The YAMAHA AV-X1800 requires audio infoframe to include speaker-channel mapping to play >2 channel HDMI audio. In theory that mapping should be derived from its speaker configurations contained in its ELD. However we currently cannot get ELD in console before the KMS functionalities are ready. This is a more or less general issue at least in the near future. As a workaround, we propose to allow playback of mult-channel audio when ELD is not available. Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> --- sound/pci/hda/patch_intelhdmi.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- mm.orig/sound/pci/hda/patch_intelhdmi.c +++ mm/sound/pci/hda/patch_intelhdmi.c @@ -419,14 +419,18 @@ static int hdmi_setup_channel_allocation /* * CA defaults to 0 for basic stereo audio */ - if (!eld->eld_ver) - return 0; - if (!eld->spk_alloc) - return 0; if (channels <= 2) return 0; /* + * HDMI sink's ELD info cannot always be retrieved for now, e.g. + * in console or for audio devices. Assume the highest speakers + * configuration, to _not_ prohibit multi-channel audio playback. + */ + if (!eld->spk_alloc) + eld->spk_alloc = 0xffff; + + /* * expand ELD's speaker allocation mask * * ELD tells the speaker mask in a compact(paired) form, -- _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
