When WLAN enter full sleep mode, WLAN HW should send out a LNA_TAKE
message for BT to take control of the shared LNA. Otherwise BT traffic
is completely stopped whenever the wlan interface is moved full sleep
mode.
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_mci.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
index 867238f..6155837 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
@@ -1015,9 +1015,14 @@ void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force)
return;
if (mci->is_2g) {
- ar9003_mci_send_2g5g_status(ah, true);
+ if (!force) {
+ ar9003_mci_send_2g5g_status(ah, true);
- REG_SET_BIT(ah, AR_MCI_TX_CTRL,
+ ar9003_mci_send_lna_transfer(ah, true);
+ udelay(5);
+ }
+
+ REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
@@ -1025,6 +1030,11 @@ void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force)
if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
ar9003_mci_osla_setup(ah, true);
} else {
+ if (!force) {
+ ar9003_mci_send_lna_take(ah, true);
+ udelay(5);
+ }
+
REG_SET_BIT(ah, AR_MCI_TX_CTRL,
AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
@@ -1251,6 +1261,9 @@ void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah)
ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n");
+ ar9003_mci_send_lna_take(ah, true);
+ udelay(50);
+
REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
mci->is_2g = false;
mci->update_2g5g = true;
--
1.7.10.4
--
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