[linux-cirrus] Using the EP93xx I2S Driver

From: "Stuart Wood" <stuart.wood@xxxxxxxxxxxxxxxxxxxx>
To: <linux-cirrus@xxxxxxxxxxxxx>
Date: Fri, 15 Jun 2007 15:03:27 -0400

I was hopping that someone could help me get started with using the EP93xx
I2S driver that Chase Douglas did. 

I've built it along with the patches from Lennert Buytenhek. For the
AC97/PCM/DMA. I see the device in the kernel messages but when I try: 
"cat /dev/urandom > /dev/dsp" I get 
"-sh: cannot create /dev/dsp: No such device"

I do not have a codec attached to the EP9302's I2S, just an FPGA. I don't
know if that matters.

Thanks 

Stuart Wood


Here is some info

# dmesg
[42949374.200000] Advanced Linux Sound Architecture Driver Version 1.0.12rc1
(Thu Jun 22 13:55:50 2006 UTC).
[42949374.210000] snd-ep93xx-i2s: driver initialized
[42949374.230000] usbcore: registered new driver snd-usb-audio
[42949374.230000] ALSA device list:
[42949374.240000]   #0: ep93xx-i2s (EP93XX I2S MIXER)



# ls -al /dev
drwxr-xr-x    6 root     root         4096 Jun 15  2007 .
drwxr-xr-x   16 root     root         4096 Jun 15  2007 ..
crw-rw-rw-    1 root     snd       14,   4 Jun 15  2007 audio
crw-rw-rw-    1 root     snd       14,  20 Jun 15  2007 audio1
crw-rw-rw-    1 root     snd       14,   3 Jun 15  2007 dsp
crw-rw-rw-    1 root     snd       14,  19 Jun 15  2007 dsp1


# cat /proc/devices
Character devices:
  1 mem
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
 10 misc
 13 input
 14 sound
 90 mtd
116 alsa
128 ptm
136 pts
180 usb
189 usb_device
204 ttyAM
252 mix_module
253 fpga_device
254 spartan3e

Block devices:
 31 mtdblock

[linux-cirrus] Using the EP93xx I2S Driver

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