[alsa-devel] [PATCH 1/4] ASoC: SAMSUNG: Modify I2S driver to support idma

[Sangbeom Kim]

On Thu, Jun 9, 2011 at 8:31 PM, Jassi Brar wrote:
> 
> >        case 2:
> > +               if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> > +                       i2s->dma_playback.dma_size = 4;
> > +               else
> > +                       i2s->dma_capture.dma_size = 4;
> > +               break;
> 
> Why do we need this ?
This code don't need here, I will delete it.
> 
> 
> 
> > +       case 1:
> > +               if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> > +                       i2s->dma_playback.dma_size = 2;
> > +               else
> > +                       i2s->dma_capture.dma_size = 2;
> 
> I2S doesn't support Mono.
Yes, But some application require mono recording.
It is needed mono recording support.

> 
> >  #define SAMSUNG_I2S_RCLKSRC_0  0
> >  #define SAMSUNG_I2S_RCLKSRC_1  1
> > -#define SAMSUNG_I2S_CDCLK              2
> > +#define SAMSUNG_I2S_CDCLK      2
> Please avoid inconsequential changes.
OK,

> The need of i2s.h is for machine drivers. Please move these register/bit
> definitions to a new header(say i2s-regs.h) if we have to share them with
> idma.c
OK, I2S register have to share with idma, I will create new header file.

> 
> > +#define msecs_to_loops(t)      (loops_per_jiffy / 1000 * HZ * t)
> > +
> > +#define ST_RUNNING             (1<<0)
> > +#define ST_OPENED              (1<<1)
> These should be moved to the c file that uses them.
I will move it.

Thanks,