[PATCH v3 3/3] hwmon: emc2305: Use devm_thermal_of_cooling_device_register

florin.leotescu
2025-03-04T16:14:31Z

From: Florin Leotescu <florin.leotescu@nxp.com>

This prepares emc2305 driver to use configuration from Device Tree nodes.
Using devm_thermal_of_cooling_device_register also simplifies cleanup
procedure, so we are able to remove the emc2305_unset_tz and emc2305_remove
functions which are no longer used.

Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
---
drivers/hwmon/emc2305.c | 28 +++-------------------------
1 file changed, 3 insertions(+), 25 deletions(-)

diff --git a/drivers/hwmon/emc2305.c b/drivers/hwmon/emc2305.c
index a236f27c75bc..5f3f06308826 100644
--- a/drivers/hwmon/emc2305.c
+++ b/drivers/hwmon/emc2305.c
@@ -112,8 +112,6 @@ static char *emc2305_fan_name[] = {
"emc2305_fan5",
};

-static void emc2305_unset_tz(struct device *dev);
-
static int emc2305_get_max_channel(const struct emc2305_data *data)
{
return data->pwm_num;
@@ -293,8 +291,9 @@ static int emc2305_set_single_tz(struct device *dev, int idx)
pwm = data->pwm_min[cdev_idx];

data->cdev_data[cdev_idx].cdev =
- thermal_cooling_device_register(emc2305_fan_name[idx], data,
- &emc2305_cooling_ops);
+ devm_thermal_of_cooling_device_register(dev, dev->of_node,
+ emc2305_fan_name[idx], data,
+ &emc2305_cooling_ops);

if (IS_ERR(data->cdev_data[cdev_idx].cdev)) {
dev_err(dev, "Failed to register cooling device %s\n", emc2305_fan_name[idx]);
@@ -337,21 +336,9 @@ static int emc2305_set_tz(struct device *dev)
return 0;

thermal_cooling_device_register_fail:
- emc2305_unset_tz(dev);
return ret;
}

-static void emc2305_unset_tz(struct device *dev)
-{
- struct emc2305_data *data = dev_get_drvdata(dev);
- int i;
-
- /* Unregister cooling device. */
- for (i = 0; i < EMC2305_PWM_MAX; i++)
- if (data->cdev_data[i].cdev)
- thermal_cooling_device_unregister(data->cdev_data[i].cdev);
-}
-
static umode_t
emc2305_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel)
{
@@ -599,14 +586,6 @@ static int emc2305_probe(struct i2c_client *client)
return 0;
}

-static void emc2305_remove(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
-
- if (IS_REACHABLE(CONFIG_THERMAL))
- emc2305_unset_tz(dev);
-}
-
static const struct of_device_id of_emc2305_match_table[] = {
{ .compatible = "microchip,emc2301", },
{ .compatible = "microchip,emc2302", },
@@ -622,7 +601,6 @@ static struct i2c_driver emc2305_driver = {
.of_match_table = of_emc2305_match_table,
},
.probe = emc2305_probe,
- .remove = emc2305_remove,
.id_table = emc2305_ids,
};

--
2.34.1