ALSA: hda - Add support for HDMI HBR passthrough

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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>

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This commit is contained in:

Anssi Hannula 2010-08-03 13:28:58 +03:00 • committed by Takashi Iwai

parent 32c168c892

commit ea87d1c493

4 changed files with 44 additions and 5 deletions

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3

sound/pci/hda/hda_codec.h

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40

sound/pci/hda/patch_hdmi.c

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3

sound/pci/hda/patch_intelhdmi.c

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3

sound/pci/hda/patch_nvhdmi.c

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