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* Merge tag 'iio-for-5.3b' of ↵Greg Kroah-Hartman2019-07-0158-467/+2705
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of IIO device support, features, cleanups and minor fixes for 5.3. A few bits for the counters subsystem mixed in here as well. There are some late breaking fixes as well, which aren't so urgent they can't wait for the merge window. New Device Support * adf4371 - New driver + bindings. - Support the adf4372 PLL. Mostly ID and bindings. * ad8366 (note includes rework of driver needed to allow support for these). - Support the ADL5240 variable gain amplifier (VGA). - Support the ADA4961 digital gain amplifier (DGA). * dps310 - New driver, in several parts from different authors for this temp and pressure sensor. - Includes errata workaround for a temperature reading issue. * stk3310 - Support the stk3335, mostly ID. Features and cleanups * core - drop error handling on debugfs registration. - harden by making sure we don't overrun iio_chan_info_postfix. * docs - convert remaining docs to rst. At somepoint we'll fit these few into the main IIO docs. - improve sampling_frequency_available docs but explaining the range form. * ad_sigma_delta - Drop a pointless goto. * ad2s1210 - Drop pointless platform data null check seeing as we don't actually use platform data anymore. * ad7124 - Relax limitation on channel numbers to allow pseudo different channels. - Support control of whether the input is buffered via DT. - Use dynamic allocation for channel configuration to make it easier to support new devices. - YAML binding conversion. * ad7150 - Comment tidy up. - Consistent and simple if (ret) handling of i2c errors. - FIELD_GET and GENMASK. - Ternary rather than !!(condition) for readability. - Use macros to avoid repetition of channel definitions. * ad7606 - Add software channel config (rather that pin controlled) - Refactor to simplify addition of new part in future. * ad7746 - of_deivce_id table. * ad7780 - MAINTAINERS entry - YAML DT bindings. * ad8366 - Stop using core mlock in favour of well scoped local lock. - SPDX + copyright date update. * ad9834 - of_device_id table * adf4371 - Add support for output stage muting before lock on has occured. * adis library - MAINTAINERS entry to reflect that this now Alexandru's problem ;) * adis162xx: - Fix a slightly incorrect set of comments and print statements on minimum supported voltage. * adis16203 - of_device_id table. * adis16240 - Add of_device_id table (in two parts as first patch only used it for MODULE_DEVICE_TABLE.) * adt7316-spi - of_device_id table * adxl372 - YAML DT binding conversion. - Cleanup use of buffer callback functions (precursor to core rework). * bh1710 - Simplify getting the i2c adapter from the client. * dht11 - Mote to newer GPIO consumer interface. * kxcjk-1013.c - Add binding for sensor in display of some ultrabooks after userspace tools updated for it not be a problem to report two similar sensors. * imx7d - drop unused variables. - white space - define instead of variable for clock frequency that is fixed. - drop pointless error message. * messon_saradc - SPDX * sps30 - MAINTAINERS entry - YAML binding conversion. * st_accel - Tidy up ordering in various buffer related callbacks. This is part of a long running effort to simplify the core code. * stm32-dfsdm: - Manage the resolution cleanly in triggerd modes. - Add fast mode support which allows more flexible filter choices. - Add a comment on the reason for a 16 bit record when technically not 'required'. * st_lsm6dsx - Embed device name in the sensor_settings struct as i3c doesn't have a convenient name field to use for this. * xilinx-adc - Relax constraints on supported platforms to reflect that this can used with FPGAs on PCIe cards and hence many architectures. * counters/ftm-quaddec - Fix some formatting io MODULE_AUTHOR - MAINTAINERS entry Fixes * tools - fix incorrect handling of 32 bit channels. * sca3000 - Potential endian bug that is unlikely to bite anyone (be64 host seems unlikely for this old part). * stm32-adc - Add vdda-supply. On some boards it needs to be turned on to supply the ADC. DT bindings included. * stm32-dfsdm - Fix output resolution to work with filter orders other than 3. - Fix output datatype as it's signed and previously claimed not to be. * tag 'iio-for-5.3b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (68 commits) iio: iio-utils: Fix possible incorrect mask calculation iio: frequency: adf4371: Add support for output stage mute dt-bindings: iio: frequency: Add ADF4372 PLL documentation iio: frequency: adf4371: Add support for ADF4372 PLL dt-bindings: iio: adc: Add buffered input property Convert AD7124 bindings documentation to YAML format. iio: adc: ad7124: Shift to dynamic allocation for channel configuration iio: adc: ad7124: Add buffered input support iio: adc: ad7124: Remove input number limitation MAINTAINERS: add ADIS IMU driver library entry iio: adis162xx: fix low-power docs & reports counter/ftm-quaddec: Add missing '>' in MODULE_AUTHOR iio: core: no need to check return value of debugfs_create functions docs: iio: convert to ReST iio: adc: stm32-adc: add missing vdda-supply dt-bindings: iio: adc: stm32: add missing vdda supply iio: adc: stm32-dfsdm: add comment for 16 bits record iio: adc: stm32-dfsdm: add fast mode support iio: adc: stm32-dfsdm: manage data resolution in trigger mode iio: adc: stm32-dfsdm: fix data type ...
| * iio: iio-utils: Fix possible incorrect mask calculationBastien Nocera2019-06-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some machines, iio-sensor-proxy was returning all 0's for IIO sensor values. It turns out that the bits_used for this sensor is 32, which makes the mask calculation: *mask = (1 << 32) - 1; If the compiler interprets the 1 literals as 32-bit ints, it generates undefined behavior depending on compiler version and optimization level. On my system, it optimizes out the shift, so the mask value becomes *mask = (1) - 1; With a mask value of 0, iio-sensor-proxy will always return 0 for every axis. Avoid incorrect 0 values caused by compiler optimization. See original fix by Brett Dutro <brett.dutro@gmail.com> in iio-sensor-proxy: https://github.com/hadess/iio-sensor-proxy/commit/9615ceac7c134d838660e209726cd86aa2064fd3 Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: frequency: adf4371: Add support for output stage muteStefan Popa2019-06-262-0/+20
| | | | | | | | | | | | | | | | | | | | Another feature of the ADF4371/ADF4372 is that the supply current to the RF8P and RF8N output stage can shut down until the ADF4371 achieves lock as measured by the digital lock detect circuitry. The mute to lock detect bit (MUTE_LD) in REG25 enables this function. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * dt-bindings: iio: frequency: Add ADF4372 PLL documentationStefan Popa2019-06-261-2/+4
| | | | | | | | | | | | | | | | Document support for ADF4372 SPI Wideband Synthesizer. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: frequency: adf4371: Add support for ADF4372 PLLStefan Popa2019-06-262-6/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | The ADF4372 is part of the same family with ADF4371, the main difference is that it has only 3 channels instead of 4, as the frequency quadrupler is missing. As a result, the ADF4372 allows frequencies from 62.5 MHz to 16 GHz to be generated. Datasheet: Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adf4372.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * dt-bindings: iio: adc: Add buffered input propertyMircea Caprioru2019-06-261-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the buffered mode device tree property for positive and negative inputs. Each option can be enabled independently. In buffered mode, the input channel feeds into a high impedance input stage of the buffer amplifier. Therefore, the input can tolerate significant source impedances and is tailored for direct connection to external resistive type sensors such as strain gages or RTDs. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * Convert AD7124 bindings documentation to YAML format.Mircea Caprioru2019-06-262-75/+144
| | | | | | | | | | | | Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adc: ad7124: Shift to dynamic allocation for channel configurationMircea Caprioru2019-06-261-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the channel configuration member of the device structure from a fixed size array to a dynamic allocated one with a size equal to the number of channels specified in the device tree. This will ensure a more flexibility for compatible devices. Ex. ad7124-4 - can have 4 differential or 8 pseudo-differential channels ad7124-8 - can have 8 differential or 16 pseudo-differential channels Also the device can suspport any other combination of differential and pseudo-differential channels base on the physical number of inputs available. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adc: ad7124: Add buffered input supportMircea Caprioru2019-06-261-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the option to enable the buffered mode for positive and negative inputs. Each option can be enabled independently. In buffered mode, the input channel feeds into a high impedance input stage of the buffer amplifier. Therefore, the input can tolerate significant source impedances and is tailored for direct connection to external resistive type sensors such as strain gages or RTDs. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adc: ad7124: Remove input number limitationMircea Caprioru2019-06-261-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | The driver limits the user to use only 4/8 differential inputs, but this device has the option to use pseudo-differential channels. This will increase the number of channels to be equal with the number of inputs so 8 channels for ad7124-4 and 16 for ad7124-8. This patch removes the check between channel nodes and num_inputs value. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * MAINTAINERS: add ADIS IMU driver library entryAlexandru Ardelean2019-06-261-0/+7
| | | | | | | | | | | | | | | | This change adds the ADIS driver library to the MAINTAINERS list, and adds myself as the current maintainer of this library. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adis162xx: fix low-power docs & reportsAlexandru Ardelean2019-06-264-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | All current ADIS162XX drivers have incorrect values defined via comments. Also, when an error is reported the printed value is incorrect. The functionality itself isn't affected, so it's not a critical issue. And since the change is trivial, it was included in a single patch that fixes these in one go. All values were correlated with the ones specified in the data-sheets. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * counter/ftm-quaddec: Add missing '>' in MODULE_AUTHORPatrick Havelange2019-06-221-2/+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>
| * iio: core: no need to check return value of debugfs_create functionsGreg Kroah-Hartman2019-06-221-27/+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>
| * docs: iio: convert to ReSTMauro Carvalho Chehab2019-06-224-25/+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>
| * iio: adc: stm32-adc: add missing vdda-supplyFabrice Gasnier2019-06-221-1/+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>
| * dt-bindings: iio: adc: stm32: add missing vdda supplyFabrice Gasnier2019-06-221-0/+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>
| * iio: adc: stm32-dfsdm: add comment for 16 bits recordOlivier Moysan2019-06-221-0/+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>
| * iio: adc: stm32-dfsdm: add fast mode supportOlivier Moysan2019-06-222-16/+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>
| * iio: adc: stm32-dfsdm: manage data resolution in trigger modeOlivier Moysan2019-06-221-13/+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>
| * iio: adc: stm32-dfsdm: fix data typeOlivier Moysan2019-06-221-2/+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>
| * iio: adc: stm32-dfsdm: fix output resolutionOlivier Moysan2019-06-222-40/+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>
| * MAINTAINERS: add entry for sensirion sps30 driverTomasz Duszynski2019-06-221-0/+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>
| * dt-bindings: iio: chemical: sps30: convert bindings to yamlTomasz Duszynski2019-06-222-12/+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>
| * iio: sca3000: Potential endian bug in sca3000_read_event_value()Dan Carpenter2019-06-221-3/+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>
| * iio: st_accel: fix iio_triggered_buffer_{pre,post}enable positionsAlexandru Ardelean2019-06-221-9/+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>
| * iio: adc: xilinx: support all platformsRobert Hancock2019-06-171-1/+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>
| * iio: humidity: Replace older GPIO APIs with GPIO Consumer APIs for the dht11 ↵Shobhit Kukreti2019-06-171-18/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | sensor 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>
| * MAINTAINERS: add counter/ftm-quaddec driver entryPatrick Havelange2019-06-171-0/+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>
| * staging: iio: ad7150: clean up of commentsMelissa Wen2019-06-171-9/+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>
| * staging: iio: ad7150: simplify i2c SMBus return treatmentMelissa Wen2019-06-171-7/+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>
| * staging: iio: ad7150: use FIELD_GET and GENMASKMelissa Wen2019-06-171-1/+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>
| * staging: iio: ad7150: use ternary operating to ensure 0/1 valueMelissa Wen2019-06-171-2/+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>
| * iio: ad_sigma_delta: return directly in ad_sd_buffer_postenable()Alexandru Ardelean2019-06-171-2/+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>
| * iio: amplifiers: ad8366: Add support for ADL5240 VGAAlexandru Ardelean2019-06-172-0/+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>
| * iio: amplifiers: ad8366: Add support for the ADA4961 DGAPaul Cercueil2019-06-172-5/+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>
| * iio: amplifiers: ad8366: rework driver to allow other chipsAlexandru Ardelean2019-06-171-19/+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>
| * iio: amplifiers: ad8366: use own lock to guard stateAlexandru Ardelean2019-06-171-4/+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>
| * iio: amplifiers: update license informationAlexandru Ardelean2019-06-172-3/+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>
| * dt-bindings: iio: accel: adxl372: switch to YAML bindingsLucas Oshiro2019-06-173-34/+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>
| * iio: adxl372: fix iio_triggered_buffer_{pre,post}enable positionsAlexandru Ardelean2019-06-171-11/+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>
| * dt-bindings: iio: frequency: Add docs for ADF4371 PLLStefan Popa2019-06-171-0/+54
| | | | | | | | | | | | | | | | Document support for Analog Devices ADF4371 SPI Wideband Synthesizer. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: frequency: adf4371: Add support for ADF4371 PLLStefan Popa2019-06-174-0/+649
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ADF4371 is a frequency synthesizer with an integrated voltage controlled oscillator (VCO) for phase-locked loops (PLLs). The ADF4371 has an integrated VCO with a fundamental output frequency ranging from 4000 MHz to 8000 MHz. In addition, the VCO frequency is connected to divide by 1, 2, 4, 8, 16, 32, or 64 circuits that allows the user to generate radio frequency (RF) output frequencies as low as 62.5 MHz at RF8x. A frequency multiplier at RF16x generates from 8 GHz to 16 GHz. A frequency quadrupler generates frequencies from 16 GHz to 32 GHz at RF32x. RFAUX8x duplicates the frequency range of RF8x or permits direct access to the VCO output. The driver takes the reference input frequency from the device tree and uses it to calculate and maximize the PFD frequency (frequency of the phase frequency detector). The PFD frequency is further used to calculate the timeouts: synthesizer lock, VCO band selection, automatic level calibration (ALC) and PLL settling time. This initial driver exposes the attributes for setting the frequency and enabling/disabling the different adf4371 channels. Datasheet: Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adf4371.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: imu: st_lsm6dsx: get device name from st_lsm6dsx_sensor_settingsLorenzo Bianconi2019-06-174-20/+48
| | | | | | | | | | | | | | | | | | Introduce sensor name in st_lsm6dsx_sensor_settings table. This is a preliminary patch to add I3C support to st_lsm6dsx since i3c_device_id data structure does not contain a name field Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: imx7d_adc: Remove unneeded 'average_en' memberFabio Estevam2019-06-171-6/+2
| | | | | | | | | | | | | | | | average_en is always true, so there is not really need for this structure member. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: imx7d_adc: Fit into a single lineFabio Estevam2019-06-171-3/+1
| | | | | | | | | | | | | | | | | | All the parameters of devm_request_irq() can fit into a single line, so place them all in a single line for better readability. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: imx7d_adc: Introduce a definition for the input clockFabio Estevam2019-06-171-3/+2
| | | | | | | | | | | | | | | | | | | | Since the input clock is always 24MHz, there is no need for storing this value into a variable. Use a definition instead, which is more appropriate in this case. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: imx7d_adc: Remove unneeded error messageFabio Estevam2019-06-171-5/+2
| | | | | | | | | | | | | | | | | | In case of ioremap failure, the core code will take care of printing the error message, so there is no need for having a local error message in the driver. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: light: stk3310: Add support for stk3335Martijn Braam2019-06-171-1/+5
| | | | | | | | | | | | | | | | | | The stk3335 light/proximity sensor is similar to the stk3310 and stk3311 sensors and works with the stk3310 driver. Signed-off-by: Martijn Braam <martijn@brixit.nl> Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:core: Fix bug in length of event info_mask and catch unhandled bits set ↵Young Xiao2019-06-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in masks. The incorrect limit for the for_each_set_bit loop was noticed whilst fixing this other case. Note that as we only have 3 possible entries a the moment and the value was set to 4, the bug would not have any effect currently. It will bite fairly soon though, so best fix it now. See commit ef4b4856593f ("iio:core: Fix bug in length of event info_mask and catch unhandled bits set in masks.") for details. Signed-off-by: Young Xiao <92siuyang@gmail.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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