iio: Add helper function for initializing triggered buffers

Add a helper function for executing the common tasks which are usually involved
in setting up a simple software ringbuffer. It will allocate the buffer,
allocate the pollfunc and register the buffer.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/iio/triggered_buffer.h b/include/linux/iio/triggered_buffer.h
new file mode 100644
index 000000000000..c378ebec605e
--- /dev/null
+++ b/include/linux/iio/triggered_buffer.h
@@ -0,0 +1,15 @@
+#ifndef _LINUX_IIO_TRIGGERED_BUFFER_H_
+#define _LINUX_IIO_TRIGGERED_BUFFER_H_
+
+#include <linux/interrupt.h>
+
+struct iio_dev;
+struct iio_buffer_setup_ops;
+
+int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
+        irqreturn_t (*pollfunc_bh)(int irq, void *p),
+        irqreturn_t (*pollfunc_th)(int irq, void *p),
+        const struct iio_buffer_setup_ops *setup_ops);
+void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev);
+
+#endif