1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /* Atlantic Network Driver
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2014-2019 aQuantia Corporation
5*4882a593Smuzhiyun * Copyright (C) 2019-2020 Marvell International Ltd.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /* File aq_drvinfo.c: Definition of common code for firmware info in sys.*/
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/init.h>
11*4882a593Smuzhiyun #include <linux/kobject.h>
12*4882a593Smuzhiyun #include <linux/module.h>
13*4882a593Smuzhiyun #include <linux/stat.h>
14*4882a593Smuzhiyun #include <linux/string.h>
15*4882a593Smuzhiyun #include <linux/hwmon.h>
16*4882a593Smuzhiyun #include <linux/uaccess.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "aq_drvinfo.h"
19*4882a593Smuzhiyun #include "aq_nic.h"
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #if IS_REACHABLE(CONFIG_HWMON)
22*4882a593Smuzhiyun static const char * const atl_temp_label[] = {
23*4882a593Smuzhiyun "PHY Temperature",
24*4882a593Smuzhiyun "MAC Temperature",
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
aq_hwmon_read(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,long * value)27*4882a593Smuzhiyun static int aq_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
28*4882a593Smuzhiyun u32 attr, int channel, long *value)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
31*4882a593Smuzhiyun int err = 0;
32*4882a593Smuzhiyun int temp;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (!aq_nic)
35*4882a593Smuzhiyun return -EIO;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun if (type != hwmon_temp || attr != hwmon_temp_input)
38*4882a593Smuzhiyun return -EOPNOTSUPP;
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun switch (channel) {
41*4882a593Smuzhiyun case 0:
42*4882a593Smuzhiyun if (!aq_nic->aq_fw_ops->get_phy_temp)
43*4882a593Smuzhiyun return -EOPNOTSUPP;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun err = aq_nic->aq_fw_ops->get_phy_temp(aq_nic->aq_hw, &temp);
46*4882a593Smuzhiyun *value = temp;
47*4882a593Smuzhiyun break;
48*4882a593Smuzhiyun case 1:
49*4882a593Smuzhiyun if (!aq_nic->aq_fw_ops->get_mac_temp &&
50*4882a593Smuzhiyun !aq_nic->aq_hw_ops->hw_get_mac_temp)
51*4882a593Smuzhiyun return -EOPNOTSUPP;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun if (aq_nic->aq_fw_ops->get_mac_temp)
54*4882a593Smuzhiyun err = aq_nic->aq_fw_ops->get_mac_temp(aq_nic->aq_hw, &temp);
55*4882a593Smuzhiyun else
56*4882a593Smuzhiyun err = aq_nic->aq_hw_ops->hw_get_mac_temp(aq_nic->aq_hw, &temp);
57*4882a593Smuzhiyun *value = temp;
58*4882a593Smuzhiyun break;
59*4882a593Smuzhiyun default:
60*4882a593Smuzhiyun return -EOPNOTSUPP;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun return err;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
aq_hwmon_read_string(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,const char ** str)66*4882a593Smuzhiyun static int aq_hwmon_read_string(struct device *dev,
67*4882a593Smuzhiyun enum hwmon_sensor_types type,
68*4882a593Smuzhiyun u32 attr, int channel, const char **str)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun if (!aq_nic)
73*4882a593Smuzhiyun return -EIO;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun if (type != hwmon_temp || attr != hwmon_temp_label)
76*4882a593Smuzhiyun return -EOPNOTSUPP;
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun if (channel < ARRAY_SIZE(atl_temp_label))
79*4882a593Smuzhiyun *str = atl_temp_label[channel];
80*4882a593Smuzhiyun else
81*4882a593Smuzhiyun return -EOPNOTSUPP;
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun return 0;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
aq_hwmon_is_visible(const void * data,enum hwmon_sensor_types type,u32 attr,int channel)86*4882a593Smuzhiyun static umode_t aq_hwmon_is_visible(const void *data,
87*4882a593Smuzhiyun enum hwmon_sensor_types type,
88*4882a593Smuzhiyun u32 attr, int channel)
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun const struct aq_nic_s *nic = data;
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun if (type != hwmon_temp)
93*4882a593Smuzhiyun return 0;
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun if (channel == 0 && !nic->aq_fw_ops->get_phy_temp)
96*4882a593Smuzhiyun return 0;
97*4882a593Smuzhiyun else if (channel == 1 && !nic->aq_fw_ops->get_mac_temp &&
98*4882a593Smuzhiyun !nic->aq_hw_ops->hw_get_mac_temp)
99*4882a593Smuzhiyun return 0;
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun switch (attr) {
102*4882a593Smuzhiyun case hwmon_temp_input:
103*4882a593Smuzhiyun case hwmon_temp_label:
104*4882a593Smuzhiyun return 0444;
105*4882a593Smuzhiyun default:
106*4882a593Smuzhiyun return 0;
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun static const struct hwmon_ops aq_hwmon_ops = {
111*4882a593Smuzhiyun .is_visible = aq_hwmon_is_visible,
112*4882a593Smuzhiyun .read = aq_hwmon_read,
113*4882a593Smuzhiyun .read_string = aq_hwmon_read_string,
114*4882a593Smuzhiyun };
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun static u32 aq_hwmon_temp_config[] = {
117*4882a593Smuzhiyun HWMON_T_INPUT | HWMON_T_LABEL,
118*4882a593Smuzhiyun HWMON_T_INPUT | HWMON_T_LABEL,
119*4882a593Smuzhiyun 0,
120*4882a593Smuzhiyun };
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun static const struct hwmon_channel_info aq_hwmon_temp = {
123*4882a593Smuzhiyun .type = hwmon_temp,
124*4882a593Smuzhiyun .config = aq_hwmon_temp_config,
125*4882a593Smuzhiyun };
126*4882a593Smuzhiyun
127*4882a593Smuzhiyun static const struct hwmon_channel_info *aq_hwmon_info[] = {
128*4882a593Smuzhiyun &aq_hwmon_temp,
129*4882a593Smuzhiyun NULL,
130*4882a593Smuzhiyun };
131*4882a593Smuzhiyun
132*4882a593Smuzhiyun static const struct hwmon_chip_info aq_hwmon_chip_info = {
133*4882a593Smuzhiyun .ops = &aq_hwmon_ops,
134*4882a593Smuzhiyun .info = aq_hwmon_info,
135*4882a593Smuzhiyun };
136*4882a593Smuzhiyun
aq_drvinfo_init(struct net_device * ndev)137*4882a593Smuzhiyun int aq_drvinfo_init(struct net_device *ndev)
138*4882a593Smuzhiyun {
139*4882a593Smuzhiyun struct aq_nic_s *aq_nic = netdev_priv(ndev);
140*4882a593Smuzhiyun struct device *dev = &aq_nic->pdev->dev;
141*4882a593Smuzhiyun struct device *hwmon_dev;
142*4882a593Smuzhiyun int err = 0;
143*4882a593Smuzhiyun
144*4882a593Smuzhiyun hwmon_dev = devm_hwmon_device_register_with_info(dev,
145*4882a593Smuzhiyun ndev->name,
146*4882a593Smuzhiyun aq_nic,
147*4882a593Smuzhiyun &aq_hwmon_chip_info,
148*4882a593Smuzhiyun NULL);
149*4882a593Smuzhiyun
150*4882a593Smuzhiyun if (IS_ERR(hwmon_dev))
151*4882a593Smuzhiyun err = PTR_ERR(hwmon_dev);
152*4882a593Smuzhiyun
153*4882a593Smuzhiyun return err;
154*4882a593Smuzhiyun }
155*4882a593Smuzhiyun
156*4882a593Smuzhiyun #else
aq_drvinfo_init(struct net_device * ndev)157*4882a593Smuzhiyun int aq_drvinfo_init(struct net_device *ndev) { return 0; }
158*4882a593Smuzhiyun #endif
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