- 17 Nov, 2018 3 commits
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Stefan Popa authored
The ad7124-4 and ad7124-8 are a family of 4 and 8 channel sigma-delta ADCs with 24-bit precision and reference. Three power modes are available which in turn affect the output data rate: * Full power: 9.38 SPS to 19,200 SPS * Mid power: 2.34 SPS to 4800 SPS * Low power: 1.17 SPS to 2400 SPS The ad7124-4 can be configured to have four differential inputs, while ad7124-8 can have 8. Moreover, ad7124 also supports per channel configuration. Each configuration consists of gain, reference source, output data rate and bipolar/unipolar configuration. Datasheets: Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-4.pdf Link: http://www.analog.com/media/en/technical-documentation/data-sheets/ad7124-8.pdfSigned-off-by:
Stefan Popa <stefan.popa@analog.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Stefan Popa authored
There are several ADC drivers that depend on the same device tree bindings. Rather than continue to duplicate the properties, this patch adds a common adc binding document that can be referenced. For beginning, only two properties are documented. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Lars-Peter Clausen authored
Some newer devices from the Sigma-Delta ADC family do have their data register at a different address than the current default address. Add a parameter to the ad_sigma_delta_info struct which allows to override the default address. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
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- 16 Nov, 2018 28 commits
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Nishad Kamdar authored
Add device tree table for matching vendor ID. Signed-off-by:
Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by:
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Lorenzo Bianconi authored
Add entry for st_lsm6dsx imu driver in MAINTAINERS file Signed-off-by:
Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by:
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Slawomir Stepien authored
Try to get the device's data using OF API. In case of failure, fallback to the spi_get_device_id() method. Signed-off-by:
Slawomir Stepien <sst@poczta.fm> Signed-off-by:
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Slawomir Stepien authored
devm_* APIs are device managed and make code simpler. Signed-off-by:
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Slawomir Stepien authored
Power down the device if anything goes wrong after the SPI has been setup correctly in the probe function. Existing code that toggles the AD7280A_CTRL_LB_SWRST bit inside ad7280_chain_setup function is responsible for powering up the device. Signed-off-by:
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Lorenzo Bianconi authored
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Lorenzo Bianconi authored
Introduce hw FIFO support to lsm6dsx i2c controller. st_lsm6dsx sensor-hub relies on SLV0 for slave configuration since SLV0 is the only channel that can be used to write into i2c slave devices. SLV{1,2,3} channels are used to read external data and push them into the hw FIFO Signed-off-by: -
Lorenzo Bianconi authored
Introduce st_lsm6dsx_push_tagged_data routine to push samples to iio buffers. st_lsm6dsx_push_tagged_data will be reused adding hw fifo support to st_lsm6dsx i2c embedded controller in order to improve code readability Signed-off-by:
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Lorenzo Bianconi authored
i2c controller embedded in lsm6dx series can connect up to four slave devices using accelerometer sensor as trigger for i2c read/write operations. Introduce sensor hub support for lsm6dso sensor. Add register map for lis2mdl magnetometer sensor. In order to perform single read/write operations st_lsm6dsx driver relies on SLV0 channel (hw FIFO is not supported yet) Signed-off-by:
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Lorenzo Bianconi authored
Add st_lsm6dsx_sensor_set_enable routine and remove st_lsm6dsx_sensor_{enable/disable} ones in order to make the code more readable and remove unnecessary functions Signed-off-by: -
Lorenzo Bianconi authored
Add ST_LSM6DSX_ID_EXT{0,1,2} sensor ids as reference for slave devices connected to st_lsm6dsx i2c controller. Moreover introduce odr dependency between accel and ext devices since i2c embedded controller relies on the accelerometer sensor as bus read/write trigger so we need to enable accel device at odr = max(accel_odr, ext_odr) in order to properly communicate with i2c slave devices Signed-off-by: -
Lorenzo Bianconi authored
Remove static qualifier from st_lsm6dsx_set_watermark routine in order to be reused supporting st_lsm6dsx i2c controller Signed-off-by:
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Lorenzo Bianconi authored
Perform a complete device reset at bootstrap reloading trimming parameter after sw reset is completed. Device sw reset/boot is explained here: https://www.st.com/resource/en/application_note/dm00517282.pdf, section 5.7 Signed-off-by:
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Lorenzo Bianconi authored
Add st_lsm6dsx_update_bits_locked, st_lsm6dsx_read_locked and st_lsm6dsx_write_locked utility routines in order to guarantee the bus access is atomic respect to reg page configuration. This is a preliminary patch to add i2c sensor hub support since i2c master registers are accessed through a reg page multiplexer Signed-off-by:
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Freeman Liu authored
Sometimes the ADC controller met some problems, and it will not complete the data conversion, that will can not wake up the read process any more to block users. So we should add one maximum conversion time to avoid this issue. Signed-off-by:
Freeman Liu <freeman.liu@unisoc.com> Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Signed-off-by:
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Renato Lui Geh authored
This patch removes the unnecessary field int_vref_mv in ad7780_state referring to the device's voltage. Signed-off-by:
Renato Lui Geh <renatogeh@gmail.com> Acked-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by:
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Renato Lui Geh authored
The ad7780 driver previously did not read the correct device output, as it read an outdated value set at initialization. It now updates its voltage on read. Signed-off-by:
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Song Qiang authored
PNI RM3100 is a high resolution, large signal immunity magnetometer, composed of 3 single sensors and a processing chip with a MagI2C interface. Following functions are available: - Single-shot measurement from /sys/bus/iio/devices/iio:deviceX/in_magn_{axis}_raw - Triggerd buffer measurement. - DRDY pin for data ready trigger. - Both i2c and spi interface are supported. - Both interrupt and polling measurement is supported, depends on if the 'interrupts' in DT is declared. Signed-off-by:Song Qiang <songqiang1304521@gmail.com> Signed-off-by:
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Song Qiang authored
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Song Qiang authored
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Heiko Stuebner authored
This commit add support for STMicroelectronics lis3de accelerometer. Datasheet for this device can be found here: https://www.st.com/resource/en/datasheet/lis3de.pdfSigned-off-by:
Heiko Stuebner <heiko.stuebner@bq.com> Acked-by:
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Parthiban Nallathambi authored
Adding device tree binding for vcnl4035 and vendor prefix for Vishay Intertechnology Signed-off-by:
Parthiban Nallathambi <pn@denx.de> Reviewed-by:
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Parthiban Nallathambi authored
Add support for VCNL4035, which is capable of Ambient light sensing (ALS) and proximity function. This patch adds support only for ALS function Signed-off-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
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Kuninori Morimoto authored
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by:
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by:
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Kuninori Morimoto authored
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by:
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Kuninori Morimoto authored
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by:
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Giuliano Belinassi authored
Previously, all pattern_masks and patterns in the chip_info table were hardcoded. Now they are generated using the PAT macros, as described in the datasheets. Signed-off-by:
Giuliano Belinassi <giuliano.belinassi@usp.br> Signed-off-by:
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Giuliano Belinassi authored
Only the ad778x have the 'gain' status bit. Check it before updating through a new variable is_ad778x in chip_info. Signed-off-by:
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- 11 Nov, 2018 9 commits
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Nishad Kamdar authored
The RD/WR pin and CONVST pin are logical inputs to the AD78xx chip as per the datasheet. Hence convert them to outputs. Signed-off-by:
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Nishad Kamdar authored
AD7818 does not support busy_pin functionality as per datasheet. Hence drop busy_pin when AD7818 is used. Signed-off-by:
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Martin Blumenstingl authored
Channel 6 of the SAR ADC can be switched between two inputs: SAR_ADC_CH6 input (an actual pad on the SoC) and the signal from the temperature sensor inside the SoC. To get usable results from the temperature sensor we need to read the corresponding calibration data from the eFuse and pass it to the SAR ADC registers. If the temperature sensor is not calibrated (the eFuse data contains a bit for this) then the driver will only register the iio_chan_spec's for voltage measurements. This only enables the temperature sensor for the Meson8 SoC. Meson8b and Meson8m2 SoCs can be supported in the future as well but we first need a way to pass the fifth TSC (temperature sensor coefficient) bit to the HHI register area (apart from that the infrastructure as already implemented for Meson8 can be used). On the 64-bit SoCs (GXBB, GXL and GXM) the temperature sensor inside SAR ADC is firmware-controlled (by BL30, we can simply use the SCPI hwmon driver to get the chip temperature). To keep the devicetree interface backwards compatible we simply skip the temperature sensor initialization if no eFuse nvmem cell is passed via devicetree. The public documentation for the SAR ADC IP block does not explain how to use the registers to read the temperature. The logic from this patch is based on reading and understanding Amlogic's GPL kernel sources. Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
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Martin Blumenstingl authored
The 32-bit Meson8 SoC can use the SAR ADC to read the chip temperature. This requires setting the correct TSC (temperature sensor coefficient), which is programmed into the eFuse during the manufacturing process. Meson8b and Meson8m2 are not supported yet because they have a 5-bit TSC and only the first four bits are stored inside the SAR ADC registers. Signed-off-by:
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Matheus Tavares authored
This patch adds a channel type check at the beginning of the ad2s90_read_raw function. Since ad2s90 has only one channel, it just checks if the given channel is the expected one and if not, return -EINVAL. Signed-off-by:
Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by:
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Victor Colombo authored
This patch adds the IIO_CHAN_INFO_SCALE mask to ad2s90_chan and implements the relative read behavior at ad2s90_read_raw. Signed-off-by:
Victor Colombo <victorcolombo@gmail.com> Signed-off-by:
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Matheus Tavares authored
Previously, devm_iio_device_register was being called before the spi_setup call and the spi_device's max_speed_hz and mode assignments. This could lead to a race condition since the driver was still being set up after it was already made ready to use. To fix it, this patch moves the device registration to the end of ad2s90_probe. Signed-off-by:
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Matheus Tavares authored
This patch removes an initial assignment to the variable ret at probe, that was always overwritten. Signed-off-by:
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Matheus Tavares authored
Previously, ad2s90_probe ignored the return code from spi_setup, not handling its possible failure. This patch makes ad2s90_probe check if the code is an error code and, if so, do the following: - Call dev_err with an appropriate error message. - Return the spi_setup's error code. Note: The 'return ret' statement could be out of the 'if' block, but this whole block will be moved up in the function in the patch: 'staging:iio:ad2s90: Move device registration to the end of probe'. Signed-off-by:
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