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| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2012-01-16 22:51:45 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-01-16 22:51:45 +0100 |
| commit | 786375f7298dcc78a7cf44be9e15fb79bddc6f25 (patch) | |
| tree | 1fa888b117ab8e6a9012252599f231620c62aa95 /drivers/hwmon/lm63.c | |
| parent | 662bda28328b983f842f008a81a5fd4e6de6c5fe (diff) | |
| download | linux-786375f7298dcc78a7cf44be9e15fb79bddc6f25.tar.gz linux-786375f7298dcc78a7cf44be9e15fb79bddc6f25.tar.bz2 linux-786375f7298dcc78a7cf44be9e15fb79bddc6f25.zip | |
hwmon: (lm63) Add support for external temperature offset register
LM63 and compatibles support a temperature offset register for the external
temperature sensor. Add support for it.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/lm63.c')
| -rw-r--r-- | drivers/hwmon/lm63.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c index e02d7f01b01b..313aee18be1d 100644 --- a/drivers/hwmon/lm63.c +++ b/drivers/hwmon/lm63.c @@ -180,9 +180,10 @@ struct lm63_data { s8 temp8[3]; /* 0: local input 1: local high limit 2: remote critical limit */ - s16 temp11[3]; /* 0: remote input + s16 temp11[4]; /* 0: remote input 1: remote low limit - 2: remote high limit */ + 2: remote high limit + 3: remote offset */ u8 temp2_crit_hyst; u8 alarms; }; @@ -318,11 +319,13 @@ static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { - static const u8 reg[4] = { + static const u8 reg[6] = { LM63_REG_REMOTE_LOW_MSB, LM63_REG_REMOTE_LOW_LSB, LM63_REG_REMOTE_HIGH_MSB, LM63_REG_REMOTE_HIGH_LSB, + LM63_REG_REMOTE_OFFSET_MSB, + LM63_REG_REMOTE_OFFSET_LSB, }; struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); @@ -418,6 +421,8 @@ 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_offset, S_IWUSR | S_IRUGO, show_temp11, + set_temp11, 3); /* * On LM63, temp2_crit can be set only once, which should be job * of the bootloader. @@ -445,6 +450,7 @@ static struct attribute *lm63_attributes[] = { &sensor_dev_attr_temp2_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_offset.dev_attr.attr, &sensor_dev_attr_temp2_crit.dev_attr.attr, &dev_attr_temp2_crit_hyst.attr, @@ -668,6 +674,10 @@ static struct lm63_data *lm63_update_device(struct device *dev) LM63_REG_REMOTE_HIGH_MSB) << 8) | i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_HIGH_LSB); + data->temp11[3] = (i2c_smbus_read_byte_data(client, + LM63_REG_REMOTE_OFFSET_MSB) << 8) + | i2c_smbus_read_byte_data(client, + LM63_REG_REMOTE_OFFSET_LSB); data->temp8[2] = i2c_smbus_read_byte_data(client, LM63_REG_REMOTE_TCRIT); data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, |