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hwmon: (nct7802) add temperature sensor type attribute
Sensor type: 3 diode (current mode), MD=1 4 thermistor, MD=2 Reference: Nuvoton Hardware Monitoring IC NCT7802Y 7.2.32 Mode Selection Register Location : Index 22h Signed-off-by: Constantine Shulyupin <const@MakeLinux.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Constantine Shulyupin
Guenter Roeck
parent
f7644cbfcd
commit
fcdc5739dc
@ -49,7 +49,7 @@ static const u8 REG_VOLTAGE_LIMIT_MSB_SHIFT[2][5] = {
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#define REG_VOLTAGE_LOW 0x0f
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#define REG_FANCOUNT_LOW 0x13
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#define REG_START 0x21
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#define REG_MODE 0x22
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#define REG_MODE 0x22 /* 7.2.32 Mode Selection Register */
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#define REG_PECI_ENABLE 0x23
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#define REG_FAN_ENABLE 0x24
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#define REG_VMON_ENABLE 0x25
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@ -66,6 +66,43 @@ struct nct7802_data {
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struct mutex access_lock; /* for multi-byte read and write operations */
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};
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static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct nct7802_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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unsigned int mode;
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int ret;
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ret = regmap_read(data->regmap, REG_MODE, &mode);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%u\n", (mode >> (2 * sattr->index) & 3) + 2);
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}
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static ssize_t store_temp_type(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct nct7802_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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unsigned int type;
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int err;
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err = kstrtouint(buf, 0, &type);
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if (err < 0)
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return err;
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if (sattr->index == 2 && type != 4) /* RD3 */
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return -EINVAL;
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if (type < 3 || type > 4)
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return -EINVAL;
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err = regmap_update_bits(data->regmap, REG_MODE,
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3 << 2 * sattr->index, (type - 2) << 2 * sattr->index);
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return err ? : count;
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}
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static int nct7802_read_temp(struct nct7802_data *data,
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u8 reg_temp, u8 reg_temp_low, int *temp)
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{
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@ -377,6 +414,8 @@ store_beep(struct device *dev, struct device_attribute *attr, const char *buf,
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return err ? : count;
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}
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static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0x01,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp,
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@ -386,6 +425,8 @@ static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp,
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static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3a, 0);
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static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 1);
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static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0x02,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp,
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@ -395,6 +436,8 @@ static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp,
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static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3b, 0);
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static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0x03,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp,
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@ -475,6 +518,7 @@ static SENSOR_DEVICE_ATTR_2(temp6_beep, S_IRUGO | S_IWUSR, show_beep,
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store_beep, 0x5c, 5);
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static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp1_type.dev_attr.attr,
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_min.dev_attr.attr,
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&sensor_dev_attr_temp1_max.dev_attr.attr,
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@ -485,7 +529,8 @@ static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp1_fault.dev_attr.attr,
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&sensor_dev_attr_temp1_beep.dev_attr.attr,
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&sensor_dev_attr_temp2_input.dev_attr.attr, /* 9 */
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&sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */
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&sensor_dev_attr_temp2_input.dev_attr.attr,
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&sensor_dev_attr_temp2_min.dev_attr.attr,
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&sensor_dev_attr_temp2_max.dev_attr.attr,
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&sensor_dev_attr_temp2_crit.dev_attr.attr,
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@ -495,7 +540,8 @@ static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp2_fault.dev_attr.attr,
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&sensor_dev_attr_temp2_beep.dev_attr.attr,
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&sensor_dev_attr_temp3_input.dev_attr.attr, /* 18 */
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&sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */
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&sensor_dev_attr_temp3_input.dev_attr.attr,
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&sensor_dev_attr_temp3_min.dev_attr.attr,
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&sensor_dev_attr_temp3_max.dev_attr.attr,
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&sensor_dev_attr_temp3_crit.dev_attr.attr,
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@ -505,7 +551,7 @@ static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp3_fault.dev_attr.attr,
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&sensor_dev_attr_temp3_beep.dev_attr.attr,
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&sensor_dev_attr_temp4_input.dev_attr.attr, /* 27 */
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&sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */
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&sensor_dev_attr_temp4_min.dev_attr.attr,
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&sensor_dev_attr_temp4_max.dev_attr.attr,
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&sensor_dev_attr_temp4_crit.dev_attr.attr,
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@ -514,7 +560,7 @@ static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
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&sensor_dev_attr_temp4_beep.dev_attr.attr,
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&sensor_dev_attr_temp5_input.dev_attr.attr, /* 35 */
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&sensor_dev_attr_temp5_input.dev_attr.attr, /* 38 */
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&sensor_dev_attr_temp5_min.dev_attr.attr,
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&sensor_dev_attr_temp5_max.dev_attr.attr,
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&sensor_dev_attr_temp5_crit.dev_attr.attr,
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@ -523,7 +569,7 @@ static struct attribute *nct7802_temp_attrs[] = {
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&sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
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&sensor_dev_attr_temp5_beep.dev_attr.attr,
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&sensor_dev_attr_temp6_input.dev_attr.attr, /* 43 */
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&sensor_dev_attr_temp6_input.dev_attr.attr, /* 46 */
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&sensor_dev_attr_temp6_beep.dev_attr.attr,
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NULL
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@ -541,25 +587,27 @@ static umode_t nct7802_temp_is_visible(struct kobject *kobj,
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if (err < 0)
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return 0;
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if (index < 9 &&
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if (index < 10 &&
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(reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */
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return 0;
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if (index >= 9 && index < 18 &&
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if (index >= 10 && index < 20 &&
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(reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */
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return 0;
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if (index >= 18 && index < 27 && (reg & 0x30) != 0x20) /* RD3 */
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if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */
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return 0;
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if (index >= 27 && index < 35) /* local */
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if (index >= 30 && index < 38) /* local */
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return attr->mode;
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err = regmap_read(data->regmap, REG_PECI_ENABLE, ®);
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if (err < 0)
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return 0;
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if (index >= 35 && index < 43 && !(reg & 0x01)) /* PECI 0 */
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if (index >= 38 && index < 46 && !(reg & 0x01)) /* PECI 0 */
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return 0;
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if (index >= 0x43 && (!(reg & 0x02))) /* PECI 1 */
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if (index >= 0x46 && (!(reg & 0x02))) /* PECI 1 */
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return 0;
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return attr->mode;
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