Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jonathan Cameron |
119 |
52.42% |
13 |
43.33% |
| Lars-Peter Clausen |
63 |
27.75% |
5 |
16.67% |
| Mihail Chindris |
15 |
6.61% |
1 |
3.33% |
| David Lechner |
11 |
4.85% |
3 |
10.00% |
| Michael Hennerich |
5 |
2.20% |
2 |
6.67% |
| Vasileios Amoiridis |
4 |
1.76% |
1 |
3.33% |
| Barry Song |
3 |
1.32% |
1 |
3.33% |
| Manuel Stahl |
3 |
1.32% |
1 |
3.33% |
| Thomas Gleixner |
2 |
0.88% |
1 |
3.33% |
| Andy Shevchenko |
1 |
0.44% |
1 |
3.33% |
| Alexandru Ardelean |
1 |
0.44% |
1 |
3.33% |
| Total |
227 |
|
30 |
|
/* 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;
enum iio_buffer_direction {
IIO_BUFFER_DIRECTION_IN,
IIO_BUFFER_DIRECTION_OUT,
};
int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
int iio_pop_from_buffer(struct iio_buffer *buffer, 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
*
* DEPRECATED: Use iio_push_to_buffers_with_ts() instead.
*
* 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 (ACCESS_PRIVATE(indio_dev, scan_timestamp)) {
size_t ts_offset = ACCESS_PRIVATE(indio_dev, scan_timestamp_offset);
/*
* The size of indio_dev->scan_bytes is always aligned to the
* largest scan element's alignment (see iio_compute_scan_bytes()).
* So there may be padding after the timestamp. ts_offset contains
* the offset in bytes that was already computed for correctly
* aligning the timestamp.
*/
*(int64_t *)(data + ts_offset) = timestamp;
}
return iio_push_to_buffers(indio_dev, data);
}
/**
* iio_push_to_buffers_with_ts() - push data and timestamp to buffers
* @indio_dev: iio_dev structure for device.
* @data: Pointer to sample data buffer.
* @data_total_len: The size of @data in bytes.
* @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 at least indio->scan_bytes bytes large).
*
* Context: Any context.
* Return: 0 on success, a negative error code otherwise.
*/
static inline int iio_push_to_buffers_with_ts(struct iio_dev *indio_dev,
void *data, size_t data_total_len,
s64 timestamp)
{
if (unlikely(data_total_len < indio_dev->scan_bytes)) {
dev_err(&indio_dev->dev, "Undersized storage pushed to buffer\n");
return -ENOSPC;
}
return iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp);
}
int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
const void *data, size_t data_sz,
s64 timestamp);
bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
const unsigned long *mask);
int iio_device_attach_buffer(struct iio_dev *indio_dev,
struct iio_buffer *buffer);
#endif /* _IIO_BUFFER_GENERIC_H_ */