There is one light sensor type defined in the sensor hub specification,
which has one Illuminance field. It doesn't distinguish between ambient
light sensor or color sensor. Currently it is presented as IIO_INTENSITY
channel. There are some user spaces specifically looking for IIO_LIGHT
channel.
To satisfy such user spaces this change also add a duplicate IIO_LIGHT
channel. The units of measurement of Illuminance field is Lux, so it is
still compatible to IIO ABI.
Signed-off-by: NKweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Both devices are using the same iio_chan_spec to define which settings
are exported with sysfs. Both are properly configured to set/get
sampling frequency for pressure and temperature. They also properly
export available sampling frequencies. The only missing thing is
sampling_frequency sysfs file, which allows to set/get this property
from userspace.

Add sampling frequency to iio channel info mask, so sampling_frequency
file is properly exported using sysfs.
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Datasheet of each device (lps331ap, lps25h, lps001wp, lps22hb) says that
the pressure and temperature data is a 2's complement.

I'm sending this the slow way, as negative pressures on these are pretty
unusual and the nature of the fixing of multiple device introduction patches
will make it hard to apply to older kernels - Jonathan.

Fixes: 217494e5 ("iio:pressure: Add STMicroelectronics pressures driver")
Fixes: 2f5effcb ("iio: pressure-core: st: Expand and rename LPS331AP's channel descriptor")
Fixes: 7885a8ce ("iio: pressure: st: Add support for new LPS001WP pressure sensor")
Fixes: e039e2f5 ("iio:st_pressure:initial lps22hb sensor support")
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This adds documentation for Bosch BMI160 Inertial Measurement Unit
device-tree bindings.
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

From now on we can add bmi160 device to device-tree by specifying
compatible string.
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

From now on we can add bmi160 device to device-tree by specifying
compatible string.
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

according to datasheet complete control register is of 2 bytes.
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5933.pdfSigned-off-by: NNizam Haider <nijam.h@hcl.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Several ADC channels are supported in PMIC which can be used to
measure voltage, temperature, current etc. Different scaling can be
applied on the obtained voltage to report in physical units. Scaling
functionality can be different per channel. Add scaling support per
channel. Every channel present in adc has an unique conversion formula
for obtained voltage. Add support to report in Raw as well as in
processed format. Scaling is applied when processed read is requested
and is not applied when a Raw read is requested.
Signed-off-by: NRama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Several channels are supported in ADC of PMIC which can be used to
measure voltage, temperature, current etc., Hardware provides
readings for all channels in adc code. That adc code needs to be
converted to voltage. Logic for conversion of adc code to voltage
is common for all ADC channels(voltage, temperature, current
.,etc). Implement separate function for generic conversion logic.
Signed-off-by: NRama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The alignment of the #defines at the top of the file is not consistent.
This changes all of the defines to use consistent alignment to improve
the code readability.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

isl29028_chip_init() contains the device driver defaults and
two I2C calls that detect the presence of the chip. This patch
moves these into isl29028_probe() so that this function can
be used by the power management runtinme in a followup patch. This
patch also renames isl29028_chip_init() to
isl29028_chip_init_and_power_on().
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

There are two callers to the function isl29028_set_als_ir_mode() and
both instances use a nested if statement to only change the chip state
if it is not in the proper mode. This patch moves this check into the
isl29028_set_als_ir_mode() function to remove the nested if
statements.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

At the end of function ad7150_write_event_config(), directly returns 0.
As a result, the errors will be ignored by the callers. It may be better
to return variable "ret".
Signed-off-by: NPan Bian <bianpan2016@163.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

In function cm3232_reg_init(), it returns 0 even if the last call to
i2c_smbus_write_byte_data() returns a negative value (indicates error).
As a result, the return value may be inconsistent with the execution
status, and the caller of cm3232_reg_init() will not be able to detect
the error. This patch fixes the bug.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188641Signed-off-by: NPan Bian <bianpan2016@163.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch fixes the following checkpatch.pl warning in ad7150.c
WARNING: Symbolic permissions 'S_IRUGO | S_IWUSR' are not preferred
Occured during build.
Signed-off-by: NAmit Kushwaha <kushwaha.a@samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Added timestamp channel. With this change, each sample has a timestamp.
This timestamp can be from the sensor hub when present or local kernel
timestamp. HID sensors can send timestamp with input data using usage id
HID_USAGE_SENSOR_TIME_TIMESTAMP. This timestamp value is converted to
nano seconds before pushing this sample to the iio core.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This adds a new driver for the TI ADS7950 family of ADC chips. These
communicate using SPI and come in 8/10/12-bit and 4/8/12/16 channel
varieties.
Signed-off-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

msleep(1~20) may not do what the caller intends, and will often sleep longer.
(~20 ms actual sleep for any value given in the 1~20ms range)
This is not the desired behaviour for many cases like device resume time,
device suspend time, device enable time, data reading time, etc.
Thus, change msleep to usleep_range for precise wakeups.
Signed-off-by: NAniroop Mathur <a.mathur@samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The copyright year can not be in the future.
Signed-off-by: NReto Schneider <code@reto-schneider.ch>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The module descriptions for the ADIS 16201, 16203 and 16209 drivers do not
match the actual function of the devices. Update them accordingly to fix
this.
Signed-off-by: NReto Schneider <code@reto-schneider.ch>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

smatch warned:
	sval_binop_signed: invalid divide LLONG_MIN/-1

and this fixes it. It's actually good to have, in order to avoid accidental
checking for negative return values here.
Signed-off-by: NMartin Kepplinger <martink@posteo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Support driver probe by reading unique HID on systems based on ACPI instead
of DT compatible strings.
Signed-off-by: NShrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Compatible strings are not available on ACPI based systems. This patch adds
support to use DSDT information read from platform BIOS instead for probing
st pressure sensors.
Signed-off-by: NShrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add support to probe st_accel sensors on i2c bus using ACPI. Compatible
strings are not avaialable on ACPI based systems.
Signed-off-by: NShrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add support to match st sensors using information passed from ACPI DST
tables.
Signed-off-by: NShrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Remove two passthrough macros that are only called from a single
location and make the resultant vmcall directly.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Use the already defined DIAG_SEVERITY values directly instead of special
postcode macro names.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

There were two instances of FAILURE being misspelled in the s-Par
firmware postcode event enum that are fixed.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove guestlinuxdebug enum values that are no longer being used and
renumber remaining values accordingly.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The visorchipset.c functionality was moved into the visorbus driver
previously. This patch updates the s-Par firmware postcode values to
reflect this status.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Call POSTCODE_LINUX directly instead of passing through POSTCODE_LINUX_4.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Call POSTCODE_LINUX directly instead of passing through POSTCODE_LINUX_3.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Call POSTCODE_LINUX directly instead of passing through POSTCODE_LINUX_2.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Use CURRENT_FILE_PC directly in the POSTCODE_LINUX macro instead of
relying on passthrough macros to provide it.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Leverage the 3 existing s-Par postcode macros to do a bit more work
and provide only 1 base postcode macro.
Signed-off-by: NBryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch removes all the unused pound defines currently in
vbuschannel.h.
Signed-off-by: NErik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch removes all the unused pound defines currently in
vmcallinterface.h.
Signed-off-by: NErik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: NDavid Kershner <david.kershner@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The dgnc driver has no business creating "custom" sysfs files just for a
single tty driver.  Combined with the odd way they are created, it's
just a mess, so remove them entirely as I am tired of tripping over them
when doing driver core changes.

Cc: Lidza Louina <lidza.louina@gmail.com>
Cc: Mark Hounschell <markh@compro.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes sm750fb tabstop style warning
found by checkpatch.pl tool
Signed-off-by: NAndrea Ghittino <aghittino@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The scripts to replace NULL test got confused with the
macro parenthesis so the unlikely test in libcfs_private.h
ended up incorrect. This fixes this error.
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>