thermal/of: Remove old OF code
All the drivers are converted to the new OF API, remove the old OF code. Signed-off-by: Daniel Lezcano <daniel.lezcano@linexp.org> Link: https://lore.kernel.org/r/20220804224349.1926752-34-daniel.lezcano@linexp.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Daniel Lezcano
Daniel Lezcano
parent
9326167058
commit
f59ac19b7f
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@ -135,13 +135,11 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
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/* device tree support */
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#ifdef CONFIG_THERMAL_OF
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int of_parse_thermal_zones(void);
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int of_thermal_get_ntrips(struct thermal_zone_device *);
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bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
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const struct thermal_trip *
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of_thermal_get_trip_points(struct thermal_zone_device *);
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#else
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static inline int of_parse_thermal_zones(void) { return 0; }
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static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
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{
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return 0;
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@ -19,93 +19,6 @@
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#include "thermal_core.h"
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/*** Private data structures to represent thermal device tree data ***/
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/**
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* struct __thermal_cooling_bind_param - a cooling device for a trip point
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* @cooling_device: a pointer to identify the referred cooling device
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* @min: minimum cooling state used at this trip point
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* @max: maximum cooling state used at this trip point
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*/
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struct __thermal_cooling_bind_param {
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struct device_node *cooling_device;
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unsigned long min;
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unsigned long max;
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};
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/**
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* struct __thermal_bind_params - a match between trip and cooling device
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* @tcbp: a pointer to an array of cooling devices
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* @count: number of elements in array
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* @trip_id: the trip point index
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* @usage: the percentage (from 0 to 100) of cooling contribution
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*/
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struct __thermal_bind_params {
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struct __thermal_cooling_bind_param *tcbp;
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unsigned int count;
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unsigned int trip_id;
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unsigned int usage;
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};
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/**
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* struct __thermal_zone - internal representation of a thermal zone
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* @passive_delay: polling interval while passive cooling is activated
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* @polling_delay: zone polling interval
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* @slope: slope of the temperature adjustment curve
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* @offset: offset of the temperature adjustment curve
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* @ntrips: number of trip points
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* @trips: an array of trip points (0..ntrips - 1)
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* @num_tbps: number of thermal bind params
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* @tbps: an array of thermal bind params (0..num_tbps - 1)
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* @sensor_data: sensor private data used while reading temperature and trend
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* @ops: set of callbacks to handle the thermal zone based on DT
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*/
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struct __thermal_zone {
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int passive_delay;
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int polling_delay;
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int slope;
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int offset;
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/* trip data */
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int ntrips;
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struct thermal_trip *trips;
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/* cooling binding data */
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int num_tbps;
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struct __thermal_bind_params *tbps;
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/* sensor interface */
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void *sensor_data;
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const struct thermal_zone_of_device_ops *ops;
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};
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/*** DT thermal zone device callbacks ***/
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static int of_thermal_get_temp(struct thermal_zone_device *tz,
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int *temp)
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{
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struct __thermal_zone *data = tz->devdata;
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if (!data->ops || !data->ops->get_temp)
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return -EINVAL;
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return data->ops->get_temp(data->sensor_data, temp);
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}
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static int of_thermal_set_trips(struct thermal_zone_device *tz,
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int low, int high)
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{
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struct __thermal_zone *data = tz->devdata;
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if (!data->ops || !data->ops->set_trips)
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return -EINVAL;
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return data->ops->set_trips(data->sensor_data, low, high);
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}
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/**
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* of_thermal_get_ntrips - function to export number of available trip
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* points.
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@ -158,114 +71,6 @@ of_thermal_get_trip_points(struct thermal_zone_device *tz)
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}
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EXPORT_SYMBOL_GPL(of_thermal_get_trip_points);
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/**
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* of_thermal_set_emul_temp - function to set emulated temperature
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*
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* @tz: pointer to a thermal zone
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* @temp: temperature to set
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*
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* This function gives the ability to set emulated value of temperature,
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* which is handy for debugging
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*
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* Return: zero on success, error code otherwise
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*/
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static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
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int temp)
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{
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struct __thermal_zone *data = tz->devdata;
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if (!data->ops || !data->ops->set_emul_temp)
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return -EINVAL;
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return data->ops->set_emul_temp(data->sensor_data, temp);
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}
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static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
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enum thermal_trend *trend)
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{
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struct __thermal_zone *data = tz->devdata;
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if (!data->ops || !data->ops->get_trend)
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return -EINVAL;
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return data->ops->get_trend(data->sensor_data, trip, trend);
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}
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static int of_thermal_change_mode(struct thermal_zone_device *tz,
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enum thermal_device_mode mode)
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{
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struct __thermal_zone *data = tz->devdata;
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return data->ops->change_mode(data->sensor_data, mode);
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}
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static int of_thermal_bind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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struct __thermal_zone *data = thermal->devdata;
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struct __thermal_bind_params *tbp;
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struct __thermal_cooling_bind_param *tcbp;
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int i, j;
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if (!data || IS_ERR(data))
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return -ENODEV;
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/* find where to bind */
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for (i = 0; i < data->num_tbps; i++) {
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tbp = data->tbps + i;
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for (j = 0; j < tbp->count; j++) {
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tcbp = tbp->tcbp + j;
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if (tcbp->cooling_device == cdev->np) {
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int ret;
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ret = thermal_zone_bind_cooling_device(thermal,
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tbp->trip_id, cdev,
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tcbp->max,
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tcbp->min,
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tbp->usage);
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if (ret)
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return ret;
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}
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}
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}
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return 0;
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}
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static int of_thermal_unbind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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struct __thermal_zone *data = thermal->devdata;
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struct __thermal_bind_params *tbp;
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struct __thermal_cooling_bind_param *tcbp;
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int i, j;
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if (!data || IS_ERR(data))
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return -ENODEV;
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/* find where to unbind */
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for (i = 0; i < data->num_tbps; i++) {
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tbp = data->tbps + i;
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for (j = 0; j < tbp->count; j++) {
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tcbp = tbp->tcbp + j;
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if (tcbp->cooling_device == cdev->np) {
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int ret;
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ret = thermal_zone_unbind_cooling_device(thermal,
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tbp->trip_id, cdev);
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if (ret)
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return ret;
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}
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}
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}
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return 0;
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}
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static int of_thermal_get_trip_type(struct thermal_zone_device *tz, int trip,
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enum thermal_trip_type *type)
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{
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@ -325,61 +130,6 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
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return -EINVAL;
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}
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static struct thermal_zone_device_ops of_thermal_ops = {
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.get_trip_type = of_thermal_get_trip_type,
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.get_trip_temp = of_thermal_get_trip_temp,
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.get_trip_hyst = of_thermal_get_trip_hyst,
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.set_trip_hyst = of_thermal_set_trip_hyst,
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.get_crit_temp = of_thermal_get_crit_temp,
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.bind = of_thermal_bind,
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.unbind = of_thermal_unbind,
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};
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/*** sensor API ***/
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static struct thermal_zone_device *
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thermal_zone_of_add_sensor(struct device_node *zone,
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struct device_node *sensor, void *data,
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const struct thermal_zone_of_device_ops *ops)
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{
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struct thermal_zone_device *tzd;
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struct __thermal_zone *tz;
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tzd = thermal_zone_get_zone_by_name(zone->name);
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if (IS_ERR(tzd))
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return ERR_PTR(-EPROBE_DEFER);
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tz = tzd->devdata;
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if (!ops)
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return ERR_PTR(-EINVAL);
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mutex_lock(&tzd->lock);
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tz->ops = ops;
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tz->sensor_data = data;
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tzd->ops->get_temp = of_thermal_get_temp;
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tzd->ops->get_trend = of_thermal_get_trend;
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/*
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* The thermal zone core will calculate the window if they have set the
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* optional set_trips pointer.
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*/
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if (ops->set_trips)
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tzd->ops->set_trips = of_thermal_set_trips;
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if (ops->set_emul_temp)
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tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
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if (ops->change_mode)
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tzd->ops->change_mode = of_thermal_change_mode;
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mutex_unlock(&tzd->lock);
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return tzd;
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}
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/**
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* thermal_zone_of_get_sensor_id - get sensor ID from a DT thermal zone
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* @tz_np: a valid thermal zone device node.
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@ -424,216 +174,6 @@ int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
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}
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EXPORT_SYMBOL_GPL(thermal_zone_of_get_sensor_id);
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/**
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* thermal_zone_of_sensor_register - registers a sensor to a DT thermal zone
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* @dev: a valid struct device pointer of a sensor device. Must contain
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* a valid .of_node, for the sensor node.
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* @sensor_id: a sensor identifier, in case the sensor IP has more
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* than one sensors
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* @data: a private pointer (owned by the caller) that will be passed
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* back, when a temperature reading is needed.
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* @ops: struct thermal_zone_of_device_ops *. Must contain at least .get_temp.
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*
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* This function will search the list of thermal zones described in device
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* tree and look for the zone that refer to the sensor device pointed by
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* @dev->of_node as temperature providers. For the zone pointing to the
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* sensor node, the sensor will be added to the DT thermal zone device.
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*
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* The thermal zone temperature is provided by the @get_temp function
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* pointer. When called, it will have the private pointer @data back.
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*
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* The thermal zone temperature trend is provided by the @get_trend function
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* pointer. When called, it will have the private pointer @data back.
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*
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* TODO:
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* 01 - This function must enqueue the new sensor instead of using
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* it as the only source of temperature values.
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*
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* 02 - There must be a way to match the sensor with all thermal zones
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* that refer to it.
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*
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* Return: On success returns a valid struct thermal_zone_device,
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* otherwise, it returns a corresponding ERR_PTR(). Caller must
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* check the return value with help of IS_ERR() helper.
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*/
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struct thermal_zone_device *
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thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data,
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const struct thermal_zone_of_device_ops *ops)
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{
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struct device_node *np, *child, *sensor_np;
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struct thermal_zone_device *tzd = ERR_PTR(-ENODEV);
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static int old_tz_initialized;
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int ret;
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if (!old_tz_initialized) {
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ret = of_parse_thermal_zones();
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if (ret)
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return ERR_PTR(ret);
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old_tz_initialized = 1;
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}
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np = of_find_node_by_name(NULL, "thermal-zones");
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if (!np)
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return ERR_PTR(-ENODEV);
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if (!dev || !dev->of_node) {
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of_node_put(np);
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return ERR_PTR(-ENODEV);
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}
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sensor_np = of_node_get(dev->of_node);
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for_each_available_child_of_node(np, child) {
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int ret, id;
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/* For now, thermal framework supports only 1 sensor per zone */
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ret = thermal_zone_of_get_sensor_id(child, sensor_np, &id);
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if (ret)
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continue;
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if (id == sensor_id) {
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tzd = thermal_zone_of_add_sensor(child, sensor_np,
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data, ops);
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if (!IS_ERR(tzd))
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thermal_zone_device_enable(tzd);
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of_node_put(child);
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goto exit;
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}
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}
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exit:
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of_node_put(sensor_np);
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of_node_put(np);
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return tzd;
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}
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EXPORT_SYMBOL_GPL(thermal_zone_of_sensor_register);
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/**
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* thermal_zone_of_sensor_unregister - unregisters a sensor from a DT thermal zone
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* @dev: a valid struct device pointer of a sensor device. Must contain
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* a valid .of_node, for the sensor node.
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* @tzd: a pointer to struct thermal_zone_device where the sensor is registered.
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*
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* This function removes the sensor callbacks and private data from the
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* thermal zone device registered with thermal_zone_of_sensor_register()
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* API. It will also silent the zone by remove the .get_temp() and .get_trend()
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* thermal zone device callbacks.
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*
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* TODO: When the support to several sensors per zone is added, this
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* function must search the sensor list based on @dev parameter.
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*
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*/
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void thermal_zone_of_sensor_unregister(struct device *dev,
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struct thermal_zone_device *tzd)
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{
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struct __thermal_zone *tz;
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if (!dev || !tzd || !tzd->devdata)
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return;
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tz = tzd->devdata;
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/* no __thermal_zone, nothing to be done */
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if (!tz)
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return;
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/* stop temperature polling */
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thermal_zone_device_disable(tzd);
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mutex_lock(&tzd->lock);
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tzd->ops->get_temp = NULL;
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tzd->ops->get_trend = NULL;
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tzd->ops->set_emul_temp = NULL;
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tzd->ops->change_mode = NULL;
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tz->ops = NULL;
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tz->sensor_data = NULL;
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mutex_unlock(&tzd->lock);
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}
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EXPORT_SYMBOL_GPL(thermal_zone_of_sensor_unregister);
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static void devm_thermal_zone_of_sensor_release(struct device *dev, void *res)
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{
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thermal_zone_of_sensor_unregister(dev,
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*(struct thermal_zone_device **)res);
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}
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static int devm_thermal_zone_of_sensor_match(struct device *dev, void *res,
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void *data)
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{
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struct thermal_zone_device **r = res;
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if (WARN_ON(!r || !*r))
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return 0;
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return *r == data;
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}
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/**
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* devm_thermal_zone_of_sensor_register - Resource managed version of
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* thermal_zone_of_sensor_register()
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* @dev: a valid struct device pointer of a sensor device. Must contain
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* a valid .of_node, for the sensor node.
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* @sensor_id: a sensor identifier, in case the sensor IP has more
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* than one sensors
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* @data: a private pointer (owned by the caller) that will be passed
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* back, when a temperature reading is needed.
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* @ops: struct thermal_zone_of_device_ops *. Must contain at least .get_temp.
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*
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* Refer thermal_zone_of_sensor_register() for more details.
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*
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* Return: On success returns a valid struct thermal_zone_device,
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* otherwise, it returns a corresponding ERR_PTR(). Caller must
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* check the return value with help of IS_ERR() helper.
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* Registered thermal_zone_device device will automatically be
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* released when device is unbounded.
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*/
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struct thermal_zone_device *devm_thermal_zone_of_sensor_register(
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struct device *dev, int sensor_id,
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void *data, const struct thermal_zone_of_device_ops *ops)
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{
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struct thermal_zone_device **ptr, *tzd;
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ptr = devres_alloc(devm_thermal_zone_of_sensor_release, sizeof(*ptr),
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GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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tzd = thermal_zone_of_sensor_register(dev, sensor_id, data, ops);
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if (IS_ERR(tzd)) {
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devres_free(ptr);
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return tzd;
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}
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*ptr = tzd;
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devres_add(dev, ptr);
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return tzd;
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}
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EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_register);
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/**
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* devm_thermal_zone_of_sensor_unregister - Resource managed version of
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* thermal_zone_of_sensor_unregister().
|
||||
* @dev: Device for which which resource was allocated.
|
||||
* @tzd: a pointer to struct thermal_zone_device where the sensor is registered.
|
||||
*
|
||||
* This function removes the sensor callbacks and private data from the
|
||||
* thermal zone device registered with devm_thermal_zone_of_sensor_register()
|
||||
* API. It will also silent the zone by remove the .get_temp() and .get_trend()
|
||||
* thermal zone device callbacks.
|
||||
* Normally this function will not need to be called and the resource
|
||||
* management code will ensure that the resource is freed.
|
||||
*/
|
||||
void devm_thermal_zone_of_sensor_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tzd)
|
||||
{
|
||||
WARN_ON(devres_release(dev, devm_thermal_zone_of_sensor_release,
|
||||
devm_thermal_zone_of_sensor_match, tzd));
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_unregister);
|
||||
|
||||
/*** functions parsing device tree nodes ***/
|
||||
|
||||
static int of_find_trip_id(struct device_node *np, struct device_node *trip)
|
||||
|
|
@ -665,98 +205,6 @@ out:
|
|||
return i;
|
||||
}
|
||||
|
||||
/**
|
||||
* thermal_of_populate_bind_params - parse and fill cooling map data
|
||||
* @np: DT node containing a cooling-map node
|
||||
* @__tbp: data structure to be filled with cooling map info
|
||||
* @trips: array of thermal zone trip points
|
||||
* @ntrips: number of trip points inside trips.
|
||||
*
|
||||
* This function parses a cooling-map type of node represented by
|
||||
* @np parameter and fills the read data into @__tbp data structure.
|
||||
* It needs the already parsed array of trip points of the thermal zone
|
||||
* in consideration.
|
||||
*
|
||||
* Return: 0 on success, proper error code otherwise
|
||||
*/
|
||||
static int thermal_of_populate_bind_params(struct device_node *tz_np,
|
||||
struct device_node *np,
|
||||
struct __thermal_bind_params *__tbp)
|
||||
{
|
||||
struct of_phandle_args cooling_spec;
|
||||
struct __thermal_cooling_bind_param *__tcbp;
|
||||
struct device_node *trip;
|
||||
int ret, i, count;
|
||||
int trip_id;
|
||||
u32 prop;
|
||||
|
||||
/* Default weight. Usage is optional */
|
||||
__tbp->usage = THERMAL_WEIGHT_DEFAULT;
|
||||
ret = of_property_read_u32(np, "contribution", &prop);
|
||||
if (ret == 0)
|
||||
__tbp->usage = prop;
|
||||
|
||||
trip = of_parse_phandle(np, "trip", 0);
|
||||
if (!trip) {
|
||||
pr_err("missing trip property\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
trip_id = of_find_trip_id(tz_np, trip);
|
||||
if (trip_id < 0) {
|
||||
ret = trip_id;
|
||||
goto end;
|
||||
}
|
||||
|
||||
__tbp->trip_id = trip_id;
|
||||
|
||||
count = of_count_phandle_with_args(np, "cooling-device",
|
||||
"#cooling-cells");
|
||||
if (count <= 0) {
|
||||
pr_err("Add a cooling_device property with at least one device\n");
|
||||
ret = -ENOENT;
|
||||
goto end;
|
||||
}
|
||||
|
||||
__tcbp = kcalloc(count, sizeof(*__tcbp), GFP_KERNEL);
|
||||
if (!__tcbp) {
|
||||
ret = -ENOMEM;
|
||||
goto end;
|
||||
}
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
ret = of_parse_phandle_with_args(np, "cooling-device",
|
||||
"#cooling-cells", i, &cooling_spec);
|
||||
if (ret < 0) {
|
||||
pr_err("Invalid cooling-device entry\n");
|
||||
goto free_tcbp;
|
||||
}
|
||||
|
||||
__tcbp[i].cooling_device = cooling_spec.np;
|
||||
|
||||
if (cooling_spec.args_count >= 2) { /* at least min and max */
|
||||
__tcbp[i].min = cooling_spec.args[0];
|
||||
__tcbp[i].max = cooling_spec.args[1];
|
||||
} else {
|
||||
pr_err("wrong reference to cooling device, missing limits\n");
|
||||
}
|
||||
}
|
||||
|
||||
__tbp->tcbp = __tcbp;
|
||||
__tbp->count = count;
|
||||
|
||||
goto end;
|
||||
|
||||
free_tcbp:
|
||||
for (i = i - 1; i >= 0; i--)
|
||||
of_node_put(__tcbp[i].cooling_device);
|
||||
kfree(__tcbp);
|
||||
end:
|
||||
of_node_put(trip);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* It maps 'enum thermal_trip_type' found in include/linux/thermal.h
|
||||
* into the device tree binding of 'trip', property type.
|
||||
|
|
@ -873,174 +321,6 @@ out_of_node_put:
|
|||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
/**
|
||||
* thermal_of_build_thermal_zone - parse and fill one thermal zone data
|
||||
* @np: DT node containing a thermal zone node
|
||||
*
|
||||
* This function parses a thermal zone type of node represented by
|
||||
* @np parameter and fills the read data into a __thermal_zone data structure
|
||||
* and return this pointer.
|
||||
*
|
||||
* TODO: Missing properties to parse: thermal-sensor-names
|
||||
*
|
||||
* Return: On success returns a valid struct __thermal_zone,
|
||||
* otherwise, it returns a corresponding ERR_PTR(). Caller must
|
||||
* check the return value with help of IS_ERR() helper.
|
||||
*/
|
||||
static struct __thermal_zone
|
||||
__init *thermal_of_build_thermal_zone(struct device_node *np)
|
||||
{
|
||||
struct device_node *child = NULL, *gchild;
|
||||
struct __thermal_zone *tz;
|
||||
int ret, i;
|
||||
u32 prop, coef[2];
|
||||
|
||||
if (!np) {
|
||||
pr_err("no thermal zone np\n");
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
tz = kzalloc(sizeof(*tz), GFP_KERNEL);
|
||||
if (!tz)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = of_property_read_u32(np, "polling-delay-passive", &prop);
|
||||
if (ret < 0) {
|
||||
pr_err("%pOFn: missing polling-delay-passive property\n", np);
|
||||
goto free_tz;
|
||||
}
|
||||
tz->passive_delay = prop;
|
||||
|
||||
ret = of_property_read_u32(np, "polling-delay", &prop);
|
||||
if (ret < 0) {
|
||||
pr_err("%pOFn: missing polling-delay property\n", np);
|
||||
goto free_tz;
|
||||
}
|
||||
tz->polling_delay = prop;
|
||||
|
||||
/*
|
||||
* REVIST: for now, the thermal framework supports only
|
||||
* one sensor per thermal zone. Thus, we are considering
|
||||
* only the first two values as slope and offset.
|
||||
*/
|
||||
ret = of_property_read_u32_array(np, "coefficients", coef, 2);
|
||||
if (ret == 0) {
|
||||
tz->slope = coef[0];
|
||||
tz->offset = coef[1];
|
||||
} else {
|
||||
tz->slope = 1;
|
||||
tz->offset = 0;
|
||||
}
|
||||
|
||||
tz->trips = thermal_of_trips_init(np, &tz->ntrips);
|
||||
if (IS_ERR(tz->trips)) {
|
||||
ret = PTR_ERR(tz->trips);
|
||||
goto finish;
|
||||
}
|
||||
|
||||
/* cooling-maps */
|
||||
child = of_get_child_by_name(np, "cooling-maps");
|
||||
|
||||
/* cooling-maps not provided */
|
||||
if (!child)
|
||||
goto finish;
|
||||
|
||||
tz->num_tbps = of_get_child_count(child);
|
||||
if (tz->num_tbps == 0)
|
||||
goto finish;
|
||||
|
||||
tz->tbps = kcalloc(tz->num_tbps, sizeof(*tz->tbps), GFP_KERNEL);
|
||||
if (!tz->tbps) {
|
||||
ret = -ENOMEM;
|
||||
goto free_trips;
|
||||
}
|
||||
|
||||
i = 0;
|
||||
for_each_child_of_node(child, gchild) {
|
||||
ret = thermal_of_populate_bind_params(np, gchild, &tz->tbps[i++]);
|
||||
if (ret) {
|
||||
of_node_put(gchild);
|
||||
goto free_tbps;
|
||||
}
|
||||
}
|
||||
|
||||
finish:
|
||||
of_node_put(child);
|
||||
|
||||
return tz;
|
||||
|
||||
free_tbps:
|
||||
for (i = i - 1; i >= 0; i--) {
|
||||
struct __thermal_bind_params *tbp = tz->tbps + i;
|
||||
int j;
|
||||
|
||||
for (j = 0; j < tbp->count; j++)
|
||||
of_node_put(tbp->tcbp[j].cooling_device);
|
||||
|
||||
kfree(tbp->tcbp);
|
||||
}
|
||||
|
||||
kfree(tz->tbps);
|
||||
free_trips:
|
||||
kfree(tz->trips);
|
||||
free_tz:
|
||||
kfree(tz);
|
||||
of_node_put(child);
|
||||
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static void of_thermal_free_zone(struct __thermal_zone *tz)
|
||||
{
|
||||
struct __thermal_bind_params *tbp;
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < tz->num_tbps; i++) {
|
||||
tbp = tz->tbps + i;
|
||||
|
||||
for (j = 0; j < tbp->count; j++)
|
||||
of_node_put(tbp->tcbp[j].cooling_device);
|
||||
|
||||
kfree(tbp->tcbp);
|
||||
}
|
||||
|
||||
kfree(tz->tbps);
|
||||
kfree(tz->trips);
|
||||
kfree(tz);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_thermal_destroy_zones - remove all zones parsed and allocated resources
|
||||
*
|
||||
* Finds all zones parsed and added to the thermal framework and remove them
|
||||
* from the system, together with their resources.
|
||||
*
|
||||
*/
|
||||
static __init void of_thermal_destroy_zones(void)
|
||||
{
|
||||
struct device_node *np, *child;
|
||||
|
||||
np = of_find_node_by_name(NULL, "thermal-zones");
|
||||
if (!np) {
|
||||
pr_debug("unable to find thermal zones\n");
|
||||
return;
|
||||
}
|
||||
|
||||
for_each_available_child_of_node(np, child) {
|
||||
struct thermal_zone_device *zone;
|
||||
|
||||
zone = thermal_zone_get_zone_by_name(child->name);
|
||||
if (IS_ERR(zone))
|
||||
continue;
|
||||
|
||||
thermal_zone_device_unregister(zone);
|
||||
kfree(zone->tzp);
|
||||
kfree(zone->ops);
|
||||
of_thermal_free_zone(zone->devdata);
|
||||
}
|
||||
of_node_put(np);
|
||||
}
|
||||
|
||||
static struct device_node *of_thermal_zone_find(struct device_node *sensor, int id)
|
||||
{
|
||||
struct device_node *np, *tz;
|
||||
|
|
@ -1492,95 +772,7 @@ EXPORT_SYMBOL_GPL(devm_thermal_of_zone_register);
|
|||
*/
|
||||
void devm_thermal_of_zone_unregister(struct device *dev, struct thermal_zone_device *tz)
|
||||
{
|
||||
WARN_ON(devres_release(dev, devm_thermal_zone_of_sensor_release,
|
||||
WARN_ON(devres_release(dev, devm_thermal_of_zone_release,
|
||||
devm_thermal_of_zone_match, tz));
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_thermal_of_zone_unregister);
|
||||
|
||||
/**
|
||||
* of_parse_thermal_zones - parse device tree thermal data
|
||||
*
|
||||
* Initialization function that can be called by machine initialization
|
||||
* code to parse thermal data and populate the thermal framework
|
||||
* with hardware thermal zones info. This function only parses thermal zones.
|
||||
* Cooling devices and sensor devices nodes are supposed to be parsed
|
||||
* by their respective drivers.
|
||||
*
|
||||
* Return: 0 on success, proper error code otherwise
|
||||
*
|
||||
*/
|
||||
int of_parse_thermal_zones(void)
|
||||
{
|
||||
struct device_node *np, *child;
|
||||
struct __thermal_zone *tz;
|
||||
struct thermal_zone_device_ops *ops;
|
||||
|
||||
np = of_find_node_by_name(NULL, "thermal-zones");
|
||||
if (!np) {
|
||||
pr_debug("unable to find thermal zones\n");
|
||||
return 0; /* Run successfully on systems without thermal DT */
|
||||
}
|
||||
|
||||
for_each_available_child_of_node(np, child) {
|
||||
struct thermal_zone_device *zone;
|
||||
struct thermal_zone_params *tzp;
|
||||
int i, mask = 0;
|
||||
u32 prop;
|
||||
|
||||
tz = thermal_of_build_thermal_zone(child);
|
||||
if (IS_ERR(tz)) {
|
||||
pr_err("failed to build thermal zone %pOFn: %ld\n",
|
||||
child,
|
||||
PTR_ERR(tz));
|
||||
continue;
|
||||
}
|
||||
|
||||
ops = kmemdup(&of_thermal_ops, sizeof(*ops), GFP_KERNEL);
|
||||
if (!ops)
|
||||
goto exit_free;
|
||||
|
||||
tzp = kzalloc(sizeof(*tzp), GFP_KERNEL);
|
||||
if (!tzp) {
|
||||
kfree(ops);
|
||||
goto exit_free;
|
||||
}
|
||||
|
||||
/* No hwmon because there might be hwmon drivers registering */
|
||||
tzp->no_hwmon = true;
|
||||
|
||||
if (!of_property_read_u32(child, "sustainable-power", &prop))
|
||||
tzp->sustainable_power = prop;
|
||||
|
||||
for (i = 0; i < tz->ntrips; i++)
|
||||
mask |= 1 << i;
|
||||
|
||||
/* these two are left for temperature drivers to use */
|
||||
tzp->slope = tz->slope;
|
||||
tzp->offset = tz->offset;
|
||||
|
||||
zone = thermal_zone_device_register_with_trips(child->name, tz->trips, tz->ntrips,
|
||||
mask, tz, ops, tzp, tz->passive_delay,
|
||||
tz->polling_delay);
|
||||
if (IS_ERR(zone)) {
|
||||
pr_err("Failed to build %pOFn zone %ld\n", child,
|
||||
PTR_ERR(zone));
|
||||
kfree(tzp);
|
||||
kfree(ops);
|
||||
of_thermal_free_zone(tz);
|
||||
/* attempting to build remaining zones still */
|
||||
}
|
||||
}
|
||||
of_node_put(np);
|
||||
|
||||
return 0;
|
||||
|
||||
exit_free:
|
||||
of_node_put(child);
|
||||
of_node_put(np);
|
||||
of_thermal_free_zone(tz);
|
||||
|
||||
/* no memory available, so free what we have built */
|
||||
of_thermal_destroy_zones();
|
||||
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -296,33 +296,6 @@ struct thermal_zone_params {
|
|||
int offset;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct thermal_zone_of_device_ops - callbacks for handling DT based zones
|
||||
*
|
||||
* Mandatory:
|
||||
* @get_temp: a pointer to a function that reads the sensor temperature.
|
||||
*
|
||||
* Optional:
|
||||
* @get_trend: a pointer to a function that reads the sensor temperature trend.
|
||||
* @set_trips: a pointer to a function that sets a temperature window. When
|
||||
* this window is left the driver must inform the thermal core via
|
||||
* thermal_zone_device_update.
|
||||
* @set_emul_temp: a pointer to a function that sets sensor emulated
|
||||
* temperature.
|
||||
* @set_trip_temp: a pointer to a function that sets the trip temperature on
|
||||
* hardware.
|
||||
* @change_mode: a pointer to a function that notifies the thermal zone
|
||||
* mode change.
|
||||
*/
|
||||
struct thermal_zone_of_device_ops {
|
||||
int (*get_temp)(void *, int *);
|
||||
int (*get_trend)(void *, int, enum thermal_trend *);
|
||||
int (*set_trips)(void *, int, int);
|
||||
int (*set_emul_temp)(void *, int);
|
||||
int (*set_trip_temp)(void *, int, int);
|
||||
int (*change_mode) (void *, enum thermal_device_mode);
|
||||
};
|
||||
|
||||
/* Function declarations */
|
||||
#ifdef CONFIG_THERMAL_OF
|
||||
struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor, int id, void *data,
|
||||
|
|
@ -335,61 +308,41 @@ void thermal_of_zone_unregister(struct thermal_zone_device *tz);
|
|||
|
||||
void devm_thermal_of_zone_unregister(struct device *dev, struct thermal_zone_device *tz);
|
||||
|
||||
void thermal_of_zone_unregister(struct thermal_zone_device *tz);
|
||||
|
||||
int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
|
||||
struct device_node *sensor_np,
|
||||
u32 *id);
|
||||
struct thermal_zone_device *
|
||||
thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
|
||||
const struct thermal_zone_of_device_ops *ops);
|
||||
void thermal_zone_of_sensor_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tz);
|
||||
struct thermal_zone_device *devm_thermal_zone_of_sensor_register(
|
||||
struct device *dev, int id, void *data,
|
||||
const struct thermal_zone_of_device_ops *ops);
|
||||
void devm_thermal_zone_of_sensor_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tz);
|
||||
#else
|
||||
|
||||
static inline int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
|
||||
struct device_node *sensor_np,
|
||||
u32 *id)
|
||||
static inline
|
||||
struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor, int id, void *data,
|
||||
const struct thermal_zone_device_ops *ops)
|
||||
{
|
||||
return -ENOENT;
|
||||
}
|
||||
static inline struct thermal_zone_device *
|
||||
thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
|
||||
const struct thermal_zone_of_device_ops *ops)
|
||||
{
|
||||
return ERR_PTR(-ENODEV);
|
||||
return ERR_PTR(-ENOTSUPP);
|
||||
}
|
||||
|
||||
static inline
|
||||
void thermal_zone_of_sensor_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tz)
|
||||
struct thermal_zone_device *devm_thermal_of_zone_register(struct device *dev, int id, void *data,
|
||||
const struct thermal_zone_device_ops *ops)
|
||||
{
|
||||
}
|
||||
|
||||
static inline struct thermal_zone_device *devm_thermal_zone_of_sensor_register(
|
||||
struct device *dev, int id, void *data,
|
||||
const struct thermal_zone_of_device_ops *ops)
|
||||
{
|
||||
return ERR_PTR(-ENODEV);
|
||||
return ERR_PTR(-ENOTSUPP);
|
||||
}
|
||||
|
||||
static inline void thermal_of_zone_unregister(struct thermal_zone_device *tz)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void devm_thermal_of_zone_unregister(struct device *dev, struct thermal_zone_device *tz)
|
||||
static inline void devm_thermal_of_zone_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tz)
|
||||
{
|
||||
}
|
||||
|
||||
static inline
|
||||
void devm_thermal_zone_of_sensor_unregister(struct device *dev,
|
||||
struct thermal_zone_device *tz)
|
||||
static inline int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
|
||||
struct device_node *sensor_np,
|
||||
u32 *id)
|
||||
{
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_THERMAL
|
||||
|
|
|
|||
Loading…
Reference in New Issue