Re: [PATCH v7 4/5] iio: trigger: Introduce IIO hrtimer based trigger

From: Vladimir Barinov
Date: Wed Sep 02 2015 - 08:16:50 EST

Hi Lars,

On 31.08.2015 17:57, Lars-Peter Clausen wrote:
On 08/17/2015 02:45 PM, Vladimir Barinov wrote:
Hello Daniel,

I've verified that your hrtimer trigger works.

I have minor suggestions.

Will not it be useful to have ability to stop/start hrtimer polling
not only during attach/detach trigger.

f.e. writing 0 to sampling_frequency will hrtimer_cancel
and writing any valid frequency will hrtimer_start.
What's the use case for this?
Setting sampling frequency to 0 Hz.

I do agree that 0Hz is meaningless and the same effect
is achieved by removing trigger from iio device,
but having 0 Hz frequency could probably be more consecutive
for this trigger instead of returning EINVAL.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at