linux-imx/include/linux/iio/buffer-dmaengine.h
Paul Cercueil c1b9156658 iio: buffer-dmaengine: Support specifying buffer direction
Update the devm_iio_dmaengine_buffer_setup() function to support
specifying the buffer direction.

Update the iio_dmaengine_buffer_submit() function to handle input
buffers as well as output buffers.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240419-iio-backend-axi-dac-v4-4-5ca45b4de294@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-04-20 15:41:14 +01:00

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C

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright 2014-2015 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
*/
#ifndef __IIO_DMAENGINE_H__
#define __IIO_DMAENGINE_H__
#include <linux/iio/buffer.h>
struct iio_dev;
struct device;
void iio_dmaengine_buffer_free(struct iio_buffer *buffer);
struct iio_buffer *iio_dmaengine_buffer_setup_ext(struct device *dev,
struct iio_dev *indio_dev,
const char *channel,
enum iio_buffer_direction dir);
#define iio_dmaengine_buffer_setup(dev, indio_dev, channel) \
iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, \
IIO_BUFFER_DIRECTION_IN)
int devm_iio_dmaengine_buffer_setup_ext(struct device *dev,
struct iio_dev *indio_dev,
const char *channel,
enum iio_buffer_direction dir);
#define devm_iio_dmaengine_buffer_setup(dev, indio_dev, channel) \
devm_iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, \
IIO_BUFFER_DIRECTION_IN)
#endif