At Mon, 7 Aug 2006 21:31:14 +0100, Jochen Voss wrote: > > Hello, > > last week I reported bug #2325: capturing sound on the M-Audio > Revolution 5.1 does not work. While trying to figure out the > cause of the problem, I encountered the following question: > > What are the GPIO pins of the Envy24GT connected to for this card? > Since there is already a driver, somebody will probably have figured > this out, but I could not find documented anywhere. The document for 7.1 was not publicly released. And no known document for 5.1. You should ask M-Audio about it. > What I did find out: > > 1) The ice1712/revo.h header file (shared by Revolution 7.1 and 5.1) > defines the following: > > #define VT1724_REVO_CCLK 0x02 > #define VT1724_REVO_CDIN 0x04 /* not used */ > #define VT1724_REVO_CDOUT 0x08 > #define VT1724_REVO_CS0 0x10 /* not used */ > #define VT1724_REVO_CS1 0x20 /* front AKM4381 chipselect */ > #define VT1724_REVO_CS2 0x40 /* surround AKM4355 chipselect */ > #define VT1724_REVO_MUTE (1<<22) /* 0 = all mute, 1 = normal operation */ > > Why are the "not used" ones there? Why not? :) > 2) From visual inspection of the card (a photo is at > http://seehuhn.de/comp/hardware/revoboard.jpg ) I think that the > following GPIO pins are connected to something: > > 0x01 (seems to go to the PCI bus) > 0x02 > 0x04 > 0x20 > 0x40 > 0x80 > (1<<22) > > Note that 0x80 is not mentioned in the header file. Is this a > problem? Might be. The code was originally written for Revo 7.1, and I have no revo 5.1. Just heard that it works so. > 3) I think that AK4381 and AK4355 as mentioned in the header file are > DACs. The Revolution 5.1 has only one DAC (an AK4358), not two. > Could this cause problems? Not probablly but possible although the capture is likely dependent only on the ADC connection. Actually, it's a shot in the dark. No-one can answer this kind of question correctly except for M-Audio guys... Takashi ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
