=========== HW consumer =========== An IIO device can be directly connected to another device in hardware. in this case the buffers between IIO provider and IIO consumer are handled by hardware. The Industrial I/O HW consumer offers a way to bond these IIO devices without software buffer for data. The implementation can be found under :file:`drivers/iio/buffer/hw-consumer.c` * struct :c:type:`iio_hw_consumer` — Hardware consumer structure * :c:func:`iio_hw_consumer_alloc` — Allocate IIO hardware consumer * :c:func:`iio_hw_consumer_free` — Free IIO hardware consumer * :c:func:`iio_hw_consumer_enable` — Enable IIO hardware consumer * :c:func:`iio_hw_consumer_disable` — Disable IIO hardware consumer HW consumer setup ================= As standard IIO device the implementation is based on IIO provider/consumer. A typical IIO HW consumer setup looks like this:: static struct iio_hw_consumer *hwc; static const struct iio_info adc_info = { .read_raw = adc_read_raw, }; static int adc_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { ret = iio_hw_consumer_enable(hwc); /* Acquire data */ ret = iio_hw_consumer_disable(hwc); } static int adc_probe(struct platform_device *pdev) { hwc = devm_iio_hw_consumer_alloc(&iio->dev); } More details ============ .. kernel-doc:: include/linux/iio/hw-consumer.h .. kernel-doc:: drivers/iio/buffer/industrialio-hw-consumer.c :export: