--- /dev/null
+From 2778fb13ba0fed1b3e4a040e71f7881d399610a3 Mon Sep 17 00:00:00 2001
+From: Dirk Eibach <eibach@gdsys.de>
+Date: Wed, 9 Feb 2011 04:51:34 -0500
+Subject: hwmon: (lm63) Consider LM64 temperature offset
+
+From: Dirk Eibach <eibach@gdsys.de>
+
+commit 2778fb13ba0fed1b3e4a040e71f7881d399610a3 upstream.
+
+LM64 has 16 degrees Celsius temperature offset on all
+remote sensor registers.
+This was not considered When LM64 support was added to lm63.c.
+
+Signed-off-by: Dirk Eibach <eibach@gdsys.de>
+Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ drivers/hwmon/lm63.c | 59 ++++++++++++++++++++++++++++++++++++++++-----------
+ 1 file changed, 47 insertions(+), 12 deletions(-)
+
+--- a/drivers/hwmon/lm63.c
++++ b/drivers/hwmon/lm63.c
+@@ -98,6 +98,9 @@ static const unsigned short normal_i2c[]
+ * value, it uses signed 8-bit values with LSB = 1 degree Celsius.
+ * For remote temperature, low and high limits, it uses signed 11-bit values
+ * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
++ * For LM64 the actual remote diode temperature is 16 degree Celsius higher
++ * than the register reading. Remote temperature setpoints have to be
++ * adapted accordingly.
+ */
+
+ #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \
+@@ -165,6 +168,8 @@ struct lm63_data {
+ struct mutex update_lock;
+ char valid; /* zero until following fields are valid */
+ unsigned long last_updated; /* in jiffies */
++ int kind;
++ int temp2_offset;
+
+ /* registers values */
+ u8 config, config_fan;
+@@ -247,16 +252,34 @@ static ssize_t show_pwm1_enable(struct d
+ return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
+ }
+
+-static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
+- char *buf)
++/*
++ * There are 8bit registers for both local(temp1) and remote(temp2) sensor.
++ * For remote sensor registers temp2_offset has to be considered,
++ * for local sensor it must not.
++ * So we need separate 8bit accessors for local and remote sensor.
++ */
++static ssize_t show_local_temp8(struct device *dev,
++ struct device_attribute *devattr,
++ char *buf)
+ {
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
+ }
+
+-static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy,
+- const char *buf, size_t count)
++static ssize_t show_remote_temp8(struct device *dev,
++ struct device_attribute *devattr,
++ char *buf)
++{
++ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
++ struct lm63_data *data = lm63_update_device(dev);
++ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])
++ + data->temp2_offset);
++}
++
++static ssize_t set_local_temp8(struct device *dev,
++ struct device_attribute *dummy,
++ const char *buf, size_t count)
+ {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm63_data *data = i2c_get_clientdata(client);
+@@ -274,7 +297,8 @@ static ssize_t show_temp11(struct device
+ {
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+- return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index]));
++ return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index])
++ + data->temp2_offset);
+ }
+
+ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
+@@ -294,7 +318,7 @@ static ssize_t set_temp11(struct device
+ int nr = attr->index;
+
+ mutex_lock(&data->update_lock);
+- data->temp11[nr] = TEMP11_TO_REG(val);
++ data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
+ data->temp11[nr] >> 8);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
+@@ -310,6 +334,7 @@ static ssize_t show_temp2_crit_hyst(stru
+ {
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2])
++ + data->temp2_offset
+ - TEMP8_FROM_REG(data->temp2_crit_hyst));
+ }
+
+@@ -324,7 +349,7 @@ static ssize_t set_temp2_crit_hyst(struc
+ long hyst;
+
+ mutex_lock(&data->update_lock);
+- hyst = TEMP8_FROM_REG(data->temp8[2]) - val;
++ hyst = TEMP8_FROM_REG(data->temp8[2]) + data->temp2_offset - val;
+ i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
+ HYST_TO_REG(hyst));
+ mutex_unlock(&data->update_lock);
+@@ -355,16 +380,21 @@ static SENSOR_DEVICE_ATTR(fan1_min, S_IW
+ static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1);
+ static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);
+
+-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
+-static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
+- set_temp8, 1);
++static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0);
++static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8,
++ set_local_temp8, 1);
+
+ static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+ static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1);
+ static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2);
+-static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2);
++/*
++ * On LM63, temp2_crit can be set only once, which should be job
++ * of the bootloader.
++ */
++static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8,
++ NULL, 2);
+ static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
+ set_temp2_crit_hyst);
+
+@@ -479,7 +509,12 @@ static int lm63_probe(struct i2c_client
+ data->valid = 0;
+ mutex_init(&data->update_lock);
+
+- /* Initialize the LM63 chip */
++ /* Set the device type */
++ data->kind = id->driver_data;
++ if (data->kind == lm64)
++ data->temp2_offset = 16000;
++
++ /* Initialize chip */
+ lm63_init_client(new_client);
+
+ /* Register sysfs hooks */