At Thu, 01 Nov 2012 20:16:51 +0530, Vinod Koul wrote:
On Thu, 2012-11-01 at 14:25 +0000, Mark Brown wrote:
On Wed, Oct 31, 2012 at 07:37:31PM +0530, Vinod Koul wrote:
Is there any limitation on maximum number of controls we can have.
I had some platform side controls to represent DSP and adding them made some of codec controls to vanish. And looks like if I register these platform controls not all codec controls are visible in userpsace. Is there nay max limit I am hitting?
Not that I'm aware of beyond sizeof() type stuff which you're probably still a way away from. How are you listing the controls and are there any name collisons?
alsa_amixer -c"cardname" controls
Better to use alsactl for obtaining the list of raw control elements.
if there isn't anything in kernel which limits this, would there be something in alsa-lib to have this kind of behavior?
In most cases, such a problem is a driver bug, e.g. creating control elements conflicting with each other for the mixer abstraction.
Takashi