[ALSA - driver 0001090]: Support for new Prodigy 7.1 LT

bugtrack
2005-07-21T00:01:08Z

Last Modified: 07-21-2005 02:01 CEST
======================================================================
Summary: Support for new Prodigy 7.1 LT
Description:
Could you please try to add support for the Audiotrak Prodigy 7.1 LT, as
far as I am aware this card is essentially the same as the Produgy 7.1 but
low profile and with a couple of physical changes such as no digital in.

ALSA does not detect the card currently and when I try to load the
snd-1724 module it fails with an EEPROM error.

I have tried compiling a new kernel with the subdevice id for the Prodigy
7.1 in aureon.h changed to correspond to my device (as detailed here for
another card
http://linux.derkeiler.com/Newsgroups/comp.os.linux.hardware/2004-10/0340.html).
Alsa then detects the card and I can load modules and change volumes in
alsamixer but I haven't been able to produce any sound.

Hopefully support will be easy to add as this card is almost exactly the
same as the Prodigy 7.1 (and Aureon Space etc.) which already have
support.

I would be very happy to give any further information needed.
======================================================================

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darins - 07-21-05 01:25
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You are correct about only needing to compile the ice1724 driver.

Up until I started having problems with sound, I have just been using
modules that were already built as part of the Fedora Core 3 distribution
(or updates to it).

Now I am going to just go straight to the source and compile my own
module, using the patches here; and start experimenting with that.

Looking at the list of components:
1. WM8770IFT --> this is the audio CODEC
2. 3CZ09FJ --> unknown right now, someone else mentioned a Texas logo, so
probaby a TI part--I used to work for TI, but so far I haven't found this
in their product list, I'm guessing it is a buffer, probably similar to
chip https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3; or maybe it is
the S/PDIF transcoder.
3. HC125A, PAU139 --> buffer IC, commodity part available from TI,
Motorola, ON, etc.
4. IL1117-33, 451 --> low-dropout voltage regulator--power conditioning
for the chip
5. ATMEL426, 24C02N --> 256x8 EEPROM
6. H17A, 316BJ --> from the photo and part number, I'd guess a transistor
or diode
7. NCO-3.3V, 49.152MHz, NTE --> oscillator that probably sources the
codec

I will look at my card tonight, but it does appear that they are using 6
amps (makes sense, 6 amplified channels). The parts in the diagram marked
"voltage regulator?" are definitely voltage regulators. Looks like one
resistor pack a little close to one, but not too bad.

I will focus on looking at the amps, figuring out how they are controlled,
where the gain setting comes from, etc. Basically how it is supposed to
work. Once I understand that, it shouldn't take long to figure out how to
command it to do what we want. I found the datasheet to the CODEC here:
http://www.profusionplc.com/static/images/data%20sheets/wm8770ift.pdf

Looks like it has its own amps with builtin digital pots, so this is where
all the volume control is really being done. If those other chips are
amps, then they probably just have a constant gain on them...maybe they
are with unity gain and just isolating signals--dunno at the moment. SPI
is probably being used to control this--the chip supports an SPI or CCB
(Sanyo-specific 3-wire bus) control bus. From what I can tell on the
Envy24 family (ice chip) it looks like a codec that supported a I2C
control bus would've been easier. Maybe they do control by bit-banging
some GPIOs, since there are plenty of them around?

Interesting. I'll let you know as soon as I have something.

----------------------------------------------------------------------
Demosthenes - 07-21-05 02:01
----------------------------------------------------------------------
It was I who reported the Texas logo but my number was 3AZ6D5J not the
number reported by baesyspem.

Issue History
Date Modified Username Field Change
======================================================================
05-06-05 17:34 Demosthenes New Issue
05-06-05 17:35 Demosthenes Distribution => Ubuntu (Hoary
Hedgehog)
05-06-05 17:35 Demosthenes Kernel Version => 2.6.10
05-06-05 22:44 ungod Note Added: 0004597
05-06-05 22:48 ungod Note Added: 0004598
05-07-05 01:38 Demosthenes Note Added: 0004600
05-07-05 01:47 Demosthenes Note Edited: 0004600
05-08-05 00:45 ungod Note Added: 0004608
05-08-05 17:30 Demosthenes Note Added: 0004610
05-08-05 17:39 ungod File Added: aureon-prodigy71lt-fix.diff

05-08-05 17:40 ungod Note Added: 0004611
05-08-05 19:09 Demosthenes Note Added: 0004612
05-08-05 19:12 Demosthenes Note Edited: 0004612
05-08-05 19:12 Demosthenes Note Edited: 0004612
05-08-05 20:08 ungod Note Added: 0004614
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05-10-05 09:36 ungod Note Added: 0004632
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05-14-05 15:18 Demosthenes Note Added: 0004658
05-14-05 20:24 Demosthenes Note Edited: 0004658
06-14-05 16:02 baesyspem Note Added: 0005018
06-14-05 16:03 baesyspem Issue Monitored: baesyspem
06-14-05 16:03 baesyspem Issue End Monitor: baesyspem
06-14-05 18:30 Demosthenes Note Added: 0005019
06-14-05 18:50 Demosthenes Note Edited: 0005019
06-14-05 21:26 ungod Note Added: 0005020
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06-30-05 01:03 ungod Note Added: 0005321
06-30-05 01:08 ungod Issue Monitored: ungod
06-30-05 01:46 baesyspem Note Added: 0005322
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06-30-05 21:21 ungod Note Added: 0005328
07-01-05 14:25 baesyspem Note Added: 0005333
07-01-05 16:09 baesyspem Note Added: 0005335
07-01-05 20:41 ungod File Added: aureon-prodigy71lt-fix2.diff

07-01-05 20:43 ungod Note Added: 0005339
07-01-05 22:08 Demosthenes Note Added: 0005341
07-01-05 22:46 ungod Note Added: 0005342
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07-01-05 23:10 Demosthenes Note Edited: 0005344
07-02-05 00:31 Demosthenes Note Edited: 0005344
07-02-05 03:29 ungod Note Added: 0005350
07-02-05 03:30 ungod File Added: prodigytest.tar.gz
07-02-05 03:37 ungod Note Edited: 0005350
07-02-05 16:50 Demosthenes Note Added: 0005353
07-02-05 18:10 Demosthenes Note Edited: 0005344
07-02-05 18:27 ungod Note Added: 0005354
07-02-05 18:36 Demosthenes Note Added: 0005355
07-02-05 20:20 ungod Note Added: 0005358
07-02-05 20:59 Demosthenes Note Added: 0005359
07-02-05 21:43 ungod File Added: peak.tar.gz
07-02-05 21:44 ungod Note Added: 0005360
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07-03-05 00:21 ungod Note Added: 0005363
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07-03-05 01:55 ungod Note Added: 0005365
07-03-05 02:46 Demosthenes Note Added: 0005366
07-03-05 02:47 Demosthenes Note Edited: 0005366
07-03-05 03:18 Demosthenes Note Added: 0005367
07-03-05 03:21 Demosthenes Note Edited: 0005367
07-03-05 11:35 ungod File Added: aureon-prodigy71lt-fix3.diff

07-03-05 11:47 ungod Note Added: 0005373
07-03-05 15:29 Demosthenes Note Added: 0005377
07-03-05 17:06 ungod Note Added: 0005379
07-04-05 14:34 miljan Issue Monitored: miljan
07-04-05 14:35 miljan Issue End Monitor: miljan
07-04-05 14:35 miljan Issue Monitored: miljan
07-06-05 19:19 Demosthenes Note Added: 0005392
07-08-05 22:52 ungod Note Added: 0005437
07-13-05 03:57 ungod Note Added: 0005457
07-13-05 03:58 ungod File Added: gpio.tar.gz
07-13-05 04:12 Demosthenes Note Added: 0005458
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07-13-05 05:00 Demosthenes Note Edited: 0005463
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07-14-05 13:19 ungod Note Added: 0005472
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07-15-05 15:08 ungod Note Added: 0005481
07-15-05 15:17 Demosthenes Note Added: 0005482
07-15-05 15:23 Demosthenes Note Edited: 0005474
07-20-05 18:01 darins Issue Monitored: darins
07-20-05 19:07 darins Note Added: 0005534
07-20-05 20:56 Demosthenes Note Added: 0005535
07-20-05 21:04 Demosthenes Note Edited: 0005535
07-21-05 01:25 darins Note Added: 0005537
07-21-05 02:01 Demosthenes Note Added: 0005538
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