diff options
| author | Ben Zhang <benzh@chromium.org> | 2019-11-06 04:13:26 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-11-11 16:01:59 +0300 |
| commit | 461c623270e4fa9cbab44e3ac2f0ddab2842c034 (patch) | |
| tree | 8bcbe433fa9f08e34b63984886a5b4296f149033 /sound/soc/codecs/rt5677-spi.c | |
| parent | fe965096c9495ddcf78ec163348105e2baf8d185 (diff) | |
| download | linux-461c623270e4fa9cbab44e3ac2f0ddab2842c034.tar.xz | |
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/soc/codecs/rt5677-spi.c')
| -rw-r--r-- | sound/soc/codecs/rt5677-spi.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5677-spi.c b/sound/soc/codecs/rt5677-spi.c index 3aa3ea7c2768..25e28be3722e 100644 --- a/sound/soc/codecs/rt5677-spi.c +++ b/sound/soc/codecs/rt5677-spi.c @@ -26,6 +26,7 @@ #include <sound/soc.h> +#include "rt5677.h" #include "rt5677-spi.h" #define DRV_NAME "rt5677spi" @@ -111,10 +112,16 @@ static int rt5677_spi_pcm_close( struct snd_soc_component *component, struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *codec_component = + snd_soc_rtdcom_lookup(rtd, "rt5677"); + struct rt5677_priv *rt5677 = + snd_soc_component_get_drvdata(codec_component); struct rt5677_dsp *rt5677_dsp = snd_soc_component_get_drvdata(component); cancel_delayed_work_sync(&rt5677_dsp->copy_work); + rt5677->set_dsp_vad(codec_component, false); return 0; } @@ -154,9 +161,15 @@ static int rt5677_spi_prepare( struct snd_soc_component *component, struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *rt5677_component = + snd_soc_rtdcom_lookup(rtd, "rt5677"); + struct rt5677_priv *rt5677 = + snd_soc_component_get_drvdata(rt5677_component); struct rt5677_dsp *rt5677_dsp = snd_soc_component_get_drvdata(component); + rt5677->set_dsp_vad(rt5677_component, true); rt5677_dsp->dma_offset = 0; rt5677_dsp->avail_bytes = 0; return 0; |