1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* The industrial I/O core - generic buffer interfaces. 3 * 4 * Copyright (c) 2008 Jonathan Cameron 5 */ 6 7 #ifndef _IIO_BUFFER_GENERIC_H_ 8 #define _IIO_BUFFER_GENERIC_H_ 9 #include <linux/sysfs.h> 10 #include <linux/iio/iio.h> 11 12 struct iio_buffer; 13 14 int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); 15 16 /** 17 * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers 18 * @indio_dev: iio_dev structure for device. 19 * @data: sample data 20 * @timestamp: timestamp for the sample data 21 * 22 * Pushes data to the IIO device's buffers. If timestamps are enabled for the 23 * device the function will store the supplied timestamp as the last element in 24 * the sample data buffer before pushing it to the device buffers. The sample 25 * data buffer needs to be large enough to hold the additional timestamp 26 * (usually the buffer should be indio->scan_bytes bytes large). 27 * 28 * Returns 0 on success, a negative error code otherwise. 29 */ iio_push_to_buffers_with_timestamp(struct iio_dev * indio_dev,void * data,int64_t timestamp)30static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, 31 void *data, int64_t timestamp) 32 { 33 if (indio_dev->scan_timestamp) { 34 size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1; 35 ((int64_t *)data)[ts_offset] = timestamp; 36 } 37 38 return iio_push_to_buffers(indio_dev, data); 39 } 40 41 bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, 42 const unsigned long *mask); 43 44 int iio_device_attach_buffer(struct iio_dev *indio_dev, 45 struct iio_buffer *buffer); 46 47 #endif /* _IIO_BUFFER_GENERIC_H_ */ 48