[SRU][R][PATCH 0/1] Fix no audio output and mute hotkey not working on HP ZBook 8 G2a

[Chris Chiu]

From: Chris Chiu <chris.chiu at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/2158858

[Impact]
No audio output from the built-in speaker and the speaker and mic mute LEDs never turn on on affected HP systems (SSIDs 0x103c:0x8f94 and 0x103c:0x8f95).

[Fix]
Add the ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED quirk to enable speaker and mic mute LEDs for SSIDs 0x103c:0x8f94 and 0x103c:0x8f95.

[Test Plan]
1. Boot up the affected machine
2. Check the audio output by pressing `Test speakers` on the g-d-d sound menu.
3. Press the speaker and mic mute keys and verify the following
   - Speaker muted: LED is on
   - Speaker not muted: LED is off
   - Mic muted: LED is on
   - Mic not muted: LED is off

[Where problems could occur]
This change is restricted on particular SSIDs. Should be no risk of regression.

Chris Chiu (1):
  ALSA: hda/realtek: Add inverted LED quirk for HP ZBook 8 G2a

 sound/hda/codecs/realtek/alc269.c | 43 +++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

-- 
2.43.0