drivers/net/wireless/iwlwifi/iwl-5000-hw.h

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *    notice, this list of conditions and the following disclaimer.
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 *****************************************************************************/
/*
 * Please use this file (iwl-5000-hw.h) only for hardware-related definitions.
 * Use iwl-commands.h for uCode API definitions.
 */

#ifndef __iwl_5000_hw_h__
#define __iwl_5000_hw_h__

/* 5150 only */
#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF	(-5)

static inline s32 iwl_temp_calib_to_offset(struct iwl_priv *priv)
{
	u16 temperature, voltage;
	__le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(priv,
				EEPROM_KELVIN_TEMPERATURE);

	temperature = le16_to_cpu(temp_calib[0]);
	voltage = le16_to_cpu(temp_calib[1]);

	/* offset = temp - volt / coeff */
	return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
}

#endif /* __iwl_5000_hw_h__ */