Using Alsa for AD1981b on 9263

Using Alsa for AD1981b on 9263

[Shilpa Kedar Walvekar]

Hi,

I am using AT91SAM9263 evaluation kit with AD1981b codec. I want to use alsa to play and record audio on this kit.

I tried to install the alsa library, alsa-oss, alsa-util. Alsa driver was part of kernel (2.6.27). I did, ./configure && make && make install for library, oss and util. Now when I try to do aplay -l following happens:
aplay: device_list:223: no soundcards found...

Don't know what is happening. Am I missing any step? What else should be done?
Please help me asap.

Regards,
--Shilpa.

Re: Using Alsa for AD1981b on 9263

[Mark Brown]

On Tue, Jul 28, 2009 at 02:00:21PM +0530, Shilpa Kedar Walvekar wrote:

> I am using AT91SAM9263 evaluation kit with AD1981b codec. I want to use alsa to play and record audio on this kit.

> I tried to install the alsa library, alsa-oss, alsa-util. Alsa driver was part of kernel (2.6.27). I did, ./configure && make && make install for library, oss and util. Now when I try to do aplay -l following happens:
> aplay: device_list:223: no soundcards found...

> Don't know what is happening. Am I missing any step? What else should be done?
> Please help me asap.

You need an audio driver for the card; Linux 2.6.27 does not have an
AC97 driver for the Atmel CPUs.  The out of tree Atmel patches for
2.6.27 may have had one.

Using Alsa for AD1981b on 9263

[Shilpa Kedar Walvekar]

Hi,

Addition to my earlier post:

We are using AT91SAM9263 evaluation kit with on-board AD1981b codec. We are using Linux kernel version 2.6.27 with patches available on http://linux4sam.com. We found from the forum that we need to use ALSA for playing and recording audio using this codec.

So we downloaded
Alsa-lib-1.0.20
Alsa-oss-1.0.20
Alsa-utils-1.0.20

We installed above using:
./configure && make && make install

We then downloaded alsa-driver-1.0.20 and installed it using below:
./configure --with-cards=atmel-ac97c --with-kernel=../../linux-2.6.27 --with-build=../../linux-2.6.27 && make ARCH=arm && make install-modules

Driver was compiled and installed successfully.

We found following:
# cat /proc/asound/cards
 0 [AC97           ]: ac97c - Atmel AC97
                      Atmel AC97 Controller at 0xfffa0000, irq 18

# lsmod
Module                  Size  Used by    Not tainted
snd_at91_ac97           8420  0
snd_ac97_codec         99904  1 snd_at91_ac97
snd_soc_atmel_pcm       4484  0
snd_soc_core           30852  1 snd_soc_atmel_pcm
snd_pcm                60772  4 snd_at91_ac97,snd_ac97_codec,snd_soc_atmel_pcm,s
nd_soc_core
snd_page_alloc          6056  1 snd_pcm
snd_timer              19588  1 snd_pcm
snd                    47700  5 snd_at91_ac97,snd_ac97_codec,snd_soc_core,snd_pc
m,snd_timer
soundcore               6052  1 snd
ac97_bus                1568  1 snd_ac97_codec

# cat /home/.asoundrc
pcm.!default { type hw card 0 } ctl.!default { type hw card 0 }

We have following devices in /dev/snd
# cat /dev/snd/
/dev/snd/controlC0  /dev/snd/controlC3  /dev/snd/hwC0D2     /dev/snd/timer
/dev/snd/controlC1  /dev/snd/hwC0D0     /dev/snd/hwC0D3
/dev/snd/controlC2  /dev/snd/hwC0D1     /dev/snd/seq

# aplay -l
**** List of PLAYBACK Hardware Devices ****
ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library (null)
ALSA lib conf.c:3079:(snd_config_update_r) hooks failed, removing configuration
aplay: device_list:232: control open (0): No such file or directory

We are not able to get if module is getting loaded, then why aplay doesn't list the device?

Please help us to get the audio codec working.

Regards,
--Shilpa.

Re: Using Alsa for AD1981b on 9263

[Mark Brown]

On Tue, Jul 28, 2009 at 04:59:12PM +0530, Shilpa Kedar Walvekar wrote:

> **** List of PLAYBACK Hardware Devices ****
> ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library (null)
> ALSA lib conf.c:3079:(snd_config_update_r) hooks failed, removing configuration
> aplay: device_list:232: control open (0): No such file or directory

> We are not able to get if module is getting loaded, then why aplay doesn't list the device?

> Please help us to get the audio codec working.

This is a toolchain problem.  Normally it's that the uclibc toolchain
Atmel use by default doesn't support symbol versioning which means you
have to pass a configure option to ALSA to disable symbol versioning but
you're likely to get better help from an Atmel-specific place.

Re: Using Alsa for AD1981b on 9263

[Shilpa Kedar Walvekar]

Hi Mark,

I built the alsa lib with " --without-versioned". But still if I give aplay -l, I get following:

# aplay -l
**** List of PLAYBACK Hardware Devices ****
ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library (null)
ALSA lib conf.c:3079:(snd_config_update_r) hooks failed, removing configuration
aplay: device_list:232: control open (0): No such file or directory

Atmel is not responding for this issue. I have already placed a query on Atmel forum as well. But no reply from there.


Thanks & Regards,
--Shilpa.


-----Original Message-----
From: Mark Brown [mailto:broonie@opensource.wolfsonmicro.com]
Sent: Tuesday, July 28, 2009 5:09 PM
To: Shilpa Kedar Walvekar
Cc: Alsa-devel@alsa-project.org
Subject: Re: [alsa-devel] Using Alsa for AD1981b on 9263

On Tue, Jul 28, 2009 at 04:59:12PM +0530, Shilpa Kedar Walvekar wrote:

> **** List of PLAYBACK Hardware Devices ****
> ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library (null)
> ALSA lib conf.c:3079:(snd_config_update_r) hooks failed, removing configuration
> aplay: device_list:232: control open (0): No such file or directory

> We are not able to get if module is getting loaded, then why aplay doesn't list the device?

> Please help us to get the audio codec working.

This is a toolchain problem.  Normally it's that the uclibc toolchain
Atmel use by default doesn't support symbol versioning which means you
have to pass a configure option to ALSA to disable symbol versioning but
you're likely to get better help from an Atmel-specific place.

Re: Using Alsa for AD1981b on 9263

[Alan Horstmann]

On Wednesday 29 July 2009 08:31, Shilpa Kedar Walvekar wrote:
> Hi Mark,
>
> I built the alsa lib with " --without-versioned". But still if I give aplay
> -l, I get following:
>
> # aplay -l
> **** List of PLAYBACK Hardware Devices ****
> ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library
> (null) ALSA lib conf.c:3079:(snd_config_update_r) hooks failed, removing
> configuration aplay: device_list:232: control open (0): No such file or
> directory
>
> Atmel is not responding for this issue. I have already placed a query on
> Atmel forum as well. But no reply from there.

During my work using ALSA on ARM the Alsa-lib configure option was

	--with-versioned=no

but maybe either works.  There are a couple of other possibilities here:-

http://mailman.alsa-project.org/pipermail/alsa-devel/2008-August/009898.html

HTH

Alan