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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Trevor Wu <trevor.wu@mediatek.com>,
	AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	Mark Brown <broonie@kernel.org>, Sasha Levin <sashal@kernel.org>,
	lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com,
	matthias.bgg@gmail.com, amergnat@baylibre.com,
	ckeepax@opensource.cirrus.com, robh@kernel.org,
	dan.carpenter@linaro.org, kuninori.morimoto.gx@renesas.com,
	xiazhengqiao@huaqin.corp-partner.google.com,
	linux-sound@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 6.5 01/34] ASoC: mediatek: mt8188-mt6359: support dynamic pinctrl
Date: Tue,  7 Nov 2023 10:47:41 -0500	[thread overview]
Message-ID: <20231107154846.3766119-1-sashal@kernel.org> (raw)

From: Trevor Wu <trevor.wu@mediatek.com>

[ Upstream commit d601bb78f06b9e3cbb52e6b87b88add9920a11b6 ]

To avoid power leakage, it is recommended to replace the default pinctrl
state with dynamic pinctrl since certain audio pinmux functions can
remain in a HIGH state even when audio is disabled. Linking pinctrl with
DAPM using SND_SOC_DAPM_PINCTRL will ensure that audio pins remain in
GPIO mode by default and only switch to an audio function when necessary.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230825024935.10878-2-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/mediatek/mt8188/mt8188-mt6359.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/sound/soc/mediatek/mt8188/mt8188-mt6359.c b/sound/soc/mediatek/mt8188/mt8188-mt6359.c
index ac69c23e0da1c..7048ff52ab86a 100644
--- a/sound/soc/mediatek/mt8188/mt8188-mt6359.c
+++ b/sound/soc/mediatek/mt8188/mt8188-mt6359.c
@@ -246,6 +246,11 @@ static const struct snd_soc_dapm_widget mt8188_mt6359_widgets[] = {
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_SINK("HDMI"),
 	SND_SOC_DAPM_SINK("DP"),
+
+	/* dynamic pinctrl */
+	SND_SOC_DAPM_PINCTRL("ETDM_SPK_PIN", "aud_etdm_spk_on", "aud_etdm_spk_off"),
+	SND_SOC_DAPM_PINCTRL("ETDM_HP_PIN", "aud_etdm_hp_on", "aud_etdm_hp_off"),
+	SND_SOC_DAPM_PINCTRL("MTKAIF_PIN", "aud_mtkaif_on", "aud_mtkaif_off"),
 };
 
 static const struct snd_kcontrol_new mt8188_mt6359_controls[] = {
@@ -267,6 +272,7 @@ static int mt8188_mt6359_mtkaif_calibration(struct snd_soc_pcm_runtime *rtd)
 		snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct snd_soc_component *cmpnt_codec =
 		asoc_rtd_to_codec(rtd, 0)->component;
+	struct snd_soc_dapm_widget *pin_w = NULL, *w;
 	struct mtk_base_afe *afe;
 	struct mt8188_afe_private *afe_priv;
 	struct mtkaif_param *param;
@@ -306,6 +312,18 @@ static int mt8188_mt6359_mtkaif_calibration(struct snd_soc_pcm_runtime *rtd)
 		return 0;
 	}
 
+	for_each_card_widgets(rtd->card, w) {
+		if (!strcmp(w->name, "MTKAIF_PIN")) {
+			pin_w = w;
+			break;
+		}
+	}
+
+	if (pin_w)
+		dapm_pinctrl_event(pin_w, NULL, SND_SOC_DAPM_PRE_PMU);
+	else
+		dev_dbg(afe->dev, "%s(), no pinmux widget, please check if default on\n", __func__);
+
 	pm_runtime_get_sync(afe->dev);
 	mt6359_mtkaif_calibration_enable(cmpnt_codec);
 
@@ -403,6 +421,9 @@ static int mt8188_mt6359_mtkaif_calibration(struct snd_soc_pcm_runtime *rtd)
 	for (i = 0; i < MT8188_MTKAIF_MISO_NUM; i++)
 		param->mtkaif_phase_cycle[i] = mtkaif_phase_cycle[i];
 
+	if (pin_w)
+		dapm_pinctrl_event(pin_w, NULL, SND_SOC_DAPM_POST_PMD);
+
 	dev_dbg(afe->dev, "%s(), end, calibration ok %d\n",
 		__func__, param->mtkaif_calibration_ok);
 
-- 
2.42.0


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             reply	other threads:[~2023-11-07 15:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-07 15:47 Sasha Levin [this message]
2023-11-07 15:47 ` [PATCH AUTOSEL 6.5 15/34] ARM: 9320/1: fix stack depot IRQ stack filter Sasha Levin
2023-11-07 15:47 ` [PATCH AUTOSEL 6.5 17/34] gpiolib: of: Add quirk for mt2701-cs42448 ASoC sound Sasha Levin
2023-11-07 15:47 ` [PATCH AUTOSEL 6.5 19/34] PCI: mvebu: Use FIELD_PREP() with Link Width Sasha Levin

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