@@ -68,6 +68,7 @@ config NFC_PORT100
If unsure, say N.
+source "drivers/nfc/fdp/Kconfig"
source "drivers/nfc/pn544/Kconfig"
source "drivers/nfc/microread/Kconfig"
source "drivers/nfc/nfcmrvl/Kconfig"
new file mode 100644
@@ -0,0 +1,22 @@
+config NFC_FDP
+ tristate "Intel FDP NFC driver"
+ depends on NFC_NCI
+ select CRC_CCITT
+ default n
+ ---help---
+ Intel FDP core driver.
+ This is a driver based on the NCI NFC kernel layers.
+
+ To compile this driver as a module, choose m here. The module will
+ be called pn547.
+ Say N if unsure.
+
+config NFC_FDP_I2C
+ tristate "NFC FDP i2c support"
+ depends on NFC_FDP && I2C
+ ---help---
+ This module adds support for the Intel FDP i2c interface.
+ Select this if your platform is using the i2c bus.
+
+ If you choose to build a module, it'll be called fdp_i2c.
+ Say N if unsure.
new file mode 100644
@@ -0,0 +1,10 @@
+#
+# Makefile for FDP NCI based NFC driver
+#
+
+obj-$(CONFIG_NFC_FDP) += fdp.o
+obj-$(CONFIG_NFC_FDP_I2C) += fdp_i2c.o
+
+fdp-objs = core.o cmd.o ntf.o rsp.o
+fdp_i2c-objs = i2c.o
+
new file mode 100644
@@ -0,0 +1,196 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/i2c.h>
+#include <linux/firmware.h>
+#include <net/nfc/nci_core.h>
+
+#include "fdp.h"
+
+#define NCI_OP_PROP_PATCH_CMD nci_opcode_pack(NCI_GID_PROP, 0x08)
+#define NCI_OP_PROP_SET_PRODUCTION_DATA_CMD nci_opcode_pack(NCI_GID_PROP, 0x23)
+#define NCI_OP_CORE_GET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x03)
+static u8 nci_core_get_config_otp_ram_version[5] = {
+ 0x04,
+ NCI_PARAM_ID_FW_RAM_VERSION,
+ NCI_PARAM_ID_FW_OTP_VERSION,
+ NCI_PARAM_ID_OTP_LIMITED_VERSION,
+ NCI_PARAM_ID_KEY_INDEX_ID
+};
+
+#define NCI_GET_VERSION_TIMEOUT 8000
+#define NCI_PATCH_REQUEST_TIMEOUT 8000
+
+struct production_data {
+ u8 len;
+ char *data;
+};
+
+static void fdp_nci_get_version_req(struct nci_dev *ndev, unsigned long opt)
+{
+ fdp_nci_send_cmd(ndev, NCI_OP_CORE_GET_CONFIG_CMD,
+ sizeof(nci_core_get_config_otp_ram_version),
+ &nci_core_get_config_otp_ram_version);
+}
+
+static void fdp_nci_set_production_data_req(struct nci_dev *ndev,
+ unsigned long opt)
+{
+ struct production_data *pd = (struct production_data *)opt;
+
+ fdp_nci_send_cmd(ndev, NCI_OP_PROP_SET_PRODUCTION_DATA_CMD,
+ pd->len, pd->data);
+}
+
+static void fdp_nci_patch_req(struct nci_dev *ndev, unsigned long opt)
+{
+ u8 type = (u8) opt;
+
+ fdp_nci_send_cmd(ndev, NCI_OP_PROP_PATCH_CMD, sizeof(type), &type);
+}
+
+int fdp_nci_create_conn(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+ struct core_conn_create_dest_spec_params param;
+
+ param.type = 0xA0;
+ param.length = 0x00;
+
+ return nci_core_conn_create(info->ndev, 0xC2, 1, sizeof(param), ¶m,
+ &info->conn_id);
+}
+
+int fdp_nci_close_conn(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ return nci_core_conn_close(info->ndev, info->conn_id);
+}
+
+int fdp_nci_get_versions(struct nci_dev *ndev)
+{
+ return nci_request_driver(ndev, fdp_nci_get_version_req, 0,
+ msecs_to_jiffies(NCI_GET_VERSION_TIMEOUT));
+}
+
+int fdp_nci_patch_start(struct nci_dev *ndev, u8 type)
+{
+ return nci_request_driver(ndev, fdp_nci_patch_req, (unsigned long) type,
+ msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT));
+}
+
+int fdp_nci_patch_end(struct nci_dev *ndev)
+{
+ return nci_request_driver(ndev, fdp_nci_patch_req, NCI_PATCH_TYPE_EOT,
+ msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT));
+}
+
+int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, char *data)
+{
+ struct production_data pd;
+
+ pd.len = len;
+ pd.data = data;
+
+ return nci_request_driver(ndev, fdp_nci_set_production_data_req,
+ (unsigned long) &pd,
+ msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT));
+}
+
+int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, u32 clock_freq)
+{
+ u32 fc = 13560;
+ u32 nd, num, delta;
+ char data[9];
+
+ nd = (24 * fc) / clock_freq;
+ delta = 24 * fc - nd * clock_freq;
+ num = (32768 * delta) / clock_freq;
+
+ data[0] = 0x00;
+ data[1] = 0x00;
+ data[2] = 0x00;
+
+ data[3] = 0x10;
+ data[4] = 0x04;
+ data[5] = num & 0xFF;
+ data[6] = (num >> 8) & 0xff;
+ data[7] = nd;
+ data[8] = clock_type;
+
+ return fdp_nci_set_production_data(ndev, 9, data);
+}
+
+static void fdp_nci_send_patch_cb(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ info->setup_patch_sent = 1;
+ wake_up(&info->setup_wq);
+}
+
+int fdp_nci_send_patch(struct nci_dev *ndev, u8 type)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+ const struct firmware *fw;
+ struct sk_buff *skb;
+ unsigned long len;
+ u8 max_size, payload_size;
+ int rc = 0;
+
+ if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) ||
+ (type == NCI_PATCH_TYPE_RAM && !info->ram_patch))
+ return -EINVAL;
+
+ if (type == NCI_PATCH_TYPE_OTP)
+ fw = info->otp_patch;
+ else
+ fw = info->ram_patch;
+
+ max_size = nci_conn_max_data_pkt_payload_size(ndev, info->conn_id);
+ if (!max_size)
+ return -EINVAL;
+
+ len = fw->size;
+
+ fdp_nci_set_data_pkt_counter(ndev, fdp_nci_send_patch_cb,
+ DIV_ROUND_UP(fw->size, max_size));
+
+ while (len) {
+
+ payload_size = min_t(unsigned long, (unsigned long) max_size,
+ len);
+
+ skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size),
+ GFP_KERNEL);
+ skb_reserve(skb, NCI_CTRL_HDR_SIZE);
+
+ memcpy(skb_put(skb, payload_size), fw->data + (fw->size - len),
+ payload_size);
+
+ rc = nci_send_data(ndev, info->conn_id, skb);
+
+ if (rc) {
+ fdp_nci_set_data_pkt_counter(ndev, NULL, 0);
+ return rc;
+ }
+
+ len -= payload_size;
+ }
+
+ return rc;
+}
new file mode 100644
@@ -0,0 +1,503 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <net/nfc/nci_core.h>
+
+#include "fdp.h"
+
+#define FDP_OTP_PATCH_NAME "otp.bin"
+#define FDP_RAM_PATCH_NAME "ram.bin"
+#define FDP_FW_HEADER_SIZE 576
+
+int fdp_nci_open(struct nci_dev *ndev)
+{
+ int r;
+ struct fdp_nci_info *info;
+
+ info = nci_get_drvdata(ndev);
+ pr_debug("%s\n", __func__);
+
+ mutex_lock(&info->lock);
+
+ skb_queue_purge(&info->rx_q);
+ r = info->phy_ops->enable(info->phy);
+ if (r == 0)
+ info->state = FDP_ST_RESET;
+
+ mutex_unlock(&info->lock);
+ return r;
+}
+
+int fdp_nci_close(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_debug("%s\n", __func__);
+ skb_queue_purge(&info->rx_q);
+
+ return 0;
+}
+
+int fdp_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_debug("%s\n", __func__);
+
+ if (atomic_dec_and_test(&info->data_pkt_counter))
+ info->data_pkt_counter_cb(ndev);
+
+ return info->phy_ops->write(info->phy, skb);
+}
+
+void fdp_nci_intercept_inc(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("FDP NCI intercept INC\n");
+ atomic_inc(&info->intercept);
+}
+
+void fdp_nci_intercept_dec(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("FDP NCI intercept DEC\n");
+ atomic_dec(&info->intercept);
+}
+
+void fdp_nci_intercept_add(struct nci_dev *ndev, int count)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("FDP NCI intercept ADD %d\n", count);
+ atomic_add(count, &info->intercept);
+}
+
+void fdp_nci_intercept_disable(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("FDP NCI intercept disabled\n");
+ atomic_set(&info->intercept, 0);
+}
+
+void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev,
+ void (*cb)(struct nci_dev *ndev), int count)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("FDP NCI data pkt counter %d\n", count);
+ atomic_set(&info->data_pkt_counter, count);
+ info->data_pkt_counter_cb = cb;
+}
+
+int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_debug("%s\n", __func__);
+
+ if (atomic_read(&info->intercept)) {
+ skb_queue_tail(&info->rx_q, skb);
+ schedule_work(&info->rx_work);
+ return 0;
+ }
+
+ return nci_recv_frame(ndev, skb);
+}
+EXPORT_SYMBOL(fdp_nci_recv_frame);
+
+void fdp_nci_rx_work(struct work_struct *work)
+{
+ struct sk_buff *skb;
+ struct fdp_nci_info *info = container_of(work, struct fdp_nci_info,
+ rx_work);
+ struct nci_dev *ndev = info->ndev;
+ int r;
+
+ while ((skb = skb_dequeue(&info->rx_q))) {
+
+ switch (nci_mt(skb->data)) {
+ case NCI_MT_RSP_PKT:
+ r = fdp_nci_rsp_packet(ndev, skb);
+ break;
+ case NCI_MT_NTF_PKT:
+ r = fdp_nci_ntf_packet(ndev, skb);
+ break;
+ default:
+ r = -EINVAL;
+ }
+
+ /*
+ * Packet received. Disabling intercept
+ * It should be reenabled if still needed
+ */
+ if (!r)
+ fdp_nci_intercept_dec(ndev);
+
+ kfree_skb(skb);
+ }
+}
+
+int fdp_nci_send_cmd(struct nci_dev *ndev, u16 opcode, u8 plen,
+ void *payload)
+{
+ fdp_nci_intercept_inc(ndev);
+ return nci_send_cmd(ndev, opcode, plen, payload);
+}
+
+int fdp_nci_request_firmware(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+ struct device *dev = &info->phy->i2c_dev->dev;
+ u8 *data;
+ int r;
+
+ r = request_firmware(&info->otp_patch, FDP_OTP_PATCH_NAME, dev);
+ if (r < 0) {
+ pr_info("FDP OTP patch request error\n");
+ goto error;
+ }
+
+ r = request_firmware(&info->ram_patch, FDP_RAM_PATCH_NAME, dev);
+ if (r < 0) {
+ pr_info("FDP RAM patch request error\n");
+ goto release_otp_patch;
+ }
+
+ data = (u8 *) info->otp_patch->data;
+ info->otp_patch_version =
+ data[FDP_FW_HEADER_SIZE] |
+ (data[FDP_FW_HEADER_SIZE + 1] << 8) |
+ (data[FDP_FW_HEADER_SIZE+2] << 16) |
+ (data[FDP_FW_HEADER_SIZE+3] << 24);
+
+ data = (u8 *) info->ram_patch->data;
+ info->ram_patch_version =
+ data[FDP_FW_HEADER_SIZE] |
+ (data[FDP_FW_HEADER_SIZE + 1] << 8) |
+ (data[FDP_FW_HEADER_SIZE + 2] << 16) |
+ (data[FDP_FW_HEADER_SIZE + 3] << 24);
+
+ pr_info("FDP OTP patch version: %d, size: %d\n",
+ info->otp_patch_version, (int) info->otp_patch->size);
+ pr_info("FDP RAM patch version: %d, size: %d\n",
+ info->ram_patch_version, (int) info->ram_patch->size);
+
+ return 0;
+
+release_otp_patch:
+ release_firmware(info->otp_patch);
+error:
+ return r;
+}
+
+int fdp_nci_setup(struct nci_dev *ndev)
+{
+ /* Format: total length followed by an NCI packet */
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+ char fdp_post_fw_vsc_cfg[] = { 0x1A, 0x2F, 0x23, 0x17,
+ 0x00, 0x00, 0x00,
+ 0x00, 0x04, 0x04, 0x2B, 0x20, 0xFF,
+ 0x09, 0x07, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x02, 0xFF, 0xFF,
+ 0x08, 0x03, 0x00, 0xFF, 0xFF };
+ int r;
+ u8 patched = 0;
+
+ pr_debug("%s\n", __func__);
+
+ r = nci_init(ndev);
+ if (r)
+ goto error;
+
+ /* Get RAM and OTP version */
+ r = fdp_nci_get_versions(ndev);
+ if (r)
+ goto error;
+
+ /* Load firmware from disk */
+ r = fdp_nci_request_firmware(ndev);
+ if (r)
+ goto error;
+
+ /* Update OTP */
+ if (info->otp_version < info->otp_patch_version) {
+
+ info->setup_patch_sent = 0;
+ info->setup_reset_ntf = 0;
+ info->setup_patch_ntf = 0;
+
+ /* Patch init request */
+ r = fdp_nci_patch_start(ndev, NCI_PATCH_TYPE_OTP);
+ if (r)
+ goto error;
+
+ /* Patch data connection creation */
+ r = fdp_nci_create_conn(ndev);
+ if (r)
+ goto error;
+
+ /* Send the patch over the data connection */
+ r = fdp_nci_send_patch(ndev, NCI_PATCH_TYPE_OTP);
+ if (r)
+ goto error;
+
+ /* Wait for all the packets to be send over i2c */
+ wait_event_interruptible(info->setup_wq,
+ info->setup_patch_sent == 1);
+
+ /* Close the data connection */
+ r = fdp_nci_close_conn(ndev);
+ if (r)
+ goto error;
+
+ /*
+ * After we send the patch finish message we expect two
+ * notifications: NCI_OP_PROP_PATCH_NTF,
+ * NCI_OP_CORE_RESET_NTF
+ */
+ fdp_nci_intercept_add(ndev, 2);
+
+ /* Patch finish message */
+ r = fdp_nci_patch_end(ndev);
+ if (r) {
+ pr_err("FDP OTP patch error %d\n", r);
+ r = -EINVAL;
+ goto error;
+ }
+
+ /* If the patch notification didn't arrive yet, wait for it */
+ wait_event_interruptible(info->setup_wq, info->setup_patch_ntf);
+
+ /* Check if the patching was successful */
+ r = info->setup_patch_status;
+ if (r) {
+ pr_err("FDP OTP patch error %d\n", r);
+ r = -EINVAL;
+ goto error;
+ }
+
+ /*
+ * We need to wait for the reset notification before we
+ * can continue
+ */
+ wait_event_interruptible(info->setup_wq, info->setup_reset_ntf);
+
+ patched = 1;
+ }
+
+ /* Update RAM */
+ if (info->ram_version < info->ram_patch_version) {
+
+ info->setup_patch_sent = 0;
+ info->setup_reset_ntf = 0;
+ info->setup_patch_ntf = 0;
+
+ /* Patch init request */
+ r = fdp_nci_patch_start(ndev, NCI_PATCH_TYPE_RAM);
+ if (r)
+ goto error;
+
+ /* Patch data connection creation */
+ r = fdp_nci_create_conn(ndev);
+ if (r)
+ goto error;
+
+ /* Send the patch over the data connection */
+ r = fdp_nci_send_patch(ndev, NCI_PATCH_TYPE_RAM);
+ if (r)
+ goto error;
+
+ /* Wait for all the packets to be send over i2c */
+ wait_event_interruptible(info->setup_wq,
+ info->setup_patch_sent == 1);
+
+ /* Close the data connection */
+ r = fdp_nci_close_conn(ndev);
+ if (r)
+ goto error;
+
+ /*
+ * After we send the patch finish message we expect two
+ * notifications: NCI_OP_PROP_PATCH_NTF,
+ * NCI_OP_CORE_RESET_NTF
+ */
+ fdp_nci_intercept_add(ndev, 2);
+
+ /* Patch finish message */
+ if (fdp_nci_patch_end(ndev)) {
+ r = -EINVAL;
+ goto error;
+ }
+
+ /* If the patch notification didn't arrive yet, wait for it*/
+ wait_event_interruptible(info->setup_wq, info->setup_patch_ntf);
+
+ /* Check if the patching was successful */
+ r = info->setup_patch_status;
+ if (r) {
+ pr_err("FDP RAM patch error %d\n", r);
+ r = -EINVAL;
+ goto error;
+ }
+
+ /*
+ * We need to wait for the reset notification before we
+ * can continue
+ */
+ wait_event_interruptible(info->setup_wq, info->setup_reset_ntf);
+
+ patched = 1;
+ }
+
+ /* If a patch was applied the new version is checked */
+ if (patched) {
+ r = nci_init(ndev);
+ if (r)
+ goto error;
+
+ r = fdp_nci_get_versions(ndev);
+ if (r)
+ goto error;
+
+ if (info->otp_version != info->otp_patch_version ||
+ info->ram_version != info->ram_patch_version) {
+ pr_err("FRP firmware update failed");
+ r = -EINVAL;
+ }
+ }
+
+ /* Check if the device has VSC */
+ if (fdp_post_fw_vsc_cfg[0]) {
+ /* Set the vendor specific configuration */
+ r = fdp_nci_set_production_data(ndev, fdp_post_fw_vsc_cfg[3],
+ &fdp_post_fw_vsc_cfg[4]);
+ if (r)
+ goto error;
+ }
+
+ /* Set clock type and frequency */
+ r = fdp_nci_set_clock(ndev, 0, 26000);
+ if (r)
+ goto error;
+
+ /*
+ * We initialized the devices but thA NFC subsystem
+ * expects it to not be initialized. Also in order to
+ * apply the VSC FDP needs a reset
+ */
+ r = nci_reset(ndev);
+ if (r)
+ goto error;
+
+ pr_info("FDP Setup done\n");
+
+ return 0;
+
+error:
+ fdp_nci_intercept_disable(ndev);
+ pr_info("FDP Setup error %d\n", r);
+ return r;
+}
+
+struct nci_ops nci_ops = {
+ .open = fdp_nci_open,
+ .close = fdp_nci_close,
+ .send = fdp_nci_send,
+ .setup = fdp_nci_setup,
+};
+
+int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops,
+ struct nci_dev **ndevp, int tx_headroom,
+ int tx_tailroom)
+{
+ struct fdp_nci_info *info;
+ struct nci_dev *ndev;
+ u32 protocols;
+ int r;
+
+ nfc_info(&phy->i2c_dev->dev, "%s\n", __func__);
+
+ info = kzalloc(sizeof(struct fdp_nci_info), GFP_KERNEL);
+ if (!info) {
+ r = -ENOMEM;
+ goto err_info_alloc;
+ }
+
+ info->phy = phy;
+ info->phy_ops = phy_ops;
+ info->state = FDP_ST_COLD;
+ mutex_init(&info->lock);
+
+ skb_queue_head_init(&info->rx_q);
+ INIT_WORK(&info->rx_work, fdp_nci_rx_work);
+
+ init_waitqueue_head(&info->setup_wq);
+
+ 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 |
+ NFC_PROTO_ISO15693_MASK;
+
+ ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom,
+ tx_tailroom);
+ if (!ndev) {
+ pr_err("Cannot allocate nfc ndev\n");
+ r = -ENOMEM;
+ goto err_alloc_ndev;
+ }
+
+ r = nci_register_device(ndev);
+ if (r)
+ goto err_regdev;
+
+ *ndevp = ndev;
+ info->ndev = ndev;
+
+ nci_set_drvdata(ndev, info);
+
+ return 0;
+
+err_regdev:
+ nci_free_device(ndev);
+err_alloc_ndev:
+ kfree(info);
+err_info_alloc:
+ return r;
+}
+EXPORT_SYMBOL(fdp_nci_probe);
+
+void fdp_nci_remove(struct nci_dev *ndev)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ pr_info("%s\n", __func__);
+
+ nci_unregister_device(ndev);
+ nci_free_device(ndev);
+ kfree(info);
+}
+EXPORT_SYMBOL(fdp_nci_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);
new file mode 100644
@@ -0,0 +1,115 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#ifndef __LOCAL_FDP_H_
+#define __LOCAL_FDP_H_
+
+#include <net/nfc/nci_core.h>
+#include <linux/firmware.h>
+#include <linux/workqueue.h>
+
+#define DRIVER_DESC "NCI NFC driver for Intel FDP"
+
+#define NCI_PATCH_TYPE_RAM 0x00
+#define NCI_PATCH_TYPE_OTP 0x01
+#define NCI_PATCH_TYPE_EOT 0xFF
+
+#define NCI_PARAM_ID_FW_RAM_VERSION 0xA0
+#define NCI_PARAM_ID_FW_OTP_VERSION 0xA1
+#define NCI_PARAM_ID_OTP_LIMITED_VERSION 0xC5
+#define NCI_PARAM_ID_KEY_INDEX_ID 0xC6
+
+#define NCI_GID_PROP 0x0F
+
+struct fdp_i2c_phy {
+ struct i2c_client *i2c_dev;
+ struct nci_dev *ndev;
+
+ unsigned int gpio_en;
+ unsigned int gpio_irq;
+ unsigned int en_polarity;
+
+ int powered;
+
+ uint16_t next_read_size;
+
+ /*
+ * < 0 if hardware error occurred (e.g. i2c err)
+ * and prevents normal operation
+ */
+ int hard_fault;
+};
+
+enum fdp_state {
+ FDP_ST_COLD,
+ FDP_ST_RESET,
+ FDP_ST_READY,
+ FDP_ST_ERROR,
+};
+
+struct fdp_nci_info {
+ struct nfc_phy_ops *phy_ops;
+ struct fdp_i2c_phy *phy;
+ struct nci_dev *ndev;
+
+ enum fdp_state state;
+ struct mutex lock;
+
+ const struct firmware *otp_patch;
+ const struct firmware *ram_patch;
+ u32 otp_patch_version;
+ u32 ram_patch_version;
+
+ u32 otp_version;
+ u32 ram_version;
+ u32 limited_otp_version;
+ u8 key_index;
+
+ u8 conn_id;
+ atomic_t intercept;
+ atomic_t data_pkt_counter;
+ void (*data_pkt_counter_cb)(struct nci_dev *ndev);
+ u8 setup_patch_sent;
+ u8 setup_patch_ntf;
+ u8 setup_patch_status;
+ u8 setup_reset_ntf;
+ wait_queue_head_t setup_wq;
+
+ struct sk_buff_head rx_q;
+ struct work_struct rx_work;
+};
+
+int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops,
+ struct nci_dev **ndev, int tx_headroom, int tx_tailroom);
+void fdp_nci_remove(struct nci_dev *ndev);
+
+int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
+int fdp_nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen,
+ void *payload);
+
+int fdp_nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb);
+int fdp_nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb);
+
+int fdp_nci_create_conn(struct nci_dev *ndev);
+int fdp_nci_close_conn(struct nci_dev *ndev);
+int fdp_nci_get_versions(struct nci_dev *ndev);
+int fdp_nci_patch_start(struct nci_dev *ndev, u8 type);
+int fdp_nci_patch_end(struct nci_dev *ndev);
+int fdp_nci_send_patch(struct nci_dev *ndev, u8 type);
+int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, char *data);
+int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, u32 clock_freq);
+void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev,
+ void (*cb)(struct nci_dev *ndev), int count);
+
+#endif /* __LOCAL_FDP_H_ */
new file mode 100644
@@ -0,0 +1,454 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/nfc.h>
+#include <linux/gpio.h>
+#include <linux/platform_data/fdp.h>
+#include <linux/delay.h>
+#include <net/nfc/nfc.h>
+#include <net/nfc/nci_core.h>
+
+#include "fdp.h"
+
+#define FDP_GPIO_NAME_IRQ "fdp_irq"
+#define FDP_GPIO_NAME_EN "fdp_en"
+
+#define FDP_FRAME_HEADROOM 2
+#define FDP_FRAME_TAILROOM 1
+
+#define FDP_NCI_I2C_MIN_PAYLOAD 5
+#define FDP_NCI_I2C_MAX_PAYLOAD 25
+
+#define RST_RESET 0
+#define RST_NO_RESET 1
+
+#define FDP_NCI_I2C_DRIVER_NAME "fdp_nci_i2c"
+
+#define I2C_DUMP_SKB(info, skb) \
+do { \
+ pr_debug("%s:\n", info); \
+ print_hex_dump(KERN_DEBUG, "i2c: ", DUMP_PREFIX_OFFSET, \
+ 16, 1, (skb)->data, (skb)->len, 0); \
+} while (0)
+
+static void fdp_nci_i2c_reset(struct fdp_i2c_phy *phy)
+{
+ /* Reset RST/WakeUP for at least 2 micro-second */
+ gpio_set_value_cansleep(phy->gpio_en, RST_RESET);
+ usleep_range(1000, 4000);
+ gpio_set_value_cansleep(phy->gpio_en, RST_NO_RESET);
+ usleep_range(10000, 14000);
+}
+
+static int fdp_nci_i2c_enable(void *phy_id)
+{
+ struct fdp_i2c_phy *phy = phy_id;
+
+ dev_dbg(&phy->i2c_dev->dev, "%s\n", __func__);
+
+ fdp_nci_i2c_reset(phy);
+ phy->powered = 1;
+
+ return 0;
+}
+
+static void fdp_nci_i2c_disable(void *phy_id)
+{
+ struct fdp_i2c_phy *phy = phy_id;
+
+ dev_dbg(&phy->i2c_dev->dev, "%s\n", __func__);
+
+ fdp_nci_i2c_reset(phy);
+ phy->powered = 0;
+}
+
+static void fdp_nci_i2c_add_len_lrc(struct sk_buff *skb)
+{
+ u8 lrc = 0;
+ u16 len, i;
+
+ /* Add length header */
+ len = skb->len;
+ *skb_push(skb, 1) = len & 0xff;
+ *skb_push(skb, 1) = len >> 8;
+
+ /* Compute and add lrc */
+ for (i = 0; i < len + 2; i++)
+ lrc ^= skb->data[i];
+
+ *skb_put(skb, 1) = lrc;
+}
+
+static void fdp_nci_i2c_remove_len_lrc(struct sk_buff *skb)
+{
+ skb_pull(skb, FDP_FRAME_HEADROOM);
+ skb_trim(skb, skb->len - FDP_FRAME_TAILROOM);
+}
+
+static int fdp_nci_i2c_write(void *phy_id, struct sk_buff *skb)
+{
+ struct fdp_i2c_phy *phy = phy_id;
+ struct i2c_client *client = phy->i2c_dev;
+ int r;
+
+ if (phy->hard_fault != 0)
+ return phy->hard_fault;
+
+ fdp_nci_i2c_add_len_lrc(skb);
+
+ I2C_DUMP_SKB("fdp_nci_i2c_write", skb);
+
+ r = i2c_master_send(client, skb->data, skb->len);
+ if (r == -EREMOTEIO) { /* Retry, chip was in standby */
+ usleep_range(1000, 4000);
+ r = i2c_master_send(client, skb->data, skb->len);
+ }
+
+ if (r < 0 || r != skb->len)
+ dev_dbg(&client->dev, "%s: error err=%d len=%d\n",
+ __func__, r, skb->len);
+
+ if (r >= 0) {
+ if (r != skb->len) {
+ phy->hard_fault = r;
+ r = -EREMOTEIO;
+ } else {
+ r = 0;
+ }
+ }
+
+ fdp_nci_i2c_remove_len_lrc(skb);
+
+ return r;
+}
+
+static struct nfc_phy_ops i2c_phy_ops = {
+ .write = fdp_nci_i2c_write,
+ .enable = fdp_nci_i2c_enable,
+ .disable = fdp_nci_i2c_disable,
+};
+
+static int fdp_nci_i2c_acpi_request_resources(struct i2c_client *client)
+{
+ struct fdp_i2c_phy *phy = i2c_get_clientdata(client);
+ const struct acpi_device_id *id;
+ struct gpio_desc *gpiod_en, *gpiod_irq;
+ struct device *dev;
+ int ret;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (!client)
+ return -EINVAL;
+
+ dev = &client->dev;
+
+ /* Match the struct device against a given list of ACPI IDs */
+ id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!id)
+ return -ENODEV;
+
+ /* Get EN GPIO from ACPI */
+ gpiod_en = devm_gpiod_get_index(dev, FDP_GPIO_NAME_EN, 1);
+ if (IS_ERR(gpiod_en)) {
+ nfc_err(dev, "Unable to get EN GPIO\n");
+ return -ENODEV;
+ }
+
+ phy->gpio_en = desc_to_gpio(gpiod_en);
+
+ /* Configuration EN GPIO */
+ ret = gpiod_direction_output(gpiod_en, 0);
+ if (ret) {
+ nfc_err(dev, "Fail EN pin direction\n");
+ return ret;
+ }
+
+ /* Get IRQ GPIO */
+ gpiod_irq = devm_gpiod_get_index(dev, FDP_GPIO_NAME_IRQ, 0);
+ if (IS_ERR(gpiod_irq)) {
+ nfc_err(dev,
+ "Unable to get IRQ GPIO\n");
+ return -ENODEV;
+ }
+
+ phy->gpio_irq = desc_to_gpio(gpiod_irq);
+
+ /* Configure IRQ GPIO */
+ ret = gpiod_direction_input(gpiod_irq);
+ if (ret) {
+ nfc_err(dev, "Fail IRQ pin direction\n");
+ return ret;
+ }
+
+ /* Map the pin to an IRQ */
+ ret = gpiod_to_irq(gpiod_irq);
+ if (ret < 0) {
+ nfc_err(dev, "Fail pin IRQ mapping\n");
+ return ret;
+ }
+
+ nfc_info(dev, "GPIO resource, no:%d irq:%d\n",
+ desc_to_gpio(gpiod_irq), ret);
+ client->irq = ret;
+
+ return 0;
+}
+
+static int fdp_nci_i2c_read(struct fdp_i2c_phy *phy, struct sk_buff **skb)
+{
+ int r, len;
+ u8 tmp[FDP_NCI_I2C_MAX_PAYLOAD], lrc, k;
+ u16 i;
+ struct i2c_client *client = phy->i2c_dev;
+
+ *skb = NULL;
+
+ /* Read the length packet and the data packet */
+ for (k = 0; k < 2; k++) {
+
+ len = phy->next_read_size;
+
+ r = i2c_master_recv(client, tmp, len);
+ if (r != len) {
+ dev_dbg(&client->dev, "%s: i2c recv err: %d\n",
+ __func__, r);
+ goto flush;
+ }
+
+ /* Check packet integruty */
+ for (lrc = i = 0; i < r; i++)
+ lrc ^= tmp[i];
+
+ /*
+ * LRC check failed. This may due to transmission error or
+ * desynchronization between driver and FDP. Drop the paquet
+ * and force resynchronization
+ */
+ if (lrc) {
+ dev_dbg(&client->dev, "%s: corrupted packet\n",
+ __func__);
+ phy->next_read_size = 5;
+ goto flush;
+ }
+
+ /* Packet that contains a length */
+ if (tmp[0] == 0 && tmp[1] == 0) {
+
+ phy->next_read_size = (tmp[2] << 8) + tmp[3] + 3;
+
+ } else {
+
+ phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD;
+
+ *skb = alloc_skb(len, GFP_KERNEL);
+ if (*skb == NULL) {
+ r = -ENOMEM;
+ goto flush;
+ }
+
+ memcpy(skb_put(*skb, len), tmp, len);
+ I2C_DUMP_SKB("fdp_nci_i2c_read", *skb);
+
+ fdp_nci_i2c_remove_len_lrc(*skb);
+ }
+ }
+
+ return 0;
+
+flush:
+ /* Flush the remaining data */
+ if (i2c_master_recv(client, tmp, sizeof(tmp)) < 0)
+ r = -EREMOTEIO;
+
+ return r;
+}
+
+static irqreturn_t fdp_nci_i2c_irq_thread_fn(int irq, void *phy_id)
+{
+ struct fdp_i2c_phy *phy = phy_id;
+ struct i2c_client *client;
+ struct sk_buff *skb;
+ int r;
+
+ client = phy->i2c_dev;
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (!phy || irq != phy->i2c_dev->irq) {
+ WARN_ON_ONCE(1);
+ return IRQ_NONE;
+ }
+
+ r = fdp_nci_i2c_read(phy, &skb);
+
+ if (r == -EREMOTEIO)
+ return IRQ_HANDLED;
+ else if (r == -ENOMEM || r == -EBADMSG)
+ return IRQ_HANDLED;
+
+ if (skb != NULL)
+ fdp_nci_recv_frame(phy->ndev, skb);
+
+ return IRQ_HANDLED;
+}
+
+
+static int fdp_nci_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct fdp_i2c_phy *phy;
+ struct fdp_nfc_platform_data *pdata;
+ int r = 0;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+ dev_dbg(&client->dev, "IRQ: %d\n", client->irq);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ nfc_err(&client->dev, "No I2C_FUNC_I2C\n");
+ return -ENODEV;
+ }
+
+ phy = devm_kzalloc(&client->dev, sizeof(struct fdp_i2c_phy),
+ GFP_KERNEL);
+ if (!phy)
+ return -ENOMEM;
+
+ phy->i2c_dev = client;
+ phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD;
+ i2c_set_clientdata(client, phy);
+
+ pdata = client->dev.platform_data;
+
+ /* Using platform data. */
+ if (pdata) {
+
+ if (pdata->request_resources == NULL) {
+ nfc_err(&client->dev, "request_resources() missing\n");
+ return -EINVAL;
+ }
+
+ r = pdata->request_resources(client);
+ if (r) {
+ nfc_err(&client->dev,
+ "Cannot get platform resources\n");
+ return r;
+ }
+
+ phy->gpio_en = pdata->get_gpio(NFC_GPIO_ENABLE);
+ phy->gpio_irq = pdata->get_gpio(NFC_GPIO_IRQ);
+
+ /* Using ACPI */
+ } else if (ACPI_HANDLE(&client->dev)) {
+
+ r = fdp_nci_i2c_acpi_request_resources(client);
+ if (r) {
+ nfc_err(&client->dev,
+ "Cannot get ACPI data\n");
+ return r;
+ }
+
+ } else {
+ nfc_err(&client->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ r = request_threaded_irq(client->irq, NULL, fdp_nci_i2c_irq_thread_fn,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ FDP_NCI_I2C_DRIVER_NAME, phy);
+
+ if (r < 0) {
+ nfc_err(&client->dev, "Unable to register IRQ handler\n");
+ goto err_rti;
+ }
+
+ r = fdp_nci_probe(phy, &i2c_phy_ops, &phy->ndev,
+ FDP_FRAME_HEADROOM, FDP_FRAME_TAILROOM);
+
+ if (r < 0) {
+ nfc_err(&client->dev, "NCI probing error\n");
+ goto err_nci;
+ }
+
+ nfc_info(&client->dev, "FDP I2C driver loaded\n");
+ return 0;
+
+err_nci:
+ free_irq(client->irq, phy);
+
+err_rti:
+ if (!pdata)
+ gpio_free(phy->gpio_en);
+ else if (pdata->free_resources)
+ pdata->free_resources();
+
+ return r;
+}
+
+static int fdp_nci_i2c_remove(struct i2c_client *client)
+{
+ struct fdp_i2c_phy *phy = i2c_get_clientdata(client);
+ struct fdp_nfc_platform_data *pdata = client->dev.platform_data;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ fdp_nci_remove(phy->ndev);
+
+ if (phy->powered)
+ fdp_nci_i2c_disable(phy);
+
+ free_irq(client->irq, phy);
+
+ /* No platform data, GPIOs have been requested by this driver */
+ if (!pdata) {
+ gpio_free(phy->gpio_en);
+ /* Using platform data */
+ } else if (pdata->free_resources) {
+ pdata->free_resources();
+ }
+
+ return 0;
+}
+
+static struct i2c_device_id fdp_nci_i2c_id_table[] = {
+ {"INT339A", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, fdp_nci_i2c_id_table);
+
+
+static const struct acpi_device_id fdp_nci_i2c_acpi_match[] = {
+ {"INT339A", 0},
+ {}
+};
+
+static struct i2c_driver fdp_nci_i2c_driver = {
+ .driver = {
+ .name = FDP_NCI_I2C_DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .acpi_match_table = ACPI_PTR(fdp_nci_i2c_acpi_match),
+ },
+ .id_table = fdp_nci_i2c_id_table,
+ .probe = fdp_nci_i2c_probe,
+ .remove = fdp_nci_i2c_remove,
+};
+
+module_i2c_driver(fdp_nci_i2c_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);
new file mode 100644
@@ -0,0 +1,68 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/i2c.h>
+#include <linux/firmware.h>
+#include <net/nfc/nci_core.h>
+
+#include "fdp.h"
+
+#define NCI_OP_PROP_PATCH_NTF nci_opcode_pack(NCI_GID_PROP, 0x08)
+#define NCI_OP_CORE_RESET_NTF nci_opcode_pack(NCI_GID_CORE, 0x00)
+
+void fdp_nci_core_reset_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ info->setup_reset_ntf = 1;
+ wake_up(&info->setup_wq);
+}
+
+void fdp_nci_prop_patch_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+
+ info->setup_patch_ntf = 1;
+ info->setup_patch_status = skb->data[0];
+ wake_up(&info->setup_wq);
+}
+
+int fdp_nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ u16 ntf_opcode;
+ int r = 0;
+
+ ntf_opcode = nci_opcode(skb->data);
+
+ /* strip the nci control header */
+ skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+ switch (ntf_opcode) {
+ case NCI_OP_CORE_RESET_NTF:
+ fdp_nci_core_reset_ntf_packet(ndev, skb);
+ break;
+ case NCI_OP_PROP_PATCH_NTF:
+ fdp_nci_prop_patch_ntf_packet(ndev, skb);
+ break;
+ default:
+ r = -EINVAL;
+ }
+
+ /* restore the nci control header */
+ skb_push(skb, NCI_CTRL_HDR_SIZE);
+
+ return r;
+}
new file mode 100644
@@ -0,0 +1,117 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/i2c.h>
+#include <linux/firmware.h>
+#include <net/nfc/nci_core.h>
+
+#include "fdp.h"
+
+#define NCI_OP_PROP_PATCH_RSP nci_opcode_pack(NCI_GID_PROP, 0x08)
+#define NCI_OP_PROP_SET_PRODUCTION_DATA_RSP nci_opcode_pack(NCI_GID_PROP, 0x23)
+#define NCI_OP_CORE_GET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x03)
+
+struct nci_core_get_config_rsp {
+ u8 status;
+ u8 count;
+ u8 data[0];
+};
+
+void fdp_nci_prop_patch_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+ nci_req_complete_driver(ndev, status);
+}
+
+void fdp_nci_prop_set_production_data_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+ nci_req_complete_driver(ndev, status);
+}
+
+void fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct fdp_nci_info *info = nci_get_drvdata(ndev);
+ struct nci_core_get_config_rsp *rsp = (void *) skb->data;
+ u8 i, *p;
+
+ if (rsp->status == NCI_STATUS_OK) {
+
+ p = rsp->data;
+ for (i = 0; i < 4; i++) {
+
+ switch (*p++) {
+ case NCI_PARAM_ID_FW_RAM_VERSION:
+ p++;
+ info->ram_version = le32_to_cpup((u32 *) p);
+ p += 4;
+ break;
+ case NCI_PARAM_ID_FW_OTP_VERSION:
+ p++;
+ info->otp_version = le32_to_cpup((u32 *) p);
+ p += 4;
+ break;
+ case NCI_PARAM_ID_OTP_LIMITED_VERSION:
+ p++;
+ info->otp_version = le32_to_cpup((u32 *) p);
+ p += 4;
+ break;
+ case NCI_PARAM_ID_KEY_INDEX_ID:
+ p++;
+ info->key_index = *p++;
+ }
+ }
+ }
+
+ pr_debug("FDP OTP version %d\n", info->otp_version);
+ pr_debug("FDP RAM version %d\n", info->ram_version);
+ pr_debug("FDP key index %d\n", info->key_index);
+
+ pr_debug("status 0x%x\n", rsp->status);
+ nci_req_complete_driver(ndev, rsp->status);
+}
+
+int fdp_nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ u16 ntf_opcode;
+ int r = 0;
+
+ ntf_opcode = nci_opcode(skb->data);
+ skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+ switch (ntf_opcode) {
+ case NCI_OP_CORE_GET_CONFIG_RSP:
+ fdp_nci_core_get_config_rsp_packet(ndev, skb);
+ break;
+ case NCI_OP_PROP_PATCH_RSP:
+ fdp_nci_prop_patch_rsp_packet(ndev, skb);
+ break;
+ case NCI_OP_PROP_SET_PRODUCTION_DATA_RSP:
+ fdp_nci_prop_set_production_data_rsp_packet(ndev, skb);
+ break;
+ default:
+ r = -EINVAL;
+ }
+
+ skb_push(skb, NCI_CTRL_HDR_SIZE);
+ return r;
+}
new file mode 100644
@@ -0,0 +1,33 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2016, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ * ------------------------------------------------------------------------- */
+
+
+#ifndef _FDP_H_
+#define _FDP_H_
+
+#include <linux/i2c.h>
+
+enum {
+ NFC_GPIO_ENABLE,
+ NFC_GPIO_IRQ,
+};
+
+/* board config */
+struct fdp_nfc_platform_data {
+ int (*request_resources)(struct i2c_client *client);
+ void (*free_resources)(void);
+ int (*get_gpio)(int type);
+};
+
+#endif /* _FDP_H_ */
The device can be enumerated using ACPI using the id INT339A. The 1st GPIO is the IRQ and the 2nd is the RESET pin. I can be also enumerated using platform init. Signed-off-by: Robert Dolca <robert.dolca@intel.com> --- drivers/nfc/Kconfig | 1 + drivers/nfc/fdp/Kconfig | 22 ++ drivers/nfc/fdp/Makefile | 10 + drivers/nfc/fdp/cmd.c | 196 +++++++++++++++ drivers/nfc/fdp/core.c | 503 ++++++++++++++++++++++++++++++++++++++ drivers/nfc/fdp/fdp.h | 115 +++++++++ drivers/nfc/fdp/i2c.c | 454 ++++++++++++++++++++++++++++++++++ drivers/nfc/fdp/ntf.c | 68 ++++++ drivers/nfc/fdp/rsp.c | 117 +++++++++ include/linux/platform_data/fdp.h | 33 +++ 10 files changed, 1519 insertions(+) create mode 100644 drivers/nfc/fdp/Kconfig create mode 100644 drivers/nfc/fdp/Makefile create mode 100644 drivers/nfc/fdp/cmd.c create mode 100644 drivers/nfc/fdp/core.c create mode 100644 drivers/nfc/fdp/fdp.h create mode 100644 drivers/nfc/fdp/i2c.c create mode 100644 drivers/nfc/fdp/ntf.c create mode 100644 drivers/nfc/fdp/rsp.c create mode 100644 include/linux/platform_data/fdp.h