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path: root/drivers/iio
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2025-10-19iio: accel: bma220: add i2c watchdog featurePetre Rodan1-0/+14
Sometimes the sensor gets stuck and enters a condition in which it pulls SDA low, thus making the entire i2c bus unusable. This problem is mitigated by activating a 1ms watchdog implemented in the sensor. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: add i2c modulePetre Rodan5-2/+87
Add the bma220_i2c module. Note that this kernel module transparently shifts all register addresses 1 bit to the left, so all functions will operate based on the SPI memory map. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: use find_match_table fctPetre Rodan1-7/+16
Clean up the code a bit by using a find_match_table function. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: populate buffer ts in trigger handlerPetre Rodan1-3/+2
Populate buffer timestamps in trigger handler since not all triggers can run the top half handler that provides pf->timestamp. Fixes failing unit test that triggers based on the INT signal. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: migrate to regmap APIPetre Rodan4-77/+172
Switch to regmap API. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: reset registers during init stagePetre Rodan1-8/+36
Bring all configuration registers to default values during device probe(). Remove trivial code duplication regarding bma220_power() in _init() Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: turn power supplies onPetre Rodan1-0/+7
Add devm_regulator_bulk_get_enable() to device probe(). Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: add open firmware tablePetre Rodan1-0/+7
Add open firmware entry to the spi driver. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: split original driverPetre Rodan5-304/+356
In preparation for the i2c module, move the original code into multiple source files without any other functional change. Create the additional bma220_core module which currently is not providing an abstracted bus type (this will change with the regmap patch). Fix a few includes in the context of this patch. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: cleanup includesPetre Rodan1-1/+3
Tweak includes based on requirements. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #added linux/errno.h
2025-10-19iio: accel: bma220: move bma220_power functionPetre Rodan1-24/+25
Move bma220_power() before bma220_init() as a precursor to a patch that removes code duplication. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: shorten spi->dev callsPetre Rodan1-5/+6
Provide functions easier access to device struct. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: cleanup license stringPetre Rodan1-1/+1
Fix checkpatch warning about use of "GPL v2" license: Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity") Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: relax constraints during probe()Petre Rodan1-1/+6
Do not return error if the chip id being read is not the expected one. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: accel: bma220: remove incorrect kernel-doc markingPetre Rodan1-1/+1
Remove incorrect use of kernel-doc marking. Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: add RZ/T2H / RZ/N2H ADC driverCosmin Tanislav3-0/+316
Add support for the A/D 12-Bit successive approximation converters found in the Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs. RZ/T2H has two ADCs with 4 channels and one with 6. RZ/N2H has two ADCs with 4 channels and one with 15. Conversions can be performed in single or continuous mode. Result of the conversion is stored in a 16-bit data register corresponding to each channel. The conversions can be started by a software trigger, a synchronous trigger (from MTU or from ELC) or an asynchronous external trigger (from ADTRGn# pin). Only single mode with software trigger is supported for now. Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: dac: ltc2688: use the auto lock APINuno Sá1-16/+12
Make use of the cleanup API so that we can simplify some code paths. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: resolver: ad2s1210: replace sprintf() with sysfs_emit()Nuno Sá1-15/+15
Update the ad2s1210_read_label() and ad2s1210_read_event_label() functions to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: position: hid-sensor-custom-intel-hinge: replace sprintf() with ↵Nuno Sá1-1/+1
sysfs_emit() Update the hinge_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: qcom-spmi-rradc: replace snprintf() with sysfs_emit()Nuno Sá1-1/+1
Update the rradc_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: pac1921: replace sprintf() with sysfs_emit()Nuno Sá1-4/+4
Update the pac1921_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: mt6360-adc: replace snprintf() with sysfs_emit()Nuno Sá1-1/+1
Update the mt6360_adc_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: meson_saradc: replace sprintf() with sysfs_emit()Nuno Sá1-3/+3
Update the read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: mcp3564: replace sprintf() with sysfs_emit()Nuno Sá1-1/+1
Update the mcp3564_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Reviewed-by: Marius Cristea <marius.cristea@microchip.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: ad7768-1: replace sprintf() with sysfs_emit()Nuno Sá1-1/+1
Update the ad7768_read_label() function to use sysfs_emit(() for generating labels. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: ad4030: replace sprintf() with sysfs_emit()Nuno Sá1-2/+2
Update the ad4030_read_label() function to use sysfs_emit() for generating labels. Signed-off-by: Nuno Sá <nuno.sal@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: light: ltr390: Fix typo in variable nameSameeksha Sankpal1-4/+4
Corrected a spelling mistake in the ltr390 driver: 'recieve_buffer' was renamed to 'receive_buffer'. This improves code readibility without changing functionality. Signed-off-by: Sameeksha Sankpal <sameekshasankpal@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: mpl3115: add support for sampling frequencyAntoni Pokusinski1-0/+82
When the device is in ACTIVE mode the temperature and pressure measurements are collected with a frequency determined by the ST[3:0] bits of CTRL_REG2 register. Reviewed-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: mpl3115: add support for DRDY interruptAntoni Pokusinski1-8/+175
MPL3115 sensor features a "data ready" interrupt which indicates the presence of new measurements. Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: mpl3115: rename CTRL_REG1 field macrosAntoni Pokusinski1-9/+9
Rename the bitfield macros of CTRL_REG1, so that their names clearly indicate their relation to CTRL_REG1. This is a preparation for introducing the support for the DRDY interrupt which requires the usage of other control registers. Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: mpl3115: add separate function for triggered buffer data collectionAntoni Pokusinski1-24/+30
Factor out the code responsible for collecting data for the triggered buffer from the trigger handler into a separate function. Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: ad7124: change setup reg allocation strategyDavid Lechner1-133/+100
Change the allocation strategy of the 8 SETUP registers from a least- recently-used (LRU) to a first-come-first-served basis. The AD7124 chips can have up to 16 channels enabled at a time in the sequencer for buffered reads, but only have 8 SETUP configurations (namely the OFFSET, GAIN, CONFIG and FILTER registers) that must be shared among the 16 channels. This means some of the channels must use the exact same configuration parameters so that they can share a single SETUP group of registers. The previous LRU strategy did not keep track of how many different configurations were requested at the same time, so if there were more than 8 different configurations requested, some channels would end up using the incorrect configuration because the slot assigned to them would also be assigned to a different configuration that wrote over it later. Adding such tracking to solve this would make an already complex algorithm even more complex. Instead we can replace it with a simpler first-come-first-serve strategy. This makes it easy to track how many different configurations are being requested at the same time. This comes at the expense of slightly longer setup times for buffered reads since all setup registers must be written each time when a buffered read is enabled. But this is generally not considered a hot path where performance is critical, so should be acceptable. This new strategy also makes hardware debugging easier since SETUPs are now assigned in a deterministic manner and in a logical order. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: adc: ad7124: add ext attributes to temperature channelDavid Lechner1-0/+1
Use the same .ext_info for the temperature channel as for the voltage channels. In the ADC, these all go though a mux to select the source and otherwise operate the same. These attributes probably won't be used much, but since it is trivial to add this, we might as well include them. Signed-off-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: dac: ltc2688: make use of devm_mutex_init()Nuno Sá1-1/+3
Use devm_mutex_init() since it brings some benefits when CONFIG_DEBUG_MUTEXES is enabled. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: imu: bmi270: add support for motion eventsGustavo Silva1-21/+362
Any-motion event can be enabled on a per-axis basis and triggers a combined event when motion is detected on any axis. No-motion event is triggered if the rate of change on all axes falls below a specified threshold for a configurable duration. A fake channel is used to report this event. Threshold and duration can be configured from userspace. Signed-off-by: Gustavo Silva <gustavograzs@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: humditiy: hdc3020: fix units for thresholds and hysteresisDimitri Fedrau1-28/+41
According to the ABI the units after application of scale and offset are milli degree celsius for temperature thresholds and milli percent for relative humidity thresholds. Currently the resulting units are degree celsius for temperature thresholds and hysteresis and percent for relative humidity thresholds and hysteresis. Change scale factor to fix this issue. Fixes: 3ad0e7e5f0cb ("iio: humidity: hdc3020: add threshold events support") Reported-by: Chris Lesiak <chris.lesiak@licorbio.com> Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: humditiy: hdc3020: fix units for temperature and humidity measurementDimitri Fedrau1-2/+2
According to the ABI the units after application of scale and offset are milli degrees for temperature measurements and milli percent for relative humidity measurements. Currently the resulting units are degree celsius for temperature measurements and percent for relative humidity measurements. Change scale factor to fix this issue. Fixes: c9180b8e39be ("iio: humidity: Add driver for ti HDC302x humidity sensors") Reported-by: Chris Lesiak <chris.lesiak@licorbio.com> Suggested-by: Chris Lesiak <chris.lesiak@licorbio.com> Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19iio: imu: st_lsm6dsx: fix array size for st_lsm6dsx_settings fieldsFrancesco Lavra1-11/+11
The `decimator` and `batch` fields of struct st_lsm6dsx_settings are arrays indexed by sensor type, not by sensor hardware identifier; moreover, the `batch` field is only used for the accelerometer and gyroscope. Change the array size for `decimator` from ST_LSM6DSX_MAX_ID to ST_LSM6DSX_ID_MAX, and change the array size for `batch` from ST_LSM6DSX_MAX_ID to 2; move the enum st_lsm6dsx_sensor_id definition so that the ST_LSM6DSX_ID_MAX value is usable within the struct st_lsm6dsx_settings definition. Fixes: 801a6e0af0c6c ("iio: imu: st_lsm6dsx: add support to LSM6DSO") Signed-off-by: Francesco Lavra <flavra@baylibre.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-18iio: accel: fix ADXL355 startup race conditionValek Andrej1-5/+39
There is an race-condition where device is not full working after SW reset. Therefore it's necessary to wait some time after reset and verify shadow registers values by reading and comparing the values before/after reset. This mechanism is described in datasheet at least from revision D. Fixes: 12ed27863ea3 ("iio: accel: Add driver support for ADXL355") Signed-off-by: Valek Andrej <andrej.v@skyrain.eu> Signed-off-by: Kessler Markus <markus.kessler@hilti.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: ad7124: fix temperature channelDavid Lechner1-4/+8
Fix temperature channel not working due to gain and offset not being initialized. For channels other than the voltage ones calibration is skipped (which is OK). However that results in the calibration register values tracked in st->channels[i].cfg all being zero. These zeros are later written to hardware before a measurement is made which caused the raw temperature readings to be always 8388608 (0x800000). To fix it, we just make sure the gain and offset values are set to the default values and still return early without doing an internal calibration. While here, add a comment explaining why we don't bother calibrating the temperature channel. Fixes: 47036a03a303 ("iio: adc: ad7124: Implement internal calibration at probe time") Reviewed-by: Marcelo Schmitt <marcelo.schmitt@analog.com> Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio:common:ssp_sensors: Fix an error handling path ssp_probe()Christophe JAILLET1-1/+3
If an error occurs after a successful mfd_add_devices() call, it should be undone by a corresponding mfd_remove_devices() call, as already done in the remove function. Fixes: 50dd64d57eee ("iio: common: ssp_sensors: Add sensorhub driver") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: ad7280a: fix ad7280_store_balance_timer()David Lechner1-1/+1
Use correct argument to iio_str_to_fixpoint() to parse 3 decimal places. iio_str_to_fixpoint() has a bit of an unintuitive API where the fract_mult parameter is the multiplier of the first decimal place as if it was already an integer. So to get 3 decimal places, fract_mult must be 100 rather than 1000. Fixes: 96ccdbc07a74 ("staging:iio:adc:ad7280a: Standardize extended ABI naming") Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: buffer-dmaengine: enable .get_dma_dev()Nuno Sá1-0/+2
Wire up the .get_dma_dev() callback to use the DMA buffer infrastructure's implementation. This ensures that DMABUF operations use the correct DMA device for mapping, which is essential for proper operation on systems where memory is mapped above the 32-bit range. Without this callback, the core would fall back to using the IIO device's parent, which may not have the appropriate DMA mask configuration for high memory access. Fixes: 7a86d469983a ("iio: buffer-dmaengine: Support new DMABUF based userspace API") Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Nuno Sá <nuno.sa@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: buffer-dma: support getting the DMA channelNuno Sá1-0/+6
Implement the .get_dma_dev() callback for DMA buffers by returning the device that owns the DMA channel. This allows the core DMABUF infrastructure to properly map DMA buffers using the correct device, avoiding the need for bounce buffers on systems where memory is mapped above the 32-bit range. The function returns the DMA queue's device, which is the actual device responsible for DMA operations in buffer-dma implementations. Cc: stable@vger.kernel.org Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: buffer: support getting dma channel from the bufferNuno Sá1-5/+16
Add a new buffer accessor .get_dma_dev() in order to get the struct device responsible for actually providing the dma channel. We cannot assume that we can use the parent of the IIO device for mapping the DMA buffer. This becomes important on systems (like the Xilinx/AMD zynqMP Ultrascale) where memory (or part of it) is mapped above the 32 bit range. On such systems and given that a device by default has a dma mask of 32 bits we would then need to rely on bounce buffers (to swiotlb) for mapping memory above the dma mask limit. In the process, add an iio_buffer_get_dma_dev() helper function to get the proper DMA device. Cc: stable@vger.kernel.org Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Nuno Sá <nuno.sa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: pressure: bmp280: correct meas_time_us calculationAchim Gratz1-6/+9
Correction of meas_time_us initialization based on an observation and partial patch by David Lechner. The constant part of the measurement time (as described in the datasheet and implemented in the BM(P/E)2 Sensor API) was apparently forgotten (it was already correctly applied for the BMP380) and is now used. There was also another thinko in bmp280_wait_conv: data->oversampling_humid can actually have a value of 0 (for an oversampling_ratio of 1), so it can not be used to detect the presence of the humidity measurement capability. Use data->chip_info->oversampling_humid_avail instead, which is NULL for chips that cannot measure humidity and therefore must skip that part of the calculation. Closes: https://lore.kernel.org/linux-iio/875xgfg0wz.fsf@Gerda.invalid/ Fixes: 26ccfaa9ddaa ("iio: pressure: bmp280: Use sleep and forced mode for oneshot captures") Suggested-by: David Lechner <dlechner@baylibre.com> Tested-by: Achim Gratz <Achim.Gratz@Stromeko.DE> Signed-off-by: Achim Gratz <Achim.Gratz@Stromeko.DE> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: stm32-dfsdm: fix st,adc-alt-channel property handlingOlivier Moysan1-3/+2
Initially st,adc-alt-channel property was defined as an enum in the DFSDM binding. The DFSDM binding has been changed to use the new IIO backend framework, along with the adoption of IIO generic channels. In this new binding st,adc-alt-channel is defined as a boolean property, but it is still handled has an enum in DFSDM driver. Fix st,adc-alt-channel property handling in DFSDM driver. Fixes: 3208fa0cd919 ("iio: adc: stm32-dfsdm: adopt generic channels bindings") Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: ad7380: fix SPI offload trigger rateDavid Lechner1-0/+8
Add a special case to double the SPI offload trigger rate when all channels of a single-ended chip are enabled in a buffered read. The single-ended chips in the AD738x family can only do simultaneous sampling of half their channels and have a multiplexer to allow reading the other half. To comply with the IIO definition of sampling_frequency, we need to trigger twice as often when the sequencer is enabled to so that both banks can be read in a single sample period. Fixes: bbeaec81a03e ("iio: ad7380: add support for SPI offload") Signed-off-by: David Lechner <dlechner@baylibre.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: rtq6056: Correct the sign bit indexChiYuan Huang1-1/+1
The vshunt/current reported register is a signed 16bit integer. The sign bit index should be '15', not '16'. Fixes: 4396f45d211b ("iio: adc: Add rtq6056 support") Reported-by: Andy Hsu <andy_ya_hsu@wiwynn.com> Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-13iio: adc: ad4030: Fix _scale value for common-mode channelsMarcelo Schmitt1-1/+1
Previously, the driver always used the amount of precision bits of differential input channels to provide the scale to mV. Though, differential and common-mode voltage channels have different amount of precision bits and the correct number of precision bits must be considered to get to a proper mV scale factor for each one. Use channel specific number of precision bits to provide the correct scale value for each channel. Fixes: de67f28abe58 ("iio: adc: ad4030: check scan_type for error") Fixes: 949abd1ca5a4 ("iio: adc: ad4030: add averaging support") Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
generated by cgit v1.2.3 (git 2.39.0) at 2026-05-14 18:02:23 +0300