[alsa-devel] [PATCH 0/4] multi-channel HDMI audio support

Wu Fengguang wfg at linux.intel.com
Wed Nov 19 01:56:14 CET 2008

Hi Takashi,

This patchset attempts to support multi-channel HDMI audio.

It contains two basic operations:

- setup the CA(channel-allocation) byte in the audio infoframe
- setup the converter channel to HDMI slot mapping

Please read patch 3 for more detailed descriptions:

	[PATCH 1/4] hda: make standalone hdmi_fill_audio_infoframe()                               
	[PATCH 2/4] hda: make global snd_print_channel_allocation()                       
	[PATCH 3/4] hda: HDMI channel allocations for audio infoframe                               
	[PATCH 4/4] hda: HDMI channel mapping cleanups                                               

The current implementation only does minimal works that ensure multi-channel
audio playing out. However the wrong speakers may be selected. We could
elaborate the framework/policy if it proves to be a problem.

Thank you,

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