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ASoC: Add device tree documentation file for wm8782 stereo DAC

PATCH In review Daniel Mack 3 participants 7 messages Oct 3, 2018 – Oct 8, 2018

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Device tree bindings Sound ASoC Wolfson microelectronics drivers
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Daniel Mack

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#0 lore raw

PATCH 1/2 ASoC: Add device tree documentation file for wm8782 stereo DAC

Add a device tree documentation file for the wm8782 stereo DAC to describe the regulator handles.

Signed-off-by Daniel Mack <[email protected]>
---
 .../devicetree/bindings/sound/wm8782.txt        | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/wm8782.txt
Documentation/devicetree/bindings/sound/wm8782.txt new file +17 -0
new file mode 100644
index 000000000000..256cdec6ec4d
@@ -0,0 +1,17 @@
+WM8782 stereo ADC
+
+This device does not have any control interface or reset pins.
+
+Required properties:
+
+ - compatible  : "wlf,wm8782"
+ - Vdda-supply : phandle to a regulator for the analog power supply (2.7V - 5.5V)
+ - Vdd-supply  : phandle to a regulator for the digital power supply (2.7V - 3.6V)
+
+Example:
+
+wm8782: stereo-adc {
+	compatible = "wlf,wm8782";
+	Vdda-supply = <&vdda_supply>;
+	Vdd-supply = <&vdd_supply>;
+};
Signature · 1 line
2.17.1
author
#1 lore raw

PATCH 2/2 ASoC: wm8782: add support for regulators

Lookup regulators for Vdd and Vdda during probe, and enable them when the component is linked.

Signed-off-by Daniel Mack <[email protected]>
---
 sound/soc/codecs/wm8782.c | 63 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
sound/soc/codecs/wm8782.c +63 -0
index 317db9a149a7..cf2cdbece122 100644
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
+#include <linux/regulator/consumer.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>

@@ -50,7 +51,51 @@ static struct snd_soc_dai_driver wm8782_dai = {
 	},
 };
 
+/* regulator power supply names */
+static const char *supply_names[] = {
+	"Vdda", /* analog supply, 2.7V - 3.6V */
+	"Vdd",  /* digital supply, 2.7V - 5.5V */
+};
+
+struct wm8782_priv {
+	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
+};
+
+static int wm8782_soc_probe(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+static void wm8782_soc_remove(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+#ifdef CONFIG_PM
+static int wm8782_soc_suspend(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+	return 0;
+}
+
+static int wm8782_soc_resume(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+#else
+#define wm8782_soc_suspend      NULL
+#define wm8782_soc_resume       NULL
+#endif /* CONFIG_PM */
+
 static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
+	.probe			= wm8782_soc_probe,
+	.remove			= wm8782_soc_remove,
+	.suspend		= wm8782_soc_suspend,
+	.resume			= wm8782_soc_resume,
 	.dapm_widgets		= wm8782_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
 	.dapm_routes		= wm8782_dapm_routes,

@@ -63,6 +108,24 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
 
 static int wm8782_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
+	struct wm8782_priv *priv;
+	int ret, i;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, priv);
+
+	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+		priv->supplies[i].supply = supply_names[i];
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
+				      priv->supplies);
+	if (ret < 0)
+		return ret;
+
 	return devm_snd_soc_register_component(&pdev->dev,
 			&soc_component_dev_wm8782, &wm8782_dai, 1);
 }
Signature · 1 line
2.17.1
maintainer
#2 lore raw

Re: [PATCH 2/2] ASoC: wm8782: add support for regulators

Quoted 1 line · Daniel Mack

Lookup regulators for Vdd and Vdda during probe, and enable them when the

Copying in the Cirrus people...

As documented in SubmittingPatches please send patches to the maintainers for the code you would like to change. The normal kernel workflow is that people apply patches from their inboxes, if they aren't copied they are likely to not see the patch at all and it is much more difficult to apply patches.

Quoted 99 lines

component is linked.

Signed-off-by Daniel Mack <[email protected]>
---
 sound/soc/codecs/wm8782.c | 63 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
sound/soc/codecs/wm8782.c +63 -0
index 317db9a149a7..cf2cdbece122 100644
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
+#include <linux/regulator/consumer.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>

@@ -50,7 +51,51 @@ static struct snd_soc_dai_driver wm8782_dai = {
 	},
 };
 
+/* regulator power supply names */
+static const char *supply_names[] = {
+	"Vdda", /* analog supply, 2.7V - 3.6V */
+	"Vdd",  /* digital supply, 2.7V - 5.5V */
+};
+
+struct wm8782_priv {
+	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
+};
+
+static int wm8782_soc_probe(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+static void wm8782_soc_remove(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+#ifdef CONFIG_PM
+static int wm8782_soc_suspend(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+	return 0;
+}
+
+static int wm8782_soc_resume(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+#else
+#define wm8782_soc_suspend      NULL
+#define wm8782_soc_resume       NULL
+#endif /* CONFIG_PM */
+
 static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
+	.probe			= wm8782_soc_probe,
+	.remove			= wm8782_soc_remove,
+	.suspend		= wm8782_soc_suspend,
+	.resume			= wm8782_soc_resume,
 	.dapm_widgets		= wm8782_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
 	.dapm_routes		= wm8782_dapm_routes,

@@ -63,6 +108,24 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
 
 static int wm8782_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
+	struct wm8782_priv *priv;
+	int ret, i;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, priv);
+
+	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+		priv->supplies[i].supply = supply_names[i];
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
+				      priv->supplies);
+	if (ret < 0)
+		return ret;
+
 	return devm_snd_soc_register_component(&pdev->dev,
 			&soc_component_dev_wm8782, &wm8782_dai, 1);
 }
Signature · 1 line
2.17.1
maintainer
#4 lore raw

Applied "ASoC: wm8782: add support for regulators" to the asoc tree

In reply to Daniel Mack

The patch

ASoC: wm8782: add support for regulators

has been applied to the asoc tree at

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

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

Quoted 1 line

From 7454a21c13f7ce9bf1a4f9b639039b78462cec09 Mon Sep 17 00:00:00 2001

From: Daniel Mack <[email protected]>
Date: Wed, 3 Oct 2018 21:34:36 +0200
Subject: [PATCH] ASoC: wm8782: add support for regulators

Lookup regulators for Vdd and Vdda during probe, and enable them when the component is linked.

Signed-off-by Daniel Mack <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/wm8782.c | 63 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
sound/soc/codecs/wm8782.c +63 -0
index 317db9a149a7..cf2cdbece122 100644
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
+#include <linux/regulator/consumer.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>

@@ -50,7 +51,51 @@ static struct snd_soc_dai_driver wm8782_dai = {
 	},
 };
 
+/* regulator power supply names */
+static const char *supply_names[] = {
+	"Vdda", /* analog supply, 2.7V - 3.6V */
+	"Vdd",  /* digital supply, 2.7V - 5.5V */
+};
+
+struct wm8782_priv {
+	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
+};
+
+static int wm8782_soc_probe(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+static void wm8782_soc_remove(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+
+#ifdef CONFIG_PM
+static int wm8782_soc_suspend(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+	return 0;
+}
+
+static int wm8782_soc_resume(struct snd_soc_component *component)
+{
+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+}
+#else
+#define wm8782_soc_suspend      NULL
+#define wm8782_soc_resume       NULL
+#endif /* CONFIG_PM */
+
 static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
+	.probe			= wm8782_soc_probe,
+	.remove			= wm8782_soc_remove,
+	.suspend		= wm8782_soc_suspend,
+	.resume			= wm8782_soc_resume,
 	.dapm_widgets		= wm8782_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
 	.dapm_routes		= wm8782_dapm_routes,

@@ -63,6 +108,24 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
 
 static int wm8782_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
+	struct wm8782_priv *priv;
+	int ret, i;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, priv);
+
+	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+		priv->supplies[i].supply = supply_names[i];
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
+				      priv->supplies);
+	if (ret < 0)
+		return ret;
+
 	return devm_snd_soc_register_component(&pdev->dev,
 			&soc_component_dev_wm8782, &wm8782_dai, 1);
 }
Signature · 1 line
2.19.0.rc2
maintainer
#6 lore raw

Applied "ASoC: Add device tree documentation file for wm8782 stereo DAC" to the asoc tree

In reply to Daniel Mack

The patch

ASoC: Add device tree documentation file for wm8782 stereo DAC

has been applied to the asoc tree at

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

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

Quoted 1 line

From cc65fb650c682e3b43d50202a0f01da7dc11e647 Mon Sep 17 00:00:00 2001

From: Daniel Mack <[email protected]>
Date: Wed, 3 Oct 2018 21:34:35 +0200
Subject: [PATCH] ASoC: Add device tree documentation file for wm8782 stereo
DAC

Add a device tree documentation file for the wm8782 stereo DAC to describe the regulator handles.

Signed-off-by Daniel Mack <[email protected]>
Acked-by Charles Keepax <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 .../devicetree/bindings/sound/wm8782.txt        | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/wm8782.txt
Documentation/devicetree/bindings/sound/wm8782.txt new file +17 -0
new file mode 100644
index 000000000000..256cdec6ec4d
@@ -0,0 +1,17 @@
+WM8782 stereo ADC
+
+This device does not have any control interface or reset pins.
+
+Required properties:
+
+ - compatible  : "wlf,wm8782"
+ - Vdda-supply : phandle to a regulator for the analog power supply (2.7V - 5.5V)
+ - Vdd-supply  : phandle to a regulator for the digital power supply (2.7V - 3.6V)
+
+Example:
+
+wm8782: stereo-adc {
+	compatible = "wlf,wm8782";
+	Vdda-supply = <&vdda_supply>;
+	Vdd-supply = <&vdd_supply>;
+};
Signature · 1 line
2.19.0.rc2