- 20 Apr, 2024 14 commits
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Nuno Sa authored
Support the Analog Devices Generic AXI DAC IP core. The IP core is used for interfacing with digital-to-analog (DAC) converters that require either a high-speed serial interface (JESD204B/C) or a source synchronous parallel interface (LVDS/CMOS). Typically (for such devices) SPI will be used for configuration only, while this IP core handles the streaming of data into memory via DMA. Signed-off-by:
Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240419-iio-backend-axi-dac-v4-9-5ca45b4de294@analog.comSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Nuno Sa authored
This adds the needed backend ops for supporting a backend inerfacing with an high speed dac. The new ops are: * data_source_set(); * set_sampling_freq(); * extend_chan_spec(); * ext_info_set(); * ext_info_get(). Also to note the new helpers that are meant to be used by the backends when extending an IIO channel (adding extended info): * iio_backend_ext_info_set(); * iio_backend_ext_info_get(). Signed-off-by:
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Nuno Sa authored
This adds the bindings documentation for the 14 bit RF Digital-to-Analog converter. Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Nuno Sa authored
This adds the bindings documentation for the Analog Devices AXI DAC IP core. Reviewed-by:
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Paul Cercueil authored
Use the iio_dma_buffer_write() and iio_dma_buffer_space_available() functions provided by the buffer-dma core, to enable write support in the buffer-dmaengine code. Signed-off-by:
Paul Cercueil <paul@crapouillou.net> Reviewed-by:
Alexandru Ardelean <ardeleanalex@gmail.com> Signed-off-by:
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Paul Cercueil authored
Update the devm_iio_dmaengine_buffer_setup() function to support specifying the buffer direction. Update the iio_dmaengine_buffer_submit() function to handle input buffers as well as output buffers. Signed-off-by:
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Paul Cercueil authored
Adding write support to the buffer-dma code is easy - the write() function basically needs to do the exact same thing as the read() function: dequeue a block, read or write the data, enqueue the block when entirely processed. Therefore, the iio_buffer_dma_read() and the new iio_buffer_dma_write() now both call a function iio_buffer_dma_io(), which will perform this task. Note that we preemptively reset block->bytes_used to the buffer's size in iio_dma_buffer_request_update(), as in the future the iio_dma_buffer_enqueue() function won't reset it. Signed-off-by:
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Paul Cercueil authored
Change its name to iio_dma_buffer_usage(), as this function can be used both for the .data_available and the .space_available callbacks. Signed-off-by:
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Nuno Sa authored
This brings the DMA buffer API more in line with what we have in the triggered buffer. There's no need of having both devm_iio_dmaengine_buffer_setup() and devm_iio_dmaengine_buffer_alloc(). Hence we introduce the new iio_dmaengine_buffer_setup() that together with devm_iio_dmaengine_buffer_setup() should be all we need. Note that as part of this change iio_dmaengine_buffer_alloc() is again static and the axi-adc was updated accordingly. Signed-off-by:
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Thomas Haemmerle authored
Both functions `dps310_get_pres_precision` and `dps310_get_temp_precision` provide the oversampling rate by calling the `BIT()` macro. However, to look up the corresponding scale factor, we need the register value itself. Currently, this is achieved by undoing the calculation of the oversampling rate with `ilog2()`. Simplify the two functions for getting the scale factor and directly use the register content for the lookup. Signed-off-by:
Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com> Link: https://lore.kernel.org/r/20240415105030.1161770-5-thomas.haemmerle@leica-geosystems.comSigned-off-by:
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Thomas Haemmerle authored
Align the check of return values `regmap_read` so that it's consistent across this driver code. Signed-off-by:
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Thomas Haemmerle authored
Align error handling with `dps310_calculate_temp`, where it's not possible to differentiate between errors and valid calculations by checking if the returned value is negative. Signed-off-by:
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Thomas Haemmerle authored
The current implementation interprets negative values returned from `dps310_calculate_temp` as error codes. This has a side effect that when negative temperature values are calculated, they are interpreted as error. Fix this by using the return value only for error handling and passing a pointer for the value. Fixes: ba6ec48e ("iio: Add driver for Infineon DPS310") Signed-off-by:
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Chris Morgan authored
Add support for the GPADC for the Allwinner H616. It is identical to the existing ADC for the D1/T113s/R329/T507 SoCs. Signed-off-by:
Chris Morgan <macromorgan@hotmail.com> Acked-by:
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- 13 Apr, 2024 8 commits
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Krzysztof Kozlowski authored
Store pointers to chip info (struct ad5755_chip_info) in driver match data, instead of enum, so every value will be != 0, populate the of_device_id table and use it in driver. Even though it is one change, it gives multiple benefits: 1. Allows to use spi_get_device_match_data() dropping local 'type' variable. 2. Makes both ID tables usable, so kernel can match via any of these methods. 3. Code is more obvious as both tables are properly filled. 4. Fixes W=1 warning: ad5755.c:866:34: error: unused variable 'ad5755_of_match' [-Werror,-Wunused-const-variable] Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240413154511.52576-1-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Jean-Baptiste Maneyrol authored
Add ICM-42688-P support inside driver. Signed-off-by:
Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> Link: https://lore.kernel.org/r/20240408090720.847107-3-inv.git-commit@tdk.comSigned-off-by:
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Jean-Baptiste Maneyrol authored
Add bindings for ICM-42688-P chip. Signed-off-by:
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David Lechner authored
Since commit 6020ca4d ("iio: adc: ad7944: use spi_optimize_message()"), The helper functions wrapping spi_sync() for 3-wire and 4-wire modes are virtually identical. Since gpiod_set_value_cansleep() does a NULL check internally, we can consolidate the two functions into one and avoid switch statements at the call sites. The default cases of the removed switch statement were just to make the compiler happy and are not reachable since the mode is validated in the probe function. So removing those should be safe. Signed-off-by:
David Lechner <dlechner@baylibre.com> Link: https://lore.kernel.org/r/20240412-ad7944-consolidate-msg-v1-1-7fdeff89172f@baylibre.comSigned-off-by:
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Luca Weiss authored
Before all supported sensors except for MPU{9150,9250,9255} were not allowed to use i2c-gate in the bindings which excluded quite a few supported sensors where this functionality is supported. Switch the list of sensors to ones where the Linux driver explicitly disallows support for the auxiliary bus ("inv_mpu_i2c_aux_bus"). Since the driver is also based on "default: return true" this should scale better into the future. Signed-off-by:Luca Weiss <luca@z3ntu.xyz> Acked-by:
Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20240408-mpu6050-i2c-gate-v1-1-621f051ce7de@z3ntu.xyzSigned-off-by:
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Jonathan Cameron authored
Switching to the _scoped() version removes the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. In this case that's all in error paths. A slightly less convincing usecase than many as all the failure paths are wrapped up in a call to a per fwnode_handle utility function. The complexity in that function is sufficient that it makes sense to factor it out even if it this new auto cleanup would enable simpler returns if the code was inline at the call site. Hence I've left it alone. Cc: Marijn Suijten <marijn.suijten@somainline.org> Reviewed-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20240330185305.1319844-3-jic23@kernel.orgSigned-off-by:
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Jonathan Cameron authored
Switching to the _scoped() version removes the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. In this case that's all in error paths. Note this would have made the bug fixed in the previous path much less likely as it allows for direct returns. Took advantage of dev_err_probe() to futher simplify things given no longer a need for the goto err. Cc: Olivier Moysan <olivier.moysan@foss.st.com> Tested-by:
Fabrice Gasnier <fabrice.gasnier@foss.st.com> Acked-by:
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Jonathan Cameron authored
This path would result in returning 0 / success on an error path. Cc: Olivier Moysan <olivier.moysan@foss.st.com> Fixes: 95bc8184 ("iio: adc: stm32-adc: add support of generic channels binding") Reviewed-by:
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- 06 Apr, 2024 18 commits
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Luca Weiss authored
For example the BMP280 barometric pressure sensor on Qualcomm MSM8974-based Nexus 5 smartphone exposes such file in sysfs. Document it. Whilst here, fix up incorrect repeated use of X as a wildcard for in_tempY_input. Signed-off-by:
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Subhajit Ghosh authored
Simplify event configuration flow. Suggested-by:
Jonathan Cameron <jic23@kernel.org> Link: https://lore.kernel.org/all/20240310124237.52fa8a56@jic23-huawei/Signed-off-by:
Subhajit Ghosh <subhajit.ghosh@tweaklogic.com> Link: https://lore.kernel.org/r/20240405104641.29478-1-subhajit.ghosh@tweaklogic.comSigned-off-by:
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Nuno Sa authored
Add support for the power supply regulator. Signed-off-by:
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Nuno Sa authored
Add a property for the VDD power supply regulator. Reviewed-by:
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Dan Carpenter authored
This was obviously supposed to be a bitwise negate instead of logical. Fixes: 76a1e6a4 ("iio: adc: ad7173: add AD7173 driver") Signed-off-by:
Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by:
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Dan Carpenter authored
The > comparison needs to be >= to prevent an out of bounds access. Fixes: 620d1e6c ("iio: light: Add support for APDS9306 Light Sensor") Signed-off-by:
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Lothar Rubusch authored
Add a setup function implementation to the spi module to enable spi-3wire when specified in the device-tree. If spi-3wire is not specified in the device-tree, NULL is returned as bus pre-initialization. This behavior is identical to the i2c initialization, hence the default initialization. Signed-off-by:
Lothar Rubusch <l.rubusch@gmail.com> Link: https://lore.kernel.org/r/20240401194906.56810-9-l.rubusch@gmail.comSigned-off-by:
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Lothar Rubusch authored
Add a comment to the probe() function to describe the passed function pointer argument in particular. Signed-off-by:
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Lothar Rubusch authored
Bring indio_dev, setup() and data initialization to begin of the probe() function to increase readability. Access members through data pointer to assure implicitely the driver's data instance is correctly initialized and functional. Signed-off-by:
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Lothar Rubusch authored
Provide a way for bus specific pre-configuration by adding a function pointer argument to the driver core's probe() function, and keep the driver core implementation bus independent. In case NULL was passed, a regmap_write() shall initialize all bits of the data_format register, else regmap_update() is used. In this way spi and i2c are covered. Signed-off-by:
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Lothar Rubusch authored
Add spi-3wire because the device allows to be configured for spi 3-wire communication. Signed-off-by:
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Lothar Rubusch authored
Move defines from core to the header file. Keep the defines block together in one location. Signed-off-by:
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Lothar Rubusch authored
Group the indio_dev initialization and bus configuration for improved readability. Signed-off-by:
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Lothar Rubusch authored
Replace write() data_format by regmap_update_bits() to keep bus specific pre-configuration which might have happened before on the same register. The bus specific bits in data_format register then need to be masked out, Remove the data_range field from the struct adxl345_data, because it is not used anymore. Signed-off-by:
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Jonathan Cameron authored
Also change both firmware parsing functions to return meaningful errors. Whilst for the ACPI case this isn't that useful, for the generic fwnode case we can return the errors coming from the property parsing instead of just whether we succeeded or not. Cc: Marius Cristea <marius.cristea@microchip.com> Reviewed-by:
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Jonathan Cameron authored
By using this scoped based cleanup direct returns on errors are enabled simplifying the code. Cc: Mihail Chindris <mihail.chindris@analog.com> Cc: Marcelo Schmitt <marcelo.schmitt1@gmail.com> Reviewed-by:
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Jonathan Cameron authored
This loop definition automatically release the fwnode_handle on early exit simplifying error handling paths. Cc: Kim Seer Paller <kimseer.paller@analog.com> Reviewed-by:
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Jonathan Cameron authored
This loop definition automatically releases the fwnode_handle on early exit such as the error cases seen here. This reducing boilerplate and the chance of a resource leak being introduced in future. Cc: Dumitru Ceclan <mitrutzceclan@gmail.com> Reviewed-by:
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