[alsa-devel] [RFC 00/15] Add Samus Hotwording for RT5677

[Curtis Malainey]

This patch series adds the hotwording implementation used in the
Pixelbook on the RT5677 driver.

Known Issues:
There is a known issue where the system will fail to detect a hotword if
suspended while the stream is open. This is due to the fact that the
haswell-dsp suspends its I2S MCLK before the RT5677 suspends which
causes the writes and reads to become corrupted as a result. Any
recommendations to correct this behaviour would be appreciated.

Ben Zhang (12):
  ASoC: rt5677: keep analog power register at SND_SOC_BIAS_OFF
  ASoC: rt5677: Add a PCM device for streaming hotword via SPI
  ASoC: rt5677: Load firmware via SPI
  ASoC: rt5677: Auto enable/disable DSP for hotwording
  ASoC: bdw-rt5677: Add a DAI link for rt5677 SPI PCM device
  ASoC: rt5677: Enable jack detect while DSP is running
  ASoC: rt5677: Use delayed work for DSP firmware load
  ASoC: rt5677: Add DAPM audio path for hotword stream
  ASoC: rt5677: Mark reg RT5677_PWR_ANLG2 as volatile
  ASoC: rt5677: Stop and restart DSP over suspend/resume
  ASoC: rt5677: Transfer one period at a time over SPI
  ASoC: rt5677: Disable irq at suspend

Curtis Malainey (3):
  ASoC: rt5677: Remove magic number register writes
  ASoC: rt5677: Allow VAD to be shut on/off at all times
  ASoC: rt5677: Turn on MCLK1 for DSP via DAPM

 sound/soc/codecs/rt5677-spi.c       | 401 ++++++++++++++++++++++
 sound/soc/codecs/rt5677-spi.h       |   1 +
 sound/soc/codecs/rt5677.c           | 496 +++++++++++++++++++++++-----
 sound/soc/codecs/rt5677.h           |   9 +-
 sound/soc/intel/boards/bdw-rt5677.c |  18 +
 5 files changed, 843 insertions(+), 82 deletions(-)

-- 
2.23.0.187.g17f5b7556c-goog