[linux-2.6-block.git] / drivers / thermal / intel / int340x_thermal / int3403_thermal.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * ACPI INT3403 thermal driver
 * Copyright (c) 2013, Intel Corporation.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/thermal.h>
#include <linux/platform_device.h>
#include "int340x_thermal_zone.h"

#define INT3403_TYPE_SENSOR		0x03
#define INT3403_TYPE_CHARGER		0x0B
#define INT3403_TYPE_BATTERY		0x0C
#define INT3403_PERF_CHANGED_EVENT	0x80
#define INT3403_PERF_TRIP_POINT_CHANGED	0x81
#define INT3403_THERMAL_EVENT		0x90

/* Preserved structure for future expandbility */
struct int3403_sensor {
	struct int34x_thermal_zone *int340x_zone;
};

struct int3403_cdev {
	struct thermal_cooling_device *cdev;
	unsigned long max_state;
};

struct int3403_priv {
	struct platform_device *pdev;
	struct acpi_device *adev;
	unsigned long long type;
	void *priv;
};

static void int3403_notify(acpi_handle handle,
		u32 event, void *data)
{
	struct int3403_priv *priv = data;
	struct int3403_sensor *obj;

	if (!priv)
		return;

	obj = priv->priv;
	if (priv->type != INT3403_TYPE_SENSOR || !obj)
		return;

	switch (event) {
	case INT3403_PERF_CHANGED_EVENT:
		break;
	case INT3403_THERMAL_EVENT:
		int340x_thermal_zone_device_update(obj->int340x_zone,
						   THERMAL_TRIP_VIOLATED);
		break;
	case INT3403_PERF_TRIP_POINT_CHANGED:
		int340x_thermal_update_trips(obj->int340x_zone);
		int340x_thermal_zone_device_update(obj->int340x_zone,
						   THERMAL_TRIP_CHANGED);
		break;
	default:
		dev_dbg(&priv->pdev->dev, "Unsupported event [0x%x]\n", event);
		break;
	}
}

static int int3403_sensor_add(struct int3403_priv *priv)
{
	int result = 0;
	struct int3403_sensor *obj;

	obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL);
	if (!obj)
		return -ENOMEM;

	priv->priv = obj;

	obj->int340x_zone = int340x_thermal_zone_add(priv->adev, NULL);
	if (IS_ERR(obj->int340x_zone))
		return PTR_ERR(obj->int340x_zone);

	result = acpi_install_notify_handler(priv->adev->handle,
			ACPI_DEVICE_NOTIFY, int3403_notify,
			(void *)priv);
	if (result)
		goto err_free_obj;

	return 0;

 err_free_obj:
	int340x_thermal_zone_remove(obj->int340x_zone);
	return result;
}

static int int3403_sensor_remove(struct int3403_priv *priv)
{
	struct int3403_sensor *obj = priv->priv;

	acpi_remove_notify_handler(priv->adev->handle,
				   ACPI_DEVICE_NOTIFY, int3403_notify);
	int340x_thermal_zone_remove(obj->int340x_zone);

	return 0;
}

/* INT3403 Cooling devices */
static int int3403_get_max_state(struct thermal_cooling_device *cdev,
				 unsigned long *state)
{
	struct int3403_priv *priv = cdev->devdata;
	struct int3403_cdev *obj = priv->priv;

	*state = obj->max_state;
	return 0;
}

static int int3403_get_cur_state(struct thermal_cooling_device *cdev,
				 unsigned long *state)
{
	struct int3403_priv *priv = cdev->devdata;
	unsigned long long level;
	acpi_status status;

	status = acpi_evaluate_integer(priv->adev->handle, "PPPC", NULL, &level);
	if (ACPI_SUCCESS(status)) {
		*state = level;
		return 0;
	} else
		return -EINVAL;
}

static int
int3403_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
{
	struct int3403_priv *priv = cdev->devdata;
	acpi_status status;

	status = acpi_execute_simple_method(priv->adev->handle, "SPPC", state);
	if (ACPI_SUCCESS(status))
		return 0;
	else
		return -EINVAL;
}

static const struct thermal_cooling_device_ops int3403_cooling_ops = {
	.get_max_state = int3403_get_max_state,
	.get_cur_state = int3403_get_cur_state,
	.set_cur_state = int3403_set_cur_state,
};

static int int3403_cdev_add(struct int3403_priv *priv)
{
	int result = 0;
	acpi_status status;
	struct int3403_cdev *obj;
	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL };
	union acpi_object *p;

	obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL);
	if (!obj)
		return -ENOMEM;

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

	p = buf.pointer;
	if (!p || (p->type != ACPI_TYPE_PACKAGE)) {
		pr_warn("Invalid PPSS data\n");
		kfree(buf.pointer);
		return -EFAULT;
	}

	priv->priv = obj;
	obj->max_state = p->package.count - 1;
	obj->cdev =
		thermal_cooling_device_register(acpi_device_bid(priv->adev),
				priv, &int3403_cooling_ops);
	if (IS_ERR(obj->cdev))
		result = PTR_ERR(obj->cdev);

	kfree(buf.pointer);
	/* TODO: add ACPI notification support */

	return result;
}

static int int3403_cdev_remove(struct int3403_priv *priv)
{
	struct int3403_cdev *obj = priv->priv;

	thermal_cooling_device_unregister(obj->cdev);
	return 0;
}

static int int3403_add(struct platform_device *pdev)
{
	struct int3403_priv *priv;
	int result = 0;
	unsigned long long tmp;
	acpi_status status;

	priv = devm_kzalloc(&pdev->dev, sizeof(struct int3403_priv),
			    GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->pdev = pdev;
	priv->adev = ACPI_COMPANION(&(pdev->dev));
	if (!priv->adev) {
		result = -EINVAL;
		goto err;
	}


	status = acpi_evaluate_integer(priv->adev->handle, "_TMP",
				       NULL, &tmp);
	if (ACPI_FAILURE(status)) {
		status = acpi_evaluate_integer(priv->adev->handle, "PTYP",
				       NULL, &priv->type);
		if (ACPI_FAILURE(status)) {
			result = -EINVAL;
			goto err;
		}
	} else {
		priv->type = INT3403_TYPE_SENSOR;
	}

	platform_set_drvdata(pdev, priv);
	switch (priv->type) {
	case INT3403_TYPE_SENSOR:
		result = int3403_sensor_add(priv);
		break;
	case INT3403_TYPE_CHARGER:
	case INT3403_TYPE_BATTERY:
		result = int3403_cdev_add(priv);
		break;
	default:
		result = -EINVAL;
	}

	if (result)
		goto err;
	return result;

err:
	return result;
}

static void int3403_remove(struct platform_device *pdev)
{
	struct int3403_priv *priv = platform_get_drvdata(pdev);

	switch (priv->type) {
	case INT3403_TYPE_SENSOR:
		int3403_sensor_remove(priv);
		break;
	case INT3403_TYPE_CHARGER:
	case INT3403_TYPE_BATTERY:
		int3403_cdev_remove(priv);
		break;
	default:
		break;
	}
}

static const struct acpi_device_id int3403_device_ids[] = {
	{"INT3403", 0},
	{"INTC1043", 0},
	{"INTC1046", 0},
	{"INTC1062", 0},
	{"INTC1069", 0},
	{"INTC10A1", 0},
	{"", 0},
};
MODULE_DEVICE_TABLE(acpi, int3403_device_ids);

static struct platform_driver int3403_driver = {
	.probe = int3403_add,
	.remove_new = int3403_remove,
	.driver = {
		.name = "int3403 thermal",
		.acpi_match_table = int3403_device_ids,
	},
};

module_platform_driver(int3403_driver);

MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("ACPI INT3403 thermal driver");
Commit	Line	Data
2025cf9e	1	// SPDX-License-Identifier: GPL-2.0-only
4384b8fe LT	2	/*
	3	* ACPI INT3403 thermal driver
	4	* Copyright (c) 2013, Intel Corporation.
4384b8fe LT	5	*/
	6
	7	#include <linux/kernel.h>
	8	#include <linux/module.h>
	9	#include <linux/init.h>
	10	#include <linux/types.h>
	11	#include <linux/acpi.h>
	12	#include <linux/thermal.h>
	13	#include <linux/platform_device.h>
593df404	14	#include "int340x_thermal_zone.h"
4384b8fe LT	15
	16	#define INT3403_TYPE_SENSOR 0x03
	17	#define INT3403_TYPE_CHARGER 0x0B
	18	#define INT3403_TYPE_BATTERY 0x0C
	19	#define INT3403_PERF_CHANGED_EVENT 0x80
43720df9	20	#define INT3403_PERF_TRIP_POINT_CHANGED 0x81
4384b8fe LT	21	#define INT3403_THERMAL_EVENT 0x90
4384b8fe LT	22
593df404	23	/* Preserved structure for future expandbility */
4384b8fe	24	struct int3403_sensor {
593df404	25	struct int34x_thermal_zone *int340x_zone;
4384b8fe LT	26	};
4384b8fe LT	27
4384b8fe LT	28	struct int3403_cdev {
	29	struct thermal_cooling_device *cdev;
	30	unsigned long max_state;
	31	};
	32
	33	struct int3403_priv {
	34	struct platform_device *pdev;
	35	struct acpi_device *adev;
	36	unsigned long long type;
	37	void *priv;
	38	};
	39
4384b8fe LT	40	static void int3403_notify(acpi_handle handle,
	41	u32 event, void *data)
	42	{
	43	struct int3403_priv *priv = data;
	44	struct int3403_sensor *obj;
	45
	46	if (!priv)
	47	return;
	48
	49	obj = priv->priv;
	50	if (priv->type != INT3403_TYPE_SENSOR \|\| !obj)
	51	return;
	52
	53	switch (event) {
	54	case INT3403_PERF_CHANGED_EVENT:
	55	break;
	56	case INT3403_THERMAL_EVENT:
9176ae86 SP	57	int340x_thermal_zone_device_update(obj->int340x_zone,
9176ae86 SP	58	THERMAL_TRIP_VIOLATED);
4384b8fe	59	break;
43720df9	60	case INT3403_PERF_TRIP_POINT_CHANGED:
b1bf9dbf	61	int340x_thermal_update_trips(obj->int340x_zone);
43720df9 SP	62	int340x_thermal_zone_device_update(obj->int340x_zone,
	63	THERMAL_TRIP_CHANGED);
	64	break;
4384b8fe	65	default:
f3d7fb38	66	dev_dbg(&priv->pdev->dev, "Unsupported event [0x%x]\n", event);
4384b8fe LT	67	break;
	68	}
	69	}
	70
4384b8fe LT	71	static int int3403_sensor_add(struct int3403_priv *priv)
	72	{
	73	int result = 0;
4384b8fe	74	struct int3403_sensor *obj;
4384b8fe LT	75
	76	obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL);
	77	if (!obj)
	78	return -ENOMEM;
	79
	80	priv->priv = obj;
	81
593df404 SP	82	obj->int340x_zone = int340x_thermal_zone_add(priv->adev, NULL);
	83	if (IS_ERR(obj->int340x_zone))
	84	return PTR_ERR(obj->int340x_zone);
4384b8fe LT	85
	86	result = acpi_install_notify_handler(priv->adev->handle,
	87	ACPI_DEVICE_NOTIFY, int3403_notify,
	88	(void *)priv);
	89	if (result)
	90	goto err_free_obj;
	91
	92	return 0;
	93
	94	err_free_obj:
593df404	95	int340x_thermal_zone_remove(obj->int340x_zone);
4384b8fe LT	96	return result;
	97	}
	98
	99	static int int3403_sensor_remove(struct int3403_priv *priv)
	100	{
	101	struct int3403_sensor *obj = priv->priv;
	102
f8061d38 SP	103	acpi_remove_notify_handler(priv->adev->handle,
f8061d38 SP	104	ACPI_DEVICE_NOTIFY, int3403_notify);
593df404 SP	105	int340x_thermal_zone_remove(obj->int340x_zone);
593df404 SP	106
4384b8fe LT	107	return 0;
	108	}
	109
	110	/* INT3403 Cooling devices */
	111	static int int3403_get_max_state(struct thermal_cooling_device *cdev,
	112	unsigned long *state)
	113	{
	114	struct int3403_priv *priv = cdev->devdata;
	115	struct int3403_cdev *obj = priv->priv;
	116
	117	*state = obj->max_state;
	118	return 0;
	119	}
	120
	121	static int int3403_get_cur_state(struct thermal_cooling_device *cdev,
	122	unsigned long *state)
	123	{
	124	struct int3403_priv *priv = cdev->devdata;
	125	unsigned long long level;
	126	acpi_status status;
	127
	128	status = acpi_evaluate_integer(priv->adev->handle, "PPPC", NULL, &level);
	129	if (ACPI_SUCCESS(status)) {
	130	*state = level;
	131	return 0;
	132	} else
	133	return -EINVAL;
	134	}
	135
	136	static int
	137	int3403_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
	138	{
	139	struct int3403_priv *priv = cdev->devdata;
	140	acpi_status status;
	141
	142	status = acpi_execute_simple_method(priv->adev->handle, "SPPC", state);
	143	if (ACPI_SUCCESS(status))
	144	return 0;
	145	else
	146	return -EINVAL;
	147	}
	148
	149	static const struct thermal_cooling_device_ops int3403_cooling_ops = {
	150	.get_max_state = int3403_get_max_state,
	151	.get_cur_state = int3403_get_cur_state,
	152	.set_cur_state = int3403_set_cur_state,
	153	};
	154
	155	static int int3403_cdev_add(struct int3403_priv *priv)
	156	{
	157	int result = 0;
	158	acpi_status status;
	159	struct int3403_cdev *obj;
	160	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL };
	161	union acpi_object *p;
	162
	163	obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL);
	164	if (!obj)
	165	return -ENOMEM;
	166
	167	status = acpi_evaluate_object(priv->adev->handle, "PPSS", NULL, &buf);
	168	if (ACPI_FAILURE(status))
	169	return -ENODEV;
	170
171	p = buf.pointer;
172	if (!p \|\| (p->type != ACPI_TYPE_PACKAGE)) {
4c8a342c	173	pr_warn("Invalid PPSS data\n");
f01bc8f3	174	kfree(buf.pointer);
4384b8fe LT	175	return -EFAULT;
	176	}
	177
13b86f50	178	priv->priv = obj;
4384b8fe LT	179	obj->max_state = p->package.count - 1;
	180	obj->cdev =
	181	thermal_cooling_device_register(acpi_device_bid(priv->adev),
	182	priv, &int3403_cooling_ops);
	183	if (IS_ERR(obj->cdev))
	184	result = PTR_ERR(obj->cdev);
	185
f01bc8f3	186	kfree(buf.pointer);
4384b8fe LT	187	/* TODO: add ACPI notification support */
	188
	189	return result;
	190	}
	191
	192	static int int3403_cdev_remove(struct int3403_priv *priv)
	193	{
	194	struct int3403_cdev *obj = priv->priv;
	195
	196	thermal_cooling_device_unregister(obj->cdev);
	197	return 0;
	198	}
	199
	200	static int int3403_add(struct platform_device *pdev)
	201	{
	202	struct int3403_priv *priv;
	203	int result = 0;
6eb61a93	204	unsigned long long tmp;
4384b8fe LT	205	acpi_status status;
	206
	207	priv = devm_kzalloc(&pdev->dev, sizeof(struct int3403_priv),
	208	GFP_KERNEL);
	209	if (!priv)
	210	return -ENOMEM;
	211
	212	priv->pdev = pdev;
	213	priv->adev = ACPI_COMPANION(&(pdev->dev));
	214	if (!priv->adev) {
	215	result = -EINVAL;
	216	goto err;
	217	}
	218
4ca0e75e	219
6eb61a93 ZR	220	status = acpi_evaluate_integer(priv->adev->handle, "_TMP",
	221	NULL, &tmp);
	222	if (ACPI_FAILURE(status)) {
	223	status = acpi_evaluate_integer(priv->adev->handle, "PTYP",
	224	NULL, &priv->type);
4ca0e75e SP	225	if (ACPI_FAILURE(status)) {
	226	result = -EINVAL;
	227	goto err;
4ca0e75e	228	}
6eb61a93 ZR	229	} else {
6eb61a93 ZR	230	priv->type = INT3403_TYPE_SENSOR;
4384b8fe LT	231	}
	232
	233	platform_set_drvdata(pdev, priv);
	234	switch (priv->type) {
	235	case INT3403_TYPE_SENSOR:
	236	result = int3403_sensor_add(priv);
	237	break;
	238	case INT3403_TYPE_CHARGER:
	239	case INT3403_TYPE_BATTERY:
	240	result = int3403_cdev_add(priv);
	241	break;
	242	default:
	243	result = -EINVAL;
	244	}
	245
	246	if (result)
	247	goto err;
	248	return result;
	249
	250	err:
	251	return result;
	252	}
	253
25701083	254	static void int3403_remove(struct platform_device *pdev)
4384b8fe LT	255	{
	256	struct int3403_priv *priv = platform_get_drvdata(pdev);
	257
	258	switch (priv->type) {
	259	case INT3403_TYPE_SENSOR:
	260	int3403_sensor_remove(priv);
	261	break;
	262	case INT3403_TYPE_CHARGER:
	263	case INT3403_TYPE_BATTERY:
	264	int3403_cdev_remove(priv);
	265	break;
	266	default:
	267	break;
	268	}
4384b8fe LT	269	}
	270
	271	static const struct acpi_device_id int3403_device_ids[] = {
	272	{"INT3403", 0},
26d8bec1	273	{"INTC1043", 0},
67698880	274	{"INTC1046", 0},
657b95d3	275	{"INTC1062", 0},
79b510c4	276	{"INTC1069", 0},
a95be874	277	{"INTC10A1", 0},
4384b8fe LT	278	{"", 0},
	279	};
	280	MODULE_DEVICE_TABLE(acpi, int3403_device_ids);
	281
	282	static struct platform_driver int3403_driver = {
	283	.probe = int3403_add,
25701083	284	.remove_new = int3403_remove,
4384b8fe LT	285	.driver = {
4384b8fe LT	286	.name = "int3403 thermal",
4384b8fe LT	287	.acpi_match_table = int3403_device_ids,
	288	},
	289	};
	290
	291	module_platform_driver(int3403_driver);
	292
	293	MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
	294	MODULE_LICENSE("GPL v2");
	295	MODULE_DESCRIPTION("ACPI INT3403 thermal driver");