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>

Fixes the following warnings from sparse:
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Some SPI controllers may not be able to handle transfer buffers that are placed
on the stack.
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/dac/ad5791.c:114:18: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5791.c:114:18:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5791.c:114:18:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5791.c:142:21: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5791.c:142:21:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5791.c:142:21:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5791.c:144:21: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5791.c:144:21:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5791.c:144:21:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32
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/dac/ad5755.c:117:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5755.c:117:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5755.c:117:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5755.c:171:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5755.c:171:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5755.c:171:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5755.c:172:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5755.c:172:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5755.c:172:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32
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/dac/ad5686.c:100:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5686.c:100:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5686.c:100:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5686.c:122:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5686.c:122:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5686.c:122:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5686.c:124:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5686.c:124:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5686.c:124:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
	drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32
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/dac/ad5421.c:134:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5421.c:134:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5421.c:134:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5421.c:168:25: warning: incorrect type in assignment (different base types)
	drivers/iio/dac/ad5421.c:168:25:    expected unsigned int [unsigned] [usertype] d32
	drivers/iio/dac/ad5421.c:168:25:    got restricted __be32 [usertype] <noident>
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
	drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Some SPI controllers may not be able to handle transfer buffers that are placed
on the stack.
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/dac/ad5504.c:71:19: warning: incorrect type in initializer (different base types)
	drivers/iio/dac/ad5504.c:71:19:    expected unsigned short [unsigned] [usertype] tmp
	drivers/iio/dac/ad5504.c:71:19:    got restricted __be16 [usertype] <noident>
	drivers/iio/dac/ad5504.c:80:19: warning: incorrect type in initializer (different base types)
	drivers/iio/dac/ad5504.c:80:19:    expected unsigned short [unsigned] [usertype] tmp
	drivers/iio/dac/ad5504.c:80:19:    got restricted __be16 [usertype] <noident>
	drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16
	drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16
	drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16
	drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add Device Tree support for the TSL2563 driver,
document the binding and add AMS-TAOS Inc. to the
list of vendor prefixes.
Signed-off-by: NSebastian Reichel <sre@debian.org>
Acked-by: NKumar Gala <galak@codeaurora.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

I2C-controlled MEMS sensor with 20-bit pressure measurement (pascal) and
12-bit temperature measurement

driver only exposes basic functionality, see TODO remarks
datasheet: http://cache.freescale.com/files/sensors/doc/data_sheet/MPL3115A2.pdf

v2:
* store 20-bit value in 32-bit buffer element (instead of 24-bit)
* zero buffer to prevent kernel data leak to userspace
* fix mutex unlock in trigger handler (thanks Andi Shyti)
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: NAndi Shyti <andi@etezian.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

same check is performed a new lines above
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

devm_iio_device_register simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Documentation related to function should be placed above
its implementation. Move it accordingly.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device managed devm_iio_device_{register,unregister}()
to automatically unregister IIO drivers thus leading to
simplified IIO driver code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: NLars-Peter Clausen <lars@metafoo.de>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This will leave a lock held after reading from the device, preventing
any further reads.
Signed-off-by: NFrank Zago <frank@zago.net>
Cc: stable@vger.kernel.org
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch enhances the type safety for the kfifo API.  It is now safe
to put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination
address is pointing to a const variable.

As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element.  This was suggested Russell King.  It
make the handling of the kfifo_put easier since there is no need to
create a helper variable for getting the address of a pointer or to pass
integers of different sizes.

IMHO the API break is okay, since there are currently only six users of
kfifo_put().

The code is also cleaner by kicking out the "if (0)" expressions.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NStefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.

[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

A number of Properties that can be applied to Data Fields are per data
field basis or for all data fields. Adding sensitivity field for all
magnetometer fields, which is most commonly used in currently available
sensor hubs.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

the driver does not support buffering, hence scan_type is not needed
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The driver is missing the iio_buffer_attach() call. As such it will attempt
to free the buffer twice on removal.

Introduced in commit 9e69c9 ("iio: Add reference counting for buffers").
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Reported-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

last argument of IIO_ST is shift, not endianness
Signed-off-by: NPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>