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ASoC: mediatek: mt6358: support DMIC one-wire mode

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Supports DMIC one-wire mode. Uses a DT property "dmic-mode" to select.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/1591353222-18576-2-git-send-email-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jiaxin Yu 2020-06-05 18:33:41 +08:00 • committed by Mark Brown
parent 17212e7188
commit c46fc80094
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 22 additions and 1 deletions
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23
sound/soc/codecs/mt6358.c
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@ -95,6 +95,8 @@ struct mt6358_priv {
struct regulator *avdd_reg;
int wov_enabled;
unsigned int dmic_one_wire_mode;
};
int mt6358_set_mtkaif_protocol(struct snd_soc_component *cmpnt,
@ -1831,7 +1833,10 @@ static int mt6358_dmic_enable(struct mt6358_priv *priv)
mt6358_mtkaif_tx_enable(priv);
/* UL dmic setting */
regmap_write(priv->regmap, MT6358_AFE_UL_SRC_CON0_H, 0x0080);
if (priv->dmic_one_wire_mode)
regmap_write(priv->regmap, MT6358_AFE_UL_SRC_CON0_H, 0x0400);
else
regmap_write(priv->regmap, MT6358_AFE_UL_SRC_CON0_H, 0x0080);
/* UL turn on */
regmap_write(priv->regmap, MT6358_AFE_UL_SRC_CON0_L, 0x0003);
@ -2426,6 +2431,20 @@ static const struct snd_soc_component_driver mt6358_soc_component_driver = {
.num_dapm_routes = ARRAY_SIZE(mt6358_dapm_routes),
};
static void mt6358_parse_dt(struct mt6358_priv *priv)
{
int ret;
struct device *dev = priv->dev;
ret = of_property_read_u32(dev->of_node, "mediatek,dmic-mode",
&priv->dmic_one_wire_mode);
if (ret) {
dev_warn(priv->dev, "%s() failed to read dmic-mode\n",
__func__);
priv->dmic_one_wire_mode = 0;
}
}
static int mt6358_platform_driver_probe(struct platform_device *pdev)
{
struct mt6358_priv *priv;
@ -2445,6 +2464,8 @@ static int mt6358_platform_driver_probe(struct platform_device *pdev)
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);
mt6358_parse_dt(priv);
dev_info(priv->dev, "%s(), dev name %s\n",
__func__, dev_name(&pdev->dev));