ALSA: hda - Add DP-MST support for NVIDIA codecs
This patch adds DP-MST support for GK104+ NVIDIA codecs. GK104+ NVIDIA codecs support DP-MST audio. These codecs have 4 output converters and 4 pin widgets, with 4 device entries per pin widget for a total of 16 device entries. This patch moves the existing patch_nvhdmi() definition to patch_nvhdmi_legacy(), used by pre-GK104 NVIDIA codecs. Redefine patch_nvhdmi() to enable DP-MST support by setting codec->dp_mst and spec->dyn_pcm_assign. Introduce fresh logic for dynamic pcm assignment, making sure that new pcm assignments are compatible with the legacy static per_pin-pmc assignment that existed in the days before DP-MST. Signed-off-by:Nikhil Mahale <nmahale@nvidia.com> Reviewed-by:
Aaron Plattner <aplattner@nvidia.com> Link: https://lore.kernel.org/r/20191119084710.29267-5-nmahale@nvidia.com Signed-off-by:
Takashi Iwai <tiwai@suse.de>
parent
9c32fea8
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