diff options
| author | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2009-05-22 00:44:23 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-05-22 22:06:03 +0400 |
| commit | 62161aefa403a3f8d603b061f5688cf00928a2cc (patch) | |
| tree | e4b6a51b9d25b2e068e299a972adb8b8fdd1367f /drivers/net/wireless/iwlwifi/iwl-5000-hw.h | |
| parent | 2681b20ba2a255ea20a168c0ebe519c40b55e57e (diff) | |
| download | linux-62161aefa403a3f8d603b061f5688cf00928a2cc.tar.xz | |
iwlwifi: Temperature sensor voltage reading for 5150
The temperature measurement by uCode for 5150 and 5000 are different
CSR_HW_REV_TYPE_5150: temperature sensor output voltage
CSR_HW_REV_TYPE_5000: temperature in Celsius
temperature related operation for 5150 is measured by temperature sensor
output voltage; additional conversion is required for set and store
the temperature.
To make sure support different HW design; implement _ops method for
temperature related functions (temperature reading and set ct kill
threshold)
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-5000-hw.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-5000-hw.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000-hw.h b/drivers/net/wireless/iwlwifi/iwl-5000-hw.h index 15cac70e36e2..4ef6804a455a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000-hw.h +++ b/drivers/net/wireless/iwlwifi/iwl-5000-hw.h @@ -87,6 +87,18 @@ #define IWL50_NUM_AMPDU_QUEUES 10 #define IWL50_FIRST_AMPDU_QUEUE 10 +/* 5150 only */ +#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF (-5) + +static inline s32 iwl_temp_calib_to_offset(struct iwl_priv *priv) +{ + u16 *temp_calib = (u16 *)iwl_eeprom_query_addr(priv, + EEPROM_5000_TEMPERATURE); + /* offset = temperature - voltage / coef */ + s32 offset = (s32)(temp_calib[0] - temp_calib[1] / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF); + return offset; +} + /* Fixed (non-configurable) rx data from phy */ /** |