[alsa-devel] Correct value for AK4114_DIF2 constant?

Takashi Iwai tiwai at suse.de
Tue Mar 27 15:56:53 CEST 2007

At Mon, 26 Mar 2007 23:52:57 +0200 (CEST),
dustin at seznam.cz wrote:
> Hello,
> While going through AK4114 support I have hit the constant AK4114_DIF2 in ak4114.h . I would say its value should be (1<<6) according to AK4114 datasheet.
> This is current situation:
> #define AK4114_DIF2             (1<<5)  /* Audio Data Control */
> #define AK4114_DIF1             (1<<5)  /* Audio Data Control */
> #define AK4114_DIF0             (1<<4)  /* Audio Data Control */
> I think cards using this code should experience related problems. E.g. in juli.c and revo.c the constant 
> #define AK4114_DIF_I24I2S       (AK4114_DIF2|AK4114_DIF1|AK4114_DIF0) /* STDO: I2S;  LRCLK, BICK = Input */

Wow, thanks for spotting out.  Now fixed on HG tree.

> is used, intended to set output serial data mode to I2S/slave perhaps compatible with ICE1712/24. This may be causing problems mentioned in revo.c:
> #if 0
>  /* FIXME: ak4114 makes the sound much lower due to some confliction,
>  *        so let's disable it right now...
>  */
> #define BUILD_AK4114_AP192
> #endif

Right, this might be the cause.
Unfortunately, I have no AP192 board here to test.  Hopefully someone
can test it soon...

> I am trying to add support for SPDIF-IN of AudioTrak MI/ODI/O addon card (ice1724 + ak4114), hopefully this will be a little step forward.

Let me know if you have any advance.



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