- Jul 24, 2018
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Martin Blumenstingl authored
The SAR ADC on Meson8m2 behaves identical to the one found in the Meson8b SoCs. Add a separate compatible string because the temperature sensor logic (not supported yet) differs between Meson8 and Meson8m2 (however, it's the same for Meson8b and Meson8m2). Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Martin Blumenstingl authored
The Amlogic Meson SAR ADC implementation on the Meson8m2 SoC is identical to the Meson8b variant. Add a compatible string to indicate that we support the SAR ADC on the Meson8m2 SoC. Signed-off-by:
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David Lechner authored
This modifies the TI ADS7950 A/DC driver to allow the simultaneous use of both the triggered buffer and reading channels directly (via in- kernel API or sysfs). The use case for this is on LEGO MINDSTORMS EV3. Two of the voltage channels are used in-kernel by a power supply driver, which reads the values using iio_read_channel_processed(). These channels are only read at a slow rate (<= 1Hz). However, we want to be able to read 12 other channels at the same time using the triggered buffer at a high rate (>= 100Hz). Signed-off-by:
David Lechner <david@lechnology.com> Signed-off-by:
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David Lechner authored
This updates the ti-ads7950.c file to use SPDX-License-Identifier instead of more verbose license text. Signed-off-by:
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Dan Carpenter authored
This code is problematic because we're supposed to be writing an int but we instead write to only the high 16 bits. This doesn't work on big endian systems, and there is a potential that the bottom 16 bits are used without being initialized. Fixes: 23ec2774 ("iio: adc: at91-sama5d2_adc: add support for position and pressure channels") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Tested-by:
Eugen Hristev <eugen.hristev@microchip.com> Acked-by:
Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by:
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Lars-Peter Clausen authored
This is also part of a long term effort to make the use of mlock opaque and single purpose. This lock is required for accessing device registers. The device may be accessed by multiple processes at the same time, and this can result in inconsistent data, where one device reads data before the other one has finished writing. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by:
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Manish Narani authored
This patch removes dead code from xadc_zynq_setup. The condition "if (tck_rate > XADC_ZYNQ_TCK_RATE_MAX)" cannot be true at any point of time. There is also an incompatible parameter used in the code. This patch fixes the same reported by coverity. Signed-off-by:
Manish Narani <manish.narani@xilinx.com> Signed-off-by:
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Fabrice Gasnier authored
Device tree compiler gives a warning if a device node has "@" but no reg property. Fix the example in iio: adc: sigma-delta-modulator. Signed-off-by:
Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by:
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Maxime Roussin-Bélanger authored
e-mail received from Silicon Lab to confirm that the licensing isn't a problem. " Dear Maxime Roussin-Belanger, The LUX calculation code only works with Si1133. As long as the software is used with Silicon Lab's sensor product, I don't see any problem. Regards, Tony " Signed-off-by:
Maxime Roussin-Bélanger <maxime.roussinbelanger@gmail.com> Reviewed-by:
Jean-Francois Dagenais <jeff.dagenais@gmail.com> Signed-off-by:
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Maxime Roussin-Bélanger authored
Signed-off-by:
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Mathieu Othacehe authored
This patch adds support for the ISL29501 Time of Flight sensor. Signed-off-by:
Mathieu Othacehe <m.othacehe@gmail.com> Signed-off-by:
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- Jul 21, 2018
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Mathieu Othacehe authored
Add new channel type support for phase. This channel may be used by Time-of-flight sensors to express the phase difference between emitted and received signals. Those sensor will then use the phase shift of return signals to approximate the distance to objects. Signed-off-by:
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- Jul 15, 2018
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Dominique Martinet authored
Generated by scripts/coccinelle/misc/strncpy_truncation.cocci Signed-off-by:
Dominique Martinet <asmadeus@codewreck.org> Signed-off-by:
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Lars-Peter Clausen authored
The ADXL375 is fully register map compatible to the ADXL345 (including the device ID register returning the same value ...). The only difference is the resolution of the acceleration sensor. The ADXL375 can measure up to +-200g of acceleration. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL375.PDF Signed-off-by:
Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by:
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Lorenzo Bianconi authored
Add debug info to error conditions in st_lsm6dsx_read_fifo routine Suggested-by:
Jorge Ramirez-Ortiz <jramirez@baylibre.com> Signed-off-by:
Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by:
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Brian Masney authored
There are several options in the device tree documentation that are no longer relevant for the current in-kernel bmp280 driver so this patch removes them. Signed-off-by:
Brian Masney <masneyb@onstation.org> Signed-off-by:
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Brian Masney authored
This patch adds support for the MPU 6515 variant. Confirmed that the driver functions correctly on a LG Nexus 5 (hammerhead) phone. Signed-off-by:
Jonathan Marek <jonathan@marek.ca> Signed-off-by:
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Andreas Klinger authored
Device tree compiler (dtc) gives a warning if a device node has "@" with a following number as it's name but no reg property. Fix the example in the documentation of avia,hx711 to conform to dtc behavior. Signed-off-by:
Andreas Klinger <ak@it-klinger.de> Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Andreas Klinger authored
On a system with parasitic capacitance it turned out that DOUT is not ready after 100 ns after PD_SCK has raised. A measurement showed almost 1000 ns until DOUT has reached its correct value. With this patch its now possible to wait until data is ready. The wait time should not be higher than the maximum PD_SCK high time which is corresponding to the datasheet 50000 ns. Signed-off-by:
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Andreas Klinger authored
Add clock-frequency property for hx711 ADC. This is the frequency of PD_SCK. After PD_SCK goes high DOUT is read just before PD_SCK goes down again. This is necessary because of parasitic capacitance on the wiring. Signed-off-by:
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Akinobu Mita authored
The ADXL345 provides selectable output data rate. This adds the iio channel information for the sampling frequency with that feature. Cc: Eva Rachel Retuya <eraretuya@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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- Jul 08, 2018
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Julia Lawall authored
Drop call to of_match_device, which is subsumed by the subsequent call to of_device_get_match_data. The code becomes simpler, and a temporary variable can be dropped. The semantic match that makes this change is as follows: (http://coccinelle.lip6.fr/ ) // <smpl> @r@ local idexpression match; identifier i; expression x, dev, e, e1; @@ - match@i = of_match_device(x, dev); - if (match) e = of_device_get_match_data(dev); - else e = e1; + e = of_device_get_match_data(dev); + if (!e) e = e1; @@ identifier r.i; @@ - const struct of_device_id *i; ... when != i // </smpl> Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Stefan Popa authored
Signed-off-by:
Stefan Popa <stefan.popa@analog.com> Reviewed-by:
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Stefan Popa authored
The AD5758 is a single channel DAC with 16-bit precision which uses the SPI interface that operates at clock rates up to 50MHz. The output can be configured as voltage or current and is available on a single terminal. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ad5758.pdf Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Warning level 2 was used in this case: -Wimplicit-fallthrough=2 Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
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Colin Ian King authored
Pointers chip_info and spi_dev_id are being assigned but are never used hence they are redundant and can be removed. Cleans up clang warning: warning: variable 'chip_info' set but not used [-Wunused-but-set-variable] Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Colin Ian King authored
Variable shift is being assigned but is never used hence it is redundant and can be removed. Cleans up two clang warnings: warning: variable ‘shift’ set but not used [-Wunused-but-set-variable] Signed-off-by:
Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by:
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Nikolaus Voss authored
struct i2c_device_id argument of probe() is not used, so use probe_new() instead. Signed-off-by:
Nikolaus Voss <nikolaus.voss@loewensteinmedical.de> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
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Nikolaus Voss authored
Use device_get_match_data API to simplify access to driver data. Let acpi_device_id table entries point to the same driver data as of_device_id table entries and uniquify access to driver data by using device_get_match_data API. Remove unused i2c_device_id .driver_data fields. Signed-off-by:
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Akinobu Mita authored
When the buffer is enabled for ina2xx driver, a dedicated kthread is invoked to capture mesurement data. When the buffer is disabled, the kthread is stopped. However if the kthread gets register access errors, it immediately exits and when the malfunctional buffer is disabled, the stale task_struct pointer is accessed as there is no kthread to be stopped. A similar issue in the usbip driver is prevented by kthread_get_run and kthread_stop_put helpers by increasing usage count of the task_struct. This change applies the same solution. Cc: Stefan Brüns <stefan.bruens@rwth-aachen.de> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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- Jul 01, 2018
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Freeman Liu authored
The Spreadtrum SC27XX PMICs ADC controller contains 32 channels, which is used to sample voltages with 12 bits conversion. [Baolin Wang did lots of improvements] Signed-off-by:
Freeman Liu <freeman.liu@spreadtrum.com> Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Signed-off-by:
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Baolin Wang authored
This patch adds the binding documentation for Spreadtrum SC27XX series PMICs ADC controller device. Signed-off-by:
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Akinobu Mita authored
The ADXL345 provides the offset adjustment registers for each axis. This adds the iio channel information for the calibraion offsets with that feature. Cc: Eva Rachel Retuya <eraretuya@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Akinobu Mita authored
Currently the address field in iio_chan_spec is filled with an accel data register address for the corresponding axis. In preparation for adding calibration offset support, this sets the address field to the index of accel data registers instead of the actual register address. This change makes it easier to access both accel registers and calibration offset registers with fewer lines of code as these are located in X-axis, Y-axis, Z-axis order. Cc: Eva Rachel Retuya <eraretuya@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Akinobu Mita authored
Add a link to the ADXL345 datasheet Cc: Eva Rachel Retuya <eraretuya@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Karim Eshapa authored
Doing some macro replacement to start an array of structures so it can be reused by manipulating it with different values. Signed-off-by:
Karim Eshapa <karim.eshapa@gmail.com> Signed-off-by:
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- Jun 28, 2018
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Michael Straube authored
Remove unrequired whitespace in some declarations, fix an indentation and remove unrequired blank lines. Signed-off-by:
Michael Straube <straube.linux@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Use the mac_pton() helper to convert the mac address string. The functions key_char2num() and key_2char2num() are not used anywhere else and can be removed. This also has the benefit of validating the input since mac_pton() returns false if the string is not valid. Signed-off-by:
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Michael Straube authored
Use ether_addr_copy() instead of memcpy() to copy the mac address. Suggested-by:
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