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| author | Mark Brown <broonie@kernel.org> | 2020-06-15 21:58:43 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-06-15 21:58:43 +0200 |
| commit | ba05f17965573985b6a709c2cb2264a9807e6b3c (patch) | |
| tree | 9396f91495a3344ace41f9e51c4940278446d2ac | |
| parent | Merge series "ASoC: soc-component: collect component functions" from Kuninori... (diff) | |
| parent | ASoC: dt-bindings: mediatek: mt6358: add dmic-mode property (diff) | |
| download | linux-ba05f17965573985b6a709c2cb2264a9807e6b3c.tar.xz linux-ba05f17965573985b6a709c2cb2264a9807e6b3c.zip | |
Merge series "ASoC: mediatek: mt6358: support DMIC one-wire mode" from Jiaxin Yu <jiaxin.yu@mediatek.com>:
v2 changes:
1. Uses a DT property to select DMIC mode instead of a mixer control.
v1 changes:
1. Uses a mixer control to select DMIC mode.
2. patchwork list:
https://patchwork.kernel.org/patch/11578309
Jiaxin Yu (2):
ASoC: mediatek: mt6358: support DMIC one-wire mode
ASoC: dt-bindings: mediatek: mt6358: add dmic-mode property
Documentation/devicetree/bindings/sound/mt6358.txt | 6 ++++++
sound/soc/codecs/mt6358.c | 23 +++++++++++++++++++++-
2 files changed, 28 insertions(+), 1 deletion(-)
--
1.8.1.1.dirty
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| -rw-r--r-- | Documentation/devicetree/bindings/sound/mt6358.txt | 6 | ||||
| -rw-r--r-- | sound/soc/codecs/mt6358.c | 23 |
2 files changed, 28 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/sound/mt6358.txt b/Documentation/devicetree/bindings/sound/mt6358.txt index 5465730013a1..59a73ffdf1d3 100644 --- a/Documentation/devicetree/bindings/sound/mt6358.txt +++ b/Documentation/devicetree/bindings/sound/mt6358.txt @@ -10,9 +10,15 @@ Required properties: - compatible : "mediatek,mt6358-sound". - Avdd-supply : power source of AVDD +Optional properties: +- mediatek,dmic-mode : Indicates how many data pins are used to transmit two + channels of PDM signal. 0 means two wires, 1 means one wire. Default + value is 0. + Example: mt6358_snd { compatible = "mediatek,mt6358-sound"; Avdd-supply = <&mt6358_vaud28_reg>; + mediatek,dmic-mode = <0>; }; diff --git a/sound/soc/codecs/mt6358.c b/sound/soc/codecs/mt6358.c index 1b830ea4f6ed..1f39d5998cf6 100644 --- a/sound/soc/codecs/mt6358.c +++ b/sound/soc/codecs/mt6358.c @@ -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)); |