Merge tag 'regulator-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "There's one API update here, a new API factoring out a common pattern
  for reference voltage supplies. These are supplies used as a reference
  by analogue circuits where the consumer requests and enables the
  supply, reads the voltage to calibrate the user and then never touches
  it again. This is factored out into a single operation which just
  returns the voltage and uses devm_ to manage the request and enable
  portion.

  Otherwise this has been a very quiet release, we've got some new
  device support, some small fixes, housekeeping and cleanup work but
  nothing substantial.

  There's also some non-regulator changes in here, a number of users for
  the new reference voltage API were merged along with it and some MFD
  changes were pulled in as dependencies for new driver work.

  Highlights:

   - Add a new API for single operation handling of reference voltages

   - Support for Allwinner AXP717 and D1, and NXP PCA9561A"

* tag 'regulator-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (33 commits)
  regulator: sun20i: Add Allwinner D1 LDOs driver
  regulator: dt-bindings: Add Allwinner D1 system LDOs
  regulator: Mention regulator id in error message about dummy supplies
  staging: iio: impedance-analyzer: ad5933: Use devm_regulator_get_enable_read_voltage()
  iio: frequency: admv1013: Use devm_regulator_get_enable_read_voltage()
  iio: addac: ad74115: Use devm_regulator_get_enable_read_voltage()
  hwmon: (adc128d818) simplify final return in probe
  regulator: devres: fix devm_regulator_get_enable_read_voltage() return
  hwmon: (da9052) Use devm_regulator_get_enable_read_voltage()
  hwmon: (adc128d818) Use devm_regulator_get_enable_read_voltage()
  regulator: devres: add API for reference voltage supplies
  regulator: rtq2208: Fix LDO discharge register and add vsel setting
  regulator: dt-bindings: fixed-regulator: Add a preferred node name
  regulator: axp20x: add support for the AXP717
  mfd: axp20x: Add support for AXP717 PMIC
  dt-bindings: mfd: x-powers,axp152: Document AXP717
  regulator: axp20x: fix typo-ed identifier
  dt-bindings: regulator: qcom,usb-vbus-regulator: Add PM7250B compatible
  regulator: pca9450: add pca9451a support
  regulator: dt-bindings: pca9450: add pca9451a support
  ...

2 files changed, 26 insertions, 69 deletions

diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c
index 46e3c8c50765..321a61977396 100644
--- a/drivers/hwmon/adc128d818.c
+++ b/drivers/hwmon/adc128d818.c
@@ -58,7 +58,6 @@ static const u8 num_inputs[] = { 7, 8, 4, 6 };
 
 struct adc128_data {
 	struct i2c_client *client;
-	struct regulator *regulator;
 	int vref;		/* Reference voltage in mV */
 	struct mutex update_lock;
 	u8 mode;		/* Operation mode */
@@ -389,7 +388,7 @@ static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info)
 	return 0;
 }
 
-static int adc128_init_client(struct adc128_data *data)
+static int adc128_init_client(struct adc128_data *data, bool external_vref)
 {
 	struct i2c_client *client = data->client;
 	int err;
@@ -408,7 +407,7 @@ static int adc128_init_client(struct adc128_data *data)
 		regval |= data->mode << 1;
 
 	/* If external vref is selected, configure the chip to use it */
-	if (data->regulator)
+	if (external_vref)
 		regval |= 0x01;
 
 	/* Write advanced configuration register */
@@ -430,9 +429,9 @@ static int adc128_init_client(struct adc128_data *data)
 static int adc128_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
-	struct regulator *regulator;
 	struct device *hwmon_dev;
 	struct adc128_data *data;
+	bool external_vref;
 	int err, vref;
 
 	data = devm_kzalloc(dev, sizeof(struct adc128_data), GFP_KERNEL);
@@ -440,20 +439,15 @@ static int adc128_probe(struct i2c_client *client)
 		return -ENOMEM;
 
 	/* vref is optional. If specified, is used as chip reference voltage */
-	regulator = devm_regulator_get_optional(dev, "vref");
-	if (!IS_ERR(regulator)) {
-		data->regulator = regulator;
-		err = regulator_enable(regulator);
-		if (err < 0)
-			return err;
-		vref = regulator_get_voltage(regulator);
-		if (vref < 0) {
-			err = vref;
-			goto error;
-		}
-		data->vref = DIV_ROUND_CLOSEST(vref, 1000);
-	} else {
+	vref = devm_regulator_get_enable_read_voltage(dev, "vref");
+	if (vref == -ENODEV) {
+		external_vref = false;
 		data->vref = 2560;	/* 2.56V, in mV */
+	} else if (vref < 0) {
+		return vref;
+	} else {
+		external_vref = true;
+		data->vref = DIV_ROUND_CLOSEST(vref, 1000);
 	}
 
 	/* Operation mode is optional. If unspecified, keep current mode */
@@ -461,13 +455,12 @@ static int adc128_probe(struct i2c_client *client)
 		if (data->mode > 3) {
 			dev_err(dev, "invalid operation mode %d\n",
 				data->mode);
-			err = -EINVAL;
-			goto error;
+			return -EINVAL;
 		}
 	} else {
 		err = i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV);
 		if (err < 0)
-			goto error;
+			return err;
 		data->mode = (err >> 1) & ADC128_REG_MASK;
 	}
 
@@ -476,31 +469,14 @@ static int adc128_probe(struct i2c_client *client)
 	mutex_init(&data->update_lock);
 
 	/* Initialize the chip */
-	err = adc128_init_client(data);
+	err = adc128_init_client(data, external_vref);
 	if (err < 0)
-		goto error;
+		return err;
 
 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
 							   data, adc128_groups);
-	if (IS_ERR(hwmon_dev)) {
-		err = PTR_ERR(hwmon_dev);
-		goto error;
-	}
-
-	return 0;
-
-error:
-	if (data->regulator)
-		regulator_disable(data->regulator);
-	return err;
-}
-
-static void adc128_remove(struct i2c_client *client)
-{
-	struct adc128_data *data = i2c_get_clientdata(client);
 
-	if (data->regulator)
-		regulator_disable(data->regulator);
+	return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static const struct i2c_device_id adc128_id[] = {
@@ -522,7 +498,6 @@ static struct i2c_driver adc128_driver = {
 		.of_match_table = of_match_ptr(adc128_of_match),
 	},
 	.probe		= adc128_probe,
-	.remove		= adc128_remove,
 	.id_table	= adc128_id,
 	.detect		= adc128_detect,
 	.address_list	= normal_i2c,
diff --git a/drivers/hwmon/da9052-hwmon.c b/drivers/hwmon/da9052-hwmon.c
index 2bd7ae8100d7..7fb0c57dfef5 100644
--- a/drivers/hwmon/da9052-hwmon.c
+++ b/drivers/hwmon/da9052-hwmon.c
@@ -26,7 +26,6 @@ struct da9052_hwmon {
 	struct mutex		hwmon_lock;
 	bool			tsi_as_adc;
 	int			tsiref_mv;
-	struct regulator	*tsiref;
 	struct completion	tsidone;
 };
 
@@ -397,7 +396,7 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct da9052_hwmon *hwmon;
 	struct device *hwmon_dev;
-	int err;
+	int err, tsiref_uv;
 
 	hwmon = devm_kzalloc(dev, sizeof(struct da9052_hwmon), GFP_KERNEL);
 	if (!hwmon)
@@ -414,32 +413,20 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 		device_property_read_bool(pdev->dev.parent, "dlg,tsi-as-adc");
 
 	if (hwmon->tsi_as_adc) {
-		hwmon->tsiref = devm_regulator_get(pdev->dev.parent, "tsiref");
-		if (IS_ERR(hwmon->tsiref)) {
-			err = PTR_ERR(hwmon->tsiref);
-			dev_err(&pdev->dev, "failed to get tsiref: %d", err);
-			return err;
-		}
-
-		err = regulator_enable(hwmon->tsiref);
-		if (err)
-			return err;
-
-		hwmon->tsiref_mv = regulator_get_voltage(hwmon->tsiref);
-		if (hwmon->tsiref_mv < 0) {
-			err = hwmon->tsiref_mv;
-			goto exit_regulator;
-		}
+		tsiref_uv = devm_regulator_get_enable_read_voltage(dev->parent,
+								   "tsiref");
+		if (tsiref_uv < 0)
+			return dev_err_probe(dev, tsiref_uv,
+					     "failed to get tsiref voltage\n");
 
 		/* convert from microvolt (DT) to millivolt (hwmon) */
-		hwmon->tsiref_mv /= 1000;
+		hwmon->tsiref_mv = tsiref_uv / 1000;
 
 		/* TSIREF limits from datasheet */
 		if (hwmon->tsiref_mv < 1800 || hwmon->tsiref_mv > 2600) {
 			dev_err(hwmon->da9052->dev, "invalid TSIREF voltage: %d",
 				hwmon->tsiref_mv);
-			err = -ENXIO;
-			goto exit_regulator;
+			return -ENXIO;
 		}
 
 		/* disable touchscreen features */
@@ -456,7 +443,7 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 		if (err) {
 			dev_err(&pdev->dev, "Failed to register TSIRDY IRQ: %d",
 				err);
-			goto exit_regulator;
+			return err;
 		}
 	}
 
@@ -472,9 +459,6 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 exit_irq:
 	if (hwmon->tsi_as_adc)
 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
-exit_regulator:
-	if (hwmon->tsiref)
-		regulator_disable(hwmon->tsiref);
 
 	return err;
 }
@@ -483,10 +467,8 @@ static void da9052_hwmon_remove(struct platform_device *pdev)
 {
 	struct da9052_hwmon *hwmon = platform_get_drvdata(pdev);
 
-	if (hwmon->tsi_as_adc) {
+	if (hwmon->tsi_as_adc)
 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
-		regulator_disable(hwmon->tsiref);
-	}
 }
 
 static struct platform_driver da9052_hwmon_driver = {