[SRU] [F/Unstable/OEM-5.6] [PATCH 0/5] Support DMIC micmute LED on HP platforms

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1876859

[Impact]
DMIC micmute LED on HP platforms doesn't work.

[Fix]
Add LED class support from HDA codec, so DMIC can use LEDS_TRIGGER_AUDIO
to control micmute.

[Test]
After applying the fix, micmute LED can correctly indicate the status of
micmute.

[Regression Potential]
Low. For now it only affects one platform, and it doesn't touch any core
part of the subsystem.

Kai-Heng Feng (4):
  ALSA: hda/realtek - Introduce polarity for micmute LED GPIO
  ALSA: hda/realtek - Enable micmute LED on and HP system
  ALSA: hda/realtek - Add LED class support for micmute LED
  ASoC: SOF: Update correct LED status at the first time usage of
    update_mute_led()

Takashi Iwai (1):
  ALSA: hda/realtek - Fix unused variable warning w/o
    CONFIG_LEDS_TRIGGER_AUDIO

 sound/pci/hda/patch_realtek.c | 51 ++++++++++++++++++++++++++++++-----
 sound/soc/sof/control.c       |  4 +--
 sound/soc/sof/sof-priv.h      |  2 +-
 sound/soc/sof/topology.c      |  2 ++
 4 files changed, 49 insertions(+), 10 deletions(-)

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2.17.1