Date:	Wed, 11 Jun 2014 17:34:54 +0100
From:	Jonathan Cameron <jic23@...nel.org>
To:	Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-iio@...r.kernel.org,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org
CC:	linux-kernel@...r.kernel.org, support.opensource@...semi.com
Subject: Re: [PATCH 4/8] iio: Add support for DA9150 GPADC



On June 11, 2014 12:11:28 PM GMT+01:00, Adam Thomson <Adam.Thomson.Opensource@...semi.com> wrote:
>This patch adds support for DA9150 Charger & Fuel-Gauge IC GPADC.
>
>Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@...semi.com>
Hi Adam. Silly question but what are the _ channels?

I have put in a perhaps optimistic data sheet request via the website, throwing in your name. Hope you don't mind!

Jonathan
>---
> drivers/iio/adc/Kconfig          |   9 +
> drivers/iio/adc/Makefile         |   1 +
>drivers/iio/adc/da9150-gpadc.c   | 396
>+++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/da9150/gpadc.h |  71 +++++++
> 4 files changed, 477 insertions(+)
> create mode 100644 drivers/iio/adc/da9150-gpadc.c
> create mode 100644 include/linux/mfd/da9150/gpadc.h
>
>diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
>index 24c28e3..f5e9f72 100644
>--- a/drivers/iio/adc/Kconfig
>+++ b/drivers/iio/adc/Kconfig
>@@ -105,6 +105,15 @@ config AT91_ADC
> 	help
> 	  Say yes here to build support for Atmel AT91 ADC.
>
>+config DA9150_GPADC
>+	tristate "Dialog DA9150 GPADC driver support"
>+	depends on MFD_DA9150
>+	help
>+	  Say yes here to build support for Dialog DA9150 GPADC.
>+
>+	  This driver can also be built as a module. If chosen, the module
>name
>+	  will be da9150-gpadc.
>+
> config EXYNOS_ADC
> 	tristate "Exynos ADC driver support"
> 	depends on OF
>diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
>index ab346d8..414b22f 100644
>--- a/drivers/iio/adc/Makefile
>+++ b/drivers/iio/adc/Makefile
>@@ -12,6 +12,7 @@ obj-$(CONFIG_AD7791) += ad7791.o
> obj-$(CONFIG_AD7793) += ad7793.o
> obj-$(CONFIG_AD7887) += ad7887.o
> obj-$(CONFIG_AT91_ADC) += at91_adc.o
>+obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
> obj-$(CONFIG_EXYNOS_ADC) += exynos_adc.o
> obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o
> obj-$(CONFIG_MAX1363) += max1363.o
>diff --git a/drivers/iio/adc/da9150-gpadc.c
>b/drivers/iio/adc/da9150-gpadc.c
>new file mode 100644
>index 0000000..2107f86
>--- /dev/null
>+++ b/drivers/iio/adc/da9150-gpadc.c
>@@ -0,0 +1,396 @@
>+/*
>+ * DA9150 GPADC Driver
>+ *
>+ * Copyright (c) 2014 Dialog Semiconductor
>+ *
>+ * Author: Adam Thomson <Adam.Thomson.Opensource@...semi.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/kernel.h>
>+#include <linux/slab.h>
>+#include <linux/module.h>
>+#include <linux/platform_device.h>
>+#include <linux/interrupt.h>
>+
>+#include <linux/mfd/da9150/core.h>
>+#include <linux/mfd/da9150/pdata.h>
>+#include <linux/mfd/da9150/registers.h>
>+#include <linux/mfd/da9150/gpadc.h>
>+
>+#include <linux/iio/iio.h>
>+#include <linux/iio/machine.h>
>+#include <linux/iio/driver.h>
>+
>+
>+/*
>+ * IRQ Handling
>+ */
>+
>+static irqreturn_t da9150_gpadc_irq(int irq, void *data)
>+{
>+
>+	struct da9150_gpadc *gpadc = data;
>+
>+	complete(&gpadc->complete);
>+
>+	return IRQ_HANDLED;
>+}
>+
>+
>+/*
>+ * GPADC access
>+ */
>+
>+static inline int da9150_gpadc_gpio_2v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((3 * ((raw_val * 1000) + 500)) / 2048) * 1000);
>+}
>+
>+static inline int da9150_gpadc_gpio_5v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((6 * ((raw_val * 1000) + 500)) / 1024) * 1000);
>+}
>+
>+static inline int da9150_gpadc_ibus_current_avg(int raw_val)
>+{
>+	/* Convert to uA */
>+	return (((4 * ((raw_val * 1000) + 500)) / 2048) * 1000);
>+}
>+
>+static inline int da9150_gpadc_vbus_6v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((3 * ((raw_val * 1000) + 500)) / 512) * 1000);
>+}
>+
>+static inline int da9150_gpadc_vbus_21v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((21 * ((raw_val * 1000) + 500)) / 1024) * 1000);
>+}
>+
>+static inline int da9150_gpadc_vsys_6v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((3 * ((raw_val * 1000) + 500)) / 512) * 1000);
>+}
>+
>+static inline int da9150_gpadc_vsys_1_5v_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return (((3 * ((raw_val * 1000) + 500)) / 2048) * 1000);
>+}
>+
>+static inline int da9150_gpadc_tjunc_temp(int raw_val)
>+{
>+	/* Convert to 0.1 degrees C */
>+	return (((879 - (1023 - raw_val)) * 10000) / 4420);
>+}
>+
>+static inline int da9150_gpadc_vbat_voltage_now(int raw_val)
>+{
>+	/* Convert to uV */
>+	return ((2932 * raw_val) + 1500000);
>+}
>+
>+int da9150_gpadc_read_process(int channel, int raw_val)
>+{
>+	int ret;
>+
>+	switch (channel) {
>+	case DA9150_GPADC_CHAN_GPIOA_2V:
>+	case DA9150_GPADC_CHAN_GPIOA_2V_:
>+	case DA9150_GPADC_CHAN_GPIOB_2V:
>+	case DA9150_GPADC_CHAN_GPIOB_2V_:
>+	case DA9150_GPADC_CHAN_GPIOC_2V:
>+	case DA9150_GPADC_CHAN_GPIOC_2V_:
>+	case DA9150_GPADC_CHAN_GPIOD_2V:
>+	case DA9150_GPADC_CHAN_GPIOD_2V_:
>+		ret = da9150_gpadc_gpio_2v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_IBUS_SENSE:
>+	case DA9150_GPADC_CHAN_IBUS_SENSE_:
>+		ret = da9150_gpadc_ibus_current_avg(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_VBUS_DIV:
>+		ret = da9150_gpadc_vbus_6v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_VBUS_DIV_:
>+		ret = da9150_gpadc_vbus_21v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_VSYS:
>+		ret = da9150_gpadc_vsys_6v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_VSYS_:
>+		ret = da9150_gpadc_vsys_1_5v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_GPIOA_5V:
>+	case DA9150_GPADC_CHAN_GPIOA_5V_:
>+	case DA9150_GPADC_CHAN_GPIOB_5V:
>+	case DA9150_GPADC_CHAN_GPIOB_5V_:
>+	case DA9150_GPADC_CHAN_GPIOC_5V:
>+	case DA9150_GPADC_CHAN_GPIOC_5V_:
>+	case DA9150_GPADC_CHAN_GPIOD_5V:
>+	case DA9150_GPADC_CHAN_GPIOD_5V_:
>+		ret = da9150_gpadc_gpio_5v_voltage_now(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_TJUNC_CORE:
>+	case DA9150_GPADC_CHAN_TJUNC_CORE_:
>+	case DA9150_GPADC_CHAN_TJUNC_OVP:
>+	case DA9150_GPADC_CHAN_TJUNC_OVP_:
>+		ret = da9150_gpadc_tjunc_temp(raw_val);
>+		break;
>+	case DA9150_GPADC_CHAN_VBAT:
>+		ret = da9150_gpadc_vbat_voltage_now(raw_val);
>+		break;
>+	default:
>+		/* No processing for other channels so return raw value */
>+		ret = raw_val;
>+		break;
>+	}
>+
>+	return ret;
>+}
>+
>+int da9150_gpadc_read_raw(struct iio_dev *indio_dev,
>+			  struct iio_chan_spec const *chan,
>+			  int *val, int *val2, long mask)
>+{
>+	struct da9150_gpadc *gpadc = iio_priv(indio_dev);
>+	u8 reg = 0;
>+	u8 result_regs[2];
>+	u16 result;
>+
>+	if ((mask != IIO_CHAN_INFO_RAW) && (mask != IIO_CHAN_INFO_PROCESSED))
>+		return -EINVAL;
>+
>+	if ((chan->channel < DA9150_GPADC_CHAN_GPIOA_2V) ||
>+	    (chan->channel > DA9150_GPADC_CHAN_TJUNC_OVP_))
>+		return -EINVAL;
>+
>+	mutex_lock(&gpadc->lock);
>+
>+	/* Set channel & enable measurement */
>+	reg |= DA9150_GPADC_EN_MASK;
>+	reg |= chan->channel << DA9150_GPADC_MUX_SHIFT;
>+	da9150_reg_write(gpadc->da9150, DA9150_GPADC_MAN, reg);
>+
>+	/* Consume left-over completion from a previous timeout */
>+	try_wait_for_completion(&gpadc->complete);
>+
>+	/* Check for actual completion */
>+	wait_for_completion_timeout(&gpadc->complete, msecs_to_jiffies(5));
>+
>+	/* Read result and status from device */
>+	da9150_bulk_read(gpadc->da9150, DA9150_GPADC_RES_A, 2, result_regs);
>+
>+	/* Check to make sure device really has completed reading */
>+	if (result_regs[1] & DA9150_GPADC_RUN_MASK) {
>+		mutex_unlock(&gpadc->lock);
>+		dev_err(gpadc->dev, "Timeout on channel %d of GP-ADC\n",
>+			chan->channel);
>+		return -ETIMEDOUT;
>+	}
>+
>+	mutex_unlock(&gpadc->lock);
>+
>+	/* LSBs - 2 bits */
>+	result = (result_regs[1] & DA9150_GPADC_RES_L_MASK) >>
>+		 DA9150_GPADC_RES_L_SHIFT;
>+	/* MSBs - 8 bits */
>+	result |= result_regs[0] << 2;
>+
>+	switch (mask) {
>+	case IIO_CHAN_INFO_PROCESSED:
>+		*val = da9150_gpadc_read_process(chan->channel, result);
>+		break;
>+	case IIO_CHAN_INFO_RAW:
>+		*val = result;
>+		break;
>+	}
>+
>+	return IIO_VAL_INT;
>+}
>+
>+
>+static const struct iio_info da9150_gpadc_info = {
>+	.read_raw = &da9150_gpadc_read_raw,
>+	.driver_module = THIS_MODULE,
>+};
>+
>+#define GPADC_CHANNEL(_id, _type, chan_info, _ext_name) {		\
>+	.type = _type,							\
>+	.indexed = 1,							\
>+	.channel = DA9150_GPADC_CHAN_##_id,				\
>+	.info_mask_separate = chan_info,				\
>+	.extend_name = _ext_name,					\
>+	.datasheet_name = #_id,						\
>+}
>+
>+#define GPADC_CHANNEL_RAW(_id, _type, _ext_name)	\
>+	GPADC_CHANNEL(_id, _type, BIT(IIO_CHAN_INFO_RAW), _ext_name)
>+
>+#define GPADC_CHANNEL_RAW_PROCESSED(_id, _type, _ext_name)			\
>+	GPADC_CHANNEL(_id, _type,						\
>+		      BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_PROCESSED),	\
>+		      _ext_name)
>+
>+/* Supported channels */
>+static const struct iio_chan_spec da9150_gpadc_channels[] = {
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOA_2V, IIO_VOLTAGE, "GPIOA_2V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOA_2V_, IIO_VOLTAGE, "GPIOA_2V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOB_2V, IIO_VOLTAGE, "GPIOB_2V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOB_2V_, IIO_VOLTAGE, "GPIOB_2V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOC_2V, IIO_VOLTAGE, "GPIOC_2V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOC_2V_, IIO_VOLTAGE, "GPIOC_2V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOD_2V, IIO_VOLTAGE, "GPIOD_2V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOD_2V_, IIO_VOLTAGE, "GPIOD_2V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(IBUS_SENSE, IIO_CURRENT, "IBUS"),
>+	GPADC_CHANNEL_RAW_PROCESSED(IBUS_SENSE_, IIO_CURRENT, "IBUS_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VBUS_DIV, IIO_VOLTAGE, "VBUS_6V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VBUS_DIV_, IIO_VOLTAGE, "VBUS_21V"),
>+	GPADC_CHANNEL_RAW(ID, IIO_VOLTAGE, "ID"),
>+	GPADC_CHANNEL_RAW(ID_, IIO_VOLTAGE, "ID_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VSYS, IIO_VOLTAGE, "VSYS_6V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VSYS_, IIO_VOLTAGE, "VSYS_1_5V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOA_5V, IIO_VOLTAGE, "GPIOA_5V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOA_5V_, IIO_VOLTAGE, "GPIOA_5V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOB_5V, IIO_VOLTAGE, "GPIOB_5V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOB_5V_, IIO_VOLTAGE, "GPIOB_5V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOC_5V, IIO_VOLTAGE, "GPIOC_5V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOC_5V_, IIO_VOLTAGE, "GPIOC_5V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOD_5V, IIO_VOLTAGE, "GPIOD_5V"),
>+	GPADC_CHANNEL_RAW_PROCESSED(GPIOD_5V_, IIO_VOLTAGE, "GPIOD_5V_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VBAT, IIO_VOLTAGE, "VBAT"),
>+	GPADC_CHANNEL_RAW_PROCESSED(VBAT_, IIO_VOLTAGE, "VBAT_"),
>+	GPADC_CHANNEL_RAW(TBAT, IIO_VOLTAGE, "TBAT"),
>+	GPADC_CHANNEL_RAW(TBAT_, IIO_VOLTAGE, "TBAT_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(TJUNC_CORE, IIO_TEMP, "TJUNC_CORE"),
>+	GPADC_CHANNEL_RAW_PROCESSED(TJUNC_CORE_, IIO_TEMP, "TJUNC_CORE_"),
>+	GPADC_CHANNEL_RAW_PROCESSED(TJUNC_OVP, IIO_TEMP, "TJUNC_OVP"),
>+	GPADC_CHANNEL_RAW_PROCESSED(TJUNC_OVP_, IIO_TEMP, "TJUNC_OVP_"),
>+};
>+
>+/* Default maps used by da9150-charger */
>+static struct iio_map da9150_gpadc_default_maps[] = {
>+	{
>+		.consumer_dev_name = "da9150-charger",
>+		.consumer_channel = "CHAN_IBUS",
>+		.adc_channel_label = "IBUS_SENSE",
>+	},
>+	{
>+		.consumer_dev_name = "da9150-charger",
>+		.consumer_channel = "CHAN_VBUS",
>+		.adc_channel_label = "VBUS_DIV_",
>+	},
>+	{
>+		.consumer_dev_name = "da9150-charger",
>+		.consumer_channel = "CHAN_TJUNC",
>+		.adc_channel_label = "TJUNC_CORE",
>+	},
>+	{
>+		.consumer_dev_name = "da9150-charger",
>+		.consumer_channel = "CHAN_VBAT",
>+		.adc_channel_label = "VBAT",
>+	},
>+	{},
>+};
>+
>+
>+/*
>+ * Driver top level functions
>+ */
>+
>+static int da9150_gpadc_probe(struct platform_device *pdev)
>+{
>+	struct device *dev = &pdev->dev;
>+	struct da9150 *da9150 = dev_get_drvdata(dev->parent);
>+	struct da9150_gpadc *gpadc;
>+	struct iio_dev *indio_dev;
>+
>+	int ret;
>+
>+	indio_dev = devm_iio_device_alloc(&pdev->dev,
>+					  sizeof(struct da9150_gpadc));
>+	if (!indio_dev) {
>+		dev_err(&pdev->dev, "Failed to allocate IIO device\n");
>+		return -ENOMEM;
>+	}
>+	gpadc = iio_priv(indio_dev);
>+
>+	platform_set_drvdata(pdev, indio_dev);
>+	gpadc->da9150 = da9150;
>+	gpadc->dev = dev;
>+
>+	ret = iio_map_array_register(indio_dev, da9150_gpadc_default_maps);
>+	if (ret) {
>+		dev_err(dev, "Failed to register IIO maps: %d\n", ret);
>+		goto iio_map_fail;
>+	}
>+
>+	indio_dev->name = dev_name(dev);
>+	indio_dev->dev.parent = dev;
>+	indio_dev->dev.of_node = pdev->dev.of_node;
>+	indio_dev->info = &da9150_gpadc_info;
>+	indio_dev->modes = INDIO_DIRECT_MODE;
>+	indio_dev->channels = da9150_gpadc_channels;
>+	indio_dev->num_channels = ARRAY_SIZE(da9150_gpadc_channels);
>+
>+	ret = iio_device_register(indio_dev);
>+	if (ret) {
>+		dev_err(dev, "Failed to register IIO device: %d\n", ret);
>+		goto iio_dev_fail;
>+	}
>+
>+	mutex_init(&gpadc->lock);
>+	init_completion(&gpadc->complete);
>+
>+	/* Register IRQ */
>+	ret = da9150_register_irq(pdev, gpadc, da9150_gpadc_irq, "GPADC");
>+	if (ret < 0)
>+		goto irq_fail;
>+
>+	da9150->gpadc_ready = true;
>+	return ret;
>+
>+irq_fail:
>+	iio_device_unregister(indio_dev);
>+
>+iio_dev_fail:
>+	iio_map_array_unregister(indio_dev);
>+
>+iio_map_fail:
>+	return ret;
>+}
>+
>+static int da9150_gpadc_remove(struct platform_device *pdev)
>+{
>+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
>+
>+	iio_map_array_unregister(indio_dev);
>+	iio_device_unregister(indio_dev);
>+
>+	return 0;
>+}
>+
>+static struct platform_driver da9150_gpadc_driver = {
>+	.driver = {
>+		.name = "da9150-gpadc",
>+		.owner = THIS_MODULE,
>+	},
>+	.probe = da9150_gpadc_probe,
>+	.remove = da9150_gpadc_remove,
>+};
>+
>+module_platform_driver(da9150_gpadc_driver);
>+
>+MODULE_DESCRIPTION("GPADC Driver for DA9150");
>+MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@...semi.com");
>+MODULE_LICENSE("GPL");
>diff --git a/include/linux/mfd/da9150/gpadc.h
>b/include/linux/mfd/da9150/gpadc.h
>new file mode 100644
>index 0000000..3e46164
>--- /dev/null
>+++ b/include/linux/mfd/da9150/gpadc.h
>@@ -0,0 +1,71 @@
>+/*
>+ * DA9150 GPADC Driver - GPADC Data
>+ *
>+ * Copyright (c) 2014 Dialog Semiconductor
>+ *
>+ * Author: Adam Thomson <Adam.Thomson.Opensource@...semi.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.
>+ */
>+
>+#ifndef _DA9150_GPADC_H
>+#define _DA9150_GPADC_H
>+
>+#include <linux/device.h>
>+#include <linux/iio/machine.h>
>+#include <linux/mutex.h>
>+#include <linux/completion.h>
>+
>+#include <linux/mfd/da9150/core.h>
>+
>+
>+/* Channels */
>+enum da9150_gpadc_channel {
>+	DA9150_GPADC_CHAN_GPIOA_2V = 0,
>+	DA9150_GPADC_CHAN_GPIOA_2V_,
>+	DA9150_GPADC_CHAN_GPIOB_2V,
>+	DA9150_GPADC_CHAN_GPIOB_2V_,
>+	DA9150_GPADC_CHAN_GPIOC_2V,
>+	DA9150_GPADC_CHAN_GPIOC_2V_,
>+	DA9150_GPADC_CHAN_GPIOD_2V,
>+	DA9150_GPADC_CHAN_GPIOD_2V_,
>+	DA9150_GPADC_CHAN_IBUS_SENSE,
>+	DA9150_GPADC_CHAN_IBUS_SENSE_,
>+	DA9150_GPADC_CHAN_VBUS_DIV,
>+	DA9150_GPADC_CHAN_VBUS_DIV_,
>+	DA9150_GPADC_CHAN_ID,
>+	DA9150_GPADC_CHAN_ID_,
>+	DA9150_GPADC_CHAN_VSYS,
>+	DA9150_GPADC_CHAN_VSYS_,
>+	DA9150_GPADC_CHAN_GPIOA_5V,
>+	DA9150_GPADC_CHAN_GPIOA_5V_,
>+	DA9150_GPADC_CHAN_GPIOB_5V,
>+	DA9150_GPADC_CHAN_GPIOB_5V_,
>+	DA9150_GPADC_CHAN_GPIOC_5V,
>+	DA9150_GPADC_CHAN_GPIOC_5V_,
>+	DA9150_GPADC_CHAN_GPIOD_5V,
>+	DA9150_GPADC_CHAN_GPIOD_5V_,
>+	DA9150_GPADC_CHAN_VBAT,
>+	DA9150_GPADC_CHAN_VBAT_,
>+	DA9150_GPADC_CHAN_TBAT,
>+	DA9150_GPADC_CHAN_TBAT_,
>+	DA9150_GPADC_CHAN_TJUNC_CORE,
>+	DA9150_GPADC_CHAN_TJUNC_CORE_,
>+	DA9150_GPADC_CHAN_TJUNC_OVP,
>+	DA9150_GPADC_CHAN_TJUNC_OVP_,
>+};
>+
>+
>+/* Private data */
>+struct da9150_gpadc {
>+	struct da9150 *da9150;
>+	struct device *dev;
>+
>+	struct mutex lock;
>+	struct completion complete;
>+};
>+
>+#endif /* _DA9150_GPADC_H */
>--
>1.9.3
>
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