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@xxxxxxxxxx>
Signed-off-by: Karol Wrona <k.wrona@xxxxxxxxxxx>
---
drivers/iio/industrialio-buffer.c | 2 ++
include/linux/iio/iio.h | 6 ++++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index f971f79..15e6de3 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -680,6 +680,8 @@ 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;
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 3642ce7..55e63fd 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -284,10 +284,11 @@ static inline s64 iio_get_time_ns(void)
/* Device operating modes */
#define INDIO_DIRECT_MODE 0x01
#define INDIO_BUFFER_TRIGGERED 0x02
+#define INDIO_BUFFER_SOFTWARE 0x04
#define INDIO_BUFFER_HARDWARE 0x08
#define INDIO_ALL_BUFFER_MODES \
- (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE)
+ (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE)
#define INDIO_MAX_RAW_ELEMENTS 4
@@ -591,7 +592,8 @@ void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig);
static inline bool iio_buffer_enabled(struct iio_dev *indio_dev)
{
return indio_dev->currentmode
- & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE);
+ & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
+ INDIO_BUFFER_SOFTWARE);
}
/**
--
1.7.9.5
--
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