From: Karol Wrona Date: Wed, 7 Jan 2015 18:36:11 +0000 (+0100) Subject: iio: Add new operating mode for non triggered sw buffers X-Git-Tag: firefly_0821_release~176^2~2320^2~82^2~42 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=03af03ad7c6723e0f87568e4ffe66ceb9608bfe7;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Karol Wrona Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- 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; diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 878d861b0610..590202024857 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -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); } /**