While more verbose error messages are useful for debugging we should really
not put those error messages into the kernel log for normal errors that are
already reported to the application via the error code, when running in
non-debug mode.

Otherwise application authors might expect that this is part of the ABI and
to get the error they should scan the kernel log. Which would be rather
error prone itself since there is no direct mapping between a operation and
the error message so it is impossible to find out which error message
belongs to which error.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

m62332 is a simple 2-channel DAC used on several Sharp Zaurus boards to
control LCD voltage, backlight and sound. The driver use regulators to
control the reference voltage and enabling/disabling the DAC.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Added support to calculate lux value from visible
and IR spectrum adc count values. Also added IIO_LIGHT
channel to enable user read the lux value directly
from device using illuminance input ABI.
Signed-off-by: NKuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Currently, proximity sensor boundary check is done
inside the switch block but outside the case
statement.Since this code will never get executed,
moved the check outside the switch case statement.

   867          case IIO_PROXIMITY:
   868                  switch (dir) {
   // Following line has been moved outside the switch block.
   869                  if (val > LTR501_PS_THRESH_MASK)
   870                          return -EINVAL;
   871                  case IIO_EV_DIR_RISING:
Signed-off-by: NKuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This is mostly part of an effort to clean out our current warnings
and make the autobuilder build reports more useful.

Still a worthwhile if trivial cleanup!
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Cc: Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>

Add optional DT properties to set open delay, sample delay and number
of averages per sample for each adc step. Open delay, sample delay
and averaging are some of the parameters that affect the sampling rate
and accuracy of the sample. Making these parameters configurable via
DT will help in balancing speed vs accuracy.
Signed-off-by: NVignesh R <vigneshr@ti.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This driver adds the initial support for the ACPI Ambient Light Sensor
as defined in Section 9.2 of the ACPI specification (Revision 5.0) [1].

Sensors complying with the standard are exposed as ACPI devices with
ACPI0008 as hardware ID and provide standard methods by which the OS
can query properties of the ambient light environment the system is
currently operating in.

This driver currently allows only to get the current ambient light
illuminance reading through the _ALI method, but is ready to be
extended extended to handle _ALC, _ALT and _ALP as well.

[1] http://www.acpi.info/DOWNLOADS/ACPIspec50.pdfSigned-off-by: NMartin Liska <marxin.liska@gmail.com>
Signed-off-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NGabriele Mazzotta <gabriele.mzt@gmail.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NVarka Bhadram <varkab@cdac.in>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add support for ROHM BH1710/BH1715/BH1721/BH1750/BH1751 ambient light
sensors.
Signed-off-by: NTomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

When cross-compiling the IIO tools we need to opportunity to
specify a cross compiler prefix and some extra CFLAGS. This
patch enables this in the same way as for other stuff in
tools.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NDaniel Baluta <daniel.baluta@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

We assume that ACPI device tables use MMC35240 to
identify MEMSIC's 3 axis magnetic sensor.
Signed-off-by: NDaniel Baluta <daniel.baluta@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

We rely on regmap to save the state of the registers at suspend,
and then we do an explicit sync at resume.
Signed-off-by: NDaniel Baluta <daniel.baluta@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Minimal implementation for MMC35240 3-axis magnetometer
sensor. It provides processed readings and possiblity to change
the sampling frequency.
Signed-off-by: NDaniel Baluta <daniel.baluta@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Export the oversampling ratio so that the user can change the
number of repetions for x/y/z axis.

The sampling frequency is limited by the oversampling ratio.
The available sampling frequencies might change depending
on the values of oversampling_ratio.

The specification can be downloaded from:
http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Some magnetometers can perform a number of repetitions in HW
for each measurement to increase accuracy. One example is
Bosch BMC150:
http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf.

Introduce an interface to set the oversampling ratio
for these devices.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add binding documentation for Bosch BMC150 magnetometer.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add support for the Bosh BMC150 Magnetometer.
The specification can be downloaded from:
http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf.
The chip contains both an accelerometer and a magnetometer.
This patch adds support only for the magnetometer part.

The temperature compensation formulas are based on bmm050_api.c
authored by contact@bosch.sensortec.com.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Added interrupt support for proximity threshold events
to the stk3310 driver.
Signed-off-by: NTiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Minimal implementation of an IIO driver for the Sensortek
STK3310 ambient light and proximity sensor. The STK3311
model is also supported.

Includes:
- ACPI support;
- read_raw and write_raw;
- reading and setting configuration parameters for gain/scale
  and integration time for both ALS and PS.
- power management
Signed-off-by: NTiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Merge tag 'iio-for-v4.2a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, functionality and cleanups for the 4.2 cycle

New drivers / device support
* st sensors driver, lsm303dlh magnetometer support.
* ltr501 - support ltr301 and ltr559 chips.

New functionality
* IIO_CHAN_INFO_CALIBEMISSIVITY for thermopile sensors.
* kxcjk1013 - make driver operational with external trigger.
* Add iio targets to the tools Makefile.

Cleanups
* st sensors - more helpful error message if device id wrong or irq request
  fails, explicitly make the Block Data Update optional rather
  than relying on writes to address 0 not doing anything, make interrupt
  support optional (Not always wired, and not all devices actually have
  an interrupt line.)
* kxcjk-1013 white space additions for readability, add the KXCJ9000 ACPI
  id as seen in the wild.
* sx9500 - GPIO reset support, refactor the GPIO interrupt code, add power
  management, optimize power usage by powering down when possible, rename
  the gpio interrupt pin to be more useful, trivial return path simplification,
  trivial formatting fixes.
* isl29018 -  move towards ABI compliance with a view to moving this driver
  out of staging, add some brackets to ensure code works as expected.  Note
  there is no actual bug as the condition being tested is always true
  (with current devices).
* ltr501 - add regmap support to get caching etc for later patches,
  fix a parameter sanity check that always fails (bug introduced
  earlier in this series), ACPI enumeration support,
  interrupt rate control support, interrupt support in general and
  integration time control support, code alignment cleanups.
* mma9553 - a number of little cleanups following a review from Hartmut
  after I'd already applied the original driver patch.
* tmp006 - prefix some defines with TMP006 for consistency.
* tsl4531 - cleanup some wrong prefixes, presumably from copy and paste.
* mlx90614 - check for errors in read values, add power management,
  add emissivity setting, add device tree binding documentation,
  fix a duplicate const warning.
* ti_am335x_adc - refactor the DT parsing into a separate function.

Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NBenjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NBenjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NBenjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>