diff options
| author | Ben Zhang <benzh@chromium.org> | 2019-11-05 17:13:26 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-11-11 13:01:59 +0000 |
| commit | 461c623270e4fa9cbab44e3ac2f0ddab2842c034 (patch) | |
| tree | 8bcbe433fa9f08e34b63984886a5b4296f149033 /sound/core | |
| parent | fe965096c9495ddcf78ec163348105e2baf8d185 (diff) | |
| download | linux-next-461c623270e4fa9cbab44e3ac2f0ddab2842c034.tar.gz | |
ASoC: rt5677: Load firmware via SPI using delayed work
The firmware rt5677_elf_vad is an ELF binary obtained from
request_firmware(). Sections of the ELF are loaded to
the DSP via SPI. A model (e.g. en_us.mmap) can optionally be
loaded to the DSP at RT5677_MODEL_ADDR to overwrite the
baked-in model in rt5677_elf_vad.
Then we switch to DSP mode, load firmware, and let DSP run.
When a hotword is detected, an interrupt is fired and
rt5677_irq() is called. When 'DSP VAD Switch' is turned off,
the codec is set back to normal mode.
The kcontrol 'DSP VAD Switch' is automatically enabled/disabled
when the hotwording PCM stream is opened/closed.
Signed-off-by: Ben Zhang <benzh@chromium.org>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20191106011335.223061-2-cujomalainey@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/core')
0 files changed, 0 insertions, 0 deletions