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>

diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 6913a52..b908915 100644 (file)
--- 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 */