mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
1.6 KiB
C
51 lines
1.6 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;
|
|
|
|
void iio_buffer_set_attrs(struct iio_buffer *buffer,
|
|
const struct attribute **attrs);
|
|
|
|
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_ */
|