ALSA: hda/tegra: Update scratch reg. communication
authorMohan Kumar <mkumard@nvidia.com>
Wed, 16 Feb 2022 09:22:37 +0000 (14:52 +0530)
committerTakashi Iwai <tiwai@suse.de>
Mon, 21 Feb 2022 10:03:37 +0000 (11:03 +0100)
commit85f29492929bd52dc3b05876c7ae0362608475ce
tree32f601b03f58963ea7f9828782842c2da1956fca
parentb58d511ded88ebfc14381eb9fe6e66080e8ed10f
ALSA: hda/tegra: Update scratch reg. communication

Tegra234 chip scratch register communication between audio
and hdmi driver differs slightly in the way it triggers the
interrupt compared to legacy chips. Interrupt is triggered
by writing non-zero values to verb 0xF80 instead of 31st bit
of scratch register.

DP MST support changed the NID to be used for scratch register
read/write from audio function group NID to Converter widget NID.

Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Link: https://lore.kernel.org/r/20220216092240.26464-4-mkumard@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/patch_hdmi.c