forked from Minki/linux
thermal: exynos: Remove exynos_thermal_common.[c|h] files
After defining all necessary Exynos data in the device tree and heavy reusage of the of-thermal.c those files can be removed. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Lukasz Majewski
Eduardo Valentin
parent
3b6a1a805f
commit
1fd2273f96
@ -1,445 +0,0 @@
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/*
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* exynos_thermal_common.c - Samsung EXYNOS common thermal file
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*
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* Copyright (C) 2013 Samsung Electronics
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* Amit Daniel Kachhap <amit.daniel@samsung.com>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/cpu_cooling.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/thermal.h>
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#include "exynos_thermal_common.h"
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struct exynos_thermal_zone {
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enum thermal_device_mode mode;
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struct thermal_zone_device *therm_dev;
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struct thermal_cooling_device *cool_dev[MAX_COOLING_DEVICE];
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unsigned int cool_dev_size;
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struct platform_device *exynos4_dev;
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struct thermal_sensor_conf *sensor_conf;
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bool bind;
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};
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/* Get mode callback functions for thermal zone */
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static int exynos_get_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode *mode)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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if (th_zone)
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*mode = th_zone->mode;
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return 0;
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}
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/* Set mode callback functions for thermal zone */
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static int exynos_set_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode mode)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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if (!th_zone) {
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dev_err(&thermal->device,
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"thermal zone not registered\n");
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return 0;
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}
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mutex_lock(&thermal->lock);
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if (mode == THERMAL_DEVICE_ENABLED &&
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!th_zone->sensor_conf->trip_data.trigger_falling)
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thermal->polling_delay = IDLE_INTERVAL;
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else
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thermal->polling_delay = 0;
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mutex_unlock(&thermal->lock);
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th_zone->mode = mode;
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thermal_zone_device_update(thermal);
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dev_dbg(th_zone->sensor_conf->dev,
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"thermal polling set for duration=%d msec\n",
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thermal->polling_delay);
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return 0;
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}
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/* Get trip type callback functions for thermal zone */
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static int exynos_get_trip_type(struct thermal_zone_device *thermal, int trip,
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enum thermal_trip_type *type)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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int max_trip = th_zone->sensor_conf->trip_data.trip_count;
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int trip_type;
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if (trip < 0 || trip >= max_trip)
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return -EINVAL;
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trip_type = th_zone->sensor_conf->trip_data.trip_type[trip];
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if (trip_type == SW_TRIP)
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*type = THERMAL_TRIP_CRITICAL;
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else if (trip_type == THROTTLE_ACTIVE)
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*type = THERMAL_TRIP_ACTIVE;
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else if (trip_type == THROTTLE_PASSIVE)
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*type = THERMAL_TRIP_PASSIVE;
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else
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return -EINVAL;
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return 0;
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}
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/* Get trip temperature callback functions for thermal zone */
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static int exynos_get_trip_temp(struct thermal_zone_device *thermal, int trip,
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unsigned long *temp)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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int max_trip = th_zone->sensor_conf->trip_data.trip_count;
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if (trip < 0 || trip >= max_trip)
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return -EINVAL;
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*temp = th_zone->sensor_conf->trip_data.trip_val[trip];
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/* convert the temperature into millicelsius */
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*temp = *temp * MCELSIUS;
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return 0;
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}
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/* Get critical temperature callback functions for thermal zone */
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static int exynos_get_crit_temp(struct thermal_zone_device *thermal,
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unsigned long *temp)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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int max_trip = th_zone->sensor_conf->trip_data.trip_count;
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/* Get the temp of highest trip*/
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return exynos_get_trip_temp(thermal, max_trip - 1, temp);
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}
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/* Bind callback functions for thermal zone */
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static int exynos_bind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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struct thermal_sensor_conf *data = th_zone->sensor_conf;
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struct device_node *child, *gchild, *np;
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struct of_phandle_args cooling_spec;
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unsigned long max, state = 0;
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int ret = 0, i = 0;
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/*
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* Below code is necessary to skip binding when cpufreq's
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* frequency table is not yet initialized.
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*/
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cdev->ops->get_max_state(cdev, &state);
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if (!state && !th_zone->cool_dev_size) {
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th_zone->cool_dev_size = 1;
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th_zone->cool_dev[0] = cdev;
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th_zone->bind = false;
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return 0;
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}
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np = of_find_node_by_path("/thermal-zones/cpu-thermal");
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if (!np) {
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pr_err("failed to find thmerla-zones/cpu-thermal node\n");
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return -ENOENT;
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}
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child = of_get_child_by_name(np, "cooling-maps");
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for_each_child_of_node(child, gchild) {
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ret = of_parse_phandle_with_args(gchild, "cooling-device",
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"#cooling-cells",
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0, &cooling_spec);
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if (ret < 0) {
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pr_err("missing cooling_device property\n");
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goto end;
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}
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if (cooling_spec.args_count < 2) {
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ret = -EINVAL;
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goto end;
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}
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max = cooling_spec.args[0];
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if (thermal_zone_bind_cooling_device(thermal, i, cdev,
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max, 0)) {
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dev_err(data->dev,
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"thermal error unbinding cdev inst=%d\n", i);
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ret = -EINVAL;
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goto end;
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}
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i++;
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}
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th_zone->bind = true;
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end:
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of_node_put(child);
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of_node_put(np);
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return ret;
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}
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/* Unbind callback functions for thermal zone */
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static int exynos_unbind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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int ret = 0, i;
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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struct thermal_sensor_conf *data = th_zone->sensor_conf;
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struct device_node *child, *gchild, *np;
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if (th_zone->bind == false || !th_zone->cool_dev_size)
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return 0;
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/* find the cooling device registered*/
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for (i = 0; i < th_zone->cool_dev_size; i++)
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if (cdev == th_zone->cool_dev[i])
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break;
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/* No matching cooling device */
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if (i == th_zone->cool_dev_size)
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return 0;
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np = of_find_node_by_path("/thermal-zones/cpu-thermal");
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if (!np) {
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pr_err("failed to find thmerla-zones/cpu-thermal node\n");
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return -ENOENT;
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}
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child = of_get_child_by_name(np, "cooling-maps");
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i = 0;
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for_each_child_of_node(child, gchild) {
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if (thermal_zone_unbind_cooling_device(thermal, i,
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cdev)) {
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dev_err(data->dev,
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"error unbinding cdev inst=%d\n", i);
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ret = -EINVAL;
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goto end;
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}
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i++;
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}
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th_zone->bind = false;
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end:
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of_node_put(child);
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of_node_put(np);
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return ret;
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}
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/* Get temperature callback functions for thermal zone */
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static int exynos_get_temp(struct thermal_zone_device *thermal,
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unsigned long *temp)
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{
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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void *data;
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if (!th_zone->sensor_conf) {
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dev_err(&thermal->device,
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"Temperature sensor not initialised\n");
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return -EINVAL;
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}
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data = th_zone->sensor_conf->driver_data;
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*temp = th_zone->sensor_conf->read_temperature(data);
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/* convert the temperature into millicelsius */
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*temp = *temp * MCELSIUS;
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return 0;
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}
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/* Get temperature callback functions for thermal zone */
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static int exynos_set_emul_temp(struct thermal_zone_device *thermal,
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unsigned long temp)
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{
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void *data;
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int ret = -EINVAL;
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struct exynos_thermal_zone *th_zone = thermal->devdata;
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if (!th_zone->sensor_conf) {
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dev_err(&thermal->device,
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"Temperature sensor not initialised\n");
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return -EINVAL;
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}
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data = th_zone->sensor_conf->driver_data;
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if (th_zone->sensor_conf->write_emul_temp)
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ret = th_zone->sensor_conf->write_emul_temp(data, temp);
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return ret;
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}
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/* Get the temperature trend */
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static int exynos_get_trend(struct thermal_zone_device *thermal,
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int trip, enum thermal_trend *trend)
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{
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int ret;
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unsigned long trip_temp;
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ret = exynos_get_trip_temp(thermal, trip, &trip_temp);
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if (ret < 0)
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return ret;
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if (thermal->temperature >= trip_temp)
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*trend = THERMAL_TREND_RAISE_FULL;
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else
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*trend = THERMAL_TREND_DROP_FULL;
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return 0;
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}
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/* Operation callback functions for thermal zone */
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static struct thermal_zone_device_ops exynos_dev_ops = {
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.bind = exynos_bind,
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.unbind = exynos_unbind,
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.get_temp = exynos_get_temp,
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.set_emul_temp = exynos_set_emul_temp,
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.get_trend = exynos_get_trend,
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.get_mode = exynos_get_mode,
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.set_mode = exynos_set_mode,
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.get_trip_type = exynos_get_trip_type,
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.get_trip_temp = exynos_get_trip_temp,
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.get_crit_temp = exynos_get_crit_temp,
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};
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/*
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* This function may be called from interrupt based temperature sensor
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* when threshold is changed.
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*/
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void exynos_report_trigger(struct thermal_sensor_conf *conf)
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{
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unsigned int i;
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char data[10];
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char *envp[] = { data, NULL };
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struct exynos_thermal_zone *th_zone;
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if (!conf || !conf->pzone_data) {
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pr_err("Invalid temperature sensor configuration data\n");
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return;
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}
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th_zone = conf->pzone_data;
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if (th_zone->bind == false) {
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for (i = 0; i < th_zone->cool_dev_size; i++) {
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if (!th_zone->cool_dev[i])
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continue;
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exynos_bind(th_zone->therm_dev,
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th_zone->cool_dev[i]);
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}
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}
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thermal_zone_device_update(th_zone->therm_dev);
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mutex_lock(&th_zone->therm_dev->lock);
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/* Find the level for which trip happened */
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for (i = 0; i < th_zone->sensor_conf->trip_data.trip_count; i++) {
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if (th_zone->therm_dev->last_temperature <
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th_zone->sensor_conf->trip_data.trip_val[i] * MCELSIUS)
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break;
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}
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if (th_zone->mode == THERMAL_DEVICE_ENABLED &&
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!th_zone->sensor_conf->trip_data.trigger_falling) {
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if (i > 0)
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th_zone->therm_dev->polling_delay = ACTIVE_INTERVAL;
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else
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th_zone->therm_dev->polling_delay = IDLE_INTERVAL;
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}
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snprintf(data, sizeof(data), "%u", i);
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kobject_uevent_env(&th_zone->therm_dev->device.kobj, KOBJ_CHANGE, envp);
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mutex_unlock(&th_zone->therm_dev->lock);
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}
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/* Register with the in-kernel thermal management */
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int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf)
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{
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int ret;
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struct exynos_thermal_zone *th_zone;
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if (!sensor_conf || !sensor_conf->read_temperature) {
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pr_err("Temperature sensor not initialised\n");
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return -EINVAL;
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}
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th_zone = devm_kzalloc(sensor_conf->dev,
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sizeof(struct exynos_thermal_zone), GFP_KERNEL);
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if (!th_zone)
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return -ENOMEM;
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th_zone->sensor_conf = sensor_conf;
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/*
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* TODO: 1) Handle multiple cooling devices in a thermal zone
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* 2) Add a flag/name in cooling info to map to specific
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* sensor
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*/
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if (sensor_conf->cooling_data.freq_clip_count > 0) {
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th_zone->cool_dev[th_zone->cool_dev_size] =
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cpufreq_cooling_register(cpu_present_mask);
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if (IS_ERR(th_zone->cool_dev[th_zone->cool_dev_size])) {
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ret = PTR_ERR(th_zone->cool_dev[th_zone->cool_dev_size]);
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if (ret != -EPROBE_DEFER)
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dev_err(sensor_conf->dev,
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"Failed to register cpufreq cooling device: %d\n",
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ret);
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goto err_unregister;
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}
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th_zone->cool_dev_size++;
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}
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th_zone->therm_dev = thermal_zone_device_register(
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sensor_conf->name, sensor_conf->trip_data.trip_count,
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0, th_zone, &exynos_dev_ops, NULL, 0,
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sensor_conf->trip_data.trigger_falling ? 0 :
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IDLE_INTERVAL);
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if (IS_ERR(th_zone->therm_dev)) {
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dev_err(sensor_conf->dev,
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"Failed to register thermal zone device\n");
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ret = PTR_ERR(th_zone->therm_dev);
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goto err_unregister;
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}
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th_zone->mode = THERMAL_DEVICE_ENABLED;
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sensor_conf->pzone_data = th_zone;
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dev_info(sensor_conf->dev,
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"Exynos: Thermal zone(%s) registered\n", sensor_conf->name);
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return 0;
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err_unregister:
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exynos_unregister_thermal(sensor_conf);
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return ret;
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}
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/* Un-Register with the in-kernel thermal management */
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void exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf)
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{
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int i;
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struct exynos_thermal_zone *th_zone;
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if (!sensor_conf || !sensor_conf->pzone_data) {
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pr_err("Invalid temperature sensor configuration data\n");
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return;
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}
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th_zone = sensor_conf->pzone_data;
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thermal_zone_device_unregister(th_zone->therm_dev);
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for (i = 0; i < th_zone->cool_dev_size; ++i)
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cpufreq_cooling_unregister(th_zone->cool_dev[i]);
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dev_info(sensor_conf->dev,
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"Exynos: Kernel Thermal management unregistered\n");
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}
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@ -1,106 +0,0 @@
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/*
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* exynos_thermal_common.h - Samsung EXYNOS common header file
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*
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* Copyright (C) 2013 Samsung Electronics
|
||||
* Amit Daniel Kachhap <amit.daniel@samsung.com>
|
||||
*
|
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* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
*/
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||||
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#ifndef _EXYNOS_THERMAL_COMMON_H
|
||||
#define _EXYNOS_THERMAL_COMMON_H
|
||||
|
||||
/* In-kernel thermal framework related macros & definations */
|
||||
#define SENSOR_NAME_LEN 16
|
||||
#define MAX_TRIP_COUNT 8
|
||||
#define MAX_COOLING_DEVICE 4
|
||||
|
||||
#define ACTIVE_INTERVAL 500
|
||||
#define IDLE_INTERVAL 10000
|
||||
#define MCELSIUS 1000
|
||||
|
||||
/* CPU Zone information */
|
||||
#define PANIC_ZONE 4
|
||||
#define WARN_ZONE 3
|
||||
#define MONITOR_ZONE 2
|
||||
#define SAFE_ZONE 1
|
||||
|
||||
#define GET_ZONE(trip) (trip + 2)
|
||||
#define GET_TRIP(zone) (zone - 2)
|
||||
|
||||
enum trigger_type {
|
||||
THROTTLE_ACTIVE = 1,
|
||||
THROTTLE_PASSIVE,
|
||||
SW_TRIP,
|
||||
HW_TRIP,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct freq_clip_table
|
||||
* @freq_clip_max: maximum frequency allowed for this cooling state.
|
||||
* @temp_level: Temperature level at which the temperature clipping will
|
||||
* happen.
|
||||
* @mask_val: cpumask of the allowed cpu's where the clipping will take place.
|
||||
*
|
||||
* This structure is required to be filled and passed to the
|
||||
* cpufreq_cooling_unregister function.
|
||||
*/
|
||||
struct freq_clip_table {
|
||||
unsigned int freq_clip_max;
|
||||
unsigned int temp_level;
|
||||
const struct cpumask *mask_val;
|
||||
};
|
||||
|
||||
struct thermal_trip_point_conf {
|
||||
int trip_val[MAX_TRIP_COUNT];
|
||||
int trip_type[MAX_TRIP_COUNT];
|
||||
int trip_count;
|
||||
unsigned char trigger_falling;
|
||||
};
|
||||
|
||||
struct thermal_cooling_conf {
|
||||
struct freq_clip_table freq_data[MAX_TRIP_COUNT];
|
||||
int freq_clip_count;
|
||||
};
|
||||
|
||||
struct thermal_sensor_conf {
|
||||
char name[SENSOR_NAME_LEN];
|
||||
int (*read_temperature)(void *data);
|
||||
int (*write_emul_temp)(void *drv_data, unsigned long temp);
|
||||
struct thermal_trip_point_conf trip_data;
|
||||
struct thermal_cooling_conf cooling_data;
|
||||
void *driver_data;
|
||||
void *pzone_data;
|
||||
struct device *dev;
|
||||
};
|
||||
|
||||
/*Functions used exynos based thermal sensor driver*/
|
||||
#ifdef CONFIG_EXYNOS_THERMAL_CORE
|
||||
void exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf);
|
||||
int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf);
|
||||
void exynos_report_trigger(struct thermal_sensor_conf *sensor_conf);
|
||||
#else
|
||||
static inline void
|
||||
exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf) { return; }
|
||||
|
||||
static inline int
|
||||
exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) { return 0; }
|
||||
|
||||
static inline void
|
||||
exynos_report_trigger(struct thermal_sensor_conf *sensor_conf) { return; }
|
||||
|
||||
#endif /* CONFIG_EXYNOS_THERMAL_CORE */
|
||||
#endif /* _EXYNOS_THERMAL_COMMON_H */
|
||||
Loading…
Reference in New Issue
Block a user