Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon/vt1211: Add probing of alternate config index port
  hwmon/f71805f: Fix a race condition
  hwmon/abituguru: Fix unchecked return status
  hwmon: New driver for the Analog Devices ADM1029
  hwmon/w83627ehf: Add support for the W83627DHG chip
  hwmon: Use subsys_initcall
  hwmon/lm70: Make lm70_remove a __devexit function
  hwmon: Cleanup a bogus legacy comment
  hwmon: Simplify the locking model of two drivers
  hwmon: Drop unused mutexes in two drivers
  hwmon/it87: Add PWM base frequency control

17 files changed, 696 insertions, 125 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 891ef6d0b1bf..c3d4856fb618 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -73,6 +73,17 @@ config SENSORS_ADM1026
 	  This driver can also be built as a module.  If so, the module
 	  will be called adm1026.
 
+config SENSORS_ADM1029
+	tristate "Analog Devices ADM1029"
+	depends on HWMON && I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for Analog Devices ADM1029
+	  sensor chip.
+	  Very rare chip, please let us know you use it.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called adm1029.
+
 config SENSORS_ADM1031
 	tristate "Analog Devices ADM1031 and compatibles"
 	depends on HWMON && I2C && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 31661124271e..4165c27a2f25 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_SENSORS_ABITUGURU)	+= abituguru.o
 obj-$(CONFIG_SENSORS_ADM1021)	+= adm1021.o
 obj-$(CONFIG_SENSORS_ADM1025)	+= adm1025.o
 obj-$(CONFIG_SENSORS_ADM1026)	+= adm1026.o
+obj-$(CONFIG_SENSORS_ADM1029)	+= adm1029.o
 obj-$(CONFIG_SENSORS_ADM1031)	+= adm1031.o
 obj-$(CONFIG_SENSORS_ADM9240)	+= adm9240.o
 obj-$(CONFIG_SENSORS_AMS)	+= ams/
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
index b1dc63e4ac7b..bede4d990ea6 100644
--- a/drivers/hwmon/abituguru.c
+++ b/drivers/hwmon/abituguru.c
@@ -1267,30 +1267,42 @@ static int __devinit abituguru_probe(struct platform_device *pdev)
 	printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n");
 
 	/* Register sysfs hooks */
-	data->class_dev = hwmon_device_register(&pdev->dev);
-	if (IS_ERR(data->class_dev)) {
-		res = PTR_ERR(data->class_dev);
-		goto abituguru_probe_error;
-	}
 	for (i = 0; i < sysfs_attr_i; i++)
-		device_create_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
+		if (device_create_file(&pdev->dev,
+				&data->sysfs_attr[i].dev_attr))
+			goto abituguru_probe_error;
 	for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
-		device_create_file(&pdev->dev,
-			&abituguru_sysfs_attr[i].dev_attr);
+		if (device_create_file(&pdev->dev,
+				&abituguru_sysfs_attr[i].dev_attr))
+			goto abituguru_probe_error;
 
-	return 0;
+	data->class_dev = hwmon_device_register(&pdev->dev);
+	if (!IS_ERR(data->class_dev))
+		return 0; /* success */
 
+	res = PTR_ERR(data->class_dev);
 abituguru_probe_error:
+	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
+		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
+	for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
+		device_remove_file(&pdev->dev,
+			&abituguru_sysfs_attr[i].dev_attr);
 	kfree(data);
 	return res;
 }
 
 static int __devexit abituguru_remove(struct platform_device *pdev)
 {
+	int i;
 	struct abituguru_data *data = platform_get_drvdata(pdev);
 
 	platform_set_drvdata(pdev, NULL);
 	hwmon_device_unregister(data->class_dev);
+	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
+		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
+	for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
+		device_remove_file(&pdev->dev,
+			&abituguru_sysfs_attr[i].dev_attr);
 	kfree(data);
 
 	return 0;
diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c
index b4618b2705f7..ba80cd3258c6 100644
--- a/drivers/hwmon/adm1026.c
+++ b/drivers/hwmon/adm1026.c
@@ -261,7 +261,6 @@ struct pwm_data {
 struct adm1026_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
-	struct mutex lock;
 	enum chips type;
 
 	struct mutex update_lock;
diff --git a/drivers/hwmon/adm1029.c b/drivers/hwmon/adm1029.c
new file mode 100644
index 000000000000..73ce31b31511
--- /dev/null
+++ b/drivers/hwmon/adm1029.c
@@ -0,0 +1,508 @@
+/*
+ * adm1029.c - Part of lm_sensors, Linux kernel modules for hardware monitoring
+ *
+ * Copyright (C) 2006 Corentin LABBE <corentin.labbe@geomatys.fr>
+ *
+ * Based on LM83 Driver by Jean Delvare <khali@linux-fr.org>
+ *
+ * Give only processor, motherboard temperatures and fan tachs
+ * Very rare chip please let me know if you use it
+ *
+ * http://www.analog.com/UploadedFiles/Data_Sheets/ADM1029.pdf
+ *
+ *
+ * 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 version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+/*
+ * Addresses to scan
+ */
+
+static unsigned short normal_i2c[] = {
+	0x28, 0x29, 0x2a,
+	0x2b, 0x2c, 0x2d,
+	0x2e, 0x2f, I2C_CLIENT_END
+};
+
+/*
+ * Insmod parameters
+ */
+
+I2C_CLIENT_INSMOD_1(adm1029);
+
+/*
+ * The ADM1029 registers
+ * Manufacturer ID is 0x41 for Analog Devices
+ */
+
+#define ADM1029_REG_MAN_ID			0x0D
+#define ADM1029_REG_CHIP_ID			0x0E
+#define ADM1029_REG_CONFIG			0x01
+#define ADM1029_REG_NB_FAN_SUPPORT		0x02
+
+#define ADM1029_REG_TEMP_DEVICES_INSTALLED	0x06
+
+#define ADM1029_REG_LOCAL_TEMP			0xA0
+#define ADM1029_REG_REMOTE1_TEMP		0xA1
+#define ADM1029_REG_REMOTE2_TEMP		0xA2
+
+#define ADM1029_REG_LOCAL_TEMP_HIGH		0x90
+#define ADM1029_REG_REMOTE1_TEMP_HIGH		0x91
+#define ADM1029_REG_REMOTE2_TEMP_HIGH		0x92
+
+#define ADM1029_REG_LOCAL_TEMP_LOW		0x98
+#define ADM1029_REG_REMOTE1_TEMP_LOW		0x99
+#define ADM1029_REG_REMOTE2_TEMP_LOW		0x9A
+
+#define ADM1029_REG_FAN1			0x70
+#define ADM1029_REG_FAN2			0x71
+
+#define ADM1029_REG_FAN1_MIN			0x78
+#define ADM1029_REG_FAN2_MIN			0x79
+
+#define ADM1029_REG_FAN1_CONFIG			0x68
+#define ADM1029_REG_FAN2_CONFIG			0x69
+
+#define TEMP_FROM_REG(val)	((val) * 1000)
+
+#define DIV_FROM_REG(val)	( 1 << (((val) >> 6) - 1))
+
+/* Registers to be checked by adm1029_update_device() */
+static const u8 ADM1029_REG_TEMP[] = {
+	ADM1029_REG_LOCAL_TEMP,
+	ADM1029_REG_REMOTE1_TEMP,
+	ADM1029_REG_REMOTE2_TEMP,
+	ADM1029_REG_LOCAL_TEMP_HIGH,
+	ADM1029_REG_REMOTE1_TEMP_HIGH,
+	ADM1029_REG_REMOTE2_TEMP_HIGH,
+	ADM1029_REG_LOCAL_TEMP_LOW,
+	ADM1029_REG_REMOTE1_TEMP_LOW,
+	ADM1029_REG_REMOTE2_TEMP_LOW,
+};
+
+static const u8 ADM1029_REG_FAN[] = {
+	ADM1029_REG_FAN1,
+	ADM1029_REG_FAN2,
+	ADM1029_REG_FAN1_MIN,
+	ADM1029_REG_FAN2_MIN,
+};
+
+static const u8 ADM1029_REG_FAN_DIV[] = {
+	ADM1029_REG_FAN1_CONFIG,
+	ADM1029_REG_FAN2_CONFIG,
+};
+
+/*
+ * Functions declaration
+ */
+
+static int adm1029_attach_adapter(struct i2c_adapter *adapter);
+static int adm1029_detect(struct i2c_adapter *adapter, int address, int kind);
+static int adm1029_detach_client(struct i2c_client *client);
+static struct adm1029_data *adm1029_update_device(struct device *dev);
+static int adm1029_init_client(struct i2c_client *client);
+
+/*
+ * Driver data (common to all clients)
+ */
+
+static struct i2c_driver adm1029_driver = {
+	.driver = {
+		.name = "adm1029",
+	},
+	.attach_adapter = adm1029_attach_adapter,
+	.detach_client = adm1029_detach_client,
+};
+
+/*
+ * Client data (each client gets its own)
+ */
+
+struct adm1029_data {
+	struct i2c_client client;
+	struct class_device *class_dev;
+	struct mutex update_lock;
+	char valid;		/* zero until following fields are valid */
+	unsigned long last_updated;	/* in jiffies */
+
+	/* registers values, signed for temperature, unsigned for other stuff */
+	s8 temp[ARRAY_SIZE(ADM1029_REG_TEMP)];
+	u8 fan[ARRAY_SIZE(ADM1029_REG_FAN)];
+	u8 fan_div[ARRAY_SIZE(ADM1029_REG_FAN_DIV)];
+};
+
+/*
+ * Sysfs stuff
+ */
+
+static ssize_t
+show_temp(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct adm1029_data *data = adm1029_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
+}
+
+static ssize_t
+show_fan(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct adm1029_data *data = adm1029_update_device(dev);
+	u16 val;
+	if (data->fan[attr->index] == 0 || data->fan_div[attr->index] == 0
+	    || data->fan[attr->index] == 255) {
+		return sprintf(buf, "0\n");
+	}
+
+	val = 1880 * 120 / DIV_FROM_REG(data->fan_div[attr->index])
+	    / data->fan[attr->index];
+	return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t
+show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct adm1029_data *data = adm1029_update_device(dev);
+	if (data->fan_div[attr->index] == 0)
+		return sprintf(buf, "0\n");
+	return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
+}
+
+static ssize_t set_fan_div(struct device *dev,
+	    struct device_attribute *devattr, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm1029_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	long val = simple_strtol(buf, NULL, 10);
+	u8 reg;
+
+	mutex_lock(&data->update_lock);
+
+	/*Read actual config */
+	reg = i2c_smbus_read_byte_data(client,
+				       ADM1029_REG_FAN_DIV[attr->index]);
+
+	switch (val) {
+	case 1:
+		val = 1;
+		break;
+	case 2:
+		val = 2;
+		break;
+	case 4:
+		val = 3;
+		break;
+	default:
+		mutex_unlock(&data->update_lock);
+		dev_err(&client->dev, "fan_div value %ld not "
+			"supported. Choose one of 1, 2 or 4!\n", val);
+		return -EINVAL;
+	}
+	/* Update the value */
+	reg = (reg & 0x3F) | (val << 6);
+
+	/* Write value */
+	i2c_smbus_write_byte_data(client,
+				  ADM1029_REG_FAN_DIV[attr->index], reg);
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+/*
+Access rights on sysfs, S_IRUGO stand for Is Readable by User, Group and Others
+			S_IWUSR stand for Is Writable by User
+*/
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
+
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp, NULL, 8);
+
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
+
+static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan, NULL, 3);
+
+static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
+			  show_fan_div, set_fan_div, 0);
+static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+			  show_fan_div, set_fan_div, 1);
+
+static struct attribute *adm1029_attributes[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_min.dev_attr.attr,
+	&sensor_dev_attr_temp3_max.dev_attr.attr,
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan1_min.dev_attr.attr,
+	&sensor_dev_attr_fan2_min.dev_attr.attr,
+	&sensor_dev_attr_fan1_div.dev_attr.attr,
+	&sensor_dev_attr_fan2_div.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group adm1029_group = {
+	.attrs = adm1029_attributes,
+};
+
+/*
+ * Real code
+ */
+
+static int adm1029_attach_adapter(struct i2c_adapter *adapter)
+{
+	if (!(adapter->class & I2C_CLASS_HWMON))
+		return 0;
+	return i2c_probe(adapter, &addr_data, adm1029_detect);
+}
+
+/*
+ * The following function does more than just detection. If detection
+ * succeeds, it also registers the new chip.
+ */
+
+static int adm1029_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+	struct i2c_client *client;
+	struct adm1029_data *data;
+	int err = 0;
+	const char *name = "";
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		goto exit;
+
+	if (!(data = kzalloc(sizeof(struct adm1029_data), GFP_KERNEL))) {
+		err = -ENOMEM;
+		goto exit;
+	}
+
+	client = &data->client;
+	i2c_set_clientdata(client, data);
+	client->addr = address;
+	client->adapter = adapter;
+	client->driver = &adm1029_driver;
+
+	/* Now we do the detection and identification. A negative kind
+	 * means that the driver was loaded with no force parameter
+	 * (default), so we must both detect and identify the chip
+	 * (actually there is only one possible kind of chip for now, adm1029).
+	 * A zero kind means that the driver was loaded with the force
+	 * parameter, the detection step shall be skipped. A positive kind
+	 * means that the driver was loaded with the force parameter and a
+	 * given kind of chip is requested, so both the detection and the
+	 * identification steps are skipped. */
+
+	/* Default to an adm1029 if forced */
+	if (kind == 0)
+		kind = adm1029;
+
+	/* ADM1029 doesn't have CHIP ID, check just MAN ID
+	 * For better detection we check also ADM1029_TEMP_DEVICES_INSTALLED,
+	 * ADM1029_REG_NB_FAN_SUPPORT and compare it with possible values
+	 * documented
+	 */
+
+	if (kind <= 0) {	/* identification */
+		u8 man_id, chip_id, temp_devices_installed, nb_fan_support;
+
+		man_id = i2c_smbus_read_byte_data(client, ADM1029_REG_MAN_ID);
+		chip_id = i2c_smbus_read_byte_data(client, ADM1029_REG_CHIP_ID);
+		temp_devices_installed = i2c_smbus_read_byte_data(client,
+					ADM1029_REG_TEMP_DEVICES_INSTALLED);
+		nb_fan_support = i2c_smbus_read_byte_data(client,
+						ADM1029_REG_NB_FAN_SUPPORT);
+		/* 0x41 is Analog Devices */
+		if (man_id == 0x41 && (temp_devices_installed & 0xf9) == 0x01
+		    && nb_fan_support == 0x03) {
+			if ((chip_id & 0xF0) == 0x00) {
+				kind = adm1029;
+			} else {
+				/* There are no "official" CHIP ID, so actually
+				 * we use Major/Minor revision for that */
+				printk(KERN_INFO
+				       "adm1029: Unknown major revision %x, "
+				       "please let us know\n", chip_id);
+			}
+		}
+
+		if (kind <= 0) {	/* identification failed */
+			pr_debug("adm1029: Unsupported chip (man_id=0x%02X, "
+				 "chip_id=0x%02X)\n", man_id, chip_id);
+			goto exit_free;
+		}
+	}
+
+	if (kind == adm1029) {
+		name = "adm1029";
+	}
+
+	/* We can fill in the remaining client fields */
+	strlcpy(client->name, name, I2C_NAME_SIZE);
+	mutex_init(&data->update_lock);
+
+	/* Tell the I2C layer a new client has arrived */
+	if ((err = i2c_attach_client(client)))
+		goto exit_free;
+
+	/*
+	 * Initialize the ADM1029 chip
+	 * Check config register
+	 */
+	if (adm1029_init_client(client) == 0)
+		goto exit_detach;
+
+	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&client->dev.kobj, &adm1029_group)))
+		goto exit_detach;
+
+	data->class_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->class_dev)) {
+		err = PTR_ERR(data->class_dev);
+		goto exit_remove_files;
+	}
+
+	return 0;
+
+ exit_remove_files:
+	sysfs_remove_group(&client->dev.kobj, &adm1029_group);
+ exit_detach:
+	i2c_detach_client(client);
+ exit_free:
+	kfree(data);
+ exit:
+	return err;
+}
+
+static int adm1029_init_client(struct i2c_client *client)
+{
+	u8 config;
+	config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
+	if ((config & 0x10) == 0) {
+		i2c_smbus_write_byte_data(client, ADM1029_REG_CONFIG,
+					  config | 0x10);
+	}
+	/* recheck config */
+	config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
+	if ((config & 0x10) == 0) {
+		dev_err(&client->dev, "Initialization failed!\n");
+		return 0;
+	}
+	return 1;
+}
+
+static int adm1029_detach_client(struct i2c_client *client)
+{
+	struct adm1029_data *data = i2c_get_clientdata(client);
+	int err;
+
+	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &adm1029_group);
+
+	if ((err = i2c_detach_client(client)))
+		return err;
+
+	kfree(data);
+	return 0;
+}
+
+/*
+function that update the status of the chips (temperature for exemple)
+*/
+static struct adm1029_data *adm1029_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm1029_data *data = i2c_get_clientdata(client);
+
+	mutex_lock(&data->update_lock);
+	/*
+	 * Use the "cache" Luke, don't recheck values
+	 * if there are already checked not a long time later
+	 */
+	if (time_after(jiffies, data->last_updated + HZ * 2)
+	 || !data->valid) {
+		int nr;
+
+		dev_dbg(&client->dev, "Updating adm1029 data\n");
+
+		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_TEMP); nr++) {
+			data->temp[nr] =
+			    i2c_smbus_read_byte_data(client,
+						     ADM1029_REG_TEMP[nr]);
+		}
+		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN); nr++) {
+			data->fan[nr] =
+			    i2c_smbus_read_byte_data(client,
+						     ADM1029_REG_FAN[nr]);
+		}
+		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN_DIV); nr++) {
+			data->fan_div[nr] =
+			    i2c_smbus_read_byte_data(client,
+						     ADM1029_REG_FAN_DIV[nr]);
+		}
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+	return data;
+}
+
+/*
+	Common module stuff
+*/
+static int __init sensors_adm1029_init(void)
+{
+
+	return i2c_add_driver(&adm1029_driver);
+}
+
+static void __exit sensors_adm1029_exit(void)
+{
+
+	i2c_del_driver(&adm1029_driver);
+}
+
+MODULE_AUTHOR("Corentin LABBE <corentin.labbe@geomatys.fr>");
+MODULE_DESCRIPTION("adm1029 driver");
+MODULE_LICENSE("GPL v2");
+
+module_init(sensors_adm1029_init);
+module_exit(sensors_adm1029_exit);
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
index a272cae8f60e..7c2973487122 100644
--- a/drivers/hwmon/f71805f.c
+++ b/drivers/hwmon/f71805f.c
@@ -146,7 +146,6 @@ superio_exit(int base)
 struct f71805f_data {
 	unsigned short addr;
 	const char *name;
-	struct mutex lock;
 	struct class_device *class_dev;
 
 	struct mutex update_lock;
@@ -271,50 +270,42 @@ static inline u8 temp_to_reg(long val)
  * Device I/O access
  */
 
+/* Must be called with data->update_lock held, except during initialization */
 static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
 {
-	u8 val;
-
-	mutex_lock(&data->lock);
 	outb(reg, data->addr + ADDR_REG_OFFSET);
-	val = inb(data->addr + DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
-
-	return val;
+	return inb(data->addr + DATA_REG_OFFSET);
 }
 
+/* Must be called with data->update_lock held, except during initialization */
 static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
 {
-	mutex_lock(&data->lock);
 	outb(reg, data->addr + ADDR_REG_OFFSET);
 	outb(val, data->addr + DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
 }
 
 /* It is important to read the MSB first, because doing so latches the
-   value of the LSB, so we are sure both bytes belong to the same value. */
+   value of the LSB, so we are sure both bytes belong to the same value.
+   Must be called with data->update_lock held, except during initialization */
 static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
 {
 	u16 val;
 
-	mutex_lock(&data->lock);
 	outb(reg, data->addr + ADDR_REG_OFFSET);
 	val = inb(data->addr + DATA_REG_OFFSET) << 8;
 	outb(++reg, data->addr + ADDR_REG_OFFSET);
 	val |= inb(data->addr + DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
 
 	return val;
 }
 
+/* Must be called with data->update_lock held, except during initialization */
 static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
 {
-	mutex_lock(&data->lock);
 	outb(reg, data->addr + ADDR_REG_OFFSET);
 	outb(val >> 8, data->addr + DATA_REG_OFFSET);
 	outb(++reg, data->addr + ADDR_REG_OFFSET);
 	outb(val & 0xff, data->addr + DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
 }
 
 static struct f71805f_data *f71805f_update_device(struct device *dev)
@@ -1150,7 +1141,6 @@ static int __devinit f71805f_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 	data->addr = res->start;
-	mutex_init(&data->lock);
 	data->name = names[sio_data->kind];
 	mutex_init(&data->update_lock);
 
@@ -1300,14 +1290,11 @@ static int __init f71805f_device_add(unsigned short address,
 	if (err) {
 		printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
 		       err);
-		goto exit_kfree_data;
+		goto exit_device_put;
 	}
 
 	return 0;
 
-exit_kfree_data:
-	kfree(pdev->dev.platform_data);
-	pdev->dev.platform_data = NULL;
 exit_device_put:
 	platform_device_put(pdev);
 exit:
@@ -1400,10 +1387,7 @@ exit:
 
 static void __exit f71805f_exit(void)
 {
-	kfree(pdev->dev.platform_data);
-	pdev->dev.platform_data = NULL;
 	platform_device_unregister(pdev);
-
 	platform_driver_unregister(&f71805f_driver);
 }
 
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 106fa01cdb60..affcc00764d3 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -101,7 +101,7 @@ static void __exit hwmon_exit(void)
 	class_destroy(hwmon_class);
 }
 
-module_init(hwmon_init);
+subsys_initcall(hwmon_init);
 module_exit(hwmon_exit);
 
 EXPORT_SYMBOL_GPL(hwmon_device_register);
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 1ed8b7e2c35d..62afc63708a5 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -202,15 +202,23 @@ static int DIV_TO_REG(int val)
 }
 #define DIV_FROM_REG(val) (1 << (val))
 
+static const unsigned int pwm_freq[8] = {
+	48000000 / 128,
+	24000000 / 128,
+	12000000 / 128,
+	8000000 / 128,
+	6000000 / 128,
+	3000000 / 128,
+	1500000 / 128,
+	750000 / 128,
+};
+
 
-/* For each registered IT87, we need to keep some data in memory. That
-   data is pointed to by it87_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new it87 client is
-   allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct it87_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
-	struct mutex lock;
 	enum chips type;
 
 	struct mutex update_lock;
@@ -232,6 +240,7 @@ struct it87_data {
 	u8 vrm;
 	u32 alarms;		/* Register encoding, combined */
 	u8 fan_main_ctrl;	/* Register value */
+	u8 fan_ctl;		/* Register value */
 	u8 manual_pwm_ctl[3];   /* manual PWM value set by user */
 };
 
@@ -519,6 +528,14 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 	struct it87_data *data = it87_update_device(dev);
 	return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]);
 }
+static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
+		char *buf)
+{
+	struct it87_data *data = it87_update_device(dev);
+	int index = (data->fan_ctl >> 4) & 0x07;
+
+	return sprintf(buf, "%u\n", pwm_freq[index]);
+}
 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 		const char *buf, size_t count)
 {
@@ -528,9 +545,10 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct it87_data *data = i2c_get_clientdata(client);
 	int val = simple_strtol(buf, NULL, 10);
-	u8 reg = it87_read_value(client, IT87_REG_FAN_DIV);
+	u8 reg;
 
 	mutex_lock(&data->update_lock);
+	reg = it87_read_value(client, IT87_REG_FAN_DIV);
 	switch (nr) {
 	case 0: data->fan_div[nr] = reg & 0x07; break;
 	case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
@@ -639,6 +657,28 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 	mutex_unlock(&data->update_lock);
 	return count;
 }
+static ssize_t set_pwm_freq(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct it87_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int i;
+
+	/* Search for the nearest available frequency */
+	for (i = 0; i < 7; i++) {
+		if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
+			break;
+	}
+
+	mutex_lock(&data->update_lock);
+	data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL) & 0x8f;
+	data->fan_ctl |= i << 4;
+	it87_write_value(client, IT87_REG_FAN_CTL, data->fan_ctl);
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
 
 #define show_fan_offset(offset)					\
 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,		\
@@ -656,7 +696,10 @@ show_fan_offset(3);
 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR,	\
 		show_pwm_enable, set_pwm_enable, offset - 1);		\
 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,		\
-		show_pwm, set_pwm, offset - 1);
+		show_pwm, set_pwm, offset - 1);				\
+static DEVICE_ATTR(pwm##offset##_freq,					\
+		(offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO),		\
+		show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL));
 
 show_pwm_offset(1);
 show_pwm_offset(2);
@@ -904,7 +947,6 @@ static int it87_detect(struct i2c_adapter *adapter)
 	}
 
 	new_client = &data->client;
-	mutex_init(&data->lock);
 	i2c_set_clientdata(new_client, data);
 	new_client->addr = isa_address;
 	new_client->adapter = adapter;
@@ -1021,7 +1063,13 @@ static int it87_detect(struct i2c_adapter *adapter)
 		 || (err = device_create_file(&new_client->dev,
 		     &sensor_dev_attr_pwm2.dev_attr))
 		 || (err = device_create_file(&new_client->dev,
-		     &sensor_dev_attr_pwm3.dev_attr)))
+		     &sensor_dev_attr_pwm3.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &dev_attr_pwm1_freq))
+		 || (err = device_create_file(&new_client->dev,
+		     &dev_attr_pwm2_freq))
+		 || (err = device_create_file(&new_client->dev,
+		     &dev_attr_pwm3_freq)))
 			goto ERROR4;
 	}
 
@@ -1076,33 +1124,22 @@ static int it87_detach_client(struct i2c_client *client)
 	return 0;
 }
 
-/* ISA access must be locked explicitly!
+/* Must be called with data->update_lock held, except during initialization.
    We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
    would slow down the IT87 access and should not be necessary. */
 static int it87_read_value(struct i2c_client *client, u8 reg)
 {
-	struct it87_data *data = i2c_get_clientdata(client);
-	int res;
-
-	mutex_lock(&data->lock);
 	outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
-	res = inb_p(client->addr + IT87_DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
-
-	return res;
+	return inb_p(client->addr + IT87_DATA_REG_OFFSET);
 }
 
-/* ISA access must be locked explicitly!
+/* Must be called with data->update_lock held, except during initialization.
    We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
    would slow down the IT87 access and should not be necessary. */
 static void it87_write_value(struct i2c_client *client, u8 reg, u8 value)
 {
-	struct it87_data *data = i2c_get_clientdata(client);
-
-	mutex_lock(&data->lock);
 	outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
 	outb_p(value, client->addr + IT87_DATA_REG_OFFSET);
-	mutex_unlock(&data->lock);
 }
 
 /* Return 1 if and only if the PWM interface is safe to use */
@@ -1316,6 +1353,7 @@ static struct it87_data *it87_update_device(struct device *dev)
 			(it87_read_value(client, IT87_REG_ALARM2) << 8) |
 			(it87_read_value(client, IT87_REG_ALARM3) << 16);
 		data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL);
+		data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL);
 
 		data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE);
 		/* The 8705 does not have VID capability */
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c
index 6ba84731b9cd..7eaae3834e15 100644
--- a/drivers/hwmon/lm70.c
+++ b/drivers/hwmon/lm70.c
@@ -126,7 +126,7 @@ out_dev_reg_failed:
 	return status;
 }
 
-static int __exit lm70_remove(struct spi_device *spi)
+static int __devexit lm70_remove(struct spi_device *spi)
 {
 	struct lm70 *p_lm70 = dev_get_drvdata(&spi->dev);
 
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index 73bc2ffc598d..886786c33916 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -125,10 +125,8 @@ static inline int TEMP_FROM_REG(s8 val)
    bad. Quite a lot of bookkeeping is done. A real driver can often cut
    some corners. */
 
-/* For each registered LM78, we need to keep some data in memory. That
-   data is pointed to by lm78_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new lm78 client is
-   allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct lm78_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 2c3293cf69d1..20a8c648280d 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -298,11 +298,6 @@ static int ZONE_TO_REG( int zone )
 #define LM85_DATA_INTERVAL  (HZ + HZ / 2)
 #define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)
 
-/* For each registered LM85, we need to keep some data in memory. That
-   data is pointed to by lm85_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new lm85 client is
-   allocated. */
-
 /* LM85 can automatically adjust fan speeds based on temperature
  * This structure encapsulates an entire Zone config.  There are
  * three zones (one for each temperature input) on the lm85
@@ -329,10 +324,11 @@ struct lm85_autofan {
 	u8 min_off;	/* Min PWM or OFF below "limit", flag */
 };
 
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct lm85_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
-	struct mutex lock;
 	enum chips type;
 
 	struct mutex update_lock;
diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 95a4b5d9eaf2..3f400263fc0f 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -162,10 +162,8 @@ static inline u8 DIV_TO_REG(int val)
 }
 #define DIV_FROM_REG(val) (1 << (val))
 
-/* For the SIS5595, we need to keep some data in memory. That
-   data is pointed to by sis5595_list[NR]->data. The structure itself is
-   dynamically allocated, at the time when the new sis5595 client is
-   allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct sis5595_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c
index f8acada0537a..9a440c8cc520 100644
--- a/drivers/hwmon/via686a.c
+++ b/drivers/hwmon/via686a.c
@@ -292,9 +292,8 @@ static inline long TEMP_FROM_REG10(u16 val)
 #define DIV_FROM_REG(val) (1 << (val))
 #define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
 
-/* For the VIA686A, we need to keep some data in memory.
-   The structure is dynamically allocated, at the same time when a new
-   via686a client is allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct via686a_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
diff --git a/drivers/hwmon/vt1211.c b/drivers/hwmon/vt1211.c
index 25cc56003d7a..89c23d6add7b 100644
--- a/drivers/hwmon/vt1211.c
+++ b/drivers/hwmon/vt1211.c
@@ -178,9 +178,10 @@ struct vt1211_data {
  * Super-I/O constants and functions
  * --------------------------------------------------------------------- */
 
-/* Configuration & data index port registers */
-#define SIO_REG_CIP		0x2e
-#define SIO_REG_DIP		0x2f
+/* Configuration index port registers
+ * The vt1211 can live at 2 different addresses so we need to probe both */
+#define SIO_REG_CIP1		0x2e
+#define SIO_REG_CIP2		0x4e
 
 /* Configuration registers */
 #define SIO_VT1211_LDN		0x07	/* logical device number */
@@ -193,33 +194,33 @@ struct vt1211_data {
 /* VT1211 logical device numbers */
 #define SIO_VT1211_LDN_HWMON	0x0b	/* HW monitor */
 
-static inline void superio_outb(int reg, int val)
+static inline void superio_outb(int sio_cip, int reg, int val)
 {
-	outb(reg, SIO_REG_CIP);
-	outb(val, SIO_REG_DIP);
+	outb(reg, sio_cip);
+	outb(val, sio_cip + 1);
 }
 
-static inline int superio_inb(int reg)
+static inline int superio_inb(int sio_cip, int reg)
 {
-	outb(reg, SIO_REG_CIP);
-	return inb(SIO_REG_DIP);
+	outb(reg, sio_cip);
+	return inb(sio_cip + 1);
 }
 
-static inline void superio_select(int ldn)
+static inline void superio_select(int sio_cip, int ldn)
 {
-	outb(SIO_VT1211_LDN, SIO_REG_CIP);
-	outb(ldn, SIO_REG_DIP);
+	outb(SIO_VT1211_LDN, sio_cip);
+	outb(ldn, sio_cip + 1);
 }
 
-static inline void superio_enter(void)
+static inline void superio_enter(int sio_cip)
 {
-	outb(0x87, SIO_REG_CIP);
-	outb(0x87, SIO_REG_CIP);
+	outb(0x87, sio_cip);
+	outb(0x87, sio_cip);
 }
 
-static inline void superio_exit(void)
+static inline void superio_exit(int sio_cip)
 {
-	outb(0xaa, SIO_REG_CIP);
+	outb(0xaa, sio_cip);
 }
 
 /* ---------------------------------------------------------------------
@@ -1263,26 +1264,26 @@ EXIT:
 	return err;
 }
 
-static int __init vt1211_find(unsigned short *address)
+static int __init vt1211_find(int sio_cip, unsigned short *address)
 {
 	int err = -ENODEV;
 
-	superio_enter();
+	superio_enter(sio_cip);
 
-	if (superio_inb(SIO_VT1211_DEVID) != SIO_VT1211_ID) {
+	if (superio_inb(sio_cip, SIO_VT1211_DEVID) != SIO_VT1211_ID) {
 		goto EXIT;
 	}
 
-	superio_select(SIO_VT1211_LDN_HWMON);
+	superio_select(sio_cip, SIO_VT1211_LDN_HWMON);
 
-	if ((superio_inb(SIO_VT1211_ACTIVE) & 1) == 0) {
+	if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) {
 		printk(KERN_WARNING DRVNAME ": HW monitor is disabled, "
 		       "skipping\n");
 		goto EXIT;
 	}
 
-	*address = ((superio_inb(SIO_VT1211_BADDR) << 8) |
-		    (superio_inb(SIO_VT1211_BADDR + 1))) & 0xff00;
+	*address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) |
+		    (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00;
 	if (*address == 0) {
 		printk(KERN_WARNING DRVNAME ": Base address is not set, "
 		       "skipping\n");
@@ -1291,10 +1292,11 @@ static int __init vt1211_find(unsigned short *address)
 
 	err = 0;
 	printk(KERN_INFO DRVNAME ": Found VT1211 chip at 0x%04x, "
-	       "revision %u\n", *address, superio_inb(SIO_VT1211_DEVREV));
+	       "revision %u\n", *address,
+	       superio_inb(sio_cip, SIO_VT1211_DEVREV));
 
 EXIT:
-	superio_exit();
+	superio_exit(sio_cip);
 	return err;
 }
 
@@ -1303,8 +1305,8 @@ static int __init vt1211_init(void)
 	int err;
 	unsigned short address = 0;
 
-	err = vt1211_find(&address);
-	if (err) {
+	if ((err = vt1211_find(SIO_REG_CIP1, &address)) &&
+	    (err = vt1211_find(SIO_REG_CIP2, &address))) {
 		goto EXIT;
 	}
 
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 212a1558c63b..da5828f2dfc2 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -32,8 +32,10 @@
 
     Supports the following chips:
 
-    Chip        #vin    #fan    #pwm    #temp   chip_id    man_id
-    w83627ehf   10      5       4       3       0x88,0xa1  0x5ca3
+    Chip        #vin    #fan    #pwm    #temp  chip IDs       man ID
+    w83627ehf   10      5       4       3      0x8850 0x88    0x5ca3
+                                               0x8860 0xa1
+    w83627dhg    9      5       4       3      0xa020 0xc1    0x5ca3
 */
 
 #include <linux/module.h>
@@ -55,8 +57,18 @@ static unsigned short address;
  * Super-I/O constants and functions
  */
 
+/*
+ * The three following globals are initialized in w83627ehf_find(), before
+ * the i2c-isa device is created. Otherwise, they could be stored in
+ * w83627ehf_data. This is ugly, but necessary, and when the driver is next
+ * updated to become a platform driver, the globals will disappear.
+ */
 static int REG;		/* The register to read/write */
 static int VAL;		/* The value to read/write */
+/* The w83627ehf/ehg have 10 voltage inputs, but the w83627dhg has 9. This
+ * value is also used in w83627ehf_detect() to export a device name in sysfs
+ * (e.g. w83627ehf or w83627dhg) */
+static int w83627ehf_num_in;
 
 #define W83627EHF_LD_HWM	0x0b
 
@@ -65,8 +77,10 @@ static int VAL;		/* The value to read/write */
 #define SIO_REG_ENABLE		0x30	/* Logical device enable */
 #define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */
 
-#define SIO_W83627EHF_ID	0x8840
-#define SIO_ID_MASK		0xFFC0
+#define SIO_W83627EHF_ID	0x8850
+#define SIO_W83627EHG_ID	0x8860
+#define SIO_W83627DHG_ID	0xa020
+#define SIO_ID_MASK		0xFFF0
 
 static inline void
 superio_outb(int reg, int val)
@@ -115,8 +129,12 @@ superio_exit(void)
 
 #define W83627EHF_REG_BANK		0x4E
 #define W83627EHF_REG_CONFIG		0x40
-#define W83627EHF_REG_CHIP_ID		0x49
-#define W83627EHF_REG_MAN_ID		0x4F
+
+/* Not currently used:
+ * REG_MAN_ID has the value 0x5ca3 for all supported chips.
+ * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
+ * REG_MAN_ID is at port 0x4f
+ * REG_CHIP_ID is at port 0x58 */
 
 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
@@ -429,7 +447,7 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 		}
 
 		/* Measured voltages and limits */
-		for (i = 0; i < 10; i++) {
+		for (i = 0; i < w83627ehf_num_in; i++) {
 			data->in[i] = w83627ehf_read_value(client,
 				      W83627EHF_REG_IN(i));
 			data->in_min[i] = w83627ehf_read_value(client,
@@ -1121,7 +1139,7 @@ static void w83627ehf_device_remove_files(struct device *dev)
 		device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
 	for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
 		device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
-	for (i = 0; i < 10; i++) {
+	for (i = 0; i < w83627ehf_num_in; i++) {
 		device_remove_file(dev, &sda_in_input[i].dev_attr);
 		device_remove_file(dev, &sda_in_alarm[i].dev_attr);
 		device_remove_file(dev, &sda_in_min[i].dev_attr);
@@ -1196,7 +1214,11 @@ static int w83627ehf_detect(struct i2c_adapter *adapter)
 	client->flags = 0;
 	dev = &client->dev;
 
-	strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE);
+	if (w83627ehf_num_in == 9)
+		strlcpy(client->name, "w83627dhg", I2C_NAME_SIZE);
+	else	/* just say ehf. 627EHG is 627EHF in lead-free packaging. */
+		strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE);
+
 	data->valid = 0;
 	mutex_init(&data->update_lock);
 
@@ -1246,7 +1268,7 @@ static int w83627ehf_detect(struct i2c_adapter *adapter)
 				goto exit_remove;
 		}
 
-	for (i = 0; i < 10; i++)
+	for (i = 0; i < w83627ehf_num_in; i++)
 		if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
 			|| (err = device_create_file(dev,
 				&sda_in_alarm[i].dev_attr))
@@ -1340,7 +1362,17 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
 
 	val = (superio_inb(SIO_REG_DEVID) << 8)
 	    | superio_inb(SIO_REG_DEVID + 1);
-	if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) {
+	switch (val & SIO_ID_MASK) {
+	case SIO_W83627DHG_ID:
+		w83627ehf_num_in = 9;
+		break;
+	case SIO_W83627EHF_ID:
+	case SIO_W83627EHG_ID:
+		w83627ehf_num_in = 10;
+		break;
+	default:
+		printk(KERN_WARNING "w83627ehf: unsupported chip ID: 0x%04x\n",
+			val);
 		superio_exit();
 		return -ENODEV;
 	}
diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index dfdc29c77123..d7e240635b3b 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -286,9 +286,8 @@ static inline u8 DIV_TO_REG(long val)
 	return ((u8) i);
 }
 
-/* For each registered chip, we need to keep some data in memory. That
-   data is pointed to by w83627hf_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new client is allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct w83627hf_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index 1232171c3aad..a47da3ec5472 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -221,14 +221,8 @@ DIV_TO_REG(long val, enum chips type)
    a bit - except if there could be more than one SMBus. Groan. No solution
    for this yet. */
 
-/* This module may seem overly long and complicated. In fact, it is not so
-   bad. Quite a lot of bookkeeping is done. A real driver can often cut
-   some corners. */
-
-/* For each registered W83781D, we need to keep some data in memory. That
-   data is pointed to by w83781d_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new w83781d client is
-   allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct w83781d_data {
 	struct i2c_client client;
 	struct class_device *class_dev;