Use devm_hwmon_device_register_with_info() instead of
devm_hwmon_device_register_with_groups() to register the hwmon
device to simplify the code and make it easier to maintain.
As part of this change, thermal device registration is moved into
the hwmon core.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/ntc_thermistor.c | 106 +++++++++++++++++++++++++----------------
1 file changed, 66 insertions(+), 40 deletions(-)
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index 2823aff82c82..e4f9f7ce92fa 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -37,8 +37,6 @@
#include <linux/iio/consumer.h>
#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/thermal.h>
struct ntc_compensation {
int temp_c;
@@ -588,55 +586,87 @@ static int ntc_thermistor_get_ohm(struct ntc_data *data)
return -EINVAL;
}
-static int ntc_read_temp(void *data, int *temp)
+static int ntc_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
{
+ struct ntc_data *data = dev_get_drvdata(dev);
int ohm;
- ohm = ntc_thermistor_get_ohm(data);
- if (ohm < 0)
- return ohm;
-
- *temp = get_temp_mc(data, ohm);
-
- return 0;
+ switch (type) {
+ case hwmon_temp:
+ switch (attr) {
+ case hwmon_temp_input:
+ ohm = ntc_thermistor_get_ohm(data);
+ if (ohm < 0)
+ return ohm;
+ *val = get_temp_mc(data, ohm);
+ return 0;
+ case hwmon_temp_type:
+ *val = 4;
+ return 0;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ return -EINVAL;
}
-static ssize_t ntc_type_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static umode_t ntc_is_visible(const void *data, enum hwmon_sensor_types type,
+ u32 attr, int channel)
{
- return sprintf(buf, "4\n");
+ if (type == hwmon_temp) {
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_type:
+ return 0444;
+ default:
+ break;
+ }
+ }
+ return 0;
}
-static ssize_t ntc_temp_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct ntc_data *data = dev_get_drvdata(dev);
- int ohm;
+static const u32 ntc_chip_config[] = {
+ HWMON_C_REGISTER_TZ,
+ 0
+};
- ohm = ntc_thermistor_get_ohm(data);
- if (ohm < 0)
- return ohm;
+static const struct hwmon_channel_info ntc_chip = {
+ .type = hwmon_chip,
+ .config = ntc_chip_config,
+};
- return sprintf(buf, "%d\n", get_temp_mc(data, ohm));
-}
+static const u32 ntc_temp_config[] = {
+ HWMON_T_INPUT, HWMON_T_TYPE,
+ 0
+};
-static SENSOR_DEVICE_ATTR_RO(temp1_type, ntc_type, 0);
-static SENSOR_DEVICE_ATTR_RO(temp1_input, ntc_temp, 0);
+static const struct hwmon_channel_info ntc_temp = {
+ .type = hwmon_temp,
+ .config = ntc_temp_config,
+};
-static struct attribute *ntc_attrs[] = {
- &sensor_dev_attr_temp1_type.dev_attr.attr,
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- NULL,
+static const struct hwmon_channel_info *ntc_info[] = {
+ &ntc_chip,
+ &ntc_temp,
+ NULL
};
-ATTRIBUTE_GROUPS(ntc);
-static const struct thermal_zone_of_device_ops ntc_of_thermal_ops = {
- .get_temp = ntc_read_temp,
+static const struct hwmon_ops ntc_hwmon_ops = {
+ .is_visible = ntc_is_visible,
+ .read = ntc_read,
+};
+
+static const struct hwmon_chip_info ntc_chip_info = {
+ .ops = &ntc_hwmon_ops,
+ .info = ntc_info,
};
static int ntc_thermistor_probe(struct platform_device *pdev)
{
- struct thermal_zone_device *tz;
struct device *dev = &pdev->dev;
const struct of_device_id *of_id =
of_match_device(of_match_ptr(ntc_match), dev);
@@ -697,8 +727,9 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
data->comp = ntc_type[pdev_id->driver_data].comp;
data->n_comp = ntc_type[pdev_id->driver_data].n_comp;
- hwmon_dev = devm_hwmon_device_register_with_groups(dev, pdev_id->name,
- data, ntc_groups);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, pdev_id->name,
+ data, &ntc_chip_info,
+ NULL);
if (IS_ERR(hwmon_dev)) {
dev_err(dev, "unable to register as hwmon device.\n");
return PTR_ERR(hwmon_dev);
@@ -707,11 +738,6 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
dev_info(dev, "Thermistor type: %s successfully probed.\n",
pdev_id->name);
- tz = devm_thermal_zone_of_sensor_register(dev, 0, data,
- &ntc_of_thermal_ops);
- if (IS_ERR(tz))
- dev_dbg(dev, "Failed to register to thermal fw.\n");
-
return 0;
}
--
2.7.4
