Standard deviation is calculated as the square root of the variance
where variance is the mean of sample_sum and length. Correct the
computation of statP->stddev in accordance to the proper calculation.

Fixes: 3c97c08b ("staging: iio: add TAOS tsl2x7x driver")
Reported-by: Abhiram Balasubramanian <abhiram@cs.utah.edu>
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Environmental humidity sensor is a hid defined sensor,
it shows raw humidity measurement of air.

More information can be found in:
http://www.usb.org/developers/hidpage/HUTRR39b.pdf

According to IIO ABI definition, humidityrelative data output unit is
milli percent. Add the unit convert from percent to milli percent.
Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Scale value include two parts: unit conversion and exponent conversion.
Add gravity unit convert table to fix gravity sensor scale value not
right issue.
Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This patch adds support for STMicro VL6180 - ALS, range and proximity sensor. Sensor is capable of measuring the light
intensity as well as object distance using TOF (Time of Flight) technology.
Signed-off-by: Manivannan Sadhasivam <manivannanece23@gmail.com>
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Remove the extra parenthesis remove the checkpatch issue.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Use resourced managed function devm_iio_triggered_buffer_setup
to make error path simpler and be able to get rid of the remove
function.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This patch adds calibration for the Meson SAR ADC.
Points 25% vref and 75% vref are used for calibration.
It uses a simple linear calibration function: SCALE * val + BIAS

Successfully tested on a Odroid C2.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

adis16203_read_raw does not need lock for IIO_CHAN_INFO_CALIBBIAS
since adis_read_reg_16 is already atomic and nothing else needs to be
protected.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This was reported by checkpatch.pl:
CHECK: Alignment should match open parenthesis
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This was reported by checkpatch.pl:
CHECK: Please use a blank line after function/struct/union/enum
declarations
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This was reported by checkpatch.pl
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The IIO subsystem is redefining iio_dev->mlock to be used by
the IIO core only for protecting device operating mode changes.
ie. Changes between INDIO_DIRECT_MODE, INDIO_BUFFER_* modes.

In this driver, mlock was being used to protect hardware state
changes.  Replace it with a lock in the devices global data.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This patch removes trailing whitespaces in order to follow the Linux
coding style.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Alphabetize and separate kernel and subsystem headers.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This patch replaces bit shifting on 1 with the BIT(x) macro.
This was done with coccinelle:
@@
constant c;
@@

-1 << c
+BIT(c)
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The IIO subsystem is redefining iio_dev->mlock to be used by
the IIO core only for protecting device operating mode changes.
ie. Changes between INDIO_DIRECT_MODE, INDIO_BUFFER_* modes.

In this driver, mlock was being used to protect hardware state changes.

In the driver, buf_lock protects both the adis16060_spi_write() and
adis16060_spi_read() functions and both are always called in
pair. First write, then read. Refactor the code to have
one single function adis16060_spi_write_than_read() protected by
the buf_lock.  This removes the need for additional locking via
mlock, so this locking is removed.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Merge tag 'iio-for-4.12b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

2nd set of new device support, features and cleanups for IIO in the 4.12 cycle

A good collection of outreachy related patches in here - mostly staging
driver cleanup. Also a fair number of patches added explicit OF device ID
tables for i2c drivers - a precursor to dropping (eventually) the implicit
probing.

New Device Support
* Allwinner SoC ADC.
  - So far covers the sun4i-a10, sun5i-a13 and sun6i-a31 general purpose ADCs,
  including thermal side of things.
  This missed the last cycle due to my incompetence, so good to get in now,
  particularly as various patches dependent on it are appearing.
* ltc2632
  - new driver supporting ltc2632-l12, ltc2632-l10, ltc2632-l8, ltc2632-h12,
    ltc-2632-h10, ltc-2632-h8 dacs

Cleanups
* Documentation
  - drop a broken reference to i2c/trivial-devices
* ad2s1200
  - drop & from function pointers for consistency.
* ad2s1210
  - formatting fixes.
* ad7152
  - octal permissions instead of symbolic.
  - drop & from function pointers for consistent usage.
* ad7192
  - drop & from function pointers for consistent usage.
* ad7280
  - replace core mlock usage with a local lock as mlock is intended only to
  protect the current device state (direct reads, or triggered and buffered)
* ad7746
  - drop & from function pointers for consistent usage.
  - replace core mlock usage with a local lock as mlock is intended only to
  protect the current device state (direct reads, or triggered and buffered)
* ad7754
  - move contents of header file into source file as not used anywhere else.
* ad7759
  - move contents of header file into source file as not used anywhere else.
* ad7780
  - drop & from function pointers for consistent usage.
* ad7832
  - replace core mlock usage with a local lock as mlock is intended only to
  protect the current device state (direct reads, or triggered and buffered)
* ad9834
  - replace core mlock usage with a local lock as mlock is intended only to
  protect the current device state (direct reads, or triggered and buffered)
  - drop an unnecessary goto in favour of direct return.
* adis16060
  - drop & from function pointers as inconsistent.
* adis16201
  - drop a local mutex as the adis core already protects everything necessary.
  - drop & from function pointers for consistent usage.
* adis16203
  - drop & from function pointers for consistent usage.
* adis16209
  - drop a local mutex as the adis core already protects everything necessary.
  - use an enum for scan index giving slightly nicer code.
  - drop & from function pointers for consistent usage.
* adis16240
  - drop a local mutex as the adis core already protects everything necessary.
  - use an enum for scan index giving slightly nicer code.
  - drop & from function pointers for consistent usage.
* apds9960
  - add OF device ID table.
* bma180
  - add OF device ID table.
  - prefer unsigned int to bare use of unsigned.
* bmc150_magn
  - add OF device ID table.
* hmp03
  - add OF device ID table.
* ina2xx
  - add OF device ID table.
* itg3200
  - add OF device ID table.
* mag3110
  - add OF device ID table.
* max11100
  - remove .owner field as it is set by the spi core.
* max5821
  - add .of_match_table set to the ID table which was present but not used.
* mcp4725
  - add OF device ID table.
* mlx96014
  - add OF device ID table.
* mma7455
  - add OF device ID table.
* mma7660
  - add OF device ID table.
* mpl3115
  - add OF device ID table.
* mpu6050
  - add OF device ID table.
* pc104
  - mask pc104 drivers behind a global pc104 config option.
* ti-ads1015
  - add OF device ID table.
* tsl2563
  - add OF device ID table.
* us5182d
  - add OF device ID table.

Add support for Linear Technology LTC2632 (SPI) family of·
dual 12- 10-, and 8-bits output DACs.
Signed-off-by: Maxime Roussin-Belanger <maxime.roussinbelanger@gmail.com>
Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Driver uses multiple identifier names for the same task (retval, ret,
rc). It would be easier to read the code if a single task is
identified with a single name. 'ret' is the most common return value
identifier name found in the kernel tree, following the principle of
least surprise using 'ret' is a decent choice.

Rename rc -> ret
Rename retval -> ret
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Comparison, equal to zero, is redundant

'if (foo == 0)'  is equal to  'if (!foo)'

Typical kernel coding style is to use the shorter form.

Remove unnecessary zero comparison.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Comparison, does not equal zero, is redundant

'if (foo != 0)'  is equal to  'if (foo)'

Typical kernel coding style is to use the shorter form.

Remove unnecessary non-zero comparison.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Driver uses different label forms for similar purposes. It would be
more clear if single use case has uniform label. 'out' is generic and
adds no meaning to label.

Documentation/process/coding-style.rst:
Choose label names which say what the goto does or why the goto
exists.

Rename labels so as to better describe what they do. If an execution
path only exists for the label on an error, prefix the label with
'err_'. If a non-error execution path exist do not use prefix.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function uses goto label with no clean up code. In this case we
should just return directly.

Remove goto statement, return directly on error.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits CHECK: multiple assignments should be avoided.

Move multiple line assignment to individual lines.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits CHECK: Unbalanced braces around else
statement. Statements in question are single statements so we do not
need braces. Checkpatch also warns about multiple line dereference for
this code.

Fix if/else/else if statement use of braces. Fix function argument layout
at the same time since it is the same statement.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits CHECK: Alignment should match open parenthesis.

Fix alignment to open parenthesis in line with kernel coding style.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits CHECK: No space is necessary after a cast.

Remove unnecessary space after cast.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

Add blank line after function definition.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Regarding to the header the driver is licensed under BSD and GPL.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Free memory mapping, if vpfe_ipipe_init is not successful.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

New variables are added to make the code more readable.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

"WARNING: Avoid multiple line dereference - prefer 'poid_par_priv->information_buf_len'"
"WARNING: Avoid multiple line dereference - prefer 'padapter->registrypriv.dev_network.Configuration'"
"WARNING: Avoid multiple line dereference - prefer 'Adapter->mppriv.workparam.io_value'"
Signed-off-by: Ding-Chi Wang <dcwang.tw@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Define a pr_fmt() for tracefile.c
Remove redundant prefix 'Lustre' from pr_*() calls.
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert printk() calls into corresponding pr_*() calls.
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The function atomisp_restore_iumit_reg is unused when PM is disabled.
Adding __maybe_unused to the function definition avoids a warning.

The function atomisp_mrfld_power_down is defined only when PM is
enabled. So in atomisp_pci_probe, it should be called only when PM is
enabled.
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The css_pipe_id was checked with 'CSS_PIPE_ID_COPY' in previous if-
statement. In this case, if the css_pipe_id equals to 'CSS_PIPE_ID_COPY',
it could not enter the next if-statement. But the "next" if-statement
has the condition to check whether the css_pipe_id equals to
'CSS_PIPE_ID_COPY' or not. It should be removed.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove braces which are not required to fix the check patch issue. The
following coccinelle script is used to fix this issue.

@@
expression e,e1;
@@
if(e)
-{
 e1;
-}
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove multiple blank lines, which are not required. This patch fixes
the following check patch issue:

CHECK: Please don't use multiple blank lines
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Use kernel preferred block commenting style, to fix the checkpatch
issue.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add spaces around arithmetic operators (/, +, -), to fix the checkpatch
issue.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>