Merge branch 'topic/iio' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-st-dfsdm
This commit is contained in:
Mark Brown
Коммит
4e9436fb84
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@ -0,0 +1,16 @@
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What: /sys/bus/iio/devices/iio:deviceX/in_voltage_spi_clk_freq
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KernelVersion: 4.14
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Contact: arnaud.pouliquen@st.com
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Description:
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For audio purpose only.
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Used by audio driver to set/get the spi input frequency.
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This is mandatory if DFSDM is slave on SPI bus, to
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provide information on the SPI clock frequency during runtime
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Notice that the SPI frequency should be a multiple of sample
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frequency to ensure the precision.
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if DFSDM input is SPI master
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Reading SPI clkout frequency,
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error on writing
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If DFSDM input is SPI Slave:
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Reading returns value previously set.
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Writing value before starting conversions.
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@ -0,0 +1,13 @@
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Device-Tree bindings for sigma delta modulator
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Required properties:
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- compatible: should be "ads1201", "sd-modulator". "sd-modulator" can be use
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as a generic SD modulator if modulator not specified in compatible list.
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- #io-channel-cells = <1>: See the IIO bindings section "IIO consumers".
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Example node:
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ads1202: adc@0 {
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compatible = "sd-modulator";
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#io-channel-cells = <1>;
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};
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@ -0,0 +1,128 @@
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STMicroelectronics STM32 DFSDM ADC device driver
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STM32 DFSDM ADC is a sigma delta analog-to-digital converter dedicated to
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interface external sigma delta modulators to STM32 micro controllers.
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It is mainly targeted for:
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- Sigma delta modulators (motor control, metering...)
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- PDM microphones (audio digital microphone)
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It features up to 8 serial digital interfaces (SPI or Manchester) and
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up to 4 filters on stm32h7.
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Each child node match with a filter instance.
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Contents of a STM32 DFSDM root node:
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------------------------------------
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Required properties:
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- compatible: Should be "st,stm32h7-dfsdm".
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- reg: Offset and length of the DFSDM block register set.
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- clocks: IP and serial interfaces clocking. Should be set according
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to rcc clock ID and "clock-names".
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- clock-names: Input clock name "dfsdm" must be defined,
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"audio" is optional. If defined CLKOUT is based on the audio
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clock, else "dfsdm" is used.
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- #interrupt-cells = <1>;
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- #address-cells = <1>;
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- #size-cells = <0>;
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Optional properties:
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- spi-max-frequency: Requested only for SPI master mode.
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SPI clock OUT frequency (Hz). This clock must be set according
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to "clock" property. Frequency must be a multiple of the rcc
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clock frequency. If not, SPI CLKOUT frequency will not be
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accurate.
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Contents of a STM32 DFSDM child nodes:
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--------------------------------------
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Required properties:
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- compatible: Must be:
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"st,stm32-dfsdm-adc" for sigma delta ADCs
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"st,stm32-dfsdm-dmic" for audio digital microphone.
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- reg: Specifies the DFSDM filter instance used.
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- interrupts: IRQ lines connected to each DFSDM filter instance.
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- st,adc-channels: List of single-ended channels muxed for this ADC.
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valid values:
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"st,stm32h7-dfsdm" compatibility: 0 to 7.
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- st,adc-channel-names: List of single-ended channel names.
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- st,filter-order: SinC filter order from 0 to 5.
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0: FastSinC
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[1-5]: order 1 to 5.
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For audio purpose it is recommended to use order 3 to 5.
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- #io-channel-cells = <1>: See the IIO bindings section "IIO consumers".
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Required properties for "st,stm32-dfsdm-adc" compatibility:
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- io-channels: From common IIO binding. Used to pipe external sigma delta
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modulator or internal ADC output to DFSDM channel.
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This is not required for "st,stm32-dfsdm-pdm" compatibility as
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PDM microphone is binded in Audio DT node.
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Required properties for "st,stm32-dfsdm-pdm" compatibility:
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- #sound-dai-cells: Must be set to 0.
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- dma: DMA controller phandle and DMA request line associated to the
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filter instance (specified by the field "reg")
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- dma-names: Must be "rx"
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Optional properties:
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- st,adc-channel-types: Single-ended channel input type.
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- "SPI_R": SPI with data on rising edge (default)
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- "SPI_F": SPI with data on falling edge
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- "MANCH_R": manchester codec, rising edge = logic 0
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- "MANCH_F": manchester codec, falling edge = logic 1
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- st,adc-channel-clk-src: Conversion clock source.
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- "CLKIN": external SPI clock (CLKIN x)
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- "CLKOUT": internal SPI clock (CLKOUT) (default)
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- "CLKOUT_F": internal SPI clock divided by 2 (falling edge).
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- "CLKOUT_R": internal SPI clock divided by 2 (rising edge).
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- st,adc-alt-channel: Must be defined if two sigma delta modulator are
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connected on same SPI input.
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If not set, channel n is connected to SPI input n.
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If set, channel n is connected to SPI input n + 1.
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- st,filter0-sync: Set to 1 to synchronize with DFSDM filter instance 0.
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Used for multi microphones synchronization.
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Example of a sigma delta adc connected on DFSDM SPI port 0
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and a pdm microphone connected on DFSDM SPI port 1:
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ads1202: simple_sd_adc@0 {
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compatible = "ads1202";
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#io-channel-cells = <1>;
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};
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dfsdm: dfsdm@40017000 {
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compatible = "st,stm32h7-dfsdm";
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reg = <0x40017000 0x400>;
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clocks = <&rcc DFSDM1_CK>;
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clock-names = "dfsdm";
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#interrupt-cells = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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dfsdm_adc0: filter@0 {
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compatible = "st,stm32-dfsdm-adc";
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#io-channel-cells = <1>;
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reg = <0>;
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interrupts = <110>;
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st,adc-channels = <0>;
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st,adc-channel-names = "sd_adc0";
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st,adc-channel-types = "SPI_F";
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st,adc-channel-clk-src = "CLKOUT";
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io-channels = <&ads1202 0>;
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st,filter-order = <3>;
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};
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dfsdm_pdm1: filter@1 {
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compatible = "st,stm32-dfsdm-dmic";
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reg = <1>;
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interrupts = <111>;
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dmas = <&dmamux1 102 0x400 0x00>;
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dma-names = "rx";
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st,adc-channels = <1>;
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st,adc-channel-names = "dmic1";
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st,adc-channel-types = "SPI_R";
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st,adc-channel-clk-src = "CLKOUT";
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st,filter-order = <5>;
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};
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}
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@ -0,0 +1,51 @@
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===========
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HW consumer
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===========
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An IIO device can be directly connected to another device in hardware. in this
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case the buffers between IIO provider and IIO consumer are handled by hardware.
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The Industrial I/O HW consumer offers a way to bond these IIO devices without
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software buffer for data. The implementation can be found under
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:file:`drivers/iio/buffer/hw-consumer.c`
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* struct :c:type:`iio_hw_consumer` — Hardware consumer structure
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* :c:func:`iio_hw_consumer_alloc` — Allocate IIO hardware consumer
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* :c:func:`iio_hw_consumer_free` — Free IIO hardware consumer
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* :c:func:`iio_hw_consumer_enable` — Enable IIO hardware consumer
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* :c:func:`iio_hw_consumer_disable` — Disable IIO hardware consumer
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HW consumer setup
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=================
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As standard IIO device the implementation is based on IIO provider/consumer.
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A typical IIO HW consumer setup looks like this::
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static struct iio_hw_consumer *hwc;
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static const struct iio_info adc_info = {
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.read_raw = adc_read_raw,
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};
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static int adc_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan, int *val,
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int *val2, long mask)
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{
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ret = iio_hw_consumer_enable(hwc);
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/* Acquire data */
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ret = iio_hw_consumer_disable(hwc);
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}
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static int adc_probe(struct platform_device *pdev)
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{
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hwc = devm_iio_hw_consumer_alloc(&iio->dev);
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}
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More details
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============
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.. kernel-doc:: include/linux/iio/hw-consumer.h
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.. kernel-doc:: drivers/iio/buffer/industrialio-hw-consumer.c
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:export:
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@ -15,3 +15,4 @@ Contents:
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buffers
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triggers
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triggered-buffers
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hw-consumer
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@ -629,6 +629,18 @@ config SPEAR_ADC
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To compile this driver as a module, choose M here: the
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module will be called spear_adc.
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config SD_ADC_MODULATOR
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tristate "Generic sigma delta modulator"
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depends on OF
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select IIO_BUFFER
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select IIO_TRIGGERED_BUFFER
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help
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Select this option to enables sigma delta modulator. This driver can
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support generic sigma delta modulators.
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This driver can also be built as a module. If so, the module
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will be called sd_adc_modulator.
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config STM32_ADC_CORE
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tristate "STMicroelectronics STM32 adc core"
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depends on ARCH_STM32 || COMPILE_TEST
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@ -656,6 +668,31 @@ config STM32_ADC
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This driver can also be built as a module. If so, the module
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will be called stm32-adc.
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config STM32_DFSDM_CORE
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tristate "STMicroelectronics STM32 DFSDM core"
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depends on (ARCH_STM32 && OF) || COMPILE_TEST
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select REGMAP
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select REGMAP_MMIO
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help
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Select this option to enable the driver for STMicroelectronics
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STM32 digital filter for sigma delta converter.
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This driver can also be built as a module. If so, the module
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will be called stm32-dfsdm-core.
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config STM32_DFSDM_ADC
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tristate "STMicroelectronics STM32 dfsdm adc"
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depends on (ARCH_STM32 && OF) || COMPILE_TEST
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select STM32_DFSDM_CORE
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select REGMAP_MMIO
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select IIO_BUFFER_HW_CONSUMER
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help
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Select this option to support ADCSigma delta modulator for
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STMicroelectronics STM32 digital filter for sigma delta converter.
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This driver can also be built as a module. If so, the module
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will be called stm32-dfsdm-adc.
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config STX104
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tristate "Apex Embedded Systems STX104 driver"
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depends on PC104 && X86 && ISA_BUS_API
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@ -64,6 +64,8 @@ obj-$(CONFIG_STX104) += stx104.o
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obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o
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obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o
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obj-$(CONFIG_STM32_ADC) += stm32-adc.o
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obj-$(CONFIG_STM32_DFSDM_CORE) += stm32-dfsdm-core.o
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obj-$(CONFIG_STM32_DFSDM_ADC) += stm32-dfsdm-adc.o
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obj-$(CONFIG_TI_ADC081C) += ti-adc081c.o
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obj-$(CONFIG_TI_ADC0832) += ti-adc0832.o
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obj-$(CONFIG_TI_ADC084S021) += ti-adc084s021.o
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@ -82,3 +84,4 @@ obj-$(CONFIG_VF610_ADC) += vf610_adc.o
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obj-$(CONFIG_VIPERBOARD_ADC) += viperboard_adc.o
|
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xilinx-xadc-y := xilinx-xadc-core.o xilinx-xadc-events.o
|
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obj-$(CONFIG_XILINX_XADC) += xilinx-xadc.o
|
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obj-$(CONFIG_SD_ADC_MODULATOR) += sd_adc_modulator.o
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@ -0,0 +1,68 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
|
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* Generic sigma delta modulator driver
|
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*
|
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* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
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* Author: Arnaud Pouliquen <arnaud.pouliquen@st.com>.
|
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*/
|
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|
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#include <linux/iio/iio.h>
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#include <linux/iio/triggered_buffer.h>
|
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#include <linux/module.h>
|
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#include <linux/of_device.h>
|
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|
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static const struct iio_info iio_sd_mod_iio_info;
|
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|
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static const struct iio_chan_spec iio_sd_mod_ch = {
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.type = IIO_VOLTAGE,
|
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.indexed = 1,
|
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.scan_type = {
|
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.sign = 'u',
|
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.realbits = 1,
|
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.shift = 0,
|
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},
|
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};
|
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|
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static int iio_sd_mod_probe(struct platform_device *pdev)
|
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{
|
||||
struct device *dev = &pdev->dev;
|
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struct iio_dev *iio;
|
||||
|
||||
iio = devm_iio_device_alloc(dev, 0);
|
||||
if (!iio)
|
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return -ENOMEM;
|
||||
|
||||
iio->dev.parent = dev;
|
||||
iio->dev.of_node = dev->of_node;
|
||||
iio->name = dev_name(dev);
|
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iio->info = &iio_sd_mod_iio_info;
|
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iio->modes = INDIO_BUFFER_HARDWARE;
|
||||
|
||||
iio->num_channels = 1;
|
||||
iio->channels = &iio_sd_mod_ch;
|
||||
|
||||
platform_set_drvdata(pdev, iio);
|
||||
|
||||
return devm_iio_device_register(&pdev->dev, iio);
|
||||
}
|
||||
|
||||
static const struct of_device_id sd_adc_of_match[] = {
|
||||
{ .compatible = "sd-modulator" },
|
||||
{ .compatible = "ads1201" },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, sd_adc_of_match);
|
||||
|
||||
static struct platform_driver iio_sd_mod_adc = {
|
||||
.driver = {
|
||||
.name = "iio_sd_adc_mod",
|
||||
.of_match_table = of_match_ptr(sd_adc_of_match),
|
||||
},
|
||||
.probe = iio_sd_mod_probe,
|
||||
};
|
||||
|
||||
module_platform_driver(iio_sd_mod_adc);
|
||||
|
||||
MODULE_DESCRIPTION("Basic sigma delta modulator");
|
||||
MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen@st.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Разница между файлами не показана из-за своего большого размера
Загрузить разницу
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@ -0,0 +1,309 @@
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// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* This file is part the core part STM32 DFSDM driver
|
||||
*
|
||||
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
||||
* Author(s): Arnaud Pouliquen <arnaud.pouliquen@st.com> for STMicroelectronics.
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/iio/sysfs.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#include "stm32-dfsdm.h"
|
||||
|
||||
struct stm32_dfsdm_dev_data {
|
||||
unsigned int num_filters;
|
||||
unsigned int num_channels;
|
||||
const struct regmap_config *regmap_cfg;
|
||||
};
|
||||
|
||||
#define STM32H7_DFSDM_NUM_FILTERS 4
|
||||
#define STM32H7_DFSDM_NUM_CHANNELS 8
|
||||
|
||||
static bool stm32_dfsdm_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
if (reg < DFSDM_FILTER_BASE_ADR)
|
||||
return false;
|
||||
|
||||
/*
|
||||
* Mask is done on register to avoid to list registers of all
|
||||
* filter instances.
|
||||
*/
|
||||
switch (reg & DFSDM_FILTER_REG_MASK) {
|
||||
case DFSDM_CR1(0) & DFSDM_FILTER_REG_MASK:
|
||||
case DFSDM_ISR(0) & DFSDM_FILTER_REG_MASK:
|
||||
case DFSDM_JDATAR(0) & DFSDM_FILTER_REG_MASK:
|
||||
case DFSDM_RDATAR(0) & DFSDM_FILTER_REG_MASK:
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static const struct regmap_config stm32h7_dfsdm_regmap_cfg = {
|
||||
.reg_bits = 32,
|
||||
.val_bits = 32,
|
||||
.reg_stride = sizeof(u32),
|
||||
.max_register = 0x2B8,
|
||||
.volatile_reg = stm32_dfsdm_volatile_reg,
|
||||
.fast_io = true,
|
||||
};
|
||||
|
||||
static const struct stm32_dfsdm_dev_data stm32h7_dfsdm_data = {
|
||||
.num_filters = STM32H7_DFSDM_NUM_FILTERS,
|
||||
.num_channels = STM32H7_DFSDM_NUM_CHANNELS,
|
||||
.regmap_cfg = &stm32h7_dfsdm_regmap_cfg,
|
||||
};
|
||||
|
||||
struct dfsdm_priv {
|
||||
struct platform_device *pdev; /* platform device */
|
||||
|
||||
struct stm32_dfsdm dfsdm; /* common data exported for all instances */
|
||||
|
||||
unsigned int spi_clk_out_div; /* SPI clkout divider value */
|
||||
atomic_t n_active_ch; /* number of current active channels */
|
||||
|
||||
struct clk *clk; /* DFSDM clock */
|
||||
struct clk *aclk; /* audio clock */
|
||||
};
|
||||
|
||||
/**
|
||||
* stm32_dfsdm_start_dfsdm - start global dfsdm interface.
|
||||
*
|
||||
* Enable interface if n_active_ch is not null.
|
||||
* @dfsdm: Handle used to retrieve dfsdm context.
|
||||
*/
|
||||
int stm32_dfsdm_start_dfsdm(struct stm32_dfsdm *dfsdm)
|
||||
{
|
||||
struct dfsdm_priv *priv = container_of(dfsdm, struct dfsdm_priv, dfsdm);
|
||||
struct device *dev = &priv->pdev->dev;
|
||||
unsigned int clk_div = priv->spi_clk_out_div;
|
||||
int ret;
|
||||
|
||||
if (atomic_inc_return(&priv->n_active_ch) == 1) {
|
||||
ret = clk_prepare_enable(priv->clk);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to start clock\n");
|
||||
goto error_ret;
|
||||
}
|
||||
if (priv->aclk) {
|
||||
ret = clk_prepare_enable(priv->aclk);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to start audio clock\n");
|
||||
goto disable_clk;
|
||||
}
|
||||
}
|
||||
|
||||
/* Output the SPI CLKOUT (if clk_div == 0 clock if OFF) */
|
||||
ret = regmap_update_bits(dfsdm->regmap, DFSDM_CHCFGR1(0),
|
||||
DFSDM_CHCFGR1_CKOUTDIV_MASK,
|
||||
DFSDM_CHCFGR1_CKOUTDIV(clk_div));
|
||||
if (ret < 0)
|
||||
goto disable_aclk;
|
||||
|
||||
/* Global enable of DFSDM interface */
|
||||
ret = regmap_update_bits(dfsdm->regmap, DFSDM_CHCFGR1(0),
|
||||
DFSDM_CHCFGR1_DFSDMEN_MASK,
|
||||
DFSDM_CHCFGR1_DFSDMEN(1));
|
||||
if (ret < 0)
|
||||
goto disable_aclk;
|
||||
}
|
||||
|
||||
dev_dbg(dev, "%s: n_active_ch %d\n", __func__,
|
||||
atomic_read(&priv->n_active_ch));
|
||||
|
||||
return 0;
|
||||
|
||||
disable_aclk:
|
||||
clk_disable_unprepare(priv->aclk);
|
||||
disable_clk:
|
||||
clk_disable_unprepare(priv->clk);
|
||||
|
||||
error_ret:
|
||||
atomic_dec(&priv->n_active_ch);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(stm32_dfsdm_start_dfsdm);
|
||||
|
||||
/**
|
||||
* stm32_dfsdm_stop_dfsdm - stop global DFSDM interface.
|
||||
*
|
||||
* Disable interface if n_active_ch is null
|
||||
* @dfsdm: Handle used to retrieve dfsdm context.
|
||||
*/
|
||||
int stm32_dfsdm_stop_dfsdm(struct stm32_dfsdm *dfsdm)
|
||||
{
|
||||
struct dfsdm_priv *priv = container_of(dfsdm, struct dfsdm_priv, dfsdm);
|
||||
int ret;
|
||||
|
||||
if (atomic_dec_and_test(&priv->n_active_ch)) {
|
||||
/* Global disable of DFSDM interface */
|
||||
ret = regmap_update_bits(dfsdm->regmap, DFSDM_CHCFGR1(0),
|
||||
DFSDM_CHCFGR1_DFSDMEN_MASK,
|
||||
DFSDM_CHCFGR1_DFSDMEN(0));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Stop SPI CLKOUT */
|
||||
ret = regmap_update_bits(dfsdm->regmap, DFSDM_CHCFGR1(0),
|
||||
DFSDM_CHCFGR1_CKOUTDIV_MASK,
|
||||
DFSDM_CHCFGR1_CKOUTDIV(0));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
clk_disable_unprepare(priv->clk);
|
||||
if (priv->aclk)
|
||||
clk_disable_unprepare(priv->aclk);
|
||||
}
|
||||
dev_dbg(&priv->pdev->dev, "%s: n_active_ch %d\n", __func__,
|
||||
atomic_read(&priv->n_active_ch));
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(stm32_dfsdm_stop_dfsdm);
|
||||
|
||||
static int stm32_dfsdm_parse_of(struct platform_device *pdev,
|
||||
struct dfsdm_priv *priv)
|
||||
{
|
||||
struct device_node *node = pdev->dev.of_node;
|
||||
struct resource *res;
|
||||
unsigned long clk_freq;
|
||||
unsigned int spi_freq, rem;
|
||||
int ret;
|
||||
|
||||
if (!node)
|
||||
return -EINVAL;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
dev_err(&pdev->dev, "Failed to get memory resource\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
priv->dfsdm.phys_base = res->start;
|
||||
priv->dfsdm.base = devm_ioremap_resource(&pdev->dev, res);
|
||||
|
||||
/*
|
||||
* "dfsdm" clock is mandatory for DFSDM peripheral clocking.
|
||||
* "dfsdm" or "audio" clocks can be used as source clock for
|
||||
* the SPI clock out signal and internal processing, depending
|
||||
* on use case.
|
||||
*/
|
||||
priv->clk = devm_clk_get(&pdev->dev, "dfsdm");
|
||||
if (IS_ERR(priv->clk)) {
|
||||
dev_err(&pdev->dev, "No stm32_dfsdm_clk clock found\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
priv->aclk = devm_clk_get(&pdev->dev, "audio");
|
||||
if (IS_ERR(priv->aclk))
|
||||
priv->aclk = NULL;
|
||||
|
||||
if (priv->aclk)
|
||||
clk_freq = clk_get_rate(priv->aclk);
|
||||
else
|
||||
clk_freq = clk_get_rate(priv->clk);
|
||||
|
||||
/* SPI clock out frequency */
|
||||
ret = of_property_read_u32(pdev->dev.of_node, "spi-max-frequency",
|
||||
&spi_freq);
|
||||
if (ret < 0) {
|
||||
/* No SPI master mode */
|
||||
return 0;
|
||||
}
|
||||
|
||||
priv->spi_clk_out_div = div_u64_rem(clk_freq, spi_freq, &rem) - 1;
|
||||
priv->dfsdm.spi_master_freq = spi_freq;
|
||||
|
||||
if (rem) {
|
||||
dev_warn(&pdev->dev, "SPI clock not accurate\n");
|
||||
dev_warn(&pdev->dev, "%ld = %d * %d + %d\n",
|
||||
clk_freq, spi_freq, priv->spi_clk_out_div + 1, rem);
|
||||
}
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
static const struct of_device_id stm32_dfsdm_of_match[] = {
|
||||
{
|
||||
.compatible = "st,stm32h7-dfsdm",
|
||||
.data = &stm32h7_dfsdm_data,
|
||||
},
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, stm32_dfsdm_of_match);
|
||||
|
||||
static int stm32_dfsdm_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct dfsdm_priv *priv;
|
||||
struct device_node *pnode = pdev->dev.of_node;
|
||||
const struct of_device_id *of_id;
|
||||
const struct stm32_dfsdm_dev_data *dev_data;
|
||||
struct stm32_dfsdm *dfsdm;
|
||||
int ret;
|
||||
|
||||
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->pdev = pdev;
|
||||
|
||||
of_id = of_match_node(stm32_dfsdm_of_match, pnode);
|
||||
if (!of_id->data) {
|
||||
dev_err(&pdev->dev, "Data associated to device is missing\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dev_data = (const struct stm32_dfsdm_dev_data *)of_id->data;
|
||||
dfsdm = &priv->dfsdm;
|
||||
dfsdm->fl_list = devm_kcalloc(&pdev->dev, dev_data->num_filters,
|
||||
sizeof(*dfsdm->fl_list), GFP_KERNEL);
|
||||
if (!dfsdm->fl_list)
|
||||
return -ENOMEM;
|
||||
|
||||
dfsdm->num_fls = dev_data->num_filters;
|
||||
dfsdm->ch_list = devm_kcalloc(&pdev->dev, dev_data->num_channels,
|
||||
sizeof(*dfsdm->ch_list),
|
||||
GFP_KERNEL);
|
||||
if (!dfsdm->ch_list)
|
||||
return -ENOMEM;
|
||||
dfsdm->num_chs = dev_data->num_channels;
|
||||
|
||||
ret = stm32_dfsdm_parse_of(pdev, priv);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
dfsdm->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "dfsdm",
|
||||
dfsdm->base,
|
||||
&stm32h7_dfsdm_regmap_cfg);
|
||||
if (IS_ERR(dfsdm->regmap)) {
|
||||
ret = PTR_ERR(dfsdm->regmap);
|
||||
dev_err(&pdev->dev, "%s: Failed to allocate regmap: %d\n",
|
||||
__func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, dfsdm);
|
||||
|
||||
return devm_of_platform_populate(&pdev->dev);
|
||||
}
|
||||
|
||||
static struct platform_driver stm32_dfsdm_driver = {
|
||||
.probe = stm32_dfsdm_probe,
|
||||
.driver = {
|
||||
.name = "stm32-dfsdm",
|
||||
.of_match_table = stm32_dfsdm_of_match,
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(stm32_dfsdm_driver);
|
||||
|
||||
MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen@st.com>");
|
||||
MODULE_DESCRIPTION("STMicroelectronics STM32 dfsdm driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -0,0 +1,310 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* This file is part of STM32 DFSDM driver
|
||||
*
|
||||
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
||||
* Author(s): Arnaud Pouliquen <arnaud.pouliquen@st.com>.
|
||||
*/
|
||||
|
||||
#ifndef MDF_STM32_DFSDM__H
|
||||
#define MDF_STM32_DFSDM__H
|
||||
|
||||
#include <linux/bitfield.h>
|
||||
|
||||
/*
|
||||
* STM32 DFSDM - global register map
|
||||
* ________________________________________________________
|
||||
* | Offset | Registers block |
|
||||
* --------------------------------------------------------
|
||||
* | 0x000 | CHANNEL 0 + COMMON CHANNEL FIELDS |
|
||||
* --------------------------------------------------------
|
||||
* | 0x020 | CHANNEL 1 |
|
||||
* --------------------------------------------------------
|
||||
* | ... | ..... |
|
||||
* --------------------------------------------------------
|
||||
* | 0x0E0 | CHANNEL 7 |
|
||||
* --------------------------------------------------------
|
||||
* | 0x100 | FILTER 0 + COMMON FILTER FIELDs |
|
||||
* --------------------------------------------------------
|
||||
* | 0x200 | FILTER 1 |
|
||||
* --------------------------------------------------------
|
||||
* | 0x300 | FILTER 2 |
|
||||
* --------------------------------------------------------
|
||||
* | 0x400 | FILTER 3 |
|
||||
* --------------------------------------------------------
|
||||
*/
|
||||
|
||||
/*
|
||||
* Channels register definitions
|
||||
*/
|
||||
#define DFSDM_CHCFGR1(y) ((y) * 0x20 + 0x00)
|
||||
#define DFSDM_CHCFGR2(y) ((y) * 0x20 + 0x04)
|
||||
#define DFSDM_AWSCDR(y) ((y) * 0x20 + 0x08)
|
||||
#define DFSDM_CHWDATR(y) ((y) * 0x20 + 0x0C)
|
||||
#define DFSDM_CHDATINR(y) ((y) * 0x20 + 0x10)
|
||||
|
||||
/* CHCFGR1: Channel configuration register 1 */
|
||||
#define DFSDM_CHCFGR1_SITP_MASK GENMASK(1, 0)
|
||||
#define DFSDM_CHCFGR1_SITP(v) FIELD_PREP(DFSDM_CHCFGR1_SITP_MASK, v)
|
||||
#define DFSDM_CHCFGR1_SPICKSEL_MASK GENMASK(3, 2)
|
||||
#define DFSDM_CHCFGR1_SPICKSEL(v) FIELD_PREP(DFSDM_CHCFGR1_SPICKSEL_MASK, v)
|
||||
#define DFSDM_CHCFGR1_SCDEN_MASK BIT(5)
|
||||
#define DFSDM_CHCFGR1_SCDEN(v) FIELD_PREP(DFSDM_CHCFGR1_SCDEN_MASK, v)
|
||||
#define DFSDM_CHCFGR1_CKABEN_MASK BIT(6)
|
||||
#define DFSDM_CHCFGR1_CKABEN(v) FIELD_PREP(DFSDM_CHCFGR1_CKABEN_MASK, v)
|
||||
#define DFSDM_CHCFGR1_CHEN_MASK BIT(7)
|
||||
#define DFSDM_CHCFGR1_CHEN(v) FIELD_PREP(DFSDM_CHCFGR1_CHEN_MASK, v)
|
||||
#define DFSDM_CHCFGR1_CHINSEL_MASK BIT(8)
|
||||
#define DFSDM_CHCFGR1_CHINSEL(v) FIELD_PREP(DFSDM_CHCFGR1_CHINSEL_MASK, v)
|
||||
#define DFSDM_CHCFGR1_DATMPX_MASK GENMASK(13, 12)
|
||||
#define DFSDM_CHCFGR1_DATMPX(v) FIELD_PREP(DFSDM_CHCFGR1_DATMPX_MASK, v)
|
||||
#define DFSDM_CHCFGR1_DATPACK_MASK GENMASK(15, 14)
|
||||
#define DFSDM_CHCFGR1_DATPACK(v) FIELD_PREP(DFSDM_CHCFGR1_DATPACK_MASK, v)
|
||||
#define DFSDM_CHCFGR1_CKOUTDIV_MASK GENMASK(23, 16)
|
||||
#define DFSDM_CHCFGR1_CKOUTDIV(v) FIELD_PREP(DFSDM_CHCFGR1_CKOUTDIV_MASK, v)
|
||||
#define DFSDM_CHCFGR1_CKOUTSRC_MASK BIT(30)
|
||||
#define DFSDM_CHCFGR1_CKOUTSRC(v) FIELD_PREP(DFSDM_CHCFGR1_CKOUTSRC_MASK, v)
|
||||
#define DFSDM_CHCFGR1_DFSDMEN_MASK BIT(31)
|
||||
#define DFSDM_CHCFGR1_DFSDMEN(v) FIELD_PREP(DFSDM_CHCFGR1_DFSDMEN_MASK, v)
|
||||
|
||||
/* CHCFGR2: Channel configuration register 2 */
|
||||
#define DFSDM_CHCFGR2_DTRBS_MASK GENMASK(7, 3)
|
||||
#define DFSDM_CHCFGR2_DTRBS(v) FIELD_PREP(DFSDM_CHCFGR2_DTRBS_MASK, v)
|
||||
#define DFSDM_CHCFGR2_OFFSET_MASK GENMASK(31, 8)
|
||||
#define DFSDM_CHCFGR2_OFFSET(v) FIELD_PREP(DFSDM_CHCFGR2_OFFSET_MASK, v)
|
||||
|
||||
/* AWSCDR: Channel analog watchdog and short circuit detector */
|
||||
#define DFSDM_AWSCDR_SCDT_MASK GENMASK(7, 0)
|
||||
#define DFSDM_AWSCDR_SCDT(v) FIELD_PREP(DFSDM_AWSCDR_SCDT_MASK, v)
|
||||
#define DFSDM_AWSCDR_BKSCD_MASK GENMASK(15, 12)
|
||||
#define DFSDM_AWSCDR_BKSCD(v) FIELD_PREP(DFSDM_AWSCDR_BKSCD_MASK, v)
|
||||
#define DFSDM_AWSCDR_AWFOSR_MASK GENMASK(20, 16)
|
||||
#define DFSDM_AWSCDR_AWFOSR(v) FIELD_PREP(DFSDM_AWSCDR_AWFOSR_MASK, v)
|
||||
#define DFSDM_AWSCDR_AWFORD_MASK GENMASK(23, 22)
|
||||
#define DFSDM_AWSCDR_AWFORD(v) FIELD_PREP(DFSDM_AWSCDR_AWFORD_MASK, v)
|
||||
|
||||
/*
|
||||
* Filters register definitions
|
||||
*/
|
||||
#define DFSDM_FILTER_BASE_ADR 0x100
|
||||
#define DFSDM_FILTER_REG_MASK 0x7F
|
||||
#define DFSDM_FILTER_X_BASE_ADR(x) ((x) * 0x80 + DFSDM_FILTER_BASE_ADR)
|
||||
|
||||
#define DFSDM_CR1(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x00)
|
||||
#define DFSDM_CR2(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x04)
|
||||
#define DFSDM_ISR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x08)
|
||||
#define DFSDM_ICR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x0C)
|
||||
#define DFSDM_JCHGR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x10)
|
||||
#define DFSDM_FCR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x14)
|
||||
#define DFSDM_JDATAR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x18)
|
||||
#define DFSDM_RDATAR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x1C)
|
||||
#define DFSDM_AWHTR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x20)
|
||||
#define DFSDM_AWLTR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x24)
|
||||
#define DFSDM_AWSR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x28)
|
||||
#define DFSDM_AWCFR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x2C)
|
||||
#define DFSDM_EXMAX(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x30)
|
||||
#define DFSDM_EXMIN(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x34)
|
||||
#define DFSDM_CNVTIMR(x) (DFSDM_FILTER_X_BASE_ADR(x) + 0x38)
|
||||
|
||||
/* CR1 Control register 1 */
|
||||
#define DFSDM_CR1_DFEN_MASK BIT(0)
|
||||
#define DFSDM_CR1_DFEN(v) FIELD_PREP(DFSDM_CR1_DFEN_MASK, v)
|
||||
#define DFSDM_CR1_JSWSTART_MASK BIT(1)
|
||||
#define DFSDM_CR1_JSWSTART(v) FIELD_PREP(DFSDM_CR1_JSWSTART_MASK, v)
|
||||
#define DFSDM_CR1_JSYNC_MASK BIT(3)
|
||||
#define DFSDM_CR1_JSYNC(v) FIELD_PREP(DFSDM_CR1_JSYNC_MASK, v)
|
||||
#define DFSDM_CR1_JSCAN_MASK BIT(4)
|
||||
#define DFSDM_CR1_JSCAN(v) FIELD_PREP(DFSDM_CR1_JSCAN_MASK, v)
|
||||
#define DFSDM_CR1_JDMAEN_MASK BIT(5)
|
||||
#define DFSDM_CR1_JDMAEN(v) FIELD_PREP(DFSDM_CR1_JDMAEN_MASK, v)
|
||||
#define DFSDM_CR1_JEXTSEL_MASK GENMASK(12, 8)
|
||||
#define DFSDM_CR1_JEXTSEL(v) FIELD_PREP(DFSDM_CR1_JEXTSEL_MASK, v)
|
||||
#define DFSDM_CR1_JEXTEN_MASK GENMASK(14, 13)
|
||||
#define DFSDM_CR1_JEXTEN(v) FIELD_PREP(DFSDM_CR1_JEXTEN_MASK, v)
|
||||
#define DFSDM_CR1_RSWSTART_MASK BIT(17)
|
||||
#define DFSDM_CR1_RSWSTART(v) FIELD_PREP(DFSDM_CR1_RSWSTART_MASK, v)
|
||||
#define DFSDM_CR1_RCONT_MASK BIT(18)
|
||||
#define DFSDM_CR1_RCONT(v) FIELD_PREP(DFSDM_CR1_RCONT_MASK, v)
|
||||
#define DFSDM_CR1_RSYNC_MASK BIT(19)
|
||||
#define DFSDM_CR1_RSYNC(v) FIELD_PREP(DFSDM_CR1_RSYNC_MASK, v)
|
||||
#define DFSDM_CR1_RDMAEN_MASK BIT(21)
|
||||
#define DFSDM_CR1_RDMAEN(v) FIELD_PREP(DFSDM_CR1_RDMAEN_MASK, v)
|
||||
#define DFSDM_CR1_RCH_MASK GENMASK(26, 24)
|
||||
#define DFSDM_CR1_RCH(v) FIELD_PREP(DFSDM_CR1_RCH_MASK, v)
|
||||
#define DFSDM_CR1_FAST_MASK BIT(29)
|
||||
#define DFSDM_CR1_FAST(v) FIELD_PREP(DFSDM_CR1_FAST_MASK, v)
|
||||
#define DFSDM_CR1_AWFSEL_MASK BIT(30)
|
||||
#define DFSDM_CR1_AWFSEL(v) FIELD_PREP(DFSDM_CR1_AWFSEL_MASK, v)
|
||||
|
||||
/* CR2: Control register 2 */
|
||||
#define DFSDM_CR2_IE_MASK GENMASK(6, 0)
|
||||
#define DFSDM_CR2_IE(v) FIELD_PREP(DFSDM_CR2_IE_MASK, v)
|
||||
#define DFSDM_CR2_JEOCIE_MASK BIT(0)
|
||||
#define DFSDM_CR2_JEOCIE(v) FIELD_PREP(DFSDM_CR2_JEOCIE_MASK, v)
|
||||
#define DFSDM_CR2_REOCIE_MASK BIT(1)
|
||||
#define DFSDM_CR2_REOCIE(v) FIELD_PREP(DFSDM_CR2_REOCIE_MASK, v)
|
||||
#define DFSDM_CR2_JOVRIE_MASK BIT(2)
|
||||
#define DFSDM_CR2_JOVRIE(v) FIELD_PREP(DFSDM_CR2_JOVRIE_MASK, v)
|
||||
#define DFSDM_CR2_ROVRIE_MASK BIT(3)
|
||||
#define DFSDM_CR2_ROVRIE(v) FIELD_PREP(DFSDM_CR2_ROVRIE_MASK, v)
|
||||
#define DFSDM_CR2_AWDIE_MASK BIT(4)
|
||||
#define DFSDM_CR2_AWDIE(v) FIELD_PREP(DFSDM_CR2_AWDIE_MASK, v)
|
||||
#define DFSDM_CR2_SCDIE_MASK BIT(5)
|
||||
#define DFSDM_CR2_SCDIE(v) FIELD_PREP(DFSDM_CR2_SCDIE_MASK, v)
|
||||
#define DFSDM_CR2_CKABIE_MASK BIT(6)
|
||||
#define DFSDM_CR2_CKABIE(v) FIELD_PREP(DFSDM_CR2_CKABIE_MASK, v)
|
||||
#define DFSDM_CR2_EXCH_MASK GENMASK(15, 8)
|
||||
#define DFSDM_CR2_EXCH(v) FIELD_PREP(DFSDM_CR2_EXCH_MASK, v)
|
||||
#define DFSDM_CR2_AWDCH_MASK GENMASK(23, 16)
|
||||
#define DFSDM_CR2_AWDCH(v) FIELD_PREP(DFSDM_CR2_AWDCH_MASK, v)
|
||||
|
||||
/* ISR: Interrupt status register */
|
||||
#define DFSDM_ISR_JEOCF_MASK BIT(0)
|
||||
#define DFSDM_ISR_JEOCF(v) FIELD_PREP(DFSDM_ISR_JEOCF_MASK, v)
|
||||
#define DFSDM_ISR_REOCF_MASK BIT(1)
|
||||
#define DFSDM_ISR_REOCF(v) FIELD_PREP(DFSDM_ISR_REOCF_MASK, v)
|
||||
#define DFSDM_ISR_JOVRF_MASK BIT(2)
|
||||
#define DFSDM_ISR_JOVRF(v) FIELD_PREP(DFSDM_ISR_JOVRF_MASK, v)
|
||||
#define DFSDM_ISR_ROVRF_MASK BIT(3)
|
||||
#define DFSDM_ISR_ROVRF(v) FIELD_PREP(DFSDM_ISR_ROVRF_MASK, v)
|
||||
#define DFSDM_ISR_AWDF_MASK BIT(4)
|
||||
#define DFSDM_ISR_AWDF(v) FIELD_PREP(DFSDM_ISR_AWDF_MASK, v)
|
||||
#define DFSDM_ISR_JCIP_MASK BIT(13)
|
||||
#define DFSDM_ISR_JCIP(v) FIELD_PREP(DFSDM_ISR_JCIP_MASK, v)
|
||||
#define DFSDM_ISR_RCIP_MASK BIT(14)
|
||||
#define DFSDM_ISR_RCIP(v) FIELD_PREP(DFSDM_ISR_RCIP, v)
|
||||
#define DFSDM_ISR_CKABF_MASK GENMASK(23, 16)
|
||||
#define DFSDM_ISR_CKABF(v) FIELD_PREP(DFSDM_ISR_CKABF_MASK, v)
|
||||
#define DFSDM_ISR_SCDF_MASK GENMASK(31, 24)
|
||||
#define DFSDM_ISR_SCDF(v) FIELD_PREP(DFSDM_ISR_SCDF_MASK, v)
|
||||
|
||||
/* ICR: Interrupt flag clear register */
|
||||
#define DFSDM_ICR_CLRJOVRF_MASK BIT(2)
|
||||
#define DFSDM_ICR_CLRJOVRF(v) FIELD_PREP(DFSDM_ICR_CLRJOVRF_MASK, v)
|
||||
#define DFSDM_ICR_CLRROVRF_MASK BIT(3)
|
||||
#define DFSDM_ICR_CLRROVRF(v) FIELD_PREP(DFSDM_ICR_CLRROVRF_MASK, v)
|
||||
#define DFSDM_ICR_CLRCKABF_MASK GENMASK(23, 16)
|
||||
#define DFSDM_ICR_CLRCKABF(v) FIELD_PREP(DFSDM_ICR_CLRCKABF_MASK, v)
|
||||
#define DFSDM_ICR_CLRCKABF_CH_MASK(y) BIT(16 + (y))
|
||||
#define DFSDM_ICR_CLRCKABF_CH(v, y) \
|
||||
(((v) << (16 + (y))) & DFSDM_ICR_CLRCKABF_CH_MASK(y))
|
||||
#define DFSDM_ICR_CLRSCDF_MASK GENMASK(31, 24)
|
||||
#define DFSDM_ICR_CLRSCDF(v) FIELD_PREP(DFSDM_ICR_CLRSCDF_MASK, v)
|
||||
#define DFSDM_ICR_CLRSCDF_CH_MASK(y) BIT(24 + (y))
|
||||
#define DFSDM_ICR_CLRSCDF_CH(v, y) \
|
||||
(((v) << (24 + (y))) & DFSDM_ICR_CLRSCDF_MASK(y))
|
||||
|
||||
/* FCR: Filter control register */
|
||||
#define DFSDM_FCR_IOSR_MASK GENMASK(7, 0)
|
||||
#define DFSDM_FCR_IOSR(v) FIELD_PREP(DFSDM_FCR_IOSR_MASK, v)
|
||||
#define DFSDM_FCR_FOSR_MASK GENMASK(25, 16)
|
||||
#define DFSDM_FCR_FOSR(v) FIELD_PREP(DFSDM_FCR_FOSR_MASK, v)
|
||||
#define DFSDM_FCR_FORD_MASK GENMASK(31, 29)
|
||||
#define DFSDM_FCR_FORD(v) FIELD_PREP(DFSDM_FCR_FORD_MASK, v)
|
||||
|
||||
/* RDATAR: Filter data register for regular channel */
|
||||
#define DFSDM_DATAR_CH_MASK GENMASK(2, 0)
|
||||
#define DFSDM_DATAR_DATA_OFFSET 8
|
||||
#define DFSDM_DATAR_DATA_MASK GENMASK(31, DFSDM_DATAR_DATA_OFFSET)
|
||||
|
||||
/* AWLTR: Filter analog watchdog low threshold register */
|
||||
#define DFSDM_AWLTR_BKAWL_MASK GENMASK(3, 0)
|
||||
#define DFSDM_AWLTR_BKAWL(v) FIELD_PREP(DFSDM_AWLTR_BKAWL_MASK, v)
|
||||
#define DFSDM_AWLTR_AWLT_MASK GENMASK(31, 8)
|
||||
#define DFSDM_AWLTR_AWLT(v) FIELD_PREP(DFSDM_AWLTR_AWLT_MASK, v)
|
||||
|
||||
/* AWHTR: Filter analog watchdog low threshold register */
|
||||
#define DFSDM_AWHTR_BKAWH_MASK GENMASK(3, 0)
|
||||
#define DFSDM_AWHTR_BKAWH(v) FIELD_PREP(DFSDM_AWHTR_BKAWH_MASK, v)
|
||||
#define DFSDM_AWHTR_AWHT_MASK GENMASK(31, 8)
|
||||
#define DFSDM_AWHTR_AWHT(v) FIELD_PREP(DFSDM_AWHTR_AWHT_MASK, v)
|
||||
|
||||
/* AWSR: Filter watchdog status register */
|
||||
#define DFSDM_AWSR_AWLTF_MASK GENMASK(7, 0)
|
||||
#define DFSDM_AWSR_AWLTF(v) FIELD_PREP(DFSDM_AWSR_AWLTF_MASK, v)
|
||||
#define DFSDM_AWSR_AWHTF_MASK GENMASK(15, 8)
|
||||
#define DFSDM_AWSR_AWHTF(v) FIELD_PREP(DFSDM_AWSR_AWHTF_MASK, v)
|
||||
|
||||
/* AWCFR: Filter watchdog status register */
|
||||
#define DFSDM_AWCFR_AWLTF_MASK GENMASK(7, 0)
|
||||
#define DFSDM_AWCFR_AWLTF(v) FIELD_PREP(DFSDM_AWCFR_AWLTF_MASK, v)
|
||||
#define DFSDM_AWCFR_AWHTF_MASK GENMASK(15, 8)
|
||||
#define DFSDM_AWCFR_AWHTF(v) FIELD_PREP(DFSDM_AWCFR_AWHTF_MASK, v)
|
||||
|
||||
/* DFSDM filter order */
|
||||
enum stm32_dfsdm_sinc_order {
|
||||
DFSDM_FASTSINC_ORDER, /* FastSinc filter type */
|
||||
DFSDM_SINC1_ORDER, /* Sinc 1 filter type */
|
||||
DFSDM_SINC2_ORDER, /* Sinc 2 filter type */
|
||||
DFSDM_SINC3_ORDER, /* Sinc 3 filter type */
|
||||
DFSDM_SINC4_ORDER, /* Sinc 4 filter type (N.A. for watchdog) */
|
||||
DFSDM_SINC5_ORDER, /* Sinc 5 filter type (N.A. for watchdog) */
|
||||
DFSDM_NB_SINC_ORDER,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct stm32_dfsdm_filter - structure relative to stm32 FDSDM filter
|
||||
* @iosr: integrator oversampling
|
||||
* @fosr: filter oversampling
|
||||
* @ford: filter order
|
||||
* @res: output sample resolution
|
||||
* @sync_mode: filter synchronized with filter 0
|
||||
* @fast: filter fast mode
|
||||
*/
|
||||
struct stm32_dfsdm_filter {
|
||||
unsigned int iosr;
|
||||
unsigned int fosr;
|
||||
enum stm32_dfsdm_sinc_order ford;
|
||||
u64 res;
|
||||
unsigned int sync_mode;
|
||||
unsigned int fast;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct stm32_dfsdm_channel - structure relative to stm32 FDSDM channel
|
||||
* @id: id of the channel
|
||||
* @type: interface type linked to stm32_dfsdm_chan_type
|
||||
* @src: interface type linked to stm32_dfsdm_chan_src
|
||||
* @alt_si: alternative serial input interface
|
||||
*/
|
||||
struct stm32_dfsdm_channel {
|
||||
unsigned int id;
|
||||
unsigned int type;
|
||||
unsigned int src;
|
||||
unsigned int alt_si;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct stm32_dfsdm - stm32 FDSDM driver common data (for all instances)
|
||||
* @base: control registers base cpu addr
|
||||
* @phys_base: DFSDM IP register physical address
|
||||
* @regmap: regmap for register read/write
|
||||
* @fl_list: filter resources list
|
||||
* @num_fls: number of filter resources available
|
||||
* @ch_list: channel resources list
|
||||
* @num_chs: number of channel resources available
|
||||
* @spi_master_freq: SPI clock out frequency
|
||||
*/
|
||||
struct stm32_dfsdm {
|
||||
void __iomem *base;
|
||||
phys_addr_t phys_base;
|
||||
struct regmap *regmap;
|
||||
struct stm32_dfsdm_filter *fl_list;
|
||||
unsigned int num_fls;
|
||||
struct stm32_dfsdm_channel *ch_list;
|
||||
unsigned int num_chs;
|
||||
unsigned int spi_master_freq;
|
||||
};
|
||||
|
||||
/* DFSDM channel serial spi clock source */
|
||||
enum stm32_dfsdm_spi_clk_src {
|
||||
DFSDM_CHANNEL_SPI_CLOCK_EXTERNAL,
|
||||
DFSDM_CHANNEL_SPI_CLOCK_INTERNAL,
|
||||
DFSDM_CHANNEL_SPI_CLOCK_INTERNAL_DIV2_FALLING,
|
||||
DFSDM_CHANNEL_SPI_CLOCK_INTERNAL_DIV2_RISING
|
||||
};
|
||||
|
||||
int stm32_dfsdm_start_dfsdm(struct stm32_dfsdm *dfsdm);
|
||||
int stm32_dfsdm_stop_dfsdm(struct stm32_dfsdm *dfsdm);
|
||||
|
||||
#endif
|
||||
|
|
@ -29,6 +29,16 @@ config IIO_BUFFER_DMAENGINE
|
|||
|
||||
Should be selected by drivers that want to use this functionality.
|
||||
|
||||
config IIO_BUFFER_HW_CONSUMER
|
||||
tristate "Industrial I/O HW buffering"
|
||||
help
|
||||
Provides a way to bonding when an IIO device has a direct connection
|
||||
to another device in hardware. In this case buffers for data transfers
|
||||
are handled by hardware.
|
||||
|
||||
Should be selected by drivers that want to use the generic Hw consumer
|
||||
interface.
|
||||
|
||||
config IIO_KFIFO_BUF
|
||||
tristate "Industrial I/O buffering based on kfifo"
|
||||
help
|
||||
|
|
|
|||
|
|
@ -7,5 +7,6 @@
|
|||
obj-$(CONFIG_IIO_BUFFER_CB) += industrialio-buffer-cb.o
|
||||
obj-$(CONFIG_IIO_BUFFER_DMA) += industrialio-buffer-dma.o
|
||||
obj-$(CONFIG_IIO_BUFFER_DMAENGINE) += industrialio-buffer-dmaengine.o
|
||||
obj-$(CONFIG_IIO_BUFFER_HW_CONSUMER) += industrialio-hw-consumer.o
|
||||
obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o
|
||||
obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o
|
||||
|
|
|
|||
|
|
@ -104,6 +104,17 @@ error_free_cb_buff:
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(iio_channel_get_all_cb);
|
||||
|
||||
int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buff,
|
||||
size_t watermark)
|
||||
{
|
||||
if (!watermark)
|
||||
return -EINVAL;
|
||||
cb_buff->buffer.watermark = watermark;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_channel_cb_set_buffer_watermark);
|
||||
|
||||
int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff)
|
||||
{
|
||||
return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,247 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright 2017 Analog Devices Inc.
|
||||
* Author: Lars-Peter Clausen <lars@metafoo.de>
|
||||
*/
|
||||
|
||||
#include <linux/err.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/iio/consumer.h>
|
||||
#include <linux/iio/hw-consumer.h>
|
||||
#include <linux/iio/buffer_impl.h>
|
||||
|
||||
/**
|
||||
* struct iio_hw_consumer - IIO hw consumer block
|
||||
* @buffers: hardware buffers list head.
|
||||
* @channels: IIO provider channels.
|
||||
*/
|
||||
struct iio_hw_consumer {
|
||||
struct list_head buffers;
|
||||
struct iio_channel *channels;
|
||||
};
|
||||
|
||||
struct hw_consumer_buffer {
|
||||
struct list_head head;
|
||||
struct iio_dev *indio_dev;
|
||||
struct iio_buffer buffer;
|
||||
long scan_mask[];
|
||||
};
|
||||
|
||||
static struct hw_consumer_buffer *iio_buffer_to_hw_consumer_buffer(
|
||||
struct iio_buffer *buffer)
|
||||
{
|
||||
return container_of(buffer, struct hw_consumer_buffer, buffer);
|
||||
}
|
||||
|
||||
static void iio_hw_buf_release(struct iio_buffer *buffer)
|
||||
{
|
||||
struct hw_consumer_buffer *hw_buf =
|
||||
iio_buffer_to_hw_consumer_buffer(buffer);
|
||||
kfree(hw_buf);
|
||||
}
|
||||
|
||||
static const struct iio_buffer_access_funcs iio_hw_buf_access = {
|
||||
.release = &iio_hw_buf_release,
|
||||
.modes = INDIO_BUFFER_HARDWARE,
|
||||
};
|
||||
|
||||
static struct hw_consumer_buffer *iio_hw_consumer_get_buffer(
|
||||
struct iio_hw_consumer *hwc, struct iio_dev *indio_dev)
|
||||
{
|
||||
size_t mask_size = BITS_TO_LONGS(indio_dev->masklength) * sizeof(long);
|
||||
struct hw_consumer_buffer *buf;
|
||||
|
||||
list_for_each_entry(buf, &hwc->buffers, head) {
|
||||
if (buf->indio_dev == indio_dev)
|
||||
return buf;
|
||||
}
|
||||
|
||||
buf = kzalloc(sizeof(*buf) + mask_size, GFP_KERNEL);
|
||||
if (!buf)
|
||||
return NULL;
|
||||
|
||||
buf->buffer.access = &iio_hw_buf_access;
|
||||
buf->indio_dev = indio_dev;
|
||||
buf->buffer.scan_mask = buf->scan_mask;
|
||||
|
||||
iio_buffer_init(&buf->buffer);
|
||||
list_add_tail(&buf->head, &hwc->buffers);
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
/**
|
||||
* iio_hw_consumer_alloc() - Allocate IIO hardware consumer
|
||||
* @dev: Pointer to consumer device.
|
||||
*
|
||||
* Returns a valid iio_hw_consumer on success or a ERR_PTR() on failure.
|
||||
*/
|
||||
struct iio_hw_consumer *iio_hw_consumer_alloc(struct device *dev)
|
||||
{
|
||||
struct hw_consumer_buffer *buf;
|
||||
struct iio_hw_consumer *hwc;
|
||||
struct iio_channel *chan;
|
||||
int ret;
|
||||
|
||||
hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
|
||||
if (!hwc)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
INIT_LIST_HEAD(&hwc->buffers);
|
||||
|
||||
hwc->channels = iio_channel_get_all(dev);
|
||||
if (IS_ERR(hwc->channels)) {
|
||||
ret = PTR_ERR(hwc->channels);
|
||||
goto err_free_hwc;
|
||||
}
|
||||
|
||||
chan = &hwc->channels[0];
|
||||
while (chan->indio_dev) {
|
||||
buf = iio_hw_consumer_get_buffer(hwc, chan->indio_dev);
|
||||
if (!buf) {
|
||||
ret = -ENOMEM;
|
||||
goto err_put_buffers;
|
||||
}
|
||||
set_bit(chan->channel->scan_index, buf->buffer.scan_mask);
|
||||
chan++;
|
||||
}
|
||||
|
||||
return hwc;
|
||||
|
||||
err_put_buffers:
|
||||
list_for_each_entry(buf, &hwc->buffers, head)
|
||||
iio_buffer_put(&buf->buffer);
|
||||
iio_channel_release_all(hwc->channels);
|
||||
err_free_hwc:
|
||||
kfree(hwc);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_hw_consumer_alloc);
|
||||
|
||||
/**
|
||||
* iio_hw_consumer_free() - Free IIO hardware consumer
|
||||
* @hwc: hw consumer to free.
|
||||
*/
|
||||
void iio_hw_consumer_free(struct iio_hw_consumer *hwc)
|
||||
{
|
||||
struct hw_consumer_buffer *buf, *n;
|
||||
|
||||
iio_channel_release_all(hwc->channels);
|
||||
list_for_each_entry_safe(buf, n, &hwc->buffers, head)
|
||||
iio_buffer_put(&buf->buffer);
|
||||
kfree(hwc);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_hw_consumer_free);
|
||||
|
||||
static void devm_iio_hw_consumer_release(struct device *dev, void *res)
|
||||
{
|
||||
iio_hw_consumer_free(*(struct iio_hw_consumer **)res);
|
||||
}
|
||||
|
||||
static int devm_iio_hw_consumer_match(struct device *dev, void *res, void *data)
|
||||
{
|
||||
struct iio_hw_consumer **r = res;
|
||||
|
||||
if (!r || !*r) {
|
||||
WARN_ON(!r || !*r);
|
||||
return 0;
|
||||
}
|
||||
return *r == data;
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_iio_hw_consumer_alloc - Resource-managed iio_hw_consumer_alloc()
|
||||
* @dev: Pointer to consumer device.
|
||||
*
|
||||
* Managed iio_hw_consumer_alloc. iio_hw_consumer allocated with this function
|
||||
* is automatically freed on driver detach.
|
||||
*
|
||||
* If an iio_hw_consumer allocated with this function needs to be freed
|
||||
* separately, devm_iio_hw_consumer_free() must be used.
|
||||
*
|
||||
* returns pointer to allocated iio_hw_consumer on success, NULL on failure.
|
||||
*/
|
||||
struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev)
|
||||
{
|
||||
struct iio_hw_consumer **ptr, *iio_hwc;
|
||||
|
||||
ptr = devres_alloc(devm_iio_hw_consumer_release, sizeof(*ptr),
|
||||
GFP_KERNEL);
|
||||
if (!ptr)
|
||||
return NULL;
|
||||
|
||||
iio_hwc = iio_hw_consumer_alloc(dev);
|
||||
if (IS_ERR(iio_hwc)) {
|
||||
devres_free(ptr);
|
||||
} else {
|
||||
*ptr = iio_hwc;
|
||||
devres_add(dev, ptr);
|
||||
}
|
||||
|
||||
return iio_hwc;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_iio_hw_consumer_alloc);
|
||||
|
||||
/**
|
||||
* devm_iio_hw_consumer_free - Resource-managed iio_hw_consumer_free()
|
||||
* @dev: Pointer to consumer device.
|
||||
* @hwc: iio_hw_consumer to free.
|
||||
*
|
||||
* Free iio_hw_consumer allocated with devm_iio_hw_consumer_alloc().
|
||||
*/
|
||||
void devm_iio_hw_consumer_free(struct device *dev, struct iio_hw_consumer *hwc)
|
||||
{
|
||||
int rc;
|
||||
|
||||
rc = devres_release(dev, devm_iio_hw_consumer_release,
|
||||
devm_iio_hw_consumer_match, hwc);
|
||||
WARN_ON(rc);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_iio_hw_consumer_free);
|
||||
|
||||
/**
|
||||
* iio_hw_consumer_enable() - Enable IIO hardware consumer
|
||||
* @hwc: iio_hw_consumer to enable.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
*/
|
||||
int iio_hw_consumer_enable(struct iio_hw_consumer *hwc)
|
||||
{
|
||||
struct hw_consumer_buffer *buf;
|
||||
int ret;
|
||||
|
||||
list_for_each_entry(buf, &hwc->buffers, head) {
|
||||
ret = iio_update_buffers(buf->indio_dev, &buf->buffer, NULL);
|
||||
if (ret)
|
||||
goto err_disable_buffers;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_disable_buffers:
|
||||
list_for_each_entry_continue_reverse(buf, &hwc->buffers, head)
|
||||
iio_update_buffers(buf->indio_dev, NULL, &buf->buffer);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_hw_consumer_enable);
|
||||
|
||||
/**
|
||||
* iio_hw_consumer_disable() - Disable IIO hardware consumer
|
||||
* @hwc: iio_hw_consumer to disable.
|
||||
*/
|
||||
void iio_hw_consumer_disable(struct iio_hw_consumer *hwc)
|
||||
{
|
||||
struct hw_consumer_buffer *buf;
|
||||
|
||||
list_for_each_entry(buf, &hwc->buffers, head)
|
||||
iio_update_buffers(buf->indio_dev, NULL, &buf->buffer);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_hw_consumer_disable);
|
||||
|
||||
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
||||
MODULE_DESCRIPTION("Hardware consumer buffer the IIO framework");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -664,8 +664,7 @@ err_unlock:
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(iio_convert_raw_to_processed);
|
||||
|
||||
static int iio_read_channel_attribute(struct iio_channel *chan,
|
||||
int *val, int *val2,
|
||||
int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
|
||||
enum iio_chan_info_enum attribute)
|
||||
{
|
||||
int ret;
|
||||
|
|
@ -682,6 +681,7 @@ err_unlock:
|
|||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_read_channel_attribute);
|
||||
|
||||
int iio_read_channel_offset(struct iio_channel *chan, int *val, int *val2)
|
||||
{
|
||||
|
|
@ -850,7 +850,8 @@ static int iio_channel_write(struct iio_channel *chan, int val, int val2,
|
|||
chan->channel, val, val2, info);
|
||||
}
|
||||
|
||||
int iio_write_channel_raw(struct iio_channel *chan, int val)
|
||||
int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
|
||||
enum iio_chan_info_enum attribute)
|
||||
{
|
||||
int ret;
|
||||
|
||||
|
|
@ -860,12 +861,18 @@ int iio_write_channel_raw(struct iio_channel *chan, int val)
|
|||
goto err_unlock;
|
||||
}
|
||||
|
||||
ret = iio_channel_write(chan, val, 0, IIO_CHAN_INFO_RAW);
|
||||
ret = iio_channel_write(chan, val, val2, attribute);
|
||||
err_unlock:
|
||||
mutex_unlock(&chan->indio_dev->info_exist_lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_write_channel_attribute);
|
||||
|
||||
int iio_write_channel_raw(struct iio_channel *chan, int val)
|
||||
{
|
||||
return iio_write_channel_attribute(chan, val, 0, IIO_CHAN_INFO_RAW);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iio_write_channel_raw);
|
||||
|
||||
unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,18 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* This file discribe the STM32 DFSDM IIO driver API for audio part
|
||||
*
|
||||
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
||||
* Author(s): Arnaud Pouliquen <arnaud.pouliquen@st.com>.
|
||||
*/
|
||||
|
||||
#ifndef STM32_DFSDM_ADC_H
|
||||
#define STM32_DFSDM_ADC_H
|
||||
|
||||
int stm32_dfsdm_get_buff_cb(struct iio_dev *iio_dev,
|
||||
int (*cb)(const void *data, size_t size,
|
||||
void *private),
|
||||
void *private);
|
||||
int stm32_dfsdm_release_buff_cb(struct iio_dev *iio_dev);
|
||||
|
||||
#endif
|
||||
|
|
@ -133,6 +133,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
|
|||
int (*cb)(const void *data,
|
||||
void *private),
|
||||
void *private);
|
||||
/**
|
||||
* iio_channel_cb_set_buffer_watermark() - set the buffer watermark.
|
||||
* @cb_buffer: The callback buffer from whom we want the channel
|
||||
* information.
|
||||
* @watermark: buffer watermark in bytes.
|
||||
*
|
||||
* This function allows to configure the buffer watermark.
|
||||
*/
|
||||
int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buffer,
|
||||
size_t watermark);
|
||||
|
||||
/**
|
||||
* iio_channel_release_all_cb() - release and unregister the callback.
|
||||
* @cb_buffer: The callback buffer that was allocated.
|
||||
|
|
@ -215,6 +226,32 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val);
|
|||
*/
|
||||
int iio_read_channel_processed(struct iio_channel *chan, int *val);
|
||||
|
||||
/**
|
||||
* iio_write_channel_attribute() - Write values to the device attribute.
|
||||
* @chan: The channel being queried.
|
||||
* @val: Value being written.
|
||||
* @val2: Value being written.val2 use depends on attribute type.
|
||||
* @attribute: info attribute to be read.
|
||||
*
|
||||
* Returns an error code or 0.
|
||||
*/
|
||||
int iio_write_channel_attribute(struct iio_channel *chan, int val,
|
||||
int val2, enum iio_chan_info_enum attribute);
|
||||
|
||||
/**
|
||||
* iio_read_channel_attribute() - Read values from the device attribute.
|
||||
* @chan: The channel being queried.
|
||||
* @val: Value being written.
|
||||
* @val2: Value being written.Val2 use depends on attribute type.
|
||||
* @attribute: info attribute to be written.
|
||||
*
|
||||
* Returns an error code if failed. Else returns a description of what is in val
|
||||
* and val2, such as IIO_VAL_INT_PLUS_MICRO telling us we have a value of val
|
||||
* + val2/1e6
|
||||
*/
|
||||
int iio_read_channel_attribute(struct iio_channel *chan, int *val,
|
||||
int *val2, enum iio_chan_info_enum attribute);
|
||||
|
||||
/**
|
||||
* iio_write_channel_raw() - write to a given channel
|
||||
* @chan: The channel being queried.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,21 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Industrial I/O in kernel hardware consumer interface
|
||||
*
|
||||
* Copyright 2017 Analog Devices Inc.
|
||||
* Author: Lars-Peter Clausen <lars@metafoo.de>
|
||||
*/
|
||||
|
||||
#ifndef LINUX_IIO_HW_CONSUMER_H
|
||||
#define LINUX_IIO_HW_CONSUMER_H
|
||||
|
||||
struct iio_hw_consumer;
|
||||
|
||||
struct iio_hw_consumer *iio_hw_consumer_alloc(struct device *dev);
|
||||
void iio_hw_consumer_free(struct iio_hw_consumer *hwc);
|
||||
struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev);
|
||||
void devm_iio_hw_consumer_free(struct device *dev, struct iio_hw_consumer *hwc);
|
||||
int iio_hw_consumer_enable(struct iio_hw_consumer *hwc);
|
||||
void iio_hw_consumer_disable(struct iio_hw_consumer *hwc);
|
||||
|
||||
#endif
|
||||
|
|
@ -20,34 +20,6 @@
|
|||
* Currently assumes nano seconds.
|
||||
*/
|
||||
|
||||
enum iio_chan_info_enum {
|
||||
IIO_CHAN_INFO_RAW = 0,
|
||||
IIO_CHAN_INFO_PROCESSED,
|
||||
IIO_CHAN_INFO_SCALE,
|
||||
IIO_CHAN_INFO_OFFSET,
|
||||
IIO_CHAN_INFO_CALIBSCALE,
|
||||
IIO_CHAN_INFO_CALIBBIAS,
|
||||
IIO_CHAN_INFO_PEAK,
|
||||
IIO_CHAN_INFO_PEAK_SCALE,
|
||||
IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW,
|
||||
IIO_CHAN_INFO_AVERAGE_RAW,
|
||||
IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY,
|
||||
IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY,
|
||||
IIO_CHAN_INFO_SAMP_FREQ,
|
||||
IIO_CHAN_INFO_FREQUENCY,
|
||||
IIO_CHAN_INFO_PHASE,
|
||||
IIO_CHAN_INFO_HARDWAREGAIN,
|
||||
IIO_CHAN_INFO_HYSTERESIS,
|
||||
IIO_CHAN_INFO_INT_TIME,
|
||||
IIO_CHAN_INFO_ENABLE,
|
||||
IIO_CHAN_INFO_CALIBHEIGHT,
|
||||
IIO_CHAN_INFO_CALIBWEIGHT,
|
||||
IIO_CHAN_INFO_DEBOUNCE_COUNT,
|
||||
IIO_CHAN_INFO_DEBOUNCE_TIME,
|
||||
IIO_CHAN_INFO_CALIBEMISSIVITY,
|
||||
IIO_CHAN_INFO_OVERSAMPLING_RATIO,
|
||||
};
|
||||
|
||||
enum iio_shared_by {
|
||||
IIO_SEPARATE,
|
||||
IIO_SHARED_BY_TYPE,
|
||||
|
|
|
|||
|
|
@ -34,4 +34,32 @@ enum iio_available_type {
|
|||
IIO_AVAIL_RANGE,
|
||||
};
|
||||
|
||||
enum iio_chan_info_enum {
|
||||
IIO_CHAN_INFO_RAW = 0,
|
||||
IIO_CHAN_INFO_PROCESSED,
|
||||
IIO_CHAN_INFO_SCALE,
|
||||
IIO_CHAN_INFO_OFFSET,
|
||||
IIO_CHAN_INFO_CALIBSCALE,
|
||||
IIO_CHAN_INFO_CALIBBIAS,
|
||||
IIO_CHAN_INFO_PEAK,
|
||||
IIO_CHAN_INFO_PEAK_SCALE,
|
||||
IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW,
|
||||
IIO_CHAN_INFO_AVERAGE_RAW,
|
||||
IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY,
|
||||
IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY,
|
||||
IIO_CHAN_INFO_SAMP_FREQ,
|
||||
IIO_CHAN_INFO_FREQUENCY,
|
||||
IIO_CHAN_INFO_PHASE,
|
||||
IIO_CHAN_INFO_HARDWAREGAIN,
|
||||
IIO_CHAN_INFO_HYSTERESIS,
|
||||
IIO_CHAN_INFO_INT_TIME,
|
||||
IIO_CHAN_INFO_ENABLE,
|
||||
IIO_CHAN_INFO_CALIBHEIGHT,
|
||||
IIO_CHAN_INFO_CALIBWEIGHT,
|
||||
IIO_CHAN_INFO_DEBOUNCE_COUNT,
|
||||
IIO_CHAN_INFO_DEBOUNCE_TIME,
|
||||
IIO_CHAN_INFO_CALIBEMISSIVITY,
|
||||
IIO_CHAN_INFO_OVERSAMPLING_RATIO,
|
||||
};
|
||||
|
||||
#endif /* _IIO_TYPES_H_ */
|
||||
|
|
|
|||
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