bianbu-linux-6.6/include/linux/iio/buffer.h
Alexandru Ardelean 21232b4456 iio: buffer: remove iio_buffer_set_attrs() helper
The iio_buffer_set_attrs() is no longer used in the drivers, so it can be
removed now.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200929125949.69934-10-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-11-21 14:53:37 +00:00

47 lines
1.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/* The industrial I/O core - generic buffer interfaces.
*
* Copyright (c) 2008 Jonathan Cameron
*/
#ifndef _IIO_BUFFER_GENERIC_H_
#define _IIO_BUFFER_GENERIC_H_
#include <linux/sysfs.h>
#include <linux/iio/iio.h>
struct iio_buffer;
int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
/**
* iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers
* @indio_dev: iio_dev structure for device.
* @data: sample data
* @timestamp: timestamp for the sample data
*
* Pushes data to the IIO device's buffers. If timestamps are enabled for the
* device the function will store the supplied timestamp as the last element in
* the sample data buffer before pushing it to the device buffers. The sample
* data buffer needs to be large enough to hold the additional timestamp
* (usually the buffer should be indio->scan_bytes bytes large).
*
* Returns 0 on success, a negative error code otherwise.
*/
static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
void *data, int64_t timestamp)
{
if (indio_dev->scan_timestamp) {
size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1;
((int64_t *)data)[ts_offset] = timestamp;
}
return iio_push_to_buffers(indio_dev, data);
}
bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
const unsigned long *mask);
void iio_device_attach_buffer(struct iio_dev *indio_dev,
struct iio_buffer *buffer);
#endif /* _IIO_BUFFER_GENERIC_H_ */