Re: Re: [Jackit-devel] Real-world reports on two Delta 1010LTs/ice1712 synched?

[Lee Revell <rlrevell@joe-job.com>]

On Mon, 2006-01-16 at 14:26 -0500, Doug McLain wrote:
> I've been studying the ice1712 alsa driver closely over the past few 
> weeks, and comparing all relevent ice1712 control register values in 
> windows vs linux (in windows I got ahold of this nice program called 
> PCIScope, a dream for reverse engineering pci hardware!) and I think 
> (hope) the problem is in the init and configuration of the cs8427
> spdif transceiver.  There are differences in bit values on the
> ice1712's GPIO data register. So my two areas of concern are
> deciphering the usage of the GPIO register and the cs8427 spdif
> transceiver. The ice1712 talks to the cs8427 over I2C, which isnt as
> straightforward to read as regular i/o registers, so it's more
> studying ahead.  I am focusing on fixing spdif functionality, since
> the cs8427 datasheet is very clear about spdif operation.  I am hoping
> by fixing regular spdif functionality on the ship, word clock will be
> fixed too. We'll see. 

If you get stuck, SoftICE is also an incredibly useful tool for reverse
engineering Windows drivers.

Lee



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