Re: [alsa-devel] [PATCH 2/2] ASoC: atmel-pcm: use generic dmaengine framework

[Bo Shen <voice.shen@xxxxxxxxx>]

Hi Lars,

On 7/3/2013 16:08, Lars-Peter Clausen wrote:
> On 07/03/2013 09:57 AM, Bo Shen wrote:
> > Hi Lars,
> >
> > On 7/3/2013 15:36, Lars-Peter Clausen wrote:
> > > > > > +        slave_config->dst_addr = (dma_addr_t)ssc->phybase + SSC_THR;
> > > > > > > [...]
> > > > > > > > > +        slave_config->src_addr = (dma_addr_t)ssc->phybase + SSC_RHR;
> > > > > > >
> > > > > > > Change the type of phybase to dma_addr_t
> > > > >
> > > > > It should be:
> > > > > slave_config->dst_addr = (dma_addr_t)(ssc->phybase + SSC_THR);
> > > > > slave_config->src_addr = (dma_addr_t)(ssc->phybase + SSC_RHR);
> > > The type of phybase in the ssc_device struct should be changed from
> > > resource_size_t to dma_addr_t.
> >
> > Actually, the phybase in ssc_device structure is resource_size_t which used to
> > access the ssc device register.
> > Here, we use ssc register as dma source address or destination address, so we
> > convert it to dma_addr_t type. So, not need to change, am I right?
>
> Isn't 'regs' used to access the registers? As far as I can see phybase is only
> used in the audio DMA driver.

Thanks for point out this. I will change the phybase type from 
resource_size_t to dma_addr_t.

> - Lars

Best Regards,
Bo Shen
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