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79f24971b4
Add a new devm_iio_dmaengine_buffer_setup_with_handle() function to handle cases where the DMA channel is managed by the caller rather than being requested and released by the iio_dmaengine module. Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-9-e48a489be48c@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright 2014-2015 Analog Devices Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*/
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#ifndef __IIO_DMAENGINE_H__
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#define __IIO_DMAENGINE_H__
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#include <linux/iio/buffer.h>
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struct iio_dev;
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struct device;
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struct dma_chan;
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void iio_dmaengine_buffer_teardown(struct iio_buffer *buffer);
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struct iio_buffer *iio_dmaengine_buffer_setup_ext(struct device *dev,
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struct iio_dev *indio_dev,
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const char *channel,
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enum iio_buffer_direction dir);
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#define iio_dmaengine_buffer_setup(dev, indio_dev, channel) \
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iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, \
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IIO_BUFFER_DIRECTION_IN)
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int devm_iio_dmaengine_buffer_setup_ext(struct device *dev,
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struct iio_dev *indio_dev,
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const char *channel,
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enum iio_buffer_direction dir);
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int devm_iio_dmaengine_buffer_setup_with_handle(struct device *dev,
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struct iio_dev *indio_dev,
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struct dma_chan *chan,
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enum iio_buffer_direction dir);
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#define devm_iio_dmaengine_buffer_setup(dev, indio_dev, channel) \
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devm_iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, \
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IIO_BUFFER_DIRECTION_IN)
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#endif
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