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ath5k: Read Spur channels from EEPROM

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* Read Spur channel information from EEPROM and use default channels
 for RF5413 compatible chips that don't have this info on EEPROM.

 Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
 Signed-off-by: Bob Copeland <me@bobcopeland.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis
2009-04-30 15:55:45 -04:00
committed by John W. Linville
parent a082381044
commit cd41751908
2 changed files with 56 additions and 1 deletions
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37
drivers/net/wireless/ath/ath5k/eeprom.c
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@@ -1694,9 +1694,40 @@ ath5k_eeprom_read_ctl_info(struct ath5k_hw *ah)
return 0;
}
static int
ath5k_eeprom_read_spur_chans(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 offset;
u16 val;
int ret = 0, i;
offset = AR5K_EEPROM_CTL(ee->ee_version) +
AR5K_EEPROM_N_CTLS(ee->ee_version);
if (ee->ee_version < AR5K_EEPROM_VERSION_5_3) {
/* No spur info for 5GHz */
ee->ee_spur_chans[0][0] = AR5K_EEPROM_NO_SPUR;
/* 2 channels for 2GHz (2464/2420) */
ee->ee_spur_chans[0][1] = AR5K_EEPROM_5413_SPUR_CHAN_1;
ee->ee_spur_chans[1][1] = AR5K_EEPROM_5413_SPUR_CHAN_2;
ee->ee_spur_chans[2][1] = AR5K_EEPROM_NO_SPUR;
} else if (ee->ee_version >= AR5K_EEPROM_VERSION_5_3) {
for (i = 0; i < AR5K_EEPROM_N_SPUR_CHANS; i++) {
AR5K_EEPROM_READ(offset, val);
ee->ee_spur_chans[i][0] = val;
AR5K_EEPROM_READ(offset + AR5K_EEPROM_N_SPUR_CHANS,
val);
ee->ee_spur_chans[i][1] = val;
offset++;
}
}
return ret;
}
/*
* Initialize eeprom power tables
* Initialize eeprom data structure
*/
int
ath5k_eeprom_init(struct ath5k_hw *ah)
@@ -1719,6 +1750,10 @@ ath5k_eeprom_init(struct ath5k_hw *ah)
if (err < 0)
return err;
err = ath5k_eeprom_read_spur_chans(ah);
if (err < 0)
return err;
return 0;
}