ALSA: hda/realtek: Fix silent speakers on Lenovo Legion S7 15IMH05

The speakers on the Legion S7 15IMH05 (PCI SSID 17aa:3811, ALC287) stay
silent after a cold boot with the current quirk, which applies
ALC287_FIXUP_LEGION_15IMHG05_SPEAKERS. They only start working after a
suspend/resume cycle.

The amplifier setup is sent through COEF 0x24/0x26 on NID 0x20. On this
machine the first pass of that sequence appears to only wake the
amplifiers. Sending the identical sequence a second time makes both
speakers work, provided the second write comes a few milliseconds after
the first: back-to-back writes leave the speakers silent, a 7 ms gap
makes only the right speaker work, and 8 ms or more is reliable. A dump
of all COEF registers of NID 0x20 taken before and after the second
write shows no difference.

Add a dedicated fixup that writes the sequence, waits 20 ms to keep a
margin over the measured minimum, and writes it again on every codec
init. It chains to the same AUTOMUTE fixup as before. To share the
sequence, move the verbs of ALC287_FIXUP_LEGION_15IMHG05_SPEAKERS into a
named array; this has no functional change for the other users of that
fixup.

Fixes: 67f4c61a73e9 ("ALSA: hda/realtek: Add quirk for Legion S7 15IMH")
Cc: stable@vger.kernel.org
Link: https://github.com/CachyOS/linux-cachyos/issues/792
Signed-off-by: Matej Sochan <matej.sochan@gmail.com>
Link: https://patch.msgid.link/20261007-legion-s7-v1-1-8ea7fb7ee766@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

0 files changed, 0 insertions, 0 deletions