1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/thermal.h>
#include "tsens.h"
static int tsens_get_temp(void *data, int *temp)
{
const struct tsens_sensor *s = data;
struct tsens_priv *tmdev = s->tmdev;
return tmdev->ops->get_temp(tmdev, s->id, temp);
}
static int tsens_get_trend(void *p, int trip, enum thermal_trend *trend)
{
const struct tsens_sensor *s = p;
struct tsens_priv *tmdev = s->tmdev;
if (tmdev->ops->get_trend)
return tmdev->ops->get_trend(tmdev, s->id, trend);
return -ENOTSUPP;
}
static int __maybe_unused tsens_suspend(struct device *dev)
{
struct tsens_priv *tmdev = dev_get_drvdata(dev);
if (tmdev->ops && tmdev->ops->suspend)
return tmdev->ops->suspend(tmdev);
return 0;
}
static int __maybe_unused tsens_resume(struct device *dev)
{
struct tsens_priv *tmdev = dev_get_drvdata(dev);
if (tmdev->ops && tmdev->ops->resume)
return tmdev->ops->resume(tmdev);
return 0;
}
static SIMPLE_DEV_PM_OPS(tsens_pm_ops, tsens_suspend, tsens_resume);
static const struct of_device_id tsens_table[] = {
{
.compatible = "qcom,msm8916-tsens",
.data = &data_8916,
}, {
.compatible = "qcom,msm8974-tsens",
.data = &data_8974,
}, {
.compatible = "qcom,msm8996-tsens",
.data = &data_8996,
}, {
.compatible = "qcom,tsens-v2",
.data = &data_tsens_v2,
},
{}
};
MODULE_DEVICE_TABLE(of, tsens_table);
static const struct thermal_zone_of_device_ops tsens_of_ops = {
.get_temp = tsens_get_temp,
.get_trend = tsens_get_trend,
};
static int tsens_register(struct tsens_priv *tmdev)
{
int i;
struct thermal_zone_device *tzd;
for (i = 0; i < tmdev->num_sensors; i++) {
tmdev->sensor[i].tmdev = tmdev;
tmdev->sensor[i].id = i;
tzd = devm_thermal_zone_of_sensor_register(tmdev->dev, i,
&tmdev->sensor[i],
&tsens_of_ops);
if (IS_ERR(tzd))
continue;
tmdev->sensor[i].tzd = tzd;
if (tmdev->ops->enable)
tmdev->ops->enable(tmdev, i);
}
return 0;
}
static int tsens_probe(struct platform_device *pdev)
{
int ret, i;
struct device *dev;
struct device_node *np;
struct tsens_priv *tmdev;
const struct tsens_plat_data *data;
const struct of_device_id *id;
u32 num_sensors;
if (pdev->dev.of_node)
dev = &pdev->dev;
else
dev = pdev->dev.parent;
np = dev->of_node;
id = of_match_node(tsens_table, np);
if (id)
data = id->data;
else
data = &data_8960;
num_sensors = data->num_sensors;
if (np)
of_property_read_u32(np, "#qcom,sensors", &num_sensors);
if (num_sensors <= 0) {
dev_err(dev, "invalid number of sensors\n");
return -EINVAL;
}
tmdev = devm_kzalloc(dev,
struct_size(tmdev, sensor, num_sensors),
GFP_KERNEL);
if (!tmdev)
return -ENOMEM;
tmdev->dev = dev;
tmdev->num_sensors = num_sensors;
tmdev->ops = data->ops;
for (i = 0; i < tmdev->num_sensors; i++) {
if (data->hw_ids)
tmdev->sensor[i].hw_id = data->hw_ids[i];
else
tmdev->sensor[i].hw_id = i;
}
for (i = 0; i < REG_ARRAY_SIZE; i++) {
tmdev->reg_offsets[i] = data->reg_offsets[i];
}
if (!tmdev->ops || !tmdev->ops->init || !tmdev->ops->get_temp)
return -EINVAL;
ret = tmdev->ops->init(tmdev);
if (ret < 0) {
dev_err(dev, "tsens init failed\n");
return ret;
}
if (tmdev->ops->calibrate) {
ret = tmdev->ops->calibrate(tmdev);
if (ret < 0) {
dev_err(dev, "tsens calibration failed\n");
return ret;
}
}
ret = tsens_register(tmdev);
platform_set_drvdata(pdev, tmdev);
return ret;
}
static int tsens_remove(struct platform_device *pdev)
{
struct tsens_priv *tmdev = platform_get_drvdata(pdev);
if (tmdev->ops->disable)
tmdev->ops->disable(tmdev);
return 0;
}
static struct platform_driver tsens_driver = {
.probe = tsens_probe,
.remove = tsens_remove,
.driver = {
.name = "qcom-tsens",
.pm = &tsens_pm_ops,
.of_match_table = tsens_table,
},
};
module_platform_driver(tsens_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("QCOM Temperature Sensor driver");
MODULE_ALIAS("platform:qcom-tsens");
|
