PNP configuration for Crystal 4237B sound card

Hi,

I have a Dell Inspiron 3200 laptop with a Crystal 4237B
soundcard. PNP
configuratin of the card fails (please see attached dmesg),
but I can
get the card to work by running:

# echo activate > /sys/devices/pnp0/00:11/resources
# modprobe snd-cs4236 isapnp=0 port=0x530 cport=0xf00 irq=5
dma1=1
dma2=0

I think the problem stems from the fact that the sound card
appears as
_two_ PNP devices instead of a single device.

The first PNP device is 00:11 and contains the soundcard's
port,
mpu_port, fm_port, irq, dma1 and dma2:

# cat /sys/devices/pnp0/00:11/resources
state = active
io 0x530-0x537
io 0x388-0x38b
io 0x220-0x22f
irq 5
dma 1
dma 0

The second PNP device is 00:15 and contains the soundcard's
cport:
# cat /sys/devices/pnp0/00:15/resources
state = active
io 0xf00-0xf07

Linux's PnPBIOS parser gets confused when encountering these
devices,
as can be seen from the attached dmesg:

PnPBIOS: Unknown tag '0x82', length '6'.
PM: Adding info for pnp:00:11
PnPBIOS: Unknown tag '0x82', length '4'.
PM: Adding info for pnp:00:15

How can I find out what these 6 characters in device 00:11
and these 4
characters in device 00:15 actually are? I have a feeling
they hold
the key to getting the cs4232-pnpbios driver to work.

Thank you very much for your help,
Vlad

PS: for background on this bug, please see ht
tps://bugzilla.novell.com/show_bug.cgi?id=233344


 
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--- Vlad <vladc6yahoo.com> wrote:
> Hi,
> 
> I have a Dell Inspiron 3200 laptop with a Crystal 4237B
soundcard.
> PNP
> configuratin of the card fails (please see attached
dmesg), but I
> can
> get the card to work by running:
> 
> # echo activate > /sys/devices/pnp0/00:11/resources
> # modprobe snd-cs4236 isapnp=0 port=0x530 cport=0xf00
irq=5 dma1=1
> dma2=0
> 
> I think the problem stems from the fact that the sound
card appears
> as
> _two_ PNP devices instead of a single device.
> 
> The first PNP device is 00:11 and contains the
soundcard's port,
> mpu_port, fm_port, irq, dma1 and dma2:
> 
> # cat /sys/devices/pnp0/00:11/resources
> state = active
> io 0x530-0x537
> io 0x388-0x38b
> io 0x220-0x22f
> irq 5
> dma 1
> dma 0
> 
> The second PNP device is 00:15 and contains the
soundcard's cport:
> # cat /sys/devices/pnp0/00:15/resources
> state = active
> io 0xf00-0xf07
> 
> Linux's PnPBIOS parser gets confused when encountering
these
> devices,
> as can be seen from the attached dmesg:
> 
> PnPBIOS: Unknown tag '0x82', length '6'.
> PM: Adding info for pnp:00:11
> PnPBIOS: Unknown tag '0x82', length '4'.
> PM: Adding info for pnp:00:15

OK, I found out what the tags contain: The first tag was 82
6 0 57 53
53, with the last three hexadecimal numbers coding for
"WSS". The
second tag was 82 4 0 43, with the last hexadecimal number
coding for
"C". 

The cs4232-pnpbios driver fails at
cs4236.c:snd_cs423x_pnp_init_wss()
when running:

err = pnp_manual_config_dev(pdev, cfg, 0);

The err has a value of -EINVAL. I debugged
drivers/pnp/manager.c:pnp_manual_config_dev() and saw that
the
condition (!dev || !res) evaluates to TRUE.

The cs4232-pnpbios driver then fails again at
cs4236.c:snd_cs423x_pnp_init_wss() when running:

err = pnp_activate_dev(pdev);

The err has a value of -EINVAL. I debugged
drivers/pnp/manager.c:pnp_activate_dev() and saw that (!dev)
evaluates
to TRUE, so apparently the device is null.

To summarize: The WSS and Control Port aren't recorded by
Linux's
PnPBIOS parser, which causes the WSS initialization to fail
in the
cs4232-pnpbios driver.

Any ideas how to fix this? Thanks!

Vlad


       
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