qcacld-3.0: Add bearer switch WMI interface changes

When there are more than one audio transport mediums
are available, there is a possibility to switch the
audio transport medium from one medium to another
medium.
To provide this support to switch the audio transport
medium, and to indicate the status of the bearer
switch to fw, add WMI interface changes.

Change-Id: I236e2d9a954191c104d56d286332ace644190e6e
CRs-Fixed: 3653962

components/target_if/sap/ll_sap/inc/target_if_ll_sap.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * DOC: contains ll_lt_sap declarations specific to the bearer
+ * switch functionalities
+ */
+#include "wlan_ll_sap_public_structs.h"
+
+/**
+ * target_if_ll_sap_register_tx_ops() - register ll_lt_sap tx ops
+ * @tx_ops: pointer to ll_sap tx ops
+ *
+ * Return: None
+ */
+void target_if_ll_sap_register_tx_ops(struct wlan_ll_sap_tx_ops *tx_ops);
+
+/**
+ * target_if_ll_sap_register_rx_ops() - register ll_lt_sap rx ops
+ * @rx_ops: pointer to ll_sap rx ops
+ *
+ * Return: None
+ */
+void target_if_ll_sap_register_rx_ops(struct wlan_ll_sap_rx_ops *rx_ops);
+
+/**
+ * target_if_ll_sap_register_events() - register ll_lt_sap fw event handlers
+ * @psoc: pointer to psoc
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS target_if_ll_sap_register_events(struct wlan_objmgr_psoc *psoc);
+
+/**
+ * target_if_ll_sap_deregister_events() - deregister ll_lt_sap fw event handlers
+ * @psoc: pointer to psoc
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS
+target_if_ll_sap_deregister_events(struct wlan_objmgr_psoc *psoc);
+

components/target_if/sap/ll_sap/src/target_if_ll_sap.c

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "target_if.h"
+#include "target_if_ll_sap.h"
+#include "wlan_ll_sap_public_structs.h"
+#include "wmi_unified_ll_sap_api.h"
+#include "../../umac/mlme/sap/ll_sap/core/src/wlan_ll_sap_main.h"
+#include "wlan_ll_sap_api.h"
+
+/**
+ * target_if_send_audio_transport_switch_resp() - Send audio transport switch
+ * response to fw
+ * @psoc: pointer to psoc
+ * @req_type: Bearer switch request type
+ * @status: Status of the bearer switch request
+ *
+ * Return: pointer to tx ops
+ */
+static QDF_STATUS target_if_send_audio_transport_switch_resp(
+					struct wlan_objmgr_psoc *psoc,
+					enum bearer_switch_req_type req_type,
+					enum bearer_switch_status status)
+{
+	struct wmi_unified *wmi_handle;
+
+	wmi_handle = get_wmi_unified_hdl_from_psoc(psoc);
+	if (!wmi_handle) {
+		target_if_err("wmi_handle is null.");
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+
+	return wmi_unified_audio_transport_switch_resp_send(wmi_handle,
+							    req_type, status);
+}
+
+static int target_if_send_audio_transport_switch_req_event_handler(
+							ol_scn_t scn,
+							uint8_t *event,
+							uint32_t len)
+{
+	struct wlan_objmgr_psoc *psoc;
+	struct ll_sap_psoc_priv_obj *psoc_ll_sap_obj;
+	enum bearer_switch_req_type req_type;
+	struct wmi_unified *wmi_handle;
+	struct wlan_ll_sap_rx_ops *rx_ops;
+	QDF_STATUS qdf_status;
+
+	psoc = target_if_get_psoc_from_scn_hdl(scn);
+	if (!psoc) {
+		target_if_err("psoc is null");
+		return -EINVAL;
+	}
+
+	wmi_handle = get_wmi_unified_hdl_from_psoc(psoc);
+	if (!wmi_handle) {
+		target_if_err("wmi_handle is null");
+		return -EINVAL;
+	}
+
+	psoc_ll_sap_obj = wlan_objmgr_psoc_get_comp_private_obj(
+							psoc,
+							WLAN_UMAC_COMP_LL_SAP);
+
+	if (!psoc_ll_sap_obj) {
+		target_if_err("psoc_ll_sap_obj is null");
+		return -EINVAL;
+	}
+
+	rx_ops = &psoc_ll_sap_obj->rx_ops;
+	if (!rx_ops || !rx_ops->audio_transport_switch_req) {
+		target_if_err("Invalid ll_sap rx ops");
+		return -EINVAL;
+	}
+
+	qdf_status = wmi_extract_audio_transport_switch_req_event(wmi_handle,
+								  event, len,
+								  &req_type);
+	if (QDF_IS_STATUS_ERROR(qdf_status)) {
+		target_if_err("parsing of event failed, %d", qdf_status);
+		return -EINVAL;
+	}
+	rx_ops->audio_transport_switch_req(psoc, req_type);
+
+	return 0;
+}
+
+void
+target_if_ll_sap_register_tx_ops(struct wlan_ll_sap_tx_ops *tx_ops)
+{
+	tx_ops->send_audio_transport_switch_resp =
+		target_if_send_audio_transport_switch_resp;
+}
+
+void
+target_if_ll_sap_register_rx_ops(struct wlan_ll_sap_rx_ops *rx_ops)
+{
+	rx_ops->audio_transport_switch_req =
+		wlan_ll_sap_fw_bearer_switch_req;
+}
+
+QDF_STATUS
+target_if_ll_sap_register_events(struct wlan_objmgr_psoc *psoc)
+{
+	QDF_STATUS ret;
+	wmi_unified_t handle = get_wmi_unified_hdl_from_psoc(psoc);
+
+	if (!handle) {
+		target_if_err("handle is NULL");
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	ret = wmi_unified_register_event_handler(
+			handle,
+			wmi_audio_transport_switch_type_event_id,
+			target_if_send_audio_transport_switch_req_event_handler,
+			WMI_RX_SERIALIZER_CTX);
+	return ret;
+}
+
+QDF_STATUS
+target_if_ll_sap_deregister_events(struct wlan_objmgr_psoc *psoc)
+{
+	QDF_STATUS ret;
+	wmi_unified_t handle = get_wmi_unified_hdl_from_psoc(psoc);
+
+	if (!handle) {
+		target_if_err("handle is NULL");
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	ret = wmi_unified_unregister_event_handler(
+			handle,
+			wmi_audio_transport_switch_type_event_id);
+	return ret;
+}