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// SPDX-License-Identifier: GPL-2.0-only
/* Atlantic Network Driver
*
* Copyright (C) 2014-2019 aQuantia Corporation
* Copyright (C) 2019-2020 Marvell International Ltd.
*/
/* File aq_drvinfo.c: Definition of common code for firmware info in sys.*/
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/module.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/hwmon.h>
#include <linux/uaccess.h>
#include "aq_drvinfo.h"
#include "aq_nic.h"
#if IS_REACHABLE(CONFIG_HWMON)
static const char * const atl_temp_label[] = {
"PHY Temperature",
"MAC Temperature",
};
static int aq_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long *value)
{
struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
int err = 0;
int temp;
if (!aq_nic)
return -EIO;
if (type != hwmon_temp || attr != hwmon_temp_input)
return -EOPNOTSUPP;
switch (channel) {
case 0:
if (!aq_nic->aq_fw_ops->get_phy_temp)
return -EOPNOTSUPP;
err = aq_nic->aq_fw_ops->get_phy_temp(aq_nic->aq_hw, &temp);
*value = temp;
break;
case 1:
if (!aq_nic->aq_fw_ops->get_mac_temp &&
!aq_nic->aq_hw_ops->hw_get_mac_temp)
return -EOPNOTSUPP;
if (aq_nic->aq_fw_ops->get_mac_temp)
err = aq_nic->aq_fw_ops->get_mac_temp(aq_nic->aq_hw, &temp);
else
err = aq_nic->aq_hw_ops->hw_get_mac_temp(aq_nic->aq_hw, &temp);
*value = temp;
break;
default:
return -EOPNOTSUPP;
}
return err;
}
static int aq_hwmon_read_string(struct device *dev,
enum hwmon_sensor_types type,
u32 attr, int channel, const char **str)
{
struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
if (!aq_nic)
return -EIO;
if (type != hwmon_temp || attr != hwmon_temp_label)
return -EOPNOTSUPP;
if (channel < ARRAY_SIZE(atl_temp_label))
*str = atl_temp_label[channel];
else
return -EOPNOTSUPP;
return 0;
}
static umode_t aq_hwmon_is_visible(const void *data,
enum hwmon_sensor_types type,
u32 attr, int channel)
{
const struct aq_nic_s *nic = data;
if (type != hwmon_temp)
return 0;
if (channel == 0 && !nic->aq_fw_ops->get_phy_temp)
return 0;
else if (channel == 1 && !nic->aq_fw_ops->get_mac_temp &&
!nic->aq_hw_ops->hw_get_mac_temp)
return 0;
switch (attr) {
case hwmon_temp_input:
case hwmon_temp_label:
return 0444;
default:
return 0;
}
}
static const struct hwmon_ops aq_hwmon_ops = {
.is_visible = aq_hwmon_is_visible,
.read = aq_hwmon_read,
.read_string = aq_hwmon_read_string,
};
static u32 aq_hwmon_temp_config[] = {
HWMON_T_INPUT | HWMON_T_LABEL,
HWMON_T_INPUT | HWMON_T_LABEL,
0,
};
static const struct hwmon_channel_info aq_hwmon_temp = {
.type = hwmon_temp,
.config = aq_hwmon_temp_config,
};
static const struct hwmon_channel_info * const aq_hwmon_info[] = {
&aq_hwmon_temp,
NULL,
};
static const struct hwmon_chip_info aq_hwmon_chip_info = {
.ops = &aq_hwmon_ops,
.info = aq_hwmon_info,
};
int aq_drvinfo_init(struct net_device *ndev)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct device *dev = &aq_nic->pdev->dev;
struct device *hwmon_dev;
int err = 0;
hwmon_dev = devm_hwmon_device_register_with_info(dev,
ndev->name,
aq_nic,
&aq_hwmon_chip_info,
NULL);
if (IS_ERR(hwmon_dev))
err = PTR_ERR(hwmon_dev);
return err;
}
#else
int aq_drvinfo_init(struct net_device *ndev) { return 0; }
#endif
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