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path: root/drivers/net/wireless/ath/ath9k/recv.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/recv.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/recv.c215
1 files changed, 167 insertions, 48 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index c5b7cbe59bfa..4f52e0429f99 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -28,6 +28,33 @@ static inline bool ath_is_alt_ant_ratio_better(int alt_ratio, int 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:
+ 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 &&
@@ -572,6 +599,7 @@ static void ath_rx_ps_beacon(struct ath_softc *sc, struct sk_buff *skb)
ath_dbg(common, ATH_DBG_PS,
"Reconfigure Beacon timers based on timestamp from the AP\n");
ath_set_beacon(sc);
+ sc->ps_flags &= ~PS_TSFOOR_SYNC;
}
if (ath_beacon_dtim_pending_cab(skb)) {
@@ -916,7 +944,8 @@ static void ath9k_process_rssi(struct ath_common *common,
int last_rssi;
__le16 fc;
- if (ah->opmode != NL80211_IFTYPE_STATION)
+ if ((ah->opmode != NL80211_IFTYPE_STATION) &&
+ (ah->opmode != NL80211_IFTYPE_ADHOC))
return;
fc = hdr->frame_control;
@@ -1288,49 +1317,138 @@ static void ath_select_ant_div_from_quick_scan(struct ath_ant_comb *antcomb,
}
}
-static void ath_ant_div_conf_fast_divbias(struct ath_hw_antcomb_conf *ant_conf)
+static void ath_ant_div_conf_fast_divbias(struct ath_hw_antcomb_conf *ant_conf,
+ struct ath_ant_comb *antcomb, int alt_ratio)
{
- /* 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;
+ 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 == 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 */
@@ -1350,8 +1468,8 @@ static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
main_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_MAIN_SHIFT) &
ATH_ANT_RX_MASK;
- /* Record packet only when alt_rssi is positive */
- if (alt_rssi > 0) {
+ /* 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;
@@ -1411,7 +1529,9 @@ static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
}
if (!antcomb->scan) {
- if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) {
+ 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 =
@@ -1440,7 +1560,7 @@ static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
}
if ((alt_rssi_avg < (main_rssi_avg +
- ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA)))
+ div_ant_conf.lna1_lna2_delta)))
goto div_comb_done;
}
@@ -1554,8 +1674,7 @@ static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
antcomb->quick_scan_cnt++;
div_comb_done:
- ath_ant_div_conf_fast_divbias(&div_ant_conf);
-
+ 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;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 11:54:52 +0000