[alsa-devel] Questions about /dev/snd and /proc/asound (new ASoC driver)

Takashi Iwai tiwai at suse.de
Fri Aug 8 08:07:35 CEST 2008

At Thu, 07 Aug 2008 17:03:30 -0400,
Simon Tremblay wrote:
> Hi,
> I have some issues with /dev/snd. First I should explain what I try to do.
> I am developing a driver for TLV320AIC23B codec and want to use it on a
> AT91RM9200-based board.
> I read documentation in sound/soc and created a codec driver
> (tlv320aic23b) and a machine driver (for my board). I think it's all I
> have to do since AT91 is supported and tlv320aic23b works with i2c and I2S.
> When I load my module I obtain that output:
> # modprobe snd-soc-armus-tlv320aic23b
> ASoC version 0.13.1
> AIC23B Audio Codec 0.1
> <6>asoc: aic23b <-> at91-ssc1 mapping ok
> <6>armus_tlv320aic23b: MCLK rate 12000000Hz
> armus_tlv320aic23b: Codec in Master Mode
> (I activated debug in soc-core and in my machine driver (based mainly on
> eti_b1_wm8731 machine driver)).
> I think there is no error here for now...
> But there is no /dev/snd created. I don't know for now why... Maybe
> someone has an idea?


Also, if you create device files statically, build the ALSA driver
without dynamic minors option.


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