[alsa-devel] [PATCH 1/2 v2] ASoC: nau8825: non-clock jack detection for power saving at standby

[John Hsu]

Hi,

On 5/24/2016 7:03 PM, Mark Brown wrote:
> On Tue, May 24, 2016 at 11:41:02AM +0800, John Hsu wrote:
>   
>> On 5/24/2016 1:04 AM, Mark Brown wrote:
>>     
>
>   
>>> The trouble is you'd have to do the configuration in userspace or do
>>> something like only do the DC offset correction if no other filter is
>>> configured.  TBH it's not unreasonable to suggest people should just
>>> configured a high pass filter if they're having issues, though it's a
>>> bit more work :(
>>>       
>
>   
>> Is it acceptable if we change our patch to do the DC offset correction
>> instead of general BIQ filter for the issue?
>>     
>
> That's probably going in the opposite direction to what I'd expect...
> I've not properly read the patch yet and there's quite a backlog from
> the merge window...
>   

I see. The configuration is an array of filter coefficients. Maybe
we'll make it with bytes type kcontrol for userspace. Is it suitable
for the case?