diff options
| author | Nick Kossifidis <mickflemm@gmail.com> | 2010-11-23 21:28:15 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-11-30 13:53:23 -0500 |
| commit | a2677fe4298c61f0e93c063e59815bf21c530c4a (patch) | |
| tree | a0248b1aee28ab1b7a532a1d477845e0a4066a9a /drivers/net/wireless/ath/ath5k/phy.c | |
| parent | b2b4c69f682a2868411899a77842061dd745884f (diff) | |
ath5k: Update spur mitigation filter for turbo/half/quarter
* Add spur mitigation filter support for half/quarter and turbo.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/phy.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/phy.c | 53 |
1 files changed, 32 insertions, 21 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c index 6913a52cecc..b9089151e7d 100644 --- a/drivers/net/wireless/ath/ath5k/phy.c +++ b/drivers/net/wireless/ath/ath5k/phy.c @@ -1622,7 +1622,7 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah, spur_chan_fbin = AR5K_EEPROM_NO_SPUR; spur_detection_window = AR5K_SPUR_CHAN_WIDTH; /* XXX: Half/Quarter channels ?*/ - if (channel->hw_value & CHANNEL_TURBO) + if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) spur_detection_window *= 2; for (i = 0; i < AR5K_EEPROM_N_SPUR_CHANS; i++) { @@ -1651,32 +1651,43 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah, * Calculate deltas: * spur_freq_sigma_delta -> spur_offset / sample_freq << 21 * spur_delta_phase -> spur_offset / chip_freq << 11 - * Note: Both values have 100KHz resolution + * Note: Both values have 100Hz resolution */ - /* XXX: Half/Quarter rate channels ? */ - switch (channel->hw_value) { - case CHANNEL_A: - /* Both sample_freq and chip_freq are 40MHz */ - spur_delta_phase = (spur_offset << 17) / 25; - spur_freq_sigma_delta = (spur_delta_phase >> 10); - symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz; - break; - case CHANNEL_G: - /* sample_freq -> 40MHz chip_freq -> 44MHz - * (for b compatibility) */ - spur_freq_sigma_delta = (spur_offset << 8) / 55; - spur_delta_phase = (spur_offset << 17) / 25; - symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz; - break; - case CHANNEL_T: - case CHANNEL_TG: + switch (ah->ah_bwmode) { + case AR5K_BWMODE_40MHZ: /* Both sample_freq and chip_freq are 80MHz */ spur_delta_phase = (spur_offset << 16) / 25; spur_freq_sigma_delta = (spur_delta_phase >> 10); - symbol_width = AR5K_SPUR_SYMBOL_WIDTH_TURBO_100Hz; + symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz * 2; break; + case AR5K_BWMODE_10MHZ: + /* Both sample_freq and chip_freq are 20MHz (?) */ + spur_delta_phase = (spur_offset << 18) / 25; + spur_freq_sigma_delta = (spur_delta_phase >> 10); + symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 2; + case AR5K_BWMODE_5MHZ: + /* Both sample_freq and chip_freq are 10MHz (?) */ + spur_delta_phase = (spur_offset << 19) / 25; + spur_freq_sigma_delta = (spur_delta_phase >> 10); + symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 4; default: - return; + if (channel->hw_value == CHANNEL_A) { + /* Both sample_freq and chip_freq are 40MHz */ + spur_delta_phase = (spur_offset << 17) / 25; + spur_freq_sigma_delta = + (spur_delta_phase >> 10); + symbol_width = + AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz; + } else { + /* sample_freq -> 40MHz chip_freq -> 44MHz + * (for b compatibility) */ + spur_delta_phase = (spur_offset << 17) / 25; + spur_freq_sigma_delta = + (spur_offset << 8) / 55; + symbol_width = + AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz; + } + break; } /* Calculate pilot and magnitude masks */ |