hwmon: (emc1403) Add support for EMC1404 and EMC1424
EMC1404 and EMC1424 are similar to EMC1403 and EMC1423, but support an additional external temperature sensor. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -21,7 +21,6 @@
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*
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* TODO
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* - cache alarm and critical limit registers
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* - add emc1404 support
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*/
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#include <linux/module.h>
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@ -41,6 +40,7 @@
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struct thermal_data {
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struct i2c_client *client;
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const struct attribute_group *groups[3];
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struct mutex mutex;
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/*
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* Cache the hyst value so we don't keep re-reading it. In theory
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@ -233,6 +233,22 @@ static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO,
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static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR,
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show_hyst, store_hyst, 0x1A);
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static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO | S_IWUSR,
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show_temp, store_temp, 0x2D);
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static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO | S_IWUSR,
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show_temp, store_temp, 0x2C);
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static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
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show_temp, store_temp, 0x30);
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static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 0x2A);
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static SENSOR_DEVICE_ATTR_2(temp4_min_alarm, S_IRUGO,
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show_bit, NULL, 0x36, 0x08);
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static SENSOR_DEVICE_ATTR_2(temp4_max_alarm, S_IRUGO,
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show_bit, NULL, 0x35, 0x08);
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static SENSOR_DEVICE_ATTR_2(temp4_crit_alarm, S_IRUGO,
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show_bit, NULL, 0x37, 0x08);
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static SENSOR_DEVICE_ATTR(temp4_crit_hyst, S_IRUGO | S_IWUSR,
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show_hyst, store_hyst, 0x30);
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static SENSOR_DEVICE_ATTR_2(power_state, S_IRUGO | S_IWUSR,
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show_bit, store_bit, 0x03, 0x40);
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@ -264,7 +280,26 @@ static struct attribute *emc1403_attrs[] = {
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&sensor_dev_attr_power_state.dev_attr.attr,
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NULL
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};
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ATTRIBUTE_GROUPS(emc1403);
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static const struct attribute_group emc1403_group = {
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.attrs = emc1403_attrs,
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};
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static struct attribute *emc1404_attrs[] = {
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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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&sensor_dev_attr_temp4_input.dev_attr.attr,
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&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
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&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
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&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
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&sensor_dev_attr_temp4_crit_hyst.dev_attr.attr,
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NULL
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};
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static const struct attribute_group emc1404_group = {
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.attrs = emc1404_attrs,
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};
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static int emc1403_detect(struct i2c_client *client,
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struct i2c_board_info *info)
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@ -284,10 +319,12 @@ static int emc1403_detect(struct i2c_client *client,
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case 0x23:
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strlcpy(info->type, "emc1423", I2C_NAME_SIZE);
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break;
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/*
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* Note: 0x25 is the 1404 which is very similar and this
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* driver could be extended
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*/
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case 0x25:
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strlcpy(info->type, "emc1404", I2C_NAME_SIZE);
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break;
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case 0x27:
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strlcpy(info->type, "emc1424", I2C_NAME_SIZE);
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break;
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default:
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return -ENODEV;
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}
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@ -314,13 +351,17 @@ static int emc1403_probe(struct i2c_client *client,
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mutex_init(&data->mutex);
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data->hyst_valid = jiffies - 1; /* Expired */
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data->groups[0] = &emc1403_group;
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if (id->driver_data)
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data->groups[1] = &emc1404_group;
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hwmon_dev = hwmon_device_register_with_groups(&client->dev,
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client->name, data,
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emc1403_groups);
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data->groups);
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if (IS_ERR(hwmon_dev))
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return PTR_ERR(hwmon_dev);
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dev_info(&client->dev, "EMC1403 Thermal chip found\n");
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dev_info(&client->dev, "%s Thermal chip found\n", id->name);
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return 0;
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}
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@ -330,7 +371,9 @@ static const unsigned short emc1403_address_list[] = {
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static const struct i2c_device_id emc1403_idtable[] = {
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{ "emc1403", 0 },
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{ "emc1404", 1 },
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{ "emc1423", 0 },
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{ "emc1424", 1 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, emc1403_idtable);
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