NFC: remove TI nfcwilink driver

diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig
index 9d2369269abf..c4208487fadc 100644
--- a/drivers/nfc/Kconfig
+++ b/drivers/nfc/Kconfig
@@ -5,17 +5,6 @@ 
 menu "Near Field Communication (NFC) devices"
 	depends on NFC
 
-config NFC_WILINK
-	tristate "Texas Instruments NFC WiLink driver"
-	depends on TI_ST && NFC_NCI
-	help
-	  This enables the NFC driver for Texas Instrument's BT/FM/GPS/NFC
-	  combo devices. This makes use of shared transport line discipline
-	  core driver to communicate with the NFC core of the combo chip.
-
-	  Say Y here to compile support for Texas Instrument's NFC WiLink driver
-	  into the kernel or say M to compile it as module.
-
 config NFC_TRF7970A
 	tristate "Texas Instruments TRF7970a NFC driver"
 	depends on SPI && NFC_DIGITAL
diff --git a/drivers/nfc/Makefile b/drivers/nfc/Makefile
index bab8ef06ae35..640b7274371c 100644
--- a/drivers/nfc/Makefile
+++ b/drivers/nfc/Makefile
@@ -6,7 +6,6 @@  obj-$(CONFIG_NFC_FDP)		+= fdp/
 obj-$(CONFIG_NFC_PN544)		+= pn544/
 obj-$(CONFIG_NFC_MICROREAD)	+= microread/
 obj-$(CONFIG_NFC_PN533)		+= pn533/
-obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o
 obj-$(CONFIG_NFC_MEI_PHY)	+= mei_phy.o
 obj-$(CONFIG_NFC_SIM)		+= nfcsim.o
 obj-$(CONFIG_NFC_PORT100)	+= port100.o
diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c
deleted file mode 100644
index 3fbd18b8e473..000000000000
--- a/drivers/nfc/nfcwilink.c
+++ /dev/null
@@ -1,578 +0,0 @@ 
-/*
- *  Texas Instrument's NFC Driver For Shared Transport.
- *
- *  NFC Driver acts as interface between NCI core and
- *  TI Shared Transport Layer.
- *
- *  Copyright (C) 2011 Texas Instruments, Inc.
- *
- *  Written by Ilan Elias <ilane@ti.com>
- *
- *  Acknowledgements:
- *  This file is based on btwilink.c, which was written
- *  by Raja Mani and Pavan Savoy.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms 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 <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/firmware.h>
-#include <linux/nfc.h>
-#include <net/nfc/nci.h>
-#include <net/nfc/nci_core.h>
-#include <linux/ti_wilink_st.h>
-
-#define NFCWILINK_CHNL			12
-#define NFCWILINK_OPCODE		7
-#define NFCWILINK_MAX_FRAME_SIZE	300
-#define NFCWILINK_HDR_LEN		4
-#define NFCWILINK_OFFSET_LEN_IN_HDR	1
-#define NFCWILINK_LEN_SIZE		2
-#define NFCWILINK_REGISTER_TIMEOUT	8000	/* 8 sec */
-#define NFCWILINK_CMD_TIMEOUT		5000	/* 5 sec */
-
-#define BTS_FILE_NAME_MAX_SIZE		40
-#define BTS_FILE_HDR_MAGIC		0x42535442
-#define BTS_FILE_CMD_MAX_LEN		0xff
-#define BTS_FILE_ACTION_TYPE_SEND_CMD	1
-
-#define NCI_VS_NFCC_INFO_CMD_GID	0x2f
-#define NCI_VS_NFCC_INFO_CMD_OID	0x12
-#define NCI_VS_NFCC_INFO_RSP_GID	0x4f
-#define NCI_VS_NFCC_INFO_RSP_OID	0x12
-
-struct nfcwilink_hdr {
-	__u8 chnl;
-	__u8 opcode;
-	__le16 len;
-} __packed;
-
-struct nci_vs_nfcc_info_cmd {
-	__u8 gid;
-	__u8 oid;
-	__u8 plen;
-} __packed;
-
-struct nci_vs_nfcc_info_rsp {
-	__u8 gid;
-	__u8 oid;
-	__u8 plen;
-	__u8 status;
-	__u8 hw_id;
-	__u8 sw_ver_x;
-	__u8 sw_ver_z;
-	__u8 patch_id;
-} __packed;
-
-struct bts_file_hdr {
-	__le32 magic;
-	__le32 ver;
-	__u8 rfu[24];
-	__u8 actions[0];
-} __packed;
-
-struct bts_file_action {
-	__le16 type;
-	__le16 len;
-	__u8 data[0];
-} __packed;
-
-struct nfcwilink {
-	struct platform_device		*pdev;
-	struct nci_dev			*ndev;
-	unsigned long			flags;
-
-	int				st_register_cb_status;
-	long				(*st_write) (struct sk_buff *);
-
-	struct completion		completed;
-
-	struct nci_vs_nfcc_info_rsp	nfcc_info;
-};
-
-/* NFCWILINK driver flags */
-enum {
-	NFCWILINK_RUNNING,
-	NFCWILINK_FW_DOWNLOAD,
-};
-
-static int nfcwilink_send(struct nci_dev *ndev, struct sk_buff *skb);
-
-static inline struct sk_buff *nfcwilink_skb_alloc(unsigned int len, gfp_t how)
-{
-	struct sk_buff *skb;
-
-	skb = alloc_skb(len + NFCWILINK_HDR_LEN, how);
-	if (skb)
-		skb_reserve(skb, NFCWILINK_HDR_LEN);
-
-	return skb;
-}
-
-static void nfcwilink_fw_download_receive(struct nfcwilink *drv,
-						struct sk_buff *skb)
-{
-	struct nci_vs_nfcc_info_rsp *rsp = (void *)skb->data;
-
-	/* Detect NCI_VS_NFCC_INFO_RSP and store the result */
-	if ((skb->len > 3) && (rsp->gid == NCI_VS_NFCC_INFO_RSP_GID) &&
-		(rsp->oid == NCI_VS_NFCC_INFO_RSP_OID)) {
-		memcpy(&drv->nfcc_info, rsp,
-			sizeof(struct nci_vs_nfcc_info_rsp));
-	}
-
-	kfree_skb(skb);
-
-	complete(&drv->completed);
-}
-
-static int nfcwilink_get_bts_file_name(struct nfcwilink *drv, char *file_name)
-{
-	struct nci_vs_nfcc_info_cmd *cmd;
-	struct sk_buff *skb;
-	unsigned long comp_ret;
-	int rc;
-
-	skb = nfcwilink_skb_alloc(sizeof(struct nci_vs_nfcc_info_cmd),
-					GFP_KERNEL);
-	if (!skb) {
-		nfc_err(&drv->pdev->dev,
-			"no memory for nci_vs_nfcc_info_cmd\n");
-		return -ENOMEM;
-	}
-
-	cmd = (struct nci_vs_nfcc_info_cmd *)
-			skb_put(skb, sizeof(struct nci_vs_nfcc_info_cmd));
-	cmd->gid = NCI_VS_NFCC_INFO_CMD_GID;
-	cmd->oid = NCI_VS_NFCC_INFO_CMD_OID;
-	cmd->plen = 0;
-
-	drv->nfcc_info.plen = 0;
-
-	rc = nfcwilink_send(drv->ndev, skb);
-	if (rc)
-		return rc;
-
-	comp_ret = wait_for_completion_timeout(&drv->completed,
-				msecs_to_jiffies(NFCWILINK_CMD_TIMEOUT));
-	dev_dbg(&drv->pdev->dev, "wait_for_completion_timeout returned %ld\n",
-		comp_ret);
-	if (comp_ret == 0) {
-		nfc_err(&drv->pdev->dev,
-			"timeout on wait_for_completion_timeout\n");
-		return -ETIMEDOUT;
-	}
-
-	dev_dbg(&drv->pdev->dev, "nci_vs_nfcc_info_rsp: plen %d, status %d\n",
-		drv->nfcc_info.plen, drv->nfcc_info.status);
-
-	if ((drv->nfcc_info.plen != 5) || (drv->nfcc_info.status != 0)) {
-		nfc_err(&drv->pdev->dev, "invalid nci_vs_nfcc_info_rsp\n");
-		return -EINVAL;
-	}
-
-	snprintf(file_name, BTS_FILE_NAME_MAX_SIZE,
-			"TINfcInit_%d.%d.%d.%d.bts",
-			drv->nfcc_info.hw_id,
-			drv->nfcc_info.sw_ver_x,
-			drv->nfcc_info.sw_ver_z,
-			drv->nfcc_info.patch_id);
-
-	nfc_info(&drv->pdev->dev, "nfcwilink FW file name: %s\n", file_name);
-
-	return 0;
-}
-
-static int nfcwilink_send_bts_cmd(struct nfcwilink *drv, __u8 *data, int len)
-{
-	struct nfcwilink_hdr *hdr = (struct nfcwilink_hdr *)data;
-	struct sk_buff *skb;
-	unsigned long comp_ret;
-	int rc;
-
-	/* verify valid cmd for the NFC channel */
-	if ((len <= sizeof(struct nfcwilink_hdr)) ||
-		(len > BTS_FILE_CMD_MAX_LEN) ||
-		(hdr->chnl != NFCWILINK_CHNL) ||
-		(hdr->opcode != NFCWILINK_OPCODE)) {
-		nfc_err(&drv->pdev->dev,
-			"ignoring invalid bts cmd, len %d, chnl %d, opcode %d\n",
-			len, hdr->chnl, hdr->opcode);
-		return 0;
-	}
-
-	/* remove the ST header */
-	len -= sizeof(struct nfcwilink_hdr);
-	data += sizeof(struct nfcwilink_hdr);
-
-	skb = nfcwilink_skb_alloc(len, GFP_KERNEL);
-	if (!skb) {
-		nfc_err(&drv->pdev->dev, "no memory for bts cmd\n");
-		return -ENOMEM;
-	}
-
-	memcpy(skb_put(skb, len), data, len);
-
-	rc = nfcwilink_send(drv->ndev, skb);
-	if (rc)
-		return rc;
-
-	comp_ret = wait_for_completion_timeout(&drv->completed,
-				msecs_to_jiffies(NFCWILINK_CMD_TIMEOUT));
-	dev_dbg(&drv->pdev->dev, "wait_for_completion_timeout returned %ld\n",
-		comp_ret);
-	if (comp_ret == 0) {
-		nfc_err(&drv->pdev->dev,
-			"timeout on wait_for_completion_timeout\n");
-		return -ETIMEDOUT;
-	}
-
-	return 0;
-}
-
-static int nfcwilink_download_fw(struct nfcwilink *drv)
-{
-	unsigned char file_name[BTS_FILE_NAME_MAX_SIZE];
-	const struct firmware *fw;
-	__u16 action_type, action_len;
-	__u8 *ptr;
-	int len, rc;
-
-	set_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags);
-
-	rc = nfcwilink_get_bts_file_name(drv, file_name);
-	if (rc)
-		goto exit;
-
-	rc = request_firmware(&fw, file_name, &drv->pdev->dev);
-	if (rc) {
-		nfc_err(&drv->pdev->dev, "request_firmware failed %d\n", rc);
-
-		/* if the file is not found, don't exit with failure */
-		if (rc == -ENOENT)
-			rc = 0;
-
-		goto exit;
-	}
-
-	len = fw->size;
-	ptr = (__u8 *)fw->data;
-
-	if ((len == 0) || (ptr == NULL)) {
-		dev_dbg(&drv->pdev->dev,
-			"request_firmware returned size %d\n", len);
-		goto release_fw;
-	}
-
-	if (__le32_to_cpu(((struct bts_file_hdr *)ptr)->magic) !=
-			BTS_FILE_HDR_MAGIC) {
-		nfc_err(&drv->pdev->dev, "wrong bts magic number\n");
-		rc = -EINVAL;
-		goto release_fw;
-	}
-
-	/* remove the BTS header */
-	len -= sizeof(struct bts_file_hdr);
-	ptr += sizeof(struct bts_file_hdr);
-
-	while (len > 0) {
-		action_type =
-			__le16_to_cpu(((struct bts_file_action *)ptr)->type);
-		action_len =
-			__le16_to_cpu(((struct bts_file_action *)ptr)->len);
-
-		dev_dbg(&drv->pdev->dev, "bts_file_action type %d, len %d\n",
-			action_type, action_len);
-
-		switch (action_type) {
-		case BTS_FILE_ACTION_TYPE_SEND_CMD:
-			rc = nfcwilink_send_bts_cmd(drv,
-					((struct bts_file_action *)ptr)->data,
-					action_len);
-			if (rc)
-				goto release_fw;
-			break;
-		}
-
-		/* advance to the next action */
-		len -= (sizeof(struct bts_file_action) + action_len);
-		ptr += (sizeof(struct bts_file_action) + action_len);
-	}
-
-release_fw:
-	release_firmware(fw);
-
-exit:
-	clear_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags);
-	return rc;
-}
-
-/* Called by ST when registration is complete */
-static void nfcwilink_register_complete(void *priv_data, int data)
-{
-	struct nfcwilink *drv = priv_data;
-
-	/* store ST registration status */
-	drv->st_register_cb_status = data;
-
-	/* complete the wait in nfc_st_open() */
-	complete(&drv->completed);
-}
-
-/* Called by ST when receive data is available */
-static long nfcwilink_receive(void *priv_data, struct sk_buff *skb)
-{
-	struct nfcwilink *drv = priv_data;
-	int rc;
-
-	if (!skb)
-		return -EFAULT;
-
-	if (!drv) {
-		kfree_skb(skb);
-		return -EFAULT;
-	}
-
-	dev_dbg(&drv->pdev->dev, "receive entry, len %d\n", skb->len);
-
-	/* strip the ST header
-	(apart for the chnl byte, which is not received in the hdr) */
-	skb_pull(skb, (NFCWILINK_HDR_LEN-1));
-
-	if (test_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags)) {
-		nfcwilink_fw_download_receive(drv, skb);
-		return 0;
-	}
-
-	/* Forward skb to NCI core layer */
-	rc = nci_recv_frame(drv->ndev, skb);
-	if (rc < 0) {
-		nfc_err(&drv->pdev->dev, "nci_recv_frame failed %d\n", rc);
-		return rc;
-	}
-
-	return 0;
-}
-
-/* protocol structure registered with ST */
-static struct st_proto_s nfcwilink_proto = {
-	.chnl_id = NFCWILINK_CHNL,
-	.max_frame_size = NFCWILINK_MAX_FRAME_SIZE,
-	.hdr_len = (NFCWILINK_HDR_LEN-1),	/* not including chnl byte */
-	.offset_len_in_hdr = NFCWILINK_OFFSET_LEN_IN_HDR,
-	.len_size = NFCWILINK_LEN_SIZE,
-	.reserve = 0,
-	.recv = nfcwilink_receive,
-	.reg_complete_cb = nfcwilink_register_complete,
-	.write = NULL,
-};
-
-static int nfcwilink_open(struct nci_dev *ndev)
-{
-	struct nfcwilink *drv = nci_get_drvdata(ndev);
-	unsigned long comp_ret;
-	int rc;
-
-	if (test_and_set_bit(NFCWILINK_RUNNING, &drv->flags)) {
-		rc = -EBUSY;
-		goto exit;
-	}
-
-	nfcwilink_proto.priv_data = drv;
-
-	init_completion(&drv->completed);
-	drv->st_register_cb_status = -EINPROGRESS;
-
-	rc = st_register(&nfcwilink_proto);
-	if (rc < 0) {
-		if (rc == -EINPROGRESS) {
-			comp_ret = wait_for_completion_timeout(
-			&drv->completed,
-			msecs_to_jiffies(NFCWILINK_REGISTER_TIMEOUT));
-
-			dev_dbg(&drv->pdev->dev,
-				"wait_for_completion_timeout returned %ld\n",
-				comp_ret);
-
-			if (comp_ret == 0) {
-				/* timeout */
-				rc = -ETIMEDOUT;
-				goto clear_exit;
-			} else if (drv->st_register_cb_status != 0) {
-				rc = drv->st_register_cb_status;
-				nfc_err(&drv->pdev->dev,
-					"st_register_cb failed %d\n", rc);
-				goto clear_exit;
-			}
-		} else {
-			nfc_err(&drv->pdev->dev, "st_register failed %d\n", rc);
-			goto clear_exit;
-		}
-	}
-
-	/* st_register MUST fill the write callback */
-	BUG_ON(nfcwilink_proto.write == NULL);
-	drv->st_write = nfcwilink_proto.write;
-
-	if (nfcwilink_download_fw(drv)) {
-		nfc_err(&drv->pdev->dev, "nfcwilink_download_fw failed %d\n",
-			rc);
-		/* open should succeed, even if the FW download failed */
-	}
-
-	goto exit;
-
-clear_exit:
-	clear_bit(NFCWILINK_RUNNING, &drv->flags);
-
-exit:
-	return rc;
-}
-
-static int nfcwilink_close(struct nci_dev *ndev)
-{
-	struct nfcwilink *drv = nci_get_drvdata(ndev);
-	int rc;
-
-	if (!test_and_clear_bit(NFCWILINK_RUNNING, &drv->flags))
-		return 0;
-
-	rc = st_unregister(&nfcwilink_proto);
-	if (rc)
-		nfc_err(&drv->pdev->dev, "st_unregister failed %d\n", rc);
-
-	drv->st_write = NULL;
-
-	return rc;
-}
-
-static int nfcwilink_send(struct nci_dev *ndev, struct sk_buff *skb)
-{
-	struct nfcwilink *drv = nci_get_drvdata(ndev);
-	struct nfcwilink_hdr hdr = {NFCWILINK_CHNL, NFCWILINK_OPCODE, 0x0000};
-	long len;
-
-	dev_dbg(&drv->pdev->dev, "send entry, len %d\n", skb->len);
-
-	if (!test_bit(NFCWILINK_RUNNING, &drv->flags)) {
-		kfree_skb(skb);
-		return -EINVAL;
-	}
-
-	/* add the ST hdr to the start of the buffer */
-	hdr.len = cpu_to_le16(skb->len);
-	memcpy(skb_push(skb, NFCWILINK_HDR_LEN), &hdr, NFCWILINK_HDR_LEN);
-
-	/* Insert skb to shared transport layer's transmit queue.
-	 * Freeing skb memory is taken care in shared transport layer,
-	 * so don't free skb memory here.
-	 */
-	len = drv->st_write(skb);
-	if (len < 0) {
-		kfree_skb(skb);
-		nfc_err(&drv->pdev->dev, "st_write failed %ld\n", len);
-		return -EFAULT;
-	}
-
-	return 0;
-}
-
-static struct nci_ops nfcwilink_ops = {
-	.open = nfcwilink_open,
-	.close = nfcwilink_close,
-	.send = nfcwilink_send,
-};
-
-static int nfcwilink_probe(struct platform_device *pdev)
-{
-	struct nfcwilink *drv;
-	int rc;
-	__u32 protocols;
-
-	drv = devm_kzalloc(&pdev->dev, sizeof(struct nfcwilink), GFP_KERNEL);
-	if (!drv) {
-		rc = -ENOMEM;
-		goto exit;
-	}
-
-	drv->pdev = pdev;
-
-	protocols = NFC_PROTO_JEWEL_MASK
-		| NFC_PROTO_MIFARE_MASK | NFC_PROTO_FELICA_MASK
-		| NFC_PROTO_ISO14443_MASK
-		| NFC_PROTO_ISO14443_B_MASK
-		| NFC_PROTO_NFC_DEP_MASK;
-
-	drv->ndev = nci_allocate_device(&nfcwilink_ops,
-					protocols,
-					NFCWILINK_HDR_LEN,
-					0);
-	if (!drv->ndev) {
-		nfc_err(&pdev->dev, "nci_allocate_device failed\n");
-		rc = -ENOMEM;
-		goto exit;
-	}
-
-	nci_set_parent_dev(drv->ndev, &pdev->dev);
-	nci_set_drvdata(drv->ndev, drv);
-
-	rc = nci_register_device(drv->ndev);
-	if (rc < 0) {
-		nfc_err(&pdev->dev, "nci_register_device failed %d\n", rc);
-		goto free_dev_exit;
-	}
-
-	dev_set_drvdata(&pdev->dev, drv);
-
-	goto exit;
-
-free_dev_exit:
-	nci_free_device(drv->ndev);
-
-exit:
-	return rc;
-}
-
-static int nfcwilink_remove(struct platform_device *pdev)
-{
-	struct nfcwilink *drv = dev_get_drvdata(&pdev->dev);
-	struct nci_dev *ndev;
-
-	if (!drv)
-		return -EFAULT;
-
-	ndev = drv->ndev;
-
-	nci_unregister_device(ndev);
-	nci_free_device(ndev);
-
-	return 0;
-}
-
-static struct platform_driver nfcwilink_driver = {
-	.probe = nfcwilink_probe,
-	.remove = nfcwilink_remove,
-	.driver = {
-		.name = "nfcwilink",
-	},
-};
-
-module_platform_driver(nfcwilink_driver);
-
-/* ------ Module Info ------ */
-
-MODULE_AUTHOR("Ilan Elias <ilane@ti.com>");
-MODULE_DESCRIPTION("NFC Driver for TI Shared Transport");
-MODULE_LICENSE("GPL");