diff options
| author | Bob Copeland <me@bobcopeland.com> | 2009-10-14 14:16:30 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-10-27 16:48:18 -0400 |
| commit | e5e2647fd6ceef2cdc479954b84517535eb7febd (patch) | |
| tree | f0b22db14bae1881ea5cb4a9c6825192ac4a6afc /drivers/net/wireless/ath/ath5k/reg.h | |
| parent | e307fcf0a10f9c0c21b3d8b2ff7862b29796cc7f (diff) | |
ath5k: use noise calibration from madwifi hal
This updates ath5k to calibrate the noise floor similar to the
way it is done in the madwifi hal and ath9k. Of note:
- we start NF measurement at the same time as AGC calibration,
but do not actually read the value until the periodic (long)
calibration
- we keep a history of the last few values read and write the
median back to the hardware for CCA
- we do not complain if NF calibration isn't complete, instead
we keep the last read value.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/reg.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/reg.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath5k/reg.h b/drivers/net/wireless/ath/ath5k/reg.h index 64227abe3c2..4cb9c5df9f4 100644 --- a/drivers/net/wireless/ath/ath5k/reg.h +++ b/drivers/net/wireless/ath/ath5k/reg.h @@ -2033,17 +2033,14 @@ #define AR5K_PHY_AGCCTL_NF_NOUPDATE 0x00020000 /* Don't update nf automaticaly */ /* - * PHY noise floor status register + * PHY noise floor status register (CCA = Clear Channel Assessment) */ #define AR5K_PHY_NF 0x9864 /* Register address */ -#define AR5K_PHY_NF_M 0x000001ff /* Noise floor mask */ -#define AR5K_PHY_NF_ACTIVE 0x00000100 /* Noise floor calibration still active */ -#define AR5K_PHY_NF_RVAL(_n) (((_n) >> 19) & AR5K_PHY_NF_M) -#define AR5K_PHY_NF_AVAL(_n) (-((_n) ^ AR5K_PHY_NF_M) + 1) -#define AR5K_PHY_NF_SVAL(_n) (((_n) & AR5K_PHY_NF_M) | (1 << 9)) +#define AR5K_PHY_NF_M 0x000001ff /* Noise floor, written to hardware in 1/2 dBm units */ +#define AR5K_PHY_NF_SVAL(_n) (((_n) & AR5K_PHY_NF_M) | (1 << 9)) #define AR5K_PHY_NF_THRESH62 0x0007f000 /* Thresh62 -check ANI patent- (field) */ #define AR5K_PHY_NF_THRESH62_S 12 -#define AR5K_PHY_NF_MINCCA_PWR 0x0ff80000 /* ??? */ +#define AR5K_PHY_NF_MINCCA_PWR 0x0ff80000 /* Minimum measured noise level, read from hardware in 1 dBm units */ #define AR5K_PHY_NF_MINCCA_PWR_S 19 /* |