[alsa-devel] [PATCH RFC 3/3] ALSA: HDMI - Setup channel mapping for non_pcm audio

[Wang Xingchao]

For HBR stream test, use straight channel mapping way.
when switched back to "speaker-test -c8", even the audio
infoframe is up-to-date, there should be correct channel mapping setup.

Signed-off-by: Wang Xingchao <xingchao.wang at intel.com>
---
 sound/pci/hda/patch_hdmi.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index a87f8b2..bcb0939 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -780,6 +780,11 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
 		hdmi_fill_audio_infoframe(codec, pin_nid,
 					    ai.bytes, sizeof(ai));
 		hdmi_start_infoframe_trans(codec, pin_nid);
+	} else {
+		/* For non-pcm audio switch, setup new channel mapping
+		 * accordingly */
+		if (per_cvt->non_pcm != non_pcm)
+			hdmi_setup_channel_mapping(codec, pin_nid, cvt_nid, non_pcm, ca);
 	}
 
 	per_cvt->non_pcm = non_pcm;
-- 
1.7.9.5