From: Slawomir Stepien <slawomir.stepien@xxxxxxxxx>
Try to read the channel's temperature offset from device-tree. Having
offset in device-tree node is not mandatory. The offset can only be set
for remote channels.
Signed-off-by: Slawomir Stepien <slawomir.stepien@xxxxxxxxx>
---
Changes since v1:
* Use the new function lm90_set_temp_offset.
* Update the messages in dev_err() calls.
drivers/hwmon/lm90.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index ec885cb3ab92..9d878163a1f2 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -2666,6 +2666,7 @@ static int lm90_probe_channel_from_dt(struct i2c_client *client,
struct lm90_data *data)
{
u32 id;
+ s32 val;
int err;
struct device *dev = &client->dev;
@@ -2689,6 +2690,21 @@ static int lm90_probe_channel_from_dt(struct i2c_client *client,
if (data->channel_label[id])
data->channel_config[id] |= HWMON_T_LABEL;
+ err = of_property_read_s32(child, "temperature-offset-millicelsius", &val);
+ if (!err) {
+ if (id == 0) {
+ dev_err(dev, "temperature-offset-millicelsius can't be set for internal channel\n");
+ return -EINVAL;
+ }
+
+ err = lm90_set_temp_offset(data, lm90_temp_offset_index[id], id, val);
+ if (err) {
+ dev_err(dev, "can't set temperature offset %d for channel %d (%d)\n",
+ val, id, err);
+ return err;
+ }
+ }
+
return 0;
}
--
2.36.1
