Commit Graph

156 Commits

Author SHA1 Message Date
Greg Kroah-Hartman 6c71ee3b61 Third set of IIO new device support, features and cleanups for the 4.8 cycle.
New core features
 - Selection of the clock source for IIO timestamps.  This is done per device
   as it makes little sense to have events in one timebase and data timestamped
   on another.  Biggest reason for this is that we currently use a clock
   source which is non monotonic which can result in 'interesting' data sets.
   (Includes export for get_monotonic_corse64 which Thomas Gleixner didn't mind
    in an earlier version.)
 - MAINTAINERS add the git tree to the list for IIO.
 
 New device support + a kind of indirect staging graduation.
 * Broadcom iproc-static-adc
   - new driver
 * mcp4531
   - support for MCP454x, MCP456x, MCP464x and MCP466x potentiometers
 * mpu6050
   - support the IC20608 6 axis motion tracking device
 * st-sensors
   - support the lis3l02dq + drop the lis3l02dq driver from staging.
   The general purpose driver is missing event support, but good to get
   rid of this driver which was rather long in the tooth.
 
 New driver features
 * ak8975
   - Add vid regulator support and refactor handling in general.
   - Allow a delay after enabling regulators.
   - Runtime and system PM.
 * bmg160
   - filter frequency control support.
 * bmp280
   - SPI device support.
   - EOC interrupt support for the BMP085
   - power management support.
   - supply regulator support.
   - reset gpio support
   - dt bindings for reset gpio and regulators.
   - of table to support device tree registration
 * max1363
   - Device tree bindings.
 * mcp4531
   - Device tree bindings.
 * st-pressure
   - temperature channels as part of triggered buffer (previously not due
   probably to alignment issues - see below).
   - lps22hb open drain interrupt support.
   - lps22hb temperature channel support
 
 Cleanups and reworkings.
 * numerous ADC drivers
   - ensure the iio_dev->dev.of_node is set to the parent dev.of_node so
   as to allow client bindings to find the device.
 * ak8975
   - Fix incorrect handling of missing regulator
   - make sure power is down and remove.
 * bmp280
   - read the calibration data only once as it doesn't change.
 * isl29125
   - Use a few macros to make code a touch more readable.
 * mma8452
   - fix a memory leak on error.
   - drop an unecessary bit of return value handling.
 * potentiometer kconfig
   - typo fix.
 * st-pressure
   - drop some uninformative default assignments of elements of the channel
   array structure (aids readability).
 * st-sensors
   - Harden interrupt handling considerably.  These are actually all using
   level interrupts, but at least two known boards have them wired to
   edge only interrupt chips.  Hence a slightly interesting bit of handling
   is needed in which we first allow for the easy option (level triggered) and
   secondly check the status registers before reenabling edge interrupts and
   fall back to a tight loop in the thread until we successfully clear the
   interrupt.  No harm is done if we never succeed in doing so.  It's an odd
   patch that has been through a lot of revisions to reach a consensus on how
   to handle what is basically broken hardware (which the previous defaults
   allowed to kind of work).
   - Fix alignment to defined storagebytes boundaries.
   - Ensure alignment of power of 2 byte boundaries.  This has always in theory
   been part of the ABI of IIO, but we missed a few that snuck in that need
   fixing.  The effect was minor as they were only followed by timestamp
   channels which were correctly aligned,
   - Add some docs to explain the gain calculations.
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Merge tag 'iio-for-4.8c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Third set of IIO new device support, features and cleanups for the 4.8 cycle.

New core features
- Selection of the clock source for IIO timestamps.  This is done per device
  as it makes little sense to have events in one timebase and data timestamped
  on another.  Biggest reason for this is that we currently use a clock
  source which is non monotonic which can result in 'interesting' data sets.
  (Includes export for get_monotonic_corse64 which Thomas Gleixner didn't mind
   in an earlier version.)
- MAINTAINERS add the git tree to the list for IIO.

New device support + a kind of indirect staging graduation.
* Broadcom iproc-static-adc
  - new driver
* mcp4531
  - support for MCP454x, MCP456x, MCP464x and MCP466x potentiometers
* mpu6050
  - support the IC20608 6 axis motion tracking device
* st-sensors
  - support the lis3l02dq + drop the lis3l02dq driver from staging.
  The general purpose driver is missing event support, but good to get
  rid of this driver which was rather long in the tooth.

New driver features
* ak8975
  - Add vid regulator support and refactor handling in general.
  - Allow a delay after enabling regulators.
  - Runtime and system PM.
* bmg160
  - filter frequency control support.
* bmp280
  - SPI device support.
  - EOC interrupt support for the BMP085
  - power management support.
  - supply regulator support.
  - reset gpio support
  - dt bindings for reset gpio and regulators.
  - of table to support device tree registration
* max1363
  - Device tree bindings.
* mcp4531
  - Device tree bindings.
* st-pressure
  - temperature channels as part of triggered buffer (previously not due
  probably to alignment issues - see below).
  - lps22hb open drain interrupt support.
  - lps22hb temperature channel support

Cleanups and reworkings.
* numerous ADC drivers
  - ensure the iio_dev->dev.of_node is set to the parent dev.of_node so
  as to allow client bindings to find the device.
* ak8975
  - Fix incorrect handling of missing regulator
  - make sure power is down and remove.
* bmp280
  - read the calibration data only once as it doesn't change.
* isl29125
  - Use a few macros to make code a touch more readable.
* mma8452
  - fix a memory leak on error.
  - drop an unecessary bit of return value handling.
* potentiometer kconfig
  - typo fix.
* st-pressure
  - drop some uninformative default assignments of elements of the channel
  array structure (aids readability).
* st-sensors
  - Harden interrupt handling considerably.  These are actually all using
  level interrupts, but at least two known boards have them wired to
  edge only interrupt chips.  Hence a slightly interesting bit of handling
  is needed in which we first allow for the easy option (level triggered) and
  secondly check the status registers before reenabling edge interrupts and
  fall back to a tight loop in the thread until we successfully clear the
  interrupt.  No harm is done if we never succeed in doing so.  It's an odd
  patch that has been through a lot of revisions to reach a consensus on how
  to handle what is basically broken hardware (which the previous defaults
  allowed to kind of work).
  - Fix alignment to defined storagebytes boundaries.
  - Ensure alignment of power of 2 byte boundaries.  This has always in theory
  been part of the ABI of IIO, but we missed a few that snuck in that need
  fixing.  The effect was minor as they were only followed by timestamp
  channels which were correctly aligned,
  - Add some docs to explain the gain calculations.
2016-07-14 12:05:29 +09:00
Greg Kroah-Hartman 7813029a50 Merge 4.7-rc6 into staging-next
We want the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-07-04 08:15:03 -07:00
Gregor Boirie 468c5620d0 iio:imu:mpu6050: icm20608 initial support
Introduce support for Invense ICM20608 IMU, a 6-axis motion tracking device
that combines a 3-axis gyroscope and a 3-axis accelerometer:
http://www.invensense.com/products/motion-tracking/6-axis/icm-20608-2

Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-03 12:39:57 +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 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
Crestez Dan Leonard 6e85dbe4b4 iio: inv_mpu6050: Fix use-after-free in ACPI code
In some cases this can result in incorrectly returning a negative value
from asus_acpi_get_sensor_info and the AK8963 magnetometer failing to
show up.

Note cpm is an alias for buffer.pointer which isn't apparent in this
patch on it's own.

Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-11 17:20:27 +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
Greg Kroah-Hartman 03cce00b4b First round of iio fixes for the 4.7 cycle.
A slightly bumper set due to travel delaying the pull request and a fair few
 issues with the recent merge window patches.  Patches all over the place.
 The st-sensors one is probably the most involved, but definitly solves the
 issues seen.  Note there are some other issues around that handler
 (and the fact that a lot of boards tie a level interrupt chip to an
 edge interrupt only irq chip).  These are not regressions however, so
 will turn up the slow route.
 
 * core
   - iio_trigger_attach_pollfunc had some really badly wrong error handling.
   Another nasty triggered whilst chasing down issues with the st sensors
   rework below.
 * ad5592r
   - fix an off by one error when allocating channels.
 * am2315
   - a stray mutex unlock before we ever take the lock.
 * apds9960
   - missing a parent in the driver model (which should be the i2c device).
   Result is it doesn't turn up under /sys/bus/i2c/devices which some
   userspace code uses for repeatable device identification.
 * as3935
   - ABI usage bug which meant a processed value was reported as raw. Now
     reporting scale as well to ensure userspace has the info it needs.
   - Don't return processed value via the buffer - it doesn't conform to
     the ABI and will overflow in some cases.
   - Fix a wrongly sized buffer which would overflow trashing part of the
     stack.  Also move it onto the heap as part of the fix.
 * bh1780
   - a missing return after write in debugfs lead to an incorrect read and
     a null pointer dereference.
   - dereferencing the wrong pointer in suspend and resume leading to
     unpredictable results.
   - assign a static name to avoid accidentally ending up with no name if
     loaded via device tree.
 * bmi160
   - output data rate for the accelerometer was incorrectly reported. Fix it.
   - writing the output data rate was also wrong due to reverse parameters.
 * bmp280
   - error message for wrong chip ID gave the wrong expected value.
 * hdc100x
   - mask for writing the integration time was wrong allowin g us to get
   'stuck' in a particular value with no way back.
   - temperature reported in celsius rather than millicelsius as per the
   ABI.
   - Get rid of some incorrect data shifting which lead to readings being
   rather incorrect.
 * max44000
   - drop scale attribute for proximity as it is an unscaled value (depends
     on what is in range rather than anything knowable at the detector).
 * st-pressure
   - ABI compliance fixes - units were wrong.
 * st-sensors
   - We introduced some nasty issues with the recent switch over to a
   a somewhat threaded handler in that we broke using a software trigger
   with these devices.  Now do it properly.  It's a larger patch than ideal
   for a fix, but the logic is straight forward.
   - Make sure the trigger is initialized before requesting the interrupt.
   This matters now the interrupt can be shared. Before it was ugly and wrong
   but short of flakey hardware could not be triggered.
   - Hammer down the dataready pin at boot - otherwise with really
   unlucky timing things could get interestingly wedged requiring a hard power
   down of the chip.
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Merge tag 'iio-fixes-for-4.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First round of iio fixes for the 4.7 cycle.

A slightly bumper set due to travel delaying the pull request and a fair few
issues with the recent merge window patches.  Patches all over the place.
The st-sensors one is probably the most involved, but definitly solves the
issues seen.  Note there are some other issues around that handler
(and the fact that a lot of boards tie a level interrupt chip to an
edge interrupt only irq chip).  These are not regressions however, so
will turn up the slow route.

* core
  - iio_trigger_attach_pollfunc had some really badly wrong error handling.
  Another nasty triggered whilst chasing down issues with the st sensors
  rework below.
* ad5592r
  - fix an off by one error when allocating channels.
* am2315
  - a stray mutex unlock before we ever take the lock.
* apds9960
  - missing a parent in the driver model (which should be the i2c device).
  Result is it doesn't turn up under /sys/bus/i2c/devices which some
  userspace code uses for repeatable device identification.
* as3935
  - ABI usage bug which meant a processed value was reported as raw. Now
    reporting scale as well to ensure userspace has the info it needs.
  - Don't return processed value via the buffer - it doesn't conform to
    the ABI and will overflow in some cases.
  - Fix a wrongly sized buffer which would overflow trashing part of the
    stack.  Also move it onto the heap as part of the fix.
* bh1780
  - a missing return after write in debugfs lead to an incorrect read and
    a null pointer dereference.
  - dereferencing the wrong pointer in suspend and resume leading to
    unpredictable results.
  - assign a static name to avoid accidentally ending up with no name if
    loaded via device tree.
* bmi160
  - output data rate for the accelerometer was incorrectly reported. Fix it.
  - writing the output data rate was also wrong due to reverse parameters.
* bmp280
  - error message for wrong chip ID gave the wrong expected value.
* hdc100x
  - mask for writing the integration time was wrong allowin g us to get
  'stuck' in a particular value with no way back.
  - temperature reported in celsius rather than millicelsius as per the
  ABI.
  - Get rid of some incorrect data shifting which lead to readings being
  rather incorrect.
* max44000
  - drop scale attribute for proximity as it is an unscaled value (depends
    on what is in range rather than anything knowable at the detector).
* st-pressure
  - ABI compliance fixes - units were wrong.
* st-sensors
  - We introduced some nasty issues with the recent switch over to a
  a somewhat threaded handler in that we broke using a software trigger
  with these devices.  Now do it properly.  It's a larger patch than ideal
  for a fix, but the logic is straight forward.
  - Make sure the trigger is initialized before requesting the interrupt.
  This matters now the interrupt can be shared. Before it was ugly and wrong
  but short of flakey hardware could not be triggered.
  - Hammer down the dataready pin at boot - otherwise with really
  unlucky timing things could get interestingly wedged requiring a hard power
  down of the chip.
2016-06-07 22:26:20 -07:00
Linus Torvalds 2f37dd131c Staging and IIO driver update for 4.7-rc1
Here's the big staging and iio driver update for 4.7-rc1.
 
 I think we almost broke even with this release, only adding a few more
 lines than we removed, which isn't bad overall given that there's a
 bunch of new iio drivers added.  The Lustre developers seem to have
 woken up from their sleep and have been doing a great job in cleaning up
 the code and pruning unused or old cruft, the filesystem is almost
 readable :)
 
 Other than that, just a lot of basic coding style cleanups in the churn.
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver updates from Greg KH:
 "Here's the big staging and iio driver update for 4.7-rc1.

  I think we almost broke even with this release, only adding a few more
  lines than we removed, which isn't bad overall given that there's a
  bunch of new iio drivers added.

  The Lustre developers seem to have woken up from their sleep and have
  been doing a great job in cleaning up the code and pruning unused or
  old cruft, the filesystem is almost readable :)

  Other than that, just a lot of basic coding style cleanups in the
  churn.  All have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (938 commits)
  Staging: emxx_udc: emxx_udc: fixed coding style issue
  staging/gdm724x: fix "alignment should match open parenthesis" issues
  staging/gdm724x: Fix avoid CamelCase
  staging: unisys: rename misleading var ii with frag
  staging: unisys: visorhba: switch success handling to error handling
  staging: unisys: visorhba: main path needs to flow down the left margin
  staging: unisys: visorinput: handle_locking_key() simplifications
  staging: unisys: visorhba: fail gracefully for thread creation failures
  staging: unisys: visornic: comment restructuring and removing bad diction
  staging: unisys: fix format string %Lx to %llx for u64
  staging: unisys: remove unused struct members
  staging: unisys: visorchannel: correct variable misspelling
  staging: unisys: visorhba: replace functionlike macro with function
  staging: dgnc: Need to check for NULL of ch
  staging: dgnc: remove redundant condition check
  staging: dgnc: fix 'line over 80 characters'
  staging: dgnc: clean up the dgnc_get_modem_info()
  staging: lustre: lnet: enable configuration per NI interface
  staging: lustre: o2iblnd: properly set ibr_why
  staging: lustre: o2iblnd: remove last of kiblnd_tunables_fini
  ...
2016-05-20 22:20:48 -07:00
Linus Torvalds 78975f23cb Merge branch 'i2c/for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:

 - Peter Rosin did some major rework on the locking of i2c muxes by
   seperating parent-locked muxes and mux-locked muxes.

   This avoids deadlocks/workarounds when the mux itself needs i2c
   commands for muxing.  And as a side-effect, other workarounds in the
   media layer could be eliminated.  Also, Peter stepped up as the i2c
   mux maintainer and will keep an eye on these changes.

 - major updates to the octeon driver

 - add a helper to the core to generate the address+rw_bit octal and
   make drivers use it

 - quite a bunch of driver updates

* 'i2c/for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (84 commits)
  i2c: rcar: add DMA support
  i2c: st: Implement bus clear
  i2c: only check scl functions when using generic recovery
  i2c: algo-bit: declare i2c_bit_quirk_no_clk_stretch as static
  i2c: tegra: disable clock before returning error
  [media] rtl2832: regmap is aware of lockdep, drop local locking hack
  [media] rtl2832_sdr: get rid of empty regmap wrappers
  [media] rtl2832: change the i2c gate to be mux-locked
  [media] si2168: change the i2c gate to be mux-locked
  iio: imu: inv_mpu6050: change the i2c gate to be mux-locked
  i2c: mux: document i2c muxes and elaborate on parent-/mux-locked muxes
  i2c: mux: relax locking of the top i2c adapter during mux-locked muxing
  i2c: muxes always lock the parent adapter
  i2c: allow adapter drivers to override the adapter locking
  i2c: uniphier: add "\n" at the end of error log
  i2c: mv64xxx: remove CONFIG_HAVE_CLK conditionals
  i2c: mv64xxx: use clk_{prepare_enable,disable_unprepare}
  i2c: mv64xxx: handle probe deferral for the clock
  i2c: mv64xxx: enable the driver on ARCH_MVEBU
  i2c: octeon: Add workaround for broken irqs on CN3860
  ...
2016-05-19 17:48:12 -07:00
Peter Rosin 1ffcfaf195 iio: imu: inv_mpu6050: change the i2c gate to be mux-locked
The root i2c adapter lock is then no longer held by the i2c mux during
accesses behind the i2c gate, and such accesses need to take that lock
just like any other ordinary i2c accesses do.

So, declare the i2c gate mux-locked, and zap the code that makes the
unlocked i2c accesses and just use ordinary regmap_write accesses.

This also happens to fix the deadlock described in
http://patchwork.ozlabs.org/patch/584776/ authored by
Adriana Reus <adriana.reus@intel.com> and submitted by
Daniel Baluta <daniel.baluta@intel.com>

----------8<----------
iio: imu: inv_mpu6050: Fix deadlock between i2c adapter lock and mpu lock

This deadlock occurs if the accel/gyro and the sensor on the auxiliary
I2C (in my setup it's an ak8975) are working at the same time.

Scenario:

      T1					T2
     ====				       ====
inv_mpu6050_read_fifo                  aux sensor op (eg. ak8975_read_raw)
        |                                     |
mutex_lock(&indio_dev->mlock)           i2c_transfer
        |                                     |
i2c transaction                         i2c adapter lock
        |                                     |
i2c adapter lock                        i2c_mux_master_xfer
                                              |
                                        inv_mpu6050_select_bypass
                                              |
                                        mutex_lock(&indio_dev->mlock)

When we operate on an mpu sensor the order of locking is mpu lock
followed by the i2c adapter lock. However, when we operate the auxiliary
sensor the order of locking is the other way around.

...
----------8<----------

The reason this patch fixes the deadlock is that T2 does not grab the
i2c adapter lock until the very end (and grabs the newfangled i2c mux
lock where it previously grabbed the i2c adapter lock).

Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Tested-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-05-04 22:39:30 +02:00
Daniel Baluta 216912e3f1 imu: bmi160: Add avail frequency and scale attributes
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 10:51:39 +01:00
Daniel Baluta c25d3f37be iio: bmi160: Fix ODR setting
mask and val parameters of regmap_update_bits were reveresed.

Fixes: 77c4ad2d6a ("iio: imu: Add initial support for Bosch BMI160")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 10:50:36 +01:00
Daniel Baluta 5ec97ba071 iio: bmi160: Fix output data rate for accel
Format is INT_PLUS_MICRO and micro odr part of ODR should
be parts of a micro.

Also s/8000/800 this is obviously a typo.

Fixes: 77c4ad2d6a ("iio: imu: Add initial support for Bosch BMI160")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 10:49:00 +01:00
Daniel Baluta 393dbe4e18 iio: imu: mpu6050: Fix name/chip_id when using ACPI
When using ACPI, id is NULL and the current code automatically
defaults name to NULL and chip id to 0. We should instead use
the data provided in the ACPI device table.

Fixes: c816d9e7a5 ("iio: imu: mpu6050: fix possible NULL dereferences")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Reviewed-By: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 08:44:27 +01:00
Matt Ranostay 140afdd962 iio: imu: mpu6050: fix possible NULL dereferences
Fix possible null dereferencing of i2c and spi driver data.

Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-05-04 08:42:00 +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 fbced0e946 iio: inv_mpu6050: Add explicit support for MPU9150
This device is a package containing a MPU6050-like sensor and an AK8975
magnetometer. The magnetometer component is supported by the existing
ak8975 driver.

This patch also rephrases the Kconfig descriptions.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Ge Gao <ggao@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-25 20:19:38 +01:00
Crestez Dan Leonard bf1eb91274 iio: inv_mpu6050: Add spi_device_id for INV_MPU6500
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Ge Gao <ggao@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-25 20:19:29 +01:00
Crestez Dan Leonard cec0154556 iio: inv_mpu6050: Check WHO_AM_I register on probe
This can be used to distinguish mpu6500. This is a warning rather than
an error because the differences are mostly irrelevant and it's nice to
avoid breaking users with slightly incorrect ACPI/DT.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Ge Gao <ggao@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-25 20:19:15 +01:00
Crestez Dan Leonard 7bdd318159 iio: inv_mpu6050: Remove inv_mpu6050_hw.num_reg
This field was unused and incorrect for mpu6500.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-25 19:40:05 +01:00
Crestez Dan Leonard aadd3076db iio: inv_mpu6050: Cleanup hw_info mapping
The hw_info array was indexed by enum inv_devices chip_type despite the
fact that the enumeration had more members than the array and was
ordered differently.

The patch cleans this up and adds explicit chip_types to i2c/spi/acpi
IDs. It also adds some stricter checks inside the driver core.

This happened to work so far because the differences between the
supported models are very minor.

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Ge Gao <ggao@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-25 19:38:52 +01:00
Gregor Boirie eb3798463f iio:imu:mpu6050: enhance mounting matrix support
Add a new rotation matrix sysfs attribute compliant with IIO core
mounting matrix API.
Matrix is retrieved from "in_anglvel_mount_matrix" and
"in_accel_mount_matrix" sysfs attributes. It is declared into mpu6050 DTS
entry as a "mount-matrix" property.

Old interface is kept for backward userspace compatibility and may be
retrieved from legacy platform_data mechanism only.

Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-23 22:16:01 +01:00
Peter Rosin 51f97f6dd7 iio: imu: inv_mpu6050: convert to use an explicit i2c mux core
Allocate an explicit i2c mux core to handle parent and child adapters
etc. Update the select/deselect ops to be in terms of the i2c mux core
instead of the child adapter.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Tested-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-04-22 15:00:05 +02:00
Lars-Peter Clausen af8a41271b iio:adis: Add support for manual self-test flag clear
Some variants of the devices from the ADIS family don't auto-clear the
self-test bit after the self-test has completed. Instead we have to
manually clear. Add support for this to the ADIS library.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-16 13:42:43 +01:00
Daniel Baluta 77c4ad2d6a iio: imu: Add initial support for Bosch BMI160
BMI160 is an Inertial Measurement Unit (IMU) which provides acceleration
and angular rate measurement. It also offers a secondary I2C interface
for connecting a magnetometer sensor (usually BMM160).

Current driver offers support for accelerometer and gyroscope readings
via sysfs or via buffer interface using an external trigger (e.g.
hrtimer). Data is retrieved from IMU via I2C or SPI interface.

Datasheet is at:
	http://www.mouser.com/ds/2/783/BST-BMI160-DS000-07-786474.pdf

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
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
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
Richard Weinberger f7072198f2 iio: imu: Fix inv_mpu6050 dependencies
Not all archs have io memory.
Instead of selecting I2C_MUX (and bypassing the HAS_IOMEM dependency)
depend directly on it.

Fixes the following kconfig warning:
warning: (MEDIA_SUBDRV_AUTOSELECT && VIDEO_CX231XX && INV_MPU6050_I2C) selects I2C_MUX which has unmet direct dependencies (I2C && HAS_IOMEM)
And this build error:
ERROR: "devm_ioremap_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined!
ERROR: "of_address_to_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined!

Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-03-28 09:52:09 +01:00
Daniel Baluta 718ba46e5f iio: imu: mpu6050: Fix name/chip_id when using ACPI
When using ACPI, id is NULL and the current code automatically
defaults name to NULL and chip id to 0. We should instead use
the data provided in the ACPI device table.

Fixes: c816d9e7a5 ("iio: imu: mpu6050: fix possible NULL dereferences")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Reviewed-By: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-03-20 10:39:49 +00:00
Matt Ranostay c816d9e7a5 iio: imu: mpu6050: fix possible NULL dereferences
Fix possible null dereferencing of i2c and spi driver data.

Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-03-05 17:51:10 +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
Matt Ranostay 33da559f86 iio: imu: mpu6050: add mpu6500 register settings
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-25 19:54:27 +00:00
Matt Ranostay d509844714 iio: imu: mpu6050: add calibration offset support
Allow setting of the x/y/z axes calibration offsets for the gyroscope
and accelerometer.

Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-25 19:53:30 +00:00
Matt Ranostay 725f645d87 iio: imu: mpu6050: add missing docstring for int_pin_cfg
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-25 19:48:57 +00:00
Matt Ranostay 8f356be3fe iio: imu: mpu6050: fix INV_MPU6050_REG_UP_TIME delay
replace msleep(INV_MPU6050_REG_UP_TIME) with usleep_range calls
due to fact the wait time is under 20 milliseconds.

Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-25 19:48:47 +00:00
Matt Ranostay 115f0341bc iio: imu: mpu6050: use inv_mpu6050_sensor_show return code
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-25 19:48:30 +00:00
Matt Ranostay 3afdf6cf9d iio: imu: mpu6050: remove trailing whitespaces
removed several trailing whitespaces before assignment operations

Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:48 +00:00
Daniel Baluta fc0dccdda1 iio: imu: inv_mpu6050: Fix alignment with open parenthesis
This makes code consistent around inv_mpu6050 driver and
fixes the following checkpatch.pl warning:
CHECK: Alignment should match open parenthesis

Note that there were few cases were it was not possible to
fix this due to making the line too long, but we can live with that.

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:45 +00:00
Daniel Baluta 371a76603c iio: imu: inv_mpu6050: Fix code indent for if statement
This fixes the following checkpatch.pl warning:

WARNING: suspect code indent for conditional statements (8, 24)
+       if (kfifo_len(&st->timestamps) >
[...]
+                       goto flush_fifo;

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:44 +00:00
Daniel Baluta aeeb18fcf6 iio: imu: inv_mpu6050: Delete space before comma
This fixes the following checkpatch.pl warning:

ERROR: space prohibited before that ',' (ctx:WxE)
		.shift = 0 ,

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:44 +00:00
Daniel Baluta 0e79137531 iio: imu: inv_mpu6050: Remove unnecessary parentheses
Fixes the following checkpatch warning:
CHECK: Unnecessary parentheses around cpm->package.elements[i]

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:43 +00:00
Daniel Baluta d92241a0dc iio: imu: inv_mpu6050: Fix newlines to make code easier to read
This fixes the following checkpatch.pl warnings:
	* WARNING: Missing a blank line after declarations
	* CHECK: Blank lines aren't necessary before a close brace '}'

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:43 +00:00
Daniel Baluta acf7146ec9 iio: imu: inv_mpu6050: Fix Yoda conditions
This fixes the following checkpatch warning:
	* WARNING: Comparisons should place the constant
	  on the right side of the test

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:42 +00:00
Daniel Baluta 23c5edccbf iio: imu: inv_mpu6050: Fix multiline comments style
The preffered style for long (multi-line) comments is:

/*
 * this is a multiline
 * comment
 */

This also fixes checkpatch.pl warning:
WARNING: Block comments use * on subsequent lines

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:41 +00:00
Adriana Reus fd64df16f4 iio: imu: inv_mpu6050: Add SPI support for MPU6000
The only difference between the MPU6000 and the
MPU6050 is that the first also supports SPI.
Add SPI driver for this chip.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-13 20:54:07 +00:00
Adriana Reus b3eea8dacf iio: imu: inv_mpu6050: Separate driver into core and i2c functionality.
Separate this driver into core and i2c functionality.
This is in preparation for adding spi support.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-13 20:54:00 +00:00
Adriana Reus d430f3c36c iio: imu: inv_mpu6050: Use regmap instead of i2c specific functions
Use regmap instead of i2c specific functions.
This is in preparation of splitting this driver into core and
i2c specific functionality.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Acked-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-13 20:53:50 +00:00
Adriana Reus c278ac0ecd iio: imu: inv-mpu6050: Fix interrupt pin configuration
The select/deselect_bypass duo writes the irq number into the interrupt
configuration register.
If there is a i2c slave device connected to the mpu (eg. a magnetometer)
then this can hinder interrupt delivery for the accelerometer and
gyroscope.
Set this register to the default configuration.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-13 20:52:47 +00:00
Greg Kroah-Hartman fec2f3335c First round of new IIO device support, features and cleanups for the 4.6 cycle.
Device Support
 * ad5761
   - new driver
 * at91_sama5d2 ADC.
   - new driver and MAINTAINERS entry.
   - minor cleanups followed.
 * atlas pH-SM
   - new driver (this has possibly the prettiest data sheet I've ever seen)
 * mcp3422
   - mcp3425 ADC added.
 * mcp4725
   - mcp4726 DAC added.
 * mma8452
   - mma8451q accelerometer added.
 * mpl115
   - mpl115a1 added (a lot bigger than it seems as this is an SPI part whereas
     previous parts were i2c).
 * si7005
   - Hoperf th02 (seems to be a repackaged part)
 * si7020
   - Hoperf th06 (seems to be a repackaged part)
 
 New features
 * Core
   - IIO_PH type. Does what it says on the tin.
 * max30100
   - LED current configuration support.
 * mcp320x
   - more differential measurement combinations.
 * mma8452
   - free fall deteciton
 - opt3001
   - enable operation without a IRQ line.
   - device tree docs.  Somehow the original docs have disappeared down
     a rabbit hole, so here is a new set.
 * st-sensors
   - Support active-low interrupts.
 
 Cleanups and minor / not so minor reworks
 * Documentation
   - drop some defunct ABI from the docs in staging.
 * presure / Kconfig
   - white space cleanup.
 * ad7150
   - BIT macro usage
   - Alignment fixes
 * ad7192
   - false indent fixed.
 * ak8975
   - constify the ak_def structures
 * axp288
   - drop a redundant double const.
 * dht11
   - substantial reliability improvements by being more tolerant
     of missing start bits.
   - simplify the decoding algorithm
 * mma8452
   - whitespace cleanup
 * mpl115
   - don't bother setting i2c_client_data as nothing uses it.
 * mpu6050
   - drop unused function parameter.
 * opt3001
   - extract integration time as constants.
   - trivial refactoring.
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Merge tag 'iio-for-4.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new IIO device support, features and cleanups for the 4.6 cycle.

Device Support
* ad5761
  - new driver
* at91_sama5d2 ADC.
  - new driver and MAINTAINERS entry.
  - minor cleanups followed.
* atlas pH-SM
  - new driver (this has possibly the prettiest data sheet I've ever seen)
* mcp3422
  - mcp3425 ADC added.
* mcp4725
  - mcp4726 DAC added.
* mma8452
  - mma8451q accelerometer added.
* mpl115
  - mpl115a1 added (a lot bigger than it seems as this is an SPI part whereas
    previous parts were i2c).
* si7005
  - Hoperf th02 (seems to be a repackaged part)
* si7020
  - Hoperf th06 (seems to be a repackaged part)

New features
* Core
  - IIO_PH type. Does what it says on the tin.
* max30100
  - LED current configuration support.
* mcp320x
  - more differential measurement combinations.
* mma8452
  - free fall deteciton
- opt3001
  - enable operation without a IRQ line.
  - device tree docs.  Somehow the original docs have disappeared down
    a rabbit hole, so here is a new set.
* st-sensors
  - Support active-low interrupts.

Cleanups and minor / not so minor reworks
* Documentation
  - drop some defunct ABI from the docs in staging.
* presure / Kconfig
  - white space cleanup.
* ad7150
  - BIT macro usage
  - Alignment fixes
* ad7192
  - false indent fixed.
* ak8975
  - constify the ak_def structures
* axp288
  - drop a redundant double const.
* dht11
  - substantial reliability improvements by being more tolerant
    of missing start bits.
  - simplify the decoding algorithm
* mma8452
  - whitespace cleanup
* mpl115
  - don't bother setting i2c_client_data as nothing uses it.
* mpu6050
  - drop unused function parameter.
* opt3001
  - extract integration time as constants.
  - trivial refactoring.
2016-02-01 13:10:03 -08:00