diff options
| author | Nick Kossifidis <mick@madwifi-project.org> | 2009-04-30 19:55:45 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-05-06 19:14:55 (GMT) |
| commit | cd417519086b223562b50c364d7beab12ef4c62c (patch) | |
| tree | 08cdb0c168bbbd1e000604fd9ee81289efcc2763 | |
| parent | a082381044ce026e83dbd17f8837722b028fc07d (diff) | |
| download | linux-cd417519086b223562b50c364d7beab12ef4c62c.tar.xz | |
ath5k: Read Spur channels from EEPROM
* 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>
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/eeprom.c | 37 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/eeprom.h | 20 |
2 files changed, 56 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c index c85429d..587c5b8 100644 --- a/drivers/net/wireless/ath/ath5k/eeprom.c +++ b/drivers/net/wireless/ath/ath5k/eeprom.c @@ -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; } diff --git a/drivers/net/wireless/ath/ath5k/eeprom.h b/drivers/net/wireless/ath/ath5k/eeprom.h index b0c0606..df9ffa0 100644 --- a/drivers/net/wireless/ath/ath5k/eeprom.h +++ b/drivers/net/wireless/ath/ath5k/eeprom.h @@ -211,6 +211,23 @@ #define AR5K_EEPROM_I_GAIN 10 #define AR5K_EEPROM_CCK_OFDM_DELTA 15 #define AR5K_EEPROM_N_IQ_CAL 2 +/* 5GHz/2GHz */ +enum ath5k_eeprom_freq_bands{ + AR5K_EEPROM_BAND_5GHZ = 0, + AR5K_EEPROM_BAND_2GHZ = 1, + AR5K_EEPROM_N_FREQ_BANDS, +}; +/* Spur chans per freq band */ +#define AR5K_EEPROM_N_SPUR_CHANS 5 +/* fbin value for chan 2464 x2 */ +#define AR5K_EEPROM_5413_SPUR_CHAN_1 1640 +/* fbin value for chan 2420 x2 */ +#define AR5K_EEPROM_5413_SPUR_CHAN_2 1200 +#define AR5K_EEPROM_SPUR_CHAN_MASK 0x3FFF +#define AR5K_EEPROM_NO_SPUR 0x8000 +#define AR5K_SPUR_CHAN_WIDTH 87 +#define AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz 3125 +#define AR5K_SPUR_SYMBOL_WIDTH_TURBO_100Hz 6250 #define AR5K_EEPROM_READ(_o, _v) do { \ ret = ath5k_hw_eeprom_read(ah, (_o), &(_v)); \ @@ -436,6 +453,9 @@ struct ath5k_eeprom_info { s8 ee_pga_desired_size_turbo[AR5K_EEPROM_N_MODES]; s8 ee_pd_gain_overlap; + /* Spur mitigation data (fbin values for spur channels) */ + u16 ee_spur_chans[AR5K_EEPROM_N_SPUR_CHANS][AR5K_EEPROM_N_FREQ_BANDS]; + u32 ee_antenna[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX]; }; |