NFC: nxp-nci: Add support for NXP NCI chips
authorClément Perrochaud <clement.perrochaud@nxp.com>
Mon, 9 Mar 2015 10:12:04 +0000 (11:12 +0100)
committerSamuel Ortiz <sameo@linux.intel.com>
Thu, 26 Mar 2015 10:07:50 +0000 (11:07 +0100)
Add support for NXP NCI NFC controllers such as the NPC100 or PN7150
families.

Signed-off-by: Clément Perrochaud <clement.perrochaud@effinnov.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
MAINTAINERS
drivers/nfc/Kconfig
drivers/nfc/Makefile
drivers/nfc/nxp-nci/Kconfig [new file with mode: 0644]
drivers/nfc/nxp-nci/Makefile [new file with mode: 0644]
drivers/nfc/nxp-nci/core.c [new file with mode: 0644]
drivers/nfc/nxp-nci/firmware.c [new file with mode: 0644]
drivers/nfc/nxp-nci/nxp-nci.h [new file with mode: 0644]
include/linux/platform_data/nxp-nci.h [new file with mode: 0644]

index c2016557b2949f38ab66c4b46e7ee830308d4014..12fdf22a77b0fe1967488d591d719d888ffc94a0 100644 (file)
@@ -6937,6 +6937,13 @@ S:       Supported
 F:     drivers/block/nvme*
 F:     include/linux/nvme.h
 
+NXP-NCI NFC DRIVER
+M:     Clément Perrochaud <clement.perrochaud@effinnov.com>
+R:     Charles Gorand <charles.gorand@effinnov.com>
+L:     linux-nfc@lists.01.org (moderated for non-subscribers)
+S:     Supported
+F:     drivers/nfc/nxp-nci
+
 NXP TDA998X DRM DRIVER
 M:     Russell King <rmk+kernel@arm.linux.org.uk>
 S:     Supported
index 7929fac13e1c55ac072d46f6c2d3a6ea10528fa7..107714e4405fd348331c6f2ecdbfc18c43709d51 100644 (file)
@@ -73,4 +73,5 @@ source "drivers/nfc/microread/Kconfig"
 source "drivers/nfc/nfcmrvl/Kconfig"
 source "drivers/nfc/st21nfca/Kconfig"
 source "drivers/nfc/st21nfcb/Kconfig"
+source "drivers/nfc/nxp-nci/Kconfig"
 endmenu
index 6b23a2c6e34adf7c1ed35e0aa7e40aa2e9a7cc66..a4292d790f9b900130462d7f4bf7b3f64e3dec7b 100644 (file)
@@ -13,5 +13,6 @@ obj-$(CONFIG_NFC_MRVL)                += nfcmrvl/
 obj-$(CONFIG_NFC_TRF7970A)     += trf7970a.o
 obj-$(CONFIG_NFC_ST21NFCA)     += st21nfca/
 obj-$(CONFIG_NFC_ST21NFCB)     += st21nfcb/
+obj-$(CONFIG_NFC_NXP_NCI)      += nxp-nci/
 
 ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG
diff --git a/drivers/nfc/nxp-nci/Kconfig b/drivers/nfc/nxp-nci/Kconfig
new file mode 100644 (file)
index 0000000..5f60c7c
--- /dev/null
@@ -0,0 +1,13 @@
+config NFC_NXP_NCI
+       tristate "NXP-NCI NFC driver"
+       depends on NFC_NCI
+       default n
+       ---help---
+         Generic core driver for NXP NCI chips such as the NPC100
+         or PN7150 families.
+         This is a driver based on the NCI NFC kernel layers and
+         will thus not work with NXP libnfc library.
+
+         To compile this driver as a module, choose m here. The module will
+         be called nxp_nci.
+         Say N if unsure.
diff --git a/drivers/nfc/nxp-nci/Makefile b/drivers/nfc/nxp-nci/Makefile
new file mode 100644 (file)
index 0000000..8f1e328
--- /dev/null
@@ -0,0 +1,9 @@
+#
+# Makefile for NXP-NCI NFC driver
+#
+
+nxp-nci-objs = core.o firmware.o
+
+obj-$(CONFIG_NFC_NXP_NCI) += nxp-nci.o
+
+ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG
diff --git a/drivers/nfc/nxp-nci/core.c b/drivers/nfc/nxp-nci/core.c
new file mode 100644 (file)
index 0000000..8979636
--- /dev/null
@@ -0,0 +1,186 @@
+/*
+ * Generic driver for NXP NCI NFC chips
+ *
+ * Copyright (C) 2014  NXP Semiconductors  All rights reserved.
+ *
+ * Authors: Clément Perrochaud <clement.perrochaud@nxp.com>
+ *
+ * Derived from PN544 device driver:
+ * Copyright (C) 2012  Intel Corporation. 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 <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/platform_data/nxp-nci.h>
+
+#include <net/nfc/nci_core.h>
+
+#include "nxp-nci.h"
+
+#define NXP_NCI_HDR_LEN        4
+
+#define NXP_NCI_NFC_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)
+
+static int nxp_nci_open(struct nci_dev *ndev)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+       int r = 0;
+
+       mutex_lock(&info->info_lock);
+
+       if (info->mode != NXP_NCI_MODE_COLD) {
+               r = -EBUSY;
+               goto open_exit;
+       }
+
+       if (info->phy_ops->set_mode)
+               r = info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_NCI);
+
+       info->mode = NXP_NCI_MODE_NCI;
+
+open_exit:
+       mutex_unlock(&info->info_lock);
+       return r;
+}
+
+static int nxp_nci_close(struct nci_dev *ndev)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+       int r = 0;
+
+       mutex_lock(&info->info_lock);
+
+       if (info->phy_ops->set_mode)
+               r = info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_COLD);
+
+       info->mode = NXP_NCI_MODE_COLD;
+
+       mutex_unlock(&info->info_lock);
+       return r;
+}
+
+static int nxp_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+       int r;
+
+       if (!info->phy_ops->write) {
+               r = -ENOTSUPP;
+               goto send_exit;
+       }
+
+       if (info->mode != NXP_NCI_MODE_NCI) {
+               r = -EINVAL;
+               goto send_exit;
+       }
+
+       r = info->phy_ops->write(info->phy_id, skb);
+       if (r < 0)
+               kfree_skb(skb);
+
+send_exit:
+       return r;
+}
+
+static struct nci_ops nxp_nci_ops = {
+       .open = nxp_nci_open,
+       .close = nxp_nci_close,
+       .send = nxp_nci_send,
+       .fw_download = nxp_nci_fw_download,
+};
+
+int nxp_nci_probe(void *phy_id, struct device *pdev,
+                 struct nxp_nci_phy_ops *phy_ops, unsigned int max_payload,
+                 struct nci_dev **ndev)
+{
+       struct nxp_nci_info *info;
+       int r;
+
+       info = devm_kzalloc(pdev, sizeof(struct nxp_nci_info), GFP_KERNEL);
+       if (!info) {
+               r = -ENOMEM;
+               goto probe_exit;
+       }
+
+       info->phy_id = phy_id;
+       info->pdev = pdev;
+       info->phy_ops = phy_ops;
+       info->max_payload = max_payload;
+       INIT_WORK(&info->fw_info.work, nxp_nci_fw_work);
+       init_completion(&info->fw_info.cmd_completion);
+       mutex_init(&info->info_lock);
+
+       if (info->phy_ops->set_mode) {
+               r = info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_COLD);
+               if (r < 0)
+                       goto probe_exit;
+       }
+
+       info->mode = NXP_NCI_MODE_COLD;
+
+       info->ndev = nci_allocate_device(&nxp_nci_ops, NXP_NCI_NFC_PROTOCOLS,
+                                        NXP_NCI_HDR_LEN, 0);
+       if (!info->ndev) {
+               r = -ENOMEM;
+               goto probe_exit;
+       }
+
+       nci_set_parent_dev(info->ndev, pdev);
+       nci_set_drvdata(info->ndev, info);
+       r = nci_register_device(info->ndev);
+       if (r < 0)
+               goto probe_exit_free_nci;
+
+       *ndev = info->ndev;
+
+       goto probe_exit;
+
+probe_exit_free_nci:
+       nci_free_device(info->ndev);
+probe_exit:
+       return r;
+}
+EXPORT_SYMBOL(nxp_nci_probe);
+
+void nxp_nci_remove(struct nci_dev *ndev)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+
+       if (info->mode == NXP_NCI_MODE_FW)
+               nxp_nci_fw_work_complete(info, -ESHUTDOWN);
+       cancel_work_sync(&info->fw_info.work);
+
+       mutex_lock(&info->info_lock);
+
+       if (info->phy_ops->set_mode)
+               info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_COLD);
+
+       nci_unregister_device(ndev);
+       nci_free_device(ndev);
+
+       mutex_unlock(&info->info_lock);
+}
+EXPORT_SYMBOL(nxp_nci_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("NXP NCI NFC driver");
+MODULE_AUTHOR("Clément Perrochaud <clement.perrochaud@nxp.com>");
diff --git a/drivers/nfc/nxp-nci/firmware.c b/drivers/nfc/nxp-nci/firmware.c
new file mode 100644 (file)
index 0000000..08573f9
--- /dev/null
@@ -0,0 +1,324 @@
+/*
+ * Generic driver for NXP NCI NFC chips
+ *
+ * Copyright (C) 2014  NXP Semiconductors  All rights reserved.
+ *
+ * Author: Clément Perrochaud <clement.perrochaud@nxp.com>
+ *
+ * Derived from PN544 device driver:
+ * Copyright (C) 2012  Intel Corporation. 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 <linux/completion.h>
+#include <linux/firmware.h>
+#include <linux/nfc.h>
+#include <linux/unaligned/access_ok.h>
+
+#include "nxp-nci.h"
+
+/* Crypto operations can take up to 30 seconds */
+#define NXP_NCI_FW_ANSWER_TIMEOUT      msecs_to_jiffies(30000)
+
+#define NXP_NCI_FW_CMD_RESET           0xF0
+#define NXP_NCI_FW_CMD_GETVERSION      0xF1
+#define NXP_NCI_FW_CMD_CHECKINTEGRITY  0xE0
+#define NXP_NCI_FW_CMD_WRITE           0xC0
+#define NXP_NCI_FW_CMD_READ            0xA2
+#define NXP_NCI_FW_CMD_GETSESSIONSTATE 0xF2
+#define NXP_NCI_FW_CMD_LOG             0xA7
+#define NXP_NCI_FW_CMD_FORCE           0xD0
+#define NXP_NCI_FW_CMD_GET_DIE_ID      0xF4
+
+#define NXP_NCI_FW_CHUNK_FLAG  0x0400
+
+#define NXP_NCI_FW_RESULT_OK                           0x00
+#define NXP_NCI_FW_RESULT_INVALID_ADDR                 0x01
+#define NXP_NCI_FW_RESULT_GENERIC_ERROR                        0x02
+#define NXP_NCI_FW_RESULT_UNKNOWN_CMD                  0x0B
+#define NXP_NCI_FW_RESULT_ABORTED_CMD                  0x0C
+#define NXP_NCI_FW_RESULT_PLL_ERROR                    0x0D
+#define NXP_NCI_FW_RESULT_ADDR_RANGE_OFL_ERROR         0x1E
+#define NXP_NCI_FW_RESULT_BUFFER_OFL_ERROR             0x1F
+#define NXP_NCI_FW_RESULT_MEM_BSY                      0x20
+#define NXP_NCI_FW_RESULT_SIGNATURE_ERROR              0x21
+#define NXP_NCI_FW_RESULT_FIRMWARE_VERSION_ERROR       0x24
+#define NXP_NCI_FW_RESULT_PROTOCOL_ERROR               0x28
+#define NXP_NCI_FW_RESULT_SFWU_DEGRADED                        0x2A
+#define NXP_NCI_FW_RESULT_PH_STATUS_FIRST_CHUNK                0x2D
+#define NXP_NCI_FW_RESULT_PH_STATUS_NEXT_CHUNK         0x2E
+#define NXP_NCI_FW_RESULT_PH_STATUS_INTERNAL_ERROR_5   0xC5
+
+void nxp_nci_fw_work_complete(struct nxp_nci_info *info, int result)
+{
+       struct nxp_nci_fw_info *fw_info = &info->fw_info;
+       int r;
+
+       if (info->phy_ops->set_mode) {
+               r = info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_COLD);
+               if (r < 0 && result == 0)
+                       result = -r;
+       }
+
+       info->mode = NXP_NCI_MODE_COLD;
+
+       if (fw_info->fw) {
+               release_firmware(fw_info->fw);
+               fw_info->fw = NULL;
+       }
+
+       nfc_fw_download_done(info->ndev->nfc_dev, fw_info->name, (u32) -result);
+}
+
+/* crc_ccitt cannot be used since it is computed MSB first and not LSB first */
+static u16 nxp_nci_fw_crc(u8 const *buffer, size_t len)
+{
+       u16 crc = 0xffff;
+
+       while (len--) {
+               crc = ((crc >> 8) | (crc << 8)) ^ *buffer++;
+               crc ^= (crc & 0xff) >> 4;
+               crc ^= (crc & 0xff) << 12;
+               crc ^= (crc & 0xff) << 5;
+       }
+
+       return crc;
+}
+
+static int nxp_nci_fw_send_chunk(struct nxp_nci_info *info)
+{
+       struct nxp_nci_fw_info *fw_info = &info->fw_info;
+       u16 header, crc;
+       struct sk_buff *skb;
+       size_t chunk_len;
+       size_t remaining_len;
+       int r;
+
+       skb = nci_skb_alloc(info->ndev, info->max_payload, GFP_KERNEL);
+       if (!skb) {
+               r = -ENOMEM;
+               goto chunk_exit;
+       }
+
+       chunk_len = info->max_payload - NXP_NCI_FW_HDR_LEN - NXP_NCI_FW_CRC_LEN;
+       remaining_len = fw_info->frame_size - fw_info->written;
+
+       if (remaining_len > chunk_len) {
+               header = NXP_NCI_FW_CHUNK_FLAG;
+       } else {
+               chunk_len = remaining_len;
+               header = 0x0000;
+       }
+
+       header |= chunk_len & NXP_NCI_FW_FRAME_LEN_MASK;
+       put_unaligned_be16(header, skb_put(skb, NXP_NCI_FW_HDR_LEN));
+
+       memcpy(skb_put(skb, chunk_len), fw_info->data + fw_info->written,
+              chunk_len);
+
+       crc = nxp_nci_fw_crc(skb->data, chunk_len + NXP_NCI_FW_HDR_LEN);
+       put_unaligned_be16(crc, skb_put(skb, NXP_NCI_FW_CRC_LEN));
+
+       r = info->phy_ops->write(info->phy_id, skb);
+       if (r >= 0)
+               r = chunk_len;
+
+       kfree_skb(skb);
+
+chunk_exit:
+       return r;
+}
+
+static int nxp_nci_fw_send(struct nxp_nci_info *info)
+{
+       struct nxp_nci_fw_info *fw_info = &info->fw_info;
+       long completion_rc;
+       int r;
+
+       reinit_completion(&fw_info->cmd_completion);
+
+       if (fw_info->written == 0) {
+               fw_info->frame_size = get_unaligned_be16(fw_info->data) &
+                                     NXP_NCI_FW_FRAME_LEN_MASK;
+               fw_info->data += NXP_NCI_FW_HDR_LEN;
+               fw_info->size -= NXP_NCI_FW_HDR_LEN;
+       }
+
+       if (fw_info->frame_size > fw_info->size)
+               return -EMSGSIZE;
+
+       r = nxp_nci_fw_send_chunk(info);
+       if (r < 0)
+               return r;
+
+       fw_info->written += r;
+
+       if (*fw_info->data == NXP_NCI_FW_CMD_RESET) {
+               fw_info->cmd_result = 0;
+               if (fw_info->fw)
+                       schedule_work(&fw_info->work);
+       } else {
+               completion_rc = wait_for_completion_interruptible_timeout(
+                       &fw_info->cmd_completion, NXP_NCI_FW_ANSWER_TIMEOUT);
+               if (completion_rc == 0)
+                       return -ETIMEDOUT;
+       }
+
+       return 0;
+}
+
+void nxp_nci_fw_work(struct work_struct *work)
+{
+       struct nxp_nci_info *info;
+       struct nxp_nci_fw_info *fw_info;
+       int r;
+
+       fw_info = container_of(work, struct nxp_nci_fw_info, work);
+       info = container_of(fw_info, struct nxp_nci_info, fw_info);
+
+       mutex_lock(&info->info_lock);
+
+       r = fw_info->cmd_result;
+       if (r < 0)
+               goto exit_work;
+
+       if (fw_info->written == fw_info->frame_size) {
+               fw_info->data += fw_info->frame_size;
+               fw_info->size -= fw_info->frame_size;
+               fw_info->written = 0;
+       }
+
+       if (fw_info->size > 0)
+               r = nxp_nci_fw_send(info);
+
+exit_work:
+       if (r < 0 || fw_info->size == 0)
+               nxp_nci_fw_work_complete(info, r);
+       mutex_unlock(&info->info_lock);
+}
+
+int nxp_nci_fw_download(struct nci_dev *ndev, const char *firmware_name)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+       struct nxp_nci_fw_info *fw_info = &info->fw_info;
+       int r;
+
+       mutex_lock(&info->info_lock);
+
+       if (!info->phy_ops->set_mode || !info->phy_ops->write) {
+               r = -ENOTSUPP;
+               goto fw_download_exit;
+       }
+
+       if (!firmware_name || firmware_name[0] == '\0') {
+               r = -EINVAL;
+               goto fw_download_exit;
+       }
+
+       strcpy(fw_info->name, firmware_name);
+
+       r = request_firmware(&fw_info->fw, firmware_name,
+                            ndev->nfc_dev->dev.parent);
+       if (r < 0)
+               goto fw_download_exit;
+
+       r = info->phy_ops->set_mode(info->phy_id, NXP_NCI_MODE_FW);
+       if (r < 0)
+               goto fw_download_exit;
+
+       info->mode = NXP_NCI_MODE_FW;
+
+       fw_info->data = fw_info->fw->data;
+       fw_info->size = fw_info->fw->size;
+       fw_info->written = 0;
+       fw_info->frame_size = 0;
+       fw_info->cmd_result = 0;
+
+       if (fw_info->fw)
+               schedule_work(&fw_info->work);
+
+fw_download_exit:
+       mutex_unlock(&info->info_lock);
+       return r;
+}
+
+static int nxp_nci_fw_read_status(u8 stat)
+{
+       switch (stat) {
+       case NXP_NCI_FW_RESULT_OK:
+               return 0;
+       case NXP_NCI_FW_RESULT_INVALID_ADDR:
+               return -EINVAL;
+       case NXP_NCI_FW_RESULT_UNKNOWN_CMD:
+               return -EINVAL;
+       case NXP_NCI_FW_RESULT_ABORTED_CMD:
+               return -EMSGSIZE;
+       case NXP_NCI_FW_RESULT_ADDR_RANGE_OFL_ERROR:
+               return -EADDRNOTAVAIL;
+       case NXP_NCI_FW_RESULT_BUFFER_OFL_ERROR:
+               return -ENOBUFS;
+       case NXP_NCI_FW_RESULT_MEM_BSY:
+               return -ENOKEY;
+       case NXP_NCI_FW_RESULT_SIGNATURE_ERROR:
+               return -EKEYREJECTED;
+       case NXP_NCI_FW_RESULT_FIRMWARE_VERSION_ERROR:
+               return -EALREADY;
+       case NXP_NCI_FW_RESULT_PROTOCOL_ERROR:
+               return -EPROTO;
+       case NXP_NCI_FW_RESULT_SFWU_DEGRADED:
+               return -EHWPOISON;
+       case NXP_NCI_FW_RESULT_PH_STATUS_FIRST_CHUNK:
+               return 0;
+       case NXP_NCI_FW_RESULT_PH_STATUS_NEXT_CHUNK:
+               return 0;
+       case NXP_NCI_FW_RESULT_PH_STATUS_INTERNAL_ERROR_5:
+               return -EINVAL;
+       default:
+               return -EIO;
+       }
+}
+
+static u16 nxp_nci_fw_check_crc(struct sk_buff *skb)
+{
+       u16 crc, frame_crc;
+       size_t len = skb->len - NXP_NCI_FW_CRC_LEN;
+
+       crc = nxp_nci_fw_crc(skb->data, len);
+       frame_crc = get_unaligned_be16(skb->data + len);
+
+       return (crc ^ frame_crc);
+}
+
+void nxp_nci_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
+{
+       struct nxp_nci_info *info = nci_get_drvdata(ndev);
+       struct nxp_nci_fw_info *fw_info = &info->fw_info;
+
+       complete(&fw_info->cmd_completion);
+
+       if (skb) {
+               if (nxp_nci_fw_check_crc(skb) != 0x00)
+                       fw_info->cmd_result = -EBADMSG;
+               else
+                       fw_info->cmd_result = nxp_nci_fw_read_status(
+                                       *skb_pull(skb, NXP_NCI_FW_HDR_LEN));
+               kfree_skb(skb);
+       } else {
+               fw_info->cmd_result = -EIO;
+       }
+
+       if (fw_info->fw)
+               schedule_work(&fw_info->work);
+}
+EXPORT_SYMBOL(nxp_nci_fw_recv_frame);
diff --git a/drivers/nfc/nxp-nci/nxp-nci.h b/drivers/nfc/nxp-nci/nxp-nci.h
new file mode 100644 (file)
index 0000000..f1fecc4
--- /dev/null
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2014  NXP Semiconductors  All rights reserved.
+ *
+ * Authors: Clément Perrochaud <clement.perrochaud@nxp.com>
+ *
+ * Derived from PN544 device driver:
+ * Copyright (C) 2012  Intel Corporation. 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/>.
+*/
+
+#ifndef __LOCAL_NXP_NCI_H_
+#define __LOCAL_NXP_NCI_H_
+
+#include <linux/completion.h>
+#include <linux/firmware.h>
+#include <linux/nfc.h>
+#include <linux/platform_data/nxp-nci.h>
+
+#include <net/nfc/nci_core.h>
+
+#define NXP_NCI_FW_HDR_LEN     2
+#define NXP_NCI_FW_CRC_LEN     2
+
+#define NXP_NCI_FW_FRAME_LEN_MASK      0x03FF
+
+enum nxp_nci_mode {
+       NXP_NCI_MODE_COLD,
+       NXP_NCI_MODE_NCI,
+       NXP_NCI_MODE_FW
+};
+
+struct nxp_nci_phy_ops {
+       int (*set_mode)(void *id, enum nxp_nci_mode mode);
+       int (*write)(void *id, struct sk_buff *skb);
+};
+
+struct nxp_nci_fw_info {
+       char name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
+       const struct firmware *fw;
+
+       size_t size;
+       size_t written;
+
+       const u8 *data;
+       size_t frame_size;
+
+       struct work_struct work;
+       struct completion cmd_completion;
+
+       int cmd_result;
+};
+
+struct nxp_nci_info {
+       struct nci_dev *ndev;
+       void *phy_id;
+       struct device *pdev;
+
+       enum nxp_nci_mode mode;
+
+       struct nxp_nci_phy_ops *phy_ops;
+       unsigned int max_payload;
+
+       struct mutex info_lock;
+
+       struct nxp_nci_fw_info fw_info;
+};
+
+int nxp_nci_fw_download(struct nci_dev *ndev, const char *firmware_name);
+void nxp_nci_fw_work(struct work_struct *work);
+void nxp_nci_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
+void nxp_nci_fw_work_complete(struct nxp_nci_info *info, int result);
+
+int nxp_nci_probe(void *phy_id, struct device *pdev,
+                 struct nxp_nci_phy_ops *phy_ops, unsigned int max_payload,
+                 struct nci_dev **ndev);
+void nxp_nci_remove(struct nci_dev *ndev);
+
+#endif /* __LOCAL_NXP_NCI_H_ */
diff --git a/include/linux/platform_data/nxp-nci.h b/include/linux/platform_data/nxp-nci.h
new file mode 100644 (file)
index 0000000..d6ed286
--- /dev/null
@@ -0,0 +1,27 @@
+/*
+ * Generic platform data for the NXP NCI NFC chips.
+ *
+ * Copyright (C) 2014  NXP Semiconductors  All rights reserved.
+ *
+ * Authors: Clément Perrochaud <clement.perrochaud@nxp.com>
+ *
+ * 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.
+ */
+
+#ifndef _NXP_NCI_H_
+#define _NXP_NCI_H_
+
+struct nxp_nci_nfc_platform_data {
+       unsigned int gpio_en;
+       unsigned int gpio_fw;
+       unsigned int irq;
+};
+
+#endif /* _NXP_NCI_H_ */