- 30 Mar, 2024 1 commit
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David Lechner authored
This modifies the ad7944 driver to use spi_optimize_message() to reduce CPU usage and increase the max sample rate by avoiding repeating validation of the spi message on each transfer. Signed-off-by:
David Lechner <dlechner@baylibre.com> Link: https://lore.kernel.org/r/20240328-ad7944-spi-optimize-message-v2-1-a142b2576379@baylibre.comSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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- 28 Mar, 2024 9 commits
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David Lechner authored
This simplifies the adi,spi-mode property parsing by using device_property_match_property_string() instead of two separate functions. Also, the error return value is now more informative in cases where there was a problem parsing the property. Suggested-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
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Laurent Pinchart authored
The DAC081C081 is a TI DAC whose software interface is compatible with the DAC5571. It is the 8-bit version of the DAC121C081, already supported by the DAC5571 driver. Extends the driver to support this chip. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
Sean Nyekjaer <sean@geanix.com <mailto:sean@geanix.com>> Link: https://lore.kernel.org/r/20240325203245.31660-3-laurent.pinchart@ideasonboard.comSigned-off-by:
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Laurent Pinchart authored
The DAC081C081 is a TI DAC whose software interface is compatible with the DAC5571. It is the 8-bit version of the DAC121C081, already supported by the DAC5571 bindings. Extends the bindings to support this chip. Signed-off-by:
Sean Nyekjaer <sean@geanix.com> Link: https://lore.kernel.org/r/20240325203245.31660-2-laurent.pinchart@ideasonboard.comSigned-off-by:
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Javier Carrasco authored
The Maxim max30101 is the replacement for the max30105, which is no longer recommended for future designs. Their internal structure is identical, as well as the register map, configuration options and sensitivity, which allows for code recycling. Signed-off-by:
Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240324-max30101-v2-2-611deb510c97@gmail.comSigned-off-by:
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Javier Carrasco authored
The Maxim max30101 is the replacement for the max30105, which is no longer recommended for future designs. The max30101 does not require new properties, and it can be described with the existing ones for the max30105, which will be used as a fallback compatible. Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240324-max30101-v2-1-611deb510c97@gmail.comSigned-off-by:
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Christophe JAILLET authored
Use spi_read() instead of hand-writing it. It is less verbose. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/8327ac591d244ac85aa83c01e559076159c7ba12.1711283728.git.christophe.jaillet@wanadoo.frSigned-off-by:
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Vasileios Amoiridis authored
Sort headers in alphabetical order. Signed-off-by:
Vasileios Amoiridis <vassilisamir@gmail.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240319002925.2121016-2-vassilisamir@gmail.comSigned-off-by:
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David Lechner authored
This adds a new page to document how to use the ad7944 ADC driver. Signed-off-by:
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David Lechner authored
Patches touching the IIO subsystem documentation should also be sent to the IIO mailing list. Signed-off-by:
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- 25 Mar, 2024 30 commits
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David Lechner authored
This adds support for AD7944 ADCs wired in "3-wire mode". (NOTE: 3-wire is the datasheet name for this wiring configuration and has nothing to do with SPI_3WIRE.) In the 3-wire mode, the SPI controller CS line can be wired to the CNV line on the ADC and used to trigger conversions rather that using a separate GPIO line. The turbo/chain mode compatibility check at the end of the probe function is technically can't be triggered right now but adding it now anyway so that we don't forget to add it later when support for daisy-chaining is added. Reviewed-by:
Nuno Sa <nuno.sa@analog.com> Signed-off-by:
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Colin Ian King authored
There is a statement with two semicolons. Remove the second one, it is redundant. Signed-off-by:
Colin Ian King <colin.i.king@gmail.com> Reviewed-by:
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Nuno Sa authored
Use the new cleanup magic for handling mutexes in IIO. This allows us to greatly simplify some code paths. While at it, also use __free(kfree) where allocations are done and drop obvious comment in iio_channel_read_min(). Signed-off-by:
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Nuno Sa authored
Use the new cleanup magic for handling mutexes in IIO. This allows us to greatly simplify some code paths. Signed-off-by:
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Nuno Sa authored
Use the new cleanup magic for handling mutexes in IIO. This allows us to greatly simplify some code paths. Signed-off-by:
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Nuno Sa authored
Use the new cleanup magic for handling mutexes in IIO. This allows us to greatly simplify some code paths. Note that we keep the plain mutex calls in the iio_device_release|acquire() APIs since in there the macros would likely not help much (as we want to keep the lock acquired when he leave the APIs). Signed-off-by:
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Jean-Baptiste Maneyrol authored
Add wakeup from suspend for WoM when enabled and put accel in low-power mode when suspended. Requires rewriting pwr_mgmt_1 register handling and factorize out accel LPF settings. Use a low-power rate similar to the chip sampling rate but always lower for a best match of the sampling rate while saving power and adjust threshold to follow the required roc value. Signed-off-by:
Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> Link: https://lore.kernel.org/r/20240311160557.437337-5-inv.git-commit@tdk.comSigned-off-by:
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Jean-Baptiste Maneyrol authored
Add new interrupt handler for generating WoM event from int status register bits. Launch from interrupt the trigger poll function for data buffer. Signed-off-by:
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Jean-Baptiste Maneyrol authored
Add WoM (roc rising) event as accel x_or_y_or_z event for all chips >= MPU-6500. This requires to create new MPU-6500 channels as default and MPU-6050 channels for older chips. Signed-off-by:
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Jean-Baptiste Maneyrol authored
WoM is a threshold test on accel value comparing actual sample with previous one. It maps best to roc rising event. Add support of a new WOM sensor and functions for handling the associated roc_rising event. The event value is in SI units. Ensure WOM is stopped and restarted at suspend-resume, handle usage with buffer data ready interrupt, and handle change in sampling rate impacting already set roc value. Signed-off-by:
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Javier Carrasco authored
The HDC3020 provides an active low reset signal that must be handled if connected. Asserting this signal turns the device into Trigger-on Demand measurement mode, reducing its power consumption when no measurements are required like in low-power modes. According to the datasheet, the longest "Reset Ready" is 3 ms, which is only taken into account if the reset signal is defined. Signed-off-by:
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Javier Carrasco authored
The HDC3020 provides an active low reset signal that is still not described in the bindings. Add reset-gpios to the bindings and the example. Reviewed-by:
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Javier Carrasco authored
The HDC3020 sensor carries out periodic measurements during normal operation, but as long as the power supply is enabled, it will carry on in low-power modes. In order to avoid that and reduce power consumption, the device can be switched to Trigger-on Demand mode, and if possible, turn off its regulator. According to the datasheet, the maximum "Power Up Ready" is 5 ms. Add resume/suspend pm operations to manage measurement mode and regulator state. Signed-off-by:
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David Lechner authored
This adds a driver for the Analog Devices Inc. AD7944, AD7985, and AD7986 ADCs. These are a family of pin-compatible ADCs that can sample at rates up to 2.5 MSPS. The initial driver adds support for sampling at lower rates using the usual IIO triggered buffer and can handle all 3 possible reference voltage configurations. Signed-off-by:
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David Lechner authored
This adds a new binding for the Analog Devices, Inc. AD7944, AD7985, and AD7986 ADCs. Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Andy Shevchenko authored
Convert the module to be property provider agnostic and allow it to be used on non-OF platforms. Include mod_devicetable.h explicitly to replace the dropped of.h which included mod_devicetable.h indirectly. Signed-off-by:
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Dumitru Ceclan authored
Add support for Analog Devices AD7172-2, AD7175-8, AD7177-2. Signed-off-by:
Dumitru Ceclan <mitrutzceclan@gmail.com> Link: https://lore.kernel.org/r/20240306110956.13167-4-mitrutzceclan@gmail.comSigned-off-by:
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Dumitru Ceclan authored
Rename to AD7172_2_ID to avoid confusion with _4 model. Reorder id's by reg value. Signed-off-by:
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Dumitru Ceclan authored
Add support for: AD7172-2, AD7175-8, AD7177-2. AD7172-4 does not feature an internal reference, check for external reference presence. Signed-off-by:
Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20240306110956.13167-2-mitrutzceclan@gmail.comSigned-off-by:
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Subhajit Ghosh authored
Driver support for Avago (Broadcom) APDS9306 Ambient Light Sensor. It has two channels - ALS and CLEAR. The ALS (Ambient Light Sensor) channel approximates the response of the human-eye providing direct read out where the output count is proportional to ambient light levels. It is internally temperature compensated and rejects 50Hz and 60Hz flicker caused by artificial light sources. Hardware interrupt configuration is optional. It is a low power device with 20 bit resolution and has configurable adaptive interrupt mode and interrupt persistence mode. The device also features inbuilt hardware gain, multiple integration time selection options and sampling frequency selection options. This driver also uses the IIO GTS (Gain Time Scale) Helpers Namespace for Scales, Gains and Integration time implementation. Signed-off-by:
Subhajit Ghosh <subhajit.ghosh@tweaklogic.com> Link: https://lore.kernel.org/r/20240309105031.10313-6-subhajit.ghosh@tweaklogic.comSigned-off-by:
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Subhajit Ghosh authored
Extend avago,apds9300.yaml schema file to support apds9306 device. Acked-by:
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Subhajit Ghosh authored
Include irq.h and irq level macro in the example for readability Acked-by:
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Subhajit Ghosh authored
All devices covered by the binding have a vdd supply. Acked-by:
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Subhajit Ghosh authored
Merge very similar schemas for APDS9300 and APDS9960. Suggested-by:
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Andy Shevchenko authored
No need to rewrite the value, instead use 'else' branch. This will also help further refactoring the code later on. Signed-off-by:
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Andy Shevchenko authored
In iio_device_alloc() when size of the private data is 0, the private pointer is calculated to point behind the valid data. Leave it NULL when no private data supplied. Fixes: 6d4ebd56 ("iio: core: wrap IIO device into an iio_dev_opaque object") Signed-off-by:
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Javier Carrasco authored
The C standard specifies that there is no need to cast from a pointer to void [1]. Therefore, it can be safely dropped. [1] C Standard Committee: https://c0x.shape-of-code.com/6.3.2.3.htmlSigned-off-by:
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Javier Carrasco authored
The C standard specifies that there is no need to cast from a pointer to void [1]. Therefore, it can be safely dropped. [1] C Standard Committee: https://c0x.shape-of-code.com/6.3.2.3.htmlSigned-off-by:
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Javier Carrasco authored
The C standard specifies that there is no need to cast from a pointer to void [1]. Therefore, it can be safely dropped. [1] C Standard Committee: https://c0x.shape-of-code.com/6.3.2.3.htmlSigned-off-by:
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Dumitru Ceclan authored
The AD7173 family offer a complete integrated Sigma-Delta ADC solution which can be used in high precision, low noise single channel applications or higher speed multiplexed applications. The Sigma-Delta ADC is intended primarily for measurement of signals close to DC but also delivers outstanding performance with input bandwidths out to ~10kHz. Reviewed-by:
Andy Shevchenko <andy@kernel.org> Reviewed-by: Michael Walle <michael@walle.cc> # for gpio-regmap Signed-off-by:
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