After some painful sessions with a driver that register an
enable/disable sysfs knob (gp2ap002) and manually going
in and enabling the event before monitoring it:
cd /sys/bus/iio/devices/iio\:device2/events
# ls
in_proximity_thresh_either_en
# echo 1 > in_proximity_thresh_either_en
I realized that it's better if the iio_event_monitor is
smart enough to enable all events by itself and disable them
after use, if passed the -a flag familiar from the
iio_generic_buffer tool.
Auto-enabling events depend on the hardware being able
to handle all events at the same time which isn't
necessarily the case, so a command line option is required
for this.
Cc: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210319135301.542911-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This change makes use of the new IIO buffer API to read data from an IIO
buffer.
It doesn't read the /sys/bus/iio/devices/iio:deviceX/scan_elements dir
anymore, it reads /sys/bus/iio/devices/iio:deviceX/bufferY, where all the
scan_elements have been merged together with the old/classical buffer
attributes.
And it makes use of the new IIO_BUFFER_GET_FD_IOCTL ioctl to get an FD for
the IIO buffer for which to read data from.
It also does a quick sanity check to see that -EBUSY is returned if reading
the chardev after the ioctl() has succeeded.
This was tested with the following cases:
1. Tested buffer0 works with ioctl()
2. Tested that buffer0 can't be opened via /dev/iio:deviceX after ioctl()
This check should be omitted under normal operation; it's being done
here to check that the driver change is sane
3. Moved valid buffer0 to be buffer1, and tested that data comes from it
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-25-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This is a bit of a tidy-up, but also helps with extending the
iioutils_get_type() function a bit, as we don't need to use it outside of
the iio_utils.c file. So, we'll need to update it only in one place.
With this change, the 'unsigned' types are updated to 'unsigned int' in the
iioutils_get_type() function definition.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-23-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Increased trigger length to 64 in order to cope with trigger names
like fc030000.adc-dev0-external-rising
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
If no channels are enabled when we run generic_buffer on a
device, add a command-line option to just enable all of them,
run the sampling and disable them all again afterwards.
This is extremely useful when I'm low-level testing my
sensors with interrupts and triggers, sample session:
root@Ux500:/ lsiio
Device 000: lsm303dlh_accel
Device 001: lis331dl_accel
Device 002: l3g4200d
Device 003: lsm303dlh_magn
Device 004: lps001wp
Trigger 000: lsm303dlh_accel-trigger
Trigger 001: lis331dl_accel-trigger
Trigger 002: l3g4200d-trigger
root@Ux500:/ generic_buffer -a -c 10 -n l3g4200d
iio device number being used is 2
iio trigger number being used is 2
No channels are enabled, enabling all channels
Enabling: in_anglvel_x_en
Enabling: in_anglvel_y_en
Enabling: in_anglvel_z_en
Enabling: in_timestamp_en
/sys/bus/iio/devices/iio:device2 l3g4200d-trigger
-3.593664 -0.713133 4.870143 946684863662292480
3.225546 0.867357 -4.945878 946684863671875000
-0.676413 0.127296 0.106641 946684863681488037
-0.661113 0.110160 0.128826 946684863690673828
-0.664173 0.113067 0.123471 946684863700683593
-0.664938 0.109395 0.124848 946684863710144042
-0.664173 0.110619 0.130203 946684863719512939
-0.666162 0.111231 0.132651 946684863729125976
-0.668610 0.111690 0.130662 946684863738739013
-0.660501 0.110466 0.131733 946684863748565673
Disabling: in_anglvel_x_en
Disabling: in_anglvel_y_en
Disabling: in_anglvel_z_en
Disabling: in_timestamp_en
Pure awesomeness. If some channels have been enabled through
scripts or manual interaction, nothing happens.
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Calculation of the length of an array can be done with the ARRAY_SIZE
macro to make code more abstract and remove the associated
checkpatch.pl warning.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Mark strings, which are not supposed to be changed (basedir, filename,
value), as const in function parameters.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch moves iio userspace applications out of staging, to tools/iio/
and adds a Makefile in order to compile them easily. It also adds tools/iio/
to MAINTAINERS file.
Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-03-09 17:16:08 +00:00
Renamed from drivers/staging/iio/Documentation/iio_utils.h (Browse further)
