1 /* The industrial I/O core - generic buffer interfaces. 2 * 3 * Copyright (c) 2008 Jonathan Cameron 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 */ 9 10 #ifndef _IIO_BUFFER_GENERIC_H_ 11 #define _IIO_BUFFER_GENERIC_H_ 12 #include <linux/sysfs.h> 13 #include <linux/iio/iio.h> 14 15 struct iio_buffer; 16 17 void iio_buffer_set_attrs(struct iio_buffer *buffer, 18 const struct attribute **attrs); 19 20 int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); 21 22 /** 23 * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers 24 * @indio_dev: iio_dev structure for device. 25 * @data: sample data 26 * @timestamp: timestamp for the sample data 27 * 28 * Pushes data to the IIO device's buffers. If timestamps are enabled for the 29 * device the function will store the supplied timestamp as the last element in 30 * the sample data buffer before pushing it to the device buffers. The sample 31 * data buffer needs to be large enough to hold the additional timestamp 32 * (usually the buffer should be indio->scan_bytes bytes large). 33 * 34 * Returns 0 on success, a negative error code otherwise. 35 */ 36 static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, 37 void *data, int64_t timestamp) 38 { 39 if (indio_dev->scan_timestamp) { 40 size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1; 41 ((int64_t *)data)[ts_offset] = timestamp; 42 } 43 44 return iio_push_to_buffers(indio_dev, data); 45 } 46 47 bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, 48 const unsigned long *mask); 49 50 void iio_device_attach_buffer(struct iio_dev *indio_dev, 51 struct iio_buffer *buffer); 52 53 #endif /* _IIO_BUFFER_GENERIC_H_ */ 54