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Message-Id: <1421940460-14049-3-git-send-email-clement.perrochaud@effinnov.com>
Date: Thu, 22 Jan 2015 16:27:38 +0100
From: clement.perrochaud@...innov.com
To: linux-nfc@...ts.01.org
Cc: Clément Perrochaud <clement.perrochaud@....com>,
sunil.jogi@....com, jerome.pele@....com,
Charles.Gorand-Effinnov@....com, lauro.venancio@...nbossa.org,
aloisio.almeida@...nbossa.org, sameo@...ux.intel.com,
robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
davem@...emloft.net, grant.likely@...aro.org, lefrique@...vell.com,
christophe.ricard@...il.com, cuissard@...vell.com,
bzhao@...vell.com, hirent@...vell.com, akarwar@...vell.com,
linux-wireless@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
Clément Perrochaud
<clement.perrochaud@...innov.com>
Subject: [PATCH 2/4] NFC: nxp-nci: Add support for NXP NCI chips
From: Clément Perrochaud <clement.perrochaud@....com>
Add support for NXP NCI NFC controllers.
Signed-off-by: Clément Perrochaud <clement.perrochaud@....com>
Signed-off-by: Clément Perrochaud <clement.perrochaud@...innov.com>
---
MAINTAINERS | 9 +-
drivers/nfc/Kconfig | 2 +
drivers/nfc/Makefile | 1 +
drivers/nfc/nxp-nci/Kconfig | 12 ++
drivers/nfc/nxp-nci/Makefile | 9 +
drivers/nfc/nxp-nci/core.c | 187 ++++++++++++++++++++
drivers/nfc/nxp-nci/firmware.c | 321 ++++++++++++++++++++++++++++++++++
drivers/nfc/nxp-nci/nxp-nci.h | 91 ++++++++++
include/linux/platform_data/nxp-nci.h | 27 +++
9 files changed, 658 insertions(+), 1 deletion(-)
create mode 100644 drivers/nfc/nxp-nci/Kconfig
create mode 100644 drivers/nfc/nxp-nci/Makefile
create mode 100644 drivers/nfc/nxp-nci/core.c
create mode 100644 drivers/nfc/nxp-nci/firmware.c
create mode 100644 drivers/nfc/nxp-nci/nxp-nci.h
create mode 100644 include/linux/platform_data/nxp-nci.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 7ec37a3..48b92f3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -686,7 +686,7 @@ L: alsa-devel@...a-project.org (moderated for non-subscribers)
W: http://blackfin.uclinux.org/
S: Supported
F: sound/soc/blackfin/*
-
+
ANALOG DEVICES INC IIO DRIVERS
M: Lars-Peter Clausen <lars@...afoo.de>
M: Michael Hennerich <Michael.Hennerich@...log.com>
@@ -6577,6 +6577,13 @@ S: Supported
F: drivers/block/nvme*
F: include/linux/nvme.h
+NXP-NCI NFC DRIVER
+M: Clément Perrochaud <clement.perrochaud@...innov.com>
+R: Charles Gorand <charles.gorand@...innov.com>
+L: linux-nfc@...ts.01.org (moderated for non-subscribers)
+S: Supported
+F: drivers/nfc/nxp-nci
+
NXP TDA998X DRM DRIVER
M: Russell King <rmk+kernel@....linux.org.uk>
S: Supported
diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig
index 7929fac..3da31e9 100644
--- a/drivers/nfc/Kconfig
+++ b/drivers/nfc/Kconfig
@@ -73,4 +73,6 @@ 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
diff --git a/drivers/nfc/Makefile b/drivers/nfc/Makefile
index 6b23a2c..a4292d79 100644
--- a/drivers/nfc/Makefile
+++ b/drivers/nfc/Makefile
@@ -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
index 0000000..5107edd
--- /dev/null
+++ b/drivers/nfc/nxp-nci/Kconfig
@@ -0,0 +1,12 @@
+config NFC_NXP_NCI
+ tristate "NXP-NCI NFC driver"
+ depends on NFC_NCI
+ default n
+ ---help---
+ Generic core driver for NXP NCI chips.
+ 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
index 0000000..8f1e328
--- /dev/null
+++ b/drivers/nfc/nxp-nci/Makefile
@@ -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
index 0000000..d3643ef
--- /dev/null
+++ b/drivers/nfc/nxp-nci/core.c
@@ -0,0 +1,187 @@
+/*
+ * Generic driver for NXP NCI NFC chips
+ *
+ * Copyright (C) 2014 NXP Semiconductors All rights reserved.
+ *
+ * Authors: Clément Perrochaud <clement.perrochaud@....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->enable)
+ r = info->phy_ops->enable(info->phy_id);
+
+ 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->disable)
+ r = info->phy_ops->disable(info->phy_id);
+
+ 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->disable) {
+ r = info->phy_ops->disable(info->phy_id);
+ 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);
+
+ mutex_lock(&info->info_lock);
+
+ cancel_work_sync(&info->fw_info.work);
+
+ if (info->mode == NXP_NCI_MODE_FW)
+ nxp_nci_fw_work_complete(info, -ESHUTDOWN);
+
+ if (info->phy_ops->disable)
+ info->phy_ops->disable(info->phy_id);
+
+ 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@....com>");
diff --git a/drivers/nfc/nxp-nci/firmware.c b/drivers/nfc/nxp-nci/firmware.c
new file mode 100644
index 0000000..1814e9f
--- /dev/null
+++ b/drivers/nfc/nxp-nci/firmware.c
@@ -0,0 +1,321 @@
+/*
+ * Generic driver for NXP NCI NFC chips
+ *
+ * Copyright (C) 2014 NXP Semiconductors All rights reserved.
+ *
+ * Author: Clément Perrochaud <clement.perrochaud@....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->disable) {
+ r = info->phy_ops->disable(info->phy_id);
+ 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;
+ 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->fw_enable || !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->fw_enable(info->phy_id);
+ 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;
+
+ 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;
+ }
+
+ 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
index 0000000..4309328
--- /dev/null
+++ b/drivers/nfc/nxp-nci/nxp-nci.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2014 NXP Semiconductors All rights reserved.
+ *
+ * Authors: Clément Perrochaud <clement.perrochaud@....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 (*enable)(void *id);
+ int (*fw_enable)(void *id);
+ int (*disable)(void *id);
+ 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
index 0000000..d6ed286
--- /dev/null
+++ b/include/linux/platform_data/nxp-nci.h
@@ -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@....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_ */
--
Clément Perrochaud
Eff'Innov Technologies
Caen, Aix-En-Provence, Grenoble
Eff'Innov Technologies
Campus EffiScience
2, Esplanade Anton Philips
14460 Colombelles, FRANCE
http://www.effinnov.com
--
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