[alsa-devel] [PATCH 1/2][RFC] dmaengine: rcar-audmapp: calculate chcr via src/dst addr

[Kuninori Morimoto]

Hi Geert, again

> > >> Morimoto-san: Are the base addresses configured in DT?
> > >> I did a quick search for 0xec300000, 0xec320000, 0xec40000,
> > >> 0xec420000, and 0xec000000,  and couldn't find them in DT, only in
> > >> source code (comments). They must come from somewhere?
> > >> Note that I didn't follow the sound binding discussions that closely.
> > >
> > > This base addresses are specified from sound driver.
> > >  - sound driver specifies src/dst address by DMAEngine API
> > 
> > From the rcar_sound node? That one has 0xec500000 as the base address.
> 
> Thank you. I double checked, and remembered.
> This is a littile bit confusable.
> 
> FIFO address 1) for CPU 2) for Audio DMAC 3) for Audio DMAC peri peri are different
> Sound driver is understanding all addresses.
> But, hmm..  no one call request_region() for these, is this your concern ?

Sorry for my confusable mail.
Yes, I need to add these address from DT. I fixup it in v2

0xec420000, 0xec320000 are listed on this patch, but these are not supported yet.