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

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

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/1566478261-13464-2-git-send-email-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jiaxin Yu 2019-08-22 20:51:00 +08:00 committed by Mark Brown
parent 97aad5ce88
commit 6191cbde5f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 109 additions and 6 deletions
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115
sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c
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@ -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);