WLAN driver initialization is muting BT which is terminating
the ongoing BT traffic. The reason to mute BT is to avoid any
incoming MCI messages from BT when MCI reset is in progress that
could corrupt WLAN MCI RX state machine. But we should not
dedicate radio completely to WLAN in driver init itself. So this
patch removes the wlan weightage changes from mute BT to retain
BT connection.
Signed-off-by: Rajkumar Manoharan <[email protected]>
---
drivers/net/wireless/ath/ath9k/ar9003_mci.c | 4 ----
drivers/net/wireless/ath/ath9k/reg.h | 4 ----
2 files changed, 8 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
index cc2853a..867238f 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
@@ -767,10 +767,6 @@ static void ar9003_mci_mute_bt(struct ath_hw *ah)
{
/* disable all MCI messages */
REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
- REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS0, 0xffffffff);
- REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS1, 0xffffffff);
- REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS2, 0xffffffff);
- REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS3, 0xffffffff);
REG_SET_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
/* wait pending HW messages to flush out */
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 75acefb..5046b28 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -2162,10 +2162,6 @@ enum {
#define AR_BTCOEX_CTRL_SPDT_POLARITY 0x80000000
#define AR_BTCOEX_CTRL_SPDT_POLARITY_S 31
-#define AR_BTCOEX_WL_WEIGHTS0 0x18b0
-#define AR_BTCOEX_WL_WEIGHTS1 0x18b4
-#define AR_BTCOEX_WL_WEIGHTS2 0x18b8
-#define AR_BTCOEX_WL_WEIGHTS3 0x18bc
#define AR_BTCOEX_MAX_TXPWR(_x) (0x18c0 + ((_x) << 2))
#define AR_BTCOEX_WL_LNA 0x1940
#define AR_BTCOEX_RFGAIN_CTRL 0x1944
--
1.7.10.4
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 <[email protected]>
---
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
Signed-off-by: Rajkumar Manoharan <[email protected]>
---
drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h b/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
index 8f406ff..bbf48918a 100644
--- a/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
+++ b/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
@@ -61,7 +61,7 @@ static const u32 ar9462_2p0_baseband_postamble[][5] = {
{0x00009e44, 0x62321e27, 0x62321e27, 0xfe291e27, 0xfe291e27},
{0x00009e48, 0x5030201a, 0x5030201a, 0x50302012, 0x50302012},
{0x00009fc8, 0x0003f000, 0x0003f000, 0x0001a000, 0x0001a000},
- {0x0000a204, 0x013187c0, 0x013187c4, 0x013187c4, 0x013187c0},
+ {0x0000a204, 0x01318fc0, 0x01318fc4, 0x01318fc4, 0x01318fc0},
{0x0000a208, 0x00000104, 0x00000104, 0x00000004, 0x00000004},
{0x0000a22c, 0x01026a2f, 0x01026a27, 0x01026a2f, 0x01026a2f},
{0x0000a230, 0x0000400a, 0x00004014, 0x00004016, 0x0000400b},
--
1.7.10.4
During driver stop, btcoex is disabled and also btcoex_hw.enabled
is set to false. Afterwards mci_is_enabled returns false so that
BT is not gaining SPDT control on WLAN sleep. Fix that.
Signed-off-by: Rajkumar Manoharan <[email protected]>
---
drivers/net/wireless/ath/ath9k/hw.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 03d5909..934ea40 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -1038,7 +1038,8 @@ static inline bool ath9k_hw_btcoex_is_enabled(struct ath_hw *ah)
}
static inline bool ath9k_hw_mci_is_enabled(struct ath_hw *ah)
{
- return ah->btcoex_hw.enabled && (ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
+ return ah->common.btcoex_enabled &&
+ (ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
}
void ath9k_hw_btcoex_enable(struct ath_hw *ah);
--
1.7.10.4