O Blog do Gustavo Felisberto

Thanks to tnt_ for the driver.
To use this driver you need to already have the sources patched with the Efika extras (see the gentoo-wiki for info how how to get these), then you need to get tnt_’s patch and apply it. The sound driver is in Device Drivers —>Sound —>Advanced Linux Sound Architecture —>ALSA PPC devices —> Freescale MPC52xx AC97 interface support

Now rebuild and reboot. At the OF interface type these 3 commands:

cd /builtin/sound
" mpc5200b-psc-ac97" encode-string " compatible" property
2 encode-int 2 encode-int encode+ 0 encode-int encode+ " interrupts" property

and then boot the kernel. After that modprobe snd_mpc52xx_ac97 . Type dmesg. Do you see lots of messages? Good, as that means it is working. Use alsamixer to unmut the Master and PCM channels and try to play something using mpg321 or similar.

Now the bad news :
The driver needs work:

1. Those 3 commands must be run on every reboot. Either that or use nvedit but I still have not tried that.
2. If other processes use the interrupts for to long you will suffer under runs

If you can help drop by the #gentoo-efika IRC channel at FreeNode as there is always someone there.

This entry was posted on Wednesday, December 20th, 2006 at 3:13 pm and is filed under Efika, Gentoo, Geral.You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.