diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/recv.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/recv.c | 740 |
1 files changed, 0 insertions, 740 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 611be4f934e..c2f5fd1c8b8 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -20,43 +20,6 @@ #define SKB_CB_ATHBUF(__skb) (*((struct ath_buf **)__skb->cb)) -static inline bool ath_is_alt_ant_ratio_better(int alt_ratio, int maxdelta, - int mindelta, int main_rssi_avg, - int alt_rssi_avg, int pkt_count) -{ - return (((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) && - (alt_rssi_avg > main_rssi_avg + maxdelta)) || - (alt_rssi_avg > main_rssi_avg + mindelta)) && (pkt_count > 50); -} - -static inline bool ath_ant_div_comb_alt_check(u8 div_group, int alt_ratio, - int curr_main_set, int curr_alt_set, - int alt_rssi_avg, int main_rssi_avg) -{ - bool result = false; - switch (div_group) { - case 0: - if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) - result = true; - break; - case 1: - case 2: - if ((((curr_main_set == ATH_ANT_DIV_COMB_LNA2) && - (curr_alt_set == ATH_ANT_DIV_COMB_LNA1) && - (alt_rssi_avg >= (main_rssi_avg - 5))) || - ((curr_main_set == ATH_ANT_DIV_COMB_LNA1) && - (curr_alt_set == ATH_ANT_DIV_COMB_LNA2) && - (alt_rssi_avg >= (main_rssi_avg - 2)))) && - (alt_rssi_avg >= 4)) - result = true; - else - result = false; - break; - } - - return result; -} - static inline bool ath9k_check_auto_sleep(struct ath_softc *sc) { return sc->ps_enabled && @@ -1067,709 +1030,6 @@ static void ath9k_rx_skb_postprocess(struct ath_common *common, rxs->flag &= ~RX_FLAG_DECRYPTED; } -static void ath_lnaconf_alt_good_scan(struct ath_ant_comb *antcomb, - struct ath_hw_antcomb_conf ant_conf, - int main_rssi_avg) -{ - antcomb->quick_scan_cnt = 0; - - if (ant_conf.main_lna_conf == ATH_ANT_DIV_COMB_LNA2) - antcomb->rssi_lna2 = main_rssi_avg; - else if (ant_conf.main_lna_conf == ATH_ANT_DIV_COMB_LNA1) - antcomb->rssi_lna1 = main_rssi_avg; - - switch ((ant_conf.main_lna_conf << 4) | ant_conf.alt_lna_conf) { - case 0x10: /* LNA2 A-B */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA1; - break; - case 0x20: /* LNA1 A-B */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA2; - break; - case 0x21: /* LNA1 LNA2 */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA2; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->second_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - break; - case 0x12: /* LNA2 LNA1 */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->second_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - break; - case 0x13: /* LNA2 A+B */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA1; - break; - case 0x23: /* LNA1 A+B */ - antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - antcomb->first_quick_scan_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA2; - break; - default: - break; - } -} - -static void ath_select_ant_div_from_quick_scan(struct ath_ant_comb *antcomb, - struct ath_hw_antcomb_conf *div_ant_conf, - int main_rssi_avg, int alt_rssi_avg, - int alt_ratio) -{ - /* alt_good */ - switch (antcomb->quick_scan_cnt) { - case 0: - /* set alt to main, and alt to first conf */ - div_ant_conf->main_lna_conf = antcomb->main_conf; - div_ant_conf->alt_lna_conf = antcomb->first_quick_scan_conf; - break; - case 1: - /* set alt to main, and alt to first conf */ - div_ant_conf->main_lna_conf = antcomb->main_conf; - div_ant_conf->alt_lna_conf = antcomb->second_quick_scan_conf; - antcomb->rssi_first = main_rssi_avg; - antcomb->rssi_second = alt_rssi_avg; - - if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) { - /* main is LNA1 */ - if (ath_is_alt_ant_ratio_better(alt_ratio, - ATH_ANT_DIV_COMB_LNA1_DELTA_HI, - ATH_ANT_DIV_COMB_LNA1_DELTA_LOW, - main_rssi_avg, alt_rssi_avg, - antcomb->total_pkt_count)) - antcomb->first_ratio = true; - else - antcomb->first_ratio = false; - } else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2) { - if (ath_is_alt_ant_ratio_better(alt_ratio, - ATH_ANT_DIV_COMB_LNA1_DELTA_MID, - ATH_ANT_DIV_COMB_LNA1_DELTA_LOW, - main_rssi_avg, alt_rssi_avg, - antcomb->total_pkt_count)) - antcomb->first_ratio = true; - else - antcomb->first_ratio = false; - } else { - if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) && - (alt_rssi_avg > main_rssi_avg + - ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) || - (alt_rssi_avg > main_rssi_avg)) && - (antcomb->total_pkt_count > 50)) - antcomb->first_ratio = true; - else - antcomb->first_ratio = false; - } - break; - case 2: - antcomb->alt_good = false; - antcomb->scan_not_start = false; - antcomb->scan = false; - antcomb->rssi_first = main_rssi_avg; - antcomb->rssi_third = alt_rssi_avg; - - if (antcomb->second_quick_scan_conf == ATH_ANT_DIV_COMB_LNA1) - antcomb->rssi_lna1 = alt_rssi_avg; - else if (antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA2) - antcomb->rssi_lna2 = alt_rssi_avg; - else if (antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2) { - if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2) - antcomb->rssi_lna2 = main_rssi_avg; - else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) - antcomb->rssi_lna1 = main_rssi_avg; - } - - if (antcomb->rssi_lna2 > antcomb->rssi_lna1 + - ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA) - div_ant_conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA2; - else - div_ant_conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA1; - - if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) { - if (ath_is_alt_ant_ratio_better(alt_ratio, - ATH_ANT_DIV_COMB_LNA1_DELTA_HI, - ATH_ANT_DIV_COMB_LNA1_DELTA_LOW, - main_rssi_avg, alt_rssi_avg, - antcomb->total_pkt_count)) - antcomb->second_ratio = true; - else - antcomb->second_ratio = false; - } else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2) { - if (ath_is_alt_ant_ratio_better(alt_ratio, - ATH_ANT_DIV_COMB_LNA1_DELTA_MID, - ATH_ANT_DIV_COMB_LNA1_DELTA_LOW, - main_rssi_avg, alt_rssi_avg, - antcomb->total_pkt_count)) - antcomb->second_ratio = true; - else - antcomb->second_ratio = false; - } else { - if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) && - (alt_rssi_avg > main_rssi_avg + - ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) || - (alt_rssi_avg > main_rssi_avg)) && - (antcomb->total_pkt_count > 50)) - antcomb->second_ratio = true; - else - antcomb->second_ratio = false; - } - - /* set alt to the conf with maximun ratio */ - if (antcomb->first_ratio && antcomb->second_ratio) { - if (antcomb->rssi_second > antcomb->rssi_third) { - /* first alt*/ - if ((antcomb->first_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA1) || - (antcomb->first_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA2)) - /* Set alt LNA1 or LNA2*/ - if (div_ant_conf->main_lna_conf == - ATH_ANT_DIV_COMB_LNA2) - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - else - /* Set alt to A+B or A-B */ - div_ant_conf->alt_lna_conf = - antcomb->first_quick_scan_conf; - } else if ((antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA1) || - (antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA2)) { - /* Set alt LNA1 or LNA2 */ - if (div_ant_conf->main_lna_conf == - ATH_ANT_DIV_COMB_LNA2) - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - } else { - /* Set alt to A+B or A-B */ - div_ant_conf->alt_lna_conf = - antcomb->second_quick_scan_conf; - } - } else if (antcomb->first_ratio) { - /* first alt */ - if ((antcomb->first_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA1) || - (antcomb->first_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA2)) - /* Set alt LNA1 or LNA2 */ - if (div_ant_conf->main_lna_conf == - ATH_ANT_DIV_COMB_LNA2) - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - else - /* Set alt to A+B or A-B */ - div_ant_conf->alt_lna_conf = - antcomb->first_quick_scan_conf; - } else if (antcomb->second_ratio) { - /* second alt */ - if ((antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA1) || - (antcomb->second_quick_scan_conf == - ATH_ANT_DIV_COMB_LNA2)) - /* Set alt LNA1 or LNA2 */ - if (div_ant_conf->main_lna_conf == - ATH_ANT_DIV_COMB_LNA2) - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - else - /* Set alt to A+B or A-B */ - div_ant_conf->alt_lna_conf = - antcomb->second_quick_scan_conf; - } else { - /* main is largest */ - if ((antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) || - (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2)) - /* Set alt LNA1 or LNA2 */ - if (div_ant_conf->main_lna_conf == - ATH_ANT_DIV_COMB_LNA2) - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else - div_ant_conf->alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - else - /* Set alt to A+B or A-B */ - div_ant_conf->alt_lna_conf = antcomb->main_conf; - } - break; - default: - break; - } -} - -static void ath_ant_div_conf_fast_divbias(struct ath_hw_antcomb_conf *ant_conf, - struct ath_ant_comb *antcomb, int alt_ratio) -{ - if (ant_conf->div_group == 0) { - /* Adjust the fast_div_bias based on main and alt lna conf */ - switch ((ant_conf->main_lna_conf << 4) | - ant_conf->alt_lna_conf) { - case 0x01: /* A-B LNA2 */ - ant_conf->fast_div_bias = 0x3b; - break; - case 0x02: /* A-B LNA1 */ - ant_conf->fast_div_bias = 0x3d; - break; - case 0x03: /* A-B A+B */ - ant_conf->fast_div_bias = 0x1; - break; - case 0x10: /* LNA2 A-B */ - ant_conf->fast_div_bias = 0x7; - break; - case 0x12: /* LNA2 LNA1 */ - ant_conf->fast_div_bias = 0x2; - break; - case 0x13: /* LNA2 A+B */ - ant_conf->fast_div_bias = 0x7; - break; - case 0x20: /* LNA1 A-B */ - ant_conf->fast_div_bias = 0x6; - break; - case 0x21: /* LNA1 LNA2 */ - ant_conf->fast_div_bias = 0x0; - break; - case 0x23: /* LNA1 A+B */ - ant_conf->fast_div_bias = 0x6; - break; - case 0x30: /* A+B A-B */ - ant_conf->fast_div_bias = 0x1; - break; - case 0x31: /* A+B LNA2 */ - ant_conf->fast_div_bias = 0x3b; - break; - case 0x32: /* A+B LNA1 */ - ant_conf->fast_div_bias = 0x3d; - break; - default: - break; - } - } else if (ant_conf->div_group == 1) { - /* Adjust the fast_div_bias based on main and alt_lna_conf */ - switch ((ant_conf->main_lna_conf << 4) | - ant_conf->alt_lna_conf) { - case 0x01: /* A-B LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x02: /* A-B LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x03: /* A-B A+B */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x10: /* LNA2 A-B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x3f; - else - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x12: /* LNA2 LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x13: /* LNA2 A+B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x3f; - else - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x20: /* LNA1 A-B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x3f; - else - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x21: /* LNA1 LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x23: /* LNA1 A+B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x3f; - else - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x30: /* A+B A-B */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x31: /* A+B LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x32: /* A+B LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - default: - break; - } - } else if (ant_conf->div_group == 2) { - /* Adjust the fast_div_bias based on main and alt_lna_conf */ - switch ((ant_conf->main_lna_conf << 4) | - ant_conf->alt_lna_conf) { - case 0x01: /* A-B LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x02: /* A-B LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x03: /* A-B A+B */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x10: /* LNA2 A-B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x1; - else - ant_conf->fast_div_bias = 0x2; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x12: /* LNA2 LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x13: /* LNA2 A+B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x1; - else - ant_conf->fast_div_bias = 0x2; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x20: /* LNA1 A-B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x1; - else - ant_conf->fast_div_bias = 0x2; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x21: /* LNA1 LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x23: /* LNA1 A+B */ - if (!(antcomb->scan) && - (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) - ant_conf->fast_div_bias = 0x1; - else - ant_conf->fast_div_bias = 0x2; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x30: /* A+B A-B */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x31: /* A+B LNA2 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - case 0x32: /* A+B LNA1 */ - ant_conf->fast_div_bias = 0x1; - ant_conf->main_gaintb = 0; - ant_conf->alt_gaintb = 0; - break; - default: - break; - } - } -} - -/* Antenna diversity and combining */ -static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs) -{ - struct ath_hw_antcomb_conf div_ant_conf; - struct ath_ant_comb *antcomb = &sc->ant_comb; - int alt_ratio = 0, alt_rssi_avg = 0, main_rssi_avg = 0, curr_alt_set; - int curr_main_set; - int main_rssi = rs->rs_rssi_ctl0; - int alt_rssi = rs->rs_rssi_ctl1; - int rx_ant_conf, main_ant_conf; - bool short_scan = false; - - rx_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_CURRENT_SHIFT) & - ATH_ANT_RX_MASK; - main_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_MAIN_SHIFT) & - ATH_ANT_RX_MASK; - - /* Record packet only when both main_rssi and alt_rssi is positive */ - if (main_rssi > 0 && alt_rssi > 0) { - antcomb->total_pkt_count++; - antcomb->main_total_rssi += main_rssi; - antcomb->alt_total_rssi += alt_rssi; - if (main_ant_conf == rx_ant_conf) - antcomb->main_recv_cnt++; - else - antcomb->alt_recv_cnt++; - } - - /* Short scan check */ - if (antcomb->scan && antcomb->alt_good) { - if (time_after(jiffies, antcomb->scan_start_time + - msecs_to_jiffies(ATH_ANT_DIV_COMB_SHORT_SCAN_INTR))) - short_scan = true; - else - if (antcomb->total_pkt_count == - ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT) { - alt_ratio = ((antcomb->alt_recv_cnt * 100) / - antcomb->total_pkt_count); - if (alt_ratio < ATH_ANT_DIV_COMB_ALT_ANT_RATIO) - short_scan = true; - } - } - - if (((antcomb->total_pkt_count < ATH_ANT_DIV_COMB_MAX_PKTCOUNT) || - rs->rs_moreaggr) && !short_scan) - return; - - if (antcomb->total_pkt_count) { - alt_ratio = ((antcomb->alt_recv_cnt * 100) / - antcomb->total_pkt_count); - main_rssi_avg = (antcomb->main_total_rssi / - antcomb->total_pkt_count); - alt_rssi_avg = (antcomb->alt_total_rssi / - antcomb->total_pkt_count); - } - - - ath9k_hw_antdiv_comb_conf_get(sc->sc_ah, &div_ant_conf); - curr_alt_set = div_ant_conf.alt_lna_conf; - curr_main_set = div_ant_conf.main_lna_conf; - - antcomb->count++; - - if (antcomb->count == ATH_ANT_DIV_COMB_MAX_COUNT) { - if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) { - ath_lnaconf_alt_good_scan(antcomb, div_ant_conf, - main_rssi_avg); - antcomb->alt_good = true; - } else { - antcomb->alt_good = false; - } - - antcomb->count = 0; - antcomb->scan = true; - antcomb->scan_not_start = true; - } - - if (!antcomb->scan) { - if (ath_ant_div_comb_alt_check(div_ant_conf.div_group, - alt_ratio, curr_main_set, curr_alt_set, - alt_rssi_avg, main_rssi_avg)) { - if (curr_alt_set == ATH_ANT_DIV_COMB_LNA2) { - /* Switch main and alt LNA */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - } else if (curr_alt_set == ATH_ANT_DIV_COMB_LNA1) { - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - } - - goto div_comb_done; - } else if ((curr_alt_set != ATH_ANT_DIV_COMB_LNA1) && - (curr_alt_set != ATH_ANT_DIV_COMB_LNA2)) { - /* Set alt to another LNA */ - if (curr_main_set == ATH_ANT_DIV_COMB_LNA2) - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - else if (curr_main_set == ATH_ANT_DIV_COMB_LNA1) - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - - goto div_comb_done; - } - - if ((alt_rssi_avg < (main_rssi_avg + - div_ant_conf.lna1_lna2_delta))) - goto div_comb_done; - } - - if (!antcomb->scan_not_start) { - switch (curr_alt_set) { - case ATH_ANT_DIV_COMB_LNA2: - antcomb->rssi_lna2 = alt_rssi_avg; - antcomb->rssi_lna1 = main_rssi_avg; - antcomb->scan = true; - /* set to A+B */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - break; - case ATH_ANT_DIV_COMB_LNA1: - antcomb->rssi_lna1 = alt_rssi_avg; - antcomb->rssi_lna2 = main_rssi_avg; - antcomb->scan = true; - /* set to A+B */ - div_ant_conf.main_lna_conf = ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - break; - case ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2: - antcomb->rssi_add = alt_rssi_avg; - antcomb->scan = true; - /* set to A-B */ - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - break; - case ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2: - antcomb->rssi_sub = alt_rssi_avg; - antcomb->scan = false; - if (antcomb->rssi_lna2 > - (antcomb->rssi_lna1 + - ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA)) { - /* use LNA2 as main LNA */ - if ((antcomb->rssi_add > antcomb->rssi_lna1) && - (antcomb->rssi_add > antcomb->rssi_sub)) { - /* set to A+B */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - } else if (antcomb->rssi_sub > - antcomb->rssi_lna1) { - /* set to A-B */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - } else { - /* set to LNA1 */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - } - } else { - /* use LNA1 as main LNA */ - if ((antcomb->rssi_add > antcomb->rssi_lna2) && - (antcomb->rssi_add > antcomb->rssi_sub)) { - /* set to A+B */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2; - } else if (antcomb->rssi_sub > - antcomb->rssi_lna1) { - /* set to A-B */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2; - } else { - /* set to LNA2 */ - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - } - } - break; - default: - break; - } - } else { - if (!antcomb->alt_good) { - antcomb->scan_not_start = false; - /* Set alt to another LNA */ - if (curr_main_set == ATH_ANT_DIV_COMB_LNA2) { - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - } else if (curr_main_set == ATH_ANT_DIV_COMB_LNA1) { - div_ant_conf.main_lna_conf = - ATH_ANT_DIV_COMB_LNA1; - div_ant_conf.alt_lna_conf = - ATH_ANT_DIV_COMB_LNA2; - } - goto div_comb_done; - } - } - - ath_select_ant_div_from_quick_scan(antcomb, &div_ant_conf, - main_rssi_avg, alt_rssi_avg, - alt_ratio); - - antcomb->quick_scan_cnt++; - -div_comb_done: - ath_ant_div_conf_fast_divbias(&div_ant_conf, antcomb, alt_ratio); - ath9k_hw_antdiv_comb_conf_set(sc->sc_ah, &div_ant_conf); - - antcomb->scan_start_time = jiffies; - antcomb->total_pkt_count = 0; - antcomb->main_total_rssi = 0; - antcomb->alt_total_rssi = 0; - antcomb->main_recv_cnt = 0; - antcomb->alt_recv_cnt = 0; -} - int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) { struct ath_buf *bf; |