combined ambient light (two channels) and proximity sensor with I2C
interface; the ALS channels are visible+IR and IR

datasheet is here
http://optoelectronics.liteon.com/upload/download/DS86-2012-0006/P_100_LTR-501ALS-01_PrelimDS_ver1.1.pdf

v3:
* fix use of sizeof in _read_als()
v2: (thanks to Lars-Peter Clausen)
* cannot use devm_iio_device_register() due to cleanup order in _remove()
* mutex around data wait/read
* turn info message in _probe() into check for part number
* change copyright year to 2014
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

>> >> drivers/iio/pressure/mpl3115.c:101:46: sparse: cast to restricted __be32
>> >> drivers/iio/pressure/mpl3115.c:115:46: sparse: cast to restricted __be32
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

len variable became obsolete with
iio_push_to_buffers_with_timestamp()
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

len variable become obsolete with
iio_push_to_buffers_with_timestamp()
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Remove "Control of internal reference" from the list of unimplemented
features, since as of commit a405b00e, external reference is supported if
the device has a regulator and falls back to internal if it doesn't.

While we are modifying the header, let's make it more concise and remove
a redundant filename.
Signed-off-by: NVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

sensor provides 12-bit relative humidity and 14-bit temperature
via I2C interface; temperature and linearity compensation is not
implemented (yet)

driver also supports the Si7015, but not the 2nd generation
sensors Si7013/Si7020/Si7021

datasheet is here
http://www.silabs.com/Support%20Documents/TechnicalDocs/Si7005.pdf

v2: (thanks to Lars-Peter Clausen)
* fix coding style
* use devm_iio_device_register()
* change copyright year to 2014
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add Capella Microsystem CM32181 Ambient Light Sensor IIO driver.
This driver will convert raw data to lux value under open-air
condition. Change the calibscale based on the cover material.
Signed-off-by: NKevin Tsai <ktsai@capellamicro.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

'cm36651_of_match' is always compiled in. Hence the
helper macro is not needed.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain so the simplest path with
this driver is to not specify the unused scan type.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain so the simplest path with
this driver is to not specify the unused scan type.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

IIO_ST is going away as it is a pain to maintain.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

The IIO_ST macro no longer covers all the elements of struct scan_type
and has this has lead to some bugs being introduced.

The drivers are easier to follow with this structure being directly
filled so that is now preferred.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

The IIO_ST macro no longer covers all the elements of struct scan_type
and has this has lead to some bugs being introduced.

The drivers are easier to follow with this structure being directly
filled so that is now preferred.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>

Note this also sets the endianness to big endian whereas it would
previously have defaulted to the cpu endian.  Hence technically
this is a bug fix on LE platforms.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>
Cc: stable@vger.kernel.org

A single channel in this driver was using the IIO_ST macro.
This does not provide a parameter for setting the endianness of
the channel.  Thus this channel will have been reported as whatever
is the native endianness of the cpu rather than big endian. This
means it would be incorrect on little endian platforms.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>
Cc: stable@vger.kernel.org

A return value of callback have been changed to IIO_VAL_INT.
If not IIO_VAL_INT, driver will print wrong value(*_read_int_time).

A follow up patch will deal with a related bug in the new event handling
code.
Signed-off-by: NBeomho Seo <beomho.seo@samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Now that all drivers have been converted to the new event config interface we
can remove for the legacy event config interface. Also drop the '_new' suffix
for the event config interface callbacks, since those are the only callbacks
now.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Switch the cm36651 driver to the new IIO event config interface as the old one
is going to be removed.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Cc: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Added usage id processing for Inclinometer 3D. This uses IIO
interfaces for triggered buffer to present data to user
mode.This uses HID sensor framework for registering callback
events from the sensor hub.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This driver handles DHT11 and DHT22 sensors.
Signed-off-by: NHarald Geyer <harald@ccbib.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

There are already humidity sensors in the hwmon subsystem,
so we use their unit (milli percent) here as well.
Signed-off-by: NHarald Geyer <harald@ccbib.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Use new ATTRIBUTE_GROUPS macro to declare attribute groups.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Currently the IIO buffer interface only allows non-blocking reads. This patch
adds support for blocking IO. In blocking mode the thread will go to sleep if no
data is available and will wait for the buffer implementation to signal that new
data is available by waking up the buffers waitqueue.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch implements the data_available() callback for the kfifo buffer instead
of using the stufftoread flag. The kfifo used by the buffer already knows
whether it is empty or not based on the position of its read and write pointer.
Using this makes it a lot easier to tell whether data is available or not and it
is not necessary to take special measures to ensure that no race conditions
between reading and writing from the buffer occur.

Note, that we still have to take the buffers lock to protect against concurrent
resizeing of the kfifo.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch adds a new data_available() callback to the iio_buffer_access_funcs
struct. The callback is used to indicate whether data is available in the buffer
for reading. It is meant to replace the stufftoread flag from the iio_buffer
struct. The reasoning for this is that the buffer implementation usually can
determine whether data is available rather easily based on its state, on the
other hand it can be rather tricky to update the stufftoread flag in a race free
way.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Fixes the following warnings from sparse:
	drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16
	drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16
	drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16
	drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>