ath9k_htc: Add support for bluetooth coexistence.

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

1 files changed, 37 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 2d4279191d7a..695e2b088d10 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -41,6 +41,8 @@ MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
         .max_power = 20, \
 }
 
+#define ATH_HTC_BTCOEX_PRODUCT_ID "wb193"
+
 static struct ieee80211_channel ath9k_2ghz_channels[] = {
         CHAN2G(2412, 0), /* Channel 1 */
         CHAN2G(2417, 1), /* Channel 2 */
@@ -605,7 +607,31 @@ static void ath9k_init_misc(struct ath9k_htc_priv *priv)
         priv->ah->opmode = NL80211_IFTYPE_STATION;
 }
 
-static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
+static void ath9k_init_btcoex(struct ath9k_htc_priv *priv)
+{
+        int qnum;
+
+        switch (priv->ah->btcoex_hw.scheme) {
+        case ATH_BTCOEX_CFG_NONE:
+                break;
+        case ATH_BTCOEX_CFG_3WIRE:
+                priv->ah->btcoex_hw.btactive_gpio = 7;
+                priv->ah->btcoex_hw.btpriority_gpio = 6;
+                priv->ah->btcoex_hw.wlanactive_gpio = 8;
+                priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
+                ath9k_hw_btcoex_init_3wire(priv->ah);
+                ath_htc_init_btcoex_work(priv);
+                qnum = priv->hwq_map[WME_AC_BE];
+                ath9k_hw_init_btcoex_hw(priv->ah, qnum);
+                break;
+        default:
+                WARN_ON(1);
+                break;
+        }
+}
+
+static int ath9k_init_priv(struct ath9k_htc_priv *priv,
+                           u16 devid, char *product)
 {
         struct ath_hw *ah = NULL;
         struct ath_common *common;
@@ -672,6 +698,11 @@ static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
         ath9k_init_channels_rates(priv);
         ath9k_init_misc(priv);
 
+        if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
+                ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
+                ath9k_init_btcoex(priv);
+        }
+
         return 0;
 
 err_queues:
@@ -734,7 +765,8 @@ static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
         SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
 }
 
-static int ath9k_init_device(struct ath9k_htc_priv *priv, u16 devid)
+static int ath9k_init_device(struct ath9k_htc_priv *priv,
+                             u16 devid, char *product)
 {
         struct ieee80211_hw *hw = priv->hw;
         struct ath_common *common;
@@ -743,7 +775,7 @@ static int ath9k_init_device(struct ath9k_htc_priv *priv, u16 devid)
         struct ath_regulatory *reg;
 
         /* Bring up device */
-        error = ath9k_init_priv(priv, devid);
+        error = ath9k_init_priv(priv, devid, product);
         if (error != 0)
                 goto err_init;
 
@@ -801,7 +833,7 @@ err_init:
 }
 
 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
-                           u16 devid)
+                           u16 devid, char *product)
 {
         struct ieee80211_hw *hw;
         struct ath9k_htc_priv *priv;
@@ -835,7 +867,7 @@ int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
         /* The device may have been unplugged earlier. */
         priv->op_flags &= ~OP_UNPLUGGED;
 
-        ret = ath9k_init_device(priv, devid);
+        ret = ath9k_init_device(priv, devid, product);
         if (ret)
                 goto err_init;