On 03/07/2016 03:29 PM, Ludovic Desroches wrote: > The same channel can be used to perform a signed or an unsigned > conversion. Add a new infomask element to be able to select the type of > conversion wanted: a raw one or a signed raw one. If this is the difference between offset binary and two's complement then it makes no sense to expose this at this level. Both are the same number just in a different representation and converting between them is cheap. A few magnitudes cheaper than reading the result over sysfs. So, if your device supports both, just pick one. For the buffered interface it may make sense to expose this, since the per sample overhead is a lot lower. But still doing the conversion should be cheap enough that it does not really matter. Before this is implemented I'd like to see hard performance numbers that this actually makes a difference. - Lars -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
