diff options
| -rw-r--r-- | drivers/nfc/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/nfc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/nfc/nfcwilink.c | 578 |
3 files changed, 0 insertions, 590 deletions
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"); |