[alsa-devel] Backported sbxfi driver (UNTESTED!)

[Alexey Bazhin]

On Tue, 14 Oct 2008 08:45:20 +0200
Takashi Iwai <tiwai at suse.de> wrote:

> At Mon, 13 Oct 2008 23:21:47 +0400,
> Alexey Bazhin wrote:
> > 
> > Now it doesn't hangs :)
> 
> Glad to hear.  Did you have to use XXX_SYSTEM_TIMER or any workaround
> needed?  Or, did it work as is?
> 
> > but speakers-test produces crackling sine and
> > fails on test...
> 
> Do you mean it aborts some time later after starting the stream?
> Could you show the kernel messages?  The default debug level should
> suffice, I guess.  If any, try debug=2.

root at mayonaka:~/linux-2.6# dmesg -c >/dev/null
root at mayonaka:~/linux-2.6# insmod sound/pci/sbxfi/snd-sbxfi.ko
root at mayonaka:~/linux-2.6# dmesg
[ 2957.493602] SBXFI: INIT HW
[ 2957.596133] SBXFI: Setting TLB buffer page 0xc02000
root at mayonaka:~/linux-2.6# speaker-test -c 2 -r 96000 -t sine

speaker-test 1.0.15

Playback device is default
Stream parameters are 96000Hz, S16_LE, 2 channels
Sine wave rate is 440.0000Hz
Rate set to 96000Hz (requested 96000Hz)
Buffer size range from 32 to 16384
Period size range from 32 to 16384
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
 0 - Front Left



Write error: -5,Input/output error
xrun_recovery failed: -5,Input/output error
Transfer failed: Operation not permitted
root at mayonaka:~/linux-2.6# 
root at mayonaka:~/linux-2.6# dmesg
[ 2957.493602] SBXFI: INIT HW
[ 2957.596133] SBXFI: Setting TLB buffer page 0xc02000
[ 2974.854578] SBXFI: Allocate SRC 0
[ 2974.855368] SBXFI: allocated TLB at 0 for 16 pages
[ 2974.855372] SBXFI: filled TLB pages starting at 0xc10000
[ 2974.855393] SBXFI: PLAYBACK PREPARE: rate=96000, period_size=4096,
buffer_size=16384
[ 2974.855396] SBXFI: INIT DAC
[ 2974.855400] SBXFI: RESET DAC
[ 2975.059435] SBXFI: SETUP I2S
[ 2975.059445] SBXFI: Pitch [0:fa6] = 0x1000000
[ 2975.059449] SBXFI: Pitch [80:7a6] = 0x1000000
[ 2975.059453] SBXFI: Pitch [1:fb6] = 0x1000000
[ 2975.059456] SBXFI: Pitch [81:7b6] = 0x1000000
[ 2975.059460] SBXFI: Amp [00:0001] = 0x101c
[ 2975.059465] SBXFI: Amp [80:07a6] = 0x101c
[ 2975.059470] SBXFI: Amp [01:0011] = 0x101c
[ 2975.059474] SBXFI: Amp [81:07b6] = 0x101c
[ 2975.062594] SBXFI: PLAY TRIGGER START
[ 2975.062600] SBXFI: SETUP SRC: ch=0x0, start=0x0, loop=0x10000,
cache=0x100, ctrl=0x1045c 
[ 2975.062612] SBXFI: SETUP SRC: ch=0x1, start=0x0, loop=0x10000,
cache=0x100, ctrl=0x5c
[ 2975.062625] SBXFI: PLAY UPDATE TIMER
[ 2995.148059] SBXFI: PLAY TRIGGER STOP
[ 2995.148072] SBXFI: PLAY UPDATE TIMER
[ 2995.148079] SBXFI: release TLB at 0 for 16 pages
[ 2995.148218] SBXFI: Release SRC 0

Two more things:
-speakers-test on 48khz doesn't produce above errors, but frequency is
still not right
-24-bit samples is silent for me too

> How about the patch below for 48kHz?
Didn't changed anything...

-- 
 Alexey Bazhin
  mailto:baz at irc.msk.ru
  ICQ 125125882