- 10 Aug, 2024 28 commits
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Nuno Sa authored
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16460_debugfs_init() void as the return code is ignored. Signed-off-by:
Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240809-dev-adis-debugfs-improv-v1-4-d3adb6996518@analog.comSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Nuno Sa authored
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16400_debugfs_init() void as the return code is ignored. Signed-off-by:
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Nuno Sa authored
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16480_debugfs_init() void as the return code is ignored. Signed-off-by:
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Nuno Sa authored
Use IS_ENABLED(CONFIG_DEBUG_FS) to return early in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. Signed-off-by:
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Dan Carpenter authored
This error path was intended to return, and not just print an error. The current code will lead to an error pointer dereference. Fixes: 371f778b ("iio: adc: add support for pac1921") Signed-off-by:
Dan Carpenter <dan.carpenter@linaro.org> Acked-by:
Matteo Martelli <matteomartelli3@gmail.com> Link: https://patch.msgid.link/1fa4ab12-0939-477d-bc92-306fd32e4fd9@stanley.mountainSigned-off-by:
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Colin Ian King authored
There is a spelling mistake in a dev_warn message. Fix it. Signed-off-by:
Colin Ian King <colin.i.king@gmail.com> Link: https://patch.msgid.link/20240807094745.4174785-1-colin.i.king@gmail.comSigned-off-by:
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Dan Carpenter authored
This comparison should be >= ARRAY_SIZE() instead of >. The "mspan" variable is later used as an array index into ltc2664_mspan_lut[] so this is an off by one bug. Fixes: 4cc2fc44 ("iio: dac: ltc2664: Add driver for LTC2664 and LTC2672") Signed-off-by:
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Denis Benato authored
Prevent triggers from stop working after the device has entered sleep: use iio_device_suspend_triggering and iio_device_resume_triggering helpers. Signed-off-by:
Denis Benato <benato.denis96@gmail.com> Link: https://patch.msgid.link/20240807185619.7261-3-benato.denis96@gmail.comSigned-off-by:
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Denis Benato authored
When a machine enters a sleep state while a trigger is associated to an iio device that trigger is not resumed after exiting the sleep state: provide iio device drivers a way to suspend and resume the associated trigger to solve the aforementioned bug. Each iio driver supporting external triggers is expected to call iio_device_suspend_triggering before suspending, and iio_device_resume_triggering upon resuming. Signed-off-by:
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Detlev Casanova authored
Add rockchip,rk3576-saradc compatible string. The saradc on RK3576 is compatible with the one on RK3588, so they are used together in an arm of the oneOf. Signed-off-by:
Detlev Casanova <detlev.casanova@collabora.com> Reviewed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by:
Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20240802214612.434179-5-detlev.casanova@collabora.comSigned-off-by:
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David Lechner authored
The common-mode-channel property is a scalar, not an array, so we should not be using items: in the schema when specifying allowable values. Reported-by:
Rob Herring <robh@kernel.org> Closes: https://lore.kernel.org/linux-iio/CAL_JsqKaddw8FnPfdnhKhHUb8AcTxFadc_eZmxjX0QxFR80=mw@mail.gmail.com/ Fixes: b40cafc1 ("dt-bindings: iio: adc: add AD4695 and similar ADCs") Signed-off-by:
David Lechner <dlechner@baylibre.com> Reviewed-by:
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Abhash Jha authored
Proximity and gesture offset registers perform offset correction to improve cross-talk performance. Added `calibbias` to the proximity and gesture channels. Provided facility to set calibbias based on the channel number. Signed-off-by:
Abhash Jha <abhashkumarjha123@gmail.com> Link: https://patch.msgid.link/20240804134212.51682-2-abhashkumarjha123@gmail.comSigned-off-by:
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Olivier Moysan authored
Add scaling support to STM32 DFSDM. When used in an analog context, a DFSDM filter typically converts the data from a sigma delta modulator. The IIO device associated to the DFSDM filter provides these data as raw data. The IIO device can provide scaling information (voltage and offset) to allow conversion of raw data into physical values. With the new binding based on IIO backend framework, the sigma delta modulators are defined as backends providing scaling information. The scaling is not supported with legacy binding. Signed-off-by:
Olivier Moysan <olivier.moysan@foss.st.com> Acked-by:
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Olivier Moysan authored
The legacy sd modulator driver registers the sigma delta modulator as an IIO channel provider. This implementation is not convenient when the SD modulator has to be cascaded with another IIO device. The scaling information is distributed across devices, which makes it difficult to report consistent scaling data on IIO devices. The solution is to expose these cascaded IIO devices as an aggregate device, which report global scaling information. Add IIO backend support to SD modulator to allow scaling information management. Signed-off-by:
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Olivier Moysan authored
Move to generic channels binding to ease new backend framework adoption and prepare the convergence with MDF IP support on STM32MP2 SoC family. Legacy binding: DFSDM is an IIO channel consumer. SD modulator is an IIO channels provider. The channel phandles are provided in DT through io-channels property and channel indexes through st,adc-channels property. New binding: DFSDM is an IIO channel provider. The channel indexes are given by reg property in channel child node. This new binding is intended to be used with SD modulator IIO backends. It does not support SD modulator legacy IIO devices. The st,adc-channels property presence is used to discriminate between legacy and backend bindings. The support of the DFSDM legacy channels and SD modulator IIO devices is kept for backward compatibility. Signed-off-by:
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Olivier Moysan authored
Allow to specify the reference voltage used by the SD modulator. When the SD modulator is defined as an IIO backend, the reference voltage can be used to evaluate scaling information of the IIO device. The reference voltage is not used otherwise. Signed-off-by:
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Olivier Moysan authored
The legacy sd modulator driver registers the sigma delta modulator as an IIO channel provider. This implementation is not convenient when the SD modulator has to be cascaded with another IIO device. The scaling information is distributed across devices, which makes it difficult to report consistent scaling data on IIO devices. The solution is to expose these cascaded IIO devices as an aggregate device, which report global scaling information. Add IIO backend support to SD modulator to allow scaling information management. Signed-off-by:
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Olivier Moysan authored
Change the DFSDM binding to use the new IIO backend framework, along with the adoption of IIO generic channels. This binding change allows to add scaling support to the DFSDM. Keep the legacy binding as deprecated for backward compatibility. The io-backends property is supported only in generic IIO channel binding. - Channel description with the generic binding (Audio and Analog): Properties superseded by generic properties: st,adc-channels: becomes "reg" property in channel node st,adc-channel-names: becomes "label" property in channel node Properties moved to channel child node: st,adc-channel-types: becomes st,adc-channel-type st,adc-channel-clk-src, st,adc-alt-channel - Analog binding: DFSDM filter channel is configured as an IIO backend consumer. Add io-backends property in channel child nodes. DFSDM is no more configured as a channel consumer from SD modulator. Use of io-channels in DFSDM node is deprecated. - Audio binding: DFSDM audio DAI is configured as a channel consumer from DFSDM filter. No change compare to legacy. Signed-off-by: -
Olivier Moysan authored
Add an API to support IIO generic channels binding: http://devicetree.org/schemas/iio/adc/adc.yaml# This new API is needed, as generic channel DT node isn't populated as a device. Add devm_iio_backend_fwnode_get() to allow an IIO device backend consumer to reference backend phandles in its child nodes. Signed-off-by:
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Olivier Moysan authored
Add iio_backend_disable() and iio_backend_enable() APIs to allow IIO backend consumer to request backend disabling and enabling. Signed-off-by:
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Olivier Moysan authored
Add iio_backend_read_scale() and iio_backend_read_offset() services to read channel scale and offset from an IIO backbend device. Also add a read_raw callback which replicates the read_raw callback of the IIO framework, and is intended to request miscellaneous channel attributes from the backend device. Both scale and offset helpers use this callback. Signed-off-by:
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Krzysztof Kozlowski authored
All compatibles in this binding without prefixes were deprecated, so adding a new deprecated one after some time is not allowed, because it defies the core logic of deprecating things. Drop the AK09916 vendorless compatible. Fixes: 76e28aa9 ("iio: magnetometer: ak8975: add AK09116 support") Signed-off-by:
Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20240806053016.6401-2-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Krzysztof Kozlowski authored
All compatibles in this binding without prefixes were deprecated, so adding a new deprecated one after some time is not allowed, because it defies the core logic of deprecating things. Drop the AK09916 vendorless compatible. Fixes: 76e28aa9 ("iio: magnetometer: ak8975: add AK09116 support") Signed-off-by:
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Nuno Sa authored
Document the debugfs interface for the IIO ad9467 high speed ADC. Signed-off-by:
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Nuno Sa authored
Document the maintainers for the IIO ad9467 high speed ADC. Signed-off-by:
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Nuno Sa authored
Call iio_backend_debugfs_add() to add (if available) the backend debug interface. Signed-off-by:
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Nuno Sa authored
Make it possible to read/write registers on the backend using the debugfs interface for it. Signed-off-by:
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Matteo Martelli authored
Trivial cleanup in __iio_format_value() for the IIO_VAL_FRACTIONAL case where tmp1 = vals[1] assignment is unneeded and irrelevant since tmp1 is immediately overwritten by the subsequent div_s64_rem() call. Signed-off-by:
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- 03 Aug, 2024 12 commits
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Dumitru Ceclan authored
During setup the st->adc_control is 0, which corresponds to a continuous conversion mode. The reset value for channel 1 is to enable it. The combined effect of these two is that the ADC will start conversions for channel 1 without them being read. This is not neccessarily a problem, but it is an unexpected behavior. Set the ADC state to idle during setup to avoid this. Signed-off-by:
Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by:
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Dumitru Ceclan authored
The ad7124_init_config_vref() function writes the AD7124_ADC_CONTROL register for each channel that is configured to use the internal reference. The ad7124_write_config()function performs 7 SPI transfers for configuring 2 registers: config_x and filter_x. Reduce the number of SPI transfers: -during the probe by only setting the st->adc_control value in ad7124_init_config_vref() and writing to the device only at the end of ad7124_setup(). -in ad7124_write_config() by grouping writes to the same register. Signed-off-by:
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Abhash Jha authored
Add support for configuring and reading the gain and resolution (integration time). Also provide the available values for gain and resoltion respectively via `read_avail` callback. Signed-off-by:
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Nuno Sa authored
One useful thing to do (in case of problems) in this high speed devices with digital interfaces is to try different test patterns to see if the interface is working properly (and properly calibrated). Hence add this to debugfs. On top of this, for some test patterns, the backend may have a matching validator block which can be helpful in identifying possible issues. For the other patterns some test equipment must be used so one can look into the signal and see how it looks like. Hence, we also add the backend debugfs interface with iio_backend_debugfs_add(). Signed-off-by:
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Nuno Sa authored
Group the backend configurations to be done in preparing and stopping calibration in two new helpers analogous to ad9467_testmode_set(). This is in preparation for adding support for debugFS test_mode where we need similar configurations as in the calibration process. Signed-off-by:
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Nuno Sa authored
Implement debugfs options to read/write registers and print the channel status into a buffer (so we may know better the cause for errors) . Signed-off-by:
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Nuno Sa authored
Add a new axi_adc_read_chan_status() helper so we get the raw register value out of it. This is in preparation of a future change where we really want to look into dedicated bits of the register. Signed-off-by:
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Nuno Sa authored
Add support for configuring the prbs23 sequence. Signed-off-by:
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Nuno Sa authored
Support ADI specific prb23 sequence that can be used both for calibrating or debugging digital interfaces. Signed-off-by:
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Nuno Sa authored
This adds a basic debugfs interface for backends. Two new ops are being added: * debugfs_reg_access: Analogous to the core IIO one but for backend devices. * debugfs_print_chan_status: One useful usecase for this one is for testing test tones in a digital interface and "ask" the backend to dump more details on why a test tone might have errors. Signed-off-by:
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Nuno Sa authored
Instead of only passing the backend ops when calling devm_iio_backend_register(), pass an info like structure that will contains the ops and additional information. Fow now, the backend name is being added as that will be used by the debugFS interface introduced in a later patch. It also opens the door for further customizations passed by backends. All users of devm_iio_backend_register() were updated accordingly. Signed-off-by:
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Rob Herring (Arm) authored
Use of_property_present() to test for property presence rather than of_find_property(). This is part of a larger effort to remove callers of of_find_property() and similar functions. of_find_property() leaks the DT struct property and data pointers which is a problem for dynamically allocated nodes which may be freed. Signed-off-by:
Andrew Jeffery <andrew@codeconstruct.com.au> Link: https://patch.msgid.link/20240731191312.1710417-5-robh@kernel.orgSigned-off-by:
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