On Thu, Sep 10, 2015 at 10:31:04AM +0800, Wu, Songjun wrote:
On 9/9/2015 17:52, Mark Brown wrote:
Yes, that's what's going to end up happening but it's not how controls are expected to behave - applications will expect changing one control to leave others unaffected so it's better to return an error rather than change the other control.
If application change non EQ controls, the others will be unaffected. But the classD IP can only supports one EQ control at once, these three EQ controls point to the same register field, if application set a different EQ control, the error occurs, there will be many errors, it's not very reasonable to application. The best way I think is if application set one EQ control, the other EQ controls will change to 0dB, it's also consistent with fact.
There's no really good solutions here - this is why my initial suggestion was to have a single enumerated control.