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>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 4797416..48b3367 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -364,6 +364,9 @@
#define AC_DIG2_CC (0x7f<<0)
/* Pin widget control - 8bit */
+#define AC_PINCTL_EPT (0x3<<0)
+#define AC_PINCTL_EPT_NATIVE 0
+#define AC_PINCTL_EPT_HBR 3
#define AC_PINCTL_VREFEN (0x7<<0)
#define AC_PINCTL_VREF_HIZ 0 /* Hi-Z */
#define AC_PINCTL_VREF_50 1 /* 50% */