mirror of https://gitee.com/openkylin/linux.git
207 lines
4.3 KiB
C
207 lines
4.3 KiB
C
// 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 *priv = s->priv;
|
|
|
|
return priv->ops->get_temp(priv, s->id, temp);
|
|
}
|
|
|
|
static int tsens_get_trend(void *data, int trip, enum thermal_trend *trend)
|
|
{
|
|
const struct tsens_sensor *s = data;
|
|
struct tsens_priv *priv = s->priv;
|
|
|
|
if (priv->ops->get_trend)
|
|
return priv->ops->get_trend(priv, s->id, trend);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static int __maybe_unused tsens_suspend(struct device *dev)
|
|
{
|
|
struct tsens_priv *priv = dev_get_drvdata(dev);
|
|
|
|
if (priv->ops && priv->ops->suspend)
|
|
return priv->ops->suspend(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused tsens_resume(struct device *dev)
|
|
{
|
|
struct tsens_priv *priv = dev_get_drvdata(dev);
|
|
|
|
if (priv->ops && priv->ops->resume)
|
|
return priv->ops->resume(priv);
|
|
|
|
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-v1",
|
|
.data = &data_tsens_v1,
|
|
}, {
|
|
.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 *priv)
|
|
{
|
|
int i;
|
|
struct thermal_zone_device *tzd;
|
|
|
|
for (i = 0; i < priv->num_sensors; i++) {
|
|
if (!is_sensor_enabled(priv, priv->sensor[i].hw_id)) {
|
|
dev_err(priv->dev, "sensor %d: disabled\n",
|
|
priv->sensor[i].hw_id);
|
|
continue;
|
|
}
|
|
priv->sensor[i].priv = priv;
|
|
priv->sensor[i].id = i;
|
|
tzd = devm_thermal_zone_of_sensor_register(priv->dev, i,
|
|
&priv->sensor[i],
|
|
&tsens_of_ops);
|
|
if (IS_ERR(tzd))
|
|
continue;
|
|
priv->sensor[i].tzd = tzd;
|
|
if (priv->ops->enable)
|
|
priv->ops->enable(priv, i);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int tsens_probe(struct platform_device *pdev)
|
|
{
|
|
int ret, i;
|
|
struct device *dev;
|
|
struct device_node *np;
|
|
struct tsens_priv *priv;
|
|
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;
|
|
}
|
|
|
|
priv = devm_kzalloc(dev,
|
|
struct_size(priv, sensor, num_sensors),
|
|
GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->dev = dev;
|
|
priv->num_sensors = num_sensors;
|
|
priv->ops = data->ops;
|
|
for (i = 0; i < priv->num_sensors; i++) {
|
|
if (data->hw_ids)
|
|
priv->sensor[i].hw_id = data->hw_ids[i];
|
|
else
|
|
priv->sensor[i].hw_id = i;
|
|
}
|
|
priv->feat = data->feat;
|
|
priv->fields = data->fields;
|
|
|
|
if (!priv->ops || !priv->ops->init || !priv->ops->get_temp)
|
|
return -EINVAL;
|
|
|
|
ret = priv->ops->init(priv);
|
|
if (ret < 0) {
|
|
dev_err(dev, "tsens init failed\n");
|
|
return ret;
|
|
}
|
|
|
|
if (priv->ops->calibrate) {
|
|
ret = priv->ops->calibrate(priv);
|
|
if (ret < 0) {
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(dev, "tsens calibration failed\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = tsens_register(priv);
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsens_remove(struct platform_device *pdev)
|
|
{
|
|
struct tsens_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
if (priv->ops->disable)
|
|
priv->ops->disable(priv);
|
|
|
|
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");
|