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hwmon: (emc1403) Add support for alarm and diode fault status on EMC14x2

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Alarm and fault status register on EMC1402, EMC1412, and EMC1422 is reported
in a different register than with other chips. Add support for it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2014-05-12 11:03:47 -07:00
parent d8850c19b5
commit 03f49f641a
1 changed files with 36 additions and 0 deletions
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36
drivers/hwmon/emc1403.c
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@ -299,6 +299,39 @@ static const struct attribute_group emc1404_group = {
.attrs = emc1404_attrs,
};
/*
* EMC14x2 uses a different register and different bits to report alarm and
* fault status. For simplicity, provide a separate attribute group for this
* chip series.
* Since we can not re-use the same attribute names, create a separate attribute
* array.
*/
static struct sensor_device_attribute_2 emc1402_alarms[] = {
SENSOR_ATTR_2(temp1_min_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x20),
SENSOR_ATTR_2(temp1_max_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x40),
SENSOR_ATTR_2(temp1_crit_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x01),
SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_bit, NULL, 0x02, 0x04),
SENSOR_ATTR_2(temp2_min_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x08),
SENSOR_ATTR_2(temp2_max_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x10),
SENSOR_ATTR_2(temp2_crit_alarm, S_IRUGO, show_bit, NULL, 0x02, 0x02),
};
static struct attribute *emc1402_alarm_attrs[] = {
&emc1402_alarms[0].dev_attr.attr,
&emc1402_alarms[1].dev_attr.attr,
&emc1402_alarms[2].dev_attr.attr,
&emc1402_alarms[3].dev_attr.attr,
&emc1402_alarms[4].dev_attr.attr,
&emc1402_alarms[5].dev_attr.attr,
&emc1402_alarms[6].dev_attr.attr,
NULL,
};
static const struct attribute_group emc1402_alarm_group = {
.attrs = emc1402_alarm_attrs,
};
static int emc1403_detect(struct i2c_client *client,
struct i2c_board_info *info)
{
@ -395,6 +428,9 @@ static int emc1403_probe(struct i2c_client *client,
data->groups[0] = &emc1402_group;
}
if (id->driver_data == emc1402)
data->groups[1] = &emc1402_alarm_group;
hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
client->name, data,
data->groups);