Jaroslav Kysela wrote: > > On Fri, 20 Aug 2010, Stephen Warren wrote: > > > Jaroslav Kysela wrote: > >> > >> On Fri, 20 Aug 2010, Stephen Warren wrote: > >> > >>> Jaroslav Kysela wrote: > >>>> > >>>> On Thu, 19 Aug 2010, Stephen Warren wrote: > >>>> > >>>>> The Azalia controller on NVIDIA GPUs gives 4 ALSA hw devices: > >>>>> > >>>>> (on card 1): > >>>>> > >>>>> [swarren@swarren-lx2 ~]$ sudo aplay -l > >>>>> << includes hw=1,3 hw=1,7 hw=1,8 hw=1,9 >> > >>>>> ... all of which appear to work OK. > >>>>> > >>>>> However, the list of available "PCMs" from aplay -L doesn't expose them all: > >>>>> > >>>>> [swarren@swarren-lx2 ~]$ sudo aplay -L > >>>>> <<card 0 "Nvidia" elided>> > >>>>> hdmi:CARD=NVidia_1 > >>>>> HDA NVidia, NVIDIA HDMI > >>>>> HDMI Audio Output > >>>>> > >>>>> Instead, I imagined that I'd see 4 PCMs listed by "aplay -L"; one for each > >>>>> converter. Is this an incorrect assumption? How would I make that happen? > >>>> > >>>> There is a bug in alsa-lib to namehint.c. The code assumes that hw device > >>>> number is similar to logical device numbers which is not true in case of > >>>> your HDMI devices: > >>>> > >>>> 3, 7, 8, 9 > >>>> > >>>> The fallback code is used and only first logical device 0 is created. > >>>> > >>>> Could you test this patch? > >>>> > >>>> http://git.alsa-project.org/?p=alsa- > lib.git;a=commitdiff;h=97d25c0766405453d3c298bd51dd4916121a4f6a > >>> > >>> I tested that, and unfortunately it doesn't seem to work; I get the exact same > >>> aplay -L output. > >>> > >>> I debugged this a little, and see that add_card() is calculating the correct > >>> max_devices value for card=1 str=hdmi. However, in the loop that right after > >>> that calls try_config, when device=0, it returns 0, but when device=1, it > >>> returns -2 (-ENOENT). This happens inside try_config where it calls > >>> snd_config_search_definition (line 244 in latest git). At that point, buf is: > >>> > >>> hdmi:CARD=NVidia_1,DEV=1 > >>> > >>> ... which seems reasonable. > >>> > >>> I'm a little confused about the device numbering though: The max_devices > >>> value is counting values "3, 7, 8, 9" and hence gets 9. However, the > >>> loop that calls try_config loops 0..max_devices-1, but bails out as soon > >>> as any error is found, thus disallowing "holes" in the numbering. That > >>> implies that "device" in that loop is a different numbering space? After > >>> I noticed that, I hacked that loop to continue instead of break on > >>> errors, and also removed the "err >= 0" condition from the loop, > >>> expecting that when device==3/7/8/9, try_config might work. In fact, 0 > >>> still works (of course) and 1..8 all fail with err=-2, so I assume at > >>> the same place in try_config. > >> > >> See my description. It's assumed that the logical devices > >> (hdmi:DEV=<logical_device>) are continous. Does > >> 'aplay -D hdmi:CARD=NVidia_1,DEV=1' work in your system? > > > > Sure, the logical device IDs should be contiguous. But then, I don't see why > > the code would need to calculate max_devices (which is max HW device ID and > > hence something other than logical device ID). Anyway... > > There is no way to get the maximum logical device number at the moment. > We can add some variables to the configuration files in future. The code > just assumes that logical numbers does not go above the maximum hw device > number. > > > [swarren@swarren-lx2 ~]$ aplay -D hw:1,7 Shamisen-C4.wav > > Playing WAVE 'Shamisen-C4.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo > > > > [swarren@swarren-lx2 ~]$ aplay -D hdmi:CARD=NVidia_1,DEV=1 > > Shamisen-C4.wav ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find > > definition > > 'cards.HDA-Intel.pcm.hdmi.1:CARD=NVidia_1,AES0=4,AES1=130,AES2=0,AES3=2' > > Have you updated the HDA-Intel.conf file in the /usr/share/alsa/cards > directory? There should be definition of: > > HDA-Intel.pcm.hdmi.1 { > @args [ CARD AES0 AES1 AES2 AES3 ] > @args.CARD { type string } > @args.AES0 { type integer } > @args.AES1 { type integer } > @args.AES2 { type integer } > @args.AES3 { type integer } > @func refer > name { > > .... > > } Ah, I has not installed the library, but was just pointing LD_LIBRARY_PATH at alsa-lib/src/libs/. Once I ran "make install" and picked up that new config file, "aplay -L" does list everything I expect it to. Thanks very much. > This addition is recent: > > commit e6d5dcf1f625984605d362338d71162de45a6c60 > Author: Anssi Hannula <anssi.hannula@xxxxxx> > Date: Tue Aug 3 20:27:49 2010 +0300 > > HDA-Intel: present all 4 HDMI outputs instead of just the first one > > Commit 92608badc519a8c1f65d93743396517aaa582b53 in linux kernel added > the possibility of 3 additional HDMI devices on indexes 7-9. > > Present all those additional devices using the "hdmi" alias as well. > > Signed-off-by: Anssi Hannula <anssi.hannula@xxxxxx> > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> -- nvpublic _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
