- 03 Aug, 2024 40 commits
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Rayyan Ansari authored
Document the KX022-1020 accelerometer, which has the same register layout as the KX023-1025 and so can use the same driver. Signed-off-by:
Rayyan Ansari <rayyan@ansari.sh> Acked-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20240714173431.54332-2-rayyan@ansari.shSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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David Lechner authored
This makes use of the new devm_regulator_get_enable_read_voltage() helper function to reduce boilerplate code in the MCP3911 ADC driver. The error message is slightly changed since there are fewer error return paths. An extra parameter is added to the config callback to avoid adding state that is not used outside of the probe() function. Signed-off-by:
David Lechner <dlechner@baylibre.com> Reviewed-by:
Marcus Folkesson <marcus.folkesson@gmail.com> Link: https://patch.msgid.link/20240712-iio-regulator-refactor-round-3-v1-6-835017bae43d@baylibre.comSigned-off-by:
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David Lechner authored
By using devm_iio_device_register(), we can drop the remove() callback in the mcp4922 driver. We can also remove spi_set_drvdata() since there are no more callers of spi_get_drvdata(). Also use dev_err_probe() while we are at it. Signed-off-by:
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David Lechner authored
This makes use of the new devm_regulator_get_enable_read_voltage() helper function to reduce boilerplate code in the MCP4922 DAC driver. The error message is slightly different because there is only one error return path now. Signed-off-by:
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David Lechner authored
This makes use of the new devm_regulator_get_enable_read_voltage() helper function to reduce boilerplate code in the MCP4728 DAC driver. Signed-off-by:
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David Lechner authored
To prepare for using a function that returns a non-error value, rename the variable 'err' to 'ret' in the probe function. Signed-off-by:
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Vasileios Amoiridis authored
Sort headers in alphabetical order Signed-off-by:
Vasileios Amoiridis <vassilisamir@gmail.com> Link: https://patch.msgid.link/20240711211558.106327-4-vassilisamir@gmail.comSigned-off-by:
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Vasileios Amoiridis authored
According to the datasheet, both pressure and temperature can go up to oversampling x32. With this option, the maximum measurement time is not 80ms (this is for press x32 and temp x2), but it is 130ms nominal (calculated from table 3.9.2) and since most of the maximum values are around +15%, it is configured to 150ms. Fixes: 8d329309 ("iio: pressure: bmp280: Add support for BMP380 sensor family") Signed-off-by:
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Vasileios Amoiridis authored
Up to now, the BMP280 device is using the regmap of the BME280 which has registers that exist only in the BME280 device. Fixes: 14e8015f ("iio: pressure: bmp280: split driver in logical parts") Signed-off-by:
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David Lechner authored
The Analog Devices Inc. AD4695 (and similar chips) are complex ADCs that will benefit from a detailed driver documentation. This documents the current features supported by the driver. Signed-off-by:
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David Lechner authored
This is a new driver for Analog Devices Inc. AD4695 and similar ADCs. The initial driver supports initializing the chip including configuring all possible LDO and reference voltage sources as well as any possible voltage input channel wiring configuration. Only the 4-wire SPI wiring mode where the CNV pin is tied to the CS pin is supported at this time. And reading sample data from the ADC can only be done in direct mode for now. Co-developed-by:
Ramona Gradinariu <ramona.gradinariu@analog.com> Signed-off-by:
Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240711-iio-adc-ad4695-v4-2-c31621113b57@baylibre.comSigned-off-by:
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David Lechner authored
Add device tree bindings for AD4695 and similar ADCs. Reviewed-by:
Conor Dooley <conor.dooley@microchip.com> Signed-off-by:
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Thorsten Blum authored
The variable uHz already has the type u64 and casting it to u64 is unnecessary. Remove the redundant type cast. Signed-off-by:
Thorsten Blum <thorsten.blum@toblux.com> Link: https://patch.msgid.link/20240711134502.168484-1-thorsten.blum@toblux.comSigned-off-by:
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Kim Seer Paller authored
LTC2664 4 channel, 12-/16-Bit Voltage Output SoftSpan DAC LTC2672 5 channel, 12-/16-Bit Current Output Softspan DAC Reviewed-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
Kim Seer Paller <kimseer.paller@analog.com> Reviewed-by:
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Kim Seer Paller authored
Add documentation for ltc2672. Reviewed-by:
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Kim Seer Paller authored
Add documentation for ltc2664. Reviewed-by:
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Kim Seer Paller authored
Introduce a generalized DAC binding that can be used by DACs that have similar properties adding output-range-microamp and output-range-microvolt. Reviewed-by:
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Kim Seer Paller authored
Add a new powerdown mode for DACs with 42kohm resistor to GND. Signed-off-by:
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Kim Seer Paller authored
Introduces a more generalized ABI documentation for DAC. Instead of having separate ABI files for each DAC, we now have a single ABI file that covers the common sysfs interface for all DAC. Signed-off-by:
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Nuno Sa authored
For APIs that have a return value, -EOPNOTSUPP is returned in case the backend does not support the functionality. However, for APIs that do not have a return value we are left in silence. Hence, at least print a debug message in case the callback is not implemented by the backend. Signed-off-by:
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Nuno Sa authored
Indio_dev was not being used in iio_backend_extend_chan_spec() so remove it. Signed-off-by:
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Julien Stephan authored
This adds a new page to document how to use the ad7380 ADC driver. Credit: this docs is based on ad7944 docs. Signed-off-by:
Julien Stephan <jstephan@baylibre.com> Link: https://patch.msgid.link/20240709-ad7380-add-docs-v1-1-458ced3dfcc5@baylibre.comSigned-off-by:
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Antoniu Miclaus authored
Add documentation for adxl380 driver which describes the driver device files and shows how the user may use the ABI for various scenarios (configuration, measurement, etc.). Signed-off-by:
Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://patch.msgid.link/20240708104114.29894-3-antoniu.miclaus@analog.comSigned-off-by:
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Antoniu Miclaus authored
The ADXL380/ADXL382 is a low noise density, low power, 3-axis accelerometer with selectable measurement ranges. The ADXL380 supports the +/-4 g, +/-8 g, and +/-16 g ranges, and the ADXL382 supports +/-15 g, +/-30 g and +/-60 g ranges. The ADXL380/ADXL382 offers industry leading noise, enabling precision applications with minimal calibration. The low noise, and low power ADXL380/ADXL382 enables accurate measurement in an environment with high vibration, heart sounds and audio. In addition to its low power consumption, the ADXL380/ADXL382 has many features to enable true system level performance. These include a built-in micropower temperature sensor, single / double / triple tap detection and a state machine to prevent a false triggering. In addition, the ADXL380/ADXL382 has provisions for external control of the sampling time and/or an external clock. Signed-off-by:
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Antoniu Miclaus authored
Add dt-bindings for ADXL380/ADLX382 low noise density, low power, 3-axis accelerometer with selectable measurement ranges. Reviewed-by:
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Vasileios Amoiridis authored
BMP2xx, BME280, BMP3xx, and BMP5xx use continuous buffers for their temperature, pressure and humidity readings. This facilitates the use of burst/bulk reads in order to acquire data faster. The approach is different from the one used in oneshot captures. BMP085 & BMP1xx devices use a completely different measurement process that is well defined and is used in their buffer_handler(). Suggested-by:
Angel Iglesias <ang.iglesiasg@gmail.com> Signed-off-by:
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Vasileios Amoiridis authored
Add extra IIO_CHAN_INFO_SCALE and IIO_CHAN_INFO_RAW channels in order to be able to calculate the processed value with standard userspace IIO tools. Can be used for triggered buffers as well. Even though it is not a good design choice to have SCALE, RAW and PROCESSED together, the PROCESSED channel is kept for ABI compatibility. While at it, separate BMPxxx and BMExxx device channels since BME supports also humidity measurements. Signed-off-by:
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Vasileios Amoiridis authored
Add the coefficients for the IIO standard units and the IIO value inside the chip_info structure. Move the calculations for the IIO unit compatibility from inside the read_{temp,press,humid}() functions and move them to the general read_raw() function. In this way, all the data for the calculation of the value are located in the chip_info structure of the respective sensor. Signed-off-by:Adam Rizkalla <ajarizzo@gmail.com> Link: https://patch.msgid.link/20240628171726.124852-2-vassilisamir@gmail.comSigned-off-by:
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Marek Vasut authored
Add LiteOn LTR-308 support into LTR-F216A kernel driver. The two devices seem to have almost identical register map, except that the LTR-308 does not have three CLEAR_DATA registers, which are unused by this driver. Furthermore, LTR-308 and LTR-F216A use different lux calculation constants, 0.6 and 0.45 respectively. Both differences are handled using chip info data. https://optoelectronics.liteon.com/upload/download/DS86-2016-0027/LTR-308ALS_Final_%20DS_V1%201.pdf https://optoelectronics.liteon.com/upload/download/DS86-2019-0016/LTR-F216A_Final_DS_V1.4.PDFSigned-off-by:
Marek Vasut <marex@denx.de> Link: https://patch.msgid.link/20240708114227.18283-2-marex@denx.deSigned-off-by:
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Marek Vasut authored
Document LiteOn LTR-308 support in LTR-F216A bindings. The two devices seem to have almost identical register map, except that the LTR-308 does not have three CLEAR_DATA registers, which are unused by this driver. Furthermore, LTR-308 and LTR-F216A use different lux calculation constants, 0.6 and 0.45 respectively. https://optoelectronics.liteon.com/upload/download/DS86-2016-0027/LTR-308ALS_Final_%20DS_V1%201.pdf https://optoelectronics.liteon.com/upload/download/DS86-2019-0016/LTR-F216A_Final_DS_V1.4.PDFSigned-off-by:
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Matti Vaittinen authored
The ROHM BU27034 light sensor has two data channels for measuring different frequencies of light. The result from these channels is combined into Lux value while the raw channel values are reported via intensity channels. Both of the intensity channels have adjustable gain setting which impacts the scale of the raw channels. Eg, doubling the gain will double the values read from the raw channels, which halves the scale value. The integration time can also be set for the sensor. This does also have an impact to the scale of the intensity channels because increasing the integration time will also increase the values reported via the raw channels. Impact of integration time to the scale and the fact that the scale value does not start from '1', can make it hard for a human reader to compute the gain values based on the scale. Add read-only HARDWAREGAIN to help debugging. Signed-off-by:
Matti Vaittinen <mazziesaccount@gmail.com> Link: https://patch.msgid.link/ec349847cc994f3bd632e99b408a31e7c70581d0.1720176341.git.mazziesaccount@gmail.comSigned-off-by:
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Matti Vaittinen authored
The ROHM BU27034NUC was cancelled and BU27034ANUC is replacing this sensor. The lux computation based on the data from a BU27034ANUC is different from the computation for the data from an old BU27034NUC. Fix the lux computation. Signed-off-by:
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Matti Vaittinen authored
The ROHM BU27034NUC was cancelled and BU27034ANUC is replacing this sensor. The BU27034ANUC does not support all the gains or all the integration times that were supported on BU27034NUC. Srop unsupported times and gains Signed-off-by:
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Matti Vaittinen authored
The ROHM BU27034NUC was cancelled and BU27034ANUC is replacing this sensor. The BU27034ANUC does not have the data2 channel. Drop the data2 channel. Signed-off-by:
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Matti Vaittinen authored
The ROHM BU27034NUC was cancelled and BU27034ANUC is replacing this sensor. These senors aren't compatible from the software point of view. According to ROHM, the BU27034NUC was never mass-produced. Hence dropping the BU27034NUC support and using this driver to support BU27034ANUC should not be a problem to users. We however need to ensure than people who use old kernel with the old BU27034NUC driver don't get the old driver probed for the new sensor. Prepare to use the BU27034NUC driver to support the new BU27034ANUC and change the compatible to prevent probing the old driver with the new sensor. Signed-off-by:
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Matti Vaittinen authored
The BU27034NUC was cancelled before it entered mass production. It was replaced by a new variant BU27034ANUC (note, added 'A'). The new variant gained a few significant changes, like removal of the 3.rd data channel and dropping some of the gain settings. This means that, from software point of view these ICs are incompatible. Lux calculation based on the data from the sensors needs to be done differently, and on the BU27034ANUC the channel 3 data is missing. Also, the gain setting differencies matter. Unfortunately, the identification register was not changed so there is no safe way for the software to distinguish the variants. According to the ROHM HQ engineers, the old BU27034NUC should not be encountered in the wild. Hence it makes sense to remove the support for the old BU27034NUC and add support for the new BU27034ANUC. Change the compatible in order to not load the incompatible old driver for new sensor (or, if someone had the old sensor, the new driver for it). Drop the compatible for old sensor which should not be in the wild and add a new compatible for the new model with accurate model suffix 'anuc'. Rename the file to match the new compatible. Signed-off-by:
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Vasileios Amoiridis authored
The reading of the pressure and humidity value, requires an update of the t_fine variable which happens by reading the temperature value. So the bme680_read_{press/humid}() functions of the above sensors are internally calling the equivalent bme680_read_temp() function in order to update the t_fine value. By just looking at the code this relation is a bit hidden and is not easy to understand why those channels are not independent. This commit tries to clear these thing a bit by splitting the bme680_{read/compensate}_{temp/press/humid}() to the following: i. bme680_read_{temp/press/humid}_adc(): read the raw value from the sensor. ii. bme680_calc_t_fine(): calculate the t_fine variable. iii. bme680_get_t_fine(): get the t_fine variable. iv. bme680_compensate_{temp/press/humid}(): compensate the adc values and return the calculated value. v. bme680_read_{temp/press/humid}(): combine calls of the aforementioned functions to return the requested value. Signed-off-by: -
Vasileios Amoiridis authored
Whenever the sensor is set to forced mode, a TPHG cycle is triggered and the values of temperature, pressure, humidity and gas become ready to be read. The setup of the forced mode to trigger measurements was located inside the read_{temp/gas}() functions. This was not posing a functional problem since read_{humid/press}() are internally calling read_temp() so the forced mode is set through this call. This is not very clear and it is kind of hidden that regardless of the measurement, the setup of the forced mode needs to happen before any measurement. Signed-off-by: -
Vasileios Amoiridis authored
There is no need to explicitly configure the gas measurement registers every time a gas measurement takes place. These are initial configurations which are written in the beginning and they are not changed throughout the lifetime of the driver. If in the future, the device starts to support multiple configuration profiles with variable heater duration and heater temperature, then they could become members of the ->read_avail(). Signed-off-by:
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Vasileios Amoiridis authored
There are multiple cases in the probe function that dev_err_probe() fits the needs, so use it. Signed-off-by:
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