ath9k_hw: Add support for btcoexistence in AR9300.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 75 insertions, 14 deletions

diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c
index 71e9e4841fa2..23f15a7ca7f1 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.c
+++ b/drivers/net/wireless/ath/ath9k/btcoex.c
@@ -51,6 +51,10 @@ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)
                 .bt_hold_rx_clear = true,
         };
         u32 i;
+        bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;
+
+        if (AR_SREV_9300_20_OR_LATER(ah))
+                rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;
 
         btcoex_hw->bt_coex_mode =
                 (btcoex_hw->bt_coex_mode & AR_BT_QCU_THRESH) |
@@ -59,7 +63,7 @@ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)
                 SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) |
                 SM(ath_bt_config.bt_mode, AR_BT_MODE) |
                 SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) |
-                SM(ath_bt_config.bt_rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) |
+                SM(rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) |
                 SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) |
                 SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) |
                 SM(qnum, AR_BT_QCU_THRESH);
@@ -142,6 +146,7 @@ void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
 }
 EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);
 
+
 static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
 {
         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
@@ -152,9 +157,22 @@ static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
          * enable coex 3-wire
          */
         REG_WRITE(ah, AR_BT_COEX_MODE, btcoex_hw->bt_coex_mode);
-        REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex_hw->bt_coex_weights);
         REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex_hw->bt_coex_mode2);
 
+
+        if (AR_SREV_9300_20_OR_LATER(ah)) {
+                REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, ah->bt_coex_wlan_weight[0]);
+                REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, ah->bt_coex_wlan_weight[1]);
+                REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS0, ah->bt_coex_bt_weight[0]);
+                REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS1, ah->bt_coex_bt_weight[1]);
+                REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS2, ah->bt_coex_bt_weight[2]);
+                REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS3, ah->bt_coex_bt_weight[3]);
+
+        } else
+                REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex_hw->bt_coex_weights);
+
+
+
         if (AR_SREV_9271(ah)) {
                 val = REG_READ(ah, 0x50040);
                 val &= 0xFFFFFEFF;
@@ -202,8 +220,18 @@ void ath9k_hw_btcoex_disable(struct ath_hw *ah)
 
         if (btcoex_hw->scheme == ATH_BTCOEX_CFG_3WIRE) {
                 REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE);
-                REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
                 REG_WRITE(ah, AR_BT_COEX_MODE2, 0);
+
+                if (AR_SREV_9300_20_OR_LATER(ah)) {
+                        REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, 0);
+                        REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, 0);
+                        REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS0, 0);
+                        REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS1, 0);
+                        REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS2, 0);
+                        REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS3, 0);
+                } else
+                        REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
+
         }
 
         ah->btcoex_hw.enabled = false;
diff --git a/drivers/net/wireless/ath/ath9k/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h
index aac8fae50813..a9efca83d676 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.h
+++ b/drivers/net/wireless/ath/ath9k/btcoex.h
@@ -19,9 +19,13 @@
 
 #include "hw.h"
 
-#define ATH_WLANACTIVE_GPIO     5
-#define ATH_BTACTIVE_GPIO       6
-#define ATH_BTPRIORITY_GPIO     7
+#define ATH_WLANACTIVE_GPIO_9280     5
+#define ATH_BTACTIVE_GPIO_9280       6
+#define ATH_BTPRIORITY_GPIO_9285     7
+
+#define ATH_WLANACTIVE_GPIO_9300     5
+#define ATH_BTACTIVE_GPIO_9300       4
+#define ATH_BTPRIORITY_GPIO_9300     8
 
 #define ATH_BTCOEX_DEF_BT_PERIOD  45
 #define ATH_BTCOEX_DEF_DUTY_CYCLE 55
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index e99e319feaa8..58f3d4210338 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1956,15 +1956,23 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
         else
                 pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
 
-        if (AR_SREV_9280_20_OR_LATER(ah) && common->btcoex_enabled) {
-                btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO;
-                btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO;
-
-                if (AR_SREV_9285(ah)) {
+        if (common->btcoex_enabled) {
+                if (AR_SREV_9300_20_OR_LATER(ah)) {
                         btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
-                        btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO;
-                } else {
-                        btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
+                        btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
+                        btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
+                        btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300;
+                } else if (AR_SREV_9280_20_OR_LATER(ah)) {
+                        btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280;
+                        btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280;
+
+                        if (AR_SREV_9285(ah)) {
+                                btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
+                                btcoex_hw->btpriority_gpio =
+                                                ATH_BTPRIORITY_GPIO_9285;
+                        } else {
+                                btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
+                        }
                 }
         } else {
                 btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 6a028bd67116..34ed1bd0e855 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -56,6 +56,9 @@
 #define AT9285_COEX3WIRE_SA_SUBSYSID    0x30aa
 #define AT9285_COEX3WIRE_DA_SUBSYSID    0x30ab
 
+#define AR9300_NUM_BT_WEIGHTS   4
+#define AR9300_NUM_WLAN_WEIGHTS 4
+
 #define ATH_AMPDU_LIMIT_MAX        (64 * 1024 - 1)
 
 #define ATH_DEFAULT_NOISE_FLOOR -95
@@ -772,6 +775,8 @@ struct ath_hw {
 
         /* Bluetooth coexistance */
         struct ath_btcoex_hw btcoex_hw;
+        u32 bt_coex_bt_weight[AR9300_NUM_BT_WEIGHTS];
+        u32 bt_coex_wlan_weight[AR9300_NUM_WLAN_WEIGHTS];
 
         u32 intr_txqs;
         u8 txchainmask;
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index d5cecdc6ca6e..456f3ec20fef 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1709,6 +1709,22 @@ enum {
 #define AR_BTCOEX_WL_WGHT          0xffff0000
 #define AR_BTCOEX_WL_WGHT_S        16
 
+#define AR_BT_COEX_WL_WEIGHTS0     0x8174
+#define AR_BT_COEX_WL_WEIGHTS1     0x81c4
+
+#define AR_BT_COEX_BT_WEIGHTS0     0x83ac
+#define AR_BT_COEX_BT_WEIGHTS1     0x83b0
+#define AR_BT_COEX_BT_WEIGHTS2     0x83b4
+#define AR_BT_COEX_BT_WEIGHTS3     0x83b8
+
+#define AR9300_BT_WGHT                     0xcccc4444
+#define AR9300_STOMP_ALL_WLAN_WGHT0        0xfffffff0
+#define AR9300_STOMP_ALL_WLAN_WGHT1        0xfffffff0
+#define AR9300_STOMP_LOW_WLAN_WGHT0        0x88888880
+#define AR9300_STOMP_LOW_WLAN_WGHT1        0x88888880
+#define AR9300_STOMP_NONE_WLAN_WGHT0       0x00000000
+#define AR9300_STOMP_NONE_WLAN_WGHT1       0x00000000
+
 #define AR_BT_COEX_MODE2           0x817c
 #define AR_BT_BCN_MISS_THRESH      0x000000ff
 #define AR_BT_BCN_MISS_THRESH_S    0