Commit Graph

2100 Commits

Author SHA1 Message Date
Bhaktipriya Shridhar 09971adc33 staging: iio: addac: Remove unnecessary else after return
This patch fixes the checkpatch warning that else is not generally
useful after a break or return.

This was done using Coccinelle:
@@
expression e2;
statement s1;
@@
if(e2) { ... return ...; }
-else
         s1
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Georgiana Chelu 0d9363c5f7 Staging: iio: Fixed block comments warning
Fixed the following warning:
WARNING: Block comments use a trailing */ on a separate line

Signed-off-by: Georgiana Chelu <georgiana.chelu93@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Sandhya Bankar 63ac41f5d8 Staging: iio: ade7854: Remove unnecessary goto.
Remove unnecessary goto.

Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Sandhya Bankar 3949d9292a Staging: iio: ade7758_core: Remove unnecessary goto.
Remove unnecessary goto.

Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Sandhya Bankar 78731a01f4 Staging: iio: ade7754: Remove unnecessary goto.
Remove unnecessary goto.

Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Amitoj Kaur Chawla 09b9da3399 staging: iio: adc: Replace of_iomap() with devm_ioremap_resource()
The adc driver uses of_iomap() which doesn't request the resource and
isn't device managed so error handling is needed. of_iomap() is mainly
used in cases where there is no driver or struct device so a switch to
devm_ functions is required.

This patch switches to use devm_ioremap_resource() instead which
automatically requests the resource and is freed when the driver
detaches.

Removed the error handling to unmap I/O registers i.e.
iounmap() in probe and remove functions of this driver and
consequently removed an unnecessary label.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Alison Schofield a04b4e5005 staging: iio: ade7854: use devm_iio_device_register
Replace iio_device_register with the device managed version.
This change is safe because it does not change the order of
any device removal actions. Unregistering the device was the
only removal action. The newly emptied .remove functions are
deleted.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Alison Schofield 8f27f7323f staging: iio: adt7316: remove useless initialization
Remove the initialization of a variable that is immediately
reassigned.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Alison Schofield e3f9555202 staging: iio: light: tsl2x7x: remove useless initialization
Remove the initialization of a variable that is immediately
reassigned.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Greg Kroah-Hartman ec3c13e4ac Third set of IIO new device support, features and cleanups for the 4.6 cycle.
Good to see several new contributors in this set - and more generally a
 number of new 'faces' over this whole cycle.
 
 Staging movements
 * hmc5843
   - out of staging.
 * periodic RTC trigger
   - driver dropped.  This is an ancient driver (brings back some memories ;)
   that was always somewhat of a bodge. Originally there was a driver that
   never went into mainline that supported large numbers of periodict timers
   on the PXA270 via this route. Discussions to have a generic periodic
   timer subsystem never went anywhere.  At the time RTC periodic
   interrupts were real - now they are emulated using high resolution
   timers so with the HRT driver this has become pointless.
 
 New device support
 * mpu6050 driver
   - Add support for the mpu6500.
 * TI tpl0102 potentiometer
   - new driver.
 * Vybrid SoC DAC
   - new driver.  The ADC on this SoC has been supported for a while, this
     adds a separate driver for the DAC.
 
 New Features
 * hmc5844
   - Attributes to configure the bias current (typically part of a self test)
     This could be done before via a somewhat obscure custom interface.
     This at least makes it easy to tell what is going on.
   - Document all custom attributes.
 * mpu6050
   - Add support for calibration offset control and readback.
 * ms5611
   - power regulator support.  This is always one that gets added the
     first time someone has a board that needs it.  Here it was needed,
     hence it was added.
 
 Cleanups / minor fixes
 * tree wide
   - clean up all the myriad different return values in response to a
     failure of i2c_check_functionality.  After discussions everyone seemed
     happy wiht -EOPNOTSUPP which seems to describe the situation well.
     I encouraged a tree wide cleanup to set a good example in future for
     this.
 * core
   - Typos in the iio_event_spec documentation in iio.h
 * afe4403
   - select REGMAP_SPI to avoid dependency issues
   - mark suspend/resume as __maybe_unused to avoid warnings
 * afe4404
   - mark suspend/resume as __maybe_unused to avoid warnings
 * atlas-ph-sensor
   - switch the regmap cache type from linear to rbtree to gain reading of
     registers on initial startup.  It's not immediately obvious, but
     regmap flat is meant for high performances cases so doesn't read these
     registers.
   - use regmap_bulk_read in one case where it was using
     i2c_smbus_read_i2c_block_data directly (unlike everything else that was
     through regmap).
 * ina2xx
   - stype cleanups (lots of them!)
 * isl29018
   - Get the struct device back from regmap rather than storing another
     copy of it in the private data.  This cleanup makes sense in a number
     of other drivers so patches may well follow.
 * mpu6050
   - style cleanups (lots of them!)
   - improved return value handling
   - use usleep_range to avoid the usual issues with very short msleeps.
   - add some missing documentation.
 * ms5611
   - use the probed device name for the device rather than the driver name.
   - select IIO_BUFFER to avoid dependency issues
 * palmas
   - drop IRQF_EARLY_RESUME as no longer needed after genirq changes.
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Merge tag 'iio-for-4.6c' 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 4.6 cycle.

Good to see several new contributors in this set - and more generally a
number of new 'faces' over this whole cycle.

Staging movements
* hmc5843
  - out of staging.
* periodic RTC trigger
  - driver dropped.  This is an ancient driver (brings back some memories ;)
  that was always somewhat of a bodge. Originally there was a driver that
  never went into mainline that supported large numbers of periodict timers
  on the PXA270 via this route. Discussions to have a generic periodic
  timer subsystem never went anywhere.  At the time RTC periodic
  interrupts were real - now they are emulated using high resolution
  timers so with the HRT driver this has become pointless.

New device support
* mpu6050 driver
  - Add support for the mpu6500.
* TI tpl0102 potentiometer
  - new driver.
* Vybrid SoC DAC
  - new driver.  The ADC on this SoC has been supported for a while, this
    adds a separate driver for the DAC.

New Features
* hmc5844
  - Attributes to configure the bias current (typically part of a self test)
    This could be done before via a somewhat obscure custom interface.
    This at least makes it easy to tell what is going on.
  - Document all custom attributes.
* mpu6050
  - Add support for calibration offset control and readback.
* ms5611
  - power regulator support.  This is always one that gets added the
    first time someone has a board that needs it.  Here it was needed,
    hence it was added.

Cleanups / minor fixes
* tree wide
  - clean up all the myriad different return values in response to a
    failure of i2c_check_functionality.  After discussions everyone seemed
    happy wiht -EOPNOTSUPP which seems to describe the situation well.
    I encouraged a tree wide cleanup to set a good example in future for
    this.
* core
  - Typos in the iio_event_spec documentation in iio.h
* afe4403
  - select REGMAP_SPI to avoid dependency issues
  - mark suspend/resume as __maybe_unused to avoid warnings
* afe4404
  - mark suspend/resume as __maybe_unused to avoid warnings
* atlas-ph-sensor
  - switch the regmap cache type from linear to rbtree to gain reading of
    registers on initial startup.  It's not immediately obvious, but
    regmap flat is meant for high performances cases so doesn't read these
    registers.
  - use regmap_bulk_read in one case where it was using
    i2c_smbus_read_i2c_block_data directly (unlike everything else that was
    through regmap).
* ina2xx
  - stype cleanups (lots of them!)
* isl29018
  - Get the struct device back from regmap rather than storing another
    copy of it in the private data.  This cleanup makes sense in a number
    of other drivers so patches may well follow.
* mpu6050
  - style cleanups (lots of them!)
  - improved return value handling
  - use usleep_range to avoid the usual issues with very short msleeps.
  - add some missing documentation.
* ms5611
  - use the probed device name for the device rather than the driver name.
  - select IIO_BUFFER to avoid dependency issues
* palmas
  - drop IRQF_EARLY_RESUME as no longer needed after genirq changes.
2016-03-01 16:31:55 -08:00
Lars-Peter Clausen c720842e36 staging:iio: Remove periodic RTC trigger driver
With the recently introduced hrtimer based trigger we have a fully
functional replacement for the RTC timer trigger that is more flexible and
has a better interface to instantiate and manage the trigger instances. The
RTC trigger timer could only be instantiated using platform devices which
makes it unsuitable for modern devicetree based platforms, while the
hrtimer trigger has a configfs based interface that allows creating and
deletion of triggers at runtime.

In addition since a few years the periodic RTC timer is internally always
emulated using a hrtimer using the hrtimer interface directly will yield
the same timing precision. So using the RTC timer won't have any advantages
on this front either.

There is also no evidence that the periodic RTC trigger is currently
actually being used on any system. So considering all this remove the
driver. Also remove the related item from the TODO list.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-27 17:18:38 +00:00
Alison Schofield 646708693e staging: iio: isl29018: use regmap to retrieve struct device
Remove struct device from drivers global data and use regmap
API to retrieve device info instead.

This replacement can be done for drivers that include regmap
in their global data.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 21:15:24 +00:00
Cristina Moraru 7247645f68 iio: hmc5843: Move hmc5843 out of staging
This patch moves hmc5843 driver from staging/iio/magnetometer
to iio/magnetometer, updates the corresponding Makefiles and
moves the hmc5843* entries to the 'Industrial I/O support ->
Magnetometer sensors' menu.

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-24 20:40:39 +00:00
Cristina Moraru 1c7be4c260 iio: hmc5843: Add attributes for measurement config of bias current
Change static attribute meas_conf for bias current configuration
to channel attribute in_magn_meas_conf and also add
in_magn_meas_conf_available attribute to view available configurations.

This patch solves functionality bug: driver was using same function
hmc5843_set_measurement_configuration for setting bias current config
for all device types but the function was returning -EINVAL for any
setting >= 0x03 although, for sensor HMC5983, value 3 is valid.

API for setting bias measurement configuration:

normal - 	Normal measurement configuration (default):
		In normal measurement configuration the device
		follows normal measurement flow. Pins BP and BN
		are left floating and high impedance.

positivebias - 	Positive bias configuration: In positive bias
		configuration, a positive current is forced across
		the resistive load on pins BP and BN.

negativebias - 	Negative bias configuration. In negative bias
		configuration, a negative current is forced across
		the resistive load on pins BP and BN.

disabled     - 	Only available on HMC5983. Magnetic sensor is disabled.
		Temperature sensor is enabled.

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-21 20:22:21 +00:00
Eva Rachel Retuya b5b6e7beb0 staging: iio: resolver: fix comparison to NULL
Remove comparison of spi->dev.platform_data to NULL by replacing it with
'!spi->dev.platform_data' as checkpatch suggested:

CHECK: Comparison to NULL could be written "!spi->dev.platform_data"

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya c7e426d1c5 staging: iio: resolver: remove unnecessary blank line
Delete the excess newline. Issue found by checkpatch.

CHECK: Please don't use multiple blank lines

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya c3f63dd6fe staging: iio: resolver: delete space after a cast
Delete unwanted whitespace after casting. Issue pointed out by
checkpatch.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya 84681c7c85 staging: iio: resolver: add missing braces on if-else statements
Add braces around the else clause to adhere to kernel coding style. This
clears the following checkpatch issue:

CHECK: braces {} should be used on all arms of this statement

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya 8d80ccbb1e staging: iio: resolver: use blank line after array declaration
Add a blank line after array declaration. This clears the checkpatch
check:

CHECK: Please use a blank line after function/struct/union/enum
declarations

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya cdd6dee0f1 staging: iio: resolver: add spaces around operators
Add spaces around operators to improve readability and to address the
checkpatch issue:

CHECK: spaces preferred around that '/' (ctx:VxV)

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya ae6394aaf1 staging: iio: resolver: align to match open parenthesis
Use a combination of tabs and spaces to align parameters to its
corresponding open parenthesis. Checkpatch found this issue.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:46:35 -08:00
Eva Rachel Retuya ddab4a02c4 staging: iio: light: fix multiple assignments in a single line
Rewrite the multiple assignments to clear checkpatch check:

CHECK: multiple assignments should be avoided

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:56 -08:00
Eva Rachel Retuya e537daa198 staging: iio: light: add space around '*"
Address checkpatch check pointing out the lack of space around the
operator '*'.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:56 -08:00
Eva Rachel Retuya 7f3829a354 staging: iio: light: fix block comments according to kernel coding style
Add the trailing */ accordingly to suit the preferred way of placing
block comments.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:56 -08:00
Eva Rachel Retuya 79783b31d5 staging: iio: light: omit space after a cast
Remove the unneeded space as pointed out by checkpatch:
CHECK: No space is necessary after a cast

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:56 -08:00
Eva Rachel Retuya ca52c88cac staging: iio: light: indent to match open parenthesis
Indent the parameters to match open parenthesis as suggested by checkpatch.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:56 -08:00
Janani Ravichandran 911568be45 staging: iio: accel: Remove unnecessary else after goto in if block
This patch removes the unnecessary else following an if block with a
goto statement.

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:45:05 -08:00
Amitoj Kaur Chawla 0fd736f9f4 staging: iio: adc: Remove unnecessary test from if conditions
Remove unnecessary test condition on ret variable which has been
previously tested and returns its value if the value is non zero.

This fixes the following smatch warnings:
drivers/staging/iio/adc/ad7816.c:299 ad7816_set_oti() warn: we tested
'ret' before and it was 'false'
drivers/staging/iio/adc/ad7816.c:306 ad7816_set_oti() warn: we tested
'ret' before and it was 'false'

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-20 14:43:48 -08:00
Bhumika Goyal 343af6379e Staging: iio: magnetometer: remove exceptional & on function name
In this file,function names are otherwise used as pointers without &.
Found using coccinelle.
// <smpl>
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14 16:44:06 -08:00
Bhumika Goyal df27103469 Staging: iio: light: remove exceptional & on function name
In this file,function names are otherwise used as pointers without &.
Found using coccinelle.
// <smpl>
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14 16:44:06 -08:00
Bhumika Goyal 6d9b10c866 Staging: iio: light: remove exceptional & on function name
In this file,function names are otherwise used as pointers without &.
Found using coccinelle.
// <smpl>
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14 16:44:06 -08:00
Greg Kroah-Hartman d9750a2f9e 2nd round of new IIO device support, features and cleanups for the 4.6 cycle.
New Device Support
 * Apex stx104 DAC
   - new driver for this PC104 board. Right now DAC support only.
 * ADI ad5064
   - Add support for ad5625, ad5627, ad5645, ad5665, ad5667 DACs.
   - Add support for Linear Technology ltc2606, ltc2607, ltc2609, ltc2616,
     ltc2617, ltc2619, ltc2626, ltc2627 and ltc2629.
 * ADI ad7192
   - add support for the ad7193
 * Invensense mpu6050
   - substantial rework of driver to use regmap allowing SPI support extending
     the now split driver to cover the MPU6000.
 * TI adc0832
   - new driver supporting ADC0831, ADC0832, ADC0834 and ADC0838 ADCs.
 * TI ads1015
   - new driver, note that there is an existing hwmon driver. The long term
     intention is to probably remove the hwmon driver but for now we just have
     guards in place to ensure this driver is not built if that one is enabled.
 * TI afe4403
   - new driver for this heart rate monitor / pulse oximeter front end chip.
 * TI afe4404
   - new driver for this heart rate monitor / pulse oximeter front end chip.
 
 Staging Graduations
 * mxs-lradc
   - A combined general purpose and touch screen (input) device driver.
     Originally held in staging to allow reworking into and MFD but as
     that wasn't happening and isn't an absolute requirement we are moving
     it out of staging.
 
 Driver new features
 * ms5611
   - triggered buffer support
   - IIO_CHAN_INFO_SCALE to aid the triggered buffer support.
 
 Driver cleanups / reworks / fixes
 * ad5064
   - Use an enum for the register map layout to allow support of additional
     chips (precursor to the new support listed above).
   - Structural driver changes to allow support of the slightly different
     handling for the ltc parts above.
 * ad5933
   - drop an exceptional & unnecessary for a function pointer.
 * ad7606
   - Cleanup the repeated copies of pm ops.
   - consolidate the various channels specs via a sport of rearranging so only
     one version is needed.
 * atlas ph sensor
   - add select IRQ_WORK
 * hmc8543 (soon to move out of staging)
   - Comment style fixes
   - functionality of suspend and resume was swapped.
 * spear-adc
   - use devm_clk_dev instead of managing the clk lifetime by hand.
 
 Core
 * Use new dmaengine_terminate_sync call to avoid a theoretical race.
 * Fix docs for mlock in struct iio_dev as it is correctly taken in some
   drivers (docs used to say for core only).
 * Add a helper function for calculating the scan index storage size within
   the core cutting out some cut and paste versions of the same code.
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Merge tag 'iio-for-4.6b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

2nd round of new IIO device support, features and cleanups for the 4.6 cycle.

New Device Support
* Apex stx104 DAC
  - new driver for this PC104 board. Right now DAC support only.
* ADI ad5064
  - Add support for ad5625, ad5627, ad5645, ad5665, ad5667 DACs.
  - Add support for Linear Technology ltc2606, ltc2607, ltc2609, ltc2616,
    ltc2617, ltc2619, ltc2626, ltc2627 and ltc2629.
* ADI ad7192
  - add support for the ad7193
* Invensense mpu6050
  - substantial rework of driver to use regmap allowing SPI support extending
    the now split driver to cover the MPU6000.
* TI adc0832
  - new driver supporting ADC0831, ADC0832, ADC0834 and ADC0838 ADCs.
* TI ads1015
  - new driver, note that there is an existing hwmon driver. The long term
    intention is to probably remove the hwmon driver but for now we just have
    guards in place to ensure this driver is not built if that one is enabled.
* TI afe4403
  - new driver for this heart rate monitor / pulse oximeter front end chip.
* TI afe4404
  - new driver for this heart rate monitor / pulse oximeter front end chip.

Staging Graduations
* mxs-lradc
  - A combined general purpose and touch screen (input) device driver.
    Originally held in staging to allow reworking into and MFD but as
    that wasn't happening and isn't an absolute requirement we are moving
    it out of staging.

Driver new features
* ms5611
  - triggered buffer support
  - IIO_CHAN_INFO_SCALE to aid the triggered buffer support.

Driver cleanups / reworks / fixes
* ad5064
  - Use an enum for the register map layout to allow support of additional
    chips (precursor to the new support listed above).
  - Structural driver changes to allow support of the slightly different
    handling for the ltc parts above.
* ad5933
  - drop an exceptional & unnecessary for a function pointer.
* ad7606
  - Cleanup the repeated copies of pm ops.
  - consolidate the various channels specs via a sport of rearranging so only
    one version is needed.
* atlas ph sensor
  - add select IRQ_WORK
* hmc8543 (soon to move out of staging)
  - Comment style fixes
  - functionality of suspend and resume was swapped.
* spear-adc
  - use devm_clk_dev instead of managing the clk lifetime by hand.

Core
* Use new dmaengine_terminate_sync call to avoid a theoretical race.
* Fix docs for mlock in struct iio_dev as it is correctly taken in some
  drivers (docs used to say for core only).
* Add a helper function for calculating the scan index storage size within
  the core cutting out some cut and paste versions of the same code.
2016-02-14 11:10:38 -08:00
Janani Ravichandran 77cb59a42b staging: iio: Remove parentheses on the right hand side of assignment
Remove parentheses on the right hand side of assignment as they are not
needed. Semantic patch used:

@@
expression a, b, c, d;
@@

(
  a = (c == d)
|
  a =
- (
  b
- )
)
Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-11 19:37:15 -08:00
Ksenija Stanojevic f836c45922 iio: adc: Move mxs-lradc out of staging
Move mxs-lradc driver from drivers/staging/iio/adc to drivers/iio/adc.

Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-10 19:29:37 +00:00
Janani Ravichandran 8c79c49c80 staging: iio: Remove parantheses around right hand side of assignment
Remove parantheses on the right hand side of assignments as they are not
needed. Coccinelle patch used:
@@
expression a, b, c, d;
@@

(
  a = (c == d)
|
  a =
- (
  b
- )
)

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-09 17:51:57 -08:00
Cristina Moraru 4630adb8ec iio: hmc5843: Fix comment style warnings
Fix comment style warnings in order to comply with Coding Style
standard provided by Documentation/CodingStyle.

This patch solves following issue found with checkpatch:
WARNING: Block comments use a trailing */ on a separate line

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-09 22:17:21 +00:00
Cristina Moraru c099225f0a iio: hmc5843: Swap suspend and resume implementations
Swap implementations of hmc5843_common_suspend and
hmc5843_common_resume functions for they have been
inversed. Device should go on SLEEP mode on suspend
and on CONTINUOUS mode on resume.

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-09 22:10:51 +00:00
Lars-Peter Clausen d69051b401 staging:iio:ad7192: Add support for the AD7193
The AD7193 is mostly register map compatible to the AD7192. The main
difference is that it has 8 instead of 4 inputs, so the way the input
channels are selected is slightly different.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-09 22:03:43 +00:00
Lars-Peter Clausen 2c3a523632 staging:iio:ad7606: Consolidate PM ops
Both the SPI and platform device driver for the ad7606 use the same set of
PM ops. Consolidate them in the common part of the driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-08 18:30:51 +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
Gujulan Elango, Hari Prasath (H.) b8cc27ca4c staging: iio: replace clk_get() with devm_clk_get()
This patch replaces the clk_get() with devm_clk_get().Accordingly,modified
the error paths,rename error labels and removed clk_put() in probe() &
remove functions.

Signed-off-by: Hari Prasath Gujulan Elango <hgujulan@visteon.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-06 18:42:54 +00:00
Bhumika Goyal 478375cedc Staging:iio:Remove exceptional & on function name
In this file,function names are otherwise used as pointers without &.
Found using coccinelle.
// <smpl>
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-06 18:07:04 +00:00
Lars-Peter Clausen c89e2e2a0d staging:iio:ad7606: Consolidate channel specs
By slightly reordering the channels in the channel spec array we can reuse
the same array for all variant of the chip.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-06 11:23:19 +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
Greg Kroah-Hartman 5982557ac6 Second set of IIO fixes for the 4.5 cycle. These ones are mostly
dependent on patches from the recent merge cycle.
 
 * adc, imu and iio staging drivers
   - !HAS_IOMEM dependency fixes
 * dht11
   - use boottime clock for time measurement to avoid incorrect measurements
    due to clock updates.
 * lidar
   - correct a return value for short i2c transfers.
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Merge tag 'iio-fixes-for-4.5b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Second set of IIO fixes for the 4.5 cycle.  These ones are mostly
dependent on patches from the recent merge cycle.

* adc, imu and iio staging drivers
  - !HAS_IOMEM dependency fixes
* dht11
  - use boottime clock for time measurement to avoid incorrect measurements
   due to clock updates.
* lidar
  - correct a return value for short i2c transfers.
2016-02-01 13:08:26 -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
Shraddha Barke 255ec44451 Staging: iio: Documentation: Remove unused sysfs attributes
This patch removes the unused sysfs attributes range, range_available,
adc_resolution and adc_resolution_available.

Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:27:11 +00:00
Arnd Bergmann 7e1da86339 iio: ade7753: avoid uninitialized data
The ade7753_spi_read_reg_16() will either successfully read a value
from SPI, or return a failure code without delivering data. However,
the ade7753_stop_device() and ade7753_reset() functions use the returned
data without checking for an error condition first. Gcc detects this
as a possible bug and warns about it:

drivers/staging/iio/meter/ade7753.c: In function 'ade7753_remove':
drivers/staging/iio/meter/ade7753.c:348:6: error: 'val' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  val |= BIT(4);  /* AD converters can be turned off */
      ^
drivers/staging/iio/meter/ade7753.c:345:6: note: 'val' was declared here
  u16 val;
      ^
drivers/staging/iio/meter/ade7753.c: In function 'ade7753_probe':
drivers/staging/iio/meter/ade7753.c:222:6: error: 'val' may be used uninitialized in this function [-Werror=maybe-uninitialized]

In both cases, we can avoids the warning by checking the return code
before using the data.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 16:24:24 +00:00
Richard Weinberger e884cebf9e staging: iio: Fix dependencies for !HAS_IOMEM archs
Not every arch has io memory.
So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-30 15:47:51 +00:00
Colin Ian King b6acb0cfc2 Staging: iio: adc: fix indent on break statement
Fix indent warning when building with gcc 6:
drivers/staging/iio/adc/ad7192.c:239:4: warning: statement is indented
  as if it were guarded by... [-Wmisleading-indentation]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-01-24 14:48:34 +00:00