Re: [PATCH v1 1/4] hwmon: pmbus-core: Add label for fan and temp

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On 12/12/24 13:49, Ninad Palsule wrote:
Adding label files for fan and temperature sensors in the power supply.
The openbmc application dbus-sensor(psusensor) requires those files to
consfigure those sensors.
Note that prefix for temp label is temp[A..C] used instead of temp[1..3]
as dbus-sensor(psusensor) application calculate index based on last
digit in the name so we do not want to make index double digit after
appending page index.

Signed-off-by: Ninad Palsule <ninad@xxxxxxxxxxxxx>

We are not going to fix userspace problems in the kernel.

Guenter

---
  drivers/hwmon/pmbus/pmbus_core.c | 14 ++++++++++++++
  1 file changed, 14 insertions(+)

diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index a7000314e5ad..149b3c5f3a4c 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2144,6 +2144,7 @@ static const struct pmbus_sensor_attr temp_attributes[] = {
  	{
  		.reg = PMBUS_READ_TEMPERATURE_1,
  		.class = PSC_TEMPERATURE,
+		.label = "tempA",
  		.paged = true,
  		.update = true,
  		.compare = true,
@@ -2156,6 +2157,7 @@ static const struct pmbus_sensor_attr temp_attributes[] = {
  	}, {
  		.reg = PMBUS_READ_TEMPERATURE_2,
  		.class = PSC_TEMPERATURE,
+		.label = "tempB",
  		.paged = true,
  		.update = true,
  		.compare = true,
@@ -2168,6 +2170,7 @@ static const struct pmbus_sensor_attr temp_attributes[] = {
  	}, {
  		.reg = PMBUS_READ_TEMPERATURE_3,
  		.class = PSC_TEMPERATURE,
+		.label = "tempC",
  		.paged = true,
  		.update = true,
  		.compare = true,
@@ -2282,6 +2285,17 @@ static int pmbus_add_fan_attributes(struct i2c_client *client,
  					     PSC_FAN, true, true, true) == NULL)
  				return -ENOMEM;
+ /*
+			 * Add fan label.
+			 * Assuming paged attributes while passing page index
+			 */
+			ret = pmbus_add_label(data, "fan", index, "fan",
+					      page + 1, 0xff);
+			if (ret) {
+				dev_err(data->dev, "Fan label add failed ret=%d\n", ret);
+				return ret;
+			}
+
  			/* Fan control */
  			if (pmbus_check_word_register(client, page,
  					pmbus_fan_command_registers[f])) {





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