drivers/nfc/st-nci/vendor_cmds.c - vendor/opensource/backports - Git at Google

 /*
  * Proprietary commands extension for STMicroelectronics NFC NCI Chip
  *
  * Copyright (C) 2014-2015  STMicroelectronics SAS. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */

 #include <net/genetlink.h>
 #include <linux/module.h>
 #include <linux/nfc.h>
 #include <linux/delay.h>
 #include <net/nfc/nci_core.h>

 #include "st-nci.h"

 #define ST_NCI_HCI_DM_GETDATA			0x10
 #define ST_NCI_HCI_DM_PUTDATA			0x11
 #define ST_NCI_HCI_DM_LOAD			0x12
 #define ST_NCI_HCI_DM_GETINFO			0x13
 #define ST_NCI_HCI_DM_FWUPD_START		0x14
 #define ST_NCI_HCI_DM_FWUPD_STOP		0x15
 #define ST_NCI_HCI_DM_UPDATE_AID		0x20
 #define ST_NCI_HCI_DM_RESET			0x3e

 #define ST_NCI_HCI_DM_FIELD_GENERATOR		0x32
 #define ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE	0x33
 #define ST_NCI_HCI_DM_VDC_VALUE_COMPARISON	0x34

 #define ST_NCI_FACTORY_MODE_ON			1
 #define ST_NCI_FACTORY_MODE_OFF			0

 #define ST_NCI_EVT_POST_DATA			0x02

 struct get_param_data {
 	u8 gate;
 	u8 data;
 } __packed;

 static int st_nci_factory_mode(struct nfc_dev *dev, void *data,
 			       size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);
 	struct st_nci_info *info = nci_get_drvdata(ndev);

 	if (data_len != 1)
 		return -EINVAL;

 	pr_debug("factory mode: %x\n", ((u8 *)data)[0]);

 	switch (((u8 *)data)[0]) {
 	case ST_NCI_FACTORY_MODE_ON:
 		test_and_set_bit(ST_NCI_FACTORY_MODE, &info->flags);
 	break;
 	case ST_NCI_FACTORY_MODE_OFF:
 		clear_bit(ST_NCI_FACTORY_MODE, &info->flags);
 	break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int st_nci_hci_clear_all_pipes(struct nfc_dev *dev, void *data,
 				      size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	return nci_hci_clear_all_pipes(ndev);
 }

 static int st_nci_hci_dm_put_data(struct nfc_dev *dev, void *data,
 				  size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 				ST_NCI_HCI_DM_PUTDATA, data,
 				data_len, NULL);
 }

 static int st_nci_hci_dm_update_aid(struct nfc_dev *dev, void *data,
 				    size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			ST_NCI_HCI_DM_UPDATE_AID, data, data_len, NULL);
 }

 static int st_nci_hci_dm_get_info(struct nfc_dev *dev, void *data,
 				  size_t data_len)
 {
 	int r;
 	struct sk_buff *msg, *skb;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETINFO,
 			     data, data_len, &skb);
 	if (r)
 		goto exit;

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 					     HCI_DM_GET_INFO, skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);

 free_skb:
 	kfree_skb(skb);
 exit:
 	return r;
 }

 static int st_nci_hci_dm_get_data(struct nfc_dev *dev, void *data,
 				  size_t data_len)
 {
 	int r;
 	struct sk_buff *msg, *skb;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETDATA,
 			     data, data_len, &skb);
 	if (r)
 		goto exit;

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 					     HCI_DM_GET_DATA, skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);

 free_skb:
 	kfree_skb(skb);
 exit:
 	return r;
 }

 static int st_nci_hci_dm_fwupd_start(struct nfc_dev *dev, void *data,
 				     size_t data_len)
 {
 	int r;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	dev->fw_download_in_progress = true;
 	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			ST_NCI_HCI_DM_FWUPD_START, data, data_len, NULL);
 	if (r)
 		dev->fw_download_in_progress = false;

 	return r;
 }

 static int st_nci_hci_dm_fwupd_end(struct nfc_dev *dev, void *data,
 				   size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			ST_NCI_HCI_DM_FWUPD_STOP, data, data_len, NULL);
 }

 static int st_nci_hci_dm_direct_load(struct nfc_dev *dev, void *data,
 				     size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	if (dev->fw_download_in_progress) {
 		dev->fw_download_in_progress = false;
 		return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 				ST_NCI_HCI_DM_LOAD, data, data_len, NULL);
 	}
 	return -EPROTO;
 }

 static int st_nci_hci_dm_reset(struct nfc_dev *dev, void *data,
 			       size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			ST_NCI_HCI_DM_RESET, data, data_len, NULL);
 	msleep(200);

 	return 0;
 }

 static int st_nci_hci_get_param(struct nfc_dev *dev, void *data,
 				size_t data_len)
 {
 	int r;
 	struct sk_buff *msg, *skb;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);
 	struct get_param_data *param = (struct get_param_data *)data;

 	if (data_len < sizeof(struct get_param_data))
 		return -EPROTO;

 	r = nci_hci_get_param(ndev, param->gate, param->data, &skb);
 	if (r)
 		goto exit;

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 					     HCI_GET_PARAM, skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);

 free_skb:
 	kfree_skb(skb);
 exit:
 	return r;
 }

 static int st_nci_hci_dm_field_generator(struct nfc_dev *dev, void *data,
 					 size_t data_len)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 				ST_NCI_HCI_DM_FIELD_GENERATOR, data, data_len, NULL);
 }

 static int st_nci_hci_dm_vdc_measurement_value(struct nfc_dev *dev, void *data,
 					       size_t data_len)
 {
 	int r;
 	struct sk_buff *msg, *skb;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	if (data_len != 4)
 		return -EPROTO;

 	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			     ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE,
 			     data, data_len, &skb);
 	if (r)
 		goto exit;

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 				HCI_DM_VDC_MEASUREMENT_VALUE, skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);

 free_skb:
 	kfree_skb(skb);
 exit:
 	return r;
 }

 static int st_nci_hci_dm_vdc_value_comparison(struct nfc_dev *dev, void *data,
 					      size_t data_len)
 {
 	int r;
 	struct sk_buff *msg, *skb;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	if (data_len != 2)
 		return -EPROTO;

 	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
 			     ST_NCI_HCI_DM_VDC_VALUE_COMPARISON,
 			     data, data_len, &skb);
 	if (r)
 		goto exit;

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 					HCI_DM_VDC_VALUE_COMPARISON, skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);

 free_skb:
 	kfree_skb(skb);
 exit:
 	return r;
 }

 void st_nci_hci_loopback_event_received(struct nci_dev *ndev, u8 event,
 					struct sk_buff *skb)
 {
 	struct st_nci_info *info = nci_get_drvdata(ndev);

 	switch (event) {
 	case ST_NCI_EVT_POST_DATA:
 		info->vendor_info.rx_skb = skb;
 	break;
 	default:
 		nfc_err(&ndev->nfc_dev->dev, "Unexpected event on loopback gate\n");
 	}
 	complete(&info->vendor_info.req_completion);
 }
 EXPORT_SYMBOL(st_nci_hci_loopback_event_received);

 static int st_nci_hci_loopback(struct nfc_dev *dev, void *data,
 			       size_t data_len)
 {
 	int r;
 	struct sk_buff *msg;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);
 	struct st_nci_info *info = nci_get_drvdata(ndev);

 	if (data_len <= 0)
 		return -EPROTO;

 	reinit_completion(&info->vendor_info.req_completion);
 	info->vendor_info.rx_skb = NULL;

 	r = nci_hci_send_event(ndev, NCI_HCI_LOOPBACK_GATE,
 			       ST_NCI_EVT_POST_DATA, data, data_len);
 	if (r != data_len) {
 		r = -EPROTO;
 		goto exit;
 	}

 	wait_for_completion_interruptible(&info->vendor_info.req_completion);

 	if (!info->vendor_info.rx_skb ||
 	    info->vendor_info.rx_skb->len != data_len) {
 		r = -EPROTO;
 		goto exit;
 	}

 	msg = nfc_vendor_cmd_alloc_reply_skb(ndev->nfc_dev,
 					ST_NCI_VENDOR_OUI,
 					HCI_LOOPBACK,
 					info->vendor_info.rx_skb->len);
 	if (!msg) {
 		r = -ENOMEM;
 		goto free_skb;
 	}

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, info->vendor_info.rx_skb->len,
 		    info->vendor_info.rx_skb->data)) {
 		kfree_skb(msg);
 		r = -ENOBUFS;
 		goto free_skb;
 	}

 	r = nfc_vendor_cmd_reply(msg);
 free_skb:
 	kfree_skb(info->vendor_info.rx_skb);
 exit:
 	return r;
 }

 static int st_nci_manufacturer_specific(struct nfc_dev *dev, void *data,
 					size_t data_len)
 {
 	struct sk_buff *msg;
 	struct nci_dev *ndev = nfc_get_drvdata(dev);

 	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
 					MANUFACTURER_SPECIFIC,
 					sizeof(ndev->manufact_specific_info));
 	if (!msg)
 		return -ENOMEM;

 	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, sizeof(ndev->manufact_specific_info),
 		    &ndev->manufact_specific_info)) {
 		kfree_skb(msg);
 		return -ENOBUFS;
 	}

 	return nfc_vendor_cmd_reply(msg);
 }

 static struct nfc_vendor_cmd st_nci_vendor_cmds[] = {
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = FACTORY_MODE,
 		.doit = st_nci_factory_mode,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_CLEAR_ALL_PIPES,
 		.doit = st_nci_hci_clear_all_pipes,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_PUT_DATA,
 		.doit = st_nci_hci_dm_put_data,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_UPDATE_AID,
 		.doit = st_nci_hci_dm_update_aid,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_GET_INFO,
 		.doit = st_nci_hci_dm_get_info,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_GET_DATA,
 		.doit = st_nci_hci_dm_get_data,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_DIRECT_LOAD,
 		.doit = st_nci_hci_dm_direct_load,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_RESET,
 		.doit = st_nci_hci_dm_reset,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_GET_PARAM,
 		.doit = st_nci_hci_get_param,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_FIELD_GENERATOR,
 		.doit = st_nci_hci_dm_field_generator,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_FWUPD_START,
 		.doit = st_nci_hci_dm_fwupd_start,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_FWUPD_END,
 		.doit = st_nci_hci_dm_fwupd_end,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_LOOPBACK,
 		.doit = st_nci_hci_loopback,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_VDC_MEASUREMENT_VALUE,
 		.doit = st_nci_hci_dm_vdc_measurement_value,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = HCI_DM_VDC_VALUE_COMPARISON,
 		.doit = st_nci_hci_dm_vdc_value_comparison,
 	},
 	{
 		.vendor_id = ST_NCI_VENDOR_OUI,
 		.subcmd = MANUFACTURER_SPECIFIC,
 		.doit = st_nci_manufacturer_specific,
 	},
 };

 int st_nci_vendor_cmds_init(struct nci_dev *ndev)
 {
 	struct st_nci_info *info = nci_get_drvdata(ndev);

 	init_completion(&info->vendor_info.req_completion);
 	return nfc_set_vendor_cmds(ndev->nfc_dev, st_nci_vendor_cmds,
 				   sizeof(st_nci_vendor_cmds));
 }
 EXPORT_SYMBOL(st_nci_vendor_cmds_init);
	/*
	* Proprietary commands extension for STMicroelectronics NFC NCI Chip
	*
	* Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms and conditions of the GNU General Public License,
	* version 2, as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include <net/genetlink.h>
	#include <linux/module.h>
	#include <linux/nfc.h>
	#include <linux/delay.h>
	#include <net/nfc/nci_core.h>

	#include "st-nci.h"

	#define ST_NCI_HCI_DM_GETDATA 0x10
	#define ST_NCI_HCI_DM_PUTDATA 0x11
	#define ST_NCI_HCI_DM_LOAD 0x12
	#define ST_NCI_HCI_DM_GETINFO 0x13
	#define ST_NCI_HCI_DM_FWUPD_START 0x14
	#define ST_NCI_HCI_DM_FWUPD_STOP 0x15
	#define ST_NCI_HCI_DM_UPDATE_AID 0x20
	#define ST_NCI_HCI_DM_RESET 0x3e

	#define ST_NCI_HCI_DM_FIELD_GENERATOR 0x32
	#define ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE 0x33
	#define ST_NCI_HCI_DM_VDC_VALUE_COMPARISON 0x34

	#define ST_NCI_FACTORY_MODE_ON 1
	#define ST_NCI_FACTORY_MODE_OFF 0

	#define ST_NCI_EVT_POST_DATA 0x02

	struct get_param_data {
	u8 gate;
	u8 data;
	} __packed;

	static int st_nci_factory_mode(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);
	struct st_nci_info *info = nci_get_drvdata(ndev);

	if (data_len != 1)
	return -EINVAL;

	pr_debug("factory mode: %x\n", ((u8 *)data)[0]);

	switch (((u8 *)data)[0]) {
	case ST_NCI_FACTORY_MODE_ON:
	test_and_set_bit(ST_NCI_FACTORY_MODE, &info->flags);
	break;
	case ST_NCI_FACTORY_MODE_OFF:
	clear_bit(ST_NCI_FACTORY_MODE, &info->flags);
	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static int st_nci_hci_clear_all_pipes(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	return nci_hci_clear_all_pipes(ndev);
	}

	static int st_nci_hci_dm_put_data(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_PUTDATA, data,
	data_len, NULL);
	}

	static int st_nci_hci_dm_update_aid(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_UPDATE_AID, data, data_len, NULL);
	}

	static int st_nci_hci_dm_get_info(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff msg, skb;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETINFO,
	data, data_len, &skb);
	if (r)
	goto exit;

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	HCI_DM_GET_INFO, skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);

	free_skb:
	kfree_skb(skb);
	exit:
	return r;
	}

	static int st_nci_hci_dm_get_data(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff msg, skb;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETDATA,
	data, data_len, &skb);
	if (r)
	goto exit;

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	HCI_DM_GET_DATA, skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);

	free_skb:
	kfree_skb(skb);
	exit:
	return r;
	}

	static int st_nci_hci_dm_fwupd_start(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	dev->fw_download_in_progress = true;
	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_FWUPD_START, data, data_len, NULL);
	if (r)
	dev->fw_download_in_progress = false;

	return r;
	}

	static int st_nci_hci_dm_fwupd_end(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_FWUPD_STOP, data, data_len, NULL);
	}

	static int st_nci_hci_dm_direct_load(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	if (dev->fw_download_in_progress) {
	dev->fw_download_in_progress = false;
	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_LOAD, data, data_len, NULL);
	}
	return -EPROTO;
	}

	static int st_nci_hci_dm_reset(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_RESET, data, data_len, NULL);
	msleep(200);

	return 0;
	}

	static int st_nci_hci_get_param(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff msg, skb;
	struct nci_dev *ndev = nfc_get_drvdata(dev);
	struct get_param_data param = (struct get_param_data )data;

	if (data_len < sizeof(struct get_param_data))
	return -EPROTO;

	r = nci_hci_get_param(ndev, param->gate, param->data, &skb);
	if (r)
	goto exit;

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	HCI_GET_PARAM, skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);

	free_skb:
	kfree_skb(skb);
	exit:
	return r;
	}

	static int st_nci_hci_dm_field_generator(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_FIELD_GENERATOR, data, data_len, NULL);
	}

	static int st_nci_hci_dm_vdc_measurement_value(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff msg, skb;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	if (data_len != 4)
	return -EPROTO;

	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE,
	data, data_len, &skb);
	if (r)
	goto exit;

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	HCI_DM_VDC_MEASUREMENT_VALUE, skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);

	free_skb:
	kfree_skb(skb);
	exit:
	return r;
	}

	static int st_nci_hci_dm_vdc_value_comparison(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff msg, skb;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	if (data_len != 2)
	return -EPROTO;

	r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
	ST_NCI_HCI_DM_VDC_VALUE_COMPARISON,
	data, data_len, &skb);
	if (r)
	goto exit;

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	HCI_DM_VDC_VALUE_COMPARISON, skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);

	free_skb:
	kfree_skb(skb);
	exit:
	return r;
	}

	void st_nci_hci_loopback_event_received(struct nci_dev *ndev, u8 event,
	struct sk_buff *skb)
	{
	struct st_nci_info *info = nci_get_drvdata(ndev);

	switch (event) {
	case ST_NCI_EVT_POST_DATA:
	info->vendor_info.rx_skb = skb;
	break;
	default:
	nfc_err(&ndev->nfc_dev->dev, "Unexpected event on loopback gate\n");
	}
	complete(&info->vendor_info.req_completion);
	}
	EXPORT_SYMBOL(st_nci_hci_loopback_event_received);

	static int st_nci_hci_loopback(struct nfc_dev dev, void data,
	size_t data_len)
	{
	int r;
	struct sk_buff *msg;
	struct nci_dev *ndev = nfc_get_drvdata(dev);
	struct st_nci_info *info = nci_get_drvdata(ndev);

	if (data_len <= 0)
	return -EPROTO;

	reinit_completion(&info->vendor_info.req_completion);
	info->vendor_info.rx_skb = NULL;

	r = nci_hci_send_event(ndev, NCI_HCI_LOOPBACK_GATE,
	ST_NCI_EVT_POST_DATA, data, data_len);
	if (r != data_len) {
	r = -EPROTO;
	goto exit;
	}

	wait_for_completion_interruptible(&info->vendor_info.req_completion);

	if (!info->vendor_info.rx_skb \|\|
	info->vendor_info.rx_skb->len != data_len) {
	r = -EPROTO;
	goto exit;
	}

	msg = nfc_vendor_cmd_alloc_reply_skb(ndev->nfc_dev,
	ST_NCI_VENDOR_OUI,
	HCI_LOOPBACK,
	info->vendor_info.rx_skb->len);
	if (!msg) {
	r = -ENOMEM;
	goto free_skb;
	}

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, info->vendor_info.rx_skb->len,
	info->vendor_info.rx_skb->data)) {
	kfree_skb(msg);
	r = -ENOBUFS;
	goto free_skb;
	}

	r = nfc_vendor_cmd_reply(msg);
	free_skb:
	kfree_skb(info->vendor_info.rx_skb);
	exit:
	return r;
	}

	static int st_nci_manufacturer_specific(struct nfc_dev dev, void data,
	size_t data_len)
	{
	struct sk_buff *msg;
	struct nci_dev *ndev = nfc_get_drvdata(dev);

	msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
	MANUFACTURER_SPECIFIC,
	sizeof(ndev->manufact_specific_info));
	if (!msg)
	return -ENOMEM;

	if (nla_put(msg, NFC_ATTR_VENDOR_DATA, sizeof(ndev->manufact_specific_info),
	&ndev->manufact_specific_info)) {
	kfree_skb(msg);
	return -ENOBUFS;
	}

	return nfc_vendor_cmd_reply(msg);
	}

	static struct nfc_vendor_cmd st_nci_vendor_cmds[] = {
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = FACTORY_MODE,
	.doit = st_nci_factory_mode,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_CLEAR_ALL_PIPES,
	.doit = st_nci_hci_clear_all_pipes,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_PUT_DATA,
	.doit = st_nci_hci_dm_put_data,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_UPDATE_AID,
	.doit = st_nci_hci_dm_update_aid,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_GET_INFO,
	.doit = st_nci_hci_dm_get_info,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_GET_DATA,
	.doit = st_nci_hci_dm_get_data,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_DIRECT_LOAD,
	.doit = st_nci_hci_dm_direct_load,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_RESET,
	.doit = st_nci_hci_dm_reset,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_GET_PARAM,
	.doit = st_nci_hci_get_param,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_FIELD_GENERATOR,
	.doit = st_nci_hci_dm_field_generator,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_FWUPD_START,
	.doit = st_nci_hci_dm_fwupd_start,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_FWUPD_END,
	.doit = st_nci_hci_dm_fwupd_end,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_LOOPBACK,
	.doit = st_nci_hci_loopback,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_VDC_MEASUREMENT_VALUE,
	.doit = st_nci_hci_dm_vdc_measurement_value,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = HCI_DM_VDC_VALUE_COMPARISON,
	.doit = st_nci_hci_dm_vdc_value_comparison,
	},
	{
	.vendor_id = ST_NCI_VENDOR_OUI,
	.subcmd = MANUFACTURER_SPECIFIC,
	.doit = st_nci_manufacturer_specific,
	},
	};

	int st_nci_vendor_cmds_init(struct nci_dev *ndev)
	{
	struct st_nci_info *info = nci_get_drvdata(ndev);

	init_completion(&info->vendor_info.req_completion);
	return nfc_set_vendor_cmds(ndev->nfc_dev, st_nci_vendor_cmds,
	sizeof(st_nci_vendor_cmds));
	}
	EXPORT_SYMBOL(st_nci_vendor_cmds_init);