diff options
Diffstat (limited to 'drivers/hwmon/scpi-hwmon.c')
| -rw-r--r-- | drivers/hwmon/scpi-hwmon.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/drivers/hwmon/scpi-hwmon.c b/drivers/hwmon/scpi-hwmon.c index 111d521e2189..a0d220609565 100644 --- a/drivers/hwmon/scpi-hwmon.c +++ b/drivers/hwmon/scpi-hwmon.c @@ -1,22 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 /* * System Control and Power Interface(SCPI) based hwmon sensor driver * * Copyright (C) 2015 ARM Ltd. * Punit Agrawal <punit.agrawal@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/hwmon.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/scpi_protocol.h> #include <linux/slab.h> @@ -70,9 +62,9 @@ static void scpi_scale_reading(u64 *value, struct sensor_data *sensor) } } -static int scpi_read_temp(void *dev, int *temp) +static int scpi_read_temp(struct thermal_zone_device *tz, int *temp) { - struct scpi_thermal_zone *zone = dev; + struct scpi_thermal_zone *zone = thermal_zone_device_priv(tz); struct scpi_sensors *scpi_sensors = zone->scpi_sensors; struct scpi_ops *scpi_ops = scpi_sensors->scpi_ops; struct sensor_data *sensor = &scpi_sensors->data[zone->sensor_id]; @@ -107,6 +99,15 @@ scpi_show_sensor(struct device *dev, struct device_attribute *attr, char *buf) scpi_scale_reading(&value, sensor); + /* + * Temperature sensor values are treated as signed values based on + * observation even though that is not explicitly specified, and + * because an unsigned u64 temperature does not really make practical + * sense especially when the temperature is below zero degrees Celsius. + */ + if (sensor->info.class == TEMPERATURE) + return sprintf(buf, "%lld\n", (s64)value); + return sprintf(buf, "%llu\n", value); } @@ -120,7 +121,7 @@ scpi_show_label(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%s\n", sensor->info.name); } -static const struct thermal_zone_of_device_ops scpi_sensor_ops = { +static const struct thermal_zone_device_ops scpi_sensor_ops = { .get_temp = scpi_read_temp, }; @@ -140,7 +141,6 @@ static int scpi_hwmon_probe(struct platform_device *pdev) struct scpi_ops *scpi_ops; struct device *hwdev, *dev = &pdev->dev; struct scpi_sensors *scpi_sensors; - const struct of_device_id *of_id; int idx, ret; scpi_ops = get_scpi_ops(); @@ -170,12 +170,11 @@ static int scpi_hwmon_probe(struct platform_device *pdev) scpi_sensors->scpi_ops = scpi_ops; - of_id = of_match_device(scpi_of_match, &pdev->dev); - if (!of_id) { + scale = of_device_get_match_data(&pdev->dev); + if (!scale) { dev_err(&pdev->dev, "Unable to initialize scpi-hwmon data\n"); return -ENODEV; } - scale = of_id->data; for (i = 0, idx = 0; i < nr_sensors; i++) { struct sensor_data *sensor = &scpi_sensors->data[idx]; @@ -226,11 +225,11 @@ static int scpi_hwmon_probe(struct platform_device *pdev) sensor->scale = scale[sensor->info.class]; - sensor->dev_attr_input.attr.mode = S_IRUGO; + sensor->dev_attr_input.attr.mode = 0444; sensor->dev_attr_input.show = scpi_show_sensor; sensor->dev_attr_input.attr.name = sensor->input; - sensor->dev_attr_label.attr.mode = S_IRUGO; + sensor->dev_attr_label.attr.mode = 0444; sensor->dev_attr_label.show = scpi_show_label; sensor->dev_attr_label.attr.name = sensor->label; @@ -276,10 +275,10 @@ static int scpi_hwmon_probe(struct platform_device *pdev) zone->sensor_id = i; zone->scpi_sensors = scpi_sensors; - z = devm_thermal_zone_of_sensor_register(dev, - sensor->info.sensor_id, - zone, - &scpi_sensor_ops); + z = devm_thermal_of_zone_register(dev, + sensor->info.sensor_id, + zone, + &scpi_sensor_ops); /* * The call to thermal_zone_of_sensor_register returns * an error for sensors that are not associated with |