up some big functions to improve readability.
* ad7606
  - Allow for timeout if interrupt never occurs.
  - Use devm functions to simplify probe and remove.
  - Use the find_closest macro to avoid need for precise values from
    userspace.
  - Add missing vendor prefixes for various DT properties. Note the
    driver is in staging still and there are no known devicetrees.
  - Add explict OF device ID table.
  - Simplify the Kconfig choices
  - Change to a threaded IRQ.
  - SPDX and simple stype fixes.
* ad7816
  - Drop unnecessary variable init.
* ad9523
  - Check a return value that was ignored.
* ad9833
  - Drop platform data.  It was just setting most values to the hardware
    defaults.
  - Use the clock framework to provide the input clock.
* adt7316 (lots of staging cleanup)
  - Fix some wrong register / bit definitions
  - Invert the logic of the check for an ldac pin so it actually makes sense.
  - Read the right register to get internal vref settings
  - Allow adt751x chips to use the internal vref for all DAC channels rather
    than a subset.
  - Remove dac vref bypass control from parts that don't have one.
  - Make the store DAC update mode function consistent with the show one.
  - Fix some spellings and other minor tidy up.
  - Avoid passing irq numbers around by putting all the irq logic in
    one place.
  - Fix an issue with the resolution of DAC control.
  - Fix support of the high resolution DAC mode (for temp proportional output)
    where supported.
  - Fix DAC read and write calculations.
* st_lsm6dsx
  - Drop an unused variable (set but not read)
* xilinx-xadc
  - Check an unhandled return value.

* tag 'iio-for-5.1a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (67 commits)
  iio: chemical: sps30: remove printk format specifier
  staging: iio: frequency: ad9833: Load clock using clock framework
  staging: iio: frequency: ad9833: Get frequency value statically
  dt-bindings: iio: light: Add max44009
  iio: light: add driver for MAX44009
  dt-bindings: iio: adc: Add docs for AD7768-1
  iio: adc: Add AD7768-1 ADC basic support
  staging: iio: cdc: ad7152: remove driver completely
  iio: imu: mpu6050: Add support for the ICM 20602 IMU
  dt-bindings: iio: imu: add icm20602 bindings to mpu6050
  dt-bindings: iio: pressure: add LPS22HH bindings
  iio: st_accel: use ACPI orientation data
  iio: adc: add NPCM ADC driver
  dt-binding: iio: add NPCM ADC documentation
  iio: chemical: sps30: allow changing self cleaning period
  dt-bindings: iio: chemical: Add bindings for bme680
  iio: chemical: bme680: Add device-tree support
  iio:st_pressure:initial lps22hh sensor support
  iio: accell: mma8452: add vdd/vddio regulator operation support
  dt-bindings: iio: accel: mma8452: add power supplies property
  ...
2019-02-04 07:06:36 +01:00
Greg Kroah-Hartman 6d923f8fe8 First set of IIO fixes for the 5.0 cycle.
Been a busy month, so these are rather later than they should have been.
 
 * atlas-ph-sensor:
   - Temperature scale didn't correspond to the ABI.
 * axp288:
   - A few different fixes around the TS-pin handling.
 * ti-ads8688
   - Not enough space in the buffer used to build the scan to allow for
     the timestamp.
 * tools - iio_generic_buffer
   - Make num_loops signed so that we really are running for ever
     rather than just a long time when we specify -1.
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Merge tag 'iio-fixes-5.0a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 5.0 cycle.

Been a busy month, so these are rather later than they should have been.

* atlas-ph-sensor:
  - Temperature scale didn't correspond to the ABI.
* axp288:
  - A few different fixes around the TS-pin handling.
* ti-ads8688
  - Not enough space in the buffer used to build the scan to allow for
    the timestamp.
* tools - iio_generic_buffer
  - Make num_loops signed so that we really are running for ever
    rather than just a long time when we specify -1.

* tag 'iio-fixes-5.0a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: ti-ads8688: Update buffer allocation for timestamps
  tools: iio: iio_generic_buffer: make num_loops signed
  iio: adc: axp288: Fix TS-pin handling
  iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
2019-02-03 13:10:41 +01:00
Tomasz Duszynski 3fa30bf700 iio: chemical: sps30: remove printk format specifier
pr_fmt is used by printk wrappers. There are not any in the driver
code so remove the format specifier.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-02 17:08:06 +00:00
Robert Eshleman 6aef699a7d iio: light: add driver for MAX44009
The MAX44009 is a low-power ambient light sensor from Maxim
Integrated. It differs from the MAX44000 in that it doesn't have
proximity sensing and that it requires far less current (1 micro-amp
vs 5 micro-amps). The register mapping and feature set between the
two are different enough to require a new driver for the MAX44009.

Developed and tested with a BeagleBone Black and UDOO Neo (i.MX6SX)

Supported features:

* Reading lux (processed value)

* Rising and falling illuminance threshold
  events

* Configuring integration time

https://datasheets.maximintegrated.com/en/ds/MAX44009.pdf

Signed-off-by: Robert Eshleman <bobbyeshleman@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-02 15:47:46 +00:00
Stefan Popa a5f8c7da3d iio: adc: Add AD7768-1 ADC basic support
The ad7768-1 is a single channel, precision 24-bit analog to digital
converter (ADC).

This basic patch configures the device in fast mode, with 32 kSPS and
leaves the default sinc5 filter.

Two data conversion modes are made available. When data is retrieved by
using the read_raw attribute, one shot single conversion mode is set.
The continuous conversion mode is enabled when the triggered buffer
mechanism is used. To assure correct data retrieval, the driver waits
for the interrupt triggered by the low to high transition of the DRDY
pin.

Datasheets:
Link: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7768-1.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-02 10:28:56 +00:00
Randolph Maaßen 22904bdff9 iio: imu: mpu6050: Add support for the ICM 20602 IMU
The Invensense ICM-20602 is a 6-axis MotionTracking device that
combines a 3-axis gyroscope and an 3-axis accelerometer. It is very
similar to the ICM-20608 imu which is already supported by the mpu6050
driver. The main difference is that the ICM-20602 has the i2c bus
disable bit in a separate register.

Signed-off-by: Randolph Maaßen <gaireg@gaireg.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-02 09:52:21 +00:00
Daniel Drake f38ab20b74 iio: st_accel: use ACPI orientation data
Platform-specific ST accelerometer mount matrix information can be
provided by returning a package of 6 integers from the ACPI _ONT
method. This has been seen on Acer products such as Veriton Z4860G,
Z6860G and A890, which include a ST SMO8840 sensor. We have also
confirmed experimentally that the Windows driver uses such information.

The _ONT data format was explained by a ST vendor contact. However,
strangely enough, the _ONT transformations must be applied after first
applying another mount matrix which we determined experimentally. ST
have not commented on why this is the case, but we imagine that perhaps
earlier devices (before _ONT was introduced) required this translation
and hence it became 'standard.'

Interpret the _ONT data and export the equivalent mount matrix to
userspace.

If no _ONT data is present, no mount matrix is exported.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-02-02 09:28:51 +00:00
Lee Jones fa56a62d01 Merge branches 'ib-mfd-iio-input-5.1', 'ib-mfd-input-watchdog-5.1' and 'ib-mfd-platform-5.1' into ibs-for-mfd-merged 2019-02-01 08:20:04 +00:00
Tomer Maimon 9bf85fbc9d iio: adc: add NPCM ADC driver
Add Nuvoton NPCM BMC Analog-to-Digital Converter(ADC) driver.

The NPCM ADC is a 10-bit converter for eight channel inputs.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-19 18:58:54 +00:00
Tomasz Duszynski 62129a0849 iio: chemical: sps30: allow changing self cleaning period
Sensor can periodically trigger self cleaning. Period can be changed by
writing a new value to a dedicated attribute. Upon attribute read
current period gets returned.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-19 17:56:34 +00:00
Sebastien Bourdelin f7da884578 iio: chemical: bme680: Add device-tree support
This commit allow the driver to work with device-tree.

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@gmail.com>
Acked-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-19 17:41:35 +00:00
mario tesi e5aab7b0d8 iio:st_pressure:initial lps22hh sensor support
Initial support for ST LPS22HH pressure sensor. Datasheet:
http://www2.st.com/resource/en/datasheet/lps22hh.pdf

Features:
 * pressure, temperature data and timestamping channels
 * sampling frequency selection [1..200] Hz
 * interrupt based trigger
 * over I2C or SPI interface

Signed-off-by: mario tesi <mario.tesi@st.com>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-19 17:32:41 +00:00
Stefan Agner 9f3d084965 iio: adc: add STMPE ADC driver using IIO framework
This adds an ADC driver for the STMPE device using the industrial
input/output interface. The driver supports raw reading of values.
The driver depends on the MFD STMPE driver. If the touchscreen
block is enabled too, only four of the 8 ADC channels are available.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-01-16 12:37:04 +00:00
Linus Torvalds 9deb9e1637 - New Device Support
- Add support for Power Supply to AXP813
    - Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
    - Add support for UART to Exynos LPASS
 
  - Fix-ups
    - Use supplied MACROS; ti_am335x_tscadc
    - Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
    - Regmap changes; bd9571mwv, wm5110-tables
    - Kconfig dependencies; MFD_AT91_USART
    - Supply shared data for child-devices; madera-core
    - Use new of_node_name_eq() API call; max77620, stmpe
    - Use managed resources (devm_*); tps65218
    - Comment descriptions; ingenic-tcu
    - Coding style; madera-core
 
  - Bug Fixes
    - Fix section mismatches; twl-core, db8500-prcmu
    - Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
    - IRQ related fixes; tps6586x
    - Ensure proper initialisation sequence; qcom_rpm
    - Repair potential memory leak; cros_ec_dev
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Merge tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Device Support
   - Add support for Power Supply to AXP813
   - Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
   - Add support for UART to Exynos LPASS

  Fix-ups:
   - Use supplied MACROS; ti_am335x_tscadc
   - Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
   - Regmap changes; bd9571mwv, wm5110-tables
   - Kconfig dependencies; MFD_AT91_USART
   - Supply shared data for child-devices; madera-core
   - Use new of_node_name_eq() API call; max77620, stmpe
   - Use managed resources (devm_*); tps65218
   - Comment descriptions; ingenic-tcu
   - Coding style; madera-core

  Bug Fixes:
   - Fix section mismatches; twl-core, db8500-prcmu
   - Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
   - IRQ related fixes; tps6586x
   - Ensure proper initialisation sequence; qcom_rpm
   - Repair potential memory leak; cros_ec_dev"

* tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (25 commits)
  mfd: exynos-lpass: Enable UART module support
  mfd: mc13xxx: Fix a missing check of a register-read failure
  mfd: cros_ec: Add commands to control codec
  mfd: madera: Remove spurious semicolon in while loop
  mfd: rave-sp: Fix typo in rave_sp_checksum comment
  mfd: ingenic-tcu: Fix bit field description in header
  mfd: tps65218: Use devm_regmap_add_irq_chip and clean up error path in probe()
  mfd: Use of_node_name_eq() for node name comparisons
  mfd: cros_ec_dev: Add missing mfd_remove_devices() call in remove
  mfd: axp20x: Add supported cells for AXP803
  mfd: axp20x: Re-align MFD cell entries
  mfd: axp20x: Add AC power supply cell for AXP813
  mfd: wm5110: Add missing ASRC rate register
  mfd: qcom_rpm: write fw_version to CTRL_REG
  mfd: tps6586x: Handle interrupts on suspend
  mfd: madera: Add shared data for accessory detection
  mfd: at91-usart: Add platform dependency
  mfd: bd9571mwv: Add volatile register to make DVFS work
  mfd: ab8500-core: Return zero in get_register_interruptible()
  mfd: tmio: Typo s/use use/use/
  ...
2019-01-15 06:24:36 +12:00
Anson Huang f6ff49b8a3 iio: accell: mma8452: add vdd/vddio regulator operation support
The accelerometer's power supply could be controllable on some
platforms, such as i.MX6Q-SABRESD board, the mma8451's power supplies
are controlled by a GPIO fixed regulator, need to make sure the
regulators are enabled before any communication with mma8451, this
patch adds vdd/vddio regulator operation support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 19:11:26 +00:00
Anson Huang 1a02d12393 iio: light: isl29018: add vcc regulator operation support
The light sensor's power supply could be controllable by regulator
on some platforms, such as i.MX6Q-SABRESD board, the light sensor
isl29023's power supply is controlled by a GPIO fixed regulator,
need to make sure the regulator is enabled before any operation of
sensor, this patch adds vcc regulator operation support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 19:02:00 +00:00
Anson Huang 1dca9bdec6 iio: magnetometer: mag3110: add vdd/vddio regulator operation support
The magnetometer's power supplies could be controllable on some platforms,
such as i.MX6Q-SABRESD board, the mag3110's power supplies are controlled
by a GPIO fixed regulator, need to make sure the regulators are enabled
before any communication with mag3110, this patch adds vdd/vddio regulator
operation support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 19:00:23 +00:00
Mircea Caprioru 192778fb96 iio: dac: ad5686: Add support for AD5674R/AD5679R
The AD5674R/AD5679R are low power, 16-channel, 12-/16-bit buffered voltage
output digital-to-analog converters (DACs). They include a 2.5 V internal
reference (enabled by default).

These devices are very similar to AD5684R/AD5686R, except that they have 16
channels.

Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 18:58:21 +00:00
Dan Murphy e717f8c6df iio: adc: Add the TI ads124s08 ADC code
Introduce the TI ADS124S08 and the ADS124S06 ADC
devices from TI.  The ADS124S08 is the 12 channel ADC
and the ADS124S06 is the 6 channel ADC device

These devices share a common datasheet:
http://www.ti.com/lit/gpn/ads124s08

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 18:42:39 +00:00
Dan Murphy f214ff521f iio: ti-ads8688: Update buffer allocation for timestamps
Per Jonathan Cameron, the buffer needs to allocate room for a
64 bit timestamp as well as the channels.  Change the buffer
to allocate this additional space.

Fixes: 2a86487786 ("iio: adc: ti-ads8688: add trigger and buffer support")
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 18:32:28 +00:00
Hans de Goede 9bcf15f75c iio: adc: axp288: Fix TS-pin handling
Prior to this commit there were 3 issues with our handling of the TS-pin:

1) There are 2 ways how the firmware can disable monitoring of the TS-pin
for designs which do not have a temperature-sensor for the battery:
a) Clearing bit 0 of the AXP20X_ADC_EN1 register
b) Setting bit 2 of the AXP288_ADC_TS_PIN_CTRL monitoring

Prior to this commit we were unconditionally setting both bits to the
value used on devices with a TS. This causes the temperature protection to
kick in on devices without a TS, such as the Jumper ezbook v2, causing
them to not charge under Linux.

This commit fixes this by using regmap_update_bits when updating these 2
registers, leaving the 2 mentioned bits alone.

The next 2 problems are related to our handling of the current-source
for the TS-pin. The current-source used for the battery temp-sensor (TS)
is shared with the GPADC. For proper fuel-gauge and charger operation the
TS current-source needs to be permanently on. But to read the GPADC we
need to temporary switch the TS current-source to ondemand, so that the
GPADC can use it, otherwise we will always read an all 0 value.

2) Problem 2 is we were writing hardcoded values to the ADC TS pin-ctrl
register, overwriting various other unrelated bits. Specifically we were
overwriting the current-source setting for the TS and GPIO0 pins, forcing
it to 80ųA independent of its original setting. On a Chuwi Vi10 tablet
this was causing us to get a too high adc value (due to a too high
current-source) resulting in the following errors being logged:

ACPI Error: AE_ERROR, Returned by Handler for [UserDefinedRegion]
ACPI Error: Method parse/execution failed \_SB.SXP1._TMP, AE_ERROR

This commit fixes this by using regmap_update_bits to change only the
relevant bits.

3) After reading the GPADC channel we were unconditionally enabling the
TS current-source even on devices where the TS-pin is not used and the
current-source thus was off before axp288_adc_read_raw call.

This commit fixes this by making axp288_adc_set_ts a nop on devices where
the ADC is not enabled for the TS-pin.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1610545
Fixes: 3091141d78 ("iio: adc: axp288: Fix the GPADC pin ...")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 17:09:55 +00:00
Matt Ranostay 0808831dc6 iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
IIO_TEMP scale value for temperature was incorrect and not in millicelsius
as required by the ABI documentation.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Fixes: 27dec00ecf (iio: chemical: add Atlas pH-SM sensor support)
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 17:06:49 +00:00
Aditya Pakki 7fc93f3285 iio: adc: xilinx: check return value of xadc_write_adc_reg
In function xadc_probe, xadc_write_adc_reg can return an error value
when write fails. The fix checks for the return value consistent with
other invocations of the latter function.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-05 16:44:02 +00:00
Martin Blumenstingl b002bf5f8d iio: adc: meson-saradc: enable the temperature sensor two more SoCs
Meson8b and Meson8m2 use the same logic to convert the ADC register
value to celsius, which is different from Meson8:
- Meson8 has different multiplier and divider values
- Meson8 uses a 4-bit TSC (temperature sensor coefficient) which fits
  into the 4-bit field in the MESON_SAR_ADC_DELTA_10 register:
  MESON_SAR_ADC_DELTA_10_TS_C_MASK. Meson8b and Meson8m2 have a 5-bit
  TSC which requires writing the upper-most bit into the
  MESON_HHI_DPLL_TOP_0[9] register from the HHI register area.

This adds support for the temperature sensor on the Meson8b and Meson8m2
SoCs by implementing the logic to write the upper-most TSC bit into the
HHI register area. The SoC-specific values (temperature_trimming_bits,
temperature_multiplier, temperature_divider) are added - these simply
integrate into the existing infrastructure (which was implemented for
Meson8) and thus require no further changes to the existing temperature
calculation logic.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-05 16:42:05 +00:00
Stefan Popa 2985a5d884 staging: iio: adc: ad7606: Move out of staging
Move ad7606 ADC driver out of staging and into the mainline.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-05 16:10:59 +00:00
Kangjie Lu ae0b377372 iio: ad9523: fix a missing check of return value
If ad9523_write() fails, indio_dev may get incorrect data. The fix
inserts a check for the return value of ad9523_write(), and it fails,
returns an error.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-05 16:10:50 +00:00
Tomasz Duszynski c546d49656 iio: chemical: sps30: add support for self cleaning
Self cleaning is especially useful in cases where sensor undergoes
frequent power on/off cycles. In such scenarios it is recommended to
turn self cleaning at least once per week in order to maintain reliable
measurements.

Self cleaning is activated by writing 1 to a dedicated attribute.
Internal fan accelerates to its maximum speed and keeps spinning
for about 10 seconds blowing out accumulated dust.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Tested-by: Andreas Brauchli <andreas.brauchli@sensirion.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-05 16:10:39 +00:00
Linus Torvalds 02061181d3 Staging/IIO driver patches for 4.21-rc1
Here is the big staging and iio driver pull request for 4.21-rc1.
 
 Lots and lots of tiny patches here, nothing major at all.  Which is
 good, tiny cleanups is nice to see.  No new huge driver removal or
 addition, this release cycle, although there are lots of good IIO driver
 changes, addtions, and movement from staging into the "real" part of the
 kernel, which is always great.
 
 Full details are in the shortlog, and all of these 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-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the big staging and iio driver pull request for 4.21-rc1.

  Lots and lots of tiny patches here, nothing major at all. Which is
  good, tiny cleanups is nice to see. No new huge driver removal or
  addition, this release cycle, although there are lots of good IIO
  driver changes, addtions, and movement from staging into the "real"
  part of the kernel, which is always great.

  Full details are in the shortlog, and all of these have been in
  linux-next for a while with no reported issues"

* tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (553 commits)
  staging: mt7621-mmc: Correct spelling mistakes in comments
  staging: wilc1000: fix missing read_write setting when reading data
  mt7621-mmc: char * array declaration might be better as static const
  mt7621-mmc: return statement in void function unnecessary
  mt7621-mmc: Alignment should match open parenthesis
  mt7621-mmc: Removed unnecessary blank lines
  mt7621-mmc: Fix some coding style issues
  staging: android: ashmem: doc: Fix spelling
  staging: rtl8188eu: cleanup brace coding style issues
  staging: rtl8188eu: add spaces around '&' in rtw_mlme_ext.c
  staging: rtl8188eu: change return type of is_basicrate() to bool
  staging: rtl8188eu: simplify null array initializations
  staging: rtl8188eu: change order of declarations to improve readability
  staging: rtl8188eu: make some arrays static in rtw_mlme_ext.c
  staging: rtl8188eu: constify some arrays
  staging: rtl8188eu: convert unsigned char arrays to u8
  staging: rtl8188eu: remove redundant declaration in rtw_mlme_ext.c
  staging: rtl8188eu: remove unused arrays WFD_OUI and WMM_INFO_OUI
  staging: rtl8188eu: remove unnecessary parentheses in rtw_mlme_ext.c
  staging: rtl8188eu: remove unnecessary comments in rtw_mlme_ext.c
  ...
2018-12-28 20:39:58 -08:00
Linus Torvalds c76cd634eb platform-drivers-x86 for v4.21-1
The USB Power Delivery discrete components now can be enumerated by
 i2c-multi-instantiate driver via several resources under single ACPI
 device node (ACPI ID is INT3515).
 
 Touchscreen support is added for the Mediacom Flexbook Edge 11.
 
 Mellanox driver got fixed due to updates in their firmware.
 
 The power management stub driver for AtomISP v2 is fixed in order to support
 Intel Baytrail SoCs where same quirk is needed for S0ix to work.
 
 Special key handling has been fixed for Favorites hotkey on Thinkpad, and
 Screen LOCK on ASUS.
 
 Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been updated
 to support this.
 
 Few cleanups related to debugfs have been made in Intel IPS and
 Intel PMC drivers. Besides that Intel PMC has been extended
 to show more detailed information about Latency Tolerance.
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI / scan:
  -  Create platform device for INT3515 ACPI nodes
 
 Add the VLV ISP PCI ID to atomisp2_pm:
  - Add the VLV ISP PCI ID to atomisp2_pm
 
 asus-nb-wmi:
  -  Drop mapping of 0x33 and 0x34 scan codes
  -  Map 0x35 to KEY_SCREENLOCK
 
 asus-wmi:
  -  Tell the EC the OS will handle the display off hotkey
 
 dell-laptop:
  -  Mark expected switch fall-throughs
 
 Documentation/ABI:
  -  Add new attribute for mlxreg-io sysfs interfaces
 
 Fix config space access for intel_atomisp2_pm:
  - Fix config space access for intel_atomisp2_pm
 
 i2c:
  -  acpi: Introduce i2c_acpi_get_i2c_resource() helper
  -  acpi: Use ACPI_FAILURE instead of !ACPI_SUCCESS
  -  acpi: Return error pointers from i2c_acpi_new_device()
 
 i2c-multi-instantiate:
  -  Allow to have same slaves
  -  Introduce IOAPIC IRQ support
  -  Distinguish IRQ resource type
  -  Count I2cSerialBus() resources
  -  Get rid of obsolete conditional
  -  Defer probe when no adapter found
  -  Accept errors of i2c_acpi_new_device()
 
 ideapad-laptop:
  -  Add Yoga 2 13 to no_hw_rfkill list
 
 iio:
  -  inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
 
 intel_cht_int33fe:
  -  Get rid of obsolete conditional
  -  Accept errors of i2c_acpi_new_device()
  -  Remove duplicate NULL check
 
 intel_ips:
  -  Convert to use DEFINE_SHOW_ATTRIBUTE macro
  -  Remove never happen condition
  -  NULL check before some freeing functions is not needed
  -  remove unnecessary checks in ips_debugfs_init
 
 intel_pmc_core:
  -  convert to DEFINE_SHOW_ATTRIBUTE
  -  Decode Snoop / Non Snoop LTR
  -  Fix LTR IGNORE Max offset
  -  Show Latency Tolerance info
 
 intel_telemetry:
  -  convert to DEFINE_SHOW_ATTRIBUTE
 
 mlx-platform:
  -  Convert to use SPDX identifier
  -  Allow mlxreg-io driver activation for new systems
  -  Fix LED configuration
  -  Fix tachometer registers
  -  Rename new systems product names
  -  Add definitions for new registers
 
 thinkpad_acpi:
  -  Cleanup quirks macros
  -  Change the keymap for Favorites hotkey
 
 touchscreen_dmi:
  -  Add info for the Mediacom Flexbook Edge 11
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Merge tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - The USB Power Delivery discrete components now can be enumerated by
   i2c-multi-instantiate driver via several resources under single ACPI
   device node (ACPI ID is INT3515).

 - Touchscreen support is added for the Mediacom Flexbook Edge 11.

 - Mellanox driver got fixed due to updates in their firmware.

 - The power management stub driver for AtomISP v2 is fixed in order to
   support Intel Baytrail SoCs where same quirk is needed for S0ix to
   work.

 - Special key handling has been fixed for Favorites hotkey on Thinkpad,
   and Screen LOCK on ASUS.

 - Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been
   updated to support this.

 - Few cleanups related to debugfs have been made in Intel IPS and Intel
   PMC drivers. Besides that Intel PMC has been extended to show more
   detailed information about Latency Tolerance

* tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86: (41 commits)
  platform/x86: mlx-platform: Convert to use SPDX identifier
  Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
  platform/x86: mlx-platform: Allow mlxreg-io driver activation for new systems
  platform/x86: mlx-platform: Fix LED configuration
  platform/x86: mlx-platform: Fix tachometer registers
  platform/x86: mlx-platform: Rename new systems product names
  platform/x86: mlx-platform: Add definitions for new registers
  platform/x86: intel_telemetry: convert to DEFINE_SHOW_ATTRIBUTE
  platform/x86: intel_pmc_core: convert to DEFINE_SHOW_ATTRIBUTE
  platform/x86: thinkpad_acpi: Cleanup quirks macros
  platform/x86: touchscreen_dmi: Add info for the Mediacom Flexbook Edge 11
  platform/x86: Fix config space access for intel_atomisp2_pm
  platform/x86: Add the VLV ISP PCI ID to atomisp2_pm
  platform/x86: intel_ips: Convert to use DEFINE_SHOW_ATTRIBUTE macro
  platform/x86: intel_ips: Remove never happen condition
  platform/x86: intel_ips: NULL check before some freeing functions is not needed
  platform/x86: intel_ips: remove unnecessary checks in ips_debugfs_init
  iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
  ACPI / scan: Create platform device for INT3515 ACPI nodes
  platform/x86: i2c-multi-instantiate: Allow to have same slaves
  ...
2018-12-25 11:04:17 -08:00
YueHaibing 6a4b8937a3 iio: imu: st_lsm6dsx: remove set but not used variable ''
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c: In function 'st_lsm6dsx_shub_read_reg':
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c:108:41: warning:
 variable 'hub_settings' set but not used [-Wunused-but-set-variable]

It never used since introduction in commit c91c1c844e ("iio: imu: st_lsm6dsx:
add i2c embedded controller support")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-22 16:58:14 +00:00
Andreas Brauchli ce51412416 iio: chemical: sgp30: Support Sensirion SGP30/SGPC3 sensors
Support Sensirion SGP30 and SGPC3 multi-pixel I2C gas sensors

Supported Features:

* Indoor Air Quality (IAQ) concentrations for
  - tVOC (in_concentration_voc_input)
  - CO2eq (in_concentration_co2_input) - SGP30 only

  IAQ concentrations are periodically read out by a background thread
  to allow the sensor to maintain its internal baseline.

* Gas concentration signals
  - Ethanol (in_concentration_ethanol_raw)
  - H2 (in_concentration_h2_raw) - SGP30 only

https://www.sensirion.com/file/datasheet_sgp30
https://www.sensirion.com/file/datasheet_sgpc3

Signed-off-by: Andreas Brauchli <andreas.brauchli@sensirion.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-16 14:05:58 +00:00
Tomasz Duszynski 232e0f6dde iio: chemical: add support for Sensirion SPS30 sensor
Add support for Sensirion SPS30 particulate matter sensor.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-16 14:05:58 +00:00
Tomasz Duszynski 17abc9ec68 iio: add IIO_MASSCONCENTRATION channel type
Measuring particulate matter in ug / m3 (micro-grams per cubic meter)
is de facto standard. Existing air quality sensors usually follow
this convention and are capable of returning measurements using
this unit.

IIO currently does not offer suitable channel type for this
type of measurements hence this patch adds this.

In addition, extra modifiers are introduced used for distinguishing
between fine pm1, pm2p5 and coarse pm4, pm10 particle measurements, i.e
IIO_MOD_PM1, IIO_MOD_PM25 and IIO_MOD_PM4, IIO_MOD_PM10.

pmX consists of particles with aerodynamic diameter less or equal to
X micrometers.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-16 14:05:57 +00:00
Greg Kroah-Hartman c6cbcdea7a Second set of IIO new device support, features and cleanups for the 4.21 cycle.
Staging graduation
 * ad2s90
   - Driver for this resolver to digital chip.
 
 New drivers and device support.
 * ad5686
   - Add support for ad5310r DAC and associated fix in value read back.
 * exynos-adc
   - Support for S5PV210 which is slightly different from other parts.
 * mcp41010
   - Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
   MCP42100 microchip potentiometers.
 
 New ACPI ids.
 * ak8975
   - AKM9911 ACPI HID.
 * kxcjk-1013
   - KXJ2109 ACPI HID.
   - KIOX010A ACPI HID.
 
 New features
 * ad5933
   - Explicit DT binding.
 * ad2s90
   - Explicit DT binding including dropping spi setup that is done via dt
     in favour of verifying the settings form DT.
 * adt7316
   - Explicit DT binding and support for gpio, irq_flags etc.
 * stm32-adc
   - Runtime power management.
 
 Minor fixes and cleanups
 * core
   - Protect against missing info structure.
 * ad2s90
   - SPDX
   - Add documentation fo the mutex.
 * ad7280a
   - Check allocation failure.
   - Fix an accidental replacement of an error return.
 * adt7316
   - Switch some variables to be local and rename for consistency with other
     drivers.
   - Revert a false handling of 0 as an error introduced earlier this cycle.
 * bmi160
   - Use devm functions throughout probe() to avoid need for remove().
 * hid-sensor-hub
   - White space cleanup.
 * hts221
   - MAINTAINERS entry.
 * lis302
   - Use generic name in the DT binding doc.
 * Messon-saradc
   - Check for allocation error.
   - Fix some presented clock names that break clk debugfs.
 * qcom-spmi-adc
   - A fix for initialization of the prescale property. Came late in the
     cycle, so merge window is probably the best route for this.
 * st_lsm6dsx
   - Allow for variable read length to support wider range of slave devices.
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Merge tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO new device support, features and cleanups for the 4.21 cycle.

Staging graduation
* ad2s90
  - Driver for this resolver to digital chip.

New drivers and device support.
* ad5686
  - Add support for ad5310r DAC and associated fix in value read back.
* exynos-adc
  - Support for S5PV210 which is slightly different from other parts.
* mcp41010
  - Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
  MCP42100 microchip potentiometers.

New ACPI ids.
* ak8975
  - AKM9911 ACPI HID.
* kxcjk-1013
  - KXJ2109 ACPI HID.
  - KIOX010A ACPI HID.

New features
* ad5933
  - Explicit DT binding.
* ad2s90
  - Explicit DT binding including dropping spi setup that is done via dt
    in favour of verifying the settings form DT.
* adt7316
  - Explicit DT binding and support for gpio, irq_flags etc.
* stm32-adc
  - Runtime power management.

Minor fixes and cleanups
* core
  - Protect against missing info structure.
* ad2s90
  - SPDX
  - Add documentation fo the mutex.
* ad7280a
  - Check allocation failure.
  - Fix an accidental replacement of an error return.
* adt7316
  - Switch some variables to be local and rename for consistency with other
    drivers.
  - Revert a false handling of 0 as an error introduced earlier this cycle.
* bmi160
  - Use devm functions throughout probe() to avoid need for remove().
* hid-sensor-hub
  - White space cleanup.
* hts221
  - MAINTAINERS entry.
* lis302
  - Use generic name in the DT binding doc.
* Messon-saradc
  - Check for allocation error.
  - Fix some presented clock names that break clk debugfs.
* qcom-spmi-adc
  - A fix for initialization of the prescale property. Came late in the
    cycle, so merge window is probably the best route for this.
* st_lsm6dsx
  - Allow for variable read length to support wider range of slave devices.

* tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (37 commits)
  iio: adc: qcom-spmi-adc5: Initialize prescale properly
  dt-bindings: iio: adc: exynos-adc: Add S5PV210 variant
  iio: adc: Allow selection of Exynos ADC on S5PV210
  iio: adc: exynos-adc: Add S5PV210 variant
  iio: bmi160: use all devm functions in probe
  iio: dac: ad5686: fix bit shift read register
  iio:dac:ad5686: Add AD5310R support
  Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0"
  dt-bindings: iio: accel: use a generic node name for lis302
  iio: core: check 'info' value before registering the device
  staging: iio: adc: ad7280a: fix overwrite of the returned value
  staging: iio: adc: ad7280a: check for devm_kasprint() failure
  iio: humidity: hts221: add entry in MAINTAINERS file
  iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID
  staging:iio:ad2s90: Move out of staging
  staging:iio:ad2s90: Add comment to device state mutex
  staging:iio:ad2s90: Replace license text w/ SPDX identifier
  dt-bindings:iio:resolver: Add docs for ad2s90
  staging:iio:ad2s90: Add max frequency check at probe
  staging:iio:ad2s90: Remove spi setup that should be done via dt
  ...
2018-12-13 13:37:24 +01:00
Evan Green db23d88756 iio: adc: qcom-spmi-adc5: Initialize prescale properly
adc5_get_dt_data uses a local, prop, feeds it to adc5_get_dt_channel_data,
and then puts the result into adc->chan_props. The problem is
adc5_get_dt_channel_data may not initialize that structure fully, so a
garbage value is used for prescale if the optional "qcom,pre-scaling" is
not defined in DT. adc5_read_raw then uses this as an array index,
generating a crash that looks like this:

[    6.683186] Unable to handle kernel paging request at virtual address ffffff90e78c7964
Call trace:
qcom_vadc_scale_code_voltage_factor+0x74/0x104
qcom_vadc_scale_hw_calib_die_temp+0x20/0x60
qcom_adc5_hw_scale+0x78/0xa4
adc5_read_raw+0x3d0/0x65c
iio_channel_read+0x240/0x30c
iio_read_channel_processed+0x10c/0x150
qpnp_tm_get_temp+0xc0/0x40c
of_thermal_get_temp+0x7c/0x98
thermal_zone_get_temp+0xac/0xd8
thermal_zone_device_update+0xc0/0x38c
qpnp_tm_probe+0x624/0x81c
platform_drv_probe+0xe4/0x11c
really_probe+0x188/0x3fc
driver_probe_device+0xb8/0x188
__device_attach_driver+0x114/0x180
bus_for_each_drv+0xd8/0x118
__device_attach+0x180/0x27c
device_initial_probe+0x20/0x2c
bus_probe_device+0x78/0x124
deferred_probe_work_func+0xfc/0x138
process_one_work+0x3d8/0x8b0
process_scheduled_works+0x48/0x6c
worker_thread+0x488/0x7cc
kthread+0x24c/0x264
ret_from_fork+0x10/0x18

Unfortunately, when I went to add the initializer for this and tried to
boot it, my machine shut down immediately, complaining that it was
hotter than the sun. It appears that adc5_chans_pmic and adc5_chans_rev2
were initializing prescale_index as if it were directly a divisor,
rather than the index into adc5_prescale_ratios that it is.

Fix the uninitialized value, and change the static initialization to use
indices into adc5_prescale_ratios.

Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:45:30 +00:00
Jonathan Bakker d1655c7f48 iio: adc: Allow selection of Exynos ADC on S5PV210
Make it possible to use Exynos ADC driver on S5PV210 based devices.

Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:19:32 +00:00
Jonathan Bakker 882bf52fde iio: adc: exynos-adc: Add S5PV210 variant
S5PV210's ADC variant is almost the same as v1 except that it has 10
channels and doesn't require the pmu register

Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:15:05 +00:00
Martin Kelly 6e9982918c iio: bmi160: use all devm functions in probe
Currently, we're using the devm version of some but not all functions.
Switch to the devm version of iio_triggered_buffer_setup and
iio_device_register to simplify the code a bit and decrease the chance of
bugs.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-10 21:15:41 +00:00
Mircea Caprioru 0e76df5c97 iio: dac: ad5686: fix bit shift read register
This patch solves the register readback issue with the bit shift. When the
dac resolution was lower than the register size (ex. 12 bits out of 16
bits) the readback value was not shifted with the difference in bits and
the value was higher. Also a mask is applied on the read value in order to
get the value relative to the actual bit size.

Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 15:45:09 +00:00
Stefan Popa 12d323cf6d iio:dac:ad5686: Add AD5310R support
The AD5310R is a single channel DAC with 10-bit precision, which is
part of the same family as AD5311R, except that it uses the spi interface
instead of i2c. The device has a built-in 2.5V reference which is enabled
by default.

Another important difference is that the SPI write command operation is
16 bits long. The first four bits represent the command, while the
remaining 12 bits are for data. In the control reg, DB9 and DB10 are used
for power-down modes, while DB8 is the REF bit. In order to accommodate
this change, a new regmap type was defined and checked accordingly.

Because AD5310R does not have a readback register, the read_raw operation
will return "Operation is not supported".

Datasheet:
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310R_5311R.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 15:35:55 +00:00
Andi Shyti d45ebf1f98 iio: core: check 'info' value before registering the device
When the 'info' structure inside indio_dev is left uninitialized,
a segmentation fault occurs.

Check the 'info' value before using it and if it is equal to
NULL, return with -EINVAL.

Signed-off-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 11:06:41 +00:00
Andy Shevchenko e278558a1f iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
ACPI provides a generic helper to get I2C Serial Bus resources.
Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-03 21:40:03 +02:00
Vignesh R 4b3ab9372f iio: adc: ti_am335x_tscadc: Improve accuracy of measurement
When performing single ended measurements with TSCADC, its recommended
to set negative input (SEL_INM_SWC_3_0) of ADC step to ADC's VREFN in the
corresponding STEP_CONFIGx register.

Also, the positive(SEL_RFP_SWC_2_0) and negative(SEL_RFM_SWC_1_0)
reference voltage for ADC step needs to be set to VREFP and VREFN
respectively in STEP_CONFIGx register.
Without these changes, there may be variation of as much as ~2% in the
ADC's digital output which is bad for precise measurement.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-12-03 11:33:20 +00:00
Greg Kroah-Hartman d5d12ce229 Merge 4.20-rc5 into staging-next
We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-03 07:55:28 +01:00
Stephan Gerhold 0a9ff2a13b iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID
This HID is used on the ASUS MeMO Pad 7 (ME176C) tablet.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-01 16:05:56 +00:00