hwmon: (thmc50) Add support for critical temperature limits
Add critical temperature limits to the driver. These limits are read only. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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1 changed files with 27 additions and 1 deletions
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@ -55,8 +55,11 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
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static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
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static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
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static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
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static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
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static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };
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#define THMC50_REG_CONF_nFANOFF 0x20
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#define THMC50_REG_CONF_PROGRAMMED 0x08
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/* Each client has this additional data */
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struct thmc50_data {
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@ -72,6 +75,7 @@ struct thmc50_data {
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s8 temp_input[3];
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s8 temp_max[3];
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s8 temp_min[3];
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s8 temp_critical[3];
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u8 analog_out;
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u8 alarms;
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};
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@ -199,6 +203,15 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
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return count;
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}
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static ssize_t show_temp_critical(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct thmc50_data *data = thmc50_update_device(dev);
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return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
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}
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static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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@ -214,7 +227,9 @@ static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
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static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
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show_temp_min, set_temp_min, offset - 1); \
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static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
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show_temp_max, set_temp_max, offset - 1);
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show_temp_max, set_temp_max, offset - 1); \
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static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO, \
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show_temp_critical, NULL, offset - 1);
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temp_reg(1);
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temp_reg(2);
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@ -234,10 +249,12 @@ static struct attribute *thmc50_attributes[] = {
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&sensor_dev_attr_temp1_max.dev_attr.attr,
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&sensor_dev_attr_temp1_min.dev_attr.attr,
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_crit.dev_attr.attr,
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&sensor_dev_attr_temp1_alarm.dev_attr.attr,
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&sensor_dev_attr_temp2_max.dev_attr.attr,
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&sensor_dev_attr_temp2_min.dev_attr.attr,
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&sensor_dev_attr_temp2_input.dev_attr.attr,
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&sensor_dev_attr_temp2_crit.dev_attr.attr,
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&sensor_dev_attr_temp2_alarm.dev_attr.attr,
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&sensor_dev_attr_temp2_fault.dev_attr.attr,
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&sensor_dev_attr_pwm1.dev_attr.attr,
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@ -254,6 +271,7 @@ static struct attribute *temp3_attributes[] = {
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&sensor_dev_attr_temp3_max.dev_attr.attr,
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&sensor_dev_attr_temp3_min.dev_attr.attr,
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&sensor_dev_attr_temp3_input.dev_attr.attr,
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&sensor_dev_attr_temp3_crit.dev_attr.attr,
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&sensor_dev_attr_temp3_alarm.dev_attr.attr,
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&sensor_dev_attr_temp3_fault.dev_attr.attr,
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NULL
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@ -429,6 +447,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
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int temps = data->has_temp3 ? 3 : 2;
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int i;
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int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
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prog &= THMC50_REG_CONF_PROGRAMMED;
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for (i = 0; i < temps; i++) {
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data->temp_input[i] = i2c_smbus_read_byte_data(client,
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THMC50_REG_TEMP[i]);
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@ -436,6 +458,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
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THMC50_REG_TEMP_MAX[i]);
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data->temp_min[i] = i2c_smbus_read_byte_data(client,
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THMC50_REG_TEMP_MIN[i]);
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data->temp_critical[i] =
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i2c_smbus_read_byte_data(client,
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prog ? THMC50_REG_TEMP_CRITICAL[i]
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: THMC50_REG_TEMP_DEFAULT[i]);
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}
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data->analog_out =
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i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
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