[alsa-devel] cmipci: have only surround40 on 6 ch card

Clemens Ladisch cladisch at fastmail.net
Tue Dec 11 09:43:28 CET 2007

SeNS wrote:
> You wrote  on Mon, 10 Dec 2007 11:53:42 +0100:
>  CL> These registers identify the chip as model 37 with four channels.
>  CL> What model is this?
> Chip should be this:
> http://www.cmedia.com.tw/files/doc/PCI/CMI8738_6ch_series_spec_v18f_registers.pdf

This is one of the datasheets that were used to write the driver, but
this .pdf is for chip version 55 which is identified by one bit in the
last byte of register 0c being set, which is not the case here:
0c: 00 00 01 00

> CL> In what ALSA version did it work?
> Unfortunatelly can't remember that :-( Some like 1.0.10RC3 (latest on the
> end of 2006).

This is strange; the 6ch-detection code hasn't changed in the last five


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