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![Amit Kucheria](/assets/img/avatar_default.png)
SDM845 uses v2 of the TSENS IP block but the get_temp() function appears to be identical across v2.x.y in code seen so far. We use the generic get_temp() function defined as part of ops_generic_v2. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
209 lines
4.6 KiB
C
209 lines
4.6 KiB
C
/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/slab.h>
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#include <linux/thermal.h>
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#include "tsens.h"
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static int tsens_get_temp(void *data, int *temp)
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{
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const struct tsens_sensor *s = data;
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struct tsens_device *tmdev = s->tmdev;
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return tmdev->ops->get_temp(tmdev, s->id, temp);
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}
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static int tsens_get_trend(void *p, int trip, enum thermal_trend *trend)
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{
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const struct tsens_sensor *s = p;
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struct tsens_device *tmdev = s->tmdev;
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if (tmdev->ops->get_trend)
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return tmdev->ops->get_trend(tmdev, s->id, trend);
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return -ENOTSUPP;
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}
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static int __maybe_unused tsens_suspend(struct device *dev)
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{
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struct tsens_device *tmdev = dev_get_drvdata(dev);
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if (tmdev->ops && tmdev->ops->suspend)
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return tmdev->ops->suspend(tmdev);
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return 0;
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}
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static int __maybe_unused tsens_resume(struct device *dev)
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{
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struct tsens_device *tmdev = dev_get_drvdata(dev);
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if (tmdev->ops && tmdev->ops->resume)
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return tmdev->ops->resume(tmdev);
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return 0;
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}
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static SIMPLE_DEV_PM_OPS(tsens_pm_ops, tsens_suspend, tsens_resume);
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static const struct of_device_id tsens_table[] = {
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{
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.compatible = "qcom,msm8916-tsens",
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.data = &data_8916,
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}, {
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.compatible = "qcom,msm8974-tsens",
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.data = &data_8974,
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}, {
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.compatible = "qcom,msm8996-tsens",
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.data = &data_8996,
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}, {
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.compatible = "qcom,tsens-v2",
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.data = &data_tsens_v2,
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},
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{}
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};
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MODULE_DEVICE_TABLE(of, tsens_table);
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static const struct thermal_zone_of_device_ops tsens_of_ops = {
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.get_temp = tsens_get_temp,
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.get_trend = tsens_get_trend,
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};
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static int tsens_register(struct tsens_device *tmdev)
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{
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int i;
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struct thermal_zone_device *tzd;
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u32 *hw_id, n = tmdev->num_sensors;
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hw_id = devm_kcalloc(tmdev->dev, n, sizeof(u32), GFP_KERNEL);
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if (!hw_id)
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return -ENOMEM;
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for (i = 0; i < tmdev->num_sensors; i++) {
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tmdev->sensor[i].tmdev = tmdev;
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tmdev->sensor[i].id = i;
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tzd = devm_thermal_zone_of_sensor_register(tmdev->dev, i,
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&tmdev->sensor[i],
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&tsens_of_ops);
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if (IS_ERR(tzd))
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continue;
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tmdev->sensor[i].tzd = tzd;
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if (tmdev->ops->enable)
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tmdev->ops->enable(tmdev, i);
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}
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return 0;
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}
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static int tsens_probe(struct platform_device *pdev)
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{
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int ret, i;
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struct device *dev;
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struct device_node *np;
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struct tsens_device *tmdev;
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const struct tsens_data *data;
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const struct of_device_id *id;
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u32 num_sensors;
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if (pdev->dev.of_node)
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dev = &pdev->dev;
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else
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dev = pdev->dev.parent;
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np = dev->of_node;
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id = of_match_node(tsens_table, np);
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if (id)
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data = id->data;
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else
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data = &data_8960;
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num_sensors = data->num_sensors;
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if (np)
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of_property_read_u32(np, "#qcom,sensors", &num_sensors);
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if (num_sensors <= 0) {
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dev_err(dev, "invalid number of sensors\n");
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return -EINVAL;
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}
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tmdev = devm_kzalloc(dev,
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struct_size(tmdev, sensor, num_sensors),
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GFP_KERNEL);
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if (!tmdev)
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return -ENOMEM;
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tmdev->dev = dev;
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tmdev->num_sensors = num_sensors;
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tmdev->ops = data->ops;
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for (i = 0; i < tmdev->num_sensors; i++) {
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if (data->hw_ids)
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tmdev->sensor[i].hw_id = data->hw_ids[i];
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else
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tmdev->sensor[i].hw_id = i;
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}
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if (!tmdev->ops || !tmdev->ops->init || !tmdev->ops->get_temp)
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return -EINVAL;
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ret = tmdev->ops->init(tmdev);
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if (ret < 0) {
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dev_err(dev, "tsens init failed\n");
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return ret;
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}
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if (tmdev->ops->calibrate) {
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ret = tmdev->ops->calibrate(tmdev);
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if (ret < 0) {
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dev_err(dev, "tsens calibration failed\n");
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return ret;
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}
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}
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ret = tsens_register(tmdev);
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platform_set_drvdata(pdev, tmdev);
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return ret;
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}
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static int tsens_remove(struct platform_device *pdev)
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{
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struct tsens_device *tmdev = platform_get_drvdata(pdev);
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if (tmdev->ops->disable)
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tmdev->ops->disable(tmdev);
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return 0;
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}
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static struct platform_driver tsens_driver = {
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.probe = tsens_probe,
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.remove = tsens_remove,
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.driver = {
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.name = "qcom-tsens",
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.pm = &tsens_pm_ops,
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.of_match_table = tsens_table,
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},
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};
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module_platform_driver(tsens_driver);
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("QCOM Temperature Sensor driver");
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MODULE_ALIAS("platform:qcom-tsens");
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