Re: [PATCH] iio: add ds1077 programmable oscillator driver

[Lars-Peter Clausen <lars@metafoo.de>]

On 06/24/2013 07:47 PM, Peter Meerwald wrote:
> Hello,
> 
>> Hm, I wonder where we should draw the line between what should be
>> implemented as a IIO driver and what should be implemented as a clk API
>> driver. This one looks like it actually belongs into the clk framework.
> 
> several IIO drivers have overlap with other kernel subsystems

Which is not a necessarily good.

> 
> I think the 'line' depends on the intended use/application of the driver, 
> not so much on characteristics of the hardware; why do you think it 
> belongs to clk?

But the usecase might differ from board to board and that's when you get a
problem. One user wants a clk driver another a IIO driver.

> 
> the ds1077 is a small, separate chip which can generate a frequency; using 
> IIO I can easily control that frequency from userspace
> 
> clk seems to be targetted more at integrated clocksources that get 
> activated automatically when needed by other components (maybe I am wrong)


I think there is a userspace consumer for the clk API in the making.