include/linux/iio/buffer-dmaengine.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright 2014-2015 Analog Devices Inc.
   4  *  Author: Lars-Peter Clausen <lars@metafoo.de>
   5  */
   6
   7 #ifndef __IIO_DMAENGINE_H__
   8 #define __IIO_DMAENGINE_H__
   9
  10 #include <linux/iio/buffer.h>
  11
  12 struct iio_dev;
  13 struct device;
  14 struct dma_chan;
  15
  16 void iio_dmaengine_buffer_teardown(struct iio_buffer *buffer);
  17 struct iio_buffer *iio_dmaengine_buffer_setup_ext(struct device *dev,
  18                                                   struct iio_dev *indio_dev,
  19                                                   const char *channel,
  20                                                   enum iio_buffer_direction dir);
  21
  22 #define iio_dmaengine_buffer_setup(dev, indio_dev, channel)     \
  23         iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, \
  24                                        IIO_BUFFER_DIRECTION_IN)
  25
  26 int devm_iio_dmaengine_buffer_setup_ext(struct device *dev,
  27                                         struct iio_dev *indio_dev,
  28                                         const char *channel,
  29                                         enum iio_buffer_direction dir);
  30 int devm_iio_dmaengine_buffer_setup_with_handle(struct device *dev,
  31                                                 struct iio_dev *indio_dev,
  32                                                 struct dma_chan *chan,
  33                                                 enum iio_buffer_direction dir);
  34
  35 #define devm_iio_dmaengine_buffer_setup(dev, indio_dev, channel)        \
  36         devm_iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel,    \
  37                                             IIO_BUFFER_DIRECTION_IN)
  38
  39 #endif