Creating a /dev entry.

Creating a /dev entry.

[Adish Kuvelker]

Hello,

I am writing a ALSA driver for the AtlasIII AC'97 Controller. The
controller communicates with the AC'97 Codec and the necessary PCM,
Sequencer, Control and Timer nodes are created in the /sys. Also I get
the necessary information registered in the procfs under /proc/asound.
However, I do not see any sound nodes created under /dev. Are these
nodes created by the sound driver registration function which creates
necessary files under /sys or will I have to use utilities like
"snddevices" to create the "snd" node under /dev. I read that
"snddevices" would create the necessary entries under /dev/snd, and I
reckon that it does not create the entry "snd" under /dev.
Although I am using kernel 2.6.19.2, it doesn't have the "udev"
enabled. Will I need the "udev" to create these nodes under /dev?

Regards;
Aadish

Re: Creating a /dev entry.

[Clemens Ladisch]

Adish Kuvelker wrote:
> I am writing a ALSA driver for the AtlasIII AC'97 Controller. The
> controller communicates with the AC'97 Codec and the necessary PCM,
> Sequencer, Control and Timer nodes are created in the /sys. Also I get
> the necessary information registered in the procfs under /proc/asound.
> However, I do not see any sound nodes created under /dev. Are these
> nodes created by the sound driver registration function which creates
> necessary files under /sys

Yes, if the udev daemon is running.

> Although I am using kernel 2.6.19.2, it doesn't have the "udev"
> enabled.

Then you have to use the snddevices script.


Regards,
Clemens