release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/wireless/iwlwifi/iwl-5000-hw.h

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   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
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   8  * Copyright(c) 2007 - 2010 Intel Corporation. All rights reserved.
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  17  * General Public License for more details.
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  25  * in the file called LICENSE.GPL.
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
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  62  *****************************************************************************/
  63 /*
  64  * Please use this file (iwl-5000-hw.h) only for hardware-related definitions.
  65  * Use iwl-5000-commands.h for uCode API definitions.
  66  */
  67
  68 #ifndef __iwl_5000_hw_h__
  69 #define __iwl_5000_hw_h__
  70
  71 /* 5150 only */
  72 #define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF   (-5)
  73
  74 static inline s32 iwl_temp_calib_to_offset(struct iwl_priv *priv)
  75 {
  76         u16 temperature, voltage;
  77         __le16 *temp_calib =
  78                 (__le16 *)iwl_eeprom_query_addr(priv, EEPROM_5000_TEMPERATURE);
  79
  80         temperature = le16_to_cpu(temp_calib[0]);
  81         voltage = le16_to_cpu(temp_calib[1]);
  82
  83         /* offset = temp - volt / coeff */
  84         return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
  85 }
  86
  87 #endif /* __iwl_5000_hw_h__ */