CS4239
CS4239This is a Cirrus Logic Audio controller Note: This sound chip is paired with a PCI CS4610 audio controller, only one sound driver should be loaded, preferably the PCI driver. Features
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Linux OSS driver
This sound chip is supported by the cs4232 kernel module. Use the following options line when loading this module:
options cs4232 io=0x530 irq=5 dma=1 dma2=0
Linux ALSA driver
This sound chip is supported by the snd-cs4236 kernel module. Use the following options line when loading this module:
options snd-cs4236 snd_index=0 snd_port=0x530 snd_cport=0x538 snd_isapnp=0 snd_dma1=1 snd_dma2=0 snd_irq=5
PnP issues
This chip is software configurable. In Thinkpads, the BIOS sets up the chip if fast boot is disabled. If fast boot is enabled, the chip is disabled until a PnP driver enables it. As both the OSS and the ALSA module do not support PnP discovering of this chips in a ThinkPad, a isapnptools like user space configuration script like this one could be used.
