Benny Sjostrand wrote:>> Benny-- > > > Finally, so far I know the Santa Cruz is yet another card where we dont > have technical specifications. It's possible that there is any GPIO or > whatever kind of logic that controls "something" that makes the sound > better. > Not having a Santa Cruz card dont make things easier ... I had one I > would start testing all the EGPIO's by the hard way seing what happens, > (maybe > someone that have time and such a card can do this ?) In the current > cs46xx driver there is some debug code to control the EGPIO's from the > ALSA mixer that can be activated by defining > CONFIG_SND_CS46XX_DEBUG_GPIO in cs46xx_lib.c, that I've been using to > test EGPIO functionality on > the Game Theater XP card. > > It's possible that the current ALSA driver needs to be optimized. When a > new PCM channel is opened first time the driver needs to do a lot a > things. Sure that the you got a small and short peak when audio > playback starts. Can you can meusure if it's System time, User time ? > > The "external_amp" parameter is specified when module is loaded, eg. on > a line in /etc/module.conf: > option snd-cs46xx external_amp=1 >
/Benny I have tested the modules option (the parameter is actually snd_external_amp) but no difference. I am attempting to use the debug code, but after defining I get the following errors during compile: gcc -D__KERNEL__ -DMODULE=1 -I/home/weijia/Downloads/alsa-cvs/alsa-driver/include -I/lib/modules/2.4.19/build/include -O2 -mpreferred-stack-boundary=2 -march=i686 -malign-functions=4 -DLINUX -Wall -Wstrict-prototypes -fomit-frame-pointer -pipe -DALSA_BUILD -DCONFIG_SND_CS46XX_NEW_DSP=1 -DKBUILD_BASENAME=cs46xx_lib -c -o cs46xx_lib.o cs46xx_lib.c In file included from cs46xx_lib.c:2: ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c: In function `snd_cs46xx_iec958_put': ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1615: warning: `res' might be used uninitialized in this function ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c: In function `snd_cs46xx_egpio_select_get': ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1767: structure has no member named `current_gpio' ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c: In function `snd_cs46xx_egpio_select_put': ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1776: structure has no member named `current_gpio' ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1777: structure has no member named `current_gpio' ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c: In function `snd_cs46xx_egpio_get': ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1791: structure has no member named `current_gpio' ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c: In function `snd_cs46xx_egpio_put': ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1806: structure has no member named `current_gpio' ./../alsa-kernel/pci/cs46xx/cs46xx_lib.c:1808: structure has no member named `current_gpio' make[3]: *** [cs46xx_lib.o] Error 1 make[3]: Leaving directory `/home/weijia/Downloads/alsa-cvs/alsa-driver/pci/cs46xx' make[2]: *** [_modsubdir_cs46xx] Error 2 make[2]: Leaving directory `/home/weijia/Downloads/alsa-cvs/alsa-driver/pci' make[1]: *** [compile] Error 1 make[1]: Leaving directory `/home/weijia/Downloads/alsa-cvs/alsa-driver' make: *** [build] Error 2 any ideas? Thanks -- Weijia Yang School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, GA ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
