iio: adc: remove ADT75 driver - hwmon/lm75 will take over ADT75 support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 0 insertions, 663 deletions

diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index 3bf975ac5d9d..bfe91d77fe7c 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -169,13 +169,6 @@ config AD7192
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7192.
 
-config ADT75
-	tristate "Analog Devices ADT75 temperature sensor driver"
-	depends on I2C
-	help
-	  Say yes here to build support for Analog Devices ADT75
-	  temperature sensors.
-
 config ADT7310
 	tristate "Analog Devices ADT7310 temperature sensor driver"
 	depends on SPI
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index 93dc84bee26d..be7faaa24651 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -37,7 +37,6 @@ obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7793) += ad7793.o
 obj-$(CONFIG_AD7816) += ad7816.o
 obj-$(CONFIG_AD7192) += ad7192.o
-obj-$(CONFIG_ADT75) += adt75.o
 obj-$(CONFIG_ADT7310) += adt7310.o
 obj-$(CONFIG_ADT7410) += adt7410.o
 obj-$(CONFIG_AD7280) += ad7280a.o
diff --git a/drivers/staging/iio/adc/adt75.c b/drivers/staging/iio/adc/adt75.c
deleted file mode 100644
index 08215e9edc82..000000000000
--- a/drivers/staging/iio/adc/adt75.c
+++ /dev/null
@@ -1,655 +0,0 @@
-/*
- * ADT75 digital temperature sensor driver supporting ADT75
- *
- * Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/i2c.h>
-#include <linux/module.h>
-
-#include "../iio.h"
-#include "../sysfs.h"
-
-/*
- * ADT75 registers definition
- */
-
-#define ADT75_TEMPERATURE		0
-#define ADT75_CONFIG			1
-#define ADT75_T_HYST			2
-#define ADT75_T_OS			3
-#define ADT75_ONESHOT			4
-
-/*
- * ADT75 config
- */
-#define ADT75_PD			0x1
-#define ADT75_OS_INT			0x2
-#define ADT75_OS_POLARITY		0x4
-#define ADT75_FAULT_QUEUE_MASK		0x18
-#define ADT75_FAULT_QUEUE_OFFSET	3
-#define ADT75_SMBUS_ALART		0x8
-
-/*
- * ADT75 masks
- */
-#define ADT75_VALUE_SIGN		0x800
-#define ADT75_VALUE_OFFSET		4
-#define ADT75_VALUE_FLOAT_OFFSET	4
-#define ADT75_VALUE_FLOAT_MASK		0xF
-
-
-/*
- * struct adt75_chip_info - chip specifc information
- */
-
-struct adt75_chip_info {
-	struct i2c_client *client;
-	u8  config;
-};
-
-/*
- * adt75 register access by I2C
- */
-
-static int adt75_i2c_read(struct iio_dev *dev_info, u8 reg, u8 *data)
-{
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	struct i2c_client *client = chip->client;
-	int ret = 0, len;
-
-	ret = i2c_smbus_write_byte(client, reg);
-	if (ret < 0) {
-		dev_err(&client->dev, "I2C read register address error\n");
-		return ret;
-	}
-
-	if (reg == ADT75_CONFIG || reg == ADT75_ONESHOT)
-		len = 1;
-	else
-		len = 2;
-
-	ret = i2c_master_recv(client, data, len);
-	if (ret < 0) {
-		dev_err(&client->dev, "I2C read error\n");
-		return ret;
-	}
-
-	return ret;
-}
-
-static int adt75_i2c_write(struct iio_dev *dev_info, u8 reg, u8 data)
-{
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	struct i2c_client *client = chip->client;
-	int ret = 0;
-
-	if (reg == ADT75_CONFIG || reg == ADT75_ONESHOT)
-		ret = i2c_smbus_write_byte_data(client, reg, data);
-	else
-		ret = i2c_smbus_write_word_data(client, reg, data);
-
-	if (ret < 0)
-		dev_err(&client->dev, "I2C write error\n");
-
-	return ret;
-}
-
-static ssize_t adt75_show_mode(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct adt75_chip_info *chip = iio_priv(dev_get_drvdata(dev));
-
-	if (chip->config & ADT75_PD)
-		return sprintf(buf, "power-save\n");
-	else
-		return sprintf(buf, "full\n");
-}
-
-static ssize_t adt75_store_mode(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	int ret;
-	u8 config;
-
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	config = chip->config & ~ADT75_PD;
-	if (!strcmp(buf, "full"))
-		config |= ADT75_PD;
-
-	ret = adt75_i2c_write(dev_info, ADT75_CONFIG, config);
-	if (ret)
-		return -EIO;
-
-	chip->config = config;
-
-	return ret;
-}
-
-static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
-		adt75_show_mode,
-		adt75_store_mode,
-		0);
-
-static ssize_t adt75_show_available_modes(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	return sprintf(buf, "full\npower-down\n");
-}
-
-static IIO_DEVICE_ATTR(available_modes, S_IRUGO, adt75_show_available_modes, NULL, 0);
-
-static ssize_t adt75_show_oneshot(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct adt75_chip_info *chip = iio_priv(dev_get_drvdata(dev));
-
-	return sprintf(buf, "%d\n", !!(chip->config & ADT75_ONESHOT));
-}
-
-static ssize_t adt75_store_oneshot(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	unsigned long data = 0;
-	int ret;
-	u8 config;
-
-	ret = strict_strtoul(buf, 10, &data);
-	if (ret)
-		return -EINVAL;
-
-
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	config = chip->config & ~ADT75_ONESHOT;
-	if (data)
-		config |= ADT75_ONESHOT;
-
-	ret = adt75_i2c_write(dev_info, ADT75_CONFIG, config);
-	if (ret)
-		return -EIO;
-
-	chip->config = config;
-
-	return ret;
-}
-
-static IIO_DEVICE_ATTR(oneshot, S_IRUGO | S_IWUSR,
-		adt75_show_oneshot,
-		adt75_store_oneshot,
-		0);
-
-static ssize_t adt75_show_value(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	u16 data;
-	char sign = ' ';
-	int ret;
-
-	if (chip->config & ADT75_PD) {
-		dev_err(dev, "Can't read value in power-down mode.\n");
-		return -EIO;
-	}
-
-	if (chip->config & ADT75_ONESHOT) {
-		/* write to active converter */
-		ret = i2c_smbus_write_byte(chip->client, ADT75_ONESHOT);
-		if (ret)
-			return -EIO;
-	}
-
-	ret = adt75_i2c_read(dev_info, ADT75_TEMPERATURE, (u8 *)&data);
-	if (ret)
-		return -EIO;
-
-	data = swab16(data) >> ADT75_VALUE_OFFSET;
-	if (data & ADT75_VALUE_SIGN) {
-		/* convert supplement to positive value */
-		data = (ADT75_VALUE_SIGN << 1) - data;
-		sign = '-';
-	}
-
-	return sprintf(buf, "%c%d.%.4d\n", sign,
-		(data >> ADT75_VALUE_FLOAT_OFFSET),
-		(data & ADT75_VALUE_FLOAT_MASK) * 625);
-}
-
-static IIO_DEVICE_ATTR(value, S_IRUGO, adt75_show_value, NULL, 0);
-
-static struct attribute *adt75_attributes[] = {
-	&iio_dev_attr_available_modes.dev_attr.attr,
-	&iio_dev_attr_mode.dev_attr.attr,
-	&iio_dev_attr_oneshot.dev_attr.attr,
-	&iio_dev_attr_value.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group adt75_attribute_group = {
-	.attrs = adt75_attributes,
-};
-
-/*
- * temperature bound events
- */
-
-#define IIO_EVENT_CODE_ADT75_OTI IIO_UNMOD_EVENT_CODE(IIO_TEMP,		\
-						      0,		\
-						      IIO_EV_TYPE_THRESH, \
-						      IIO_EV_DIR_FALLING)
-
-static irqreturn_t adt75_event_handler(int irq, void *private)
-{
-	iio_push_event(private,
-		       IIO_EVENT_CODE_ADT75_OTI,
-		       iio_get_time_ns());
-
-	return IRQ_HANDLED;
-}
-
-static ssize_t adt75_show_oti_mode(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	int ret;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	if (chip->config & ADT75_OS_INT)
-		return sprintf(buf, "interrupt\n");
-	else
-		return sprintf(buf, "comparator\n");
-}
-
-static ssize_t adt75_set_oti_mode(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	int ret;
-	u8 config;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	config = chip->config & ~ADT75_OS_INT;
-	if (strcmp(buf, "comparator") != 0)
-		config |= ADT75_OS_INT;
-
-	ret = adt75_i2c_write(dev_info, ADT75_CONFIG, config);
-	if (ret)
-		return -EIO;
-
-	chip->config = config;
-
-	return ret;
-}
-
-static ssize_t adt75_show_available_oti_modes(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	return sprintf(buf, "comparator\ninterrupt\n");
-}
-
-static ssize_t adt75_show_smbus_alart(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	int ret;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	return sprintf(buf, "%d\n", !!(chip->config & ADT75_SMBUS_ALART));
-}
-
-static ssize_t adt75_set_smbus_alart(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	unsigned long data = 0;
-	int ret;
-	u8 config;
-
-	ret = strict_strtoul(buf, 10, &data);
-	if (ret)
-		return -EINVAL;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	config = chip->config & ~ADT75_SMBUS_ALART;
-	if (data)
-		config |= ADT75_SMBUS_ALART;
-
-	ret = adt75_i2c_write(dev_info, ADT75_CONFIG, config);
-	if (ret)
-		return -EIO;
-
-	chip->config = config;
-
-	return ret;
-}
-
-static ssize_t adt75_show_fault_queue(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	int ret;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	return sprintf(buf, "%d\n", (chip->config & ADT75_FAULT_QUEUE_MASK) >>
-				ADT75_FAULT_QUEUE_OFFSET);
-}
-
-static ssize_t adt75_set_fault_queue(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	struct adt75_chip_info *chip = iio_priv(dev_info);
-	unsigned long data;
-	int ret;
-	u8 config;
-
-	ret = strict_strtoul(buf, 10, &data);
-	if (ret || data > 3)
-		return -EINVAL;
-
-	/* retrive ALART status */
-	ret = adt75_i2c_read(dev_info, ADT75_CONFIG, &chip->config);
-	if (ret)
-		return -EIO;
-
-	config = chip->config & ~ADT75_FAULT_QUEUE_MASK;
-	config |= (data << ADT75_FAULT_QUEUE_OFFSET);
-	ret = adt75_i2c_write(dev_info, ADT75_CONFIG, config);
-	if (ret)
-		return -EIO;
-
-	chip->config = config;
-
-	return ret;
-}
-static inline ssize_t adt75_show_t_bound(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	u16 data;
-	char sign = ' ';
-	int ret;
-
-	ret = adt75_i2c_read(dev_info, this_attr->address, (u8 *)&data);
-	if (ret)
-		return -EIO;
-
-	data = swab16(data) >> ADT75_VALUE_OFFSET;
-	if (data & ADT75_VALUE_SIGN) {
-		/* convert supplement to positive value */
-		data = (ADT75_VALUE_SIGN << 1) - data;
-		sign = '-';
-	}
-
-	return sprintf(buf, "%c%d.%.4d\n", sign,
-		(data >> ADT75_VALUE_FLOAT_OFFSET),
-		(data & ADT75_VALUE_FLOAT_MASK) * 625);
-}
-
-static inline ssize_t adt75_set_t_bound(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	long tmp1, tmp2;
-	u16 data;
-	char *pos;
-	int ret;
-
-	pos = strchr(buf, '.');
-
-	ret = strict_strtol(buf, 10, &tmp1);
-
-	if (ret || tmp1 > 127 || tmp1 < -128)
-		return -EINVAL;
-
-	if (pos) {
-		len = strlen(pos);
-		if (len > ADT75_VALUE_FLOAT_OFFSET)
-			len = ADT75_VALUE_FLOAT_OFFSET;
-		pos[len] = 0;
-		ret = strict_strtol(pos, 10, &tmp2);
-
-		if (!ret)
-			tmp2 = (tmp2 / 625) * 625;
-	}
-
-	if (tmp1 < 0)
-		data = (u16)(-tmp1);
-	else
-		data = (u16)tmp1;
-	data = (data << ADT75_VALUE_FLOAT_OFFSET) | (tmp2 & ADT75_VALUE_FLOAT_MASK);
-	if (tmp1 < 0)
-		/* convert positive value to supplyment */
-		data = (ADT75_VALUE_SIGN << 1) - data;
-	data <<= ADT75_VALUE_OFFSET;
-	data = swab16(data);
-
-	ret = adt75_i2c_write(dev_info, this_attr->address, (u8)data);
-	if (ret)
-		return -EIO;
-
-	return ret;
-}
-
-
-static IIO_DEVICE_ATTR(oti_mode,
-		       S_IRUGO | S_IWUSR,
-		       adt75_show_oti_mode, adt75_set_oti_mode, 0);
-static IIO_DEVICE_ATTR(available_oti_modes,
-		       S_IRUGO,
-		       adt75_show_available_oti_modes, NULL, 0);
-static IIO_DEVICE_ATTR(smbus_alart,
-		       S_IRUGO | S_IWUSR,
-		       adt75_show_smbus_alart, adt75_set_smbus_alart, 0);
-static IIO_DEVICE_ATTR(fault_queue,
-		       S_IRUGO | S_IWUSR,
-		       adt75_show_fault_queue, adt75_set_fault_queue, 0);
-static IIO_DEVICE_ATTR(t_os_value,
-		       S_IRUGO | S_IWUSR,
-		       adt75_show_t_bound, adt75_set_t_bound,
-		       ADT75_T_OS);
-static IIO_DEVICE_ATTR(t_hyst_value,
-		       S_IRUGO | S_IWUSR,
-		       adt75_show_t_bound, adt75_set_t_bound,
-		       ADT75_T_HYST);
-
-static struct attribute *adt75_event_attributes[] = {
-	&iio_dev_attr_oti_mode.dev_attr.attr,
-	&iio_dev_attr_available_oti_modes.dev_attr.attr,
-	&iio_dev_attr_smbus_alart.dev_attr.attr,
-	&iio_dev_attr_fault_queue.dev_attr.attr,
-	&iio_dev_attr_t_os_value.dev_attr.attr,
-	&iio_dev_attr_t_hyst_value.dev_attr.attr,
-	NULL,
-};
-
-static struct attribute_group adt75_event_attribute_group = {
-	.attrs = adt75_event_attributes,
-	.name = "events",
-};
-
-static const struct iio_info adt75_info = {
-	.attrs = &adt75_attribute_group,
-	.event_attrs = &adt75_event_attribute_group,
-	.driver_module = THIS_MODULE,
-};
-
-/*
- * device probe and remove
- */
-
-static int __devinit adt75_probe(struct i2c_client *client,
-		const struct i2c_device_id *id)
-{
-	struct adt75_chip_info *chip;
-	struct iio_dev *indio_dev;
-	int ret = 0;
-
-	indio_dev = iio_allocate_device(sizeof(*chip));
-	if (indio_dev == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	chip = iio_priv(indio_dev);
-
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
-
-	chip->client = client;
-
-	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->info = &adt75_info;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-
-	if (client->irq > 0) {
-		ret = request_threaded_irq(client->irq,
-					   NULL,
-					   &adt75_event_handler,
-					   IRQF_TRIGGER_LOW,
-					   indio_dev->name,
-					   indio_dev);
-		if (ret)
-			goto error_free_dev;
-
-		ret = adt75_i2c_read(indio_dev, ADT75_CONFIG, &chip->config);
-		if (ret) {
-			ret = -EIO;
-			goto error_unreg_irq;
-		}
-
-		/* set irq polarity low level */
-		chip->config &= ~ADT75_OS_POLARITY;
-
-		ret = adt75_i2c_write(indio_dev, ADT75_CONFIG, chip->config);
-		if (ret) {
-			ret = -EIO;
-			goto error_unreg_irq;
-		}
-	}
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_unreg_irq;
-
-	dev_info(&client->dev, "%s temperature sensor registered.\n",
-			 indio_dev->name);
-
-	return 0;
-error_unreg_irq:
-	free_irq(client->irq, indio_dev);
-error_free_dev:
-	iio_free_device(indio_dev);
-error_ret:
-	return ret;
-}
-
-static int __devexit adt75_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-	iio_device_unregister(indio_dev);
-
-	return 0;
-}
-
-static const struct i2c_device_id adt75_id[] = {
-	{ "adt75", 0 },
-	{}
-};
-
-MODULE_DEVICE_TABLE(i2c, adt75_id);
-
-static struct i2c_driver adt75_driver = {
-	.driver = {
-		.name = "adt75",
-	},
-	.probe = adt75_probe,
-	.remove = __devexit_p(adt75_remove),
-	.id_table = adt75_id,
-};
-
-static __init int adt75_init(void)
-{
-	return i2c_add_driver(&adt75_driver);
-}
-
-static __exit void adt75_exit(void)
-{
-	i2c_del_driver(&adt75_driver);
-}
-
-MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
-MODULE_DESCRIPTION("Analog Devices ADT75 digital"
-			" temperature sensor driver");
-MODULE_LICENSE("GPL v2");
-
-module_init(adt75_init);
-module_exit(adt75_exit);