[mirror_ubuntu-bionic-kernel.git] / drivers / thermal / int340x_thermal / int3400_thermal.c

/*
 * INT3400 thermal driver
 *
 * Copyright (C) 2014, Intel Corporation
 * Authors: Zhang Rui <rui.zhang@intel.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.
 *
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/thermal.h>
#include "acpi_thermal_rel.h"

#define INT3400_THERMAL_TABLE_CHANGED 0x83

enum int3400_thermal_uuid {
	INT3400_THERMAL_PASSIVE_1,
	INT3400_THERMAL_ACTIVE,
	INT3400_THERMAL_CRITICAL,
	INT3400_THERMAL_MAXIMUM_UUID,
};

static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
	"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
	"3A95C389-E4B8-4629-A526-C52C88626BAE",
	"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
};

struct int3400_thermal_priv {
	struct acpi_device *adev;
	struct thermal_zone_device *thermal;
	int mode;
	int art_count;
	struct art *arts;
	int trt_count;
	struct trt *trts;
	u8 uuid_bitmap;
	int rel_misc_dev_res;
	int current_uuid_index;
};

static ssize_t available_uuids_show(struct device *dev,
				    struct device_attribute *attr,
				    char *buf)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	int i;
	int length = 0;

	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
		if (priv->uuid_bitmap & (1 << i))
			if (PAGE_SIZE - length > 0)
				length += snprintf(&buf[length],
						   PAGE_SIZE - length,
						   "%s\n",
						   int3400_thermal_uuids[i]);
	}

	return length;
}

static ssize_t current_uuid_show(struct device *dev,
				 struct device_attribute *devattr, char *buf)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);

	if (priv->uuid_bitmap & (1 << priv->current_uuid_index))
		return sprintf(buf, "%s\n",
			       int3400_thermal_uuids[priv->current_uuid_index]);
	else
		return sprintf(buf, "INVALID\n");
}

static ssize_t current_uuid_store(struct device *dev,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	int i;

	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
		if ((priv->uuid_bitmap & (1 << i)) &&
		    !(strncmp(buf, int3400_thermal_uuids[i],
			      sizeof(int3400_thermal_uuids[i]) - 1))) {
			priv->current_uuid_index = i;
			return count;
		}
	}

	return -EINVAL;
}

static DEVICE_ATTR_RW(current_uuid);
static DEVICE_ATTR_RO(available_uuids);
static struct attribute *uuid_attrs[] = {
	&dev_attr_available_uuids.attr,
	&dev_attr_current_uuid.attr,
	NULL
};

static const struct attribute_group uuid_attribute_group = {
	.attrs = uuid_attrs,
	.name = "uuids"
};

static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
{
	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
	union acpi_object *obja, *objb;
	int i, j;
	int result = 0;
	acpi_status status;

	status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
	if (ACPI_FAILURE(status))
		return -ENODEV;

	obja = (union acpi_object *)buf.pointer;
	if (obja->type != ACPI_TYPE_PACKAGE) {
		result = -EINVAL;
		goto end;
	}

	for (i = 0; i < obja->package.count; i++) {
		objb = &obja->package.elements[i];
		if (objb->type != ACPI_TYPE_BUFFER) {
			result = -EINVAL;
			goto end;
		}

		/* UUID must be 16 bytes */
		if (objb->buffer.length != 16) {
			result = -EINVAL;
			goto end;
		}

		for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
			guid_t guid;

			guid_parse(int3400_thermal_uuids[j], &guid);
			if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
				priv->uuid_bitmap |= (1 << j);
				break;
			}
		}
	}

end:
	kfree(buf.pointer);
	return result;
}

static int int3400_thermal_run_osc(acpi_handle handle,
				enum int3400_thermal_uuid uuid, bool enable)
{
	u32 ret, buf[2];
	acpi_status status;
	int result = 0;
	struct acpi_osc_context context = {
		.uuid_str = int3400_thermal_uuids[uuid],
		.rev = 1,
		.cap.length = 8,
	};

	buf[OSC_QUERY_DWORD] = 0;
	buf[OSC_SUPPORT_DWORD] = enable;

	context.cap.pointer = buf;

	status = acpi_run_osc(handle, &context);
	if (ACPI_SUCCESS(status)) {
		ret = *((u32 *)(context.ret.pointer + 4));
		if (ret != enable)
			result = -EPERM;
	} else
		result = -EPERM;

	kfree(context.ret.pointer);
	return result;
}

static void int3400_notify(acpi_handle handle,
			u32 event,
			void *data)
{
	struct int3400_thermal_priv *priv = data;
	char *thermal_prop[5];

	if (!priv)
		return;

	switch (event) {
	case INT3400_THERMAL_TABLE_CHANGED:
		thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s",
				priv->thermal->type);
		thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d",
				priv->thermal->temperature);
		thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
		thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d",
				THERMAL_TABLE_CHANGED);
		thermal_prop[4] = NULL;
		kobject_uevent_env(&priv->thermal->device.kobj, KOBJ_CHANGE,
				thermal_prop);
		break;
	default:
		dev_err(&priv->adev->dev, "Unsupported event [0x%x]\n", event);
		break;
	}
}

static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
			int *temp)
{
	*temp = 20 * 1000; /* faked temp sensor with 20C */
	return 0;
}

static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
				enum thermal_device_mode *mode)
{
	struct int3400_thermal_priv *priv = thermal->devdata;

	if (!priv)
		return -EINVAL;

	*mode = priv->mode;

	return 0;
}

static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
				enum thermal_device_mode mode)
{
	struct int3400_thermal_priv *priv = thermal->devdata;
	bool enable;
	int result = 0;

	if (!priv)
		return -EINVAL;

	if (mode == THERMAL_DEVICE_ENABLED)
		enable = true;
	else if (mode == THERMAL_DEVICE_DISABLED)
		enable = false;
	else
		return -EINVAL;

	if (enable != priv->mode) {
		priv->mode = enable;
		result = int3400_thermal_run_osc(priv->adev->handle,
						 priv->current_uuid_index,
						 enable);
	}
	return result;
}

static struct thermal_zone_device_ops int3400_thermal_ops = {
	.get_temp = int3400_thermal_get_temp,
};

static struct thermal_zone_params int3400_thermal_params = {
	.governor_name = "user_space",
	.no_hwmon = true,
};

static int int3400_thermal_probe(struct platform_device *pdev)
{
	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
	struct int3400_thermal_priv *priv;
	int result;

	if (!adev)
		return -ENODEV;

	priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->adev = adev;

	result = int3400_thermal_get_uuids(priv);
	if (result)
		goto free_priv;

	result = acpi_parse_art(priv->adev->handle, &priv->art_count,
				&priv->arts, true);
	if (result)
		dev_dbg(&pdev->dev, "_ART table parsing error\n");

	result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
				&priv->trts, true);
	if (result)
		dev_dbg(&pdev->dev, "_TRT table parsing error\n");

	platform_set_drvdata(pdev, priv);

	if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
		int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
		int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
	}
	priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
						priv, &int3400_thermal_ops,
						&int3400_thermal_params, 0, 0);
	if (IS_ERR(priv->thermal)) {
		result = PTR_ERR(priv->thermal);
		goto free_art_trt;
	}

	priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
							priv->adev->handle);

	result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
	if (result)
		goto free_rel_misc;

	result = acpi_install_notify_handler(
			priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
			(void *)priv);
	if (result)
		goto free_sysfs;

	return 0;

free_sysfs:
	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
free_rel_misc:
	if (!priv->rel_misc_dev_res)
		acpi_thermal_rel_misc_device_remove(priv->adev->handle);
	thermal_zone_device_unregister(priv->thermal);
free_art_trt:
	kfree(priv->trts);
	kfree(priv->arts);
free_priv:
	kfree(priv);
	return result;
}

static int int3400_thermal_remove(struct platform_device *pdev)
{
	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);

	acpi_remove_notify_handler(
			priv->adev->handle, ACPI_DEVICE_NOTIFY,
			int3400_notify);

	if (!priv->rel_misc_dev_res)
		acpi_thermal_rel_misc_device_remove(priv->adev->handle);

	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
	thermal_zone_device_unregister(priv->thermal);
	kfree(priv->trts);
	kfree(priv->arts);
	kfree(priv);
	return 0;
}

static const struct acpi_device_id int3400_thermal_match[] = {
	{"INT3400", 0},
	{}
};

MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);

static struct platform_driver int3400_thermal_driver = {
	.probe = int3400_thermal_probe,
	.remove = int3400_thermal_remove,
	.driver = {
		   .name = "int3400 thermal",
		   .acpi_match_table = ACPI_PTR(int3400_thermal_match),
		   },
};

module_platform_driver(int3400_thermal_driver);

MODULE_DESCRIPTION("INT3400 Thermal driver");
MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
816cab93 ZR	1	/*
	2	* INT3400 thermal driver
	3	*
	4	* Copyright (C) 2014, Intel Corporation
	5	* Authors: Zhang Rui <rui.zhang@intel.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/platform_device.h>
	15	#include <linux/acpi.h>
0ab15365	16	#include <linux/thermal.h>
6306e68a	17	#include "acpi_thermal_rel.h"
816cab93	18
38e44da5 BB	19	#define INT3400_THERMAL_TABLE_CHANGED 0x83
38e44da5 BB	20
c5738ddd ZR	21	enum int3400_thermal_uuid {
c5738ddd ZR	22	INT3400_THERMAL_PASSIVE_1,
c5738ddd ZR	23	INT3400_THERMAL_ACTIVE,
c5738ddd ZR	24	INT3400_THERMAL_CRITICAL,
c5738ddd ZR	25	INT3400_THERMAL_MAXIMUM_UUID,
	26	};
	27
87085ff2	28	static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
c5738ddd	29	"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
c5738ddd ZR	30	"3A95C389-E4B8-4629-A526-C52C88626BAE",
c5738ddd ZR	31	"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
c5738ddd ZR	32	};
c5738ddd ZR	33
816cab93 ZR	34	struct int3400_thermal_priv {
816cab93 ZR	35	struct acpi_device *adev;
0ab15365 ZR	36	struct thermal_zone_device *thermal;
0ab15365 ZR	37	int mode;
816cab93 ZR	38	int art_count;
	39	struct art *arts;
	40	int trt_count;
	41	struct trt *trts;
c5738ddd	42	u8 uuid_bitmap;
6306e68a	43	int rel_misc_dev_res;
19ecaea2 SP	44	int current_uuid_index;
	45	};
	46
	47	static ssize_t available_uuids_show(struct device *dev,
	48	struct device_attribute *attr,
	49	char *buf)
	50	{
	51	struct platform_device *pdev = to_platform_device(dev);
	52	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	53	int i;
	54	int length = 0;
	55
	56	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
	57	if (priv->uuid_bitmap & (1 << i))
	58	if (PAGE_SIZE - length > 0)
	59	length += snprintf(&buf[length],
	60	PAGE_SIZE - length,
	61	"%s\n",
	62	int3400_thermal_uuids[i]);
	63	}
	64
	65	return length;
	66	}
	67
	68	static ssize_t current_uuid_show(struct device *dev,
	69	struct device_attribute devattr, char buf)
	70	{
	71	struct platform_device *pdev = to_platform_device(dev);
	72	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	73
	74	if (priv->uuid_bitmap & (1 << priv->current_uuid_index))
	75	return sprintf(buf, "%s\n",
	76	int3400_thermal_uuids[priv->current_uuid_index]);
	77	else
	78	return sprintf(buf, "INVALID\n");
	79	}
	80
	81	static ssize_t current_uuid_store(struct device *dev,
	82	struct device_attribute *attr,
	83	const char *buf, size_t count)
	84	{
	85	struct platform_device *pdev = to_platform_device(dev);
	86	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	87	int i;
	88
	89	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
	90	if ((priv->uuid_bitmap & (1 << i)) &&
	91	!(strncmp(buf, int3400_thermal_uuids[i],
	92	sizeof(int3400_thermal_uuids[i]) - 1))) {
	93	priv->current_uuid_index = i;
	94	return count;
	95	}
	96	}
	97
	98	return -EINVAL;
	99	}
	100
5184eeb3	101	static DEVICE_ATTR_RW(current_uuid);
19ecaea2 SP	102	static DEVICE_ATTR_RO(available_uuids);
	103	static struct attribute *uuid_attrs[] = {
	104	&dev_attr_available_uuids.attr,
	105	&dev_attr_current_uuid.attr,
	106	NULL
	107	};
	108
9fc2230f	109	static const struct attribute_group uuid_attribute_group = {
19ecaea2 SP	110	.attrs = uuid_attrs,
19ecaea2 SP	111	.name = "uuids"
816cab93 ZR	112	};
816cab93 ZR	113
c5738ddd ZR	114	static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
	115	{
	116	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
	117	union acpi_object obja, objb;
	118	int i, j;
	119	int result = 0;
	120	acpi_status status;
	121
	122	status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
	123	if (ACPI_FAILURE(status))
	124	return -ENODEV;
	125
	126	obja = (union acpi_object *)buf.pointer;
	127	if (obja->type != ACPI_TYPE_PACKAGE) {
	128	result = -EINVAL;
	129	goto end;
	130	}
	131
	132	for (i = 0; i < obja->package.count; i++) {
	133	objb = &obja->package.elements[i];
	134	if (objb->type != ACPI_TYPE_BUFFER) {
	135	result = -EINVAL;
	136	goto end;
	137	}
	138
	139	/* UUID must be 16 bytes */
	140	if (objb->buffer.length != 16) {
	141	result = -EINVAL;
	142	goto end;
	143	}
	144
	145	for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
f4c19ac9	146	guid_t guid;
c5738ddd	147
f4c19ac9	148	guid_parse(int3400_thermal_uuids[j], &guid);
87085ff2	149	if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
c5738ddd ZR	150	priv->uuid_bitmap \|= (1 << j);
	151	break;
	152	}
	153	}
	154	}
	155
	156	end:
	157	kfree(buf.pointer);
	158	return result;
	159	}
	160
0ab15365 ZR	161	static int int3400_thermal_run_osc(acpi_handle handle,
	162	enum int3400_thermal_uuid uuid, bool enable)
	163	{
	164	u32 ret, buf[2];
	165	acpi_status status;
	166	int result = 0;
	167	struct acpi_osc_context context = {
	168	.uuid_str = int3400_thermal_uuids[uuid],
	169	.rev = 1,
	170	.cap.length = 8,
	171	};
	172
	173	buf[OSC_QUERY_DWORD] = 0;
	174	buf[OSC_SUPPORT_DWORD] = enable;
	175
	176	context.cap.pointer = buf;
	177
	178	status = acpi_run_osc(handle, &context);
	179	if (ACPI_SUCCESS(status)) {
	180	ret = ((u32 )(context.ret.pointer + 4));
	181	if (ret != enable)
	182	result = -EPERM;
	183	} else
	184	result = -EPERM;
	185
	186	kfree(context.ret.pointer);
	187	return result;
	188	}
	189
38e44da5 BB	190	static void int3400_notify(acpi_handle handle,
	191	u32 event,
	192	void *data)
	193	{
	194	struct int3400_thermal_priv *priv = data;
	195	char *thermal_prop[5];
	196
	197	if (!priv)
	198	return;
	199
	200	switch (event) {
	201	case INT3400_THERMAL_TABLE_CHANGED:
	202	thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s",
	203	priv->thermal->type);
	204	thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d",
	205	priv->thermal->temperature);
	206	thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
	207	thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d",
	208	THERMAL_TABLE_CHANGED);
	209	thermal_prop[4] = NULL;
	210	kobject_uevent_env(&priv->thermal->device.kobj, KOBJ_CHANGE,
	211	thermal_prop);
	212	break;
	213	default:
	214	dev_err(&priv->adev->dev, "Unsupported event [0x%x]\n", event);
	215	break;
	216	}
	217	}
	218
0ab15365	219	static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
17e8351a	220	int *temp)
0ab15365 ZR	221	{
	222	temp = 20 1000; /* faked temp sensor with 20C */
	223	return 0;
	224	}
	225
	226	static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
	227	enum thermal_device_mode *mode)
	228	{
	229	struct int3400_thermal_priv *priv = thermal->devdata;
	230
	231	if (!priv)
	232	return -EINVAL;
	233
	234	*mode = priv->mode;
	235
	236	return 0;
	237	}
	238
	239	static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
	240	enum thermal_device_mode mode)
	241	{
	242	struct int3400_thermal_priv *priv = thermal->devdata;
	243	bool enable;
	244	int result = 0;
	245
	246	if (!priv)
	247	return -EINVAL;
	248
	249	if (mode == THERMAL_DEVICE_ENABLED)
	250	enable = true;
	251	else if (mode == THERMAL_DEVICE_DISABLED)
	252	enable = false;
	253	else
	254	return -EINVAL;
	255
	256	if (enable != priv->mode) {
	257	priv->mode = enable;
0ab15365	258	result = int3400_thermal_run_osc(priv->adev->handle,
19ecaea2 SP	259	priv->current_uuid_index,
19ecaea2 SP	260	enable);
0ab15365 ZR	261	}
	262	return result;
	263	}
	264
	265	static struct thermal_zone_device_ops int3400_thermal_ops = {
	266	.get_temp = int3400_thermal_get_temp,
	267	};
	268
	269	static struct thermal_zone_params int3400_thermal_params = {
	270	.governor_name = "user_space",
	271	.no_hwmon = true,
	272	};
	273
816cab93 ZR	274	static int int3400_thermal_probe(struct platform_device *pdev)
	275	{
	276	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
	277	struct int3400_thermal_priv *priv;
	278	int result;
	279
	280	if (!adev)
	281	return -ENODEV;
	282
	283	priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
	284	if (!priv)
	285	return -ENOMEM;
	286
	287	priv->adev = adev;
	288
c5738ddd ZR	289	result = int3400_thermal_get_uuids(priv);
	290	if (result)
	291	goto free_priv;
	292
6306e68a JP	293	result = acpi_parse_art(priv->adev->handle, &priv->art_count,
6306e68a JP	294	&priv->arts, true);
816cab93	295	if (result)
f1260791	296	dev_dbg(&pdev->dev, "_ART table parsing error\n");
6306e68a JP	297
	298	result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
	299	&priv->trts, true);
816cab93	300	if (result)
f1260791	301	dev_dbg(&pdev->dev, "_TRT table parsing error\n");
816cab93 ZR	302
	303	platform_set_drvdata(pdev, priv);
	304
0ab15365 ZR	305	if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
	306	int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
	307	int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
	308	}
	309	priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
	310	priv, &int3400_thermal_ops,
	311	&int3400_thermal_params, 0, 0);
	312	if (IS_ERR(priv->thermal)) {
	313	result = PTR_ERR(priv->thermal);
f1260791	314	goto free_art_trt;
0ab15365 ZR	315	}
0ab15365 ZR	316
6306e68a JP	317	priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
	318	priv->adev->handle);
	319
19ecaea2 SP	320	result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
19ecaea2 SP	321	if (result)
d6884ca2	322	goto free_rel_misc;
19ecaea2	323
38e44da5 BB	324	result = acpi_install_notify_handler(
	325	priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
	326	(void *)priv);
	327	if (result)
d6884ca2	328	goto free_sysfs;
38e44da5	329
816cab93	330	return 0;
19ecaea2	331
d6884ca2 AK	332	free_sysfs:
	333	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
	334	free_rel_misc:
	335	if (!priv->rel_misc_dev_res)
	336	acpi_thermal_rel_misc_device_remove(priv->adev->handle);
19ecaea2	337	thermal_zone_device_unregister(priv->thermal);
f1260791	338	free_art_trt:
0ab15365	339	kfree(priv->trts);
816cab93 ZR	340	kfree(priv->arts);
	341	free_priv:
	342	kfree(priv);
	343	return result;
	344	}
	345
	346	static int int3400_thermal_remove(struct platform_device *pdev)
	347	{
	348	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	349
38e44da5 BB	350	acpi_remove_notify_handler(
	351	priv->adev->handle, ACPI_DEVICE_NOTIFY,
	352	int3400_notify);
	353
6306e68a JP	354	if (!priv->rel_misc_dev_res)
	355	acpi_thermal_rel_misc_device_remove(priv->adev->handle);
	356
19ecaea2	357	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
0ab15365	358	thermal_zone_device_unregister(priv->thermal);
816cab93 ZR	359	kfree(priv->trts);
	360	kfree(priv->arts);
	361	kfree(priv);
	362	return 0;
	363	}
	364
	365	static const struct acpi_device_id int3400_thermal_match[] = {
	366	{"INT3400", 0},
	367	{}
	368	};
	369
	370	MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
	371
	372	static struct platform_driver int3400_thermal_driver = {
	373	.probe = int3400_thermal_probe,
	374	.remove = int3400_thermal_remove,
	375	.driver = {
	376	.name = "int3400 thermal",
816cab93 ZR	377	.acpi_match_table = ACPI_PTR(int3400_thermal_match),
	378	},
	379	};
	380
	381	module_platform_driver(int3400_thermal_driver);
	382
	383	MODULE_DESCRIPTION("INT3400 Thermal driver");
	384	MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
	385	MODULE_LICENSE("GPL");