[linux-2.6-block.git] / drivers / thermal / int340x_thermal / int3402_thermal.c

/*
 * INT3402 thermal driver for memory temperature reporting
 *
 * Copyright (C) 2014, Intel Corporation
 * Authors: Aaron Lu <aaron.lu@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 "int340x_thermal_zone.h"

struct int3402_thermal_data {
	acpi_handle *handle;
	struct int34x_thermal_zone *int340x_zone;
};

static int int3402_thermal_probe(struct platform_device *pdev)
{
	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
	struct int3402_thermal_data *d;

	if (!acpi_has_method(adev->handle, "_TMP"))
		return -ENODEV;

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

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

	d->handle = adev->handle;
	platform_set_drvdata(pdev, d);

	return 0;
}

static int int3402_thermal_remove(struct platform_device *pdev)
{
	struct int3402_thermal_data *d = platform_get_drvdata(pdev);

	int340x_thermal_zone_remove(d->int340x_zone);

	return 0;
}

static const struct acpi_device_id int3402_thermal_match[] = {
	{"INT3402", 0},
	{}
};

MODULE_DEVICE_TABLE(acpi, int3402_thermal_match);

static struct platform_driver int3402_thermal_driver = {
	.probe = int3402_thermal_probe,
	.remove = int3402_thermal_remove,
	.driver = {
		   .name = "int3402 thermal",
		   .acpi_match_table = int3402_thermal_match,
		   },
};

module_platform_driver(int3402_thermal_driver);

MODULE_DESCRIPTION("INT3402 Thermal driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
77e337c6 AL	1	/*
	2	* INT3402 thermal driver for memory temperature reporting
	3	*
	4	* Copyright (C) 2014, Intel Corporation
	5	* Authors: Aaron Lu <aaron.lu@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>
	16	#include <linux/thermal.h>
820cdeba	17	#include "int340x_thermal_zone.h"
77e337c6 AL	18
77e337c6 AL	19	struct int3402_thermal_data {
77e337c6	20	acpi_handle *handle;
820cdeba	21	struct int34x_thermal_zone *int340x_zone;
77e337c6 AL	22	};
77e337c6 AL	23
77e337c6 AL	24	static int int3402_thermal_probe(struct platform_device *pdev)
	25	{
	26	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
	27	struct int3402_thermal_data *d;
77e337c6 AL	28
	29	if (!acpi_has_method(adev->handle, "_TMP"))
	30	return -ENODEV;
	31
	32	d = devm_kzalloc(&pdev->dev, sizeof(*d), GFP_KERNEL);
	33	if (!d)
	34	return -ENOMEM;
	35
820cdeba SP	36	d->int340x_zone = int340x_thermal_zone_add(adev, NULL);
	37	if (IS_ERR(d->int340x_zone))
	38	return PTR_ERR(d->int340x_zone);
	39
	40	d->handle = adev->handle;
	41	platform_set_drvdata(pdev, d);
77e337c6 AL	42
	43	return 0;
	44	}
	45
	46	static int int3402_thermal_remove(struct platform_device *pdev)
	47	{
820cdeba SP	48	struct int3402_thermal_data *d = platform_get_drvdata(pdev);
	49
	50	int340x_thermal_zone_remove(d->int340x_zone);
77e337c6	51
77e337c6 AL	52	return 0;
	53	}
	54
	55	static const struct acpi_device_id int3402_thermal_match[] = {
	56	{"INT3402", 0},
	57	{}
	58	};
	59
	60	MODULE_DEVICE_TABLE(acpi, int3402_thermal_match);
	61
	62	static struct platform_driver int3402_thermal_driver = {
	63	.probe = int3402_thermal_probe,
	64	.remove = int3402_thermal_remove,
	65	.driver = {
	66	.name = "int3402 thermal",
77e337c6 AL	67	.acpi_match_table = int3402_thermal_match,
	68	},
	69	};
	70
	71	module_platform_driver(int3402_thermal_driver);
	72
	73	MODULE_DESCRIPTION("INT3402 Thermal driver");
	74	MODULE_LICENSE("GPL");