C-Media CMI8738 sound driver needed

[haiqu]

Changeset 21536 included some code for a driver, which I have compiled and tested under Haiku. The card doesn't show up under /dev/audio

Using Marko Koscak's driver from ​http://www.bebits.com/app/2341 under BeOS 5.0.3 Pro does register the device in various places under /dev but the card still fails to make a sound. I believe this driver to be written for a very old interface (BeOS 4.x) and possibly unsupported in 5.x

[stippi]

Yes, this driver does not yet use the multi-audio driver interface, and we have only unfinished support in the form of an audio node which is supposed to interface with such drivers. However, if you install the OpenSound optional package (make sure the CMedia driver is not installed then!), you should have sound via OSS. I have a CMedia based device at home and that definitely works with OSS. Kind of takes the pressure off of finishing that "old driver" audio node... :-)

[haiqu]

Update of current work, plus missing header

[haiqu]

Attaching my current work on this driver, now suspended due to lack of ISA memory support. Included in the zipfile is diff against the cmedia directory and one missing header file required by the driver.

[korli]

This chipset is supposed to be on a PCI bus, isn't it ?

[siarzhuk]

Replying to korli:

This chipset is supposed to be on a PCI bus, isn't it ?

I have an old motherboard with CMedia 8738A audio chip here. Yes, it is on PCI bus. So I have hypothetical possibility to rewrite this driver to Haiku multi-audio API, if anybody need it. ;-) AFAIK cmedia will be the last one in the source tree using old R3 Sound API, isn't it? Mutli-audio version of sis7018 is half-ready, usb_audio will be working in the nearest future, so we will be free to bury legacy_media_addon.

[dsuden]

siarzhuk, I don't know if you will see this, but I DEFINITELY need it! Any possibility you could finish it up for Haiku?

[AlienSoldier]

I don't NEED it, but i sure could make use of it (and can test it). I have this as PCI card and on board. And i don't think OSS support the S/PDIF available on the card?

[dsjonny]

The CMI8738 (0x0111) does not works for me too using PCI card. I tried the OSS driver, but I got KDL when want to load it. I use the R1 Alpha 4.1 image. I found in the header for the driver that my chipset is supported, but Haiku does not load the driver for it.

[AlienSoldier]

I just got a SC30000 PCI card that seem to be the same chipset. I will try it in R5 this fall to see if the R5 driver can work with it.

[waddlesplash]

hrev49331 possibly helps with this; please test.

[vidrep]

Tested a Zoltrix PCI audio card using the same CM18738 chipset on hrev50608 x86_gcc2. The gain controls master output is missing in media preferences, therefore no audio.