This patch changes the semantics of non-blocking reads so that a
hardware fifo flush is triggered if the available data in the device
buffer is less then the requested size.
This allows userspace to accurately generate hardware fifo flushes, by
doing a non-blocking read with a size greater then the sum of the
device buffer and hardware fifo size.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Apply the following coding style changes as indicated by checkpatch.pl in
strict mode:
- Please don't use multiple blank lines
- braces {} should be used on all arms of this statement (if/else)
- Alignment should match open parenthesis
- Please don't use multiple blank lines
- Blank lines aren't necessary after an open brace '{'
- Missing a blank line after declarations
- No space is necessary after a cast
Also wrap/consolidate error messages to fit 80 characters per line and
rework a comment.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
BMC150_ACCEL_SLOPE_THRES_MASK was defined some time ago, but its 'magic'
value got used instead in bmc150_accel_write_event(). Make use of it for
improved readability.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add some empty lines to visually separate logical structure blocks, as
after if-blocks or before regular returns.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In cm3323_read_raw() i is used as return variable for the integration time
index. The also existing return variable ret however is unused in this
case, although appropriate. Replace i with ret and drop it.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
cm3323_get_it_bits() returns a valid error code, so pass it up in
cm3323_read_raw().
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Put chip in 'suspend' mode in case something goes wrong
during probe.
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
some are documented, others are in iio_event_monitor.c which
was recently moved from staging
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Change the prototype for the mma9551_read/write_*_words functions
to receive the length of the buffer in words (instead of bytes) since
we are using a word buffer. This will prevent users from sending an
odd number of bytes for a word array.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There is no need to do the assignment to indio_dev->num_channels in two
lines code.
Put it in one line.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ADC is typically shared with remote CPUs not running Linux.
However, there is only one register to power-up/power-down. Remote CPUs
aren't able to power-up the ADC, and rely in Linux doing it instead.
This commit uses the adc-reserved-channels devicetree property to
distinguish shared usage. In this case, the ADC is powered up at
probe time.
If the ADC is used only by the CPU running Linux, power-up/down
at runtime, only when neeeded.
Signed-off-by: Naidu Tellapati <naidu.tellapati@imgtec.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Added support for setting the STK8BA50 accelerometer's
sampling rate.
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replaced the stk8ba50_scale_table with an identically named
struct in order to make the code a bit more readable.
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Export the available scales for accel and gyro in order
to hint the user-space as to what are the available valid values.
Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Added some more *scale_available attributes to the list that
are used in various drivers but were missiong from Documentation.
Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use more appropriate/common variable names:
* namepf instead of nameFile in iio_utils.c
* ret instead of retval in lsiio.c
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Vlad Dogaru
Octavian Purdila
Hartmut Knaack
Peter Meerwald
Tiberiu Breana
Irina Tirdea
Fabio Estevam
Naidu Tellapati
Adriana Reus