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Commit 03af03ad authored by Karol Wrona's avatar Karol Wrona Committed by Jonathan Cameron
Browse files

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: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarKarol Wrona <k.wrona@samsung.com>
Reviewed-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent ab80496a

drivers/iio/industrialio-buffer.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/iio/iio.h

+4 −2
Original line number Diff line number Diff line
@@ -286,10 +286,11 @@ 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
@@ -593,7 +594,8 @@ 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);

}



/**