[PATCH v3 0/2] Fix vaud18 power leakage of mt6359

[PATCH v3 0/2] Fix vaud18 power leakage of mt6359

[Shane Chien]

From: "Shane.Chien" <shane.chien@mediatek.com>

This series of patches is to fix vaud18 power leakage problem.
vaud18 will be enable only when mt6359 audio path is turned on.

Change since v2:
 - fix dt-binnding syntex error

Change since v1:
 - use dapm regulator supply widget for vaud18 control.
 - add vaud18 regulator property in mt6359 dt-binding.

Shane.Chien (2):
  ASoC: Fix vaud18 power leakage of mt6359
  dt-bindings: mediatek: mt6359: Add new property for mt6359

 .../devicetree/bindings/sound/mt6359.yaml          |    9 +++++++
 sound/soc/codecs/mt6359.c                          |   25 +-------------------
 sound/soc/codecs/mt6359.h                          |    8 -------
 3 files changed, 10 insertions(+), 32 deletions(-)

-- 
1.7.9.5

[PATCH v3 1/2] ASoC: Fix vaud18 power leakage of mt6359

[Shane Chien]

From: "Shane.Chien" <shane.chien@mediatek.com>

vaud18 is power of mt6359 audio path. It
should only enable when audio is used,
instead of in boot up stage.
Once mt6359 audio path is enabled or disabled,
vaud18 is controlled by regulator supply widget
"LDO_VAUD18". Due to vaud18 is controlled by
regulator dapm macro instead of regmap, the macro
MT6359_LDO_VAUD18_CON0 and variable avdd_reg
is no used and removed from mt6359.h.

Signed-off-by: Shane.Chien <shane.chien@mediatek.com>
---
 sound/soc/codecs/mt6359.c |   25 +------------------------
 sound/soc/codecs/mt6359.h |    8 --------
 2 files changed, 1 insertion(+), 32 deletions(-)

diff --git a/sound/soc/codecs/mt6359.c b/sound/soc/codecs/mt6359.c
index d20c59a..ecdfd57 100644
--- a/sound/soc/codecs/mt6359.c
+++ b/sound/soc/codecs/mt6359.c
@@ -1943,9 +1943,7 @@ static int mt_ncp_event(struct snd_soc_dapm_widget *w,
 	SND_SOC_DAPM_SUPPLY_S("CLK_BUF", SUPPLY_SEQ_CLK_BUF,
 			      MT6359_DCXO_CW12,
 			      RG_XO_AUDIO_EN_M_SFT, 0, NULL, 0),
-	SND_SOC_DAPM_SUPPLY_S("LDO_VAUD18", SUPPLY_SEQ_LDO_VAUD18,
-			      MT6359_LDO_VAUD18_CON0,
-			      RG_LDO_VAUD18_EN_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_REGULATOR_SUPPLY("LDO_VAUD18", 0, 0),
 	SND_SOC_DAPM_SUPPLY_S("AUDGLB", SUPPLY_SEQ_AUD_GLB,
 			      MT6359_AUDDEC_ANA_CON13,
 			      RG_AUDGLB_PWRDN_VA32_SFT, 1, NULL, 0),
@@ -2807,20 +2805,6 @@ static int mt6359_platform_driver_probe(struct platform_device *pdev)
 	dev_set_drvdata(&pdev->dev, priv);
 	priv->dev = &pdev->dev;
 
-	priv->avdd_reg = devm_regulator_get(&pdev->dev, "vaud18");
-	if (IS_ERR(priv->avdd_reg)) {
-		dev_err(&pdev->dev, "%s(), have no vaud18 supply: %ld",
-			__func__, PTR_ERR(priv->avdd_reg));
-		return PTR_ERR(priv->avdd_reg);
-	}
-
-	ret = regulator_enable(priv->avdd_reg);
-	if (ret) {
-		dev_err(&pdev->dev, "%s(), failed to enable regulator!\n",
-			__func__);
-		return ret;
-	}
-
 	ret = mt6359_parse_dt(priv);
 	if (ret) {
 		dev_warn(&pdev->dev, "%s() failed to parse dts\n", __func__);
@@ -2841,13 +2825,6 @@ static int mt6359_platform_driver_remove(struct platform_device *pdev)
 	dev_dbg(&pdev->dev, "%s(), dev name %s\n",
 		__func__, dev_name(&pdev->dev));
 
-	ret = regulator_disable(priv->avdd_reg);
-	if (ret) {
-		dev_err(&pdev->dev, "%s(), failed to disable regulator!\n",
-			__func__);
-		return ret;
-	}
-
 	return 0;
 }
 
diff --git a/sound/soc/codecs/mt6359.h b/sound/soc/codecs/mt6359.h
index af6f07f..35f806b 100644
--- a/sound/soc/codecs/mt6359.h
+++ b/sound/soc/codecs/mt6359.h
@@ -135,11 +135,6 @@
 /* MT6359_DCXO_CW12 */
 #define RG_XO_AUDIO_EN_M_SFT				13
 
-/* LDO_VAUD18_CON0 */
-#define RG_LDO_VAUD18_EN_SFT				0
-#define RG_LDO_VAUD18_EN_MASK				0x1
-#define RG_LDO_VAUD18_EN_MASK_SFT			(0x1 << 0)
-
 /* AUD_TOP_CKPDN_CON0 */
 #define RG_VOW13M_CK_PDN_SFT				13
 #define RG_VOW13M_CK_PDN_MASK				0x1
@@ -2132,7 +2127,6 @@
 
 #define MT6359_DCXO_CW11				0x7a6
 #define MT6359_DCXO_CW12				0x7a8
-#define MT6359_LDO_VAUD18_CON0				0x1c98
 
 #define MT6359_GPIO_MODE0				0xcc
 #define MT6359_GPIO_MODE0_SET				0xce
@@ -2469,7 +2463,6 @@ enum {
 enum {
 	/* common */
 	SUPPLY_SEQ_CLK_BUF,
-	SUPPLY_SEQ_LDO_VAUD18,
 	SUPPLY_SEQ_AUD_GLB,
 	SUPPLY_SEQ_HP_PULL_DOWN,
 	SUPPLY_SEQ_CLKSQ,
@@ -2629,7 +2622,6 @@ struct mt6359_priv {
 	int hp_gain_ctl;
 	int hp_hifi_mode;
 	int mtkaif_protocol;
-	struct regulator *avdd_reg;
 };
 
 #define CODEC_MT6359_NAME "mtk-codec-mt6359"
-- 
1.7.9.5

[PATCH v3 2/2] dt-bindings: mediatek: mt6359: Add new property for mt6359

[Shane Chien]

From: "Shane.Chien" <shane.chien@mediatek.com>

This patch add "LDO_VAUD18-supply" property to
control vaud18 regulator. It is labeled as required
due to mt6359 audio path always need to enable vaud18.

Signed-off-by: Shane.Chien <shane.chien@mediatek.com>
---
 .../devicetree/bindings/sound/mt6359.yaml          |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mt6359.yaml b/Documentation/devicetree/bindings/sound/mt6359.yaml
index a54f466..ef027c7 100644
--- a/Documentation/devicetree/bindings/sound/mt6359.yaml
+++ b/Documentation/devicetree/bindings/sound/mt6359.yaml
@@ -17,6 +17,11 @@ description: |
   Must be a child node of PMIC wrapper.
 
 properties:
+  LDO_VAUD18-supply:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: |
+      Regulator of LDO VAUD18 at 1.8V.
+
   mediatek,dmic-mode:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |
@@ -49,11 +54,15 @@ properties:
     description: |
       Specifies the type of mic type connected to adc2
 
+required:
+  - LDO_VAUD18-supply
+
 additionalProperties: false
 
 examples:
   - |
     mt6359codec: mt6359codec {
+      LDO_VAUD18-supply = <&mt6359p_vaud18_reg>;
       mediatek,dmic-mode = <0>;
       mediatek,mic-type-0 = <2>;
     };
-- 
1.7.9.5

Re: [PATCH v3 0/2] Fix vaud18 power leakage of mt6359

[Mark Brown]

On Tue, 10 Nov 2020 10:31:30 +0800, Shane Chien wrote:
> This series of patches is to fix vaud18 power leakage problem.
> vaud18 will be enable only when mt6359 audio path is turned on.
> 
> Change since v2:
>  - fix dt-binnding syntex error
> 
> Change since v1:
>  - use dapm regulator supply widget for vaud18 control.
>  - add vaud18 regulator property in mt6359 dt-binding.
> 
> [...]

Applied to

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

Thanks!

[1/2] ASoC: Fix vaud18 power leakage of mt6359
      commit: 64a70744b77898a15d7a5b2b4dc0fa9523a75cde
[2/2] dt-bindings: mediatek: mt6359: Add new property for mt6359
      commit: 08651373808e16b01d3b12207f52504c17b6774c

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