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authorNick Kossifidis <mickflemm@gmail.com>2010-11-23 21:28:15 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-11-30 13:53:23 -0500
commita2677fe4298c61f0e93c063e59815bf21c530c4a (patch)
treea0248b1aee28ab1b7a532a1d477845e0a4066a9a /drivers/net/wireless/ath/ath5k/phy.c
parentb2b4c69f682a2868411899a77842061dd745884f (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.c53
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 */