Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
---
drivers/hwmon/lm90.c | 34 ++++++++++++++++++++++++++++++++--
1 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 11b5701..d2bcb47 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -147,6 +147,7 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646,
#define LM90_HAVE_OFFSET 0x02 /* temperature offset register */
#define LM90_HAVE_LOCAL_EXT 0x04 /* extended local temperature */
#define LM90_HAVE_REM_LIMIT_EXT 0x08 /* extended remote limit */
+#define LM90_HAVE_EMERGENCY 0x10 /* 3rd upper (emergency) limit */
/*
* Functions declaration
@@ -213,10 +214,12 @@ struct lm90_data {
u8 alert_alarms; /* Which alarm bits trigger ALERT# */
/* registers values */
- s8 temp8[4]; /* 0: local low limit
+ s8 temp8[6]; /* 0: local low limit
1: local high limit
2: local critical limit
- 3: remote critical limit */
+ 3: remote critical limit
+ 4: local emergency limit
+ 5: remote emergency limit */
s16 temp11[5]; /* 0: remote input
1: remote low limit
2: remote high limit
@@ -608,6 +611,24 @@ static const struct attribute_group lm90_group = {
.attrs = lm90_attributes,
};
+/*
+ * Additional attributes for devices with emergency sensors
+ */
+static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 4);
+static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 5);
+
+static struct attribute *lm90_emergency_attributes[] = {
+ &sensor_dev_attr_temp1_emergency.dev_attr.attr,
+ &sensor_dev_attr_temp2_emergency.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm90_emergency_group = {
+ .attrs = lm90_emergency_attributes,
+};
+
/* pec used for ADM1032 only */
static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
char *buf)
@@ -818,6 +839,9 @@ static int lm90_detect(struct i2c_client *new_client,
static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data)
{
+ if (data->flags & LM90_HAVE_EMERGENCY)
+ sysfs_remove_group(&client->dev.kobj,
+ &lm90_emergency_group);
if (data->flags & LM90_HAVE_OFFSET)
device_remove_file(&client->dev,
&sensor_dev_attr_temp2_offset.dev_attr);
@@ -889,6 +913,12 @@ static int lm90_probe(struct i2c_client *new_client,
if (err)
goto exit_remove_files;
}
+ if (data->flags & LM90_HAVE_EMERGENCY) {
+ err = sysfs_create_group(&new_client->dev.kobj,
+ &lm90_emergency_group);
+ if (err)
+ goto exit_remove_files;
+ }
data->hwmon_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->hwmon_dev)) {
--
1.7.0.87.g0901d
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