forked from Minki/linux
2d6ca60f32
Add a generic fully device independent DMA buffer implementation that uses the DMAegnine framework to perform the DMA transfers. This can be used by converter drivers that whish to provide a DMA buffer for converters that are connected to a DMA core that implements the DMAengine API. Apart from allocating the buffer using iio_dmaengine_buffer_alloc() and freeing it using iio_dmaengine_buffer_free() no additional converter driver specific code is required when using this DMA buffer implementation. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
#
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# Industrial I/O generic buffer implementations
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#
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# When adding new entries keep the list in alphabetical order
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config IIO_BUFFER_CB
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tristate "IIO callback buffer used for push in-kernel interfaces"
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help
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Should be selected by any drivers that do in-kernel push
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usage. That is, those where the data is pushed to the consumer.
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config IIO_BUFFER_DMA
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tristate
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help
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Provides the generic IIO DMA buffer infrastructure that can be used by
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drivers for devices with DMA support to implement the IIO buffer.
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Should be selected by drivers that want to use the generic DMA buffer
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infrastructure.
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config IIO_BUFFER_DMAENGINE
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tristate
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select IIO_BUFFER_DMA
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help
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Provides a bonding of the generic IIO DMA buffer infrastructure with the
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DMAengine framework. This can be used by converter drivers with a DMA port
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connected to an external DMA controller which is supported by the
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DMAengine framework.
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Should be selected by drivers that want to use this functionality.
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config IIO_KFIFO_BUF
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tristate "Industrial I/O buffering based on kfifo"
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help
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A simple fifo based on kfifo. Note that this currently provides
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no buffer events so it is up to userspace to work out how
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often to read from the buffer.
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config IIO_TRIGGERED_BUFFER
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tristate
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select IIO_TRIGGER
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select IIO_KFIFO_BUF
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help
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Provides helper functions for setting up triggered buffers.
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