diff --git a/sys/dev/ath/ath_hal/ah.h b/sys/dev/ath/ath_hal/ah.h
index 85790e12101f..7bf284399d10 100644
--- a/sys/dev/ath/ath_hal/ah.h
+++ b/sys/dev/ath/ath_hal/ah.h
@@ -668,6 +668,41 @@ typedef struct {
 	uint32_t cur_seq;	/* current sequence number */
 } HAL_CHANNEL_SURVEY;
 
+/*
+ * ANI commands.
+ *
+ * These are used both internally and externally via the diagnostic
+ * API.
+ *
+ * Note that this is NOT the ANI commands being used via the INTMIT
+ * capability - that has a different mapping for some reason.
+ */
+typedef enum {
+	HAL_ANI_PRESENT = 0,			/* is ANI support present */
+	HAL_ANI_NOISE_IMMUNITY_LEVEL = 1,	/* set level */
+	HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION = 2,	/* enable/disable */
+	HAL_ANI_CCK_WEAK_SIGNAL_THR = 3,	/* enable/disable */
+	HAL_ANI_FIRSTEP_LEVEL = 4,		/* set level */
+	HAL_ANI_SPUR_IMMUNITY_LEVEL = 5,	/* set level */
+	HAL_ANI_MODE = 6,			/* 0 => manual, 1 => auto (XXX do not change) */
+	HAL_ANI_PHYERR_RESET = 7,		/* reset phy error stats */
+} HAL_ANI_CMD;
+
+/*
+ * This is the layout of the ANI INTMIT capability.
+ *
+ * Notice that the command values differ to HAL_ANI_CMD.
+ */
+typedef enum {
+	HAL_CAP_INTMIT_PRESENT = 0,
+	HAL_CAP_INTMIT_ENABLE = 1,
+	HAL_CAP_INTMIT_NOISE_IMMUNITY_LEVEL = 2,
+	HAL_CAP_INTMIT_OFDM_WEAK_SIGNAL_LEVEL = 3,
+	HAL_CAP_INTMIT_CCK_WEAK_SIGNAL_THR = 4,
+	HAL_CAP_INTMIT_FIRSTEP_LEVEL = 5,
+	HAL_CAP_INTMIT_SPUR_IMMUNITY_LEVEL = 6
+} HAL_CAP_INTMIT_CMD;
+
 /*
  * Hardware Access Layer (HAL) API.
  *
diff --git a/sys/dev/ath/ath_hal/ah_internal.h b/sys/dev/ath/ath_hal/ah_internal.h
index b9dce2567e12..b994eab268e8 100644
--- a/sys/dev/ath/ath_hal/ah_internal.h
+++ b/sys/dev/ath/ath_hal/ah_internal.h
@@ -418,23 +418,6 @@ extern	HAL_BOOL ath_hal_setTxQProps(struct ath_hal *ah,
 extern	HAL_BOOL ath_hal_getTxQProps(struct ath_hal *ah,
 		HAL_TXQ_INFO *qInfo, const HAL_TX_QUEUE_INFO *qi);
 
-/*
- * Internal HAL ANI commands.
- *
- * These values represent the ANI commands passed to the ANI Control method
- * for AR5212, AR5416 and later chipsets.
- */
-typedef enum {
-	HAL_ANI_PRESENT = 0,			/* is ANI support present */
-	HAL_ANI_NOISE_IMMUNITY_LEVEL = 1,	/* set level */
-	HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION = 2,	/* enable/disable */
-	HAL_ANI_CCK_WEAK_SIGNAL_THR = 3,	/* enable/disable */
-	HAL_ANI_FIRSTEP_LEVEL = 4,		/* set level */
-	HAL_ANI_SPUR_IMMUNITY_LEVEL = 5,	/* set level */
-	HAL_ANI_MODE = 6,			/* 0 => manual, 1 => auto (XXX do not change) */
-	HAL_ANI_PHYERR_RESET = 7,		/* reset phy error stats */
-} HAL_ANI_CMD;
-
 #define	HAL_SPUR_VAL_MASK		0x3FFF
 #define	HAL_SPUR_CHAN_WIDTH		87
 #define	HAL_BIN_WIDTH_BASE_100HZ	3125
diff --git a/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c b/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c
index d5b96a591493..518d0791a311 100644
--- a/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c
+++ b/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c
@@ -880,16 +880,16 @@ ar5212GetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
 		return HAL_OK;
 	case HAL_CAP_INTMIT:		/* interference mitigation */
 		switch (capability) {
-		case 0:			/* hardware capability */
+		case HAL_CAP_INTMIT_PRESENT:		/* hardware capability */
 			return HAL_OK;
-		case 1:
+		case HAL_CAP_INTMIT_ENABLE:
 			return (ahp->ah_procPhyErr & HAL_ANI_ENA) ?
 				HAL_OK : HAL_ENXIO;
-		case 2:			/* HAL_ANI_NOISE_IMMUNITY_LEVEL */
-		case 3:			/* HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION */
-		case 4:			/* HAL_ANI_CCK_WEAK_SIGNAL_THR */
-		case 5:			/* HAL_ANI_FIRSTEP_LEVEL */
-		case 6:			/* HAL_ANI_SPUR_IMMUNITY_LEVEL */
+		case HAL_CAP_INTMIT_NOISE_IMMUNITY_LEVEL:
+		case HAL_CAP_INTMIT_OFDM_WEAK_SIGNAL_LEVEL:
+		case HAL_CAP_INTMIT_CCK_WEAK_SIGNAL_THR:
+		case HAL_CAP_INTMIT_FIRSTEP_LEVEL:
+		case HAL_CAP_INTMIT_SPUR_IMMUNITY_LEVEL:
 			ani = ar5212AniGetCurrentState(ah);
 			if (ani == AH_NULL)
 				return HAL_ENXIO;
@@ -980,6 +980,8 @@ ar5212SetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
 		OS_REG_WRITE(ah, AR_TPC, ahp->ah_macTPC);
 		return AH_TRUE;
 	case HAL_CAP_INTMIT: {		/* interference mitigation */
+		/* This maps the public ANI commands to the internal ANI commands */
+		/* Private: HAL_ANI_CMD; Public: HAL_CAP_INTMIT_CMD */
 		static const HAL_ANI_CMD cmds[] = {
 			HAL_ANI_PRESENT,
 			HAL_ANI_MODE,
diff --git a/sys/dev/ath/if_athvar.h b/sys/dev/ath/if_athvar.h
index 26a50bc5d65a..6353847a72f5 100644
--- a/sys/dev/ath/if_athvar.h
+++ b/sys/dev/ath/if_athvar.h
@@ -634,11 +634,11 @@ void	ath_intr(void *);
 #define	ath_hal_settpcts(_ah, _tpcts) \
 	ath_hal_setcapability(_ah, HAL_CAP_TPC_CTS, 0, _tpcts, NULL)
 #define	ath_hal_hasintmit(_ah) \
-	(ath_hal_getcapability(_ah, HAL_CAP_INTMIT, 0, NULL) == HAL_OK)
+	(ath_hal_getcapability(_ah, HAL_CAP_INTMIT, HAL_CAP_INTMIT_PRESENT, NULL) == HAL_OK)
 #define	ath_hal_getintmit(_ah) \
-	(ath_hal_getcapability(_ah, HAL_CAP_INTMIT, 1, NULL) == HAL_OK)
+	(ath_hal_getcapability(_ah, HAL_CAP_INTMIT, HAL_CAP_INTMIT_ENABLE, NULL) == HAL_OK)
 #define	ath_hal_setintmit(_ah, _v) \
-	ath_hal_setcapability(_ah, HAL_CAP_INTMIT, 1, _v, NULL)
+	ath_hal_setcapability(_ah, HAL_CAP_INTMIT, HAL_CAP_INTMIT_ENABLE, _v, NULL)
 #define	ath_hal_getchannoise(_ah, _c) \
 	((*(_ah)->ah_getChanNoise)((_ah), (_c)))
 #define	ath_hal_getrxchainmask(_ah, _prxchainmask) \