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2019-06-22counter/ftm-quaddec: Add missing '>' in MODULE_AUTHORPatrick Havelange1-2/+2
The last '>' chars were missing in the MODULE_AUTHOR entries. Reported-by: Randy Dunlap <rdunlap@infradead.org> Fixes: a3b9a99980d9 ("counter: add FlexTimer Module Quadrature decoder counter driver") Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: core: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-27/+8
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Jonathan Cameron <jic23@kernel.org> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Cc: linux-iio@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22docs: iio: convert to ReSTMauro Carvalho Chehab4-25/+56
Rename the iio documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-adc: add missing vdda-supplyFabrice Gasnier1-1/+20
Add missing vdda-supply, analog power supply, to STM32 ADC. When vdda is an independent supply, it needs to be properly turned on or off to supply the ADC. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Fixes: 1add69880240 ("iio: adc: Add support for STM32 ADC core"). Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22dt-bindings: iio: adc: stm32: add missing vdda supplyFabrice Gasnier1-0/+1
Add missing vdda-supply, analog power supply, to STM32 ADC. It's required to properly supply the ADC. Fixes: 841fcea454fe ("Documentation: dt-bindings: Document STM32 ADC DT bindings") Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-dfsdm: add comment for 16 bits recordOlivier Moysan1-0/+5
Add a comment on DMA configuration for 16 bits record. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-dfsdm: add fast mode supportOlivier Moysan2-16/+53
The use of fast mode allows to get a larger set of solution for filter parameters. This can be useful to reach a better output sample resolution, when fast mode can be used. Fast mode is selected at startup if it is relevant. The startup is performed in postenable callback context, where there are too tight time constraints for filter parameters computation. For this reason both fast and non fast filter parameters are pre-computed previously. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-dfsdm: manage data resolution in trigger modeOlivier Moysan1-13/+28
Add output sample resolution management in scan mode. Add stm32_dfsdm_process_data() function to share sample processing between continuous and trigger modes. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-dfsdm: fix data typeOlivier Moysan1-2/+2
Fix the data type as DFSDM raw output is complements 2, 24bits left aligned in a 32-bit register. This change does not affect AUDIO path - Set data as signed for IIO (as for AUDIO) - Set 8 bit right shift for IIO. The 8 LSBs bits of data contains channel info and are masked. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Fixes: e2e6771c6462 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support") Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: adc: stm32-dfsdm: fix output resolutionOlivier Moysan2-40/+142
In buffered mode, output samples are shifted left unconditionally. This works for filter order 3, but this shift is not adapted for other filter orders. Compute required shift, left or right, and shift output data accordingly. Add also saturation management to avoid wrap-around when maximum positive sample is reached. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Fixes: eca949800d2d ("IIO: ADC: add stm32 DFSDM support for PDM microphone") Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22MAINTAINERS: add entry for sensirion sps30 driverTomasz Duszynski1-0/+6
Add myself as a sensirion sps30 driver maintainer. Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22dt-bindings: iio: chemical: sps30: convert bindings to yamlTomasz Duszynski2-12/+39
Convert existing device tree bindings to yaml. Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: sca3000: Potential endian bug in sca3000_read_event_value()Dan Carpenter1-3/+4
The problem is that "ret" is an int but we're casting it as "(unsigned long *)&ret" when we do the for_each_set_bit() loop. This will not work on big endian 64 bit systems. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-22iio: st_accel: fix iio_triggered_buffer_{pre,post}enable positionsAlexandru Ardelean1-9/+13
The iio_triggered_buffer_{predisable,postenable} functions attach/detach the poll functions. For the predisable hook, the disable code should occur before detaching the poll func, and for the postenable hook, the poll func should be attached before the enable code. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: adc: xilinx: support all platformsRobert Hancock1-1/+0
Since the XADC logic can be used with standalone Xilinx FPGAs, this driver can potentially be used with many different platforms, not just the Zynq and MicroBlaze platforms this driver was allowed to be built for. There should be no platform-specific code in this driver, so just delete the platform dependency. Signed-off-by: Robert Hancock <hancock@sedsystems.ca> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: humidity: Replace older GPIO APIs with GPIO Consumer APIs for the dht11 sensorShobhit Kukreti1-18/+10
The dht11 driver uses a single gpio to make measurements. It was using the older global gpio numberspace. The patch replaces the old gpio api with the new gpio descriptor based api. Removed header files "linux/gpio.h" and "linux/of_gpio.h" Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com> Acked-by: Harald Geyer <harald@ccbib.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17MAINTAINERS: add counter/ftm-quaddec driver entryPatrick Havelange1-0/+8
Adding myself as maintainer for this driver Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17staging: iio: ad7150: clean up of commentsMelissa Wen1-9/+2
General cleaning of comments to remove useless information or improve description. Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17staging: iio: ad7150: simplify i2c SMBus return treatmentMelissa Wen1-7/+2
Since i2c_smbus_write_byte_data returns no-positive value, this commit making the treatment of its return value less verbose. Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17staging: iio: ad7150: use FIELD_GET and GENMASKMelissa Wen1-1/+5
Use the bitfield macro FIELD_GET, and GENMASK to do the shift and mask in one go. This makes the code more readable than explicit masking followed by a shift. Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17staging: iio: ad7150: use ternary operating to ensure 0/1 valueMelissa Wen1-2/+2
Remove idiom and use ternary operator for consistently trigger 0/1 value on variable declaration. Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: ad_sigma_delta: return directly in ad_sd_buffer_postenable()Alexandru Ardelean1-2/+1
There is nothing being done after the `err_predisable` label, so just remove it. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: amplifiers: ad8366: Add support for ADL5240 VGAAlexandru Ardelean2-0/+18
The ADL5240 is a high performance, digitally controlled variable gain amplifier (VGA) operating from 100 MHz to 4000 MHz. The VGA integrates a high performance, 20 dB gain, internally matched amplifier (AMP) with a 6-bit digital step attenuator (DSA) that has a gain control range of 31.5 dB in 0.5 dB steps with ±0.25 dB step accuracy. Datasheet link: https://www.analog.com/media/en/technical-documentation/data-sheets/adl5240.pdf Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: amplifiers: ad8366: Add support for the ADA4961 DGAPaul Cercueil2-5/+39
This change adds support for the ADA4961 BiCMOS RF Digital Gain Amplifier, (DGA), which is optimized for driving heavy loads out 2.0 GHz and beyond. The device typically achieves -90 dBc IMD3 performance at 500 MHz and -85 dBc at 1.5 GHz. Datasheet link: http://www.analog.com/media/en/technical-documentation/data-sheets/ADA4961.pdf This change re-uses the existing ad8366 driver, as most logic is similar. Also, this chip has a reset pin which is initialized during probe. Signed-off-by: Paul Cercueil <paul.cercueil@analog.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: amplifiers: ad8366: rework driver to allow other chipsAlexandru Ardelean1-19/+62
The SPI gain amplifiers are simple devices, with 1 or 2 channels, to which are read-from/written-to. The gain computation in ad8366_write_raw() has been updated to compute gain in dB for negative values. This driver will be extended to support other chips as well. To do that, this rework handles the AD8366 device as a special-case (via switch-statements). This will make things easier when adding new chips. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: amplifiers: ad8366: use own lock to guard stateAlexandru Ardelean1-4/+6
This driver is still using iio_dev's mlock to guard against inconsistent state. This has been discouraged for some time. This change switches to using it's own mutex, defined on the state struct. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: amplifiers: update license informationAlexandru Ardelean2-3/+3
Use the new `SPDX-License-Identifier` tag to specify the license. For ad8366, also update copyright years in the header part. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17dt-bindings: iio: accel: adxl372: switch to YAML bindingsLucas Oshiro3-34/+64
Convert the old device tree documentation to yaml format. Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com> Signed-off-by: Rodrigo Ribeiro <rodrigorsdc@gmail.com> Co-developed-by: Rodrigo Ribeiro <rodrigorsdc@gmail.com> Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br> Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-17iio: adxl372: fix iio_triggered_buffer_{pre,post}enable positionsAlexandru Ardelean1-11/+16
The iio_triggered_buffer_{predisable,postenable} functions attach/detach the poll functions. For the predisable hook, the disable code should occur before detaching the poll func, and for the postenable hook, the poll func should be attached before the enable code. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>