ALSA: hda - Add support for HDMI HBR passthrough

Passing IEC 61937 encapsulated compressed audio at bitrates over 6.144
Mbps (i.e. more than a single 2-channel 16-bit 192kHz IEC 60958 link)
over HDMI requires the use of HBR Audio Stream Packets instead of Audio
Sample Packets.

Enable HBR mode when the stream has 8 channels and the Non-PCM bit is
set.

If the audio converter is not connected to any HBR-capable pins, return
-EINVAL in prepare().

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c
index b81d23e42ace..5972d5e7d01f 100644
--- a/sound/pci/hda/patch_intelhdmi.c
+++ b/sound/pci/hda/patch_intelhdmi.c
@@ -66,8 +66,7 @@ static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 
         hdmi_setup_audio_infoframe(codec, hinfo->nid, substream);
 
-        hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
-        return 0;
+        return hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
 }
 
 static int intel_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,