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iio: buffer-dma,adi-axi-adc: introduce devm_iio_dmaengine_buffer_setup()

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This change does a conversion of the devm_iio_dmaengine_buffer_alloc() to
devm_iio_dmaengine_buffer_setup(). This will allocate an IIO DMA buffer and
attach it to the IIO device, similar to devm_iio_triggered_buffer_setup()
(though the underlying code is different, the final logic is the same).

Since the only user of the devm_iio_dmaengine_buffer_alloc() was the
adi-axi-adc driver, this change does the replacement in a single go in the
driver.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-7-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean
2021-02-15 12:40:25 +02:00
committed by Jonathan Cameron
parent 99f6e8215b
commit a02c09e42b
4 changed files with 38 additions and 15 deletions
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7
include/linux/iio/buffer-dmaengine.h
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@@ -7,10 +7,11 @@
#ifndef __IIO_DMAENGINE_H__
#define __IIO_DMAENGINE_H__
struct iio_buffer;
struct iio_dev;
struct device;
struct iio_buffer *devm_iio_dmaengine_buffer_alloc(struct device *dev,
const char *channel);
int devm_iio_dmaengine_buffer_setup(struct device *dev,
struct iio_dev *indio_dev,
const char *channel);
#endif