[deliverable/linux.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>

struct art {
	acpi_handle source;
	acpi_handle target;
	u64 weight;
	u64 ac0_max;
	u64 ac1_max;
	u64 ac2_max;
	u64 ac3_max;
	u64 ac4_max;
	u64 ac5_max;
	u64 ac6_max;
	u64 ac7_max;
	u64 ac8_max;
	u64 ac9_max;
};

struct trt {
	acpi_handle source;
	acpi_handle target;
	u64 influence;
	u64 sampling_period;
	u64 reverved1;
	u64 reverved2;
	u64 reverved3;
	u64 reverved4;
};

enum int3400_thermal_uuid {
	INT3400_THERMAL_PASSIVE_1,
	INT3400_THERMAL_PASSIVE_2,
	INT3400_THERMAL_ACTIVE,
	INT3400_THERMAL_CRITICAL,
	INT3400_THERMAL_COOLING_MODE,
	INT3400_THERMAL_MAXIMUM_UUID,
};

static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
	"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
	"9E04115A-AE87-4D1C-9500-0F3E340BFE75",
	"3A95C389-E4B8-4629-A526-C52C88626BAE",
	"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
	"16CAF1B7-DD38-40ed-B1C1-1B8A1913D531",
};

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;
};

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++) {
			u8 uuid[16];

			acpi_str_to_uuid(int3400_thermal_uuids[j], uuid);
			if (!strncmp(uuid, objb->buffer.pointer, 16)) {
				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 int parse_art(struct int3400_thermal_priv *priv)
{
	acpi_handle handle = priv->adev->handle;
	acpi_status status;
	int result = 0;
	int i;
	struct acpi_device *adev;
	union acpi_object *p;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct acpi_buffer element = { 0, NULL };
	struct acpi_buffer art_format = {
				sizeof("RRNNNNNNNNNNN"), "RRNNNNNNNNNNN" };

	if (!acpi_has_method(handle, "_ART"))
		return 0;

	status = acpi_evaluate_object(handle, "_ART", NULL, &buffer);
	if (ACPI_FAILURE(status))
		return -ENODEV;

	p = buffer.pointer;
	if (!p || (p->type != ACPI_TYPE_PACKAGE)) {
		pr_err("Invalid _ART data\n");
		result = -EFAULT;
		goto end;
	}

	/* ignore p->package.elements[0], as this is _ART Revision field */
	priv->art_count = p->package.count - 1;
	priv->arts = kzalloc(sizeof(struct art) * priv->art_count, GFP_KERNEL);
	if (!priv->arts) {
		result = -ENOMEM;
		goto end;
	}

	for (i = 0; i < priv->art_count; i++) {
		struct art *art = &(priv->arts[i]);

		element.length = sizeof(struct art);
		element.pointer = art;

		status = acpi_extract_package(&(p->package.elements[i + 1]),
					      &art_format, &element);
		if (ACPI_FAILURE(status)) {
			pr_err("Invalid _ART data");
			result = -EFAULT;
			kfree(priv->arts);
			goto end;
		}
		result = acpi_bus_get_device(art->source, &adev);
		if (!result)
			acpi_create_platform_device(adev, NULL);
		else
			pr_warn("Failed to get source ACPI device\n");
		result = acpi_bus_get_device(art->target, &adev);
		if (!result)
			acpi_create_platform_device(adev, NULL);
		else
			pr_warn("Failed to get source ACPI device\n");
	}
end:
	kfree(buffer.pointer);
	return result;
}

static int parse_trt(struct int3400_thermal_priv *priv)
{
	acpi_handle handle = priv->adev->handle;
	acpi_status status;
	int result = 0;
	int i;
	struct acpi_device *adev;
	union acpi_object *p;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct acpi_buffer element = { 0, NULL };
	struct acpi_buffer trt_format = { sizeof("RRNNNNNN"), "RRNNNNNN" };

	if (!acpi_has_method(handle, "_TRT"))
		return 0;

	status = acpi_evaluate_object(handle, "_TRT", NULL, &buffer);
	if (ACPI_FAILURE(status))
		return -ENODEV;

	p = buffer.pointer;
	if (!p || (p->type != ACPI_TYPE_PACKAGE)) {
		pr_err("Invalid _TRT data\n");
		result = -EFAULT;
		goto end;
	}

	priv->trt_count = p->package.count;
	priv->trts = kzalloc(sizeof(struct trt) * priv->trt_count, GFP_KERNEL);
	if (!priv->trts) {
		result = -ENOMEM;
		goto end;
	}

	for (i = 0; i < priv->trt_count; i++) {
		struct trt *trt = &(priv->trts[i]);

		element.length = sizeof(struct trt);
		element.pointer = trt;

		status = acpi_extract_package(&(p->package.elements[i]),
					      &trt_format, &element);
		if (ACPI_FAILURE(status)) {
			pr_err("Invalid _ART data");
			result = -EFAULT;
			kfree(priv->trts);
			goto end;
		}

		result = acpi_bus_get_device(trt->source, &adev);
		if (!result)
			acpi_create_platform_device(adev, NULL);
		else
			pr_warn("Failed to get source ACPI device\n");
		result = acpi_bus_get_device(trt->target, &adev);
		if (!result)
			acpi_create_platform_device(adev, NULL);
		else
			pr_warn("Failed to get target ACPI device\n");
	}
end:
	kfree(buffer.pointer);
	return result;
}

static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
			unsigned long *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;
		/* currently, only PASSIVE COOLING is supported */
		result = int3400_thermal_run_osc(priv->adev->handle,
					INT3400_THERMAL_PASSIVE_1, 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 = parse_art(priv);
	if (result)
		goto free_priv;

	result = parse_trt(priv);
	if (result)
		goto free_art;

	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_trt;
	}

	return 0;
free_trt:
	kfree(priv->trts);
free_art:
	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);

	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",
		   .owner = THIS_MODULE,
		   .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>
816cab93 ZR	17
	18	struct art {
	19	acpi_handle source;
	20	acpi_handle target;
	21	u64 weight;
	22	u64 ac0_max;
	23	u64 ac1_max;
	24	u64 ac2_max;
	25	u64 ac3_max;
	26	u64 ac4_max;
	27	u64 ac5_max;
	28	u64 ac6_max;
	29	u64 ac7_max;
	30	u64 ac8_max;
	31	u64 ac9_max;
	32	};
	33
	34	struct trt {
	35	acpi_handle source;
	36	acpi_handle target;
	37	u64 influence;
	38	u64 sampling_period;
	39	u64 reverved1;
	40	u64 reverved2;
	41	u64 reverved3;
	42	u64 reverved4;
	43	};
	44
c5738ddd ZR	45	enum int3400_thermal_uuid {
	46	INT3400_THERMAL_PASSIVE_1,
	47	INT3400_THERMAL_PASSIVE_2,
	48	INT3400_THERMAL_ACTIVE,
	49	INT3400_THERMAL_CRITICAL,
	50	INT3400_THERMAL_COOLING_MODE,
	51	INT3400_THERMAL_MAXIMUM_UUID,
	52	};
	53
	54	static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
	55	"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
	56	"9E04115A-AE87-4D1C-9500-0F3E340BFE75",
	57	"3A95C389-E4B8-4629-A526-C52C88626BAE",
	58	"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
	59	"16CAF1B7-DD38-40ed-B1C1-1B8A1913D531",
	60	};
	61
816cab93 ZR	62	struct int3400_thermal_priv {
816cab93 ZR	63	struct acpi_device *adev;
0ab15365 ZR	64	struct thermal_zone_device *thermal;
0ab15365 ZR	65	int mode;
816cab93 ZR	66	int art_count;
	67	struct art *arts;
	68	int trt_count;
	69	struct trt *trts;
c5738ddd	70	u8 uuid_bitmap;
816cab93 ZR	71	};
816cab93 ZR	72
c5738ddd ZR	73	static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
	74	{
	75	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
	76	union acpi_object obja, objb;
	77	int i, j;
	78	int result = 0;
	79	acpi_status status;
	80
	81	status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
	82	if (ACPI_FAILURE(status))
	83	return -ENODEV;
	84
	85	obja = (union acpi_object *)buf.pointer;
	86	if (obja->type != ACPI_TYPE_PACKAGE) {
	87	result = -EINVAL;
	88	goto end;
	89	}
	90
	91	for (i = 0; i < obja->package.count; i++) {
	92	objb = &obja->package.elements[i];
	93	if (objb->type != ACPI_TYPE_BUFFER) {
	94	result = -EINVAL;
	95	goto end;
	96	}
	97
	98	/* UUID must be 16 bytes */
	99	if (objb->buffer.length != 16) {
	100	result = -EINVAL;
	101	goto end;
	102	}
	103
	104	for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
	105	u8 uuid[16];
	106
	107	acpi_str_to_uuid(int3400_thermal_uuids[j], uuid);
	108	if (!strncmp(uuid, objb->buffer.pointer, 16)) {
	109	priv->uuid_bitmap \|= (1 << j);
	110	break;
	111	}
	112	}
	113	}
	114
	115	end:
	116	kfree(buf.pointer);
	117	return result;
	118	}
	119
0ab15365 ZR	120	static int int3400_thermal_run_osc(acpi_handle handle,
	121	enum int3400_thermal_uuid uuid, bool enable)
	122	{
	123	u32 ret, buf[2];
	124	acpi_status status;
	125	int result = 0;
	126	struct acpi_osc_context context = {
	127	.uuid_str = int3400_thermal_uuids[uuid],
	128	.rev = 1,
	129	.cap.length = 8,
	130	};
	131
	132	buf[OSC_QUERY_DWORD] = 0;
	133	buf[OSC_SUPPORT_DWORD] = enable;
	134
	135	context.cap.pointer = buf;
	136
	137	status = acpi_run_osc(handle, &context);
	138	if (ACPI_SUCCESS(status)) {
	139	ret = ((u32 )(context.ret.pointer + 4));
	140	if (ret != enable)
	141	result = -EPERM;
	142	} else
	143	result = -EPERM;
	144
	145	kfree(context.ret.pointer);
	146	return result;
	147	}
	148
	149
816cab93 ZR	150	static int parse_art(struct int3400_thermal_priv *priv)
	151	{
	152	acpi_handle handle = priv->adev->handle;
	153	acpi_status status;
	154	int result = 0;
	155	int i;
	156	struct acpi_device *adev;
	157	union acpi_object *p;
	158	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	159	struct acpi_buffer element = { 0, NULL };
	160	struct acpi_buffer art_format = {
	161	sizeof("RRNNNNNNNNNNN"), "RRNNNNNNNNNNN" };
	162
	163	if (!acpi_has_method(handle, "_ART"))
	164	return 0;
	165
	166	status = acpi_evaluate_object(handle, "_ART", NULL, &buffer);
	167	if (ACPI_FAILURE(status))
	168	return -ENODEV;
	169
	170	p = buffer.pointer;
	171	if (!p \|\| (p->type != ACPI_TYPE_PACKAGE)) {
	172	pr_err("Invalid _ART data\n");
	173	result = -EFAULT;
	174	goto end;
	175	}
	176
	177	/* ignore p->package.elements[0], as this is _ART Revision field */
	178	priv->art_count = p->package.count - 1;
	179	priv->arts = kzalloc(sizeof(struct art) * priv->art_count, GFP_KERNEL);
	180	if (!priv->arts) {
	181	result = -ENOMEM;
	182	goto end;
	183	}
	184
	185	for (i = 0; i < priv->art_count; i++) {
	186	struct art *art = &(priv->arts[i]);
	187
	188	element.length = sizeof(struct art);
	189	element.pointer = art;
	190
	191	status = acpi_extract_package(&(p->package.elements[i + 1]),
	192	&art_format, &element);
	193	if (ACPI_FAILURE(status)) {
	194	pr_err("Invalid _ART data");
	195	result = -EFAULT;
	196	kfree(priv->arts);
	197	goto end;
	198	}
	199	result = acpi_bus_get_device(art->source, &adev);
	200	if (!result)
	201	acpi_create_platform_device(adev, NULL);
	202	else
	203	pr_warn("Failed to get source ACPI device\n");
	204	result = acpi_bus_get_device(art->target, &adev);
	205	if (!result)
	206	acpi_create_platform_device(adev, NULL);
	207	else
	208	pr_warn("Failed to get source ACPI device\n");
	209	}
	210	end:
	211	kfree(buffer.pointer);
	212	return result;
	213	}
214
215	static int parse_trt(struct int3400_thermal_priv *priv)
216	{
217	acpi_handle handle = priv->adev->handle;
218	acpi_status status;
219	int result = 0;
220	int i;
221	struct acpi_device *adev;
222	union acpi_object *p;
223	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
224	struct acpi_buffer element = { 0, NULL };
225	struct acpi_buffer trt_format = { sizeof("RRNNNNNN"), "RRNNNNNN" };
226
227	if (!acpi_has_method(handle, "_TRT"))
228	return 0;
229
230	status = acpi_evaluate_object(handle, "_TRT", NULL, &buffer);
231	if (ACPI_FAILURE(status))
232	return -ENODEV;
233
234	p = buffer.pointer;
235	if (!p \|\| (p->type != ACPI_TYPE_PACKAGE)) {
236	pr_err("Invalid _TRT data\n");
237	result = -EFAULT;
238	goto end;
239	}
240
241	priv->trt_count = p->package.count;
242	priv->trts = kzalloc(sizeof(struct trt) * priv->trt_count, GFP_KERNEL);
243	if (!priv->trts) {
244	result = -ENOMEM;
245	goto end;
246	}
247
248	for (i = 0; i < priv->trt_count; i++) {
249	struct trt *trt = &(priv->trts[i]);
250
251	element.length = sizeof(struct trt);
252	element.pointer = trt;
253
254	status = acpi_extract_package(&(p->package.elements[i]),
255	&trt_format, &element);
256	if (ACPI_FAILURE(status)) {
257	pr_err("Invalid _ART data");
258	result = -EFAULT;
259	kfree(priv->trts);
260	goto end;
261	}
262
263	result = acpi_bus_get_device(trt->source, &adev);
264	if (!result)
265	acpi_create_platform_device(adev, NULL);
266	else
267	pr_warn("Failed to get source ACPI device\n");
268	result = acpi_bus_get_device(trt->target, &adev);
269	if (!result)
270	acpi_create_platform_device(adev, NULL);
271	else
272	pr_warn("Failed to get target ACPI device\n");
273	}
274	end:
275	kfree(buffer.pointer);
276	return result;
277	}
278
0ab15365 ZR	279	static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
	280	unsigned long *temp)
	281	{
	282	temp = 20 1000; /* faked temp sensor with 20C */
	283	return 0;
	284	}
	285
	286	static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
	287	enum thermal_device_mode *mode)
	288	{
	289	struct int3400_thermal_priv *priv = thermal->devdata;
	290
	291	if (!priv)
	292	return -EINVAL;
	293
	294	*mode = priv->mode;
	295
	296	return 0;
	297	}
	298
	299	static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
	300	enum thermal_device_mode mode)
	301	{
	302	struct int3400_thermal_priv *priv = thermal->devdata;
	303	bool enable;
	304	int result = 0;
	305
	306	if (!priv)
	307	return -EINVAL;
	308
	309	if (mode == THERMAL_DEVICE_ENABLED)
	310	enable = true;
	311	else if (mode == THERMAL_DEVICE_DISABLED)
	312	enable = false;
	313	else
	314	return -EINVAL;
	315
	316	if (enable != priv->mode) {
	317	priv->mode = enable;
	318	/* currently, only PASSIVE COOLING is supported */
	319	result = int3400_thermal_run_osc(priv->adev->handle,
	320	INT3400_THERMAL_PASSIVE_1, enable);
	321	}
	322	return result;
	323	}
	324
	325	static struct thermal_zone_device_ops int3400_thermal_ops = {
	326	.get_temp = int3400_thermal_get_temp,
	327	};
	328
	329	static struct thermal_zone_params int3400_thermal_params = {
	330	.governor_name = "user_space",
	331	.no_hwmon = true,
	332	};
	333
816cab93 ZR	334	static int int3400_thermal_probe(struct platform_device *pdev)
	335	{
	336	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
	337	struct int3400_thermal_priv *priv;
	338	int result;
	339
	340	if (!adev)
	341	return -ENODEV;
	342
	343	priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
	344	if (!priv)
	345	return -ENOMEM;
	346
	347	priv->adev = adev;
	348
c5738ddd ZR	349	result = int3400_thermal_get_uuids(priv);
	350	if (result)
	351	goto free_priv;
	352
816cab93 ZR	353	result = parse_art(priv);
	354	if (result)
	355	goto free_priv;
	356
	357	result = parse_trt(priv);
	358	if (result)
	359	goto free_art;
	360
	361	platform_set_drvdata(pdev, priv);
	362
0ab15365 ZR	363	if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
	364	int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
	365	int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
	366	}
	367	priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
	368	priv, &int3400_thermal_ops,
	369	&int3400_thermal_params, 0, 0);
	370	if (IS_ERR(priv->thermal)) {
	371	result = PTR_ERR(priv->thermal);
	372	goto free_trt;
	373	}
	374
816cab93	375	return 0;
0ab15365 ZR	376	free_trt:
0ab15365 ZR	377	kfree(priv->trts);
816cab93 ZR	378	free_art:
	379	kfree(priv->arts);
	380	free_priv:
	381	kfree(priv);
	382	return result;
	383	}
	384
	385	static int int3400_thermal_remove(struct platform_device *pdev)
	386	{
	387	struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
	388
0ab15365	389	thermal_zone_device_unregister(priv->thermal);
816cab93 ZR	390	kfree(priv->trts);
	391	kfree(priv->arts);
	392	kfree(priv);
	393	return 0;
	394	}
	395
	396	static const struct acpi_device_id int3400_thermal_match[] = {
	397	{"INT3400", 0},
	398	{}
	399	};
	400
	401	MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
	402
	403	static struct platform_driver int3400_thermal_driver = {
	404	.probe = int3400_thermal_probe,
	405	.remove = int3400_thermal_remove,
	406	.driver = {
	407	.name = "int3400 thermal",
	408	.owner = THIS_MODULE,
	409	.acpi_match_table = ACPI_PTR(int3400_thermal_match),
	410	},
	411	};
	412
	413	module_platform_driver(int3400_thermal_driver);
	414
	415	MODULE_DESCRIPTION("INT3400 Thermal driver");
	416	MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
	417	MODULE_LICENSE("GPL");