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| author | Lars-Peter Clausen <lars@metafoo.de> | 2015-10-13 18:10:29 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-10-25 13:55:32 +0000 |
| commit | 2d6ca60f328450ff5c7802d0857d12e3711348ce (patch) | |
| tree | 1e3f39956aef3539819429946cbabf429a7fa1a1 /include | |
| parent | 670b19ae9bfdbcb4ce2c2ffb2ec1659a7f4a2074 (diff) | |
| download | linux-stable-2d6ca60f328450ff5c7802d0857d12e3711348ce.tar.gz linux-stable-2d6ca60f328450ff5c7802d0857d12e3711348ce.tar.bz2 linux-stable-2d6ca60f328450ff5c7802d0857d12e3711348ce.zip | |
iio: Add a DMAengine framework based buffer
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iio/buffer-dmaengine.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/iio/buffer-dmaengine.h b/include/linux/iio/buffer-dmaengine.h new file mode 100644 index 000000000000..5dcddf427bb0 --- /dev/null +++ b/include/linux/iio/buffer-dmaengine.h @@ -0,0 +1,18 @@ +/* + * Copyright 2014-2015 Analog Devices Inc. + * Author: Lars-Peter Clausen <lars@metafoo.de> + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __IIO_DMAENGINE_H__ +#define __IIO_DMAENGINE_H__ + +struct iio_buffer; +struct device; + +struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev, + const char *channel); +void iio_dmaengine_buffer_free(struct iio_buffer *buffer); + +#endif |