drivers/bluetooth/btqca.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Bluetooth supports for Qualcomm Atheros chips
  *
  *  Copyright (c) 2015 The Linux Foundation. All rights reserved.
  */
 #include <linux/module.h>
 #include <linux/firmware.h>
 #include <linux/vmalloc.h>

 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>

 #include "btqca.h"

 #define VERSION "0.1"

 int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
 			 enum qca_btsoc_type soc_type)
 {
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
 	char cmd;
 	int err = 0;
 	u8 event_type = HCI_EV_VENDOR;
 	u8 rlen = sizeof(*edl) + sizeof(*ver);
 	u8 rtype = EDL_APP_VER_RES_EVT;

 	bt_dev_dbg(hdev, "QCA Version Request");

 	/* Unlike other SoC's sending version command response as payload to
 	 * VSE event. WCN3991 sends version command response as a payload to
 	 * command complete event.
 	 */
 	if (soc_type >= QCA_WCN3991) {
 		event_type = 0;
 		rlen += 1;
 		rtype = EDL_PATCH_VER_REQ_CMD;
 	}

 	cmd = EDL_PATCH_VER_REQ_CMD;
 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
 				&cmd, event_type, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "Reading QCA version information failed (%d)",
 			   err);
 		return err;
 	}

 	if (skb->len != rlen) {
 		bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
 		err = -EILSEQ;
 		goto out;
 	}

 	edl = (struct edl_event_hdr *)(skb->data);
 	if (!edl) {
 		bt_dev_err(hdev, "QCA TLV with no header");
 		err = -EILSEQ;
 		goto out;
 	}

 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
 	    edl->rtype != rtype) {
 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
 			   edl->rtype);
 		err = -EIO;
 		goto out;
 	}

 	if (soc_type >= QCA_WCN3991)
 		memcpy(ver, edl->data + 1, sizeof(*ver));
 	else
 		memcpy(ver, &edl->data, sizeof(*ver));

 	bt_dev_info(hdev, "QCA Product ID   :0x%08x",
 		    le32_to_cpu(ver->product_id));
 	bt_dev_info(hdev, "QCA SOC Version  :0x%08x",
 		    le32_to_cpu(ver->soc_id));
 	bt_dev_info(hdev, "QCA ROM Version  :0x%08x",
 		    le16_to_cpu(ver->rom_ver));
 	bt_dev_info(hdev, "QCA Patch Version:0x%08x",
 		    le16_to_cpu(ver->patch_ver));

 	if (ver->soc_id == 0 || ver->rom_ver == 0)
 		err = -EILSEQ;

 out:
 	kfree_skb(skb);
 	if (err)
 		bt_dev_err(hdev, "QCA Failed to get version (%d)", err);

 	return err;
 }
 EXPORT_SYMBOL_GPL(qca_read_soc_version);

 static int qca_read_fw_build_info(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
 	char cmd, build_label[QCA_FW_BUILD_VER_LEN];
 	int build_lbl_len, err = 0;

 	bt_dev_dbg(hdev, "QCA read fw build info");

 	cmd = EDL_GET_BUILD_INFO_CMD;
 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
 				&cmd, 0, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "Reading QCA fw build info failed (%d)",
 			   err);
 		return err;
 	}

 	edl = (struct edl_event_hdr *)(skb->data);
 	if (!edl) {
 		bt_dev_err(hdev, "QCA read fw build info with no header");
 		err = -EILSEQ;
 		goto out;
 	}

 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
 	    edl->rtype != EDL_GET_BUILD_INFO_CMD) {
 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
 			   edl->rtype);
 		err = -EIO;
 		goto out;
 	}

 	build_lbl_len = edl->data[0];
 	if (build_lbl_len <= QCA_FW_BUILD_VER_LEN - 1) {
 		memcpy(build_label, edl->data + 1, build_lbl_len);
 		*(build_label + build_lbl_len) = '\0';
 	}

 	hci_set_fw_info(hdev, "%s", build_label);

 out:
 	kfree_skb(skb);
 	return err;
 }

 static int qca_send_patch_config_cmd(struct hci_dev *hdev)
 {
 	const u8 cmd[] = { EDL_PATCH_CONFIG_CMD, 0x01, 0, 0, 0 };
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
 	int err;

 	bt_dev_dbg(hdev, "QCA Patch config");

 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, sizeof(cmd),
 				cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "Sending QCA Patch config failed (%d)", err);
 		return err;
 	}

 	if (skb->len != 2) {
 		bt_dev_err(hdev, "QCA Patch config cmd size mismatch len %d", skb->len);
 		err = -EILSEQ;
 		goto out;
 	}

 	edl = (struct edl_event_hdr *)(skb->data);
 	if (!edl) {
 		bt_dev_err(hdev, "QCA Patch config with no header");
 		err = -EILSEQ;
 		goto out;
 	}

 	if (edl->cresp != EDL_PATCH_CONFIG_RES_EVT || edl->rtype != EDL_PATCH_CONFIG_CMD) {
 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
 			   edl->rtype);
 		err = -EIO;
 		goto out;
 	}

 	err = 0;

 out:
 	kfree_skb(skb);
 	return err;
 }

 static int qca_send_reset(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
 	int err;

 	bt_dev_dbg(hdev, "QCA HCI_RESET");

 	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Reset failed (%d)", err);
 		return err;
 	}

 	kfree_skb(skb);

 	return 0;
 }

 int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
 	int err;

 	bt_dev_dbg(hdev, "QCA pre shutdown cmd");

 	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
 				NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);

 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
 		return err;
 	}

 	kfree_skb(skb);

 	return 0;
 }
 EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);

 static void qca_tlv_check_data(struct hci_dev *hdev,
 			       struct qca_fw_config *config,
 		u8 *fw_data, enum qca_btsoc_type soc_type)
 {
 	const u8 *data;
 	u32 type_len;
 	u16 tag_id, tag_len;
 	int idx, length;
 	struct tlv_type_hdr *tlv;
 	struct tlv_type_patch *tlv_patch;
 	struct tlv_type_nvm *tlv_nvm;
 	uint8_t nvm_baud_rate = config->user_baud_rate;

 	config->dnld_mode = QCA_SKIP_EVT_NONE;
 	config->dnld_type = QCA_SKIP_EVT_NONE;

 	switch (config->type) {
 	case ELF_TYPE_PATCH:
 		config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
 		config->dnld_type = QCA_SKIP_EVT_VSE_CC;

 		bt_dev_dbg(hdev, "File Class        : 0x%x", fw_data[4]);
 		bt_dev_dbg(hdev, "Data Encoding     : 0x%x", fw_data[5]);
 		bt_dev_dbg(hdev, "File version      : 0x%x", fw_data[6]);
 		break;
 	case TLV_TYPE_PATCH:
 		tlv = (struct tlv_type_hdr *)fw_data;
 		type_len = le32_to_cpu(tlv->type_len);
 		tlv_patch = (struct tlv_type_patch *)tlv->data;

 		/* For Rome version 1.1 to 3.1, all segment commands
 		 * are acked by a vendor specific event (VSE).
 		 * For Rome >= 3.2, the download mode field indicates
 		 * if VSE is skipped by the controller.
 		 * In case VSE is skipped, only the last segment is acked.
 		 */
 		config->dnld_mode = tlv_patch->download_mode;
 		config->dnld_type = config->dnld_mode;

 		BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
 		BT_DBG("Total Length           : %d bytes",
 		       le32_to_cpu(tlv_patch->total_size));
 		BT_DBG("Patch Data Length      : %d bytes",
 		       le32_to_cpu(tlv_patch->data_length));
 		BT_DBG("Signing Format Version : 0x%x",
 		       tlv_patch->format_version);
 		BT_DBG("Signature Algorithm    : 0x%x",
 		       tlv_patch->signature);
 		BT_DBG("Download mode          : 0x%x",
 		       tlv_patch->download_mode);
 		BT_DBG("Reserved               : 0x%x",
 		       tlv_patch->reserved1);
 		BT_DBG("Product ID             : 0x%04x",
 		       le16_to_cpu(tlv_patch->product_id));
 		BT_DBG("Rom Build Version      : 0x%04x",
 		       le16_to_cpu(tlv_patch->rom_build));
 		BT_DBG("Patch Version          : 0x%04x",
 		       le16_to_cpu(tlv_patch->patch_version));
 		BT_DBG("Reserved               : 0x%x",
 		       le16_to_cpu(tlv_patch->reserved2));
 		BT_DBG("Patch Entry Address    : 0x%x",
 		       le32_to_cpu(tlv_patch->entry));
 		break;

 	case TLV_TYPE_NVM:
 		tlv = (struct tlv_type_hdr *)fw_data;

 		type_len = le32_to_cpu(tlv->type_len);
 		length = (type_len >> 8) & 0x00ffffff;

 		BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
 		BT_DBG("Length\t\t : %d bytes", length);

 		idx = 0;
 		data = tlv->data;
 		while (idx < length) {
 			tlv_nvm = (struct tlv_type_nvm *)(data + idx);

 			tag_id = le16_to_cpu(tlv_nvm->tag_id);
 			tag_len = le16_to_cpu(tlv_nvm->tag_len);

 			/* Update NVM tags as needed */
 			switch (tag_id) {
 			case EDL_TAG_ID_HCI:
 				/* HCI transport layer parameters
 				 * enabling software inband sleep
 				 * onto controller side.
 				 */
 				tlv_nvm->data[0] |= 0x80;

 				/* UART Baud Rate */
 				if (soc_type >= QCA_WCN3991)
 					tlv_nvm->data[1] = nvm_baud_rate;
 				else
 					tlv_nvm->data[2] = nvm_baud_rate;

 				break;

 			case EDL_TAG_ID_DEEP_SLEEP:
 				/* Sleep enable mask
 				 * enabling deep sleep feature on controller.
 				 */
 				tlv_nvm->data[0] |= 0x01;

 				break;
 			}

 			idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
 		}
 		break;

 	default:
 		BT_ERR("Unknown TLV type %d", config->type);
 		break;
 	}
 }

 static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
 				const u8 *data, enum qca_tlv_dnld_mode mode,
 				enum qca_btsoc_type soc_type)
 {
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
 	struct tlv_seg_resp *tlv_resp;
 	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
 	int err = 0;
 	u8 event_type = HCI_EV_VENDOR;
 	u8 rlen = (sizeof(*edl) + sizeof(*tlv_resp));
 	u8 rtype = EDL_TVL_DNLD_RES_EVT;

 	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
 	cmd[1] = seg_size;
 	memcpy(cmd + 2, data, seg_size);

 	if (mode == QCA_SKIP_EVT_VSE_CC || mode == QCA_SKIP_EVT_VSE)
 		return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
 				      cmd);

 	/* Unlike other SoC's sending version command response as payload to
 	 * VSE event. WCN3991 sends version command response as a payload to
 	 * command complete event.
 	 */
 	if (soc_type >= QCA_WCN3991) {
 		event_type = 0;
 		rlen = sizeof(*edl);
 		rtype = EDL_PATCH_TLV_REQ_CMD;
 	}

 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
 				event_type, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
 		return err;
 	}

 	if (skb->len != rlen) {
 		bt_dev_err(hdev, "QCA TLV response size mismatch");
 		err = -EILSEQ;
 		goto out;
 	}

 	edl = (struct edl_event_hdr *)(skb->data);
 	if (!edl) {
 		bt_dev_err(hdev, "TLV with no header");
 		err = -EILSEQ;
 		goto out;
 	}

 	if (edl->cresp != EDL_CMD_REQ_RES_EVT || edl->rtype != rtype) {
 		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
 			   edl->cresp, edl->rtype);
 		err = -EIO;
 	}

 	if (soc_type >= QCA_WCN3991)
 		goto out;

 	tlv_resp = (struct tlv_seg_resp *)(edl->data);
 	if (tlv_resp->result) {
 		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
 			   edl->cresp, edl->rtype, tlv_resp->result);
 	}

 out:
 	kfree_skb(skb);

 	return err;
 }

 static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
 {
 	struct hci_event_hdr *hdr;
 	struct hci_ev_cmd_complete *evt;
 	struct sk_buff *skb;

 	skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
 	if (!skb)
 		return -ENOMEM;

 	hdr = skb_put(skb, sizeof(*hdr));
 	hdr->evt = HCI_EV_CMD_COMPLETE;
 	hdr->plen = sizeof(*evt) + 1;

 	evt = skb_put(skb, sizeof(*evt));
 	evt->ncmd = 1;
 	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);

 	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);

 	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;

 	return hci_recv_frame(hdev, skb);
 }

 static int qca_download_firmware(struct hci_dev *hdev,
 				 struct qca_fw_config *config,
 				 enum qca_btsoc_type soc_type,
 				 u8 rom_ver)
 {
 	const struct firmware *fw;
 	u8 *data;
 	const u8 *segment;
 	int ret, size, remain, i = 0;

 	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);

 	ret = request_firmware(&fw, config->fwname, &hdev->dev);
 	if (ret) {
 		/* For WCN6750, if mbn file is not present then check for
 		 * tlv file.
 		 */
 		if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
 			bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
 				   config->fwname, ret);
 			config->type = TLV_TYPE_PATCH;
 			snprintf(config->fwname, sizeof(config->fwname),
 				 "qca/msbtfw%02x.tlv", rom_ver);
 			bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
 			ret = request_firmware(&fw, config->fwname, &hdev->dev);
 			if (ret) {
 				bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
 					   config->fwname, ret);
 				return ret;
 			}
 		} else {
 			bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
 				   config->fwname, ret);
 			return ret;
 		}
 	}

 	size = fw->size;
 	data = vmalloc(fw->size);
 	if (!data) {
 		bt_dev_err(hdev, "QCA Failed to allocate memory for file: %s",
 			   config->fwname);
 		release_firmware(fw);
 		return -ENOMEM;
 	}

 	memcpy(data, fw->data, size);
 	release_firmware(fw);

 	qca_tlv_check_data(hdev, config, data, soc_type);

 	segment = data;
 	remain = size;
 	while (remain > 0) {
 		int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);

 		bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);

 		remain -= segsize;
 		/* The last segment is always acked regardless download mode */
 		if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
 			config->dnld_mode = QCA_SKIP_EVT_NONE;

 		ret = qca_tlv_send_segment(hdev, segsize, segment,
 					   config->dnld_mode, soc_type);
 		if (ret)
 			goto out;

 		segment += segsize;
 	}

 	/* Latest qualcomm chipsets are not sending a command complete event
 	 * for every fw packet sent. They only respond with a vendor specific
 	 * event for the last packet. This optimization in the chip will
 	 * decrease the BT in initialization time. Here we will inject a command
 	 * complete event to avoid a command timeout error message.
 	 */
 	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC ||
 	    config->dnld_type == QCA_SKIP_EVT_VSE)
 		ret = qca_inject_cmd_complete_event(hdev);

 out:
 	vfree(data);

 	return ret;
 }

 static int qca_disable_soc_logging(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
 	u8 cmd[2];
 	int err;

 	cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
 	cmd[1] = 0x00;
 	skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
 				HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
 		return err;
 	}

 	kfree_skb(skb);

 	return 0;
 }

 int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 {
 	struct sk_buff *skb;
 	u8 cmd[9];
 	int err;

 	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
 	cmd[1] = 0x02; 			/* TAG ID */
 	cmd[2] = sizeof(bdaddr_t);	/* size */
 	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
 	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
 				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
 		return err;
 	}

 	kfree_skb(skb);

 	return 0;
 }
 EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);

 int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 		   enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
 		   const char *firmware_name)
 {
 	struct qca_fw_config config;
 	int err;
 	u8 rom_ver = 0;
 	u32 soc_ver;

 	bt_dev_dbg(hdev, "QCA setup on UART");

 	soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);

 	bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);

 	config.user_baud_rate = baudrate;

 	/* Firmware files to download are based on ROM version.
 	 * ROM version is derived from last two bytes of soc_ver.
 	 */
 	if (soc_type == QCA_WCN3988)
 		rom_ver = ((soc_ver & 0x00000f00) >> 0x05) | (soc_ver & 0x0000000f);
 	else
 		rom_ver = ((soc_ver & 0x00000f00) >> 0x04) | (soc_ver & 0x0000000f);

 	if (soc_type == QCA_WCN6750)
 		qca_send_patch_config_cmd(hdev);

 	/* Download rampatch file */
 	config.type = TLV_TYPE_PATCH;
 	switch (soc_type) {
 	case QCA_WCN3990:
 	case QCA_WCN3991:
 	case QCA_WCN3998:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/crbtfw%02x.tlv", rom_ver);
 		break;
 	case QCA_WCN3988:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/apbtfw%02x.tlv", rom_ver);
 		break;
 	case QCA_QCA6390:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/htbtfw%02x.tlv", rom_ver);
 		break;
 	case QCA_WCN6750:
 		/* Choose mbn file by default.If mbn file is not found
 		 * then choose tlv file
 		 */
 		config.type = ELF_TYPE_PATCH;
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/msbtfw%02x.mbn", rom_ver);
 		break;
 	case QCA_WCN6855:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/hpbtfw%02x.tlv", rom_ver);
 		break;
 	case QCA_WCN7850:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/hmtbtfw%02x.tlv", rom_ver);
 		break;
 	default:
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/rampatch_%08x.bin", soc_ver);
 	}

 	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
 	if (err < 0) {
 		bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
 		return err;
 	}

 	/* Give the controller some time to get ready to receive the NVM */
 	msleep(10);

 	/* Download NVM configuration */
 	config.type = TLV_TYPE_NVM;
 	if (firmware_name) {
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/%s", firmware_name);
 	} else {
 		switch (soc_type) {
 		case QCA_WCN3990:
 		case QCA_WCN3991:
 		case QCA_WCN3998:
 			if (le32_to_cpu(ver.soc_id) == QCA_WCN3991_SOC_ID) {
 				snprintf(config.fwname, sizeof(config.fwname),
 					 "qca/crnv%02xu.bin", rom_ver);
 			} else {
 				snprintf(config.fwname, sizeof(config.fwname),
 					 "qca/crnv%02x.bin", rom_ver);
 			}
 			break;
 		case QCA_WCN3988:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/apnv%02x.bin", rom_ver);
 			break;
 		case QCA_QCA6390:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/htnv%02x.bin", rom_ver);
 			break;
 		case QCA_WCN6750:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/msnv%02x.bin", rom_ver);
 			break;
 		case QCA_WCN6855:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/hpnv%02x.bin", rom_ver);
 			break;
 		case QCA_WCN7850:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/hmtnv%02x.bin", rom_ver);
 			break;

 		default:
 			snprintf(config.fwname, sizeof(config.fwname),
 				 "qca/nvm_%08x.bin", soc_ver);
 		}
 	}

 	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
 	if (err < 0) {
 		bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
 		return err;
 	}

 	switch (soc_type) {
 	case QCA_WCN3991:
 	case QCA_QCA6390:
 	case QCA_WCN6750:
 	case QCA_WCN6855:
 	case QCA_WCN7850:
 		err = qca_disable_soc_logging(hdev);
 		if (err < 0)
 			return err;
 		break;
 	default:
 		break;
 	}

 	/* WCN399x and WCN6750 supports the Microsoft vendor extension with 0xFD70 as the
 	 * VsMsftOpCode.
 	 */
 	switch (soc_type) {
 	case QCA_WCN3988:
 	case QCA_WCN3990:
 	case QCA_WCN3991:
 	case QCA_WCN3998:
 	case QCA_WCN6750:
 		hci_set_msft_opcode(hdev, 0xFD70);
 		break;
 	default:
 		break;
 	}

 	/* Perform HCI reset */
 	err = qca_send_reset(hdev);
 	if (err < 0) {
 		bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
 		return err;
 	}

 	switch (soc_type) {
 	case QCA_WCN3991:
 	case QCA_WCN6750:
 	case QCA_WCN6855:
 	case QCA_WCN7850:
 		/* get fw build info */
 		err = qca_read_fw_build_info(hdev);
 		if (err < 0)
 			return err;
 		break;
 	default:
 		break;
 	}

 	bt_dev_info(hdev, "QCA setup on UART is completed");

 	return 0;
 }
 EXPORT_SYMBOL_GPL(qca_uart_setup);

 int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 {
 	struct sk_buff *skb;
 	int err;

 	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
 				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
 		return err;
 	}

 	kfree_skb(skb);

 	return 0;
 }
 EXPORT_SYMBOL_GPL(qca_set_bdaddr);


 MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
 MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Bluetooth supports for Qualcomm Atheros chips
	*
	* Copyright (c) 2015 The Linux Foundation. All rights reserved.
	*/
	#include <linux/module.h>
	#include <linux/firmware.h>
	#include <linux/vmalloc.h>

	#include <net/bluetooth/bluetooth.h>
	#include <net/bluetooth/hci_core.h>

	#include "btqca.h"

	#define VERSION "0.1"

	int qca_read_soc_version(struct hci_dev hdev, struct qca_btsoc_version ver,
	enum qca_btsoc_type soc_type)
	{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	char cmd;
	int err = 0;
	u8 event_type = HCI_EV_VENDOR;
	u8 rlen = sizeof(edl) + sizeof(ver);
	u8 rtype = EDL_APP_VER_RES_EVT;

	bt_dev_dbg(hdev, "QCA Version Request");

	/* Unlike other SoC's sending version command response as payload to
	* VSE event. WCN3991 sends version command response as a payload to
	* command complete event.
	*/
	if (soc_type >= QCA_WCN3991) {
	event_type = 0;
	rlen += 1;
	rtype = EDL_PATCH_VER_REQ_CMD;
	}

	cmd = EDL_PATCH_VER_REQ_CMD;
	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
	&cmd, event_type, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "Reading QCA version information failed (%d)",
	err);
	return err;
	}

	if (skb->len != rlen) {
	bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
	err = -EILSEQ;
	goto out;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
	bt_dev_err(hdev, "QCA TLV with no header");
	err = -EILSEQ;
	goto out;
	}

	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
	edl->rtype != rtype) {
	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
	edl->rtype);
	err = -EIO;
	goto out;
	}

	if (soc_type >= QCA_WCN3991)
	memcpy(ver, edl->data + 1, sizeof(*ver));
	else
	memcpy(ver, &edl->data, sizeof(*ver));

	bt_dev_info(hdev, "QCA Product ID :0x%08x",
	le32_to_cpu(ver->product_id));
	bt_dev_info(hdev, "QCA SOC Version :0x%08x",
	le32_to_cpu(ver->soc_id));
	bt_dev_info(hdev, "QCA ROM Version :0x%08x",
	le16_to_cpu(ver->rom_ver));
	bt_dev_info(hdev, "QCA Patch Version:0x%08x",
	le16_to_cpu(ver->patch_ver));

	if (ver->soc_id == 0 \|\| ver->rom_ver == 0)
	err = -EILSEQ;

	out:
	kfree_skb(skb);
	if (err)
	bt_dev_err(hdev, "QCA Failed to get version (%d)", err);

	return err;
	}
	EXPORT_SYMBOL_GPL(qca_read_soc_version);

	static int qca_read_fw_build_info(struct hci_dev *hdev)
	{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	char cmd, build_label[QCA_FW_BUILD_VER_LEN];
	int build_lbl_len, err = 0;

	bt_dev_dbg(hdev, "QCA read fw build info");

	cmd = EDL_GET_BUILD_INFO_CMD;
	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
	&cmd, 0, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "Reading QCA fw build info failed (%d)",
	err);
	return err;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
	bt_dev_err(hdev, "QCA read fw build info with no header");
	err = -EILSEQ;
	goto out;
	}

	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
	edl->rtype != EDL_GET_BUILD_INFO_CMD) {
	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
	edl->rtype);
	err = -EIO;
	goto out;
	}

	build_lbl_len = edl->data[0];
	if (build_lbl_len <= QCA_FW_BUILD_VER_LEN - 1) {
	memcpy(build_label, edl->data + 1, build_lbl_len);
	*(build_label + build_lbl_len) = '\0';
	}

	hci_set_fw_info(hdev, "%s", build_label);

	out:
	kfree_skb(skb);
	return err;
	}

	static int qca_send_patch_config_cmd(struct hci_dev *hdev)
	{
	const u8 cmd[] = { EDL_PATCH_CONFIG_CMD, 0x01, 0, 0, 0 };
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	int err;

	bt_dev_dbg(hdev, "QCA Patch config");

	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, sizeof(cmd),
	cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "Sending QCA Patch config failed (%d)", err);
	return err;
	}

	if (skb->len != 2) {
	bt_dev_err(hdev, "QCA Patch config cmd size mismatch len %d", skb->len);
	err = -EILSEQ;
	goto out;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
	bt_dev_err(hdev, "QCA Patch config with no header");
	err = -EILSEQ;
	goto out;
	}

	if (edl->cresp != EDL_PATCH_CONFIG_RES_EVT \|\| edl->rtype != EDL_PATCH_CONFIG_CMD) {
	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
	edl->rtype);
	err = -EIO;
	goto out;
	}

	err = 0;

	out:
	kfree_skb(skb);
	return err;
	}

	static int qca_send_reset(struct hci_dev *hdev)
	{
	struct sk_buff *skb;
	int err;

	bt_dev_dbg(hdev, "QCA HCI_RESET");

	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA Reset failed (%d)", err);
	return err;
	}

	kfree_skb(skb);

	return 0;
	}

	int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
	{
	struct sk_buff *skb;
	int err;

	bt_dev_dbg(hdev, "QCA pre shutdown cmd");

	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
	NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);

	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
	return err;
	}

	kfree_skb(skb);

	return 0;
	}
	EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);

	static void qca_tlv_check_data(struct hci_dev *hdev,
	struct qca_fw_config *config,
	u8 *fw_data, enum qca_btsoc_type soc_type)
	{
	const u8 *data;
	u32 type_len;
	u16 tag_id, tag_len;
	int idx, length;
	struct tlv_type_hdr *tlv;
	struct tlv_type_patch *tlv_patch;
	struct tlv_type_nvm *tlv_nvm;
	uint8_t nvm_baud_rate = config->user_baud_rate;

	config->dnld_mode = QCA_SKIP_EVT_NONE;
	config->dnld_type = QCA_SKIP_EVT_NONE;

	switch (config->type) {
	case ELF_TYPE_PATCH:
	config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
	config->dnld_type = QCA_SKIP_EVT_VSE_CC;

	bt_dev_dbg(hdev, "File Class : 0x%x", fw_data[4]);
	bt_dev_dbg(hdev, "Data Encoding : 0x%x", fw_data[5]);
	bt_dev_dbg(hdev, "File version : 0x%x", fw_data[6]);
	break;
	case TLV_TYPE_PATCH:
	tlv = (struct tlv_type_hdr *)fw_data;
	type_len = le32_to_cpu(tlv->type_len);
	tlv_patch = (struct tlv_type_patch *)tlv->data;

	/* For Rome version 1.1 to 3.1, all segment commands
	* are acked by a vendor specific event (VSE).
	* For Rome >= 3.2, the download mode field indicates
	* if VSE is skipped by the controller.
	* In case VSE is skipped, only the last segment is acked.
	*/
	config->dnld_mode = tlv_patch->download_mode;
	config->dnld_type = config->dnld_mode;

	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	BT_DBG("Total Length : %d bytes",
	le32_to_cpu(tlv_patch->total_size));
	BT_DBG("Patch Data Length : %d bytes",
	le32_to_cpu(tlv_patch->data_length));
	BT_DBG("Signing Format Version : 0x%x",
	tlv_patch->format_version);
	BT_DBG("Signature Algorithm : 0x%x",
	tlv_patch->signature);
	BT_DBG("Download mode : 0x%x",
	tlv_patch->download_mode);
	BT_DBG("Reserved : 0x%x",
	tlv_patch->reserved1);
	BT_DBG("Product ID : 0x%04x",
	le16_to_cpu(tlv_patch->product_id));
	BT_DBG("Rom Build Version : 0x%04x",
	le16_to_cpu(tlv_patch->rom_build));
	BT_DBG("Patch Version : 0x%04x",
	le16_to_cpu(tlv_patch->patch_version));
	BT_DBG("Reserved : 0x%x",
	le16_to_cpu(tlv_patch->reserved2));
	BT_DBG("Patch Entry Address : 0x%x",
	le32_to_cpu(tlv_patch->entry));
	break;

	case TLV_TYPE_NVM:
	tlv = (struct tlv_type_hdr *)fw_data;

	type_len = le32_to_cpu(tlv->type_len);
	length = (type_len >> 8) & 0x00ffffff;

	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	BT_DBG("Length\t\t : %d bytes", length);

	idx = 0;
	data = tlv->data;
	while (idx < length) {
	tlv_nvm = (struct tlv_type_nvm *)(data + idx);

	tag_id = le16_to_cpu(tlv_nvm->tag_id);
	tag_len = le16_to_cpu(tlv_nvm->tag_len);

	/* Update NVM tags as needed */
	switch (tag_id) {
	case EDL_TAG_ID_HCI:
	/* HCI transport layer parameters
	* enabling software inband sleep
	* onto controller side.
	*/
	tlv_nvm->data[0] \|= 0x80;

	/* UART Baud Rate */
	if (soc_type >= QCA_WCN3991)
	tlv_nvm->data[1] = nvm_baud_rate;
	else
	tlv_nvm->data[2] = nvm_baud_rate;

	break;

	case EDL_TAG_ID_DEEP_SLEEP:
	/* Sleep enable mask
	* enabling deep sleep feature on controller.
	*/
	tlv_nvm->data[0] \|= 0x01;

	break;
	}

	idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
	}
	break;

	default:
	BT_ERR("Unknown TLV type %d", config->type);
	break;
	}
	}

	static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
	const u8 *data, enum qca_tlv_dnld_mode mode,
	enum qca_btsoc_type soc_type)
	{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	struct tlv_seg_resp *tlv_resp;
	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
	int err = 0;
	u8 event_type = HCI_EV_VENDOR;
	u8 rlen = (sizeof(edl) + sizeof(tlv_resp));
	u8 rtype = EDL_TVL_DNLD_RES_EVT;

	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
	cmd[1] = seg_size;
	memcpy(cmd + 2, data, seg_size);

	if (mode == QCA_SKIP_EVT_VSE_CC \|\| mode == QCA_SKIP_EVT_VSE)
	return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
	cmd);

	/* Unlike other SoC's sending version command response as payload to
	* VSE event. WCN3991 sends version command response as a payload to
	* command complete event.
	*/
	if (soc_type >= QCA_WCN3991) {
	event_type = 0;
	rlen = sizeof(*edl);
	rtype = EDL_PATCH_TLV_REQ_CMD;
	}

	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
	event_type, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
	return err;
	}

	if (skb->len != rlen) {
	bt_dev_err(hdev, "QCA TLV response size mismatch");
	err = -EILSEQ;
	goto out;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
	bt_dev_err(hdev, "TLV with no header");
	err = -EILSEQ;
	goto out;
	}

	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\| edl->rtype != rtype) {
	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
	edl->cresp, edl->rtype);
	err = -EIO;
	}

	if (soc_type >= QCA_WCN3991)
	goto out;

	tlv_resp = (struct tlv_seg_resp *)(edl->data);
	if (tlv_resp->result) {
	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
	edl->cresp, edl->rtype, tlv_resp->result);
	}

	out:
	kfree_skb(skb);

	return err;
	}

	static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
	{
	struct hci_event_hdr *hdr;
	struct hci_ev_cmd_complete *evt;
	struct sk_buff *skb;

	skb = bt_skb_alloc(sizeof(hdr) + sizeof(evt) + 1, GFP_KERNEL);
	if (!skb)
	return -ENOMEM;

	hdr = skb_put(skb, sizeof(*hdr));
	hdr->evt = HCI_EV_CMD_COMPLETE;
	hdr->plen = sizeof(*evt) + 1;

	evt = skb_put(skb, sizeof(*evt));
	evt->ncmd = 1;
	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);

	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);

	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;

	return hci_recv_frame(hdev, skb);
	}

	static int qca_download_firmware(struct hci_dev *hdev,
	struct qca_fw_config *config,
	enum qca_btsoc_type soc_type,
	u8 rom_ver)
	{
	const struct firmware *fw;
	u8 *data;
	const u8 *segment;
	int ret, size, remain, i = 0;

	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);

	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	if (ret) {
	/* For WCN6750, if mbn file is not present then check for
	* tlv file.
	*/
	if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
	bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
	config->fwname, ret);
	config->type = TLV_TYPE_PATCH;
	snprintf(config->fwname, sizeof(config->fwname),
	"qca/msbtfw%02x.tlv", rom_ver);
	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	if (ret) {
	bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
	config->fwname, ret);
	return ret;
	}
	} else {
	bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
	config->fwname, ret);
	return ret;
	}
	}

	size = fw->size;
	data = vmalloc(fw->size);
	if (!data) {
	bt_dev_err(hdev, "QCA Failed to allocate memory for file: %s",
	config->fwname);
	release_firmware(fw);
	return -ENOMEM;
	}

	memcpy(data, fw->data, size);
	release_firmware(fw);

	qca_tlv_check_data(hdev, config, data, soc_type);

	segment = data;
	remain = size;
	while (remain > 0) {
	int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);

	bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);

	remain -= segsize;
	/* The last segment is always acked regardless download mode */
	if (!remain \|\| segsize < MAX_SIZE_PER_TLV_SEGMENT)
	config->dnld_mode = QCA_SKIP_EVT_NONE;

	ret = qca_tlv_send_segment(hdev, segsize, segment,
	config->dnld_mode, soc_type);
	if (ret)
	goto out;

	segment += segsize;
	}

	/* Latest qualcomm chipsets are not sending a command complete event
	* for every fw packet sent. They only respond with a vendor specific
	* event for the last packet. This optimization in the chip will
	* decrease the BT in initialization time. Here we will inject a command
	* complete event to avoid a command timeout error message.
	*/
	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC \|\|
	config->dnld_type == QCA_SKIP_EVT_VSE)
	ret = qca_inject_cmd_complete_event(hdev);

	out:
	vfree(data);

	return ret;
	}

	static int qca_disable_soc_logging(struct hci_dev *hdev)
	{
	struct sk_buff *skb;
	u8 cmd[2];
	int err;

	cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
	cmd[1] = 0x00;
	skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
	HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
	return err;
	}

	kfree_skb(skb);

	return 0;
	}

	int qca_set_bdaddr_rome(struct hci_dev hdev, const bdaddr_t bdaddr)
	{
	struct sk_buff *skb;
	u8 cmd[9];
	int err;

	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
	cmd[1] = 0x02; /* TAG ID */
	cmd[2] = sizeof(bdaddr_t); /* size */
	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
	return err;
	}

	kfree_skb(skb);

	return 0;
	}
	EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);

	int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
	enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
	const char *firmware_name)
	{
	struct qca_fw_config config;
	int err;
	u8 rom_ver = 0;
	u32 soc_ver;

	bt_dev_dbg(hdev, "QCA setup on UART");

	soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);

	bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);

	config.user_baud_rate = baudrate;

	/* Firmware files to download are based on ROM version.
	* ROM version is derived from last two bytes of soc_ver.
	*/
	if (soc_type == QCA_WCN3988)
	rom_ver = ((soc_ver & 0x00000f00) >> 0x05) \| (soc_ver & 0x0000000f);
	else
	rom_ver = ((soc_ver & 0x00000f00) >> 0x04) \| (soc_ver & 0x0000000f);

	if (soc_type == QCA_WCN6750)
	qca_send_patch_config_cmd(hdev);

	/* Download rampatch file */
	config.type = TLV_TYPE_PATCH;
	switch (soc_type) {
	case QCA_WCN3990:
	case QCA_WCN3991:
	case QCA_WCN3998:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/crbtfw%02x.tlv", rom_ver);
	break;
	case QCA_WCN3988:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/apbtfw%02x.tlv", rom_ver);
	break;
	case QCA_QCA6390:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/htbtfw%02x.tlv", rom_ver);
	break;
	case QCA_WCN6750:
	/* Choose mbn file by default.If mbn file is not found
	* then choose tlv file
	*/
	config.type = ELF_TYPE_PATCH;
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/msbtfw%02x.mbn", rom_ver);
	break;
	case QCA_WCN6855:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/hpbtfw%02x.tlv", rom_ver);
	break;
	case QCA_WCN7850:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/hmtbtfw%02x.tlv", rom_ver);
	break;
	default:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/rampatch_%08x.bin", soc_ver);
	}

	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
	if (err < 0) {
	bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
	return err;
	}

	/* Give the controller some time to get ready to receive the NVM */
	msleep(10);

	/* Download NVM configuration */
	config.type = TLV_TYPE_NVM;
	if (firmware_name) {
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/%s", firmware_name);
	} else {
	switch (soc_type) {
	case QCA_WCN3990:
	case QCA_WCN3991:
	case QCA_WCN3998:
	if (le32_to_cpu(ver.soc_id) == QCA_WCN3991_SOC_ID) {
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/crnv%02xu.bin", rom_ver);
	} else {
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/crnv%02x.bin", rom_ver);
	}
	break;
	case QCA_WCN3988:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/apnv%02x.bin", rom_ver);
	break;
	case QCA_QCA6390:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/htnv%02x.bin", rom_ver);
	break;
	case QCA_WCN6750:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/msnv%02x.bin", rom_ver);
	break;
	case QCA_WCN6855:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/hpnv%02x.bin", rom_ver);
	break;
	case QCA_WCN7850:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/hmtnv%02x.bin", rom_ver);
	break;

	default:
	snprintf(config.fwname, sizeof(config.fwname),
	"qca/nvm_%08x.bin", soc_ver);
	}
	}

	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
	if (err < 0) {
	bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
	return err;
	}

	switch (soc_type) {
	case QCA_WCN3991:
	case QCA_QCA6390:
	case QCA_WCN6750:
	case QCA_WCN6855:
	case QCA_WCN7850:
	err = qca_disable_soc_logging(hdev);
	if (err < 0)
	return err;
	break;
	default:
	break;
	}

	/* WCN399x and WCN6750 supports the Microsoft vendor extension with 0xFD70 as the
	* VsMsftOpCode.
	*/
	switch (soc_type) {
	case QCA_WCN3988:
	case QCA_WCN3990:
	case QCA_WCN3991:
	case QCA_WCN3998:
	case QCA_WCN6750:
	hci_set_msft_opcode(hdev, 0xFD70);
	break;
	default:
	break;
	}

	/* Perform HCI reset */
	err = qca_send_reset(hdev);
	if (err < 0) {
	bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
	return err;
	}

	switch (soc_type) {
	case QCA_WCN3991:
	case QCA_WCN6750:
	case QCA_WCN6855:
	case QCA_WCN7850:
	/* get fw build info */
	err = qca_read_fw_build_info(hdev);
	if (err < 0)
	return err;
	break;
	default:
	break;
	}

	bt_dev_info(hdev, "QCA setup on UART is completed");

	return 0;
	}
	EXPORT_SYMBOL_GPL(qca_uart_setup);

	int qca_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	{
	struct sk_buff *skb;
	int err;

	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
	err = PTR_ERR(skb);
	bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
	return err;
	}

	kfree_skb(skb);

	return 0;
	}
	EXPORT_SYMBOL_GPL(qca_set_bdaddr);


	MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
	MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
	MODULE_VERSION(VERSION);
	MODULE_LICENSE("GPL");