diff options
| author | Jiri Pirko <jiri@mellanox.com> | 2015-12-21 11:14:21 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-22 16:00:04 -0500 |
| commit | e7bc73cbb522c1704aafc428d5d9763c44666e38 (patch) | |
| tree | 53296c7da01f5fd1b5ee5904e060f0fab12680e2 | |
| parent | f2830d09895a64ba7a1a2c6ef41106c72e3654b2 (diff) | |
mlxsw: core: Allow to reset temperature history via hwmon interface
Add another sysfs hwmon attribute to expose possibility to reset
temperature sensors history.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c index b86db967eab9..00ccf1c0dcda 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c @@ -49,7 +49,7 @@ struct mlxsw_hwmon_attr { struct device_attribute dev_attr; struct mlxsw_hwmon *hwmon; unsigned int type_index; - char name[16]; + char name[32]; }; struct mlxsw_hwmon { @@ -107,6 +107,32 @@ static ssize_t mlxsw_hwmon_temp_max_show(struct device *dev, return sprintf(buf, "%u\n", temp_max); } +static ssize_t mlxsw_hwmon_temp_rst_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct mlxsw_hwmon_attr *mlwsw_hwmon_attr = + container_of(attr, struct mlxsw_hwmon_attr, dev_attr); + struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon; + char mtmp_pl[MLXSW_REG_MTMP_LEN]; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + if (val != 1) + return -EINVAL; + + mlxsw_reg_mtmp_pack(mtmp_pl, mlwsw_hwmon_attr->type_index, true, true); + err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl); + if (err) { + dev_err(mlxsw_hwmon->bus_info->dev, "Failed to reset temp sensor history\n"); + return err; + } + return err ? err : len; +} + static ssize_t mlxsw_hwmon_fan_rpm_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -175,6 +201,7 @@ static ssize_t mlxsw_hwmon_pwm_store(struct device *dev, enum mlxsw_hwmon_attr_type { MLXSW_HWMON_ATTR_TYPE_TEMP, MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, + MLXSW_HWMON_ATTR_TYPE_TEMP_RST, MLXSW_HWMON_ATTR_TYPE_FAN_RPM, MLXSW_HWMON_ATTR_TYPE_PWM, }; @@ -201,6 +228,12 @@ static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon, snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name), "temp%u_highest", num + 1); break; + case MLXSW_HWMON_ATTR_TYPE_TEMP_RST: + mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_temp_rst_store; + mlxsw_hwmon_attr->dev_attr.attr.mode = S_IWUSR; + snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name), + "temp%u_reset_history", num + 1); + break; case MLXSW_HWMON_ATTR_TYPE_FAN_RPM: mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_rpm_show; mlxsw_hwmon_attr->dev_attr.attr.mode = S_IRUGO; @@ -254,6 +287,8 @@ static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon *mlxsw_hwmon) MLXSW_HWMON_ATTR_TYPE_TEMP, i, i); mlxsw_hwmon_attr_add(mlxsw_hwmon, MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, i, i); + mlxsw_hwmon_attr_add(mlxsw_hwmon, + MLXSW_HWMON_ATTR_TYPE_TEMP_RST, i, i); } return 0; } |