ath9k_hw: define antenna diversity group

AR9285 belongs to diversity group 0 and AR9485 belongs to diversity
group 2. Based on the diversity group we configure certain antenna
diversity paramaters such as lna1_lna2_delta and fast diversity
bias values. For AR9485 we have some gain table parameter which
selects the gain table 0/1 for main and alternate antenna

Cc: Gabriel Tseng <Gabriel.Tseng@Atheros.com>
Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com>
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 6 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9002_phy.c b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
index b4a0c1d3b115..a57e963cf0dc 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
@@ -529,6 +529,8 @@ static void ar9002_hw_antdiv_comb_conf_get(struct ath_hw *ah,
                                  AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
         antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
                                   AR_PHY_9285_FAST_DIV_BIAS_S;
+        antconf->lna1_lna2_delta = -3;
+        antconf->div_group = 0;
 }
 
 static void ar9002_hw_antdiv_comb_conf_set(struct ath_hw *ah,
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index d2a5d2737cd3..25f3c2fdf2bc 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -1196,6 +1196,8 @@ static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
                                  AR_PHY_9485_ANT_DIV_ALT_LNACONF_S;
         antconf->fast_div_bias = (regval & AR_PHY_9485_ANT_FAST_DIV_BIAS) >>
                                   AR_PHY_9485_ANT_FAST_DIV_BIAS_S;
+        antconf->lna1_lna2_delta = -9;
+        antconf->div_group = 2;
 }
 
 static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index f2f672bc5966..03b37d7be1c3 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -483,7 +483,6 @@ static inline void ath_deinit_leds(struct ath_softc *sc)
 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
 #define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20
 
-#define ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA -3
 #define ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA -1
 #define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
 #define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 80f512d1f975..7af2773d2bfc 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -482,6 +482,7 @@ struct ath_hw_antcomb_conf {
         u8 main_gaintb;
         u8 alt_gaintb;
         int lna1_lna2_delta;
+        u8 div_group;
 };
 
 /**
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 9fcd1e4f4504..85e05329a607 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -1442,7 +1442,7 @@ 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;
         }