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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>
This commit is contained in:
Krzysztof Helt 2008-08-06 22:41:05 +02:00 committed by Jean Delvare
parent 68f823de3f
commit 84f768c163
1 changed files with 27 additions and 1 deletions
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28
drivers/hwmon/thmc50.c
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@ -55,8 +55,11 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };
#define THMC50_REG_CONF_nFANOFF 0x20
#define THMC50_REG_CONF_PROGRAMMED 0x08
/* Each client has this additional data */
struct thmc50_data {
@ -72,6 +75,7 @@ struct thmc50_data {
s8 temp_input[3];
s8 temp_max[3];
s8 temp_min[3];
s8 temp_critical[3];
u8 analog_out;
u8 alarms;
};
@ -199,6 +203,15 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
return count;
}
static ssize_t show_temp_critical(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct thmc50_data *data = thmc50_update_device(dev);
return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
}
static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
char *buf)
{
@ -214,7 +227,9 @@ static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
show_temp_min, set_temp_min, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
show_temp_max, set_temp_max, offset - 1);
show_temp_max, set_temp_max, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO, \
show_temp_critical, NULL, offset - 1);
temp_reg(1);
temp_reg(2);
@ -234,10 +249,12 @@ static struct attribute *thmc50_attributes[] = {
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_crit.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
@ -254,6 +271,7 @@ static struct attribute *temp3_attributes[] = {
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp3_crit.dev_attr.attr,
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
NULL
@ -429,6 +447,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
int temps = data->has_temp3 ? 3 : 2;
int i;
int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
prog &= THMC50_REG_CONF_PROGRAMMED;
for (i = 0; i < temps; i++) {
data->temp_input[i] = i2c_smbus_read_byte_data(client,
THMC50_REG_TEMP[i]);
@ -436,6 +458,10 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
THMC50_REG_TEMP_MAX[i]);
data->temp_min[i] = i2c_smbus_read_byte_data(client,
THMC50_REG_TEMP_MIN[i]);
data->temp_critical[i] =
i2c_smbus_read_byte_data(client,
prog ? THMC50_REG_TEMP_CRITICAL[i]
: THMC50_REG_TEMP_DEFAULT[i]);
}
data->analog_out =
i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);