[PATCH 0/1][SRU][OEM-5.14] Enable the mic-mute led on Dell XPS 9315

[Chris Chiu]

BugLink: https://bugs.launchpad.net/bugs/1965846

[Impact]
On Dell's XPS 9315, the MIC-Mute function is working but the LED(on F4) state is not changed accordingly.

[Fix]
Dell's mic mute support in privacy mode has been upstream, but the the mic-mute led support is still SAUCE patch which is maintained with DMI based quirk. Add a new SKU for XPS 9315 until Dell's official fix for the mic-mute led.

[Test Case]
1. press mic-mute hot-key and check if mic-mute is enabled or not by the OSD icon.
2. The mic-mute led should be ON when mic-mute enabled, OFF when disabled.

[Where problems could occur]
It's only working on the particular SKU defined in DMI table. Will need to drop it when Dell release the official solution.

Chris Chiu (1):
  UBUNTU: SAUCE: ASoC: rt715:add micmute led control for Dell XPS 9315

 sound/soc/codecs/rt715-sdca.c | 7 +++++++
 sound/soc/codecs/rt715.c      | 7 +++++++
 2 files changed, 14 insertions(+)

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2.25.1