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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/sfp.h>
#include "core.h"
#include "core_env.h"
#define MLXSW_HWMON_TEMP_SENSOR_MAX_COUNT 127
#define MLXSW_HWMON_ATTR_COUNT (MLXSW_HWMON_TEMP_SENSOR_MAX_COUNT * 4 + \
MLXSW_MFCR_TACHOS_MAX + MLXSW_MFCR_PWMS_MAX)
struct mlxsw_hwmon_attr {
struct device_attribute dev_attr;
struct mlxsw_hwmon *hwmon;
unsigned int type_index;
char name[32];
};
struct mlxsw_hwmon {
struct mlxsw_core *core;
const struct mlxsw_bus_info *bus_info;
struct device *hwmon_dev;
struct attribute_group group;
const struct attribute_group *groups[2];
struct attribute *attrs[MLXSW_HWMON_ATTR_COUNT + 1];
struct mlxsw_hwmon_attr hwmon_attrs[MLXSW_HWMON_ATTR_COUNT];
unsigned int attrs_count;
u8 sensor_count;
};
static ssize_t mlxsw_hwmon_temp_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
unsigned int temp;
int err;
mlxsw_reg_mtmp_pack(mtmp_pl, mlwsw_hwmon_attr->type_index,
false, false);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
return err;
}
mlxsw_reg_mtmp_unpack(mtmp_pl, &temp, NULL, NULL);
return sprintf(buf, "%u\n", temp);
}
static ssize_t mlxsw_hwmon_temp_max_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
unsigned int temp_max;
int err;
mlxsw_reg_mtmp_pack(mtmp_pl, mlwsw_hwmon_attr->type_index,
false, false);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
return err;
}
mlxsw_reg_mtmp_unpack(mtmp_pl, NULL, &temp_max, NULL);
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 len;
}
static ssize_t mlxsw_hwmon_fan_rpm_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mfsm_pl[MLXSW_REG_MFSM_LEN];
int err;
mlxsw_reg_mfsm_pack(mfsm_pl, mlwsw_hwmon_attr->type_index);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsm), mfsm_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
return err;
}
return sprintf(buf, "%u\n", mlxsw_reg_mfsm_rpm_get(mfsm_pl));
}
static ssize_t mlxsw_hwmon_fan_fault_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char fore_pl[MLXSW_REG_FORE_LEN];
bool fault;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(fore), fore_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
return err;
}
mlxsw_reg_fore_unpack(fore_pl, mlwsw_hwmon_attr->type_index, &fault);
return sprintf(buf, "%u\n", fault);
}
static ssize_t mlxsw_hwmon_pwm_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mfsc_pl[MLXSW_REG_MFSC_LEN];
int err;
mlxsw_reg_mfsc_pack(mfsc_pl, mlwsw_hwmon_attr->type_index, 0);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query PWM\n");
return err;
}
return sprintf(buf, "%u\n",
mlxsw_reg_mfsc_pwm_duty_cycle_get(mfsc_pl));
}
static ssize_t mlxsw_hwmon_pwm_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 mfsc_pl[MLXSW_REG_MFSC_LEN];
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val > 255)
return -EINVAL;
mlxsw_reg_mfsc_pack(mfsc_pl, mlwsw_hwmon_attr->type_index, val);
err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to write PWM\n");
return err;
}
return len;
}
static ssize_t mlxsw_hwmon_module_temp_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mtbr_pl[MLXSW_REG_MTBR_LEN] = {0};
u16 temp;
u8 module;
int err;
module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
mlxsw_reg_mtbr_pack(mtbr_pl, MLXSW_REG_MTBR_BASE_MODULE_INDEX + module,
1);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl);
if (err) {
dev_err(dev, "Failed to query module temperature sensor\n");
return err;
}
mlxsw_reg_mtbr_temp_unpack(mtbr_pl, 0, &temp, NULL);
/* Update status and temperature cache. */
switch (temp) {
case MLXSW_REG_MTBR_NO_CONN: /* fall-through */
case MLXSW_REG_MTBR_NO_TEMP_SENS: /* fall-through */
case MLXSW_REG_MTBR_INDEX_NA:
temp = 0;
break;
case MLXSW_REG_MTBR_BAD_SENS_INFO:
/* Untrusted cable is connected. Reading temperature from its
* sensor is faulty.
*/
temp = 0;
break;
default:
temp = MLXSW_REG_MTMP_TEMP_TO_MC(temp);
break;
}
return sprintf(buf, "%u\n", temp);
}
static ssize_t mlxsw_hwmon_module_temp_fault_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
char mtbr_pl[MLXSW_REG_MTBR_LEN] = {0};
u8 module, fault;
u16 temp;
int err;
module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
mlxsw_reg_mtbr_pack(mtbr_pl, MLXSW_REG_MTBR_BASE_MODULE_INDEX + module,
1);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl);
if (err) {
dev_err(dev, "Failed to query module temperature sensor\n");
return err;
}
mlxsw_reg_mtbr_temp_unpack(mtbr_pl, 0, &temp, NULL);
/* Update status and temperature cache. */
switch (temp) {
case MLXSW_REG_MTBR_BAD_SENS_INFO:
/* Untrusted cable is connected. Reading temperature from its
* sensor is faulty.
*/
fault = 1;
break;
case MLXSW_REG_MTBR_NO_CONN: /* fall-through */
case MLXSW_REG_MTBR_NO_TEMP_SENS: /* fall-through */
case MLXSW_REG_MTBR_INDEX_NA:
default:
fault = 0;
break;
}
return sprintf(buf, "%u\n", fault);
}
static ssize_t
mlxsw_hwmon_module_temp_critical_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
int temp;
u8 module;
int err;
module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core, module,
SFP_TEMP_HIGH_WARN, &temp);
if (err) {
dev_err(dev, "Failed to query module temperature thresholds\n");
return err;
}
return sprintf(buf, "%u\n", temp);
}
static ssize_t
mlxsw_hwmon_module_temp_emergency_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);
struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
u8 module;
int temp;
int err;
module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core, module,
SFP_TEMP_HIGH_ALARM, &temp);
if (err) {
dev_err(dev, "Failed to query module temperature thresholds\n");
return err;
}
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,
MLXSW_HWMON_ATTR_TYPE_TEMP_RST,
MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
MLXSW_HWMON_ATTR_TYPE_FAN_FAULT,
MLXSW_HWMON_ATTR_TYPE_PWM,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE,
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,
enum mlxsw_hwmon_attr_type attr_type,
unsigned int type_index, unsigned int num) {
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr;
unsigned int attr_index;
attr_index = mlxsw_hwmon->attrs_count;
mlxsw_hwmon_attr = &mlxsw_hwmon->hwmon_attrs[attr_index];
switch (attr_type) {
case MLXSW_HWMON_ATTR_TYPE_TEMP:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MAX:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_max_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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 = 0200;
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 = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"fan%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_FAN_FAULT:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_fault_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"fan%u_fault", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_PWM:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_pwm_show;
mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_pwm_store;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0644;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"pwm%u", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_module_temp_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_fault_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_fault", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_critical_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_crit", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_emergency_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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);
}
mlxsw_hwmon_attr->type_index = type_index;
mlxsw_hwmon_attr->hwmon = mlxsw_hwmon;
mlxsw_hwmon_attr->dev_attr.attr.name = mlxsw_hwmon_attr->name;
sysfs_attr_init(&mlxsw_hwmon_attr->dev_attr.attr);
mlxsw_hwmon->attrs[attr_index] = &mlxsw_hwmon_attr->dev_attr.attr;
mlxsw_hwmon->attrs_count++;
}
static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon *mlxsw_hwmon)
{
char mtcap_pl[MLXSW_REG_MTCAP_LEN] = {0};
char mtmp_pl[MLXSW_REG_MTMP_LEN];
int i;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtcap), mtcap_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to get number of temp sensors\n");
return err;
}
mlxsw_hwmon->sensor_count = mlxsw_reg_mtcap_sensor_count_get(mtcap_pl);
for (i = 0; i < mlxsw_hwmon->sensor_count; i++) {
mlxsw_reg_mtmp_pack(mtmp_pl, i, 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 setup temp sensor number %d\n",
i);
return err;
}
mlxsw_hwmon_attr_add(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;
}
static int mlxsw_hwmon_fans_init(struct mlxsw_hwmon *mlxsw_hwmon)
{
char mfcr_pl[MLXSW_REG_MFCR_LEN] = {0};
enum mlxsw_reg_mfcr_pwm_frequency freq;
unsigned int type_index;
unsigned int num;
u16 tacho_active;
u8 pwm_active;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfcr), mfcr_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to get to probe PWMs and Tachometers\n");
return err;
}
mlxsw_reg_mfcr_unpack(mfcr_pl, &freq, &tacho_active, &pwm_active);
num = 0;
for (type_index = 0; type_index < MLXSW_MFCR_TACHOS_MAX; type_index++) {
if (tacho_active & BIT(type_index)) {
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
type_index, num);
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_FAN_FAULT,
type_index, num++);
}
}
num = 0;
for (type_index = 0; type_index < MLXSW_MFCR_PWMS_MAX; type_index++) {
if (pwm_active & BIT(type_index))
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_PWM,
type_index, num++);
}
return 0;
}
static int mlxsw_hwmon_module_init(struct mlxsw_hwmon *mlxsw_hwmon)
{
unsigned int module_count = mlxsw_core_max_ports(mlxsw_hwmon->core);
char pmlp_pl[MLXSW_REG_PMLP_LEN] = {0};
int i, index;
u8 width;
int err;
/* Add extra attributes for module temperature. Sensor index is
* assigned to sensor_count value, while all indexed before
* sensor_count are already utilized by the sensors connected through
* mtmp register by mlxsw_hwmon_temp_init().
*/
index = mlxsw_hwmon->sensor_count;
for (i = 1; i < module_count; i++) {
mlxsw_reg_pmlp_pack(pmlp_pl, i);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(pmlp),
pmlp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to read module index %d\n",
i);
return err;
}
width = mlxsw_reg_pmlp_width_get(pmlp_pl);
if (!width)
continue;
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE, index,
index);
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
index, index);
mlxsw_hwmon_attr_add(mlxsw_hwmon,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT,
index, index);
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++;
}
return 0;
}
int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
const struct mlxsw_bus_info *mlxsw_bus_info,
struct mlxsw_hwmon **p_hwmon)
{
struct mlxsw_hwmon *mlxsw_hwmon;
struct device *hwmon_dev;
int err;
mlxsw_hwmon = kzalloc(sizeof(*mlxsw_hwmon), GFP_KERNEL);
if (!mlxsw_hwmon)
return -ENOMEM;
mlxsw_hwmon->core = mlxsw_core;
mlxsw_hwmon->bus_info = mlxsw_bus_info;
err = mlxsw_hwmon_temp_init(mlxsw_hwmon);
if (err)
goto err_temp_init;
err = mlxsw_hwmon_fans_init(mlxsw_hwmon);
if (err)
goto err_fans_init;
err = mlxsw_hwmon_module_init(mlxsw_hwmon);
if (err)
goto err_temp_module_init;
mlxsw_hwmon->groups[0] = &mlxsw_hwmon->group;
mlxsw_hwmon->group.attrs = mlxsw_hwmon->attrs;
hwmon_dev = hwmon_device_register_with_groups(mlxsw_bus_info->dev,
"mlxsw", mlxsw_hwmon,
mlxsw_hwmon->groups);
if (IS_ERR(hwmon_dev)) {
err = PTR_ERR(hwmon_dev);
goto err_hwmon_register;
}
mlxsw_hwmon->hwmon_dev = hwmon_dev;
*p_hwmon = mlxsw_hwmon;
return 0;
err_hwmon_register:
err_temp_module_init:
err_fans_init:
err_temp_init:
kfree(mlxsw_hwmon);
return err;
}
void mlxsw_hwmon_fini(struct mlxsw_hwmon *mlxsw_hwmon)
{
hwmon_device_unregister(mlxsw_hwmon->hwmon_dev);
kfree(mlxsw_hwmon);
}
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