Applied "ASoC: mediatek: mt8183: switch tdm pins gpio function when playback on or off" to the asoc tree

Mark Brown broonie at kernel.org
Thu Aug 22 11:32:57 PDT 2019


The patch

   ASoC: mediatek: mt8183: switch tdm pins gpio function when playback on or off

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.4

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 6191cbde5ff02ef5307e7b2e4f5b8f7607c2b1df Mon Sep 17 00:00:00 2001
From: Jiaxin Yu <jiaxin.yu at mediatek.com>
Date: Thu, 22 Aug 2019 20:51:00 +0800
Subject: [PATCH] ASoC: mediatek: mt8183: switch tdm pins gpio function when
 playback on or off

Pull TDM pins down when TDM BE shutdown to avoid current leakage.

Signed-off-by: Jiaxin Yu <jiaxin.yu at mediatek.com>
Link: https://lore.kernel.org/r/1566478261-13464-2-git-send-email-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 .../mt8183/mt8183-mt6358-ts3a227-max98357.c   | 115 +++++++++++++++++-
 1 file changed, 109 insertions(+), 6 deletions(-)

diff --git a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
index 272766c1b859..fe8a7461ace5 100644
--- a/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
+++ b/sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
@@ -46,6 +46,32 @@ static int mt8183_i2s_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 	return 0;
 }
 
+static const struct snd_soc_dapm_widget
+mt8183_mt6358_ts3a227_max98357_dapm_widgets[] = {
+	SND_SOC_DAPM_OUTPUT("IT6505_8CH"),
+};
+
+static const struct snd_soc_dapm_route
+mt8183_mt6358_ts3a227_max98357_dapm_routes[] = {
+	{"IT6505_8CH", NULL, "TDM"},
+};
+
+enum PINCTRL_PIN_STATE {
+	PIN_STATE_DEFAULT = 0,
+	PIN_TDM_OUT_ON,
+	PIN_TDM_OUT_OFF,
+	PIN_STATE_MAX
+};
+
+static const char * const mt8183_pin_str[PIN_STATE_MAX] = {
+	"default", "aud_tdm_out_on", "aud_tdm_out_off",
+};
+
+struct mt8183_mt6358_ts3a227_max98357_priv {
+	struct pinctrl *pinctrl;
+	struct pinctrl_state *pin_states[PIN_STATE_MAX];
+};
+
 static int
 mt8183_mt6358_ts3a227_max98357_bt_sco_startup(
 	struct snd_pcm_substream *substream)
@@ -173,6 +199,47 @@ SND_SOC_DAILINK_DEFS(tdm,
 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
 
+static int mt8183_mt6358_tdm_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mt8183_mt6358_ts3a227_max98357_priv *priv =
+		snd_soc_card_get_drvdata(rtd->card);
+	int ret;
+
+	if (IS_ERR(priv->pin_states[PIN_TDM_OUT_ON]))
+		return PTR_ERR(priv->pin_states[PIN_TDM_OUT_ON]);
+
+	ret = pinctrl_select_state(priv->pinctrl,
+				   priv->pin_states[PIN_TDM_OUT_ON]);
+	if (ret)
+		dev_err(rtd->card->dev, "%s failed to select state %d\n",
+			__func__, ret);
+
+	return ret;
+}
+
+static void mt8183_mt6358_tdm_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mt8183_mt6358_ts3a227_max98357_priv *priv =
+		snd_soc_card_get_drvdata(rtd->card);
+	int ret;
+
+	if (IS_ERR(priv->pin_states[PIN_TDM_OUT_OFF]))
+		return;
+
+	ret = pinctrl_select_state(priv->pinctrl,
+				   priv->pin_states[PIN_TDM_OUT_OFF]);
+	if (ret)
+		dev_err(rtd->card->dev, "%s failed to select state %d\n",
+			__func__, ret);
+}
+
+static struct snd_soc_ops mt8183_mt6358_tdm_ops = {
+	.startup = mt8183_mt6358_tdm_startup,
+	.shutdown = mt8183_mt6358_tdm_shutdown,
+};
+
 static struct snd_soc_dai_link
 mt8183_mt6358_ts3a227_max98357_dai_links[] = {
 	/* FE */
@@ -325,6 +392,8 @@ mt8183_mt6358_ts3a227_max98357_dai_links[] = {
 		.no_pcm = 1,
 		.dpcm_playback = 1,
 		.ignore_suspend = 1,
+		.be_hw_params_fixup = mt8183_i2s_hw_params_fixup,
+		.ops = &mt8183_mt6358_tdm_ops,
 		SND_SOC_DAILINK_REG(tdm),
 	},
 };
@@ -371,7 +440,8 @@ mt8183_mt6358_ts3a227_max98357_dev_probe(struct platform_device *pdev)
 	struct snd_soc_card *card = &mt8183_mt6358_ts3a227_max98357_card;
 	struct device_node *platform_node;
 	struct snd_soc_dai_link *dai_link;
-	struct pinctrl *default_pins;
+	struct mt8183_mt6358_ts3a227_max98357_priv *priv;
+	int ret;
 	int i;
 
 	card->dev = &pdev->dev;
@@ -397,12 +467,45 @@ mt8183_mt6358_ts3a227_max98357_dev_probe(struct platform_device *pdev)
 		card->num_aux_devs = 1;
 	}
 
-	default_pins =
-		devm_pinctrl_get_select(&pdev->dev, PINCTRL_STATE_DEFAULT);
-	if (IS_ERR(default_pins)) {
-		dev_err(&pdev->dev, "%s set pins failed\n",
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	snd_soc_card_set_drvdata(card, priv);
+
+	priv->pinctrl = devm_pinctrl_get(&pdev->dev);
+	if (IS_ERR(priv->pinctrl)) {
+		dev_err(&pdev->dev, "%s devm_pinctrl_get failed\n",
 			__func__);
-		return PTR_ERR(default_pins);
+		return PTR_ERR(priv->pinctrl);
+	}
+
+	for (i = 0 ; i < PIN_STATE_MAX ; i++) {
+		priv->pin_states[i] = pinctrl_lookup_state(priv->pinctrl,
+							   mt8183_pin_str[i]);
+		if (IS_ERR(priv->pin_states[i])) {
+			ret = PTR_ERR(priv->pin_states[i]);
+			dev_info(&pdev->dev, "%s Can't find pin state %s %d\n",
+				 __func__, mt8183_pin_str[i], ret);
+		}
+	}
+
+	if (!IS_ERR(priv->pin_states[PIN_TDM_OUT_OFF])) {
+		ret = pinctrl_select_state(priv->pinctrl,
+					   priv->pin_states[PIN_TDM_OUT_OFF]);
+		if (ret)
+			dev_info(&pdev->dev,
+				 "%s failed to select state %d\n",
+				 __func__, ret);
+	}
+
+	if (!IS_ERR(priv->pin_states[PIN_STATE_DEFAULT])) {
+		ret = pinctrl_select_state(priv->pinctrl,
+					   priv->pin_states[PIN_STATE_DEFAULT]);
+		if (ret)
+			dev_info(&pdev->dev,
+				 "%s failed to select state %d\n",
+				 __func__, ret);
 	}
 
 	return devm_snd_soc_register_card(&pdev->dev, card);
-- 
2.20.1




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