- 04 Apr, 2019 40 commits
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Fabrice Gasnier authored
The sample frequency is driven using the oversampling ratio depending on the SPI bus frequency. Currently, oversampling ratio is computed by an entire division: - spi_freq / sample_freq. This may result in inaccurate value. Using DIV_ROUND_CLOSEST improves resulting sample frequency, which is useful for audio that requests fixed rates (such as: 8, 16 or 32 kHz). BTW, introduce new routine to re-factor sample frequency setting, and move frequency accuracy message from warning to debug level. Signed-off-by:
Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Cristian Sicilia authored
Aligned some parameters. Signed-off-by:
Cristian Sicilia <sicilia.cristian@gmail.com> Signed-off-by:
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Stefan Popa authored
The devicetree bindings documentation for ad7606 should also include the vendor prefix: ad7606.txt -> adi,ad7606.txt Fixes: 6e33a125 ("dt-bindings: iio: adc: Add docs for AD7606 ADC") Signed-off-by:
Stefan Popa <stefan.popa@analog.com> Reviewed-by:
Mukesh Ojha <mojha@codeaurora.org> Signed-off-by:
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Paresh Chaudhary authored
This patch adds support for Maxim MAX31856 thermocouple temperature sensor support. More information can be found in: https://www.maximintegrated.com/en/ds/MAX31856.pdf NOTE: Driver support only Comparator Mode. Signed-off-by:
Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com> Signed-off-by:
Matt Weber <matthew.weber@rockwellcollins.com> Signed-off-by:
Patrick Havelange <patrick.havelange@essensium.com> Signed-off-by:
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Paresh Chaudhary authored
This patch added device tree binding info for MAX31856 driver. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Patrick Havelange authored
This patch introduces common thermocouple types used by various temperature sensors. Also a brief documentation explaining this "thermocouple-type" property. Signed-off-by:
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Andreas Klinger authored
devantech-srf04.yaml: yaml devicetree binding for iio ultrasonic proximity driver of devantech srf04 use devantech-srf04.txt, transform binding into yaml and remove the outdated DT documentation Signed-off-by:
Andreas Klinger <ak@it-klinger.de> Reviewed-by:
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Lars-Peter Clausen authored
Replace diff_{m1,m2} with div_{m1,m2} since they are dividers and not a differential settings. Signed-off-by:Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by:
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Andy Shevchenko authored
If we put headers alphabetically sorted in the IIO driver, the compilation will abort because of unknown type to handle. Simple add a forward declaration of opaque struct iio_dev. Suggested-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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H. Nikolaus Schaller authored
Define bindings for "bosch,bmg160" and "bosch,bmi055_gyro". Signed-off-by:
H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by:
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H. Nikolaus Schaller authored
Add of_match_table. Signed-off-by:
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Mircea Caprioru authored
This patch removes the in_voltage-voltage_scale_available and in_voltage_scale_available attributes. These are replaced with available attributes added in info_mask_shared_by_type_available. With this modification the iio core will be responsible with naming the attributes thus removing the checkpatch warning related to in_voltage-voltage_scale_available naming. Signed-off-by:
Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by:
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Angus Ainslie (Purism) authored
Document the vishay VCNL4040 devicetree bindings. Signed-off-by:
Angus Ainslie (Purism) <angus@akkea.ca> Reviewed-by:
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Angus Ainslie (Purism) authored
The VCNL4040 is almost identical to the VCNL4200 as far as register layout goes but just need to check a different ID register location. Signed-off-by:
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Angus Ainslie (Purism) authored
Document the vishay VCNL4000 devicetree bindings. Signed-off-by:
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Angus Ainslie (Purism) authored
Add an of_match table for devicetree probing. Signed-off-by:
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Angus Ainslie (Purism) authored
The VCNL4200 datasheet says that word read and writes should be used to access the registers. Signed-off-by:
Tomas Novotny <tomas@novotny.cz> Signed-off-by:
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Fabrice Gasnier authored
Claim direct mode to ensure no buffer mode is in use for: - single conversion - sample rate setting (must be set when filter isn't enabled). - oversampling ratio (must be set when filter isn't enabled). Signed-off-by:
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Fabrice Gasnier authored
DFSDM conversions can be launched continuously, or using various triggers: - by software - hardware triggers (e.g. like in stm32-adc: TIM, LPTIM, EXTI) - synchronously with DFSDM filter 0. e.g. for filters 1, 2 Launching conversions can be done using two methods: a - injected: - scan mode can be used to convert several channels each time a trigger occurs. - When not is scan mode, channels are converted in sequence, one upon each trigger. b - regular: - supports software triggers or synchronous with filter 0 - single or continuous conversions This patch finalizes DFSDM operating modes using IIO buffer modes: - INDIO_BUFFER_SOFTWARE: regular continuous conversions (no trigger) but limited to 1 channel. Users must set sampling frequency in this case. For filters > 1, conversions can be started synchronously with filter 0. - INDIO_BUFFER_TRIGGERED: triggered conversions uses injected mode for launching conversions. DFSDM can use hardware triggers (e.g. STM32 timer or lptimer), so add INDIO_HARDWARE_TRIGGERED to supported modes. - INDIO_DIRECT_MODE: Only support DMA-based buffer modes. In case no DMA is available, only support single conversions. From userland perspective, to summarize various use cases: 1 - single conversion on any filter: $ cd iio:deviceX $ cat in_voltageY_raw This uses regular a conversion (not continuous) 2 - Using sampling frequency without trigger (single channel, buffer) $ cd iio:deviceX $ echo 100 > sampling_frequency $ echo "" > trigger/current_trigger $ echo 1 > scan_elements/in_voltageY_en $ echo 1 > buffer/enable This uses regular conversion in continuous mode (Frequency is achieved by tuning filter parameters) 3 - sync mode with filter 0: other filters can be converted when using "st,filter0-sync" dt property. The conversions will get started at the same time as filter 0. So for any filters > 1: $ cd iio:deviceX $ echo 100 > sampling_frequency $ echo "" > trigger/current_trigger $ echo 1 > scan_elements/in_voltageY_en $ echo 1 > buffer/enable Then start filter 0 as in 2 above. 4 - Using a hardware trigger (with one channel): - check trigger, configure it: $ cat /sys/bus/iio/devices/trigger1/name tim6_trgo $ echo 100 > /sys/bus/iio/devices/trigger1/sampling_frequency - go to any filter: $ echo 1 > scan_elements/in_voltageY_en $ echo tim6_trgo > trigger/current_trigger $ echo 1 > buffer/enable This uses injected conversion as it uses a hardware trigger (without scan) 5 - Using a hardware trigger (with 2+ channel): Same as in 4/ above, but enable two or more channels in scan_elements. This uses injected conversion as it uses a hardware trigger (with scan mode) Signed-off-by: -
Fabrice Gasnier authored
In order to support multiple channels in buffer mode, add support for scan mode. This is precursor patch to ease support of triggered buffer mode. Currently, only audio uses buffer mode: Regular continuous conversions with a single channel (per filter). DFSDM hardware supports scan mode (only) with injected conversions. Conversions can be launched by software (JSWSTART), trigger or synchronously with filter 0 (e.g. JSYNC). Continuous conversion mode isn't available for injected. Signed-off-by:
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Fabrice Gasnier authored
Optionally enable IIO hw consumer, when provided (e.g. for DFSDM_IIO type). This is precursor patch to introduce buffer modes. Signed-off-by:
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Fabrice Gasnier authored
Move DMA slave configuration to start routine: depending on regular or injected mode is in use, DMA needs to read resp. RDATAR or JDATAR. This is precursor patch to introduce injected mode (used for scan). Signed-off-by:
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Fabrice Gasnier authored
Move DMA enable (e.g. set RDMAEN bit) away from start_conv() that is used for both buffer and single conversions. Thus, single conv rely on interrupt, not dma. Note: take care to prepare all DMA stuff and set RDMAEN before starting filter (can be set only when DFEN=0). This is precursor patch to ease support of triggered buffer mode. Signed-off-by:
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Fabrice Gasnier authored
DFSDM regular continuous mode usage depends on current mode (not DMA): - for single conversion, RCONT doesn't need to be set. - for buffer mode, RCONT has to be set (e.g. INDIO_BUFFER_SOFTWARE used by audio currently). This is related to filter configuration, move it to relevant routine. This is precursor patch to ease support of triggered buffer mode. Signed-off-by:
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Fabrice Gasnier authored
Current ckout divider may be set to a value that makes ckout to exceed spi-max-frequency. Rather use lower value (e.g. round up divider when ckout isn't accurate). Also when the SPI clock isn't accurate, 'spi_master_freq' is filled in with expected frequency. Use computed value instead to be more accurate: - e.g. source clock / (CKOUTDIV + 1) Enforce checks on the divider: ckoutdiv range can be from 1-255 to provide divider of 2-256. Signed-off-by:
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Marcelo Schmitt authored
Change device attributes' names to match ABI documentation. Names were chosen such that they tend to be similar to existing ABI so it should be easier to standardize them when necessary. Signed-off-by:
Marcelo Schmitt <marcelo.schmitt1@gmail.com> Signed-off-by:
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Vladimir Petrigo authored
- Fix CHECK Macro argument 'wordsize' may be better as '(wordsize)' to avoid precedence issues Slightly modified by Jonathan to take into account the staging graduation and a copy and paste version of the same item on the following line. Signed-off-by:
Vladimir Petrigo <vladimir.petrigo@gmail.com> Signed-off-by:
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Alexandru Ardelean authored
Final part of the re-organization. Move the `adis16400.h` into `adis16400.c` since it no longer needs to be shared among other files. Signed-off-by:
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Alexandru Ardelean authored
This change does a simple 1-to-1 rename of the adis16400_core.c file. Now that the `adis16400_buffer.c` file was removed, everything can be moved into a single driver file. But first, this rename. Signed-off-by:
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Alexandru Ardelean authored
This change has been done separately, so that it's easier to visualize the changed logic in the adis_scan_update() function. Most of the function in this `adis16400_update_scan_mode()` that deals with burst-mode will be re-used in the ADIS16480, but with different parameters. Signed-off-by:
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Alexandru Ardelean authored
Some variants in the ADIS16400 family support burst mode. This mechanism is implemented in the `adis16400_buffer.c` file. Some variants in ADIS16480 are also adding burst mode, which is functionally similar to ADIS16400, but with different parameters. To get there, a `adis_burst` struct is added to parametrize certain bits of the SPI communication to setup: the register that triggers burst-mode, and the extra-data-length that needs be accounted for when building the bust-length buffer. The trigger handler cannot be made generic, since it's very specific to each ADIS164XX family. A future enhancement of this `adis_burst` mode will be the possibility to enable/disable burst-mode. For the ADIS16400 family it's hard-coded to on by default. But for ADIS16480 there will be a need to disable this. When that will be implemented, both ADIS16400 & ADIS16480 will have the burst-mode enable-able/disable-able. Signed-off-by:
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Alexandru Ardelean authored
The trigger handler for the ADIS16400 is very different from the generic one in the ADIS library. Keeping it in a separate file won't make much sense once the update_scan_mode function will be made more generic and moved into the ADIS library. Signed-off-by:
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Cristian Sicilia authored
Fix CamelCase naming. Signed-off-by:
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Cristian Sicilia authored
Creating a temporary variable to improve readability Signed-off-by:
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Cristian Sicilia authored
Enclosing parameter with parenthesis due to avoid possible precedence issue. Signed-off-by:
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Andreas Klinger authored
add a maintainer for the newly created ultrasonic driver family of maxbotix Signed-off-by:
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Andreas Klinger authored
Add I2CXL-MaxSonar ultrasonic distance sensors of types mb1202, mb1212, mb1222, mb1232, mb1242, mb7040, mb7137 using an i2c interface Implemented functionality: - reading the distance via in_distance_raw - buffered mode with trigger - make use of interrupt to announce completion of ranging Add mb1232 driver to Kconfig and Makefile Signed-off-by:
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Andreas Klinger authored
Add doc for dt binding maxbotix,mb1232. This binding is for MaxBotix I2CXL-MaxSonar ultrasonic rangers which share a common i2c interface. Signed-off-by:
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Andreas Klinger authored
Add MaxBotix, which is a vendor of ultrasonic rangers in different varieties and interfaces. Signed-off-by:
Andreas Färber <afaerber@suse.de> Reviewed-by:
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Kangjie Lu authored
devm_regmap_init_i2c may fail and return NULL. The fix returns the error when it fails. Signed-off-by:
Kangjie Lu <kjlu@umn.edu> Signed-off-by:
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