/* * Copyright (c) 2015, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include #include #include #include "tsens.h" static int tsens_get_temp(void *data, int *temp) { const struct tsens_sensor *s = data; struct tsens_device *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_device *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_device *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_device *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, }, {} }; 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_device *tmdev) { int i; struct thermal_zone_device *tzd; u32 *hw_id, n = tmdev->num_sensors; hw_id = devm_kcalloc(tmdev->dev, n, sizeof(u32), GFP_KERNEL); if (!hw_id) return -ENOMEM; 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_sensor *s; struct tsens_device *tmdev; const struct tsens_data *data; const struct of_device_id *id; 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; if (data->num_sensors <= 0) { dev_err(dev, "invalid number of sensors\n"); return -EINVAL; } tmdev = devm_kzalloc(dev, sizeof(*tmdev) + data->num_sensors * sizeof(*s), GFP_KERNEL); if (!tmdev) return -ENOMEM; tmdev->dev = dev; tmdev->num_sensors = data->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; } 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_device *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"); lass='ls-size'>7613logplain -rw-r--r--features.h1988logplain -rw-r--r--grant_table.h20945logplain d---------hvm72logplain d---------io429logplain -rw-r--r--memory.h8664logplain -rw-r--r--nmi.h1507logplain