ath9k: Add antenna diversity tweak for CUS198
This improves RX diversity and performance for AR9485.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index abdc7ee..a6846ab 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3825,6 +3825,11 @@
else
value = ar9003_hw_atten_chain_get_margin(ah, i, chan);
+ if (ah->config.alt_mingainidx)
+ REG_RMW_FIELD(ah, AR_PHY_EXT_ATTEN_CTL_0,
+ AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN,
+ value);
+
REG_RMW_FIELD(ah, ext_atten_reg[i],
AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN,
value);
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.h b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
index 23c019d..6fd7523 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
@@ -148,6 +148,8 @@
#define AR_PHY_SFCORR_SPUR_SUBCHNL_SD_S 28
#define AR_PHY_EXT_CCA_THRESH62 0x007F0000
#define AR_PHY_EXT_CCA_THRESH62_S 16
+#define AR_PHY_EXTCHN_PWRTHR1_ANT_DIV_ALT_ANT_MINGAINIDX 0x0000FF00
+#define AR_PHY_EXTCHN_PWRTHR1_ANT_DIV_ALT_ANT_MINGAINIDX_S 8
#define AR_PHY_EXT_MINCCA_PWR 0x01FF0000
#define AR_PHY_EXT_MINCCA_PWR_S 16
#define AR_PHY_EXT_CYCPWR_THR1 0x0000FE00L
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 64ff8e6..fa543a6 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -314,6 +314,7 @@
u32 xlna_gpio;
u32 ant_ctrl_comm2g_switch_enable;
bool xatten_margin_cfg;
+ bool alt_mingainidx;
};
enum ath9k_int {
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index abf1eb5..19b46c7 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -534,6 +534,7 @@
ATH9K_PCI_CUS230)) {
ah->config.xlna_gpio = 9;
ah->config.xatten_margin_cfg = true;
+ ah->config.alt_mingainidx = true;
ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88;
sc->ant_comb.low_rssi_thresh = 20;
sc->ant_comb.fast_div_bias = 3;