On Fri, 18 Dec 2015 11:48:49 +0100, Takashi Iwai wrote: > > On Fri, 18 Dec 2015 03:53:32 +0100, > Yang, Libin wrote: > > > > Hi Takashi, > > > > > -----Original Message----- > > > From: Takashi Iwai [mailto:tiwai@xxxxxxx] > > > Sent: Wednesday, December 16, 2015 3:47 PM > > > To: libin.yang@xxxxxxxxxxxxxxx > > > Cc: alsa-devel@xxxxxxxxxxxxxxxx; Lin, Mengdong; Yang, Libin > > > Subject: Re: [PATCH v4 0/5] ALSA: hda - hdmi support > > > dynamic pcm assignment > > > > > > On Wed, 16 Dec 2015 06:42:40 +0100, > > > libin.yang@xxxxxxxxxxxxxxx wrote: > > > > > > > > From: Libin Yang <libin.yang@xxxxxxxxxxxxxxx> > > > > > > > > The patches are trying to support dynamically binding PCM to pin > > > > in HDMI/DP audio. > > > > > > > > The pin will not bind to any PCM if there is not monitor connected. > > > > When there is a monitor connected to the port (pin), driver will > > > > try to find a proper PCM to assign to the port and setup the pin > > > > if necessary. > > > > > > > > Libin Yang (5): > > > > ALSA: hda - hdmi begin to support dynamic PCM assignment > > > > ALSA: hda - hdmi playback without monitor in dynamic pcm bind > > > mode > > > > ALSA: hda - hdmi operate spdif based on pcm > > > > ALSA: hda - hdmi dynamically bind PCM to pin when monitor hotplug > > > > ALSA: hda - hdmi setup pin when monitor hotplug in pcm dynamic > > > > assignment mode > > > > > > I updated topic/hda-mst branch with these patches. But the patch 4 > > > needs more fixes, as suggested in another mail. > > > > > > Overall, I'd like to know whether MST audio really works in the > > > current state, or not. Do you have *any* git branch where MST audio > > > is supposed to work at all? > > > > I have uploaded the patches to: https://github.com/libinyang/linux.git > > Branch is mst_virtual_pin_github. > > > > There is still an issue when doing the mst audio playback: > > The later converter selection for pin will overwrite the previous setting. > > This is the driver bug, I'm debugging it. > > Thanks. I tried this branch, but the DP MST audio on my HP laptop > dock doesn't seem working. It gets no notification (maybe expected), > but the accesses to any HDMI devices result in the error. I tested > via aplay -Dhdmi:0,0 to 0,2. > > With the latest patchset (e.g. my test/hdmi-jack branch) I get the > notification and ELD, but the audio still doesn't come out. So, > something seems missing. Actually I'm thinking how the MST things are supposed to work here. The machine here has a docking station connected to port D, and it has to DP connectors. Meanwhile it has a built-in DP port on port C. The latter works fine while dock ports don't. Suppose if I plug two monitors on the docking station. How would the audio in HD-audio side be set up? thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
