qcacmn: Add api to set intermediate EP vote access

Add api to set intermediate EP vote access state.
Make sure reg work handler is complete before setting
intermediate vote access.

Change-Id: Ib229d9af8b1e58505a9ae5fbf39aa912ca21a3c3
CRs-Fixed: 2994040

hif/inc/hif.h

@@ -48,7 +48,7 @@ typedef void __iomem *A_target_id_t;
 typedef void *hif_handle_t;
 
 #if defined(HIF_IPCI) && defined(FEATURE_HAL_DELAYED_REG_WRITE)
-#define HIF_WORK_DRAIN_WAIT_CNT 10
+#define HIF_WORK_DRAIN_WAIT_CNT 50
 #endif
 
 #define HIF_TYPE_AR6002   2
@@ -1738,6 +1738,7 @@ hif_softc_to_hif_opaque_softc(struct hif_softc *hif_handle)
 
 #if defined(HIF_IPCI) && defined(FEATURE_HAL_DELAYED_REG_WRITE)
 QDF_STATUS hif_try_prevent_ep_vote_access(struct hif_opaque_softc *hif_ctx);
+void hif_set_ep_intermediate_vote_access(struct hif_opaque_softc *hif_ctx);
 void hif_allow_ep_vote_access(struct hif_opaque_softc *hif_ctx);
 void hif_set_ep_vote_access(struct hif_opaque_softc *hif_ctx,
 			    uint8_t type, uint8_t access);
@@ -1750,6 +1751,11 @@ hif_try_prevent_ep_vote_access(struct hif_opaque_softc *hif_ctx)
 	return QDF_STATUS_SUCCESS;
 }
 
+static inline void
+hif_set_ep_intermediate_vote_access(struct hif_opaque_softc *hif_ctx)
+{
+}
+
 static inline void
 hif_allow_ep_vote_access(struct hif_opaque_softc *hif_ctx)
 {

hif/src/hif_main.c

@@ -1059,12 +1059,30 @@ QDF_STATUS hif_try_prevent_ep_vote_access(struct hif_opaque_softc *hif_ctx)
 			hif_err("timeout wait for pending work %d ", work);
 			return QDF_STATUS_E_FAULT;
 		}
-		qdf_sleep(5);
+		qdf_sleep(10);
 	}
 
 	return QDF_STATUS_SUCCESS;
 }
 
+void hif_set_ep_intermediate_vote_access(struct hif_opaque_softc *hif_ctx)
+{
+	struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx);
+	uint8_t vote_access;
+
+	vote_access = qdf_atomic_read(&scn->ep_vote_access);
+
+	if (vote_access != HIF_EP_VOTE_ACCESS_DISABLE)
+		hif_info("EP vote changed from:%u to intermediate state",
+			 vote_access);
+
+	if (QDF_IS_STATUS_ERROR(hif_try_prevent_ep_vote_access(hif_ctx)))
+		QDF_BUG(0);
+
+	qdf_atomic_set(&scn->ep_vote_access,
+		       HIF_EP_VOTE_INTERMEDIATE_ACCESS);
+}
+
 void hif_allow_ep_vote_access(struct hif_opaque_softc *hif_ctx)
 {
 	struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx);