1 files changed, 58 insertions, 0 deletions
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
new file mode 100644
index 000000000..418b1307d
--- /dev/null
+++ b/include/linux/iio/buffer.h
@@ -0,0 +1,58 @@
+/* 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
+ *
+ * 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);
+}
+
+int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
+					  const void *data, size_t data_sz,
+					  int64_t 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_ */