qcacld-3.0: Initial place holder for dsc stub functions

Initial change to hold the dsc stub functions

Change-Id: Id150755e7685c1a06a509b1cf2b10480c35a8bf4
CRs-Fixed: 2362316

Kbuild

@@ -49,6 +49,7 @@ HDD_OBJS := 	$(HDD_SRC_DIR)/wlan_hdd_assoc.o \
 		$(HDD_SRC_DIR)/wlan_hdd_cfg80211.o \
 		$(HDD_SRC_DIR)/wlan_hdd_data_stall_detection.o \
 		$(HDD_SRC_DIR)/wlan_hdd_driver_ops.o \
+		$(HDD_SRC_DIR)/wlan_hdd_dsc.o \
 		$(HDD_SRC_DIR)/wlan_hdd_ext_scan.o \
 		$(HDD_SRC_DIR)/wlan_hdd_ftm.o \
 		$(HDD_SRC_DIR)/wlan_hdd_hostapd.o \

core/hdd/inc/wlan_hdd_dsc.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2018 The Linux Foundation. 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.
+ */
+
+#ifndef __WLAN_HDD_DSC_H__
+#define __WLAN_HDD_DSC_H__
+
+#include <wlan_hdd_main.h>
+
+/**
+ * hdd_dsc_psoc_from_wiphy() - get dsc psoc from wiphy
+ * @wiphy: Pointer to wireless hardware description
+ *
+ * Return: dsc_psoc on success, NULL on failure
+ */
+struct dsc_psoc *hdd_dsc_psoc_from_wiphy(struct wiphy *wiphy);
+#endif

core/hdd/src/wlan_hdd_dsc.c

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2018 The Linux Foundation. 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 "wlan_hdd_dsc.h"
+
+struct dsc_psoc *hdd_dsc_psoc_from_wiphy(struct wiphy *wiphy)
+{
+	struct hdd_context *hdd_ctx = wiphy_priv(wiphy);
+
+	if (!hdd_ctx)
+		return NULL;
+
+	if (!hdd_ctx->hdd_psoc)
+		return NULL;
+
+	return hdd_ctx->hdd_psoc->dsc_psoc;
+}