linux-kernel - [PATCH 5/6] ASoC: mediatek: mt8188-mt6359: Add DMIC

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Message-Id: <20250218-genio700-dmic-v1-5-6bc653da60f7@collabora.com>
Date: Tue, 18 Feb 2025 17:52:18 -0300
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: kernel@...labora.com, linux-sound@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>, 
 parkeryang <Parker.Yang@...iatek.com>
Subject: [PATCH 5/6] ASoC: mediatek: mt8188-mt6359: Add DMIC

Add the DMIC backend, which connects to the DMIC DAI in the platform
driver, as well as a "AP DMIC" mic widget. On the Genio 700 EVK board
the dual DMIC on-board are wired through that DMIC DAI.

Co-developed-by: parkeryang <Parker.Yang@...iatek.com>
Signed-off-by: parkeryang <Parker.Yang@...iatek.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
 sound/soc/mediatek/mt8188/mt8188-mt6359.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sound/soc/mediatek/mt8188/mt8188-mt6359.c b/sound/soc/mediatek/mt8188/mt8188-mt6359.c
index 2d0d04e0232da07ba43a030b14853322427d55e7..420b1427b71dc1424a52f7ab6140c14659036733 100644
--- a/sound/soc/mediatek/mt8188/mt8188-mt6359.c
+++ b/sound/soc/mediatek/mt8188/mt8188-mt6359.c
@@ -150,6 +150,11 @@ SND_SOC_DAILINK_DEFS(dl_src,
 						   "mt6359-snd-codec-aif1")),
 		     DAILINK_COMP_ARRAY(COMP_EMPTY()));

+SND_SOC_DAILINK_DEFS(DMIC_BE,
+		     DAILINK_COMP_ARRAY(COMP_CPU("DMIC")),
+		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
+		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
 SND_SOC_DAILINK_DEFS(dptx,
 		     DAILINK_COMP_ARRAY(COMP_CPU("DPTX")),
 		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
@@ -297,6 +302,7 @@ static const struct snd_soc_dapm_widget mt8188_rear_spk_widgets[] = {
 static const struct snd_soc_dapm_widget mt8188_mt6359_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("AP DMIC", NULL),
 	SND_SOC_DAPM_SINK("HDMI"),
 	SND_SOC_DAPM_SINK("DP"),
 	SND_SOC_DAPM_MIXER(SOF_DMA_DL2, SND_SOC_NOPM, 0, 0, NULL, 0),
@@ -533,6 +539,7 @@ enum {
 	DAI_LINK_UL9_FE,
 	DAI_LINK_UL10_FE,
 	DAI_LINK_DL_SRC_BE,
+	DAI_LINK_DMIC_BE,
 	DAI_LINK_DPTX_BE,
 	DAI_LINK_ETDM1_IN_BE,
 	DAI_LINK_ETDM2_IN_BE,
@@ -1120,6 +1127,13 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = {
 		.playback_only = 1,
 		SND_SOC_DAILINK_REG(dl_src),
 	},
+	[DAI_LINK_DMIC_BE] = {
+		.name = "DMIC_BE",
+		.no_pcm = 1,
+		.capture_only = 1,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(DMIC_BE),
+	},
 	[DAI_LINK_DPTX_BE] = {
 		.name = "DPTX_BE",
 		.ops = &mt8188_dptx_ops,

-- 
2.48.1