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.