Patch "ASoC: mediatek: mt8188-mt6359: support dynamic pinctrl" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ASoC: mediatek: mt8188-mt6359: support dynamic pinctrl

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-mediatek-mt8188-mt6359-support-dynamic-pinctrl.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit c28ee2525716a9c6305addb40036a362aee08910
Author: Trevor Wu <trevor.wu@xxxxxxxxxxxx>
Date:   Fri Aug 25 10:49:33 2023 +0800

    ASoC: mediatek: mt8188-mt6359: support dynamic pinctrl
    
    [ 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@xxxxxxxxxxxx>
    Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230825024935.10878-2-trevor.wu@xxxxxxxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/sound/soc/mediatek/mt8188/mt8188-mt6359.c b/sound/soc/mediatek/mt8188/mt8188-mt6359.c
index 9017f48b6272b..f7e22abb75846 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);