[alsa-devel] ice1724 - TerraTec PHASE 22 no MIDI ports get created

[Takashi Iwai]

At Mon, 25 Aug 2008 17:53:12 +0200,
=?UTF-8?Q?Vedran_Mileti=C4=87?= wrote:
> 
> Thanks a lot for your response, Pavel. You saved me from installing
> Windows to verify that my card isn't broken :-)
> 
> Still, I don't understand:
> 1) Why is in phase.c ICE_EEP2_SYSCONF set to 0x00? What do different
> values do here, and how do you know which is the correct value?

The MIDI support on VT172x was (still partly is) broken.
That's why many setups don't include it.

Also, it's possible that the original EEPROM value is so.
The Windows drivers tend to override everything with *.INI files.

> 2) When I looked up juli.c for 0x20, there is only:
> #define AK4114_ADDR             0x20            /* S/PDIF receiver */
> How come that 0x20 means MIDI?

0x20 is a bitmask.  juli has 0x2b there, so it's enabled.

> 3) How come that juli.c has 0x2b and prodigy192.c has 0x6a in
> ICE_EEP2_SYSCONF? Does that differ because of the "amount" of stuff on
> that board, or some other reason? Again, how did you find out which is
> the correct value to set here?

Check the datasheet of VT172x.  Or you can guess the meaning of each
bit via VT1724_CFG_* in envy24ht.h.

> 4) Does the fact that 0x2b and 0x6a are larger than 0x20 makes MIDI
> get created? Or is it something else entirely?

The size doesn't matter.  It's bit flags.


HTH,

Takashi

> 
> I apologize if my questions are not apropriate, but I have just
> started exploring the depths of low-level coding and I still have very
> basic understanding of stuff that is going around. Thanks for any
> help.
> 
> 2008/8/25 Pavel Hofman <pavel.hofman at insite.cz>:
> > Vedran Miletić wrote:
> >>
> >> Hi guys,
> >>
> >> There was "MIDI on ice1724" thread not-so-recently, and it had a patch
> >> attached. Changelog says that the patch was added to ALSA in 1.0.17.
> >>
> >> So I took out my dusty TerraTec PHASE 22 out of the closet (and
> >> removed the dust, of course :-) ), but I can't get MIDI to work there.
> >> Regardless of ALSA version (1.0.15 - 1.0.17, even 1.0.18rc1), I get no
> >> MIDI ports at all:
> >> vedran at kalopsia:~$ amidi -l
> >> Dir Device    Name
> >> vedran at kalopsia:~$
> >>
> >> Why don't MIDI ports get created? I tried looking at the source, but I
> >> couldn't figure out how this "creation of midi ports" happens (or
> >> doesn't happen, as in this case).
> >>
> >
> > See ice1724.c:snd_vt1724_probe line 2546:
> >
> > if (! c->no_mpu401) {
> >        if (ice->eeprom.data[ICE_EEP2_SYSCONF] & VT1724_CFG_MPU401) {
> >                        struct snd_rawmidi *rmidi;
> >
> >                        err = snd_rawmidi_new(card, "MIDI", 0, 0, 1, &rmidi);
> > ..................
> >
> >
> > The Phase cards in phase.c have no no_mpu401 defined BUT they do not have
> > the VT1724_CFG_MPU401 bit defined in their ICE_EEP2_SYSCONF eeprom byte. As
> > a result, the code creating midi device gets skipped.
> >
> > Take a look at juli.c and prodigy192c code (juli_eeprom[],
> > prodigy71_eeprom[]). They have the VT1724_CFG_MPU401 bit (0x20) set. You
> > should fix that by:
> >
> > --- a/pci/ice1712/phase.c
> > +++ b/pci/ice1712/phase.c
> > @@ -161,7 +161,8 @@ static int __devinit phase22_add_controls(struct
> > snd_ice1712
> >  }
> >
> >  static unsigned char phase22_eeprom[] __devinitdata = {
> > -       [ICE_EEP2_SYSCONF]     = 0x00,  /* 1xADC, 1xDACs */
> > +       [ICE_EEP2_SYSCONF]     = 0x00 | VT1724_CFG_MPU401,      /* 1xADC,
> > +                                                          1xDACs, mpu401 */
> >        [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
> >        [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit */
> >        [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
> >
> >
> >
> >
> > The same applies for phase28 if it offers midi.
> >
> > Regards,
> >
> > Pavel.
> >
> 
> 
> 
> -- 
> Vedran Miletić
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