[alsa-devel] M-Audio Audiophile 192 (ice1724)'s broken spdif capture

[Pavel Hofman]

On 27.1.2013 16:49, Jonas Petersen wrote:
> in ap192_ak4114_init() of revo.c I see this:
> 
> ----
>     static const unsigned char ak4114_init_vals[] = {
>         AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
>         AK4114_DIF_I24I2S,
>         AK4114_TX1E,
>         AK4114_EFH_1024 | AK4114_DIT | AK4114_IPS(1),
>         0,
>         0
>     };
>     static const unsigned char ak4114_init_txcsb[] = {
>         0x41, 0x02, 0x2c, 0x00, 0x00
>     };
> ----
> 
> Something wrong here maybe?

These values look correct.

> 
> I noticed that the ak4114_init_vals array has 6 values but in
> ap192_ak4114_init() 7 values get written to ak4114.regmap.

Right, looks like a bug in snd_ak4114_create. Nevertheless the 7th reg
RCS0 is read-only, writing anything bogus should not affect the operation.

What does the ak4114 regs dump in /proc/asound... dir of your
audiophile192 look like? The snd_ak4114_proc_regs_read method reads real
values from the regs.

> 
> @Pavel, btw. I also have an ESI Juli at . Spdif capture with this one does not
> work at all (as compared to "kind of working" with the Audiophile 192).

Interesting. I am pretty sure I tested the SPDIF input of Juli quite
extensively. It even reported the incoming samplerate correctly. How did
you test it? Please list amixer contents and ak4114 regs here. Thanks.

Pavel.