ALSA: hda/realtek: fix LG Gram Style 14 speakers

The LG Gram Style 14 (14Z90RS-G.AD77F, SSID 1854:0490) with Realtek ALC298
shows normal routing and volume changes, but internal speakers stay silent
unless a userland HDA-verb workaround is applied.

Add a dedicated quirk for the LG Gram Style 14 that programs the codec
coefficient sequence used by the known workaround and enables the speaker
amps only during playback.

Tested-by: Damien Dagorn <damien.dagorn29@gmail.com>
Signed-off-by: Damien Dagorn <damien.dagorn29@gmail.com>
Link: https://lore.kernel.org/CAN59QMUhd4kHrkRoJA6VzEr2VKezN2yjHnANaQoZn2-Bnwe3bQ@mail.gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Damien Dagorn 2026-01-23 18:14:52 +01:00 • committed by Takashi Iwai
commit cc051fbd7f