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mlxsw: core: Add QSFP module temperature label attribute to hwmon

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Add label attribute to hwmon object for exposing QSFP module's
temperature sensor name. Modules are labeled as "front panel xxx". The
label is used by utilities such as "sensors":

front panel 001:   +0.0C  (crit =  +0.0C, emerg =  +0.0C)
..
front panel 020:  +31.0C  (crit = +70.0C, emerg = +80.0C)
..
front panel 056:  +41.0C  (crit = +70.0C, emerg = +80.0C)

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vadim Pasternak 2019-02-13 11:28:55 +00:00 committed by David S. Miller
parent 5c42eaa07b
commit a53779de6a
1 changed files with 23 additions and 0 deletions
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23
drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c
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@ -321,6 +321,18 @@ mlxsw_hwmon_module_temp_emergency_show(struct device *dev,
return sprintf(buf, "%u\n", temp);
}
static ssize_t
mlxsw_hwmon_module_temp_label_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
return sprintf(buf, "front panel %03u\n",
mlwsw_hwmon_attr->type_index);
}
enum mlxsw_hwmon_attr_type {
MLXSW_HWMON_ATTR_TYPE_TEMP,
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX,
@ -332,6 +344,7 @@ enum mlxsw_hwmon_attr_type {
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
};
static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon,
@ -408,6 +421,13 @@ static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon,
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_emergency", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_label_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_label", num + 1);
break;
default:
WARN_ON(1);
}
@ -528,6 +548,9 @@ static int mlxsw_hwmon_module_init(struct mlxsw_hwmon *mlxsw_hwmon)
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
index, index);
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
index, index);
index++;
}