[PATCH v5 0/2] regulator: act8945a: add regulator driver for the sub-device of ACT8945A MFD

[PATCH v5 0/2] regulator: act8945a: add regulator driver for the sub-device of ACT8945A MFD

[Wenyou Yang]

The ACT8945A is a Multi Function Device with the following subdevices:
 - Regulator
 - Charger

This patch set is to add regulator driver for ACT8945A.
It is based on the patch set:
	http://lists.infradead.org/pipermail/linux-arm-kernel/2016-February/405258.html

Changes in v5:
 - remove the OF table.
 - due to the mfd cell .of_compatible removal, use the platform
   device's parent of_node to read the property and assign it
   to the config.dev->of_node.
 - move the config assignment out of the for loop.
 - due the mfd cell .of_compatible removal, update the compatibe
   description and example

Changes in v4:
 - change the name "act8945a-pmic" to "act8945a-regulator"
   to align mfd subdevice's name.

Changes in v3:
 - use the core regulators_node and of_match implementation,
   remove the redundant code.
 - use the core dev_get_regmap(dev->parent) code, remove
   the redundant code.
 - change the regulator name to easily implement macro.
 - use a space after #define, not tabs.
 - add OF match table.

Changes in v2:
 - add more help information in Kconfig.
 - update the file header with short version license and author line.
 - remove unused structure, struct act8945a_pmic.
 - substitute of_property_read_bool() for of_get_property().
 - due to removing the member of stuct act8945a_dev, dev.
 - remove the unnecessary print out.
 - use module_platform_driver(), instead of subsys_initcall().
 - substitute MODULE_LICENSE("GPL") for MODULE_LICENSE("GPL v2").
 - add Acked-by Rob Herring.

Wenyou Yang (2):
  regulator: act8945a: add regulator driver for ACT8945A
  regulator: add documentation for ACT8945A's regulator DT bindings

 .../bindings/regulator/act8945a-regulator.txt      |   80 ++++++++++
 drivers/regulator/Kconfig                          |    9 ++
 drivers/regulator/Makefile                         |    1 +
 drivers/regulator/act8945a-regulator.c             |  165 ++++++++++++++++++++
 4 files changed, 255 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
 create mode 100644 drivers/regulator/act8945a-regulator.c

-- 
1.7.9.5

[PATCH v5 1/2] regulator: act8945a: add regulator driver for ACT8945A

[Wenyou Yang]

This patch adds new regulator driver to support ACT8945A MFD
chip's regulators.

The ACT8945A has three step-down DC/DC converters and four
low-dropout regulators.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
---

Changes in v5:
 - remove the OF table.
 - due to the mfd cell .of_compatible removal, use the platform
   device's parent of_node to read the property and assign it
   to the config.dev->of_node.
 - move the config assignment out of the for loop.

Changes in v4:
 - change the name "act8945a-pmic" to "act8945a-regulator"
   to align mfd subdevice's name.

Changes in v3:
 - use the core regulators_node and of_match implementation,
   remove the redundant code.
 - use the core dev_get_regmap(dev->parent) code, remove
   the redundant code.
 - change the regulator name to easily implement macro.
 - use a space after #define, not tabs.
 - add OF match table.

Changes in v2:
 - add more help information in Kconfig.
 - update the file header with short version license and author line.
 - remove unused structure, struct act8945a_pmic.
 - substitute of_property_read_bool() for of_get_property().
 - due to removing the member of stuct act8945a_dev, dev.
 - remove the unnecessary print out.
 - use module_platform_driver(), instead of subsys_initcall().
 - substitute MODULE_LICENSE("GPL") for MODULE_LICENSE("GPL v2").

 drivers/regulator/Kconfig              |    9 ++
 drivers/regulator/Makefile             |    1 +
 drivers/regulator/act8945a-regulator.c |  165 ++++++++++++++++++++++++++++++++
 3 files changed, 175 insertions(+)
 create mode 100644 drivers/regulator/act8945a-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8155e80..74a6354 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -78,6 +78,15 @@ config REGULATOR_ACT8865
 	  This driver controls a active-semi act8865 voltage output
 	  regulator via I2C bus.
 
+config REGULATOR_ACT8945A
+	tristate "Active-semi ACT8945A voltage regulator"
+	depends on MFD_ACT8945A
+	help
+	  This driver controls a active-semi ACT8945A voltage regulator
+	  via I2C bus. The ACT8945A features three step-down DC/DC converters
+	  and four low-dropout linear regulators, along with a ActivePath
+	  battery charger.
+
 config REGULATOR_AD5398
 	tristate "Analog Devices AD5398/AD5821 regulators"
 	depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 980b194..348cfd7 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
 obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
 obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500-ext.o ab8500.o
 obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o
+obj-$(CONFIG_REGULATOR_ACT8945A) += act8945a-regulator.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act8945a-regulator.c
new file mode 100644
index 0000000..441864b
--- /dev/null
+++ b/drivers/regulator/act8945a-regulator.c
@@ -0,0 +1,165 @@
+/*
+ * Voltage regulation driver for active-semi ACT8945A PMIC
+ *
+ * Copyright (C) 2015 Atmel Corporation
+ *
+ * Author: Wenyou Yang <wenyou.yang@atmel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+/**
+ * ACT8945A Global Register Map.
+ */
+#define ACT8945A_SYS_MODE	0x00
+#define ACT8945A_SYS_CTRL	0x01
+#define ACT8945A_DCDC1_VSET1	0x20
+#define ACT8945A_DCDC1_VSET2	0x21
+#define ACT8945A_DCDC1_CTRL	0x22
+#define ACT8945A_DCDC2_VSET1	0x30
+#define ACT8945A_DCDC2_VSET2	0x31
+#define ACT8945A_DCDC2_CTRL	0x32
+#define ACT8945A_DCDC3_VSET1	0x40
+#define ACT8945A_DCDC3_VSET2	0x41
+#define ACT8945A_DCDC3_CTRL	0x42
+#define ACT8945A_LDO1_VSET	0x50
+#define ACT8945A_LDO1_CTRL	0x51
+#define ACT8945A_LDO2_VSET	0x54
+#define ACT8945A_LDO2_CTRL	0x55
+#define ACT8945A_LDO3_VSET	0x60
+#define ACT8945A_LDO3_CTRL	0x61
+#define ACT8945A_LDO4_VSET	0x64
+#define ACT8945A_LDO4_CTRL	0x65
+
+/**
+ * Field Definitions.
+ */
+#define ACT8945A_ENA		0x80	/* ON - [7] */
+#define ACT8945A_VSEL_MASK	0x3F	/* VSET - [5:0] */
+
+/**
+ * ACT8945A Voltage Number
+ */
+#define ACT8945A_VOLTAGE_NUM	64
+
+enum {
+	ACT8945A_ID_DCDC1,
+	ACT8945A_ID_DCDC2,
+	ACT8945A_ID_DCDC3,
+	ACT8945A_ID_LDO1,
+	ACT8945A_ID_LDO2,
+	ACT8945A_ID_LDO3,
+	ACT8945A_ID_LDO4,
+	ACT8945A_REG_NUM,
+};
+
+static const struct regulator_linear_range act8945a_voltage_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
+	REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
+	REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
+};
+
+static struct regulator_ops act8945a_ops = {
+	.list_voltage		= regulator_list_voltage_linear_range,
+	.map_voltage		= regulator_map_voltage_linear_range,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+};
+
+#define ACT89xx_REG(_name, _family, _id, _vsel_reg, _supply)		\
+	[_family##_ID_##_id] = {					\
+		.name			= _name,			\
+		.supply_name		= _supply,			\
+		.of_match		= of_match_ptr("REG_"#_id),	\
+		.regulators_node	= of_match_ptr("regulators"),	\
+		.id			= _family##_ID_##_id,		\
+		.type			= REGULATOR_VOLTAGE,		\
+		.ops			= &act8945a_ops,		\
+		.n_voltages		= ACT8945A_VOLTAGE_NUM,		\
+		.linear_ranges		= act8945a_voltage_ranges,	\
+		.n_linear_ranges	= ARRAY_SIZE(act8945a_voltage_ranges), \
+		.vsel_reg		= _family##_##_id##_##_vsel_reg, \
+		.vsel_mask		= ACT8945A_VSEL_MASK,		\
+		.enable_reg		= _family##_##_id##_CTRL,	\
+		.enable_mask		= ACT8945A_ENA,			\
+		.owner			= THIS_MODULE,			\
+	}
+
+static const struct regulator_desc act8945a_regulators[] = {
+	ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET1, "vp1"),
+	ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET1, "vp2"),
+	ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET1, "vp3"),
+	ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
+	ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
+};
+
+static const struct regulator_desc act8945a_alt_regulators[] = {
+	ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET2, "vp1"),
+	ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET2, "vp2"),
+	ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET2, "vp3"),
+	ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
+	ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
+};
+
+static int act8945a_pmic_probe(struct platform_device *pdev)
+{
+	struct regulator_config config = { };
+	const struct regulator_desc *regulators;
+	struct regulator_dev *rdev;
+	int i, num_regulators;
+	bool voltage_select;
+
+	voltage_select = of_property_read_bool(pdev->dev.parent->of_node,
+					       "active-semi,vsel-high");
+
+	if (voltage_select) {
+		regulators = act8945a_alt_regulators;
+		num_regulators = ARRAY_SIZE(act8945a_alt_regulators);
+	} else {
+		regulators = act8945a_regulators;
+		num_regulators = ARRAY_SIZE(act8945a_regulators);
+	}
+
+	config.dev = &pdev->dev;
+	config.dev->of_node = pdev->dev.parent->of_node;
+	for (i = 0; i < num_regulators; i++) {
+		rdev = devm_regulator_register(&pdev->dev, &regulators[i], &config);
+		if (IS_ERR(rdev)) {
+			dev_err(&pdev->dev,
+				"failed to register %s regulator\n",
+				regulators[i].name);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	return 0;
+}
+
+static struct platform_driver act8945a_pmic_driver = {
+	.driver = {
+		.name = "act8945a-regulator",
+	},
+	.probe = act8945a_pmic_probe,
+};
+module_platform_driver(act8945a_pmic_driver);
+
+MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver");
+MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
+MODULE_LICENSE("GPL");
-- 
1.7.9.5

Applied "regulator: act8945a: add regulator driver for ACT8945A" to the regulator tree

[Mark Brown]

The patch

   regulator: act8945a: add regulator driver for ACT8945A

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.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

>From 38c09961048b853afd9429c9b57685a1511bc857 Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@atmel.com>
Date: Fri, 5 Feb 2016 12:33:30 +0800
Subject: [PATCH] regulator: act8945a: add regulator driver for ACT8945A

This patch adds new regulator driver to support ACT8945A MFD
chip's regulators.

The ACT8945A has three step-down DC/DC converters and four
low-dropout regulators.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/regulator/Kconfig              |   9 ++
 drivers/regulator/Makefile             |   1 +
 drivers/regulator/act8945a-regulator.c | 165 +++++++++++++++++++++++++++++++++
 3 files changed, 175 insertions(+)
 create mode 100644 drivers/regulator/act8945a-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8155e80dd3f8..74a6354eaefa 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -78,6 +78,15 @@ config REGULATOR_ACT8865
 	  This driver controls a active-semi act8865 voltage output
 	  regulator via I2C bus.
 
+config REGULATOR_ACT8945A
+	tristate "Active-semi ACT8945A voltage regulator"
+	depends on MFD_ACT8945A
+	help
+	  This driver controls a active-semi ACT8945A voltage regulator
+	  via I2C bus. The ACT8945A features three step-down DC/DC converters
+	  and four low-dropout linear regulators, along with a ActivePath
+	  battery charger.
+
 config REGULATOR_AD5398
 	tristate "Analog Devices AD5398/AD5821 regulators"
 	depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 980b1943fa81..348cfd727350 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
 obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
 obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500-ext.o ab8500.o
 obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o
+obj-$(CONFIG_REGULATOR_ACT8945A) += act8945a-regulator.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act8945a-regulator.c
new file mode 100644
index 000000000000..441864b9fece
--- /dev/null
+++ b/drivers/regulator/act8945a-regulator.c
@@ -0,0 +1,165 @@
+/*
+ * Voltage regulation driver for active-semi ACT8945A PMIC
+ *
+ * Copyright (C) 2015 Atmel Corporation
+ *
+ * Author: Wenyou Yang <wenyou.yang@atmel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+/**
+ * ACT8945A Global Register Map.
+ */
+#define ACT8945A_SYS_MODE	0x00
+#define ACT8945A_SYS_CTRL	0x01
+#define ACT8945A_DCDC1_VSET1	0x20
+#define ACT8945A_DCDC1_VSET2	0x21
+#define ACT8945A_DCDC1_CTRL	0x22
+#define ACT8945A_DCDC2_VSET1	0x30
+#define ACT8945A_DCDC2_VSET2	0x31
+#define ACT8945A_DCDC2_CTRL	0x32
+#define ACT8945A_DCDC3_VSET1	0x40
+#define ACT8945A_DCDC3_VSET2	0x41
+#define ACT8945A_DCDC3_CTRL	0x42
+#define ACT8945A_LDO1_VSET	0x50
+#define ACT8945A_LDO1_CTRL	0x51
+#define ACT8945A_LDO2_VSET	0x54
+#define ACT8945A_LDO2_CTRL	0x55
+#define ACT8945A_LDO3_VSET	0x60
+#define ACT8945A_LDO3_CTRL	0x61
+#define ACT8945A_LDO4_VSET	0x64
+#define ACT8945A_LDO4_CTRL	0x65
+
+/**
+ * Field Definitions.
+ */
+#define ACT8945A_ENA		0x80	/* ON - [7] */
+#define ACT8945A_VSEL_MASK	0x3F	/* VSET - [5:0] */
+
+/**
+ * ACT8945A Voltage Number
+ */
+#define ACT8945A_VOLTAGE_NUM	64
+
+enum {
+	ACT8945A_ID_DCDC1,
+	ACT8945A_ID_DCDC2,
+	ACT8945A_ID_DCDC3,
+	ACT8945A_ID_LDO1,
+	ACT8945A_ID_LDO2,
+	ACT8945A_ID_LDO3,
+	ACT8945A_ID_LDO4,
+	ACT8945A_REG_NUM,
+};
+
+static const struct regulator_linear_range act8945a_voltage_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
+	REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
+	REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
+};
+
+static struct regulator_ops act8945a_ops = {
+	.list_voltage		= regulator_list_voltage_linear_range,
+	.map_voltage		= regulator_map_voltage_linear_range,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+};
+
+#define ACT89xx_REG(_name, _family, _id, _vsel_reg, _supply)		\
+	[_family##_ID_##_id] = {					\
+		.name			= _name,			\
+		.supply_name		= _supply,			\
+		.of_match		= of_match_ptr("REG_"#_id),	\
+		.regulators_node	= of_match_ptr("regulators"),	\
+		.id			= _family##_ID_##_id,		\
+		.type			= REGULATOR_VOLTAGE,		\
+		.ops			= &act8945a_ops,		\
+		.n_voltages		= ACT8945A_VOLTAGE_NUM,		\
+		.linear_ranges		= act8945a_voltage_ranges,	\
+		.n_linear_ranges	= ARRAY_SIZE(act8945a_voltage_ranges), \
+		.vsel_reg		= _family##_##_id##_##_vsel_reg, \
+		.vsel_mask		= ACT8945A_VSEL_MASK,		\
+		.enable_reg		= _family##_##_id##_CTRL,	\
+		.enable_mask		= ACT8945A_ENA,			\
+		.owner			= THIS_MODULE,			\
+	}
+
+static const struct regulator_desc act8945a_regulators[] = {
+	ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET1, "vp1"),
+	ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET1, "vp2"),
+	ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET1, "vp3"),
+	ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
+	ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
+};
+
+static const struct regulator_desc act8945a_alt_regulators[] = {
+	ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET2, "vp1"),
+	ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET2, "vp2"),
+	ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET2, "vp3"),
+	ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
+	ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
+	ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
+};
+
+static int act8945a_pmic_probe(struct platform_device *pdev)
+{
+	struct regulator_config config = { };
+	const struct regulator_desc *regulators;
+	struct regulator_dev *rdev;
+	int i, num_regulators;
+	bool voltage_select;
+
+	voltage_select = of_property_read_bool(pdev->dev.parent->of_node,
+					       "active-semi,vsel-high");
+
+	if (voltage_select) {
+		regulators = act8945a_alt_regulators;
+		num_regulators = ARRAY_SIZE(act8945a_alt_regulators);
+	} else {
+		regulators = act8945a_regulators;
+		num_regulators = ARRAY_SIZE(act8945a_regulators);
+	}
+
+	config.dev = &pdev->dev;
+	config.dev->of_node = pdev->dev.parent->of_node;
+	for (i = 0; i < num_regulators; i++) {
+		rdev = devm_regulator_register(&pdev->dev, &regulators[i], &config);
+		if (IS_ERR(rdev)) {
+			dev_err(&pdev->dev,
+				"failed to register %s regulator\n",
+				regulators[i].name);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	return 0;
+}
+
+static struct platform_driver act8945a_pmic_driver = {
+	.driver = {
+		.name = "act8945a-regulator",
+	},
+	.probe = act8945a_pmic_probe,
+};
+module_platform_driver(act8945a_pmic_driver);
+
+MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver");
+MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
+MODULE_LICENSE("GPL");
-- 
2.7.0.rc3

[PATCH v5 2/2] regulator: add documentation for ACT8945A's regulator DT bindings

[Wenyou Yang]

This patch adds documentation for the DT bindings of the regulator
subdevice of ACT8945A MFD.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
---

Changes in v5:
 - due the mfd cell .of_compatible removal, update the compatibe
   description and example

Changes in v4: None
Changes in v3: None
Changes in v2:
 - add Acked-by Rob Herring.

 .../bindings/regulator/act8945a-regulator.txt      |   80 ++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/act8945a-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
new file mode 100644
index 0000000..5c80a77
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
@@ -0,0 +1,80 @@
+Device-Tree bindings for regulators of Active-semi ACT8945A Multi-Function Device
+
+Required properties:
+ - compatible: "active-semi,act8945a", please refer to ../mfd/act8945a.txt.
+
+Optional properties:
+- active-semi,vsel-high: Indicates if the VSEL pin is set to logic-high.
+  If this property is missing, assume the VSEL pin is set to logic-low.
+
+Optional input supply properties:
+  - vp1-supply: The input supply for REG_DCDC1
+  - vp2-supply: The input supply for REG_DCDC2
+  - vp3-supply: The input supply for REG_DCDC3
+  - inl45-supply: The input supply for REG_LDO1 and REG_LDO2
+  - inl67-supply: The input supply for REG_LDO3 and REG_LDO4
+
+Any standard regulator properties can be used to configure the single regulator.
+
+The valid names for regulators are:
+	REG_DCDC1, REG_DCDC2, REG_DCDC3, REG_LDO1, REG_LDO2, REG_LDO3, REG_LDO4.
+
+Example:
+	pmic@5b {
+		compatible = "active-semi,act8945a";
+		reg = <0x5b>;
+		status = "okay";
+
+		active-semi,vsel-high;
+
+		regulators {
+			vdd_1v35_reg: REG_DCDC1 {
+				regulator-name = "VDD_1V35";
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+			};
+
+			vdd_1v2_reg: REG_DCDC2 {
+				regulator-name = "VDD_1V2";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_reg: REG_DCDC3 {
+				regulator-name = "VDD_3V3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_fuse_reg: REG_LDO1 {
+				regulator-name = "VDD_FUSE";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <2500000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_lp_reg: REG_LDO2 {
+				regulator-name = "VDD_3V3_LP";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_led_reg: REG_LDO3 {
+				regulator-name = "VDD_LED";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_sdhc_1v8_reg: REG_LDO4 {
+				regulator-name = "VDD_SDHC_1V8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
-- 
1.7.9.5

Applied "regulator: add documentation for ACT8945A's regulator DT bindings" to the regulator tree

[Mark Brown]

The patch

   regulator: add documentation for ACT8945A's regulator DT bindings

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.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

>From a3408b7ba0efa41a944db8b0f92bbe88b7d2783b Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@atmel.com>
Date: Fri, 5 Feb 2016 12:33:31 +0800
Subject: [PATCH] regulator: add documentation for ACT8945A's regulator DT
 bindings

This patch adds documentation for the DT bindings of the regulator
subdevice of ACT8945A MFD.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 .../bindings/regulator/act8945a-regulator.txt      | 80 ++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/act8945a-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
new file mode 100644
index 000000000000..5c80a7779552
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
@@ -0,0 +1,80 @@
+Device-Tree bindings for regulators of Active-semi ACT8945A Multi-Function Device
+
+Required properties:
+ - compatible: "active-semi,act8945a", please refer to ../mfd/act8945a.txt.
+
+Optional properties:
+- active-semi,vsel-high: Indicates if the VSEL pin is set to logic-high.
+  If this property is missing, assume the VSEL pin is set to logic-low.
+
+Optional input supply properties:
+  - vp1-supply: The input supply for REG_DCDC1
+  - vp2-supply: The input supply for REG_DCDC2
+  - vp3-supply: The input supply for REG_DCDC3
+  - inl45-supply: The input supply for REG_LDO1 and REG_LDO2
+  - inl67-supply: The input supply for REG_LDO3 and REG_LDO4
+
+Any standard regulator properties can be used to configure the single regulator.
+
+The valid names for regulators are:
+	REG_DCDC1, REG_DCDC2, REG_DCDC3, REG_LDO1, REG_LDO2, REG_LDO3, REG_LDO4.
+
+Example:
+	pmic@5b {
+		compatible = "active-semi,act8945a";
+		reg = <0x5b>;
+		status = "okay";
+
+		active-semi,vsel-high;
+
+		regulators {
+			vdd_1v35_reg: REG_DCDC1 {
+				regulator-name = "VDD_1V35";
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+			};
+
+			vdd_1v2_reg: REG_DCDC2 {
+				regulator-name = "VDD_1V2";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_reg: REG_DCDC3 {
+				regulator-name = "VDD_3V3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_fuse_reg: REG_LDO1 {
+				regulator-name = "VDD_FUSE";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <2500000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_lp_reg: REG_LDO2 {
+				regulator-name = "VDD_3V3_LP";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_led_reg: REG_LDO3 {
+				regulator-name = "VDD_LED";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_sdhc_1v8_reg: REG_LDO4 {
+				regulator-name = "VDD_SDHC_1V8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
-- 
2.7.0.rc3

[PATCH v3 2/2] regulator: add documentation for ACT8945A's regulator DT bindings

[Wenyou Yang]

This patch adds documentation for the DT bindings of the regulator
subdevice of ACT8945A MFD.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
---

Changes in v3:
 - change the regulator name.

Changes in v2:
 - add Acked-by Rob Herring.

 .../bindings/regulator/act8945a-regulator.txt      |   78 ++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/act8945a-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
new file mode 100644
index 0000000..0e08a3e
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
@@ -0,0 +1,78 @@
+Device-Tree bindings for regulators of Active-semi ACT8945A Multi-Function Device
+
+Required properties:
+ - compatible: "active-semi,act8945a-regulator"
+
+Optional properties:
+- active-semi,vsel-high: Indicates if the VSEL pin is set to logic-high.
+  If this property is missing, assume the VSEL pin is set to logic-low.
+
+Optional input supply properties:
+  - vp1-supply: The input supply for REG_DCDC1
+  - vp2-supply: The input supply for REG_DCDC2
+  - vp3-supply: The input supply for REG_DCDC3
+  - inl45-supply: The input supply for REG_LDO1 and REG_LDO2
+  - inl67-supply: The input supply for REG_LDO3 and REG_LDO4
+
+Any standard regulator properties can be used to configure the single regulator.
+
+The valid names for regulators are:
+	REG_DCDC1, REG_DCDC2, REG_DCDC3, REG_LDO1, REG_LDO2, REG_LDO3, REG_LDO4.
+
+Example:
+
+	pmic {
+		compatible = "active-semi,act8945a-regulator";
+		active-semi,vsel-high;
+
+		regulators {
+			vdd_1v35_reg: REG_DCDC1 {
+				regulator-name = "VDD_1V35";
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+			};
+
+			vdd_1v2_reg: REG_DCDC2 {
+				regulator-name = "VDD_1V2";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_reg: REG_DCDC3 {
+				regulator-name = "VDD_3V3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_fuse_reg: REG_LDO1 {
+				regulator-name = "VDD_FUSE";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <2500000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_lp_reg: REG_LDO2 {
+				regulator-name = "VDD_3V3_LP";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_led_reg: REG_LDO3 {
+				regulator-name = "VDD_LED";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_sdhc_1v8_reg: REG_LDO4 {
+				regulator-name = "VDD_SDHC_1V8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
-- 
1.7.9.5

Applied "regulator: add documentation for ACT8945A's regulator DT bindings" to the regulator tree

[Mark Brown]

The patch

   regulator: add documentation for ACT8945A's regulator DT bindings

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.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

>From aa0f34826ccb991d4fa14e853bc64a361a62def6 Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@atmel.com>
Date: Wed, 20 Jan 2016 14:55:06 +0800
Subject: [PATCH] regulator: add documentation for ACT8945A's regulator DT
 bindings

This patch adds documentation for the DT bindings of the regulator
subdevice of ACT8945A MFD.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 .../bindings/regulator/act8945a-regulator.txt      | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/act8945a-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
new file mode 100644
index 000000000000..0e08a3ec128a
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/act8945a-regulator.txt
@@ -0,0 +1,78 @@
+Device-Tree bindings for regulators of Active-semi ACT8945A Multi-Function Device
+
+Required properties:
+ - compatible: "active-semi,act8945a-regulator"
+
+Optional properties:
+- active-semi,vsel-high: Indicates if the VSEL pin is set to logic-high.
+  If this property is missing, assume the VSEL pin is set to logic-low.
+
+Optional input supply properties:
+  - vp1-supply: The input supply for REG_DCDC1
+  - vp2-supply: The input supply for REG_DCDC2
+  - vp3-supply: The input supply for REG_DCDC3
+  - inl45-supply: The input supply for REG_LDO1 and REG_LDO2
+  - inl67-supply: The input supply for REG_LDO3 and REG_LDO4
+
+Any standard regulator properties can be used to configure the single regulator.
+
+The valid names for regulators are:
+	REG_DCDC1, REG_DCDC2, REG_DCDC3, REG_LDO1, REG_LDO2, REG_LDO3, REG_LDO4.
+
+Example:
+
+	pmic {
+		compatible = "active-semi,act8945a-regulator";
+		active-semi,vsel-high;
+
+		regulators {
+			vdd_1v35_reg: REG_DCDC1 {
+				regulator-name = "VDD_1V35";
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+			};
+
+			vdd_1v2_reg: REG_DCDC2 {
+				regulator-name = "VDD_1V2";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_reg: REG_DCDC3 {
+				regulator-name = "VDD_3V3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_fuse_reg: REG_LDO1 {
+				regulator-name = "VDD_FUSE";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <2500000>;
+				regulator-always-on;
+			};
+
+			vdd_3v3_lp_reg: REG_LDO2 {
+				regulator-name = "VDD_3V3_LP";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_led_reg: REG_LDO3 {
+				regulator-name = "VDD_LED";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_sdhc_1v8_reg: REG_LDO4 {
+				regulator-name = "VDD_SDHC_1V8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
-- 
2.7.0.rc3