linux/drivers/acpi/acpi_lpat.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * acpi_lpat.c - LPAT table processing functions
 *
 * Copyright (C) 2015 Intel Corporation. All rights reserved.
 */

#include <linux/export.h>
#include <linux/acpi.h>
#include <acpi/acpi_lpat.h>

/**
 * acpi_lpat_raw_to_temp(): Return temperature from raw value through
 * LPAT conversion table
 *
 * @lpat_table: the temperature_raw mapping table structure
 * @raw: the raw value, used as a key to get the temperature from the
 *       above mapping table
 *
 * A positive converted temperature value will be returned on success,
 * a negative errno will be returned in error cases.
 */
int acpi_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table,
			  int raw)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * acpi_lpat_temp_to_raw(): Return raw value from temperature through
 * LPAT conversion table
 *
 * @lpat_table: the temperature_raw mapping table
 * @temp: the temperature, used as a key to get the raw value from the
 *        above mapping table
 *
 * The raw value will be returned on success,
 * a negative errno will be returned in error cases.
 */
int acpi_lpat_temp_to_raw(struct acpi_lpat_conversion_table *lpat_table,
			  int temp)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * acpi_lpat_get_conversion_table(): Parse ACPI LPAT table if present.
 *
 * @handle: Handle to acpi device
 *
 * Parse LPAT table to a struct of type acpi_lpat_table. On success
 * it returns a pointer to newly allocated table. This table must
 * be freed by the caller when finished processing, using a call to
 * acpi_lpat_free_conversion_table.
 */
struct acpi_lpat_conversion_table *acpi_lpat_get_conversion_table(acpi_handle
								  handle)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * acpi_lpat_free_conversion_table(): Free LPAT table.
 *
 * @lpat_table: the temperature_raw mapping table structure
 *
 * Frees the LPAT table previously allocated by a call to
 * acpi_lpat_get_conversion_table.
 */
void acpi_lpat_free_conversion_table(struct acpi_lpat_conversion_table
				     *lpat_table)
{ … }
EXPORT_SYMBOL_GPL(…);