Commit Graph

432 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
3ceefa3ffd Second set of IIO new device support, features and cleanups.
There are also a couple of fixes that can wait for the coming merge
 window.
 
 Core new features
 
 * Support for phase channels (used in time of flight sensors amongst
   other things)
 * Support for deep UV light channel modifier.
 
 New Device Support
 
 * AD4758 DAC
   - New driver and dt bindings.
 * adxl345
   - Support the adxl375 +-200g part which is register compatible.
 * isl29501 Time of flight sensor.
   - New driver
 * meson-saradc
   - Support the Meson8m2 Socs - right now this is just an ID, but there will
     be additional difference in future.
 * mpu6050
   - New ID for 6515 variant.
 * si1133 UV sensor.
   - New driver
 * Spreadtrum SC27xx PMIC ADC
   - New driver and dt bindings.
 
 Features
 
 * adxl345
   - Add calibration offset readback and writing.
   - Add sampling frequency control.
 
 Fixes and Cleanups
 
 * ad5933
   - Use a macro for the channel definition to reduce duplication.
 * ad9523
   - Replace use of core mlock with a local lock. Part of ongoing efforts
     to avoid confusing the purpose of mlock which is only about iio core
     state changes.
   - Fix displayed phase which was out by a factor of 10.
 * adxl345
   - Add a link to the datasheet.
   - Rework the use of the address field in the chan_spec structures to
     allow addition of more per channel information.
 * adis imu
   - Mark switch fall throughs.
 * at91-sama5d2
   - Fix some casting on big endian systems.
 * bmp280
   - Drop some DT elements that aren't used and should mostly be done from
     userspace rather than in DT.
 * hx711
   - add clock-frequency dt binding and resulting delay to deal with capacitance
     issue on some boards.
   - fix a spurious unit-address in the example.
 * ina2xx
   - Avoid a possible kthread_stop with a stale task_struct.
 * ltc2632
   - Remove some unused local variables (assigned but value never used).
 * max1363
   - Use device_get_match_data to remove some boilerplate.
 * mma8452
   - Mark switch fall throughs.
 * sca3000
   - Fix a missing return in a switch statement (a bad fallthrough
     previously!)
 * sigma-delta-modulator
   - Drop incorrect unit address from the DT example.
 * st_accel
   - Use device_get_match_data to drop some boiler plate.
   - Move to probe_new for i2c driver as second parameter not used.
 * st_sensors library
   - Use a strlcpy (safe in this case).
 * st_lsm6dsx
   - Add some error logging.
 * ti-ads7950
   - SPDX
   - Allow simultaneous buffered and polled reads. Needed on a Lego Mindstorms
     EV3 where some channels are used for power supply monitoring at a very low
     rate.
 * ti-dac5571
   - Remove an unused variable.
 * xadc
   - Drop some dead code.
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Merge tag 'iio-for-4.19b' 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.

There are also a couple of fixes that can wait for the coming merge
window.

Core new features

* Support for phase channels (used in time of flight sensors amongst
  other things)
* Support for deep UV light channel modifier.

New Device Support

* AD4758 DAC
  - New driver and dt bindings.
* adxl345
  - Support the adxl375 +-200g part which is register compatible.
* isl29501 Time of flight sensor.
  - New driver
* meson-saradc
  - Support the Meson8m2 Socs - right now this is just an ID, but there will
    be additional difference in future.
* mpu6050
  - New ID for 6515 variant.
* si1133 UV sensor.
  - New driver
* Spreadtrum SC27xx PMIC ADC
  - New driver and dt bindings.

Features

* adxl345
  - Add calibration offset readback and writing.
  - Add sampling frequency control.

Fixes and Cleanups

* ad5933
  - Use a macro for the channel definition to reduce duplication.
* ad9523
  - Replace use of core mlock with a local lock. Part of ongoing efforts
    to avoid confusing the purpose of mlock which is only about iio core
    state changes.
  - Fix displayed phase which was out by a factor of 10.
* adxl345
  - Add a link to the datasheet.
  - Rework the use of the address field in the chan_spec structures to
    allow addition of more per channel information.
* adis imu
  - Mark switch fall throughs.
* at91-sama5d2
  - Fix some casting on big endian systems.
* bmp280
  - Drop some DT elements that aren't used and should mostly be done from
    userspace rather than in DT.
* hx711
  - add clock-frequency dt binding and resulting delay to deal with capacitance
    issue on some boards.
  - fix a spurious unit-address in the example.
* ina2xx
  - Avoid a possible kthread_stop with a stale task_struct.
* ltc2632
  - Remove some unused local variables (assigned but value never used).
* max1363
  - Use device_get_match_data to remove some boilerplate.
* mma8452
  - Mark switch fall throughs.
* sca3000
  - Fix a missing return in a switch statement (a bad fallthrough
    previously!)
* sigma-delta-modulator
  - Drop incorrect unit address from the DT example.
* st_accel
  - Use device_get_match_data to drop some boiler plate.
  - Move to probe_new for i2c driver as second parameter not used.
* st_sensors library
  - Use a strlcpy (safe in this case).
* st_lsm6dsx
  - Add some error logging.
* ti-ads7950
  - SPDX
  - Allow simultaneous buffered and polled reads. Needed on a Lego Mindstorms
    EV3 where some channels are used for power supply monitoring at a very low
    rate.
* ti-dac5571
  - Remove an unused variable.
* xadc
  - Drop some dead code.
2018-07-25 10:12:07 +02:00
Maxime Roussin-Bélanger
e01e7eaf37 iio: light: introduce si1133
e-mail received from Silicon Lab to confirm that the licensing
isn't a problem.

"
Dear Maxime Roussin-Belanger,

The LUX calculation code only works with Si1133.
As long as the software is used with Silicon Lab's sensor product,
I don't see any problem.

Regards,
Tony
"

Signed-off-by: Maxime Roussin-Bélanger <maxime.roussinbelanger@gmail.com>
Reviewed-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-07-23 19:18:11 +01:00
Colin Ian King
288320f6e9 iio: tsl2x7x/tsl2772: avoid potential division by zero
It may be possible for tsl2772_get_lux to return a zero lux value
and hence a division by zero can occur when lux_val is zero. Check
for this case and return -ERANGE to avoid the division by zero.

Detected by CoverityScan, CID#1469484 ("Division or modulo by zero")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-06-24 14:22:38 +01:00
Brian Masney
4833dc4bb9 iio: tsl2583: correct values in integration_time_available
The times reported by the in_illuminance_integration_time_available
sysfs attribute are actually in milliseconds, not microseconds. This
patch corrects the times with the correct unit.

The fixes tag is inaccurate as the issue existed when the driver
was still in staging.   However, lots of changes occured before
it graduated so this is as a good a point as any for backports.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Fixes: f44d5c8ac3 ("staging: iio: tsl2583: move out of staging")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-05-20 10:29:28 +01:00
Brian Masney
c06c4d7935 staging: iio: tsl2x7x/tsl2772: move out of staging
Move the tsl2772 driver out of staging and into mainline.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-05-12 12:40:04 +01:00
Gwendal Grignou
5a0b8cb466 iio: cros_ec: Move cros_ec_sensors_core.h in /include
Similar to other common iio frameworks, move cros_ec_sensors_core.h from
drivers/iio/common/cros_ec_sensors/ to include/linux/iio/common.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-03-17 19:59:20 +00:00
Rodrigo Siqueira
67464a54e5 iio: Replace occurrences of magic number 0 by IIO_CHAN_INFO_RAW
Usually, functions responsible for reading raw data typically relies on
values from iio_chan_info_enum to correctly identify the type of data to
be read. There is a set of a device driver that uses the magic number 0
instead of IIO_CHAN_INFO_RAW. This patch improves the readability by
replaces the magic number 0 for the appropriate IIO_CHAN_INFO_RAW in six
devices driver in the IIO subsystem.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-03-07 20:14:36 +00:00
Jeff LaBundy
0f07954715 iio: light: lv0104cs: Add support for LV0104CS light sensor
This patch adds support for the On Semiconductor LV0104CS ambient
light sensor.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-03-03 15:16:57 +00:00
Gwendal Grignou
0dad1eceeb iio: cros_ec: Relax sampling frequency before suspending
If an application set a tight sampling frequency, given the interrupt
use is a wakeup source, suspend will not happen: the kernel will receive
a wake up interrupt and will cancel the suspend process.

Given cros_ec sensors type is non wake up, this patch adds prepare and
complete callbacks to set 1s sampling period just before suspend. This
ensures the sensor hub will not be a source of interrupt during the
suspend process.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-03-03 15:02:58 +00:00
Matt Ranostay
d6ad805844 iio: add SPDX identifier for various drivers
Add GPLv2+ SPDX identifier and update email for author's drivers.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-18 11:55:19 +00:00
Colin Ian King
debbbbef06 iio: light: make a couple of config structures static
Structures st_uvis25_i2c_regmap_config and st_uvis25_spi_regmap_config are
local to the source and do not need to be in global scope, so make them
both static.

Cleans up sparse warnings:
warning: symbol 'st_uvis25_i2c_regmap_config' was not declared. Should
it be static?
warning: symbol 'st_uvis25_spi_regmap_config' was not declared. Should
it be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 16:03:41 +01:00
Lorenzo Bianconi
3025c8688c iio: light: add support for UVIS25 sensor
add support for STMicroelectronics UVIS25 uv sensor
http://www.st.com/resource/en/datasheet/uvis25.pdf

- continuos mode support
- i2c support
- spi support
- trigger mode support
- system PM support

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-12-02 10:41:25 +00:00
Peter Meerwald-Stadler
8556f51498 iio: light: Add driver for IDT ZOPT2201 ambient light and UVB sensor
Driver for 20-bit ALS and UV B sensor with I2C interface exposing
the following API:
  in_uvindex_input
  in_illuminance_raw
  in_illuminance_scale
  in_illuminance_scale_available
  in_intensity_uv_raw
  in_intensity_uv_scale
  in_intensity_uv_scale_available
  integration_time
  integration_time_available

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-12-02 10:39:48 +00:00
Paolo Cretaro
5f045af0b5 iio: cros_ec: Remove unused variables
Fix gcc warnings about variable 'ec_device' being set but not used
in these files:
common/cros_ec_sensors/cros_ec_sensors.c:194:25
light/cros_ec_light_prox.c:184:25

Signed-off-by: Paolo Cretaro <paolocretaro@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-12-02 10:39:44 +00:00
Linus Torvalds
449fcf3ab0 Staging/IIO patches for 4.15-rc1
Here is the "big" staging and IIO driver update for 4.15-rc1.
 
 Lots and lots of little changes, almost all minor code cleanups as the
 Outreachy application process happened during this development cycle.
 Also happened was a lot of IIO driver activity, and the typec USB code
 moving out of staging to drivers/usb (same commits are in the USB tree
 on a persistent branch to not cause merge issues.)
 
 Overall, it's a wash, I think we added a few hundred more lines than
 removed, but really only a few thousand were modified at all.
 
 All of these have been in linux-next for a while.  There might be a
 merge issue with Al's vfs tree in the pi433 driver (take his changes,
 they are always better), and the media tree with some of the odd atomisp
 cleanups (take the media tree's version).
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

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

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

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

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

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

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

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

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

How this work was done:

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

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

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

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

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

All documentation files were explicitly excluded.

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

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

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

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

   and resulted in the first patch in this series.

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

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

   and resulted in the second patch in this series.

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

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

   and that resulted in the third patch in this series.

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

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

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

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

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

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

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

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

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

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

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

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

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Stefan Brüns
3525d7cfb7 iio: light: vl6180: Correct ALS scale for non-default gain/integration time
The reported scale was only correct for the default settings of 100 ms
integration time and gain 1.

This aligns the reported scale with the behaviour of any other IIO driver
and the documented ABI, but may require userspace changes if someone uses
non-default settings.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09 20:50:21 +01:00
Stefan Brüns
e794bf6751 iio: light: vl6180: Cleanup als_gain lookup, avoid register readback
Instead of manually iterating the array of allowed gain values, use
find_closest. Storing the current gain setting avoids accessing the
hardware on each query.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09 20:50:15 +01:00
Stefan Brüns
df698c0402 iio: light: vl6180: Avoid readback of integration time register
Instead of reading the value from the register on each query, store the
set value.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09 20:50:10 +01:00
Stefan Brüns
1e2ed3d0d2 iio: light: vl6180: Move range check to integration time setter, cleanup
This improves code uniformity (range checks for als_gain are also done
in the setter). Also unmangle rounding and calculation of register value.

The calculated integration time it_ms is required in the next patch of
the series.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09 20:50:08 +01:00
Akinobu Mita
9d2f715d59 iio: light: tcs3472: support out-of-threshold events
The TCS3472 device provides interrupt signal for out-of-threshold events
with persistence filter.

This change adds interrupt support for the threshold events and enables
to configure the period of time by persistence filter.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-09-03 18:10:29 +01:00
Jonathan Cameron
4166b47c2b iio:light: drop assign iio_info.driver_module and iio_trigger_ops.owner
The equivalent of both of these are now done via macro magic when
the relevant register calls are made.  The actual structure
elements will shortly go away.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-08-22 21:31:57 +01:00
Greg Kroah-Hartman
5e47adb906 Second set of IIO new device support, features and cleanup for the 4.14 cycle.
New device support:
 * ak8974
   - support the AMI306.
 * st_magnetometer
   - add support for the LIS2MDL with bindings.
 * rockchip-saradc
   - add binding for rv1108 SoC (no driver change).
 * srf08
   - add srf02 (i2c only) and srf10 support.
 * stm32-timer
   - support for the STM32H7 to existing driver.
 
 Features:
 * tools
   - move over to the tools buildsystem rather than hand rolling.
   - add an install section to the build.
 * ak8974
   - use serial number to add device randomness.
   - add AMI306 calibration data output.
 * ccs811
   - triggered buffer support.
 * srf08
   - add a device tree table as the old style i2c probing is going away,
   - add triggered buffer support
 * st32-adc
   - add optional st,min-sample-time-nsecs binding to allow control of
     sampling against analog circuitry.
 * stm32-timer
   - add output compare triggers.
 * ti-ads1015
   - add threshold event support.
 * ti-ads7950
   - Allow use on ACPI platforms including providing a default reference
     voltage as there is no way to obtain this on ACPI currently.
 
 Cleanup and fixes:
 * ad7606
   - fix an error return code in probe.
 * ads1015
   - fix incorrect data rate setting update when capture in progress,
   - fix wrong scale information for the ADS1115,
   - make conversions work when CONFIG_PM is not set,
   - make sure we don't get a stale result after a runtime resume by
     ensuring we wait long enough,
   - avoid returning a false error form the buffer setup callbacks,
   - add enough wait time to get the correct conversion,
   - remove an unnecessary config register update,
   - add a helper to set conversion mode reducing repeated boilerplate,
   - use devm_iio_triggered_buffer_setup to simplify error and remove
     paths,
   - use iio_device_claim_direct_mode instead of opencoding the same.
 * ak8974
   - mark the INT_CLEAR register as precious to prevent debugfs access.
 * apds9300
   - constify the i2c_device_id.
 * at91-sama5 adc
   - add missing Kconfig dependency.
 * bma180 accel
   - constify the i2c_device_id.
 * rockchip_saradc
   - explicitly request exclusive reset control as part of the reset rework
     on going throughout the kernel.
 * st_accel
   - fix drdy configuration for a load of accelerometers that only have
     the int1 line.  Fix is unimportant as presumably no deviec tree actually
     used the non existent hardware line.
 * st_pressure
   - fix drdy configuration for LPS22HB and LPS25H by dropping int2 support
     as they don't have this. Fix is unimportant as presumably no device tree
     actually used the non existent hardware line.
 * stm32-dac
   - explicitly request exclusive reset control (part of reset being reworked).
 * tsl2583
   - constify the i2c_device_id.
 * xadc
   - coding style fixes.
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Merge tag 'iio-for-4.14b' 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 4.14 cycle.

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

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

Cleanup and fixes:
* ad7606
  - fix an error return code in probe.
* ads1015
  - fix incorrect data rate setting update when capture in progress,
  - fix wrong scale information for the ADS1115,
  - make conversions work when CONFIG_PM is not set,
  - make sure we don't get a stale result after a runtime resume by
    ensuring we wait long enough,
  - avoid returning a false error form the buffer setup callbacks,
  - add enough wait time to get the correct conversion,
  - remove an unnecessary config register update,
  - add a helper to set conversion mode reducing repeated boilerplate,
  - use devm_iio_triggered_buffer_setup to simplify error and remove
    paths,
  - use iio_device_claim_direct_mode instead of opencoding the same.
* ak8974
  - mark the INT_CLEAR register as precious to prevent debugfs access.
* apds9300
  - constify the i2c_device_id.
* at91-sama5 adc
  - add missing Kconfig dependency.
* bma180 accel
  - constify the i2c_device_id.
* rockchip_saradc
  - explicitly request exclusive reset control as part of the reset rework
    on going throughout the kernel.
* st_accel
  - fix drdy configuration for a load of accelerometers that only have
    the int1 line.  Fix is unimportant as presumably no deviec tree actually
    used the non existent hardware line.
* st_pressure
  - fix drdy configuration for LPS22HB and LPS25H by dropping int2 support
    as they don't have this. Fix is unimportant as presumably no device tree
    actually used the non existent hardware line.
* stm32-dac
  - explicitly request exclusive reset control (part of reset being reworked).
* tsl2583
  - constify the i2c_device_id.
* xadc
  - coding style fixes.
2017-08-20 10:42:42 -07:00
Arvind Yadav
3282fa3c0a iio: light: tsl2583: constify i2c_device_id
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-20 10:17:23 +01:00
Arvind Yadav
a6e5de9375 iio: light: apds9300: constify i2c_device_id
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-20 10:16:48 +01:00
Greg Kroah-Hartman
8652892ed4 Merge 4.13-rc5 into staging-next
We need it here for iio fixes.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-14 13:35:22 -07:00
Greg Kroah-Hartman
055655a9f0 First set of IIO fixes for the 4.13 cycle.
* ad2s1210
   - Fix negative angular velocity reads (identified by a gcc 7 warning)
 * aspeed-adc
   - Wait for initialization sequence to finish before enabling channels.
   Without it no channels work.
 * axp288
   - Revert a patch that dropped some bogus register mods.  No one is entirely
   sure why but it breaks charging on some devices.
   - Fix GPADC pin read returning 0. Turns out a small sleep is needed.
 * bmc150
   - Make sure device is restored to normal state after suspend / resume
   cycle.  Otherwise, simple sysfs reads are broken.
 * tsl2563
   - fix wrong event code.
 * st-accel
   - add spi 3-wire support. Needed to fix the lsm303agr accelerometer
   which only had 3 wires in all cases.  Side effect is to enable optional
   3-wire support for other devices.
 * st-pressure
   - disable multiread by default for LPS22HB (only effects SPI)
 * sun4i-gpadc-iio
   - fix unbalanced irq enable / disable
 * vf610
   - Fix VALT slection for REFSEL bits - ensures we are using the
   right reference pins.
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Merge tag 'iio-fixes-for-4.13a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 4.13 cycle.

* ad2s1210
  - Fix negative angular velocity reads (identified by a gcc 7 warning)
* aspeed-adc
  - Wait for initialization sequence to finish before enabling channels.
  Without it no channels work.
* axp288
  - Revert a patch that dropped some bogus register mods.  No one is entirely
  sure why but it breaks charging on some devices.
  - Fix GPADC pin read returning 0. Turns out a small sleep is needed.
* bmc150
  - Make sure device is restored to normal state after suspend / resume
  cycle.  Otherwise, simple sysfs reads are broken.
* tsl2563
  - fix wrong event code.
* st-accel
  - add spi 3-wire support. Needed to fix the lsm303agr accelerometer
  which only had 3 wires in all cases.  Side effect is to enable optional
  3-wire support for other devices.
* st-pressure
  - disable multiread by default for LPS22HB (only effects SPI)
* sun4i-gpadc-iio
  - fix unbalanced irq enable / disable
* vf610
  - Fix VALT slection for REFSEL bits - ensures we are using the
  right reference pins.
2017-07-23 20:54:31 -07:00
Mikko Koivunen
e12ffd241c iio: light: rpr0521 triggered buffer
Set up and use triggered buffer if there is irq defined for device in
device tree. Trigger producer triggers from rpr0521 drdy interrupt line.
Trigger consumer reads rpr0521 data to scan buffer.
Depends on previous commits of _scale and _offset.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-04 20:46:28 +01:00
Akinobu Mita
ea5c6e262c iio: light: tcs3472: add link to datasheet
Add a link to the TCS3472 datasheet in the AMS's website.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-01 10:23:06 +01:00
Akinobu Mita
53d7d8139f iio: light: tcs3472: fix ATIME register write
The integration time is controlled by the ATIME register only.  However,
this register is written by i2c_smbus_write_word_data() in write_raw().

We actually don't need to write a subsequent register.  So just use
i2c_smbus_write_byte_data() instead.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-07-01 10:16:49 +01:00
Akinobu Mita
a3507e48d3 iio: light: tsl2563: use correct event code
The TSL2563 driver provides three iio channels, two of which are raw ADC
channels (channel 0 and channel 1) in the device and the remaining one
is calculated by the two.  The ADC channel 0 only supports programmable
interrupt with threshold settings and this driver supports the event but
the generated event code does not contain the corresponding iio channel
type.

This is going to change userspace ABI.  Hopefully fixing this to be
what it should always have been won't break any userspace code.

Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-06-24 20:42:49 +01:00
Greg Kroah-Hartman
7bf1e44f86 Merge 4.12-rc5 into staging-next
We want the IIO fixes and other staging driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-12 08:20:47 +02:00
Mikko Koivunen
9ece370b02 iio: light: rpr0521 channel numbers reordered
Move proximity channel from last to first in structs to avoid confusion
later with buffered triggers. Proximity data output is first in rpr0521
register map.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:15 +01:00
Mikko Koivunen
734c442303 iio: light: rpr0521 proximity offset read/write
Add sysfs read/write proximity offset feature. Offset is read/write from
sensor registers. Values are proximity raw 10-bit values. After applying
offset value, output values will be (measured_raw - offset_value). Output
values are unsigned so offset value doesn't make output negative.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:15 +01:00
Mikko Koivunen
c91a88ef84 iio: light: rpr0521 sample_frequency read/write
Add sysfs read/write sample frequency.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:14 +01:00
Mikko Koivunen
624c389e10 iio: light: rpr0521 whitespace fixes
Just whitespace change, no functional changes.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:13 +01:00
Mikko Koivunen
ae5916501b iio: light: rpr0521 magic number to sizeof() on value read
Changed magic number to sizeof() on value read.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:12 +01:00
Mikko Koivunen
484c314b90 iio: light: rpr0521 on-off sequence change for CONFIG_PM
Refactor _set_power_state(), _resume() and _suspend().
Enable measurement only when needed, not in _init(). System can suspend
during measurement and measurement is continued on resume.
Pm turns off measurement when both ps and als measurements are disabled for
2 seconds. During off-time the power save is 20-500mA, typically 180mA.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:12 +01:00
Mikko Koivunen
12d7494913 iio: light: rpr0521 poweroff for probe fails
Set sensor measurement off after probe fail in pm_runtime_set_active() or
iio_device_register(). Without this change sensor measurement stays on
even though probe fails on these calls.

This is maybe rare case, but causes constant power drain without any
benefits when it happens. Power drain is 20-500uA, typically 180uA.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:11 +01:00
Mikko Koivunen
f87fa26177 iio: light: rpr0521 disable sensor -bugfix
Sensor was marked enabled on each call even if the call was for disabling
sensor.

Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 15:06:10 +01:00
Franziska Naepelt
7cc3bff4ef iio: light: ltr501 Fix interchanged als/ps register field
The register mapping for the IIO driver for the Liteon Light and Proximity
sensor LTR501 interrupt mode is interchanged (ALS/PS).
There is a register called INTERRUPT register (address 0x8F)
Bit 0 represents PS measurement trigger.
Bit 1 represents ALS measurement trigger.
This two bit fields are interchanged within the driver.
see datasheet page 24:
http://optoelectronics.liteon.com/upload/download/DS86-2012-0006/S_110_LTR-501ALS-01_PrelimDS_ver1%5B1%5D.pdf

Signed-off-by: Franziska Naepelt <franziska.naepelt@idt.com>
Fixes: 7ac702b314 ("iio: ltr501: Add interrupt support")
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 14:47:39 +01:00
Matthias Kaehlcke
14b39dce37 iio: light: isl29018: Only declare ACPI table when ACPI is enabled
This fixes the following warning when building with clang:

drivers/iio/light/isl29018.c:808:36: error: variable
    'isl29018_acpi_match' is not needed and will not be emitted
    [-Werror,-Wunneeded-internal-declaration]

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-20 17:07:09 +01:00
Brian Masney
371894f5d1 iio: tsl2583: add runtime power management support
This patch adds runtime power management support to the tsl2583 driver.
The device is powered off after two seconds of inactivity. Verified that
the driver still functions correctly using a TSL2581 hooked up to a
Raspberry Pi 2.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-16 19:39:41 +01:00
Sebastian Reichel
e530cc8408 iio: isl29028: add isl29030 support
isl29030 is basically the same chip. The only difference
is the chip's first pin. For isl29028 its named ADDR0 and
can be used to change the chip's i2c address. For isl29030
on the other hand that pin is named Ials and is an analog
current output proportional to ALS/IR. This change is
irrelevant for the Linux driver.

This has been tested on Motorola Droid 4.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-30 17:26:04 +01:00
Brian Masney
105c3de1eb staging: iio: isl29028: move out of staging
Move ISL29028 ALS / Proximity Sensor out of staging and into mainline.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-26 06:28:25 +01:00
Matt Ranostay
d454ae2edb iio: light: apds9960: add system-wide suspend
APDS9960 can safely force runtime suspend if the system wants
to enter system-wide suspend

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-14 16:43:32 +01:00
simran singhal
98b6d2b676 iio: light: lm3533-als: constify attribute_group structures
Check for attribute_group structures that are only stored in the
event_attrs filed of iio_info structure. As the event_attrs field of
iio_info structures is constant, so these attribute_group structures can
also be declared constant. Done using coccinelle:

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

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

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

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

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

As the attrs field of iio_info structures is also constant, so these
attribute_group structures can also be declared constant. Done manually.

File size before:
   text    data     bss     dec     hex filename
   5798    2376       0    8174    1fee drivers/iio/light/lm3533-als.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   5926	   2248	      0	   8174	   1fee	drivers/iio/light/lm3533-als.o

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-02 09:08:55 +01:00
simran singhal
3ca437c052 iio: light: apds9960: constify attribute_group structures
Check for attribute_group structures that are only stored in the
attrs filed of iio_info structure. As the attrs field of iio_info
structures is constant, so these attribute_group structures can also be
declared constant.
Done using coccinelle:

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

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

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

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

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

File size before:
   text	   data	    bss	    dec	    hex	filename
   8503	    488	      0	   8991	   231f	drivers/iio/light/apds9960.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   8567	    424	      0	   8991	   231f	drivers/iio/light/apds9960.o

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-01 11:36:22 +01:00
simran singhal
c2869498d0 iio: light: bh1750: constify attribute_group structures
Check for attribute_group structures that are only stored in the
attrs filed of iio_info structure. As the attrs field of iio_info
structures is constant, so these attribute_group structures can also be
declared constant.
Done using coccinelle:

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

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

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

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

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

File size before:
   text	   data	    bss	    dec	    hex	filename
   2276	    352	      0	   2628	    a44	drivers/iio/light/bh1750.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   2340	    320	      0	   2660	    a64	drivers/iio/light/bh1750.o

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-01 11:27:22 +01:00
Manivannan Sadhasivam
5e7f47e495 iio:light: Add support for STMicro VL6180 sensor
This patch adds support for STMicro VL6180 - ALS, range and proximity sensor. Sensor is capable of measuring the light
intensity as well as object distance using TOF (Time of Flight) technology.

Signed-off-by: Manivannan Sadhasivam <manivannanece23@gmail.com>
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-25 16:20:46 +00:00
Javier Martinez Canillas
ae4e825b88 iio: light: apds9960: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:55:42 +00:00
Javier Martinez Canillas
9d3922b236 iio: light: tsl2563: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:52:56 +00:00
Javier Martinez Canillas
152abf3770 iio: light: us5182d: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:52:03 +00:00
Song Hongyan
b010500281 hid: hid-sensor-prox: Add more data field for hysteresis parsing
Add HID_USAGE_SENSOR_HUMAN_PRESENCE support for Human Presence sensitivity
parsing, in case some implementation uses it as sensitivity modifier.

Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-02-25 16:43:18 +00:00
Gwendal Grignou
48458b0c19 iio: cros_ec_light_prox: add ChromeOS EC Light and Proximity Sensors
Handle Light and Proximity sensors presented by the ChromeOS EC Sensor hub.
Creates an IIO device for each functions.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-02-04 12:29:52 +00:00
Greg Kroah-Hartman
08cad739ba Second round of IIO new device support, cleanups and features for the 4.11 cycle
New device support:
 * lsm6dsx imu
   - new driver and bindings.
 * max11100 adc
   - new driver and bindings.
 * tlc4541
   - new driver
 * tmp007 thermopile
   - new driver.
 
 Core
 * in kernel interfaces
   - pass through raw values if no scaling provided and a processed value is
     requested.
 * trigger
   - close a race condition in acquiring trigger reference.
   - constify device_type structures.
   - rework the viio_trigger_alloc function to be much neater and easier to
   read.
   - free trigger resources correctly on some error paths. Avoids putting a
   module we don't have.
 
 Documentation
 * ABI
   - specify a unit for proximity measurements.
 
 Cleanups and features
 * ads1015
   - constify iio_info structure.
 * ads7950 cleanups following merge in previous pull
   - Add device tree bindings
   - Drop the ti prefix from the module name in common with other drivers.
   - Change regulator name to vref to match datasheet and other drivers.
 * ak8974
   - remove a redundant zero timeout check.
 * bmi160
   - use variable names for sizeof instead of types.
 * cm3605
   - mark PM functions as __maybe_unused to avoid a build warning.
 * isl29028 (on it's way towards moving out of staging).
   - alignment fixes and newline improvements.
   - combine proxim_get and read_proxim for simpler code.
   - drop unused ISL29028_DEV_ATTR macro
   - move some error logging into functions to cut out repitition.
   - make error messages more consistent.
   - tidy up some brackets.
   - drop the enable flag that nothing uses.
   - only set proximity rate and ALS scale when relevant channel type is enabled.
   - runtime pm support.
 * lsm6dsx
   - fix wrong values for gyro sensitivitiy.
 * mag3110
   - claim direct mode during sysfs reads to avoid a race condition.
 * max1363
   - export OF device table IDs as module aliases.
 * max30100
   - use msleep for long uncritical delays.
 * mcp4531
   - export OF device table as module aliases.
 * ms5611
   - claim direct mode during sysfs reads to avoid a race condition.
 * opt3001
   - export OF device table as module aliases.
 * sx9500
   - claim direct mode during oversampling changes to avoid a race condition.
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Merge tag 'iio-for-4.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into work-next

Jonathan writes:

Second round of IIO new device support, cleanups and features for the 4.11 cycle

New device support:
* lsm6dsx imu
  - new driver and bindings.
* max11100 adc
  - new driver and bindings.
* tlc4541
  - new driver
* tmp007 thermopile
  - new driver.

Core
* in kernel interfaces
  - pass through raw values if no scaling provided and a processed value is
    requested.
* trigger
  - close a race condition in acquiring trigger reference.
  - constify device_type structures.
  - rework the viio_trigger_alloc function to be much neater and easier to
  read.
  - free trigger resources correctly on some error paths. Avoids putting a
  module we don't have.

Documentation
* ABI
  - specify a unit for proximity measurements.

Cleanups and features
* ads1015
  - constify iio_info structure.
* ads7950 cleanups following merge in previous pull
  - Add device tree bindings
  - Drop the ti prefix from the module name in common with other drivers.
  - Change regulator name to vref to match datasheet and other drivers.
* ak8974
  - remove a redundant zero timeout check.
* bmi160
  - use variable names for sizeof instead of types.
* cm3605
  - mark PM functions as __maybe_unused to avoid a build warning.
* isl29028 (on it's way towards moving out of staging).
  - alignment fixes and newline improvements.
  - combine proxim_get and read_proxim for simpler code.
  - drop unused ISL29028_DEV_ATTR macro
  - move some error logging into functions to cut out repitition.
  - make error messages more consistent.
  - tidy up some brackets.
  - drop the enable flag that nothing uses.
  - only set proximity rate and ALS scale when relevant channel type is enabled.
  - runtime pm support.
* lsm6dsx
  - fix wrong values for gyro sensitivitiy.
* mag3110
  - claim direct mode during sysfs reads to avoid a race condition.
* max1363
  - export OF device table IDs as module aliases.
* max30100
  - use msleep for long uncritical delays.
* mcp4531
  - export OF device table as module aliases.
* ms5611
  - claim direct mode during sysfs reads to avoid a race condition.
* opt3001
  - export OF device table as module aliases.
* sx9500
  - claim direct mode during oversampling changes to avoid a race condition.
2017-01-23 09:23:23 +01:00
Javier Martinez Canillas
b1450ae9b6 iio: light: opt3001: Export OF device ID table as module aliases
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the
device was registered via OF, this means that exporting the OF device ID
table device aliases in the module is not needed. But in order to change
how the core reports modaliases to user-space, it's better to export it.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-22 13:21:29 +00:00
Arnd Bergmann
d1242acc56 iio: light: cm3605: mark PM functions as __maybe_unused
When CONFIG_PM_SLEEP is disabled, we get a harmless warning

drivers/iio/light/cm3605.c:292:12: error: 'cm3605_pm_resume' defined but not used [-Werror=unused-function]
drivers/iio/light/cm3605.c:281:12: error: 'cm3605_pm_suspend' defined but not used [-Werror=unused-function]

Marking the functions as possibly unused avoids the warning without
needing to add an #ifdef.

Fixes: 8afa505c12 ("iio: light: add driver for Capella CM3605")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-21 12:34:54 +00:00
Greg Kroah-Hartman
4463c3e72d First round of new device support, features and cleanups for IIO in the 4.11 cycle.
It's shaping to be another fairly busy cycle. Lots more on the way!
 
 New device support
 * ads7950
   - new driver supporting ads7950, ads7951, ads7952, ads7953, ads7954,
   ads7955, ads7956, ads7957, ads7958, ads7959, ads7960, and ads7961 ADCs.
 * cm3605
   - New driver for this light sensor and proximity sensor  which is an
   analog part with some additional digital controls.
 * hx711
   - New driver.
 
 Core new stuff
 * Gravity sensor type.  This is a processed datastream in which the device
 will try to work out which way is down.
 * Split the buffer.h file into two parts. One provides the interface to 'use'
 a buffer, the second provides the internals of the buffer functionality as
 needed by implementations of buffers.
   - Move documentation inline so as to allow use of private: tag when
   generating documentation.
   - Add some utility functions for the few things that are directly done
   with the buffers.
   - Stop exporting functions that no-one uses outside of the core code.
   - Push docs down by the code in the c file where they should have always
   been.
   - Fix typo in kernel-doc for buffer.
   - push down some includes that were previously happening implicitly.
   - stop enabling the timestamp of the dummy device.
 
 Features and cleanups
 * ad5592r
   - ACPI support
 * ad5593r
   -ACPI support.
 * ad5933
   - Fix a false comment about size of a particular register.
 * ad7150
   - replace S_IRUGO | S_IWUSR with 0644.  I'm not that keen on these patches
   in general, but as it was nicely presented I took this one anyway. As a
   general rule will only take these as part of a larger driver cleanup.
   - don't eat an error but rather reutnr it in the write_event_config callback.
 * ad7606
   - replace non standard range attibute with _scale
 * ade7753
   - use usleep_range for short sleeps
 * ade7754
   - use usleep_range for short sleeps
 * ade7758
   - use usleep_range for short sleeps
 * ade7759
   - use usleep_range for short sleeps
 * ade7854
   - use usleep_range for short sleeps
 * adis16201
   - fix description
 * adis16203
   - fix description
   - fix copyright year
 * adis16209
   - fix description
 * adt7316
   - Add braces to arms of if else statement (for consistency)
   - Alignment fixes.
 * axp288
   - Fix up an issue with accidental overwrites of data.
 * bmi160
   - add deivce tables for i2c and spi to support correctly identifying the
   full dt name (including manufacturer).
   - device tree binding.
 * bmp280
   - use usleep_range for short sleeps.
 * cm3232
   - return error from cm3232_reg_init rather than eating it if the last write
   fails.
 * dummy driver
   - remove a semicolor found at end of a function defintition.
 * exynos-adc
   - use usleep_range for short sleeps.
 * hid-sensor (accel)
   - Add timestamp support.  The hardware can provide timestamps so lets support
   them. If not fall back to timestamps estimated in kernel.
 * hid-sensor (light)
   - Add a duplicate ID for the light channels so as to keep existing interface
   whilst also using the more standard IIO interface.
 * hts221
   - acpi probing
 * imx25-gcq
   - Add a macro call to allow this driver to be automatically loaded.
 * isl29028
   - reorganise code to avoid deep nesting of if statements.
   - move chip test and default regs into a function suitable or sharing with
   power management code.
   - tidy up some code alignment.
 * lidar-lite-v3
   - introduce compatible strings that make it clear Garmin have consideral
   friends.
 * mma8452
   - avoid returning signed value when unsigned is appropriate
 * spmi-vadc
   - Update function for generic voltage conversion to take into account that
   different channels on this device should be handled differently.
   - Rework code to allow per channel voltage scaling and support the standard
   options for this hardware.
   - Fixup three minor issues with the above patches for this part. These all
   effect test builds rather than the native builds for the part, but good to
   clean them up anyway.
 * st_sensors
   - support device matching from the ACPI DST tables.
   - acpi based probing for accelerometers
   - acpi based probing for pressure sensors
   - Allow pressure sensors to read negative values.
   - Export sampling frequency for lps25h and lps331ap.
   - Add support for the old DT bindings from the period when these deivces
   were often supported through windows.
 
 Docs fixup:
 * typo in sysfs-bus-iio
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Merge tag 'iio-for-4.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new device support, features and cleanups for IIO in the 4.11 cycle.

It's shaping to be another fairly busy cycle. Lots more on the way!

New device support
* ads7950
  - new driver supporting ads7950, ads7951, ads7952, ads7953, ads7954,
  ads7955, ads7956, ads7957, ads7958, ads7959, ads7960, and ads7961 ADCs.
* cm3605
  - New driver for this light sensor and proximity sensor  which is an
  analog part with some additional digital controls.
* hx711
  - New driver.

Core new stuff
* Gravity sensor type.  This is a processed datastream in which the device
will try to work out which way is down.
* Split the buffer.h file into two parts. One provides the interface to 'use'
a buffer, the second provides the internals of the buffer functionality as
needed by implementations of buffers.
  - Move documentation inline so as to allow use of private: tag when
  generating documentation.
  - Add some utility functions for the few things that are directly done
  with the buffers.
  - Stop exporting functions that no-one uses outside of the core code.
  - Push docs down by the code in the c file where they should have always
  been.
  - Fix typo in kernel-doc for buffer.
  - push down some includes that were previously happening implicitly.
  - stop enabling the timestamp of the dummy device.

Features and cleanups
* ad5592r
  - ACPI support
* ad5593r
  -ACPI support.
* ad5933
  - Fix a false comment about size of a particular register.
* ad7150
  - replace S_IRUGO | S_IWUSR with 0644.  I'm not that keen on these patches
  in general, but as it was nicely presented I took this one anyway. As a
  general rule will only take these as part of a larger driver cleanup.
  - don't eat an error but rather reutnr it in the write_event_config callback.
* ad7606
  - replace non standard range attibute with _scale
* ade7753
  - use usleep_range for short sleeps
* ade7754
  - use usleep_range for short sleeps
* ade7758
  - use usleep_range for short sleeps
* ade7759
  - use usleep_range for short sleeps
* ade7854
  - use usleep_range for short sleeps
* adis16201
  - fix description
* adis16203
  - fix description
  - fix copyright year
* adis16209
  - fix description
* adt7316
  - Add braces to arms of if else statement (for consistency)
  - Alignment fixes.
* axp288
  - Fix up an issue with accidental overwrites of data.
* bmi160
  - add deivce tables for i2c and spi to support correctly identifying the
  full dt name (including manufacturer).
  - device tree binding.
* bmp280
  - use usleep_range for short sleeps.
* cm3232
  - return error from cm3232_reg_init rather than eating it if the last write
  fails.
* dummy driver
  - remove a semicolor found at end of a function defintition.
* exynos-adc
  - use usleep_range for short sleeps.
* hid-sensor (accel)
  - Add timestamp support.  The hardware can provide timestamps so lets support
  them. If not fall back to timestamps estimated in kernel.
* hid-sensor (light)
  - Add a duplicate ID for the light channels so as to keep existing interface
  whilst also using the more standard IIO interface.
* hts221
  - acpi probing
* imx25-gcq
  - Add a macro call to allow this driver to be automatically loaded.
* isl29028
  - reorganise code to avoid deep nesting of if statements.
  - move chip test and default regs into a function suitable or sharing with
  power management code.
  - tidy up some code alignment.
* lidar-lite-v3
  - introduce compatible strings that make it clear Garmin have consideral
  friends.
* mma8452
  - avoid returning signed value when unsigned is appropriate
* spmi-vadc
  - Update function for generic voltage conversion to take into account that
  different channels on this device should be handled differently.
  - Rework code to allow per channel voltage scaling and support the standard
  options for this hardware.
  - Fixup three minor issues with the above patches for this part. These all
  effect test builds rather than the native builds for the part, but good to
  clean them up anyway.
* st_sensors
  - support device matching from the ACPI DST tables.
  - acpi based probing for accelerometers
  - acpi based probing for pressure sensors
  - Allow pressure sensors to read negative values.
  - Export sampling frequency for lps25h and lps331ap.
  - Add support for the old DT bindings from the period when these deivces
  were often supported through windows.

Docs fixup:
* typo in sysfs-bus-iio
2017-01-19 10:40:44 +01:00
Akinobu Mita
b4e8a0eb71 iio: max44000: correct value in illuminance_integration_time_available
According to the datasheet, the shortest available integration time for
ALS ADC conversion is 1.5625ms but illuminance_integration_time_available
sysfs file shows wrong value.

Cc: Crestez Dan Leonard <leonard.crestez@intel.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>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Fixes: d5d8f49b6 ("max44000: Expose ambient sensor scaling")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-12-30 20:20:23 +00:00
Linus Walleij
8afa505c12 iio: light: add driver for Capella CM3605
This adds a driver for the Capella Microsystems CM3605 Ambient
Light Sensor and proximity sensor. This is a pretty simple entirely
analog device that is interfaced with the target system using
the POUT (proximity out) and AOUT (ambient light out) signals.

The POUT signal is a simple high/low signal that indicates whether
an object is in proximity, most typically used to detect a face
in front of a mobile device. The signal requires that an infrared
LED is mounted next to the device, making IR light reflect off
the object in proximity and triggering the POUT signal. We grab
a GPIO pin to handle the POUT signal as an interrupt line and
register this as an event channel for the sensor.

Since the proximity sensor requires an IR LED, we add a LED trigger
named "cm3605" so that the infrared LED can just associate with
this trigger to be sure it is always on when the proximity sensor
needs it.

The AOUT is an analog voltage between 0 and 1550 mV that indicate
the LUX value in the ambient light: this is orthogonal to the
proximity sensor functionality. Since this analog voltage needs
to be converted into a digital value, the driver grabs an IIO
channel named "aout" associated with the device.

This patch created a combined ALS and proximity sensor driver.
The former supports raw reads of the LUX value and the latter
will generate proximity events.

To integrate this properly with Linux we also add a supply
regulator for the VDD pin (driving both functions) and add device
tree bindings to define the RSET resistor that in turn configures
the luminosity range of the ALS sensor.

Since the sensor needs to be on more or less constantly, we
restrict the power management to system suspend/resume: we
disable the IR LED and disable the regulator for VDD on suspend
and take them back up on resume.

Tests:
cd /sys/bus/iio/devices/iio:device1
cat in_illuminance_raw
304
(hold hand over sensor)
cat in_illuminance_raw
17
iio_event_monitor cm3605
Found IIO device with name cm3605 with device number 1
(hold hand over sensor)
Event: time: 2444842301447, type: proximity, channel: 0,
  evtype: thresh, direction: falling
(remove hand over sensor)
Event: time: 2445583440706, type: proximity, channel: 0,
  evtype: thresh, direction: rising

Cc: Capella Microsystems <capellamicro@gmail.com>
Cc: Kevin Tsai <ktsai@capellamicro.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-12-30 17:17:39 +00:00
Kweh, Hock Leong
578f8d7708 iio: light: hid-sensor-als: Add duplicate IIO_LIGHT channel
There is one light sensor type defined in the sensor hub specification,
which has one Illuminance field. It doesn't distinguish between ambient
light sensor or color sensor. Currently it is presented as IIO_INTENSITY
channel. There are some user spaces specifically looking for IIO_LIGHT
channel.
To satisfy such user spaces this change also add a duplicate IIO_LIGHT
channel. The units of measurement of Illuminance field is Lux, so it is
still compatible to IIO ABI.

Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-12-30 17:06:34 +00:00
Pan Bian
db4e5376d0 iio: light: fix improper return value
In function cm3232_reg_init(), it returns 0 even if the last call to
i2c_smbus_write_byte_data() returns a negative value (indicates error).
As a result, the return value may be inconsistent with the execution
status, and the caller of cm3232_reg_init() will not be able to detect
the error. This patch fixes the bug.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188641

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-12-04 10:56:26 +00:00
Dan Carpenter
0e8d2b0f74 iio: tsl2583: make array large enough
This array is supposed to have 10 elements.  Smatch complains that with
the current code we can have n == max_ints and read beyond the end of
the array.

Fixes: ac4f6eee8f ("staging: iio: TAOS tsl258x: Device driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-24 20:09:55 +00:00
Brian Masney
f44d5c8ac3 staging: iio: tsl2583: move out of staging
Move tsl2580, tsl2581, tsl2583 driver out of staging into mainline.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-13 13:07:33 +00:00
Alison Schofield
4aee987380 iio: light: ltr501: claim direct mode during raw writes
Driver was checking for direct mode but not locking it.  Use
claim/release helper functions to guarantee the device stays
in direct mode during all raw write operations.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-10-23 19:34:08 +01:00
Alison Schofield
218e95e976 iio: light: ltr501: claim direct mode during select raw reads
Driver was checking for direct mode but not locking it.  Use
claim/release helper functions to guarantee the device stays
in direct mode during required raw read cases.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-10-23 19:34:07 +01:00
Brian Masney
a57504144c staging: iio: isl29018: move out of staging
Move ISL29018/ISL29023/ISL29035 driver out of staging into mainline.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-10-23 19:33:56 +01:00
Sandhya Bankar
2a20af722d drivers: iio: light: Fix sparse warnings
Fixing below warnings:

drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16

Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-09-27 20:33:01 +01:00
Peter Meerwald-Stadler
ac45e57f15 iio: light: Add driver for Silabs si1132, si1141/2/3 and si1145/6/7 ambient light, uv index and proximity sensors
The si114x supports x=1,2,3 IR LEDs for proximity sensing together with
visible and IR ambient light sensing (ALS).

Newer parts (si1132, si1145/6/7) can measure UV light and compute an UV
index
This was tested on si1143 and si1145

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-09-18 19:56:39 +01:00
Greg Kroah-Hartman
9c2edd8b5b Merge 4.8-rc5 into staging-next
We want the staging fixes in here as well to handle merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-05 08:13:24 +02:00
Linus Torvalds
593ee4edc5 Char/Misc driver fixes for 4.8-rc5
Here are a number of small driver fixes for 4.8-rc5.
 
 The largest thing here is deleting an obsolete driver,
 drivers/misc/bh1780gli.c, as the functionality of it was replaced by an
 iio driver a while ago.  The other fixes are things that have been
 reported, or reverts of broken stuff (the binder change).  All of these
 changes have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a number of small driver fixes for 4.8-rc5.

  The largest thing here is deleting an obsolete driver,
  drivers/misc/bh1780gli.c, as the functionality of it was replaced by
  an iio driver a while ago.

  The other fixes are things that have been reported, or reverts of
  broken stuff (the binder change).  All of these changes have been in
  linux-next for a while with no reported issues"

* tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  thunderbolt: Don't declare Falcon Ridge unsupported
  thunderbolt: Add support for INTEL_FALCON_RIDGE_2C controller.
  thunderbolt: Fix resume quirk for Falcon Ridge 4C.
  lkdtm: Mark lkdtm_rodata_do_nothing() notrace
  mei: me: disable driver on SPT SPS firmware
  Revert "android: binder: fix dangling pointer comparison"
  drivers/iio/light/Kconfig: SENSORS_BH1780 cleanup
  android: binder: fix dangling pointer comparison
  misc: delete bh1780 driver
2016-09-03 11:38:43 -07:00
Valentin Rothberg
83cf8df2d4 drivers/iio/light/Kconfig: SENSORS_BH1780 cleanup
Commit 7ef9153d9a ("misc: delete bh1780 driver") has removed the
Kconfig option SENSORS_BH1780.  Remove the last reference on this
option.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-16 09:45:43 +02:00
Christophe JAILLET
281269f8a0 iio: light: us5182d: Add missing error code assignment before test
It is likely that checking the result of 'pm_runtime_set_active' is
expected here.

Fixes: f0e5f57d3a ("iio: light: us8152d: Add power management support")

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 16:49:43 +01:00
Alison Schofield
193e2d4fd9 iio: add Kconfig selects needed for triggered buffer compiles
Select IIO_BUFFER and IIO_TRIGGERED_BUFFER to compile.
Remove IIO_TRIGGER if present since IIO_BUFFER selects it.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 15:42:04 +01:00
Peter Meerwald-Stadler
ff34ed6d78 iio: light: vcnl4000: Add missing locking
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-10 14:44:06 +01:00
Peter Meerwald-Stadler
5d6931393f iio: light: vcnl4000: Cleanup read_raw() returns
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-10 14:44:05 +01:00
Peter Meerwald-Stadler
ff6a52590c iio: light: vcnl4000: Use BIT() macro
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-10 14:44:05 +01:00
Peter Meerwald-Stadler
d978bfdd0c iio: light: vcnl4000: Mention and check support for VCNL4010 and VCNL4020
VCNL4000, VCNL4010 and VCNL4020 chips are fairly compatible from a software
point of view, added features are not yet supported by the driver

patch adds a check for the product ID and demotes the corresponding
dev_info() to dev_dbg()

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-10 14:44:04 +01:00
Bijosh Thykkoottathil
60b1addba2 drivers:iio:light:isl29125: added macros for sensing range
Added macros for sensing range as the corresponding magic numbers
were used at multiple places.
   - ISL29125_SENSING_RANGE_0 for 375 lux full range
   - ISL29125_SENSING_RANGE_1 for 10k lux full range

Signed-off-by: Bijosh Thykkoottathil <bijosh.t@hotmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-03 10:19:54 +01:00
Gregor Boirie
bc2b7dab62 iio:core: timestamping clock selection support
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow
userspace to select a particular POSIX clock for buffered samples and
events timestamping.

Following clocks, as listed in clock_gettime(2), are supported:
CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW,
CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and
CLOCK_TAI.

Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-30 19:41:38 +01:00
Greg Kroah-Hartman
3c9a6793bd Second round of new iio device support, features and cleanups in the 4.8 cycle
Firstly some contact detail updates:
 * NXP took over freescale. Update the mma8452 header to reflect this.
 * Martin Kepplinger email address change in mma8452 header.
 * Adriana Reus has changed email address. Update .mailmap.
 * Matt Ranostay has changed email address. Update .mailmap.
 
 New Device Support
 * max1363
   - add the missing i2c_device_ids for a couple of parts so they can actually
     be used.
 * ms5867
   - add device ids for ms5805 and ms5837 parts.
 
 New Features
 * ad5755
   - DT support.  This one was a bit controversial and under review for a long
     time.  Still no one could come up with a better solution.
 * stx104
   - add gpio support
 * ti-adc081c
   - Add ACPI device ID matching.
 
 Core changes
 * Refuse to register triggers with duplicate names.  There is no way to
   distinguish between them so this makes no sense.  A few drivers do not
   generate unique names for each instance of the device present.  We can't
   fix this without changing ABI so leave them and wait for someone to
   actually take the rare step of two identical accelerometers on the same
   board.
 * buffer-dma
   - use ARRAY_SIZE in a few appropriate locations.
 
 Tools
 * Fix the fact that the --trigger-num option in generic_buffer didn't allow
   0 which is perfectly valid in the ABI.
 
 Cleanups
 * as3935
   - improve error reporting.
   - remove redundant zeroing of a field in iio_priv.
 * gp2ap020a00f
   - use the iio_device_claim_*_mode helpers rather than open coding locking
   around mode changes.
 * isl29125
   - use the iio_device_claim_*_mode helpers rather than open coding locking.
 * lidar
   - use the iio_device_claim_*_mode helpers rather than open coding locking.
 * mma8452
   - more detail in devices supported description in comments (addresses and
   similar)
 * sca3000
   - add a missing error check.
 * tcs3414
   - use the iio_device_claim_*_mode helpers rather than open coding locking.
 * tcs3472
   - use the iio_device_claim_*_mode helpers rather than open coding locking.
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Merge tag 'iio-for-4.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second round of new iio device support, features and cleanups in the 4.8 cycle

Firstly some contact detail updates:
* NXP took over freescale. Update the mma8452 header to reflect this.
* Martin Kepplinger email address change in mma8452 header.
* Adriana Reus has changed email address. Update .mailmap.
* Matt Ranostay has changed email address. Update .mailmap.

New Device Support
* max1363
  - add the missing i2c_device_ids for a couple of parts so they can actually
    be used.
* ms5867
  - add device ids for ms5805 and ms5837 parts.

New Features
* ad5755
  - DT support.  This one was a bit controversial and under review for a long
    time.  Still no one could come up with a better solution.
* stx104
  - add gpio support
* ti-adc081c
  - Add ACPI device ID matching.

Core changes
* Refuse to register triggers with duplicate names.  There is no way to
  distinguish between them so this makes no sense.  A few drivers do not
  generate unique names for each instance of the device present.  We can't
  fix this without changing ABI so leave them and wait for someone to
  actually take the rare step of two identical accelerometers on the same
  board.
* buffer-dma
  - use ARRAY_SIZE in a few appropriate locations.

Tools
* Fix the fact that the --trigger-num option in generic_buffer didn't allow
  0 which is perfectly valid in the ABI.

Cleanups
* as3935
  - improve error reporting.
  - remove redundant zeroing of a field in iio_priv.
* gp2ap020a00f
  - use the iio_device_claim_*_mode helpers rather than open coding locking
  around mode changes.
* isl29125
  - use the iio_device_claim_*_mode helpers rather than open coding locking.
* lidar
  - use the iio_device_claim_*_mode helpers rather than open coding locking.
* mma8452
  - more detail in devices supported description in comments (addresses and
  similar)
* sca3000
  - add a missing error check.
* tcs3414
  - use the iio_device_claim_*_mode helpers rather than open coding locking.
* tcs3472
  - use the iio_device_claim_*_mode helpers rather than open coding locking.
2016-06-29 15:35:01 -07:00
Greg Kroah-Hartman
af52739b92 Merge 4.7-rc4 into staging-next
We want the fixes in here, and we can resolve a merge issue in
drivers/iio/industrialio-trigger.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-20 08:25:44 -07:00
Alison Schofield
dfc07df0f9 iio: light: gp2ap020a00f: use iio helper function to lock direct mode
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.  Includes a
tiny bit of refactoring (single case -> if) and simplified return
flow.

Also prevents a theoretical race condition by effectively taking the lock
a little earlier than before.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-11 17:18:22 +01:00
Alison Schofield
ae148e5107 iio: light: isl29125: use iio helper function to guarantee direct mode
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.  This allows
removal of an unused lock in the device private global data.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-11 17:16:39 +01:00
Alison Schofield
95bd363bbc iio: light: tcs3472: use iio helper function to guarantee direct mode
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.  This allows
removal of an unused lock in the device private global data.

Also prevents a previous race condition when a buffer is enabled whilst
a raw read is going on.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-11 17:15:36 +01:00
Alison Schofield
b678697910 iio: light: tcs3414: use iio helper function to guarantee direct mode
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.  This allows
removal of an unused lock in the device private global data.

Also prevents a possible race around a buffer being enabled whilst
a read is going on.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-11 17:14:08 +01:00
Greg Kroah-Hartman
aabb406008 First round of IIO new device support, features and cleanups for the 4.8 cycle.
New device support
 * ads1015
   - add ads1115 support
 * bma220 accelerometer
   - new driver
   - triggered buffer support.
 * bmc150
   - add bmm150 support.
 * bmp280
   - bme280 support with addition of humidity channel.
 * max5487 potentiometer
   - new driver
 * MMA7660FC accelerometer.
   - New driver
 * st-pressure
   - support for the lps22hb
 * loop trigger.
   - This one is *nasty* but we have real applications (parrot drones) where
   it is useful.  The trigger basically spins as hard as it can firing off
   a new trigger each time all triggered devices come back to say they are
   done.  It doesn't hang a machine even when doing it on a dummy driver.
   A lot nicer than having this implemented within lots of device drivers
   anyway.
 
 Core stuff
 * Add support to create IIO devices via configfs (similar to we did for
 triggers a while back) + docs.
 * New channel types
   - IIO_ELECTRICAL_CONDUCTIVITY
 * Couple of MAINTAINERS patches to list the device tree bindings.
 * Make trigger ops structure non optional (comment fix). It hasn't been for
 an awful long time, but that's not what the description said.
 
 New features
 * ak8975
   - support adapters that are limited to byte data only by allowing the
   emulated block read i2c function that was recently introduced.
 * atlas-ph
   - support atlas-ec (electrical conductivity sensor)
 * bmi160
   - add available frequency and scale attributes to make the driver
   more user friendly (and avoid having to read the datasheet to know
   what will work).
 * dummy
   - move creation to configfs interface.  It's not real hardware so we
   are not that worried about the ABI breakage ;)
 * mma8452
   - oversampling ration support
 * nau7802
   - expose available gains to make life easier for userspace.
 * st-sensors
   - allow use of emulation for SMBus block reads as all the st parts support
   it.
 * ti-ads1015
   - list datasheet names to allow their use by inkernel consumers.
 * Various module alias additions to help auto probing.  Drop one redundant one
 as well.
 
 Cleanups
 * ad7266, ad7476, ad7887, ad7923, ad799x
   - use direct mode claim function rather than open coding it during sensor
   read (prevents switching on buffers mid read).
 * ad7793, ad7791
   - use direct mode claim to prevent frequency changes when buffers running.
 * afe440x - These are ABI breaking but the driver requires custom userspace
   code to do anything useful anyway and that is still being written and under
   control of TI.  Ultimately we may have other libraries to do pulse
   oximetry with these devices but we aren't aware of any yet.
   - kernel-doc format fixes
   - drop ifdef fun around of_match_ptr - it's not worth the mess to save
   a tiny amount of space.
   - drop some unnecessary register initializations.
   - drop the weird locked gain modes as they gain us nothing (can just set
   all gains separately).
   - remove handling of offset attributes seeing as no channels actually have
   them (oops)
   - Drop the LED3 input channel as it's an alias for ALED2.
   - *big one* remove channel names - an experiment that turned out to not
   make sense - see patch for details.
   - use regmap fields to clean up code.
   - tie the tia gain stages to appropriate channels in the ABI as that is
   what they really effect. Same with the LED currents.
   - cleanout some unused defines and fix a missnamed one.
 * atlas-ph
   - reorganise to allow support of other similar parts.
 * bmc150
   - document supported chips in kconfig help.
 * jsa1212
   - drop an unneeded i2c functionality check for functionality the driver
   doesn't use.
 * mxs-lradc
   - simply touch screen registration code.
   - remove the touch screen unregister as all devm based now.
   - disable only those channels that are masked in hardware stop (others
   are already dealt with elsewhere)
 * st-sensors
   - unexport st_sensors_get_buffer_element as nothing outside the st-sensors
   core driver uses it.
   - fix handling of failure to start up regulators.
 * tpl0102
   - drop an i2c functionality test for features that aren't needed.
 * ti-am335x
   - use variable name rather than type in sizeof for clarity.
   - use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
 
 Tools
 * Add install / uninstall to makefile.  Someone cares, so presumably
 some people will find it useful!
 *  generic_buffer
    - rename to iio_generic_buffer to line up with other tools.
    - handle cleanup when receiving signals
    - Add a --device-num option and a --trigger-num option rather than
    relying on naming which doesn't work if you have two of the same part.
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Merge tag 'iio-for-4.8a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of IIO new device support, features and cleanups for the 4.8 cycle.

New device support
* ads1015
  - add ads1115 support
* bma220 accelerometer
  - new driver
  - triggered buffer support.
* bmc150
  - add bmm150 support.
* bmp280
  - bme280 support with addition of humidity channel.
* max5487 potentiometer
  - new driver
* MMA7660FC accelerometer.
  - New driver
* st-pressure
  - support for the lps22hb
* loop trigger.
  - This one is *nasty* but we have real applications (parrot drones) where
  it is useful.  The trigger basically spins as hard as it can firing off
  a new trigger each time all triggered devices come back to say they are
  done.  It doesn't hang a machine even when doing it on a dummy driver.
  A lot nicer than having this implemented within lots of device drivers
  anyway.

Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
  - IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.

New features
* ak8975
  - support adapters that are limited to byte data only by allowing the
  emulated block read i2c function that was recently introduced.
* atlas-ph
  - support atlas-ec (electrical conductivity sensor)
* bmi160
  - add available frequency and scale attributes to make the driver
  more user friendly (and avoid having to read the datasheet to know
  what will work).
* dummy
  - move creation to configfs interface.  It's not real hardware so we
  are not that worried about the ABI breakage ;)
* mma8452
  - oversampling ration support
* nau7802
  - expose available gains to make life easier for userspace.
* st-sensors
  - allow use of emulation for SMBus block reads as all the st parts support
  it.
* ti-ads1015
  - list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing.  Drop one redundant one
as well.

Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
  - use direct mode claim function rather than open coding it during sensor
  read (prevents switching on buffers mid read).
* ad7793, ad7791
  - use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
  code to do anything useful anyway and that is still being written and under
  control of TI.  Ultimately we may have other libraries to do pulse
  oximetry with these devices but we aren't aware of any yet.
  - kernel-doc format fixes
  - drop ifdef fun around of_match_ptr - it's not worth the mess to save
  a tiny amount of space.
  - drop some unnecessary register initializations.
  - drop the weird locked gain modes as they gain us nothing (can just set
  all gains separately).
  - remove handling of offset attributes seeing as no channels actually have
  them (oops)
  - Drop the LED3 input channel as it's an alias for ALED2.
  - *big one* remove channel names - an experiment that turned out to not
  make sense - see patch for details.
  - use regmap fields to clean up code.
  - tie the tia gain stages to appropriate channels in the ABI as that is
  what they really effect. Same with the LED currents.
  - cleanout some unused defines and fix a missnamed one.
* atlas-ph
  - reorganise to allow support of other similar parts.
* bmc150
  - document supported chips in kconfig help.
* jsa1212
  - drop an unneeded i2c functionality check for functionality the driver
  doesn't use.
* mxs-lradc
  - simply touch screen registration code.
  - remove the touch screen unregister as all devm based now.
  - disable only those channels that are masked in hardware stop (others
  are already dealt with elsewhere)
* st-sensors
  - unexport st_sensors_get_buffer_element as nothing outside the st-sensors
  core driver uses it.
  - fix handling of failure to start up regulators.
* tpl0102
  - drop an i2c functionality test for features that aren't needed.
* ti-am335x
  - use variable name rather than type in sizeof for clarity.
  - use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.

Tools
* Add install / uninstall to makefile.  Someone cares, so presumably
some people will find it useful!
*  generic_buffer
   - rename to iio_generic_buffer to line up with other tools.
   - handle cleanup when receiving signals
   - Add a --device-num option and a --trigger-num option rather than
   relying on naming which doesn't work if you have two of the same part.
2016-06-09 09:15:58 -07:00
Yong Li
590b92a302 iio: light apds9960: Add the missing dev.parent
Without this, the iio:deviceX is missing in the /sys/bus/i2c/devices/0-0039
Some userspace tools use this path to identify a specific instance of the
device.

Signed-off-by: Yong Li <sdliyong@gmail.com>
Reviewed-By: Matt Ranostay <mranostay@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-03 12:54:51 +01:00
Linus Walleij
0dd09ca419 iio: light: bh1780: assign a static name
Using the struct i2c_device->id field for naming the light sensor
is a bad idea: when booting from the pure device tree this is NULL
and that causes the device not to have the "name" property in
sysfs and that in turn confuses the "lsiio" command to stop listing
devices.

So instead of using the device .id, use the hard string "bh1780",
which works just fine.

Fixes: 1f0477f183 ("iio: light: new driver for the ROHM BH1780")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-29 19:51:29 +01:00
Linus Walleij
13c27e946d iio: bh1780: dereference the client properly
The code in runtime_[suspend|resume] was assuming that the
i2c client data was the bh1780 state container, but it contains
the IIO device. So first dereference the IIO device from the
i2c client, then get the state container using the iio_priv()
call.

Fixes: 1f0477f183 ("iio: light: new driver for the ROHM BH1780")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-29 19:50:56 +01:00
Crestez Dan Leonard
14f2461b82 max44000: Remove scale from proximity
This is not implemented and doesn't really make sense because IIO
proximity is unit-less.

Remove IIO_CHAN_INFO_SCALE from info_mask because so that the _scale
sysfs entry won't appear. This fixes userspace tools like generic_buffer
which abort when reads returns an error.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-21 20:21:17 +01:00
Alison Schofield
b7a96bb96f iio: light: jsa1212: remove unneeded i2c check functionality test
This driver does not call i2c_smbus_read|write_byte_data(),
so remove the corresponding functionality test. It uses regmap
to handle byte transfers transparently.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Reviewed-by:Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-21 20:18:05 +01:00
Linus Walleij
53dfc3b9e6 iio: light: bh1780: return after write
When writing a value using direct reg access from debugfs
we need to return and not fall through to reading the
value, lest we'll dereference a NULL pointer.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 10:53:51 +01:00
Greg Kroah-Hartman
5a45e01d41 2nd set of new device support, features and cleanup for IIO in the 4.7 cycle.
Bit of a bumper set for new drivers but plenty of other stuff here as well!
 
 New device support
 * ad5592R ADC/DAC
   - new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
 * Aosong am2315 relative humidity
   - new driver with triggered buffer support in follow up patch.
 * bmi160 imu
   - new driver
 * bmp280
   - bmp180 support - note there is support in the misc/bmp085 driver. Intent
     is to remove that driver long term.
 * invensense mpu6050
   - cleanup leading to explicit support of mpu9150 with a good few cleanups
     along the way.
 * Hope RF hp03 pressure and temperature sensor.
   - new driver
 * maxim DS1803 potentiometer
   - new driver
 * maxim max44000 light and proximity sensor
   - new driver built in a series of steps to support pretty much everything.
 * ROHM BH1780 light sensor
   - new driver. There is an existing driver in misc that this is pretty much
     intended to replace.  The discussion on whether to support the non standard
     interface of that driver is some way is continuing.
 * st-gyro
   - lsm9ds0-gyro.  The accel/magn side of this will take a while longer as
     extensions to the st library are needed for cases where two types of sensor
     share a single i2c address.
 * ti-adc081c
   - support the adc101c and adc121c
 * Vishay VEML6070 UV sensor
   - new driver.
 
 New features
 * core
   - devm_ APIs for channel_get and channel_get_all.  The first user of these
     is the generic ADC based thermal driver.  As it is going through the
     thermal tree these will be picked up as a patch to that next cycle as that
     is how the author preferred to do it.
   - mounting matrix support.  This new core support allows devices to provide
     to userspace (typically from the device tree) allowing compensation for how
     the sensor is mounted on the device.  First examples are on UAVs but it
     has a more mundane use on typical phone where the chip may be on the front
     or the back of the circuit board and soldered at any angle. Includes
     support for this ABI in ak8975 (which has an older interface, now
     deprecated) and mpu6050.
 * tools
   - add a -a option to enable all available channels in generic_buffer sample.
     Makes it somewhat easier to use.
 * adis library and drivers
   - support manual self test flag clearing.  This has technically been broken
     for a very long time - result is an offset on readings as the applied field
     is on all the time.
 * ak8975
   - triggered buffer support
 * bmc150
   - spi support (including splitting the driver into core and i2c parts)
 * bmp280
   - oversampling support.
 * dht11
   - improved logging - useful to debug timing issues on this quirky device.
 * st-sensors
   - read each channel invidivually as not all support the optimization of
   reading in bulk.  This is technically a fix, but will need to be backported
   if desired.
   - support open drain and shared interrupts.
 * ti-adc081c
   - triggered buffer support.
 
 Cleanups
 * inkern
   - white space fix.
 * ad7606
   - use the iio_device_claim_direct_mode call rather than open coding equiv.
 * ad799x
   - white space fix.
 * ad9523
   - unsigned -> unsigned int
 * apds9660
   - brace location tidying up.
   - silence an uninitialized variable warning.
 * ak8975
   - else and brace on same line fix.
 * at91_adc
   - white space fixes.
 * bmc150
   - use regmap stored copy of the device pointer rather than having an
     additional copy.
 * bmg160
   - use regmap stored copy of the device pointer rather than having an
     additional copy.
 * hid-sensors
   - white space fixes.
 * mcp3422
   - white space fix.
 * mma7455
   - use regmap to retrieve the device struct rather than carrying another copy
     in the private data.
 * ms_sensors
   - white space fix.
 * mxs-lradc
   - move current bindings out of staging - some will be shortly deprecated but
     the reality is that we have device trees out there using them so they will
     need to be supported for some time.  They accidentally got left behind
     when the driver graduated from staging.
   - white space cleanup.
   - set INPUT_PROP_DIRECT.
   - move ts config into a better function.
   - move the STMP reset out of the ADC init.
 * vf610_adc
   - case label indenting fix.
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Merge tag 'iio-for-4.7b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing

Jonathan writes:

2nd set of new device support, features and cleanup for IIO in the 4.7 cycle.

Bit of a bumper set for new drivers but plenty of other stuff here as well!

New device support
* ad5592R ADC/DAC
  - new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
* Aosong am2315 relative humidity
  - new driver with triggered buffer support in follow up patch.
* bmi160 imu
  - new driver
* bmp280
  - bmp180 support - note there is support in the misc/bmp085 driver. Intent
    is to remove that driver long term.
* invensense mpu6050
  - cleanup leading to explicit support of mpu9150 with a good few cleanups
    along the way.
* Hope RF hp03 pressure and temperature sensor.
  - new driver
* maxim DS1803 potentiometer
  - new driver
* maxim max44000 light and proximity sensor
  - new driver built in a series of steps to support pretty much everything.
* ROHM BH1780 light sensor
  - new driver. There is an existing driver in misc that this is pretty much
    intended to replace.  The discussion on whether to support the non standard
    interface of that driver is some way is continuing.
* st-gyro
  - lsm9ds0-gyro.  The accel/magn side of this will take a while longer as
    extensions to the st library are needed for cases where two types of sensor
    share a single i2c address.
* ti-adc081c
  - support the adc101c and adc121c
* Vishay VEML6070 UV sensor
  - new driver.

New features
* core
  - devm_ APIs for channel_get and channel_get_all.  The first user of these
    is the generic ADC based thermal driver.  As it is going through the
    thermal tree these will be picked up as a patch to that next cycle as that
    is how the author preferred to do it.
  - mounting matrix support.  This new core support allows devices to provide
    to userspace (typically from the device tree) allowing compensation for how
    the sensor is mounted on the device.  First examples are on UAVs but it
    has a more mundane use on typical phone where the chip may be on the front
    or the back of the circuit board and soldered at any angle. Includes
    support for this ABI in ak8975 (which has an older interface, now
    deprecated) and mpu6050.
* tools
  - add a -a option to enable all available channels in generic_buffer sample.
    Makes it somewhat easier to use.
* adis library and drivers
  - support manual self test flag clearing.  This has technically been broken
    for a very long time - result is an offset on readings as the applied field
    is on all the time.
* ak8975
  - triggered buffer support
* bmc150
  - spi support (including splitting the driver into core and i2c parts)
* bmp280
  - oversampling support.
* dht11
  - improved logging - useful to debug timing issues on this quirky device.
* st-sensors
  - read each channel invidivually as not all support the optimization of
  reading in bulk.  This is technically a fix, but will need to be backported
  if desired.
  - support open drain and shared interrupts.
* ti-adc081c
  - triggered buffer support.

Cleanups
* inkern
  - white space fix.
* ad7606
  - use the iio_device_claim_direct_mode call rather than open coding equiv.
* ad799x
  - white space fix.
* ad9523
  - unsigned -> unsigned int
* apds9660
  - brace location tidying up.
  - silence an uninitialized variable warning.
* ak8975
  - else and brace on same line fix.
* at91_adc
  - white space fixes.
* bmc150
  - use regmap stored copy of the device pointer rather than having an
    additional copy.
* bmg160
  - use regmap stored copy of the device pointer rather than having an
    additional copy.
* hid-sensors
  - white space fixes.
* mcp3422
  - white space fix.
* mma7455
  - use regmap to retrieve the device struct rather than carrying another copy
    in the private data.
* ms_sensors
  - white space fix.
* mxs-lradc
  - move current bindings out of staging - some will be shortly deprecated but
    the reality is that we have device trees out there using them so they will
    need to be supported for some time.  They accidentally got left behind
    when the driver graduated from staging.
  - white space cleanup.
  - set INPUT_PROP_DIRECT.
  - move ts config into a better function.
  - move the STMP reset out of the ADC init.
* vf610_adc
  - case label indenting fix.
2016-04-26 15:07:23 -07:00
Crestez Dan Leonard
06ad7ea10e max44000: Initial triggered buffer support
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:24:08 +01:00
Crestez Dan Leonard
d5d8f49b63 max44000: Expose ambient sensor scaling
This patch exposes ALSTIM as illuminance_integration_time and ALSPGA as
illuminance_scale.

Changing ALSTIM also changes the number of bits available in the data
register. This is handled inside raw value reading because:
* It's very easy to shift a few bits
* It allows SCALE and INT_TIME to be completely independent controls
* Buffer support requires constant scan_type.realbits per-channel

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:23:02 +01:00
Crestez Dan Leonard
237a378b3b max44000: Support controlling LED current output
This is exposed as an output channel with "led" as an extend_name.

Other sensors also have support for controlling an external LED. It's
not clear that simply exposing an undecorated output channel is the
correct approach.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:21:32 +01:00
Crestez Dan Leonard
35b651f391 max44000: Initial support for proximity reading
The proximity sensor relies on sending pulses to an external IR led and
it is disabled by default on powerup. The driver will enable it with a
default power setting.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:12:15 +01:00
Crestez Dan Leonard
b9567e6664 max44000: Initial support
This just adds support for reporting illuminance with default settings.

Important default registers are written on probe because the device
otherwise lacks a reset function.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-24 10:06:55 +01:00
Dan Carpenter
f21122593d iio: light: apds9960: silence uninitialized variable warning
It causes a static checker warning if we use "buf" on the failure path
so move that inside the if statement.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-23 22:18:09 +01:00
Peter Meerwald-Stadler
dfd2ab8dda iio: Add Vishay VEML6070 UV A light sensor driver
ultraviolet (UV) light sensor with I2C interface with a peak
sensitivity at 355 nm

strangely, chip uses two addresses 0x38 and 0x39 for LSB and
MSB data, resp.

datasheet: http://www.vishay.com/docs/84277/veml6070.pdf

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-19 19:58:16 +01:00
Linus Walleij
1f0477f183 iio: light: new driver for the ROHM BH1780
This is a reimplementation of the old misc device driver for the
ROHM BH1780 ambient light sensor (drivers/misc/bh1780gli.c).

Differences from the old driver:
- Uses the IIO framework
- Uses runtime PM to idle the hardware after 5 seconds
- No weird custom power management from userspace
- No homebrewn values in sysfs

This uses the same (undocumented) device tree compatible-string
as the old driver ("rohm,bh1780gli").

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-16 20:51:50 +01:00
Slawomir Stepien
ebe1680693 iio: light apds9960: fix wrong use of brace
This fixes the error reported by checkpatch.pl:

ERROR: that open brace { should be on the previous line

Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-16 13:39:21 +01:00
Greg Kroah-Hartman
5f47992491 Merge 4.6-rc3 into staging-next
This resolves a lot of merge issues with PAGE_CACHE_* changes, and an
iio driver merge issue.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-11 09:30:50 -07:00
Greg Kroah-Hartman
a34d5df85e First round of IIO fixes for the 4.6 cycle.
Again I've ended up with two early fix sets, depending on whether they are
 dependent on elements of the merge window or simply came in after I had
 patches with that dependency already, vs older fixes that were just too
 late for the last cycle.  This first set is for the older ones.
 
 - max1353
   * Add a missing adc to max1363_id - the driver has supported the
     max11644-11647 for a while, but as they weren't in the id table there
     was no way of actually initializing it.
   * Fix a wrong reference voltage for the above models.  Given you couldn't
     initialize the driver for these parts without patching, no one noticed
     that the reference voltage used in computing the scaling was wrong.
  - apds9960
    * The fifo last enelement was read twice (and hence pushed out twice) due
      to a small logic bug.
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Merge tag 'iio-fixes-for-4.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into usb-linus

Jonathan writes:

First round of IIO fixes for the 4.6 cycle.

Again I've ended up with two early fix sets, depending on whether they are
dependent on elements of the merge window or simply came in after I had
patches with that dependency already, vs older fixes that were just too
late for the last cycle.  This first set is for the older ones.

- max1353
  * Add a missing adc to max1363_id - the driver has supported the
    max11644-11647 for a while, but as they weren't in the id table there
    was no way of actually initializing it.
  * Fix a wrong reference voltage for the above models.  Given you couldn't
    initialize the driver for these parts without patching, no one noticed
    that the reference voltage used in computing the scaling was wrong.
 - apds9960
   * The fifo last enelement was read twice (and hence pushed out twice) due
     to a small logic bug.
2016-04-04 12:59:48 -07:00
Irina Tirdea
b1532909de iio: remove unused gpio consumer.h include
GPIO handling code has been removed from the drivers (since
this is now handled by the ACPI core) in commit 0f0796509c ("iio:
remove gpio interrupt probing from drivers that use a single interrupt").

Remove the include for linux/gpio/consumer.h since it is no longer
used.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-03 10:27:47 +01:00
Amitoj Kaur Chawla
9e61d90115 iio: light: tsl2563: Remove flush_scheduled_work
flush_scheduled_work is scheduled for deprecation.
Replace cancel_delayed_work and flush_scheduled_work with
cancel_delayed_work_sync instead to ensure there is no pending or
running work item.

Since there is only one work item, chip->poweroff_work, there are
no further dependencies of flush_scheduled_work().

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-03-20 11:04:49 +00:00
Matt Ranostay
655048a0b9 iio: light: apds9960: correct FIFO check condition
Correct issue that the last entry in FIFO was being read twice due
to an incorrect decrement of entry count variable before condition
check.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-03-20 10:33:33 +00:00
Matt Ranostay
f8d9d3b434 iio: convert to common i2c_check_functionality() return value
Previously most drivers that used a i2c_check_functionality() check
condition required various error codes on failure. This patchset
converts to a standard of -EOPNOTSUPP

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

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07 17:34:04 -08:00
Greg Kroah-Hartman
48436e82fd First set of IIO fixes for the 4.5 cycle.
This set comprises those not dependent on patches in the 4.5 merge cycle.
 A second set will follow shortly with ones that are.
 
 * core in kernel interfaces
   - fix a possible NULL dereference that is a theoretical possibility
     via odd usage of iio_channel_release. Pretty much a hardening of
     the interface, but observed in the wild with the twl4030_charger
     driver.
 * acpi-als
   - report the data as processed as it is in lux.  This fixes a wrong
     use of the IIO ABI.  However, old _raw version retained to avoid
     breaking any userspace in the wild that is relying on that (none
     known but it doesn't hurt us much to retain it)
 * ade7753
   - fix some error handling to avoid use of unitialized data.
 * ltr501
   - use a signed return type for ltr501_match_samp_freq so as to allow
     returning of an error code.
 * mcp4725
   - set name field of struct iio_dev to ensure the sysfs name attribute
     doesn't give NULL.
 * mpl115
   - temperature offset sign is wrong.
 * stk8ba50
   - IIO_TRIGGER dependency added
 * ti_am335x_adc
   - Label buffer as a software buffer. It's actually a hybrid of a
     true hardware buffer feeding a kfifo, but the meaning of these fields
     has changed a little recently and in this case it should be labeled
     a software buffer ensure it is allowed to use the kfifo.
 * vf610_adc
   - HAS_IOMEM dependency
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Merge tag 'iio-fixes-for-4.5a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 4.5 cycle.

This set comprises those not dependent on patches in the 4.5 merge cycle.
A second set will follow shortly with ones that are.

* core in kernel interfaces
  - fix a possible NULL dereference that is a theoretical possibility
    via odd usage of iio_channel_release. Pretty much a hardening of
    the interface, but observed in the wild with the twl4030_charger
    driver.
* acpi-als
  - report the data as processed as it is in lux.  This fixes a wrong
    use of the IIO ABI.  However, old _raw version retained to avoid
    breaking any userspace in the wild that is relying on that (none
    known but it doesn't hurt us much to retain it)
* ade7753
  - fix some error handling to avoid use of unitialized data.
* ltr501
  - use a signed return type for ltr501_match_samp_freq so as to allow
    returning of an error code.
* mcp4725
  - set name field of struct iio_dev to ensure the sysfs name attribute
    doesn't give NULL.
* mpl115
  - temperature offset sign is wrong.
* stk8ba50
  - IIO_TRIGGER dependency added
* ti_am335x_adc
  - Label buffer as a software buffer. It's actually a hybrid of a
    true hardware buffer feeding a kfifo, but the meaning of these fields
    has changed a little recently and in this case it should be labeled
    a software buffer ensure it is allowed to use the kfifo.
* vf610_adc
  - HAS_IOMEM dependency
2016-02-01 13:07:38 -08:00
Alexander Koch
ac663db367 iio: light: opt3001: enable operation w/o IRQ
Enable operation of the TI OPT3001 light sensor without having an
interrupt line available to connect the INT pin to.

In this operation mode, we issue a conversion request and simply wait
for the conversion time available as timeout value, determined from
integration time configuration and the worst-case time given in the data
sheet (sect. 6.5, table on p. 5):

  short integration time (100ms): 110ms + 3ms = 113ms
   long integration time (800ms): 880ms + 3ms = 883ms

This change is transparent as behaviour defaults to using the interrupt
method if an interrupt no. is configured via device tree. Interrupt-less
operation mode is performed when no valid interrupt no. is given.

Signed-off-by: Alexander Koch <mail@alexanderkoch.net>
Signed-off-by: Michael Hornung <mhornung.linux@gmail.com>
Tested-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:26:47 +00:00
Alexander Koch
84e8d090c5 iio: light: opt3001: trivial type refactoring
Change variable type of struct opt3001 members 'ok_to_ignore_lock' and
'result_ready' uint16-bitfield of length one to bool.

They are used as bool, let the compiler do the optimization.

Signed-off-by: Alexander Koch <mail@alexanderkoch.net>
Signed-off-by: Michael Hornung <mhornung.linux@gmail.com>
Tested-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:26:33 +00:00
Alexander Koch
564cff826f iio: light: opt3001: extract int. time constants
Extract integration times as #define constants. This prepares using them
for delay/timeout length determination.

Signed-off-by: Alexander Koch <mail@alexanderkoch.net>
Signed-off-by: Michael Hornung <mhornung.linux@gmail.com>
Tested-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:26:12 +00:00
Gabriele Mazzotta
fa34e6dd44 iio: light: acpi-als: Report data as processed
As per the ACPI specification (Revision 5.0) [1], the data coming
from the sensor represent the ambient light illuminance reading
expressed in lux. So use IIO_CHAN_INFO_PROCESSED to signify that
the data are pre-processed.

However, to keep backward ABI compatibility, the IIO_CHAN_INFO_RAW
bit is not removed.

[1] http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf

This issue has also been responsible for at least one userspace bug
report hence marking what is a small semantic fix really for stable.
[2] https://github.com/hadess/iio-sensor-proxy/issues/46

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-16 12:58:18 +00:00
Greg Kroah-Hartman
02c34ccc1d Third set of new stuff for IIO in the 4.5 cycle.
New driver features
 - us5182
   * Add interrupt support and rising / falling threshold events.
 
 Cleanups / fixes to new stuff / minor additions
 * Expose the IIO value formatting function for drivers to
   make use of internally.
 - ina2xx
    * Fix wrong channel order
    * Fix incorrect reporting of endianness
    * Adding documentation of ABI unique to this device
 - mma8452
   * Drop an unused register description
   * Use an enum for the channel index to aid readability
 - sca3000
   * Use standard NULL comparison style
 - us5182
   * fix an inconsistency in status of enable (a bug with no real effect until
     above patches are applied)
   * refactor the read_raw function to improve maintainability / readability.
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Merge tag 'iio-for-4.5c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Third set of new stuff for IIO in the 4.5 cycle.

New driver features
- us5182
  * Add interrupt support and rising / falling threshold events.

Cleanups / fixes to new stuff / minor additions
* Expose the IIO value formatting function for drivers to
  make use of internally.
- ina2xx
   * Fix wrong channel order
   * Fix incorrect reporting of endianness
   * Adding documentation of ABI unique to this device
- mma8452
  * Drop an unused register description
  * Use an enum for the channel index to aid readability
- sca3000
  * Use standard NULL comparison style
- us5182
  * fix an inconsistency in status of enable (a bug with no real effect until
    above patches are applied)
  * refactor the read_raw function to improve maintainability / readability.
2015-12-26 17:05:25 -08:00
Greg Kroah-Hartman
35ea984dac Second set of IIO new drivers, functionality and cleanups for the 4.5 cycle.
The big one here is the configfs support which has been a long time in the
 works but should allow for cleaner ways to do instantiation of those elements
 of IIO that aren't directly connected to specific hardware. Lots of cool new
 stuff we can use this for in the works!
 
 New core stuff (basically all configfs support related)
 * Configfs support
   - Core support (was waiting for a configfs patch that went in around 4.4rc2)
   - A little fixlet to add a configfs.h to contain a reference to the
     configfs_subsystem structure.
 * Some infrastructure to simplify handling of software based triggers
   (i.e. ones with no actual hardware associated with them)
 * A high resolution timer based trigger.  This has been around for years
     but until the configfs support was ready we didn't have a sensible way
     of instantiating instances of it (the method used for the sysfs_trigger
     has never been really satisfactory)
 
 New Device Support
 * AMS iAQ Volatile Organic Compounds sensor support.
 * Freescale imx7d ADC driver
 * Maxim MAX30100 oximeter driver (note that for these devices most of the
   smart stuff will be in userspace - effectively they are just light sensors
   with some interesting led synchronization as far as the kernel is concerned).
 * Microchip mcp3421 support added to the mcp3422 driver.
 * TI adc124s021 support added to the adc128s052 driver.
 * TI ina219, inda226 power monitors. Note that there is an existing hwmon driver
   for these parts, the usecase is somewhat different so it is unclear at this
   point if the hwmon driver will eventually be replaced by a bridge from
   this driver.  In the meantime the Kconfig dependencies should prevent both
   from being built.
 
 New driver functionality
 * us8152d power management support.
 
 Cleanups, fixups
 * Use list_for_each_entry_safe instead of list_for_each_safe with the entry
   bit coded longhand.
 * Select IRQ_WORK for IIO_DUMMY_EVGEN.  This is a fix that somehow got lost
   when the driver was moved so lets do it again.
 * st-accel - drop an unused define.
 * vz89x, lidar - optimize i2c transactions by using a single i2c tranfers
   instead of multiple calls where supported (fall back to smbus calls as
   before if not).
 * Use dev_get_platdata() in staging drivers: tsl2x7x, adcs and frequency
   drivers instead of direct access to the structure element.
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Merge tag 'iio-for-4.5b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO new drivers, functionality and cleanups for the 4.5 cycle.

The big one here is the configfs support which has been a long time in the
works but should allow for cleaner ways to do instantiation of those elements
of IIO that aren't directly connected to specific hardware. Lots of cool new
stuff we can use this for in the works!

New core stuff (basically all configfs support related)
* Configfs support
  - Core support (was waiting for a configfs patch that went in around 4.4rc2)
  - A little fixlet to add a configfs.h to contain a reference to the
    configfs_subsystem structure.
* Some infrastructure to simplify handling of software based triggers
  (i.e. ones with no actual hardware associated with them)
* A high resolution timer based trigger.  This has been around for years
    but until the configfs support was ready we didn't have a sensible way
    of instantiating instances of it (the method used for the sysfs_trigger
    has never been really satisfactory)

New Device Support
* AMS iAQ Volatile Organic Compounds sensor support.
* Freescale imx7d ADC driver
* Maxim MAX30100 oximeter driver (note that for these devices most of the
  smart stuff will be in userspace - effectively they are just light sensors
  with some interesting led synchronization as far as the kernel is concerned).
* Microchip mcp3421 support added to the mcp3422 driver.
* TI adc124s021 support added to the adc128s052 driver.
* TI ina219, inda226 power monitors. Note that there is an existing hwmon driver
  for these parts, the usecase is somewhat different so it is unclear at this
  point if the hwmon driver will eventually be replaced by a bridge from
  this driver.  In the meantime the Kconfig dependencies should prevent both
  from being built.

New driver functionality
* us8152d power management support.

Cleanups, fixups
* Use list_for_each_entry_safe instead of list_for_each_safe with the entry
  bit coded longhand.
* Select IRQ_WORK for IIO_DUMMY_EVGEN.  This is a fix that somehow got lost
  when the driver was moved so lets do it again.
* st-accel - drop an unused define.
* vz89x, lidar - optimize i2c transactions by using a single i2c tranfers
  instead of multiple calls where supported (fall back to smbus calls as
  before if not).
* Use dev_get_platdata() in staging drivers: tsl2x7x, adcs and frequency
  drivers instead of direct access to the structure element.
2015-12-26 17:03:33 -08:00
Adriana Reus
9b1de75b5d iio: light: us5182d: Refactor read_raw function
A bit of refactoring for better readability.
Moved and slightly reorganized all the activity necessary for reading als
and proximity into a different function. This way the switch in read raw
becomes clearer and more compact.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-22 18:07:08 +00:00
Adriana Reus
b6695254f8 iio: light: us5182d: Add interrupt support and events
Add interrupt support for proximity.
Add two threshold events to signal rising and falling directions.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-22 18:07:05 +00:00
Adriana Reus
58e9042f5f iio: light: us5182d: Fix enable status inconcistency
When setting als only or proximity only modes make sure that we mark the
other component as disabled. This fix is in preparation of adding event
support because that will make it possible to switch between one-shot and
continuous modes and not tracking these correctly may cause faulty
behaviour (e.g wrongfully considering px enabled and not setting an
appropriate mode in the chip).

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-22 18:00:51 +00:00
Markus Elfring
c08ae18560 iio-light: Use a signed return type for ltr501_match_samp_freq()
The return type "unsigned int" was used by the ltr501_match_samp_freq()
function despite of the aspect that it will eventually return a negative
error code.
Improve this implementation detail by deletion of the type modifier then.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19 17:00:29 +00:00
Greg Kroah-Hartman
93c222c0e1 Merge 4.4-rc5 into staging-next
We want those fixes in here for testing.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-13 19:23:01 -08:00
Adriana Reus
f0e5f57d3a iio: light: us8152d: Add power management support
Add power management for sleep as well as runtime pm.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02 18:42:05 +00:00
Adriana Reus
a22a3c5c40 iio: light: us5182d: Add functions for selectively enabling als and proximity
Keep track of the als and px enabled/disabled status in
order to enable them selectively.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02 18:42:04 +00:00
Adriana Reus
c3304c2123 iio: light: us5182d: Add property for choosing default power mode
This chip supports two power modes.
1. "one-shot" mode - the chip activates and executes one complete
conversion loop and then shuts itself down. This is the default mode
chosen for raw reads.
2. "continuous" mode - the chip takes continuous measurements.

Continuous mode is more expensive power-wise but may be more reliable.
Add a property so that if preferred, the default power mode for raw
reads can be set to continuous.
Separate one-shot enabling in a separate function that will be used
depending on the chosen power mode. Also create a function for
powering the chip on and off.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02 18:42:03 +00:00
Matt Ranostay
8386c27587 iio: light: apds9960: correct ->last_busy count
Add missing pm_runtime_mark_last_busy to apds9960_set_power_state
function.

Unless pm_runtime_mark_last_busy is called the
pm_runtime_put_autosuspend may put the device into suspend before the
delay time requested.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-11-21 15:57:04 +00:00
Adriana Reus
7d0ead5c3f iio: Reconcile operation order between iio_register/unregister and pm functions
At probe, runtime pm should be setup before registering the sysfs interface so
that all the power attributes are accurate and functional when registering.
Also, when removing the device we should unregister first to make sure
that the interfaces that may result in wakeups are no longer available.

Fix this behaviour for the following drivers: bmc150, bmg160, kmx61,
kxcj-1013, mma9551, mma9553, rpr0521.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-11-08 15:36:53 +00:00
Adriana Reus
536bbca7cf iio: light: pa12203001: Poweroff chip if register fails
Make sure we poweroff the chip if for any reason iio_register
returns an error.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-11-08 15:34:40 +00:00
Bjorn Andersson
18fb1ab0eb iio: light: lm3533-als: Print error message on invalid resistance
Print an error message to indicate that invalid configuration data was
provided in the platform_data, rather than just aborting initialization.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-31 10:05:32 +00:00
Jonathan Cameron
801ab33596 iio:light:apds9960 Fix sparse endian warnings.
This patch is a tidy up of warnings from the autobuilder.

>> drivers/iio/light/apds9960.c:495:32: sparse: cast to restricted __le16
   drivers/iio/light/apds9960.c:635:24: sparse: cast to restricted __le16
>> drivers/iio/light/apds9960.c:672:21: sparse: incorrect type in assignment (different base types)
   drivers/iio/light/apds9960.c:672:21:    expected unsigned short [unsigned] [usertype] buf
   drivers/iio/light/apds9960.c:672:21:    got restricted __le16 [usertype] <noident>

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: mranostay@gmail.com
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-12 18:21:38 +01:00
Octavian Purdila
0f0796509c iio: remove gpio interrupt probing from drivers that use a single interrupt
Commit 845c877009 ("i2c / ACPI: Assign IRQ for devices that have
GpioInt automatically") automatically assigns the first ACPI GPIO
interrupt in client->irq, so we can remove the probing code from
drivers that use only one interrupt.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-03 12:05:51 +01:00
Octavian Purdila
6839c1b070 iio: fix drivers that use 0 as a valid IRQ in client->irq (part 2)
Since commit dab472eb93 ("i2c / ACPI: Use 0 to indicate that
device does not have interrupt assigned") 0 is not a valid i2c
client irq anymore, so change all driver's checks accordingly.

The same issue occurs when the device is instantiated via device tree
with no IRQ, or from the i2c sysfs interface, even before the patch
above.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-03 11:02:37 +01:00
Greg Kroah-Hartman
9f827d8099 First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle
New device support
 * APDS9960 ALS + proximity driver
 * bmg160 SPI devices.
 * HDC100x humidity sensors
 * Holt HI-8435 threshold detector
 * mma8453Q accelerometer added to the mma8452 driver
 * mma86452FC and mma8653FC accelerometers added to the mma8452 driver
 * mxc4005 accelerometer
 * PulsedLight LIDAR
 * SensorTech VZ89x volatile organic compound sensor
 * UPISEMI uS5182d ALS and proximity sensors
 
 New core functionality
 * triggered events - use triggers to check for changes in threshold type
   detectors on devices with out interrupt support.  First user is the holt
   comparator.
 * chemical concentration and resistance channel types.
 
 New driver functionality
 * vf610
   - buffer support.
   - followup coccinelle warning fix.
 
 Core rework
 * buffers
   - break out callback buffer to own module.
   - move buffer implementations to a new subdirectory
 * percolate the error code form iio_event_getfd out to userspace
   rather than giving a missleading error later on.
 
 Cleanups
 * adddac drivers
   - use BIT macro where appropriate.
 * meter drivers
   - use BIT macro where appropriate.
 
 * ad7303
  - add an OF match table to line up with the binding docs.
 * adc128s052
   - add an OF match table to line up with the binding docs.
 * adf4350
   - add an OF match table to line up with the binding docs
 * as3935
   - add an OF match table to line up with the binding docs.
 * berlin2-adc
   - use GENMASK and BIT for masks
   - prevent attempting to sample multiple channels at once by moving a
     mutex scop
   - coding style cleanups
 * bmg150_magn
   - kconfig sort order was wrong - fix it.
 * bmg160
   - use i2c regmap and drop all uses of i2c_client
   - separate i2c and core driver
 * cc10001_adc
   - kconfig sort order was wrong - fix it.
 * evgen (dummy driver helper module)
   - move interrupt generation to irq_work to reduce differences between
     the dummy driver and real hardware drivers.
 * hmc5843
   - set the name dynamically rather than to a fixed value for one of the
     suported parts.
   - export module alias information to allow autoprobing of module.
 * lpc32xx
   - on failure to get resource or irq return -ENXIO as uppose to -EBUSY
 * max1027
   - set .of_match_table to actually allow OF style matching.
 * max5821
   - add MODULE_DEVICE_TABLE for OF table.
 * mma8452
   - refactor to separate out chip specific data.
   - add freefall / motion interrupt source for devices that do their
     interrupts slightly differently.
   - update copywrite notice.
   - leave naming of events directory in sysfs to the core
 * mcp320x
   - set .of_match_table so that it can be use for OF style matching.
 * mlx90614
   - Implement filter configuration (note the datasheet changed as a result
     of the driver reviews to include the values we needed ;)
 * opt3001
   - drop .owner field as assigned by platform driver core.
 * si7020
   - replace a bitmask on the humidity values with a more correct range
     check.
 * stk310
   - improved error handling.
   - use BIT macro where appropriate and use the resulting defines
     instead of magic numbers in the code.
   - fix indentation
 * st-sensors
   - add debugfs register read hook
 * tsl4531
   - fix error handling in check_id
 * twl6030
   - fix module autoload for OF
 * iio-trig-sysfs
   - document add and remove attribute
 * trigger in staging
   - code alignment fixes.
   - braces on both branches of if statement if needed for one.
 * xilinx-xadc
   - push interrupts into hardirq context as there isn't much in them
     any more and it avoids breaking PREEMPT_RT builds due to the use
     of a spinlock between the hardirq and the thread.
 
 Tools
 * event-monitor
   - report unsupported events.  We keep expanding what can come from drivers
     so give a helpful error if one turns up in an out of date userspace
     program.
 * generic-buffer
   - helpful message about needing to enable a channel to start the buffer.
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Merge tag 'iio-for-4.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle

New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors

New core functionality
* triggered events - use triggers to check for changes in threshold type
  detectors on devices with out interrupt support.  First user is the holt
  comparator.
* chemical concentration and resistance channel types.

New driver functionality
* vf610
  - buffer support.
  - followup coccinelle warning fix.

Core rework
* buffers
  - break out callback buffer to own module.
  - move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
  rather than giving a missleading error later on.

Cleanups
* adddac drivers
  - use BIT macro where appropriate.
* meter drivers
  - use BIT macro where appropriate.

* ad7303
 - add an OF match table to line up with the binding docs.
* adc128s052
  - add an OF match table to line up with the binding docs.
* adf4350
  - add an OF match table to line up with the binding docs
* as3935
  - add an OF match table to line up with the binding docs.
* berlin2-adc
  - use GENMASK and BIT for masks
  - prevent attempting to sample multiple channels at once by moving a
    mutex scop
  - coding style cleanups
* bmg150_magn
  - kconfig sort order was wrong - fix it.
* bmg160
  - use i2c regmap and drop all uses of i2c_client
  - separate i2c and core driver
* cc10001_adc
  - kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
  - move interrupt generation to irq_work to reduce differences between
    the dummy driver and real hardware drivers.
* hmc5843
  - set the name dynamically rather than to a fixed value for one of the
    suported parts.
  - export module alias information to allow autoprobing of module.
* lpc32xx
  - on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
  - set .of_match_table to actually allow OF style matching.
* max5821
  - add MODULE_DEVICE_TABLE for OF table.
* mma8452
  - refactor to separate out chip specific data.
  - add freefall / motion interrupt source for devices that do their
    interrupts slightly differently.
  - update copywrite notice.
  - leave naming of events directory in sysfs to the core
* mcp320x
  - set .of_match_table so that it can be use for OF style matching.
* mlx90614
  - Implement filter configuration (note the datasheet changed as a result
    of the driver reviews to include the values we needed ;)
* opt3001
  - drop .owner field as assigned by platform driver core.
* si7020
  - replace a bitmask on the humidity values with a more correct range
    check.
* stk310
  - improved error handling.
  - use BIT macro where appropriate and use the resulting defines
    instead of magic numbers in the code.
  - fix indentation
* st-sensors
  - add debugfs register read hook
* tsl4531
  - fix error handling in check_id
* twl6030
  - fix module autoload for OF
* iio-trig-sysfs
  - document add and remove attribute
* trigger in staging
  - code alignment fixes.
  - braces on both branches of if statement if needed for one.
* xilinx-xadc
  - push interrupts into hardirq context as there isn't much in them
    any more and it avoids breaking PREEMPT_RT builds due to the use
    of a spinlock between the hardirq and the thread.

Tools
* event-monitor
  - report unsupported events.  We keep expanding what can come from drivers
    so give a helpful error if one turns up in an out of date userspace
    program.
* generic-buffer
  - helpful message about needing to enable a channel to start the buffer.
2015-09-30 03:37:48 +02:00
kbuild test robot
1d2f1e084b iio: light: apds9960: fix platform_no_drv_owner.cocci warnings
drivers/iio/light/apds9960.c:1125:3-8: No need to set .owner here. The core will do it.

 Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

CC: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-23 20:23:30 +01:00
kbuild test robot
ebe5c543cf iio: apds9960: light: fix simple_return.cocci warnings
drivers/iio/light/apds9960.c:986:1-4: WARNING: end returns can be simpified

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.

Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-23 20:23:30 +01:00
Adriana Reus
c14f8abe53 iio: light: Add support for UPISEMI uS5182d als and proximity sensor
Add support for UPISEMI us5182d als and proximity sensor.
Supports raw readings.
Data sheet for this device can be found here:
http://www.upi-semi.com/temp/uS5182D-DS-P0103-temp.pdf

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-23 20:23:27 +01:00
Linus Torvalds
8d2faea672 This is the bulk of GPIO changes for the v4.3 kernel cycle:
Core changes:
 
 - Root out the wrapper devm_gpiod_get() and gpiod_get() etc
   versions of the descriptor calls that did not use the flags
   argument on the end. This was around for too long and eventually
   Uwe Kleine-König took the time to clean it out and the last
   users are removed along with the macros in this tag. In several
   cases the use of flags simplifies the code. For this reason we
   have (ACKed) patches hitting in DRM, IIO, media, NFC, USB+PHY
   up until we hammer in the nail with removing the macros.
 
 - Add a fat document describing how much ready-made GPIO stuff
   we have i the kernel to discourage people from reinventing
   a square wheel in userspace, as so often happens.
 
 - Create a separate lockdep class for each instance of a GPIO
   IRQ chip instead of using one class for all chips, as the current
   code will not work with systems with several GPIO chips doing
   lockdep debugging.
 
 - Protect against driver unloading also when a GPIO line is only
   used as IRQ for the GPIOLIB_IRQCHIP helpers.
 
 - If the GPIO chip has no designated owner, assign the parent
   device driver owner as owner.
 
 - Consolidation of chained IRQ handler install/remove replacing
   all call sites where irq_set_handler_data() and
   irq_set_chained_handler() were done in succession with a
   combined call to irq_set_chained_handler_and_data(). This
   series was created by Thomas Gleixner after the problem was
   observed by Russell King.
 
 - Tglx also made another series of patches switching
   __irq_set_handler_locked() for irq_set_handler_locked() which
   is way cleaner.
 
 - Tglx and Jiang Liu wrote a good bunch of patches to make use of
   irq_desc_get_xxx() accessors and avoid looking up irq_descs
   from IRQ numbers. The goal is to get rid of the irq number
   from the handlers in the IRQ flow which is nice.
 
 - Rob Herring killed off the set_irq_flags() for all GPIO
   drivers. This was an ARM specific function that is replaced
   with the generic irq_modify_status() where special flags
   are actually needed.
 
 - When an OF node has a pin range for its GPIOs, return
   -EPROBE_DEFER if the pin controller isn't available.
   Pretty logical, yet needed to be fixed.
 
 - If a driver using GPIOLIB_IRQCHIP has its own
   irq_*_resources call back, then call these instead of the
   defaults provided by the GPIOLIB.
 
 - Fix an undocumented ABI hole: named GPIOs were not
   properly documented.
 
 Driver improvements:
 
 - Add get_direction() support to the generic GPIO driver, it's
   strange that we didn't have that before.
 
 - Make it possible to have input-only GPIO chips using the
   generic GPIO driver.
 
 - Clean out platform data support from the Emma Mobile (EM)
   driver
 
 - Finegrained runtime PM support for the RCAR driver.
 
 - Support r8a7795 (R-car H3) in the RCAR driver.
 
 - Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.
 
 - Some consolidation and new support in the MPC8xxx driver,
   we now support MPC5125.
 
 - Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
   spinlocks making it work better with the realime patches.
 
 - Interrupt support for the EXTRAXFS GPIO driver.
 
 - Make the ETRAXFS GPIO driver support also ARTPEC-3.
 
 - Interrupt and wakeup support for the BRCMSTB driver, also for
   wakeup from S5 cold boot.
 
 - Mask MXC IRQs during suspend.
 
 - Improve OMAP2 GPIO set_debounce() to work according to spec.
 
 - The VF610 driver handles IRQs properly.
 
 New drivers:
 
 - ZTE ZX GPIO driver.
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Merge tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.3 kernel cycle.

  There is quite a lot going on in the GPIO subsystem this merge window,
  so the main matter is decribed below.

  The hits in other subsystems when making the GPIO flags optional are
  all ACKed by their respective subsystem maintainers.

  Core changes:

   - Root out the wrapper devm_gpiod_get() and gpiod_get() etc versions
     of the descriptor calls that did not use the flags argument on the
     end.  This was around for too long and eventually Uwe Kleine-König
     took the time to clean it out and the last users are removed along
     with the macros in this tag.  In several cases the use of flags
     simplifies the code.  For this reason we have (ACKed) patches
     hitting in DRM, IIO, media, NFC, USB+PHY up until we hammer in the
     nail with removing the macros.

   - Add a fat document describing how much ready-made GPIO stuff we
     have i the kernel to discourage people from reinventing a square
     wheel in userspace, as so often happens.

   - Create a separate lockdep class for each instance of a GPIO IRQ
     chip instead of using one class for all chips, as the current code
     will not work with systems with several GPIO chips doing lockdep
     debugging.

   - Protect against driver unloading also when a GPIO line is only used
     as IRQ for the GPIOLIB_IRQCHIP helpers.

   - If the GPIO chip has no designated owner, assign the parent device
     driver owner as owner.

   - Consolidation of chained IRQ handler install/remove replacing all
     call sites where irq_set_handler_data() and
     irq_set_chained_handler() were done in succession with a combined
     call to irq_set_chained_handler_and_data().

     This series was created by Thomas Gleixner after the problem was
     observed by Russell King.

   - Tglx also made another series of patches switching
     __irq_set_handler_locked() for irq_set_handler_locked() which is
     way cleaner.

   - Tglx and Jiang Liu wrote a good bunch of patches to make use of
     irq_desc_get_xxx() accessors and avoid looking up irq_descs from
     IRQ numbers.  The goal is to get rid of the irq number from the
     handlers in the IRQ flow which is nice.

   - Rob Herring killed off the set_irq_flags() for all GPIO drivers.
     This was an ARM specific function that is replaced with the generic
     irq_modify_status() where special flags are actually needed.

   - When an OF node has a pin range for its GPIOs, return -EPROBE_DEFER
     if the pin controller isn't available.  Pretty logical, yet needed
     to be fixed.

   - If a driver using GPIOLIB_IRQCHIP has its own irq_*_resources call
     back, then call these instead of the defaults provided by the
     GPIOLIB.

   - Fix an undocumented ABI hole: named GPIOs were not properly
     documented.

  Driver improvements:

   - Add get_direction() support to the generic GPIO driver, it's
     strange that we didn't have that before.

   - Make it possible to have input-only GPIO chips using the generic
     GPIO driver.

   - Clean out platform data support from the Emma Mobile (EM) driver

   - Finegrained runtime PM support for the RCAR driver.

   - Support r8a7795 (R-car H3) in the RCAR driver.

   - Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.

   - Some consolidation and new support in the MPC8xxx driver, we now
     support MPC5125.

   - Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
     spinlocks making it work better with the realime patches.

   - Interrupt support for the EXTRAXFS GPIO driver.

   - Make the ETRAXFS GPIO driver support also ARTPEC-3.

   - Interrupt and wakeup support for the BRCMSTB driver, also for
     wakeup from S5 cold boot.

   - Mask MXC IRQs during suspend.

   - Improve OMAP2 GPIO set_debounce() to work according to spec.

   - The VF610 driver handles IRQs properly.

  New drivers:

   - ZTE ZX GPIO driver"

* tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (87 commits)
  Revert "gpio: extraxfs: fix returnvar.cocci warnings"
  gpio: tc3589x: use static container helper
  gpio: xlp: fix error return code
  gpio: vf610: handle level IRQ's properly
  gpio: max732x: Fix error handling in probe()
  gpio: omap: fix clk_prepare/unprepare usage
  gpio: omap: protect regs access in omap_gpio_irq_handler
  gpio: omap: fix omap2_set_gpio_debounce
  gpio: omap: switch to use platform_get_irq
  gpio: omap: remove wrong irq_domain_remove usage in probe
  gpiolib: add description for gpio irqchip fields in struct gpio_chip
  gpio: extraxfs: fix returnvar.cocci warnings
  gpiolib: irqchip: use different lockdep class for each gpio irqchip
  gpio/grgpio: fix deadlock in grgpio_irq_unmap()
  Documentation: gpio: consumer: describe active low property
  gpio: mxc: fix section mismatch warning
  gpio/mxc: mask gpio interrupts in suspend
  gpio: omap: Fix missing raw locks conversion
  gpio: brcmstb: support wakeup from S5 cold boot
  gpio: brcmstb: Add interrupt and wakeup source support
  ...
2015-09-04 10:07:45 -07:00
Dan Carpenter
7d87b3c5c8 iio: tsl4531: fix error handling in tsl4531_check_id()
The tsl4531_check_id() function returned 1 on "found" and 0 on "not
found" and negative error codes on failure.  This was non-standard and
bug prone.  The caller treated all non-zero values including error codes
as "found".

This patch fixes it by changing the tsl4531_check_id() to return zero on
success or a negative error code, and updates the caller.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-31 16:29:52 +01:00
Matt Ranostay
aff268cd53 iio: light: add APDS9960 ALS + promixity driver
APDS9960 is a combination of ALS, proximity, and gesture sensors.

This patch adds support for these functions along with gain control,
integration time, and event thresholds.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-31 16:23:09 +01:00
kbuild test robot
a8dbc64a26 iio: light: fix platform_no_drv_owner.cocci warnings
drivers/iio/light/opt3001.c:796:3-8: No need to set .owner here. The core will do it.

 Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

CC: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-31 16:11:08 +01:00
Linus Walleij
5f6f02cd49 Linux 4.2-rc4
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Merge tag 'v4.2-rc4' into devel

Linux 4.2-rc4
2015-08-13 14:42:55 +02:00
Hartmut Knaack
5b958f110f iio:light:stk3310: adjust indentation
Adjust some indentation issues as spotted by checkpatch.pl --strict

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-12 22:17:23 +01:00
Hartmut Knaack
952c3aa3fb iio:light:stk3310: use correct names and type for state
Indicate the bit number of predefined states, make use of these names and
change the state type in _resume to u8 to avoid type casting.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-12 22:16:27 +01:00
Hartmut Knaack
7c7a9eeaa3 iio:light:stk3310: add more error handling
Check for the following error cases:
  * lower boundary for val in _write_event
  * return value of regmap_(field_)read
  * possible values for chan->type
  * return value of stk3310_gpio_probe

Also add an error path in _probe to put the sensor back into stand-by mode
in case of serious errors.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-12 22:16:02 +01:00
Greg Kroah-Hartman
1c46ae0af6 Second set of new device support, features and cleanup for the 4.3 cycle.
Take 2 also includes a fix set that was too late for the 4.2 cycle.
 
 As we had a lot of tools and docs work in this set, I have broken those
 out into their own categories in this description.
 
 Fixes from the pull request '4th set of IIO fixes for the 4.2 cycle'.
 * Poll functions for both event chardev and the buffer one were returning
   negative error codes (via a positive value).
 * A recent change to lsiio adding some error handling that was wrong and
   stopped the tool working.
 * bmg160 was missing some dependencies in Kconfig
 * berlin2-adc had a misshandled register (wrote a value rather than a bitmap)
 
 New device support
 * TI opt3001 light sensor
 * TXC PA12 ALS and proximity sensor.
 * mcp3301 ADC support (in mcp320x driver)
 * ST lsm303agr accelerometer and magnetometer drivers (plus some st-sensors
   common support to allow different WHOAMI register addresses, devices with
   fixed scale and allow interrupt equiped magnetometers).
 * ADIS16305, ADIS16367, ADIS16445IMUs (in the adis16400 driver)
 * ADIS16266 gyro (in the adis16260 driver)
 * ADIS16137 gyro (in the adis16136 driver)
 
 New functionality
 * mmc35240 DT bindings.
 * Inverse unit conversion macros to aid handing of values written to sysfs
   attributes.
 
 Core cleanup
 * Forward declaration of struct iio_trigger to avoid a compile warning.
 
 Driver cleanup / fixes
 * mxs-lradc
   - Clarify which parts are supported.
   - Fix spelling erorrs.
   - Missing/extra includes
   - reorder includes
   - add datasheet name listings for all usable channels (to allow them
     to be bound by name from consumer drivers)
 * acpi-als - add some function prefixes as per general iio style.
 * bmc150_magn - replace a magic value with the existing define.
 * vf610 - determine possible sample frequencies taking into account the
   electrical characteristics (defining a minimum sample time)
 * dht11
   - whitespace
   - additional docs
   - avoid mulitple assignments in one line
   - Use the new funciton ktime_get_resolution_ns to cleanup a nasty trick
     previously used for timing.
 * Fix all drivers that consider 0 a valid IRQ for historical reasons.
 * Export I2C module alias info where previously missing (to allow autoprobing)
 * Export OF module alias info where previously missing.
 * mmc35240 - switch some variables into arrays to improve readability.
 * mlx90614 - define some magic numbers for readability.
 * bmc150_magn
   - expand area locked by a mutex to cover all the use of the
     data->buffer.
   - use descriptive naming for a mask instead of a magic value.
 * berin2-adc
   - pass up an error code rather that a generic error
   - constify the iio_chan_spec
   - some other little tidy ups.
 * stk8312
   - fix a dependency on triggered buffers in kconfig
   - add a check for invalid attribute values
   - improve error handling by returning error codes where possible and
     return immediately where relevant
   - rework macro defs to use GENMASK etc
   - change some variable types to reduce unnecessary casting
   - clean up code style
   - drop a local buffer copy for bulk reads and use the one in data->buffer
      instead.
 * adis16400 - the adis16448 gyroscope scale was wrong.
 * adis16480 - some more wrong scales for various parts.
 * adis16300 - has an undocumented product id and serial number registers so
   use them.
 * iio_simple_dummy - fix some wrong code indentation.
 * bmc150-accel - use the chip ID to detect the chip present rather than
   verifying the expected part was there.  This was in response to a wrong
   ACPI entry on the WinBook TW100.
 * mma8452
   - fix _get_hp_filter_index
   - drop a double include
   - pass up an error code rather than rewriting it
   - range check input values to attribute writes
   - register defs tidy up using GENMASK and reordering them to be easier to
     follow.
   - various coding style cleanups
   - put the Kconfig entry in the write place (alphabetically).
 
 Tools related
 * Tools cleanup - drop an explicity NULL comparison, some unnecessary braces,
   use the ARRAY_SIZE macro, send error messages to stderr instead of dropping
   them in the middle of normal output.
 * Fix tools to allow that scale and offset attributes are optional.
 * More tools fixes including allowing true 32bit data (previously an overflow
   prevented more than 31bits)
 * Drop a stray header guard that ended up in a c file.
 * Make calc_digits static as it isn't exported or in the header.
 * Set ci_array pointer to NULL after free as a protection against non safe
   usage of the tools core code.  Also convert a double pointer to a single
   one as the extra level of indirection was unnecessary.
 
 Docs
 * DocBook introduction by Daniel Baluta.  Glad we are beginning to
   draw together some more introductory docs to suplement the various
   tools / examples.
 * Drop bytes_per_datum sysfs attribute docs as it no longer exists.
 * A whole load of missing / fixing of kernel-doc for the core of IIO.
 * Document the trigger name sysfs attribute in the ABI docs.
 * Minor typos in the ABI docs related to power down modes.
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Merge tag 'iio-for-4.3b-2' 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 the 4.3 cycle.
Take 2 also includes a fix set that was too late for the 4.2 cycle.

As we had a lot of tools and docs work in this set, I have broken those
out into their own categories in this description.

Fixes from the pull request '4th set of IIO fixes for the 4.2 cycle'.
* Poll functions for both event chardev and the buffer one were returning
  negative error codes (via a positive value).
* A recent change to lsiio adding some error handling that was wrong and
  stopped the tool working.
* bmg160 was missing some dependencies in Kconfig
* berlin2-adc had a misshandled register (wrote a value rather than a bitmap)

New device support
* TI opt3001 light sensor
* TXC PA12 ALS and proximity sensor.
* mcp3301 ADC support (in mcp320x driver)
* ST lsm303agr accelerometer and magnetometer drivers (plus some st-sensors
  common support to allow different WHOAMI register addresses, devices with
  fixed scale and allow interrupt equiped magnetometers).
* ADIS16305, ADIS16367, ADIS16445IMUs (in the adis16400 driver)
* ADIS16266 gyro (in the adis16260 driver)
* ADIS16137 gyro (in the adis16136 driver)

New functionality
* mmc35240 DT bindings.
* Inverse unit conversion macros to aid handing of values written to sysfs
  attributes.

Core cleanup
* Forward declaration of struct iio_trigger to avoid a compile warning.

Driver cleanup / fixes
* mxs-lradc
  - Clarify which parts are supported.
  - Fix spelling erorrs.
  - Missing/extra includes
  - reorder includes
  - add datasheet name listings for all usable channels (to allow them
    to be bound by name from consumer drivers)
* acpi-als - add some function prefixes as per general iio style.
* bmc150_magn - replace a magic value with the existing define.
* vf610 - determine possible sample frequencies taking into account the
  electrical characteristics (defining a minimum sample time)
* dht11
  - whitespace
  - additional docs
  - avoid mulitple assignments in one line
  - Use the new funciton ktime_get_resolution_ns to cleanup a nasty trick
    previously used for timing.
* Fix all drivers that consider 0 a valid IRQ for historical reasons.
* Export I2C module alias info where previously missing (to allow autoprobing)
* Export OF module alias info where previously missing.
* mmc35240 - switch some variables into arrays to improve readability.
* mlx90614 - define some magic numbers for readability.
* bmc150_magn
  - expand area locked by a mutex to cover all the use of the
    data->buffer.
  - use descriptive naming for a mask instead of a magic value.
* berin2-adc
  - pass up an error code rather that a generic error
  - constify the iio_chan_spec
  - some other little tidy ups.
* stk8312
  - fix a dependency on triggered buffers in kconfig
  - add a check for invalid attribute values
  - improve error handling by returning error codes where possible and
    return immediately where relevant
  - rework macro defs to use GENMASK etc
  - change some variable types to reduce unnecessary casting
  - clean up code style
  - drop a local buffer copy for bulk reads and use the one in data->buffer
     instead.
* adis16400 - the adis16448 gyroscope scale was wrong.
* adis16480 - some more wrong scales for various parts.
* adis16300 - has an undocumented product id and serial number registers so
  use them.
* iio_simple_dummy - fix some wrong code indentation.
* bmc150-accel - use the chip ID to detect the chip present rather than
  verifying the expected part was there.  This was in response to a wrong
  ACPI entry on the WinBook TW100.
* mma8452
  - fix _get_hp_filter_index
  - drop a double include
  - pass up an error code rather than rewriting it
  - range check input values to attribute writes
  - register defs tidy up using GENMASK and reordering them to be easier to
    follow.
  - various coding style cleanups
  - put the Kconfig entry in the write place (alphabetically).

Tools related
* Tools cleanup - drop an explicity NULL comparison, some unnecessary braces,
  use the ARRAY_SIZE macro, send error messages to stderr instead of dropping
  them in the middle of normal output.
* Fix tools to allow that scale and offset attributes are optional.
* More tools fixes including allowing true 32bit data (previously an overflow
  prevented more than 31bits)
* Drop a stray header guard that ended up in a c file.
* Make calc_digits static as it isn't exported or in the header.
* Set ci_array pointer to NULL after free as a protection against non safe
  usage of the tools core code.  Also convert a double pointer to a single
  one as the extra level of indirection was unnecessary.

Docs
* DocBook introduction by Daniel Baluta.  Glad we are beginning to
  draw together some more introductory docs to suplement the various
  tools / examples.
* Drop bytes_per_datum sysfs attribute docs as it no longer exists.
* A whole load of missing / fixing of kernel-doc for the core of IIO.
* Document the trigger name sysfs attribute in the ABI docs.
* Minor typos in the ABI docs related to power down modes.
2015-08-12 12:43:41 -07:00
Javier Martinez Canillas
119c4fce68 iio: Export OF module alias information in missing drivers
The I2C core always reports the MODALIAS uevent as "i2c:<client name"
regardless if the driver was matched using the I2C id_table or the
of_match_table. So technically there's no need for a driver to export
the OF table since currently it's not used.

In fact, the I2C device ID table is mandatory for I2C drivers since
a i2c_device_id is passed to the driver's probe function even if the
I2C core used the OF table to match the driver.

And since the I2C core uses different tables, OF-only drivers needs to
have duplicated data that has to be kept in sync and also the dev node
compatible manufacturer prefix is stripped when reporting the MODALIAS.

To avoid the above, the I2C core behavior may be changed in the future
to not require an I2C device table for OF-only drivers and report the
OF module alias. So, it's better to also export the OF table to prevent
breaking module autoloading if that happens.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-02 16:36:00 +01:00
Javier Martinez Canillas
58e446fcc6 iio: Export I2C module alias information in missing drivers
The I2C core always reports the MODALIAS uevent as "i2c:<client name"
regardless if the driver was matched using the I2C id_table or the
of_match_table. So the driver needs to export the I2C table and this
be built into the module or udev won't have the necessary information
to auto load the correct module when the device is added.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-02 16:35:01 +01:00
Greg Kroah-Hartman
6e64e22449 Merge 4.2-rc4 into staging-next
We want the iio and other fixes in this branch as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 11:10:05 -07:00
Greg Kroah-Hartman
ed15e8880f Merge 4.2-rc3 into staging-next
We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-20 13:21:28 -07:00