diff --git a/core/hdd/src/wlan_hdd_regulatory.c b/core/hdd/src/wlan_hdd_regulatory.c
new file mode 100644
index 0000000..35886b7
--- /dev/null
+++ b/core/hdd/src/wlan_hdd_regulatory.c
@@ -0,0 +1,766 @@
+/*
+ * Copyright (c) 2014-2016 The Linux Foundation. All rights reserved.
+ *
+ * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
+ *
+ *
+ * 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.
+ */
+
+/*
+ * This file was originally distributed by Qualcomm Atheros, Inc.
+ * under proprietary terms before Copyright ownership was assigned
+ * to the Linux Foundation.
+ */
+
+/**
+ * DOC: wlan_hdd_regulatory.c
+ *
+ * hdd regulatory implementation
+ */
+
+#include "qdf_types.h"
+#include "cds_reg_service.h"
+#include "qdf_trace.h"
+#include "sme_api.h"
+#include "wlan_hdd_main.h"
+#include "cds_regdomain.h"
+#include "cds_regdomain_common.h"
+#include "wlan_hdd_regulatory.h"
+
+#define WORLD_SKU_MASK      0x00F0
+#define WORLD_SKU_PREFIX    0x0060
+#define REG_WAIT_TIME       50
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+#define IEEE80211_CHAN_PASSIVE_SCAN IEEE80211_CHAN_NO_IR
+#define IEEE80211_CHAN_NO_IBSS IEEE80211_CHAN_NO_IR
+#endif
+
+#define REG_RULE_2412_2462    REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
+
+#define REG_RULE_2467_2472    REG_RULE(2467-10, 2472+10, 40, 0, 20, \
+			      NL80211_RRF_PASSIVE_SCAN)
+
+#define REG_RULE_2484         REG_RULE(2484-10, 2484+10, 40, 0, 20, \
+		NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
+
+#define REG_RULE_5180_5320    REG_RULE(5180-10, 5320+10, 80, 0, 20, \
+		NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+
+#define REG_RULE_5500_5720    REG_RULE(5500-10, 5720+10, 80, 0, 20, \
+		NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+
+#define REG_RULE_5745_5925    REG_RULE(5745-10, 5925+10, 80, 0, 20, \
+		NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+
+static bool init_by_driver;
+static bool init_by_reg_core;
+
+static const struct ieee80211_regdomain
+hdd_world_regrules_60_61_62 = {
+	.n_reg_rules = 6,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE_2412_2462,
+		REG_RULE_2467_2472,
+		REG_RULE_2484,
+		REG_RULE_5180_5320,
+		REG_RULE_5500_5720,
+		REG_RULE_5745_5925,
+	}
+};
+
+static const struct ieee80211_regdomain
+hdd_world_regrules_63_65 = {
+	.n_reg_rules = 4,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE_2412_2462,
+		REG_RULE_2467_2472,
+		REG_RULE_5180_5320,
+		REG_RULE_5745_5925,
+	}
+};
+
+static const struct ieee80211_regdomain
+hdd_world_regrules_64 = {
+	.n_reg_rules = 3,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE_2412_2462,
+		REG_RULE_5180_5320,
+		REG_RULE_5745_5925,
+	}
+};
+
+static const struct ieee80211_regdomain
+hdd_world_regrules_66_69 = {
+	.n_reg_rules = 4,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE_2412_2462,
+		REG_RULE_5180_5320,
+		REG_RULE_5500_5720,
+		REG_RULE_5745_5925,
+	}
+};
+
+static const struct ieee80211_regdomain
+hdd_world_regrules_67_68_6A_6C = {
+	.n_reg_rules = 5,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE_2412_2462,
+		REG_RULE_2467_2472,
+		REG_RULE_5180_5320,
+		REG_RULE_5500_5720,
+		REG_RULE_5745_5925,
+	}
+};
+
+/**
+ * hdd_get_world_regrules() - get the appropriate world regrules
+ * @reg: regulatory data
+ *
+ * Return: regulatory rules ptr
+ */
+static const struct ieee80211_regdomain *hdd_get_world_regrules(
+struct regulatory *reg)
+{
+	REG_DMN_PAIR_MAPPING *regpair =
+		(REG_DMN_PAIR_MAPPING *)reg->regpair;
+
+	switch (regpair->regDmnEnum) {
+	case 0x60:
+	case 0x61:
+	case 0x62:
+		return &hdd_world_regrules_60_61_62;
+	case 0x63:
+	case 0x65:
+		return &hdd_world_regrules_63_65;
+	case 0x64:
+		return &hdd_world_regrules_64;
+	case 0x66:
+	case 0x69:
+		return &hdd_world_regrules_66_69;
+	case 0x67:
+	case 0x68:
+	case 0x6A:
+	case 0x6C:
+		return &hdd_world_regrules_67_68_6A_6C;
+	default:
+		hdd_warn("invalid world mode in BDF");
+		return &hdd_world_regrules_60_61_62;
+	}
+}
+
+/**
+ * hdd_is_world_regdomain() - whether world regdomain
+ * @reg_domain: integer regulatory domain
+ *
+ * Return: bool
+ */
+bool hdd_is_world_regdomain(uint32_t reg_domain)
+{
+	uint32_t temp_regd = reg_domain & ~WORLDWIDE_ROAMING_FLAG;
+
+	return ((temp_regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) &&
+		(((temp_regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) ||
+		 (temp_regd == WORLD));
+}
+
+
+/**
+ * hdd_update_regulatory_info() - update regulatory info
+ * @hdd_ctx: hdd context
+ *
+ * Return: void
+ */
+static void hdd_update_regulatory_info(hdd_context_t *hdd_ctx)
+{
+	uint32_t country_code;
+
+	country_code = cds_get_country_from_alpha2(hdd_ctx->reg.alpha2);
+
+	hdd_ctx->reg.reg_domain = COUNTRY_ERD_FLAG;
+	hdd_ctx->reg.reg_domain |= country_code;
+
+	cds_fill_some_regulatory_info(&hdd_ctx->reg);
+
+}
+
+/**
+ * hdd_regulatory_wiphy_init() - regulatory wiphy init
+ * @hdd_ctx: hdd context
+ * @reg: regulatory data
+ * @wiphy: wiphy structure
+ *
+ * Return: void
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+static void hdd_regulatory_wiphy_init(hdd_context_t *hdd_ctx,
+				     struct regulatory *reg,
+				     struct wiphy *wiphy)
+{
+	const struct ieee80211_regdomain *reg_rules;
+
+	if (hdd_is_world_regdomain(reg->reg_domain)) {
+		reg_rules = hdd_get_world_regrules(reg);
+		wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
+	} else if (hdd_ctx->config->fRegChangeDefCountry) {
+		wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
+		reg_rules = &hdd_world_regrules_60_61_62;
+	} else {
+		wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
+		reg_rules = &hdd_world_regrules_60_61_62;
+	}
+
+	/*
+	 * save the original driver regulatory flags
+	 */
+	hdd_ctx->reg.reg_flags = wiphy->regulatory_flags;
+	wiphy_apply_custom_regulatory(wiphy, reg_rules);
+
+	/*
+	 * restore the driver regulatory flags since
+	 * wiphy_apply_custom_regulatory may have
+	 * changed them
+	 */
+	wiphy->regulatory_flags = hdd_ctx->reg.reg_flags;
+
+}
+#else
+static void hdd_regulatory_wiphy_init(hdd_context_t *hdd_ctx,
+				     struct regulatory *reg,
+				     struct wiphy *wiphy)
+{
+	const struct ieee80211_regdomain *reg_rules;
+
+	if (hdd_is_world_regdomain(reg->reg_domain)) {
+		reg_rules = hdd_get_world_regrules(reg);
+		wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
+	} else if (hdd_ctx->config->fRegChangeDefCountry) {
+		wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
+		reg_rules = &hdd_world_regrules_60_61_62;
+	} else {
+		wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
+		reg_rules = &hdd_world_regrules_60_61_62;
+	}
+
+	/*
+	 * save the original driver regulatory flags
+	 */
+	hdd_ctx->reg.reg_flags = wiphy->flags;
+	wiphy_apply_custom_regulatory(wiphy, reg_rules);
+
+	/*
+	 * restore the driver regulatory flags since
+	 * wiphy_apply_custom_regulatory may have
+	 * changed them
+	 */
+	wiphy->flags = hdd_ctx->reg.reg_flags;
+
+}
+#endif
+
+/**
+ * hdd_bw20_ch_index_to_() - convert 20 mhhz channel index to 40 mhz index
+ * @k: 20 mhz channel index
+ *
+ * Return: void
+ */
+static int hdd_bw20_ch_index_to_bw40_ch_index(int k)
+{
+	int m = -1;
+
+	if (k >= RF_CHAN_1 && k <= RF_CHAN_14) {
+		m = k - RF_CHAN_1 + RF_CHAN_BOND_3;
+		if (m > RF_CHAN_BOND_11)
+			m = RF_CHAN_BOND_11;
+	} else if (k >= RF_CHAN_36 && k <= RF_CHAN_64) {
+		m = k - RF_CHAN_36 + RF_CHAN_BOND_38;
+		if (m > RF_CHAN_BOND_62)
+			m = RF_CHAN_BOND_62;
+	} else if (k >= RF_CHAN_100 && k <= RF_CHAN_144) {
+		m = k - RF_CHAN_100 + RF_CHAN_BOND_102;
+		if (m > RF_CHAN_BOND_142)
+			m = RF_CHAN_BOND_142;
+	} else if (k >= RF_CHAN_149 && k <= RF_CHAN_165) {
+		m = k - RF_CHAN_149 + RF_CHAN_BOND_151;
+		if (m > RF_CHAN_BOND_163)
+			m = RF_CHAN_BOND_163;
+	}
+
+	return m;
+}
+
+/**
+ * is_wiphy_custom_regulatory() - is custom regulatory defined
+ * @wiphy: wiphy
+ *
+ * Return: int
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+static int is_wiphy_custom_regulatory(struct wiphy *wiphy)
+{
+
+	return wiphy->regulatory_flags & REGULATORY_CUSTOM_REG;
+}
+#else
+static int is_wiphy_custom_regulatory(struct wiphy *wiphy)
+{
+	return wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY;
+}
+#endif
+
+
+/**
+ * hdd_modify_wiphy() - modify wiphy
+ * @wiphy: wiphy
+ * @chan: channel structure
+ *
+ * Return: void
+ */
+static void hdd_modify_wiphy(struct wiphy  *wiphy,
+			     struct ieee80211_channel *chan)
+{
+	const struct ieee80211_reg_rule *reg_rule;
+
+	if (is_wiphy_custom_regulatory(wiphy)) {
+		reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
+		if (!IS_ERR(reg_rule)) {
+			chan->flags &= ~IEEE80211_CHAN_DISABLED;
+
+			if (!(reg_rule->flags & NL80211_RRF_DFS)) {
+				hdd_info("%s: remove dfs restriction for %u",
+					 __func__, chan->center_freq);
+				chan->flags &= ~IEEE80211_CHAN_RADAR;
+			}
+
+			if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) {
+				hdd_info("%s: remove passive restriction for %u",
+					 __func__, chan->center_freq);
+				chan->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
+			}
+
+			if (!(reg_rule->flags & NL80211_RRF_NO_IBSS)) {
+				hdd_info("%s: remove no ibss restriction for %u",
+					 __func__, chan->center_freq);
+				chan->flags &= ~IEEE80211_CHAN_NO_IBSS;
+			}
+
+			chan->max_power =
+				MBM_TO_DBM(reg_rule->power_rule.max_eirp);
+		}
+	}
+}
+
+/**
+ * hdd_process_regulatory_data() - process regulatory data
+ * @hdd_ctx: hdd context
+ * @wiphy: wiphy
+ * @reset: whether to reset channel data
+ *
+ * Return: void
+ */
+static void hdd_process_regulatory_data(hdd_context_t *hdd_ctx,
+					struct wiphy *wiphy,
+					bool reset)
+{
+	int i, j, m;
+	int k = 0, n = 0;
+	struct ieee80211_channel *chan;
+	struct regulatory_channel *temp_chan_k, *temp_chan_n, *temp_chan;
+	uint8_t band_capability;
+
+	band_capability = hdd_ctx->config->nBandCapability;
+
+	hdd_ctx->isVHT80Allowed = 0;
+
+	if (band_capability == eCSR_BAND_24)
+		hdd_info("band capability is set to 2G only");
+
+	for (i = 0, m = 0; i < IEEE80211_NUM_BANDS; i++) {
+
+		if (i == IEEE80211_BAND_2GHZ &&
+		    band_capability == eCSR_BAND_5G)
+			continue;
+
+		else if (i == IEEE80211_BAND_5GHZ &&
+			 band_capability == eCSR_BAND_24)
+			continue;
+
+		if (wiphy->bands[i] == NULL) {
+			hdd_info("wiphy band no %d is NULL", i);
+			continue;
+		}
+
+		if (i == 0)
+			m = 0;
+		else
+			m = wiphy->bands[i-1]->n_channels + m;
+
+		for (j = 0; j < wiphy->bands[i]->n_channels; j++) {
+
+			k = m + j;
+			n = hdd_bw20_ch_index_to_bw40_ch_index(k);
+
+			chan = &(wiphy->bands[i]->channels[j]);
+			temp_chan_k = &(reg_channels[k]);
+			temp_chan_n = &(reg_channels[n]);
+
+			if (!reset)
+				hdd_modify_wiphy(wiphy, chan);
+
+			if (chan->flags & IEEE80211_CHAN_DISABLED) {
+				temp_chan_k->state =
+					CHANNEL_STATE_DISABLE;
+				temp_chan_k->flags = chan->flags;
+				if (n != -1) {
+					temp_chan_n->state =
+						CHANNEL_STATE_DISABLE;
+					temp_chan_n->flags = chan->flags;
+				}
+			} else if (chan->flags &
+				   (IEEE80211_CHAN_RADAR |
+				    IEEE80211_CHAN_PASSIVE_SCAN |
+				    IEEE80211_CHAN_INDOOR_ONLY)) {
+
+				if (chan->flags &
+				    IEEE80211_CHAN_INDOOR_ONLY)
+					chan->flags |=
+						IEEE80211_CHAN_PASSIVE_SCAN;
+				temp_chan_k->state = CHANNEL_STATE_DFS;
+				temp_chan_k->pwr_limit =
+					chan->max_power;
+				temp_chan_k->flags = chan->flags;
+
+				if (n != -1) {
+					if ((chan->flags &
+					     IEEE80211_CHAN_NO_HT40) ==
+					    IEEE80211_CHAN_NO_HT40) {
+						temp_chan_n->state =
+							CHANNEL_STATE_DISABLE;
+					} else {
+						temp_chan_n->state =
+							CHANNEL_STATE_DFS;
+						temp_chan_n->pwr_limit =
+							 chan->max_power-3;
+					}
+					temp_chan_n->flags = chan->flags;
+				}
+				if ((chan->flags &
+				     IEEE80211_CHAN_NO_80MHZ) == 0)
+					hdd_ctx->isVHT80Allowed = 1;
+			} else {
+				temp_chan_k->state = CHANNEL_STATE_ENABLE;
+				temp_chan_k->pwr_limit = chan->max_power;
+				temp_chan_k->flags = chan->flags;
+				if (n != -1) {
+					if ((chan->flags &
+					     IEEE80211_CHAN_NO_HT40) ==
+					    IEEE80211_CHAN_NO_HT40) {
+						temp_chan_n->state =
+							CHANNEL_STATE_DISABLE;
+					} else {
+						temp_chan_n->state =
+							CHANNEL_STATE_ENABLE;
+						temp_chan_n->pwr_limit =
+							chan->max_power - 3;
+					}
+					temp_chan_n->flags = chan->flags;
+				}
+				if ((chan->flags &
+				     IEEE80211_CHAN_NO_80MHZ) == 0)
+					hdd_ctx->isVHT80Allowed = 1;
+			}
+		}
+	}
+
+	if (0 == (hdd_ctx->reg.eeprom_rd_ext &
+		  (1 << WHAL_REG_EXT_FCC_CH_144))) {
+		temp_chan = &(reg_channels[RF_CHAN_144]);
+		temp_chan->state =
+			CHANNEL_STATE_DISABLE;
+	}
+
+}
+
+
+/**
+ * hdd_regulatory_init() - regulatory_init
+ * @hdd_ctx: hdd context
+ * @wiphy: wiphy
+ *
+ * Return: int
+ */
+int hdd_regulatory_init(hdd_context_t *hdd_ctx, struct wiphy *wiphy)
+{
+	int ret_val;
+	struct regulatory *reg_info;
+
+	reg_info = &hdd_ctx->reg;
+
+	hdd_regulatory_wiphy_init(hdd_ctx, reg_info, wiphy);
+
+	hdd_process_regulatory_data(hdd_ctx, wiphy, true);
+
+	reg_info->cc_src = SOURCE_DRIVER;
+
+	ret_val = cds_fill_some_regulatory_info(reg_info);
+	if (ret_val) {
+		hdd_err("incorrect BDF regulatory data");
+		return ret_val;
+	}
+
+	cds_put_default_country(reg_info->alpha2);
+
+	init_completion(&hdd_ctx->reg_init);
+
+	cds_fill_and_send_ctl_to_fw(reg_info);
+
+	return 0;
+}
+
+/**
+ * hdd_program_country_code() - process channel information from country code
+ * @hdd_ctx: hddc context
+ *
+ * Return: void
+ */
+void hdd_program_country_code(hdd_context_t *hdd_ctx)
+{
+	struct wiphy *wiphy = hdd_ctx->wiphy;
+	uint8_t *country_alpha2 = hdd_ctx->reg.alpha2;
+
+	if (false == init_by_reg_core) {
+		init_by_driver = true;
+		if (('0' != country_alpha2[0]) ||
+		    ('0' != country_alpha2[1])) {
+			INIT_COMPLETION(hdd_ctx->reg_init);
+			regulatory_hint(wiphy, country_alpha2);
+			wait_for_completion_timeout(&hdd_ctx->reg_init,
+					      msecs_to_jiffies(REG_WAIT_TIME));
+		}
+	}
+}
+
+
+/**
+ * hdd_set_dfs_region() - set the dfs_region
+ * @dfs_region: the dfs_region to set
+ *
+ * Return: void
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+static void hdd_set_dfs_region(hdd_context_t *hdd_ctx,
+			       uint8_t dfs_reg)
+{
+	cds_put_dfs_region(dfs_reg);
+}
+#else
+static void hdd_set_dfs_region(hdd_context_t *hdd_ctx,
+				     uint8_t dfs_reg)
+{
+
+	/* remap the ctl code to dfs region code */
+	switch (hdd_ctx->reg.ctl_5g) {
+	case FCC:
+		cds_put_dfs_region(DFS_FCC_DOMAIN);
+		break;
+	case ETSI:
+		cds_put_dfs_region(DFS_ETSI_DOMAIN);
+		break;
+	case MKK:
+		cds_put_dfs_region(DFS_MKK4_DOMAIN);
+		break;
+	default:
+		/* set default dfs_region to FCC */
+		cds_put_dfs_region(DFS_FCC_DOMAIN);
+		break;
+	}
+
+}
+#endif
+
+/**
+ * hdd_restore_custom_reg_settings() - restore custom reg settings
+ * @wiphy: wiphy structure
+ * @country_alpha2: alpha2 of the country
+ * @reset: whether wiphy is reset
+ *
+ * Return: void
+ */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+static void hdd_restore_custom_reg_settings(struct wiphy *wiphy,
+					    uint8_t *country_alpha2,
+					    bool *reset)
+{
+}
+#else
+static void hdd_restore_custom_reg_settings(struct wiphy *wiphy,
+					    uint8_t *country_alpha2,
+					    bool *reset)
+{
+	struct ieee80211_supported_band *sband;
+	enum ieee80211_band band;
+	struct ieee80211_channel *chan;
+	int i;
+
+	if ((country_alpha2[0] == '0') &&
+	    (country_alpha2[1] == '0') &&
+	    (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY)) {
+
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			sband = wiphy->bands[band];
+			if (!sband)
+				continue;
+			for (i = 0; i < sband->n_channels; i++) {
+				chan = &sband->channels[i];
+				chan->flags = chan->orig_flags;
+				chan->max_antenna_gain = chan->orig_mag;
+				chan->max_power = chan->orig_mpwr;
+			}
+		}
+		*reset = true;
+	}
+}
+#endif
+
+
+/**
+ * hdd_restore_reg_flags() - restore regulatory flags
+ * @flags: regulatory flags
+ *
+ * Return: void
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
+static void hdd_restore_reg_flags(struct wiphy *wiphy, uint32_t flags)
+{
+	wiphy->regulatory_flags = flags;
+}
+#else
+static void hdd_restore_reg_flags(struct wiphy *wiphy, uint32_t flags)
+{
+	wiphy->flags = flags;
+}
+#endif
+
+
+/**
+ * hdd_reg_notifier() - regulatory notifier
+ * @wiphy: wiphy
+ * @request: regulatory request
+ *
+ * Return: void
+ */
+void hdd_reg_notifier(struct wiphy *wiphy,
+		      struct regulatory_request *request)
+{
+	hdd_context_t *hdd_ctx = wiphy_priv(wiphy);
+	eCsrBand band_capability = eCSR_BAND_ALL;
+	bool vht80_allowed;
+	bool reset = false;
+	uint8_t dfs_reg;
+
+	hdd_info("country: %c%c, initiator %d, dfs_region: %d",
+		  request->alpha2[0],
+		  request->alpha2[1],
+		  request->initiator,
+		  request->dfs_region);
+
+	if (NULL == hdd_ctx) {
+		hdd_err("invalid hdd_ctx pointer");
+		return;
+	}
+
+	if (cds_is_driver_unloading() || cds_is_driver_recovering()) {
+		hdd_err("%s: unloading or ssr in progress, ignore",
+			__func__);
+		return;
+	}
+
+	sme_get_freq_band(hdd_ctx->hHal, &band_capability);
+
+	/* first check if this callback is in response to the driver callback */
+
+	switch (request->initiator) {
+	case NL80211_REGDOM_SET_BY_DRIVER:
+	case NL80211_REGDOM_SET_BY_CORE:
+	case NL80211_REGDOM_SET_BY_USER:
+
+		if ((false == init_by_driver) &&
+		    (false == init_by_reg_core)) {
+
+			if (NL80211_REGDOM_SET_BY_CORE == request->initiator)
+				return;
+			init_by_reg_core = true;
+		}
+
+		if ((NL80211_REGDOM_SET_BY_DRIVER == request->initiator) &&
+		    (true == init_by_driver)) {
+
+			/*
+			 * restore the driver regulatory flags since
+			 * regulatory_hint may have
+			 * changed them
+			 */
+			hdd_restore_reg_flags(wiphy, hdd_ctx->reg.reg_flags);
+		}
+
+		if (NL80211_REGDOM_SET_BY_CORE == request->initiator) {
+			hdd_ctx->reg.cc_src = SOURCE_CORE;
+			if (is_wiphy_custom_regulatory(wiphy))
+				reset = true;
+		} else if (NL80211_REGDOM_SET_BY_DRIVER == request->initiator)
+			hdd_ctx->reg.cc_src = SOURCE_DRIVER;
+		else {
+			hdd_ctx->reg.cc_src = SOURCE_USERSPACE;
+			hdd_restore_custom_reg_settings(wiphy,
+							request->alpha2,
+							&reset);
+		}
+
+		hdd_ctx->reg.alpha2[0] = request->alpha2[0];
+		hdd_ctx->reg.alpha2[1] = request->alpha2[1];
+
+		hdd_update_regulatory_info(hdd_ctx);
+
+		vht80_allowed = hdd_ctx->isVHT80Allowed;
+
+		hdd_process_regulatory_data(hdd_ctx, wiphy, reset);
+
+		if (hdd_ctx->isVHT80Allowed != vht80_allowed)
+			hdd_checkandupdate_phymode(hdd_ctx);
+
+		if (NL80211_REGDOM_SET_BY_DRIVER == request->initiator)
+			complete(&hdd_ctx->reg_init);
+
+		sme_generic_change_country_code(hdd_ctx->hHal,
+						hdd_ctx->reg.alpha2);
+
+		cds_fill_and_send_ctl_to_fw(&hdd_ctx->reg);
+
+		hdd_set_dfs_region(hdd_ctx, request->dfs_region);
+
+		cds_get_dfs_region(&dfs_reg);
+		cds_set_wma_dfs_region(dfs_reg);
+		break;
+
+	default:
+		break;
+	}
+}