[deliverable/linux.git] / drivers / thermal / ti-soc-thermal / ti-thermal-common.c

/*
 * OMAP thermal driver interface
 *
 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
 * Contact:
 *   Eduardo Valentin <eduardo.valentin@ti.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 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., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/device.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/workqueue.h>
#include <linux/thermal.h>
#include <linux/cpufreq.h>
#include <linux/cpumask.h>
#include <linux/cpu_cooling.h>

#include "ti-thermal.h"
#include "ti-bandgap.h"

/* common data structures */
struct ti_thermal_data {
	struct thermal_zone_device *ti_thermal;
	struct thermal_zone_device *pcb_tz;
	struct thermal_cooling_device *cool_dev;
	struct ti_bandgap *bgp;
	enum thermal_device_mode mode;
	struct work_struct thermal_wq;
	int sensor_id;
};

static void ti_thermal_work(struct work_struct *work)
{
	struct ti_thermal_data *data = container_of(work,
					struct ti_thermal_data, thermal_wq);

	thermal_zone_device_update(data->ti_thermal);

	dev_dbg(&data->ti_thermal->device, "updated thermal zone %s\n",
		data->ti_thermal->type);
}

/**
 * ti_thermal_hotspot_temperature - returns sensor extrapolated temperature
 * @t:	omap sensor temperature
 * @s:	omap sensor slope value
 * @c:	omap sensor const value
 */
static inline int ti_thermal_hotspot_temperature(int t, int s, int c)
{
	int delta = t * s / 1000 + c;

	if (delta < 0)
		delta = 0;

	return t + delta;
}

/* thermal zone ops */
/* Get temperature callback function for thermal zone*/
static inline int ti_thermal_get_temp(struct thermal_zone_device *thermal,
				      unsigned long *temp)
{
	struct thermal_zone_device *pcb_tz = NULL;
	struct ti_thermal_data *data = thermal->devdata;
	struct ti_bandgap *bgp;
	const struct ti_temp_sensor *s;
	int ret, tmp, slope, constant;
	unsigned long pcb_temp;

	if (!data)
		return 0;

	bgp = data->bgp;
	s = &bgp->conf->sensors[data->sensor_id];

	ret = ti_bandgap_read_temperature(bgp, data->sensor_id, &tmp);
	if (ret)
		return ret;

	/* Default constants */
	slope = s->slope;
	constant = s->constant;

	pcb_tz = data->pcb_tz;
	/* In case pcb zone is available, use the extrapolation rule with it */
	if (!IS_ERR(pcb_tz)) {
		ret = thermal_zone_get_temp(pcb_tz, &pcb_temp);
		if (!ret) {
			tmp -= pcb_temp; /* got a valid PCB temp */
			slope = s->slope_pcb;
			constant = s->constant_pcb;
		} else {
			dev_err(bgp->dev,
				"Failed to read PCB state. Using defaults\n");
		}
	}
	*temp = ti_thermal_hotspot_temperature(tmp, slope, constant);

	return ret;
}

/* Bind callback functions for thermal zone */
static int ti_thermal_bind(struct thermal_zone_device *thermal,
			   struct thermal_cooling_device *cdev)
{
	struct ti_thermal_data *data = thermal->devdata;
	int id;

	if (!data || IS_ERR(data))
		return -ENODEV;

	/* check if this is the cooling device we registered */
	if (data->cool_dev != cdev)
		return 0;

	id = data->sensor_id;

	/* Simple thing, two trips, one passive another critical */
	return thermal_zone_bind_cooling_device(thermal, 0, cdev,
	/* bind with min and max states defined by cpu_cooling */
						THERMAL_NO_LIMIT,
						THERMAL_NO_LIMIT);
}

/* Unbind callback functions for thermal zone */
static int ti_thermal_unbind(struct thermal_zone_device *thermal,
			     struct thermal_cooling_device *cdev)
{
	struct ti_thermal_data *data = thermal->devdata;

	if (!data || IS_ERR(data))
		return -ENODEV;

	/* check if this is the cooling device we registered */
	if (data->cool_dev != cdev)
		return 0;

	/* Simple thing, two trips, one passive another critical */
	return thermal_zone_unbind_cooling_device(thermal, 0, cdev);
}

/* Get mode callback functions for thermal zone */
static int ti_thermal_get_mode(struct thermal_zone_device *thermal,
			       enum thermal_device_mode *mode)
{
	struct ti_thermal_data *data = thermal->devdata;

	if (data)
		*mode = data->mode;

	return 0;
}

/* Set mode callback functions for thermal zone */
static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
			       enum thermal_device_mode mode)
{
	struct ti_thermal_data *data = thermal->devdata;

	if (!data->ti_thermal) {
		dev_notice(&thermal->device, "thermal zone not registered\n");
		return 0;
	}

	mutex_lock(&data->ti_thermal->lock);

	if (mode == THERMAL_DEVICE_ENABLED)
		data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
	else
		data->ti_thermal->polling_delay = 0;

	mutex_unlock(&data->ti_thermal->lock);

	data->mode = mode;
	thermal_zone_device_update(data->ti_thermal);
	dev_dbg(&thermal->device, "thermal polling set for duration=%d msec\n",
		data->ti_thermal->polling_delay);

	return 0;
}

/* Get trip type callback functions for thermal zone */
static int ti_thermal_get_trip_type(struct thermal_zone_device *thermal,
				    int trip, enum thermal_trip_type *type)
{
	if (!ti_thermal_is_valid_trip(trip))
		return -EINVAL;

	if (trip + 1 == OMAP_TRIP_NUMBER)
		*type = THERMAL_TRIP_CRITICAL;
	else
		*type = THERMAL_TRIP_PASSIVE;

	return 0;
}

/* Get trip temperature callback functions for thermal zone */
static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
				    int trip, unsigned long *temp)
{
	if (!ti_thermal_is_valid_trip(trip))
		return -EINVAL;

	*temp = ti_thermal_get_trip_value(trip);

	return 0;
}

/* Get the temperature trend callback functions for thermal zone */
static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
				int trip, enum thermal_trend *trend)
{
	struct ti_thermal_data *data = thermal->devdata;
	struct ti_bandgap *bgp;
	int id, tr, ret = 0;

	bgp = data->bgp;
	id = data->sensor_id;

	ret = ti_bandgap_get_trend(bgp, id, &tr);
	if (ret)
		return ret;

	if (tr > 0)
		*trend = THERMAL_TREND_RAISING;
	else if (tr < 0)
		*trend = THERMAL_TREND_DROPPING;
	else
		*trend = THERMAL_TREND_STABLE;

	return 0;
}

/* Get critical temperature callback functions for thermal zone */
static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
				    unsigned long *temp)
{
	/* shutdown zone */
	return ti_thermal_get_trip_temp(thermal, OMAP_TRIP_NUMBER - 1, temp);
}

static struct thermal_zone_device_ops ti_thermal_ops = {
	.get_temp = ti_thermal_get_temp,
	.get_trend = ti_thermal_get_trend,
	.bind = ti_thermal_bind,
	.unbind = ti_thermal_unbind,
	.get_mode = ti_thermal_get_mode,
	.set_mode = ti_thermal_set_mode,
	.get_trip_type = ti_thermal_get_trip_type,
	.get_trip_temp = ti_thermal_get_trip_temp,
	.get_crit_temp = ti_thermal_get_crit_temp,
};

static struct ti_thermal_data
*ti_thermal_build_data(struct ti_bandgap *bgp, int id)
{
	struct ti_thermal_data *data;

	data = devm_kzalloc(bgp->dev, sizeof(*data), GFP_KERNEL);
	if (!data) {
		dev_err(bgp->dev, "kzalloc fail\n");
		return NULL;
	}
	data->sensor_id = id;
	data->bgp = bgp;
	data->mode = THERMAL_DEVICE_ENABLED;
	/* pcb_tz will be either valid or PTR_ERR() */
	data->pcb_tz = thermal_zone_get_zone_by_name("pcb");
	INIT_WORK(&data->thermal_wq, ti_thermal_work);

	return data;
}

int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
			     char *domain)
{
	struct ti_thermal_data *data;

	data = ti_bandgap_get_sensor_data(bgp, id);

	if (!data || IS_ERR(data))
		data = ti_thermal_build_data(bgp, id);

	if (!data)
		return -EINVAL;

	/* Create thermal zone */
	data->ti_thermal = thermal_zone_device_register(domain,
				OMAP_TRIP_NUMBER, 0, data, &ti_thermal_ops,
				NULL, FAST_TEMP_MONITORING_RATE,
				FAST_TEMP_MONITORING_RATE);
	if (IS_ERR(data->ti_thermal)) {
		dev_err(bgp->dev, "thermal zone device is NULL\n");
		return PTR_ERR(data->ti_thermal);
	}
	data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
	ti_bandgap_set_sensor_data(bgp, id, data);

	return 0;
}

int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
{
	struct ti_thermal_data *data;

	data = ti_bandgap_get_sensor_data(bgp, id);

	thermal_zone_device_unregister(data->ti_thermal);

	return 0;
}

int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
{
	struct ti_thermal_data *data;

	data = ti_bandgap_get_sensor_data(bgp, id);

	schedule_work(&data->thermal_wq);

	return 0;
}

int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
{
	struct ti_thermal_data *data;

	data = ti_bandgap_get_sensor_data(bgp, id);
	if (!data || IS_ERR(data))
		data = ti_thermal_build_data(bgp, id);

	if (!data)
		return -EINVAL;

	if (!cpufreq_get_current_driver()) {
		dev_dbg(bgp->dev, "no cpufreq driver yet\n");
		return -EPROBE_DEFER;
	}

	/* Register cooling device */
	data->cool_dev = cpufreq_cooling_register(cpu_present_mask);
	if (IS_ERR(data->cool_dev)) {
		dev_err(bgp->dev,
			"Failed to register cpufreq cooling device\n");
		return PTR_ERR(data->cool_dev);
	}
	ti_bandgap_set_sensor_data(bgp, id, data);

	return 0;
}

int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
{
	struct ti_thermal_data *data;

	data = ti_bandgap_get_sensor_data(bgp, id);
	cpufreq_cooling_unregister(data->cool_dev);

	return 0;
}
Commit	Line	Data
	1	/*
	2	* OMAP thermal driver interface
	3	*
	4	* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
	5	* Contact:
	6	* Eduardo Valentin <eduardo.valentin@ti.com>
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*
	22	*/
	23
	24	#include <linux/device.h>
	25	#include <linux/err.h>
	26	#include <linux/mutex.h>
	27	#include <linux/gfp.h>
	28	#include <linux/kernel.h>
	29	#include <linux/workqueue.h>
	30	#include <linux/thermal.h>
	31	#include <linux/cpufreq.h>
	32	#include <linux/cpumask.h>
	33	#include <linux/cpu_cooling.h>
	34
	35	#include "ti-thermal.h"
	36	#include "ti-bandgap.h"
	37
	38	/* common data structures */
	39	struct ti_thermal_data {
	40	struct thermal_zone_device *ti_thermal;
	41	struct thermal_zone_device *pcb_tz;
	42	struct thermal_cooling_device *cool_dev;
	43	struct ti_bandgap *bgp;
	44	enum thermal_device_mode mode;
	45	struct work_struct thermal_wq;
	46	int sensor_id;
	47	};
	48
	49	static void ti_thermal_work(struct work_struct *work)
	50	{
	51	struct ti_thermal_data *data = container_of(work,
	52	struct ti_thermal_data, thermal_wq);
	53
	54	thermal_zone_device_update(data->ti_thermal);
	55
	56	dev_dbg(&data->ti_thermal->device, "updated thermal zone %s\n",
	57	data->ti_thermal->type);
	58	}
	59
	60	/**
	61	* ti_thermal_hotspot_temperature - returns sensor extrapolated temperature
	62	* @t: omap sensor temperature
	63	* @s: omap sensor slope value
	64	* @c: omap sensor const value
	65	*/
	66	static inline int ti_thermal_hotspot_temperature(int t, int s, int c)
	67	{
	68	int delta = t * s / 1000 + c;
	69
	70	if (delta < 0)
	71	delta = 0;
	72
	73	return t + delta;
	74	}
	75
	76	/* thermal zone ops */
	77	/* Get temperature callback function for thermal zone*/
	78	static inline int ti_thermal_get_temp(struct thermal_zone_device *thermal,
	79	unsigned long *temp)
	80	{
	81	struct thermal_zone_device *pcb_tz = NULL;
	82	struct ti_thermal_data *data = thermal->devdata;
	83	struct ti_bandgap *bgp;
	84	const struct ti_temp_sensor *s;
	85	int ret, tmp, slope, constant;
	86	unsigned long pcb_temp;
	87
	88	if (!data)
	89	return 0;
	90
	91	bgp = data->bgp;
	92	s = &bgp->conf->sensors[data->sensor_id];
	93
	94	ret = ti_bandgap_read_temperature(bgp, data->sensor_id, &tmp);
	95	if (ret)
	96	return ret;
	97
	98	/* Default constants */
	99	slope = s->slope;
	100	constant = s->constant;
	101
	102	pcb_tz = data->pcb_tz;
	103	/* In case pcb zone is available, use the extrapolation rule with it */
	104	if (!IS_ERR(pcb_tz)) {
	105	ret = thermal_zone_get_temp(pcb_tz, &pcb_temp);
	106	if (!ret) {
	107	tmp -= pcb_temp; /* got a valid PCB temp */
	108	slope = s->slope_pcb;
	109	constant = s->constant_pcb;
	110	} else {
	111	dev_err(bgp->dev,
	112	"Failed to read PCB state. Using defaults\n");
	113	}
	114	}
	115	*temp = ti_thermal_hotspot_temperature(tmp, slope, constant);
	116
	117	return ret;
	118	}
	119
	120	/* Bind callback functions for thermal zone */
	121	static int ti_thermal_bind(struct thermal_zone_device *thermal,
	122	struct thermal_cooling_device *cdev)
	123	{
	124	struct ti_thermal_data *data = thermal->devdata;
	125	int id;
	126
	127	if (!data \|\| IS_ERR(data))
	128	return -ENODEV;
	129
	130	/* check if this is the cooling device we registered */
	131	if (data->cool_dev != cdev)
	132	return 0;
	133
	134	id = data->sensor_id;
	135
	136	/* Simple thing, two trips, one passive another critical */
	137	return thermal_zone_bind_cooling_device(thermal, 0, cdev,
	138	/* bind with min and max states defined by cpu_cooling */
	139	THERMAL_NO_LIMIT,
	140	THERMAL_NO_LIMIT);
	141	}
	142
	143	/* Unbind callback functions for thermal zone */
	144	static int ti_thermal_unbind(struct thermal_zone_device *thermal,
	145	struct thermal_cooling_device *cdev)
	146	{
	147	struct ti_thermal_data *data = thermal->devdata;
	148
	149	if (!data \|\| IS_ERR(data))
	150	return -ENODEV;
	151
	152	/* check if this is the cooling device we registered */
	153	if (data->cool_dev != cdev)
	154	return 0;
	155
	156	/* Simple thing, two trips, one passive another critical */
	157	return thermal_zone_unbind_cooling_device(thermal, 0, cdev);
	158	}
	159
	160	/* Get mode callback functions for thermal zone */
	161	static int ti_thermal_get_mode(struct thermal_zone_device *thermal,
	162	enum thermal_device_mode *mode)
	163	{
	164	struct ti_thermal_data *data = thermal->devdata;
	165
	166	if (data)
	167	*mode = data->mode;
	168
	169	return 0;
	170	}
	171
	172	/* Set mode callback functions for thermal zone */
	173	static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
	174	enum thermal_device_mode mode)
	175	{
	176	struct ti_thermal_data *data = thermal->devdata;
	177
	178	if (!data->ti_thermal) {
	179	dev_notice(&thermal->device, "thermal zone not registered\n");
	180	return 0;
	181	}
	182
	183	mutex_lock(&data->ti_thermal->lock);
	184
	185	if (mode == THERMAL_DEVICE_ENABLED)
	186	data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
	187	else
	188	data->ti_thermal->polling_delay = 0;
	189
	190	mutex_unlock(&data->ti_thermal->lock);
	191
	192	data->mode = mode;
	193	thermal_zone_device_update(data->ti_thermal);
	194	dev_dbg(&thermal->device, "thermal polling set for duration=%d msec\n",
	195	data->ti_thermal->polling_delay);
	196
	197	return 0;
	198	}
	199
	200	/* Get trip type callback functions for thermal zone */
	201	static int ti_thermal_get_trip_type(struct thermal_zone_device *thermal,
	202	int trip, enum thermal_trip_type *type)
	203	{
	204	if (!ti_thermal_is_valid_trip(trip))
	205	return -EINVAL;
	206
	207	if (trip + 1 == OMAP_TRIP_NUMBER)
	208	*type = THERMAL_TRIP_CRITICAL;
	209	else
	210	*type = THERMAL_TRIP_PASSIVE;
	211
	212	return 0;
	213	}
	214
	215	/* Get trip temperature callback functions for thermal zone */
	216	static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
	217	int trip, unsigned long *temp)
	218	{
	219	if (!ti_thermal_is_valid_trip(trip))
	220	return -EINVAL;
	221
	222	*temp = ti_thermal_get_trip_value(trip);
	223
	224	return 0;
	225	}
	226
	227	/* Get the temperature trend callback functions for thermal zone */
	228	static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
	229	int trip, enum thermal_trend *trend)
	230	{
	231	struct ti_thermal_data *data = thermal->devdata;
	232	struct ti_bandgap *bgp;
	233	int id, tr, ret = 0;
	234
	235	bgp = data->bgp;
	236	id = data->sensor_id;
	237
	238	ret = ti_bandgap_get_trend(bgp, id, &tr);
	239	if (ret)
	240	return ret;
	241
	242	if (tr > 0)
	243	*trend = THERMAL_TREND_RAISING;
	244	else if (tr < 0)
	245	*trend = THERMAL_TREND_DROPPING;
	246	else
	247	*trend = THERMAL_TREND_STABLE;
	248
	249	return 0;
	250	}
	251
	252	/* Get critical temperature callback functions for thermal zone */
	253	static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
	254	unsigned long *temp)
	255	{
	256	/* shutdown zone */
	257	return ti_thermal_get_trip_temp(thermal, OMAP_TRIP_NUMBER - 1, temp);
	258	}
	259
	260	static struct thermal_zone_device_ops ti_thermal_ops = {
	261	.get_temp = ti_thermal_get_temp,
	262	.get_trend = ti_thermal_get_trend,
	263	.bind = ti_thermal_bind,
	264	.unbind = ti_thermal_unbind,
	265	.get_mode = ti_thermal_get_mode,
	266	.set_mode = ti_thermal_set_mode,
	267	.get_trip_type = ti_thermal_get_trip_type,
	268	.get_trip_temp = ti_thermal_get_trip_temp,
	269	.get_crit_temp = ti_thermal_get_crit_temp,
	270	};
	271
	272	static struct ti_thermal_data
	273	ti_thermal_build_data(struct ti_bandgap bgp, int id)
	274	{
	275	struct ti_thermal_data *data;
	276
	277	data = devm_kzalloc(bgp->dev, sizeof(*data), GFP_KERNEL);
	278	if (!data) {
	279	dev_err(bgp->dev, "kzalloc fail\n");
	280	return NULL;
	281	}
	282	data->sensor_id = id;
	283	data->bgp = bgp;
	284	data->mode = THERMAL_DEVICE_ENABLED;
	285	/* pcb_tz will be either valid or PTR_ERR() */
	286	data->pcb_tz = thermal_zone_get_zone_by_name("pcb");
	287	INIT_WORK(&data->thermal_wq, ti_thermal_work);
	288
	289	return data;
	290	}
	291
	292	int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
	293	char *domain)
	294	{
	295	struct ti_thermal_data *data;
	296
	297	data = ti_bandgap_get_sensor_data(bgp, id);
	298
	299	if (!data \|\| IS_ERR(data))
	300	data = ti_thermal_build_data(bgp, id);
	301
	302	if (!data)
	303	return -EINVAL;
	304
	305	/* Create thermal zone */
	306	data->ti_thermal = thermal_zone_device_register(domain,
	307	OMAP_TRIP_NUMBER, 0, data, &ti_thermal_ops,
	308	NULL, FAST_TEMP_MONITORING_RATE,
	309	FAST_TEMP_MONITORING_RATE);
	310	if (IS_ERR(data->ti_thermal)) {
	311	dev_err(bgp->dev, "thermal zone device is NULL\n");
	312	return PTR_ERR(data->ti_thermal);
	313	}
	314	data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
	315	ti_bandgap_set_sensor_data(bgp, id, data);
	316
	317	return 0;
	318	}
	319
	320	int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
	321	{
	322	struct ti_thermal_data *data;
	323
	324	data = ti_bandgap_get_sensor_data(bgp, id);
	325
	326	thermal_zone_device_unregister(data->ti_thermal);
	327
	328	return 0;
	329	}
	330
	331	int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
	332	{
	333	struct ti_thermal_data *data;
	334
	335	data = ti_bandgap_get_sensor_data(bgp, id);
	336
	337	schedule_work(&data->thermal_wq);
	338
	339	return 0;
	340	}
	341
	342	int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
	343	{
	344	struct ti_thermal_data *data;
	345
	346	data = ti_bandgap_get_sensor_data(bgp, id);
	347	if (!data \|\| IS_ERR(data))
	348	data = ti_thermal_build_data(bgp, id);
	349
	350	if (!data)
	351	return -EINVAL;
	352
	353	if (!cpufreq_get_current_driver()) {
	354	dev_dbg(bgp->dev, "no cpufreq driver yet\n");
	355	return -EPROBE_DEFER;
	356	}
	357
	358	/* Register cooling device */
	359	data->cool_dev = cpufreq_cooling_register(cpu_present_mask);
	360	if (IS_ERR(data->cool_dev)) {
	361	dev_err(bgp->dev,
	362	"Failed to register cpufreq cooling device\n");
	363	return PTR_ERR(data->cool_dev);
	364	}
	365	ti_bandgap_set_sensor_data(bgp, id, data);
	366
	367	return 0;
	368	}
	369
	370	int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
	371	{
	372	struct ti_thermal_data *data;
	373
	374	data = ti_bandgap_get_sensor_data(bgp, id);
	375	cpufreq_cooling_unregister(data->cool_dev);
	376
	377	return 0;
	378	}