Author: adrian
Date: Sat May 28 02:14:24 2016
New Revision: 300896
URL: https://svnweb.freebsd.org/changeset/base/300896

Log:
  [ath] add WB335 btcoex for initial testing.
  
  This is like the WB222 coexistence (ie, "MCI", a message bus inside the
  chip), and it's currently a cut/paste so I can start using it to flesh
  out the differences with WB222.
  
  It doesn't completely /do/ bluetooth coexistence, because it turns out
  I need to add some contigmalloc'ed buffers to the btcoex path for this
  type of hardware.  I'm putting this work in the "people would like
  to see functioning-ish btcoex before FreeBSD-11" bucket because I see
  this as "broken".
  
  Tested:
  
  * QCA9535 (WB335) NIC, BT + 2GHz STA

Modified:
  head/sys/dev/ath/if_ath_btcoex.c

Modified: head/sys/dev/ath/if_ath_btcoex.c
==============================================================================
--- head/sys/dev/ath/if_ath_btcoex.c    Sat May 28 00:38:17 2016        
(r300895)
+++ head/sys/dev/ath/if_ath_btcoex.c    Sat May 28 02:14:24 2016        
(r300896)
@@ -252,7 +252,69 @@ ath_btcoex_cfg_wb222(struct ath_softc *s
        return (0);
 }
 
+/*
+ * Initial QCA9565 / (WB335B) bluetooth coexistence settings,
+ * just for experimentation.
+ *
+ * Return 0 for OK; errno for error.
+ */
+static int
+ath_btcoex_cfg_wb335b(struct ath_softc *sc)
+{
+       HAL_BT_COEX_INFO btinfo;
+       HAL_BT_COEX_CONFIG btconfig;
+       struct ath_hal *ah = sc->sc_ah;
+
+       if (! ath_hal_btcoex_supported(ah))
+               return (EINVAL);
+
+       bzero(&btinfo, sizeof(btinfo));
+       bzero(&btconfig, sizeof(btconfig));
+
+       device_printf(sc->sc_dev, "Enabling WB335B BTCOEX\n");
 
+       btinfo.bt_module = HAL_BT_MODULE_JANUS; /* XXX not used? */
+       btinfo.bt_coex_config = HAL_BT_COEX_CFG_MCI;
+
+       /*
+        * MCI uses a completely different interface to speak
+        * to the bluetooth module - it's a command based
+        * thing over a serial line, rather than
+        * state pins to/from the bluetooth module.
+        *
+        * So, the GPIO configuration, polarity, etc
+        * doesn't matter on MCI devices; it's just
+        * completely ignored by the HAL.
+        */
+       btinfo.bt_gpio_bt_active = 4;
+       btinfo.bt_gpio_bt_priority = 8;
+       btinfo.bt_gpio_wlan_active = 5;
+
+       btinfo.bt_active_polarity = 1;  /* XXX not used */
+       btinfo.bt_single_ant = 0;       /* 2 antenna on WB335 */
+       btinfo.bt_isolation = 0;        /* in dB, not used */
+
+       ath_hal_btcoex_set_info(ah, &btinfo);
+
+       btconfig.bt_time_extend = 0;
+       btconfig.bt_txstate_extend = 1; /* true */
+       btconfig.bt_txframe_extend = 1; /* true */
+       btconfig.bt_mode = HAL_BT_COEX_MODE_SLOTTED;
+       btconfig.bt_quiet_collision = 1;        /* true */
+       btconfig.bt_rxclear_polarity = 1;       /* true */
+       btconfig.bt_priority_time = 2;
+       btconfig.bt_first_slot_time = 5;
+       btconfig.bt_hold_rxclear = 1;   /* true */
+
+       ath_hal_btcoex_set_config(ah, &btconfig);
+
+       /*
+        * Enable antenna diversity.
+        */
+       ath_hal_btcoex_set_parameter(ah, HAL_BT_COEX_ANTENNA_DIVERSITY, 1);
+
+       return (0);
+}
 
 
 #if 0
@@ -313,6 +375,8 @@ ath_btcoex_attach(struct ath_softc *sc)
                ret = ath_btcoex_cfg_wb222(sc);
        } else if (strncmp(profname, "wb225", 5) == 0) {
                ret = ath_btcoex_cfg_wb225(sc);
+       } else if (strncmp(profname, "wb335", 5) == 0) {
+               ret = ath_btcoex_cfg_wb335b(sc);
        } else {
                return (0);
        }
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