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From: Curtis Malainey <cujomalainey@chromium.org>
To: alsa-devel@alsa-project.org
Cc: Oder Chiou <oder_chiou@realtek.com>,
	Takashi Iwai <tiwai@suse.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Ben Zhang <benzh@chromium.org>, Mark Brown <broonie@kernel.org>,
	Bard Liao <bardliao@realtek.com>,
	Curtis Malainey <cujomalainey@chromium.org>
Subject: [alsa-devel] [PATCH v3 04/11] ASoC: rt5677: Add DAPM audio path for hotword stream
Date: Tue,  5 Nov 2019 17:13:29 -0800
Message-ID: <20191106011335.223061-5-cujomalainey@chromium.org> (raw)
In-Reply-To: <20191106011335.223061-1-cujomalainey@chromium.org>

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 | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 48955b22262f..ea235f3874ca 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -707,6 +707,13 @@ 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);
+	/* Force dapm to sync before we enable the
+	 * DSP to prevent write corruption
+	 */
+	snd_soc_dapm_sync(dapm);
+
 	/* DMIC1 power = enabled
 	 * DMIC CLK = 256 * fs / 12
 	 */
@@ -3167,6 +3174,7 @@ 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 +3709,24 @@ 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" },
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog

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  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06  1:13 [alsa-devel] [PATCH v3 00/11] Add Samus Hotwording for RT5677 Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 01/11] ASoC: rt5677: Load firmware via SPI using delayed work Curtis Malainey
2019-11-06  1:17   ` Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 02/11] ASoC: bdw-rt5677: Add a DAI link for rt5677 SPI PCM device Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 03/11] ASoC: rt5677: Enable jack detect while DSP is running Curtis Malainey
2019-11-06  1:13 ` Curtis Malainey [this message]
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 05/11] ASoC: rt5677: Mark reg RT5677_PWR_ANLG2 as volatile Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 06/11] ASoC: rt5677: Stop and restart DSP over suspend/resume Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 07/11] ASoC: rt5677: Disable irq at suspend Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 08/11] ASoC: rt5677: Allow VAD to be shut on/off at all times Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 09/11] ASoC: bdw-rt5677: Turn on MCLK1 for DSP via DAPM Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 10/11] ASoC: rt5677: Set ADC clock to use PLL and enable ASRC Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 11/11] ASoC: rt5677: Wait for DSP to boot before loading firmware Curtis Malainey

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