Hi Lars,
On 07.08.2015 16:45, Lars-Peter Clausen wrote:
Hi,
On 07/29/2015 02:57 PM, Vladimir Barinov wrote:
Support triggered events.
This is useful for chips that don't have their own interrupt sources.
It allows to use generic/standalone iio triggers for those drivers.
Thanks for the patch. Can you describe in more detail how
INDIO_EVENT_TRIGGERED differs from the INDIO_BUFFER_TRIGGERED. By just
looking at the source code I don't understand quite why it is necessary.
This is needed for the case when iio buffer is not used and used only
iio event.
The difference to INDIO_BUFFER_TRIGGERED is that for triggered buffer
the trigger poll function is attached (using
iio_trigger_attach_poll_func) only in
industrialio-buffer.c using number of steps/conditions starting by
issuing 1 to buffer/enable sysfs path.
For chips that do not use iio buffer but use only iio events the
iio_trigger_attach_poll_func never called.
In case of using INDIO_BUFFER_TRIGGERED the poll func is
attached/detached via industrialio-buffer.c
In case of using INDIO_EVENT_TRIGGERED the poll func is
attached/detached via industrialio-trigger.c during set/change the
current trigger.
Regards,
Vladimir
Thanks,
- Lars
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