iio: Add new operating mode for non triggered sw buffers

There was a need for non triggered software buffer type.  It can be used when
triggered model does not fit and INDIO_BUFFER_HARDWARE causes confusion because
the data stream can be obtained not directly form hardware backend.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Karol Wrona <k.wrona@samsung.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 403b72878b0b..71333140d42c 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -639,6 +639,8 @@ static int __iio_update_buffers(struct iio_dev *indio_dev,
                 indio_dev->currentmode = INDIO_BUFFER_TRIGGERED;
         } else if (indio_dev->modes & INDIO_BUFFER_HARDWARE) {
                 indio_dev->currentmode = INDIO_BUFFER_HARDWARE;
+        } else if (indio_dev->modes & INDIO_BUFFER_SOFTWARE) {
+                indio_dev->currentmode = INDIO_BUFFER_SOFTWARE;
         } else { /* Should never be reached */
                 ret = -EINVAL;
                 goto error_run_postdisable;