From: Ben Zhang benzh@chromium.org
Add a DAPM audio path from "DMIC L1" to "DSP Buffer" so that when hotwording is enabled, DAPM does not power off the codec with SND_SOC_BIAS_OFF.
Signed-off-by: Ben Zhang benzh@chromium.org Signed-off-by: Curtis Malainey cujomalainey@chromium.org --- sound/soc/codecs/rt5677.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c index 48955b22262fa..abb83f2e9974f 100644 --- a/sound/soc/codecs/rt5677.c +++ b/sound/soc/codecs/rt5677.c @@ -707,6 +707,15 @@ static void rt5677_set_dsp_mode(struct rt5677_priv *rt5677, bool on)
static unsigned int rt5677_set_vad_source(struct rt5677_priv *rt5677) { + struct snd_soc_dapm_context *dapm = + snd_soc_component_get_dapm(rt5677->component); + /* The hotword audio path is from "DMIC L1" to "DSP Buffer". + * "DSP Buffer" is then connected to "DSP Capture" which is the + * rt5677-dsp-cpu-dai with a PCM interface in rt5677-spi. + */ + snd_soc_dapm_enable_pin(dapm, "DMIC L1"); + snd_soc_dapm_sync(dapm); + /* DMIC1 power = enabled * DMIC CLK = 256 * fs / 12 */ @@ -3167,6 +3176,7 @@ static const struct snd_soc_dapm_widget rt5677_dapm_widgets[] = { SND_SOC_DAPM_AIF_OUT("AIF4TX", "AIF4 Capture", 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_AIF_IN("SLBRX", "SLIMBus Playback", 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_AIF_OUT("SLBTX", "SLIMBus Capture", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("DSPTX", "DSP Buffer", 0, SND_SOC_NOPM, 0, 0),
/* Sidetone Mux */ SND_SOC_DAPM_MUX("Sidetone Mux", SND_SOC_NOPM, 0, 0, @@ -3701,11 +3711,24 @@ static const struct snd_soc_dapm_route rt5677_dapm_routes[] = { { "SLBTX", NULL, "SLB ADC3 Mux" }, { "SLBTX", NULL, "SLB ADC4 Mux" },
+ { "DSPTX", NULL, "IB01 Bypass Mux" }, + { "IB01 Mux", "IF1 DAC 01", "IF1 DAC01" }, { "IB01 Mux", "IF2 DAC 01", "IF2 DAC01" }, { "IB01 Mux", "SLB DAC 01", "SLB DAC01" }, { "IB01 Mux", "STO1 ADC MIX", "Stereo1 ADC MIX" }, - { "IB01 Mux", "VAD ADC/DAC1 FS", "DAC1 FS" }, + /* The IB01 Mux controls the source for InBound0 and InBound1. + * When the mux option "VAD ADC/DAC1 FS" is selected, "VAD ADC" goes to + * InBound0 and "DAC1 FS" goes to InBound1. "VAD ADC" is used for + * hotwording. "DAC1 FS" is not used currently. + * + * Creating a common widget node for "VAD ADC" + "DAC1 FS" and + * connecting the common widget to IB01 Mux causes the issue where + * there is an active path going from system playback -> "DAC1 FS" -> + * IB01 Mux -> DSP Buffer -> hotword stream. This wrong path confuses + * DAPM. Therefore "DAC1 FS" is ignored for now. + */ + { "IB01 Mux", "VAD ADC/DAC1 FS", "VAD ADC Mux" },
{ "IB01 Bypass Mux", "Bypass", "IB01 Mux" }, { "IB01 Bypass Mux", "Pass SRC", "IB01 Mux" },