aboutsummaryrefslogtreecommitdiff
path: root/drivers/nfc
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/Kconfig10
-rw-r--r--drivers/nfc/Makefile1
-rw-r--r--drivers/nfc/mei_phy.c164
-rw-r--r--drivers/nfc/mei_phy.h30
-rw-r--r--drivers/nfc/microread/Kconfig2
-rw-r--r--drivers/nfc/microread/mei.c139
-rw-r--r--drivers/nfc/pn533.c653
-rw-r--r--drivers/nfc/pn544/Kconfig13
-rw-r--r--drivers/nfc/pn544/Makefile2
-rw-r--r--drivers/nfc/pn544/mei.c121
10 files changed, 805 insertions, 330 deletions
diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig
index e57034971cc..4775d4e61b8 100644
--- a/drivers/nfc/Kconfig
+++ b/drivers/nfc/Kconfig
@@ -26,6 +26,16 @@ config NFC_WILINK
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_MEI_PHY
+ tristate "MEI bus NFC device support"
+ depends on INTEL_MEI_BUS_NFC && NFC_HCI
+ help
+ This adds support to use an mei bus nfc device. Select this if you
+ will use an HCI NFC driver for an NFC chip connected behind an
+ Intel's Management Engine chip.
+
+ If unsure, say N.
+
source "drivers/nfc/pn544/Kconfig"
source "drivers/nfc/microread/Kconfig"
diff --git a/drivers/nfc/Makefile b/drivers/nfc/Makefile
index a189ada0926..aa6bd657ef4 100644
--- a/drivers/nfc/Makefile
+++ b/drivers/nfc/Makefile
@@ -6,5 +6,6 @@ obj-$(CONFIG_NFC_PN544) += pn544/
obj-$(CONFIG_NFC_MICROREAD) += microread/
obj-$(CONFIG_NFC_PN533) += pn533.o
obj-$(CONFIG_NFC_WILINK) += nfcwilink.o
+obj-$(CONFIG_NFC_MEI_PHY) += mei_phy.o
ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG
diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c
new file mode 100644
index 00000000000..b8f8abc422f
--- /dev/null
+++ b/drivers/nfc/mei_phy.c
@@ -0,0 +1,164 @@
+/*
+ * MEI Library for mei bus nfc device access
+ *
+ * Copyright (C) 2013 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, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/nfc.h>
+
+#include "mei_phy.h"
+
+struct mei_nfc_hdr {
+ u8 cmd;
+ u8 status;
+ u16 req_id;
+ u32 reserved;
+ u16 data_size;
+} __attribute__((packed));
+
+#define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
+
+#define MEI_DUMP_SKB_IN(info, skb) \
+do { \
+ pr_debug("%s:\n", info); \
+ print_hex_dump_debug("mei in : ", DUMP_PREFIX_OFFSET, \
+ 16, 1, (skb)->data, (skb)->len, false); \
+} while (0)
+
+#define MEI_DUMP_SKB_OUT(info, skb) \
+do { \
+ pr_debug("%s:\n", info); \
+ print_hex_dump_debug("mei out: ", DUMP_PREFIX_OFFSET, \
+ 16, 1, (skb)->data, (skb)->len, false); \
+} while (0)
+
+int nfc_mei_phy_enable(void *phy_id)
+{
+ int r;
+ struct nfc_mei_phy *phy = phy_id;
+
+ pr_info("%s\n", __func__);
+
+ if (phy->powered == 1)
+ return 0;
+
+ r = mei_cl_enable_device(phy->device);
+ if (r < 0) {
+ pr_err("MEI_PHY: Could not enable device\n");
+ return r;
+ }
+
+ phy->powered = 1;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nfc_mei_phy_enable);
+
+void nfc_mei_phy_disable(void *phy_id)
+{
+ struct nfc_mei_phy *phy = phy_id;
+
+ pr_info("%s\n", __func__);
+
+ mei_cl_disable_device(phy->device);
+
+ phy->powered = 0;
+}
+EXPORT_SYMBOL_GPL(nfc_mei_phy_disable);
+
+/*
+ * Writing a frame must not return the number of written bytes.
+ * It must return either zero for success, or <0 for error.
+ * In addition, it must not alter the skb
+ */
+static int nfc_mei_phy_write(void *phy_id, struct sk_buff *skb)
+{
+ struct nfc_mei_phy *phy = phy_id;
+ int r;
+
+ MEI_DUMP_SKB_OUT("mei frame sent", skb);
+
+ r = mei_cl_send(phy->device, skb->data, skb->len);
+ if (r > 0)
+ r = 0;
+
+ return r;
+}
+
+void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
+{
+ struct nfc_mei_phy *phy = context;
+
+ if (phy->hard_fault != 0)
+ return;
+
+ if (events & BIT(MEI_CL_EVENT_RX)) {
+ struct sk_buff *skb;
+ int reply_size;
+
+ skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
+ if (!skb)
+ return;
+
+ reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
+ if (reply_size < MEI_NFC_HEADER_SIZE) {
+ kfree(skb);
+ return;
+ }
+
+ skb_put(skb, reply_size);
+ skb_pull(skb, MEI_NFC_HEADER_SIZE);
+
+ MEI_DUMP_SKB_IN("mei frame read", skb);
+
+ nfc_hci_recv_frame(phy->hdev, skb);
+ }
+}
+EXPORT_SYMBOL_GPL(nfc_mei_event_cb);
+
+struct nfc_phy_ops mei_phy_ops = {
+ .write = nfc_mei_phy_write,
+ .enable = nfc_mei_phy_enable,
+ .disable = nfc_mei_phy_disable,
+};
+EXPORT_SYMBOL_GPL(mei_phy_ops);
+
+struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device)
+{
+ struct nfc_mei_phy *phy;
+
+ phy = kzalloc(sizeof(struct nfc_mei_phy), GFP_KERNEL);
+ if (!phy)
+ return NULL;
+
+ phy->device = device;
+ mei_cl_set_drvdata(device, phy);
+
+ return phy;
+}
+EXPORT_SYMBOL_GPL(nfc_mei_phy_alloc);
+
+void nfc_mei_phy_free(struct nfc_mei_phy *phy)
+{
+ kfree(phy);
+}
+EXPORT_SYMBOL_GPL(nfc_mei_phy_free);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("mei bus NFC device interface");
diff --git a/drivers/nfc/mei_phy.h b/drivers/nfc/mei_phy.h
new file mode 100644
index 00000000000..d669900f827
--- /dev/null
+++ b/drivers/nfc/mei_phy.h
@@ -0,0 +1,30 @@
+#ifndef __LOCAL_MEI_PHY_H_
+#define __LOCAL_MEI_PHY_H_
+
+#include <linux/mei_cl_bus.h>
+#include <net/nfc/hci.h>
+
+#define MEI_NFC_HEADER_SIZE 10
+#define MEI_NFC_MAX_HCI_PAYLOAD 300
+
+struct nfc_mei_phy {
+ struct mei_cl_device *device;
+ struct nfc_hci_dev *hdev;
+
+ int powered;
+
+ int hard_fault; /*
+ * < 0 if hardware error occured
+ * and prevents normal operation.
+ */
+};
+
+extern struct nfc_phy_ops mei_phy_ops;
+
+int nfc_mei_phy_enable(void *phy_id);
+void nfc_mei_phy_disable(void *phy_id);
+void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context);
+struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device);
+void nfc_mei_phy_free(struct nfc_mei_phy *phy);
+
+#endif /* __LOCAL_MEI_PHY_H_ */
diff --git a/drivers/nfc/microread/Kconfig b/drivers/nfc/microread/Kconfig
index 572305be6e3..951d5542f6b 100644
--- a/drivers/nfc/microread/Kconfig
+++ b/drivers/nfc/microread/Kconfig
@@ -25,7 +25,7 @@ config NFC_MICROREAD_I2C
config NFC_MICROREAD_MEI
tristate "NFC Microread MEI support"
- depends on NFC_MICROREAD && INTEL_MEI_BUS_NFC
+ depends on NFC_MICROREAD && NFC_MEI_PHY
---help---
This module adds support for the mei interface of adapters using
Inside microread chipsets. Select this if your microread chipset
diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c
index ca33ae19393..1ad044dce7b 100644
--- a/drivers/nfc/microread/mei.c
+++ b/drivers/nfc/microread/mei.c
@@ -19,151 +19,31 @@
*/
#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-#include <linux/mei_cl_bus.h>
-
+#include <linux/mod_devicetable.h>
#include <linux/nfc.h>
#include <net/nfc/hci.h>
#include <net/nfc/llc.h>
+#include "../mei_phy.h"
#include "microread.h"
#define MICROREAD_DRIVER_NAME "microread"
-struct mei_nfc_hdr {
- u8 cmd;
- u8 status;
- u16 req_id;
- u32 reserved;
- u16 data_size;
-} __attribute__((packed));
-
-#define MEI_NFC_HEADER_SIZE 10
-#define MEI_NFC_MAX_HCI_PAYLOAD 300
-#define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
-
-struct microread_mei_phy {
- struct mei_cl_device *device;
- struct nfc_hci_dev *hdev;
-
- int powered;
-
- int hard_fault; /*
- * < 0 if hardware error occured (e.g. i2c err)
- * and prevents normal operation.
- */
-};
-
-#define MEI_DUMP_SKB_IN(info, skb) \
-do { \
- pr_debug("%s:\n", info); \
- print_hex_dump(KERN_DEBUG, "mei in : ", DUMP_PREFIX_OFFSET, \
- 16, 1, (skb)->data, (skb)->len, 0); \
-} while (0)
-
-#define MEI_DUMP_SKB_OUT(info, skb) \
-do { \
- pr_debug("%s:\n", info); \
- print_hex_dump(KERN_DEBUG, "mei out: ", DUMP_PREFIX_OFFSET, \
- 16, 1, (skb)->data, (skb)->len, 0); \
-} while (0)
-
-static int microread_mei_enable(void *phy_id)
-{
- struct microread_mei_phy *phy = phy_id;
-
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- phy->powered = 1;
-
- return 0;
-}
-
-static void microread_mei_disable(void *phy_id)
-{
- struct microread_mei_phy *phy = phy_id;
-
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- phy->powered = 0;
-}
-
-/*
- * Writing a frame must not return the number of written bytes.
- * It must return either zero for success, or <0 for error.
- * In addition, it must not alter the skb
- */
-static int microread_mei_write(void *phy_id, struct sk_buff *skb)
-{
- struct microread_mei_phy *phy = phy_id;
- int r;
-
- MEI_DUMP_SKB_OUT("mei frame sent", skb);
-
- r = mei_cl_send(phy->device, skb->data, skb->len);
- if (r > 0)
- r = 0;
-
- return r;
-}
-
-static void microread_event_cb(struct mei_cl_device *device, u32 events,
- void *context)
-{
- struct microread_mei_phy *phy = context;
-
- if (phy->hard_fault != 0)
- return;
-
- if (events & BIT(MEI_CL_EVENT_RX)) {
- struct sk_buff *skb;
- int reply_size;
-
- skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
- if (!skb)
- return;
-
- reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
- if (reply_size < MEI_NFC_HEADER_SIZE) {
- kfree(skb);
- return;
- }
-
- skb_put(skb, reply_size);
- skb_pull(skb, MEI_NFC_HEADER_SIZE);
-
- MEI_DUMP_SKB_IN("mei frame read", skb);
-
- nfc_hci_recv_frame(phy->hdev, skb);
- }
-}
-
-static struct nfc_phy_ops mei_phy_ops = {
- .write = microread_mei_write,
- .enable = microread_mei_enable,
- .disable = microread_mei_disable,
-};
-
static int microread_mei_probe(struct mei_cl_device *device,
const struct mei_cl_device_id *id)
{
- struct microread_mei_phy *phy;
+ struct nfc_mei_phy *phy;
int r;
pr_info("Probing NFC microread\n");
- phy = kzalloc(sizeof(struct microread_mei_phy), GFP_KERNEL);
+ phy = nfc_mei_phy_alloc(device);
if (!phy) {
pr_err("Cannot allocate memory for microread mei phy.\n");
return -ENOMEM;
}
- phy->device = device;
- mei_cl_set_drvdata(device, phy);
-
- r = mei_cl_register_event_cb(device, microread_event_cb, phy);
+ r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy);
if (r) {
pr_err(MICROREAD_DRIVER_NAME ": event cb registration failed\n");
goto err_out;
@@ -178,23 +58,22 @@ static int microread_mei_probe(struct mei_cl_device *device,
return 0;
err_out:
- kfree(phy);
+ nfc_mei_phy_free(phy);
return r;
}
static int microread_mei_remove(struct mei_cl_device *device)
{
- struct microread_mei_phy *phy = mei_cl_get_drvdata(device);
+ struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
pr_info("Removing microread\n");
microread_remove(phy->hdev);
- if (phy->powered)
- microread_mei_disable(phy);
+ nfc_mei_phy_disable(phy);
- kfree(phy);
+ nfc_mei_phy_free(phy);
return 0;
}
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index f0f6763d67a..8f6f2baa930 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1,9 +1,6 @@
/*
* Copyright (C) 2011 Instituto Nokia de Tecnologia
- *
- * Authors:
- * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
- * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
+ * Copyright (C) 2012-2013 Tieto Poland
*
* 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
@@ -30,7 +27,7 @@
#include <linux/netdevice.h>
#include <net/nfc/nfc.h>
-#define VERSION "0.1"
+#define VERSION "0.2"
#define PN533_VENDOR_ID 0x4CC
#define PN533_PRODUCT_ID 0x2533
@@ -41,8 +38,12 @@
#define SONY_VENDOR_ID 0x054c
#define PASORI_PRODUCT_ID 0x02e1
-#define PN533_DEVICE_STD 0x1
-#define PN533_DEVICE_PASORI 0x2
+#define ACS_VENDOR_ID 0x072f
+#define ACR122U_PRODUCT_ID 0x2200
+
+#define PN533_DEVICE_STD 0x1
+#define PN533_DEVICE_PASORI 0x2
+#define PN533_DEVICE_ACR122U 0x3
#define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\
NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\
@@ -71,6 +72,11 @@ static const struct usb_device_id pn533_table[] = {
.idProduct = PASORI_PRODUCT_ID,
.driver_info = PN533_DEVICE_PASORI,
},
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = ACS_VENDOR_ID,
+ .idProduct = ACR122U_PRODUCT_ID,
+ .driver_info = PN533_DEVICE_ACR122U,
+ },
{ }
};
MODULE_DEVICE_TABLE(usb, pn533_table);
@@ -78,32 +84,47 @@ MODULE_DEVICE_TABLE(usb, pn533_table);
/* How much time we spend listening for initiators */
#define PN533_LISTEN_TIME 2
-/* frame definitions */
-#define PN533_FRAME_HEADER_LEN (sizeof(struct pn533_frame) \
+/* Standard pn533 frame definitions */
+#define PN533_STD_FRAME_HEADER_LEN (sizeof(struct pn533_std_frame) \
+ 2) /* data[0] TFI, data[1] CC */
-#define PN533_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/
+#define PN533_STD_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/
/*
* Max extended frame payload len, excluding TFI and CC
* which are already in PN533_FRAME_HEADER_LEN.
*/
-#define PN533_FRAME_MAX_PAYLOAD_LEN 263
+#define PN533_STD_FRAME_MAX_PAYLOAD_LEN 263
-#define PN533_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),
+#define PN533_STD_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),
Postamble (1) */
-#define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen])
-#define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
+#define PN533_STD_FRAME_CHECKSUM(f) (f->data[f->datalen])
+#define PN533_STD_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
/* start of frame */
-#define PN533_SOF 0x00FF
+#define PN533_STD_FRAME_SOF 0x00FF
+
+/* standard frame identifier: in/out/error */
+#define PN533_STD_FRAME_IDENTIFIER(f) (f->data[0]) /* TFI */
+#define PN533_STD_FRAME_DIR_OUT 0xD4
+#define PN533_STD_FRAME_DIR_IN 0xD5
+
+/* ACS ACR122 pn533 frame definitions */
+#define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \
+ + 2)
+#define PN533_ACR122_TX_FRAME_TAIL_LEN 0
+#define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \
+ + 2)
+#define PN533_ACR122_RX_FRAME_TAIL_LEN 2
+#define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN
+
+/* CCID messages types */
+#define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62
+#define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B
-/* frame identifier: in/out/error */
-#define PN533_FRAME_IDENTIFIER(f) (f->data[0])
-#define PN533_DIR_OUT 0xD4
-#define PN533_DIR_IN 0xD5
+#define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83
/* PN533 Commands */
-#define PN533_FRAME_CMD(f) (f->data[1])
+#define PN533_STD_FRAME_CMD(f) (f->data[1])
#define PN533_CMD_GET_FIRMWARE_VERSION 0x02
#define PN533_CMD_RF_CONFIGURATION 0x32
@@ -128,8 +149,6 @@ MODULE_DEVICE_TABLE(usb, pn533_table);
struct pn533;
-typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, int status);
-
typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg,
struct sk_buff *resp);
@@ -144,9 +163,13 @@ struct pn533_fw_version {
};
/* PN533_CMD_RF_CONFIGURATION */
-#define PN533_CFGITEM_TIMING 0x02
+#define PN533_CFGITEM_RF_FIELD 0x01
+#define PN533_CFGITEM_TIMING 0x02
#define PN533_CFGITEM_MAX_RETRIES 0x05
-#define PN533_CFGITEM_PASORI 0x82
+#define PN533_CFGITEM_PASORI 0x82
+
+#define PN533_CFGITEM_RF_FIELD_ON 0x1
+#define PN533_CFGITEM_RF_FIELD_OFF 0x0
#define PN533_CONFIG_TIMING_102 0xb
#define PN533_CONFIG_TIMING_204 0xc
@@ -313,10 +336,17 @@ struct pn533_cmd_jump_dep_response {
#define PN533_INIT_TARGET_RESP_ACTIVE 0x1
#define PN533_INIT_TARGET_RESP_DEP 0x4
+enum pn533_protocol_type {
+ PN533_PROTO_REQ_ACK_RESP = 0,
+ PN533_PROTO_REQ_RESP
+};
+
struct pn533 {
struct usb_device *udev;
struct usb_interface *interface;
struct nfc_dev *nfc_dev;
+ u32 device_type;
+ enum pn533_protocol_type protocol_type;
struct urb *out_urb;
struct urb *in_urb;
@@ -329,21 +359,21 @@ struct pn533 {
struct work_struct poll_work;
struct work_struct mi_work;
struct work_struct tg_work;
- struct timer_list listen_timer;
- int wq_in_error;
- int cancel_listen;
- pn533_cmd_complete_t cmd_complete;
- void *cmd_complete_arg;
+ struct list_head cmd_queue;
+ struct pn533_cmd *cmd;
+ u8 cmd_pending;
+ struct mutex cmd_lock; /* protects cmd queue */
+
void *cmd_complete_mi_arg;
- struct mutex cmd_lock;
- u8 cmd;
struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
u8 poll_mod_count;
u8 poll_mod_curr;
u32 poll_protocols;
u32 listen_protocols;
+ struct timer_list listen_timer;
+ int cancel_listen;
u8 *gb;
size_t gb_len;
@@ -352,24 +382,21 @@ struct pn533 {
u8 tgt_active_prot;
u8 tgt_mode;
- u32 device_type;
-
- struct list_head cmd_queue;
- u8 cmd_pending;
-
struct pn533_frame_ops *ops;
};
struct pn533_cmd {
struct list_head queue;
- u8 cmd_code;
+ u8 code;
+ int status;
struct sk_buff *req;
struct sk_buff *resp;
int resp_len;
- void *arg;
+ pn533_send_async_complete_t complete_cb;
+ void *complete_cb_context;
};
-struct pn533_frame {
+struct pn533_std_frame {
u8 preamble;
__be16 start_frame;
u8 datalen;
@@ -393,14 +420,124 @@ struct pn533_frame_ops {
u8 (*get_cmd_code)(void *frame);
};
+struct pn533_acr122_ccid_hdr {
+ u8 type;
+ u32 datalen;
+ u8 slot;
+ u8 seq;
+ u8 params[3]; /* 3 msg specific bytes or status, error and 1 specific
+ byte for reposnse msg */
+ u8 data[]; /* payload */
+} __packed;
+
+struct pn533_acr122_apdu_hdr {
+ u8 class;
+ u8 ins;
+ u8 p1;
+ u8 p2;
+} __packed;
+
+struct pn533_acr122_tx_frame {
+ struct pn533_acr122_ccid_hdr ccid;
+ struct pn533_acr122_apdu_hdr apdu;
+ u8 datalen;
+ u8 data[]; /* pn533 frame: TFI ... */
+} __packed;
+
+struct pn533_acr122_rx_frame {
+ struct pn533_acr122_ccid_hdr ccid;
+ u8 data[]; /* pn533 frame : TFI ... */
+} __packed;
+
+static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code)
+{
+ struct pn533_acr122_tx_frame *frame = _frame;
+
+ frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE;
+ frame->ccid.datalen = sizeof(frame->apdu) + 1; /* sizeof(apdu_hdr) +
+ sizeof(datalen) */
+ frame->ccid.slot = 0;
+ frame->ccid.seq = 0;
+ frame->ccid.params[0] = 0;
+ frame->ccid.params[1] = 0;
+ frame->ccid.params[2] = 0;
+
+ frame->data[0] = PN533_STD_FRAME_DIR_OUT;
+ frame->data[1] = cmd_code;
+ frame->datalen = 2; /* data[0] + data[1] */
+
+ frame->apdu.class = 0xFF;
+ frame->apdu.ins = 0;
+ frame->apdu.p1 = 0;
+ frame->apdu.p2 = 0;
+}
+
+static void pn533_acr122_tx_frame_finish(void *_frame)
+{
+ struct pn533_acr122_tx_frame *frame = _frame;
+
+ frame->ccid.datalen += frame->datalen;
+}
+
+static void pn533_acr122_tx_update_payload_len(void *_frame, int len)
+{
+ struct pn533_acr122_tx_frame *frame = _frame;
+
+ frame->datalen += len;
+}
+
+static bool pn533_acr122_is_rx_frame_valid(void *_frame)
+{
+ struct pn533_acr122_rx_frame *frame = _frame;
+
+ if (frame->ccid.type != 0x83)
+ return false;
+
+ if (frame->data[frame->ccid.datalen - 2] == 0x63)
+ return false;
+
+ return true;
+}
+
+static int pn533_acr122_rx_frame_size(void *frame)
+{
+ struct pn533_acr122_rx_frame *f = frame;
+
+ /* f->ccid.datalen already includes tail length */
+ return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen;
+}
+
+static u8 pn533_acr122_get_cmd_code(void *frame)
+{
+ struct pn533_acr122_rx_frame *f = frame;
+
+ return PN533_STD_FRAME_CMD(f);
+}
+
+static struct pn533_frame_ops pn533_acr122_frame_ops = {
+ .tx_frame_init = pn533_acr122_tx_frame_init,
+ .tx_frame_finish = pn533_acr122_tx_frame_finish,
+ .tx_update_payload_len = pn533_acr122_tx_update_payload_len,
+ .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN,
+ .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN,
+
+ .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid,
+ .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN,
+ .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN,
+ .rx_frame_size = pn533_acr122_rx_frame_size,
+
+ .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN,
+ .get_cmd_code = pn533_acr122_get_cmd_code,
+};
+
/* The rule: value + checksum = 0 */
-static inline u8 pn533_checksum(u8 value)
+static inline u8 pn533_std_checksum(u8 value)
{
return ~value + 1;
}
/* The rule: sum(data elements) + checksum = 0 */
-static u8 pn533_data_checksum(u8 *data, int datalen)
+static u8 pn533_std_data_checksum(u8 *data, int datalen)
{
u8 sum = 0;
int i;
@@ -408,61 +545,61 @@ static u8 pn533_data_checksum(u8 *data, int datalen)
for (i = 0; i < datalen; i++)
sum += data[i];
- return pn533_checksum(sum);
+ return pn533_std_checksum(sum);
}
-static void pn533_tx_frame_init(void *_frame, u8 cmd_code)
+static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code)
{
- struct pn533_frame *frame = _frame;
+ struct pn533_std_frame *frame = _frame;
frame->preamble = 0;
- frame->start_frame = cpu_to_be16(PN533_SOF);
- PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT;
- PN533_FRAME_CMD(frame) = cmd_code;
+ frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF);
+ PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT;
+ PN533_STD_FRAME_CMD(frame) = cmd_code;
frame->datalen = 2;
}
-static void pn533_tx_frame_finish(void *_frame)
+static void pn533_std_tx_frame_finish(void *_frame)
{
- struct pn533_frame *frame = _frame;
+ struct pn533_std_frame *frame = _frame;
- frame->datalen_checksum = pn533_checksum(frame->datalen);
+ frame->datalen_checksum = pn533_std_checksum(frame->datalen);
- PN533_FRAME_CHECKSUM(frame) =
- pn533_data_checksum(frame->data, frame->datalen);
+ PN533_STD_FRAME_CHECKSUM(frame) =
+ pn533_std_data_checksum(frame->data, frame->datalen);
- PN533_FRAME_POSTAMBLE(frame) = 0;
+ PN533_STD_FRAME_POSTAMBLE(frame) = 0;
}
-static void pn533_tx_update_payload_len(void *_frame, int len)
+static void pn533_std_tx_update_payload_len(void *_frame, int len)
{
- struct pn533_frame *frame = _frame;
+ struct pn533_std_frame *frame = _frame;
frame->datalen += len;
}
-static bool pn533_rx_frame_is_valid(void *_frame)
+static bool pn533_std_rx_frame_is_valid(void *_frame)
{
u8 checksum;
- struct pn533_frame *frame = _frame;
+ struct pn533_std_frame *frame = _frame;
- if (frame->start_frame != cpu_to_be16(PN533_SOF))
+ if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
return false;
- checksum = pn533_checksum(frame->datalen);
+ checksum = pn533_std_checksum(frame->datalen);
if (checksum != frame->datalen_checksum)
return false;
- checksum = pn533_data_checksum(frame->data, frame->datalen);
- if (checksum != PN533_FRAME_CHECKSUM(frame))
+ checksum = pn533_std_data_checksum(frame->data, frame->datalen);
+ if (checksum != PN533_STD_FRAME_CHECKSUM(frame))
return false;
return true;
}
-static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
+static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame)
{
- if (frame->start_frame != cpu_to_be16(PN533_SOF))
+ if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
return false;
if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
@@ -471,57 +608,51 @@ static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
return true;
}
-static inline int pn533_rx_frame_size(void *frame)
+static inline int pn533_std_rx_frame_size(void *frame)
{
- struct pn533_frame *f = frame;
+ struct pn533_std_frame *f = frame;
- return sizeof(struct pn533_frame) + f->datalen + PN533_FRAME_TAIL_LEN;
+ return sizeof(struct pn533_std_frame) + f->datalen +
+ PN533_STD_FRAME_TAIL_LEN;
}
-static u8 pn533_get_cmd_code(void *frame)
+static u8 pn533_std_get_cmd_code(void *frame)
{
- struct pn533_frame *f = frame;
+ struct pn533_std_frame *f = frame;
- return PN533_FRAME_CMD(f);
+ return PN533_STD_FRAME_CMD(f);
}
static struct pn533_frame_ops pn533_std_frame_ops = {
- .tx_frame_init = pn533_tx_frame_init,
- .tx_frame_finish = pn533_tx_frame_finish,
- .tx_update_payload_len = pn533_tx_update_payload_len,
- .tx_header_len = PN533_FRAME_HEADER_LEN,
- .tx_tail_len = PN533_FRAME_TAIL_LEN,
-
- .rx_is_frame_valid = pn533_rx_frame_is_valid,
- .rx_frame_size = pn533_rx_frame_size,
- .rx_header_len = PN533_FRAME_HEADER_LEN,
- .rx_tail_len = PN533_FRAME_TAIL_LEN,
-
- .max_payload_len = PN533_FRAME_MAX_PAYLOAD_LEN,
- .get_cmd_code = pn533_get_cmd_code,
+ .tx_frame_init = pn533_std_tx_frame_init,
+ .tx_frame_finish = pn533_std_tx_frame_finish,
+ .tx_update_payload_len = pn533_std_tx_update_payload_len,
+ .tx_header_len = PN533_STD_FRAME_HEADER_LEN,
+ .tx_tail_len = PN533_STD_FRAME_TAIL_LEN,
+
+ .rx_is_frame_valid = pn533_std_rx_frame_is_valid,
+ .rx_frame_size = pn533_std_rx_frame_size,
+ .rx_header_len = PN533_STD_FRAME_HEADER_LEN,
+ .rx_tail_len = PN533_STD_FRAME_TAIL_LEN,
+
+ .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN,
+ .get_cmd_code = pn533_std_get_cmd_code,
};
static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame)
{
- return (dev->ops->get_cmd_code(frame) == PN533_CMD_RESPONSE(dev->cmd));
-}
-
-
-static void pn533_wq_cmd_complete(struct work_struct *work)
-{
- struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
- int rc;
-
- rc = dev->cmd_complete(dev, dev->cmd_complete_arg, dev->wq_in_error);
- if (rc != -EINPROGRESS)
- queue_work(dev->wq, &dev->cmd_work);
+ return (dev->ops->get_cmd_code(frame) ==
+ PN533_CMD_RESPONSE(dev->cmd->code));
}
static void pn533_recv_response(struct urb *urb)
{
struct pn533 *dev = urb->context;
+ struct pn533_cmd *cmd = dev->cmd;
u8 *in_frame;
+ cmd->status = urb->status;
+
switch (urb->status) {
case 0:
break; /* success */
@@ -530,37 +661,33 @@ static void pn533_recv_response(struct urb *urb)
nfc_dev_dbg(&dev->interface->dev,
"The urb has been canceled (status %d)",
urb->status);
- dev->wq_in_error = urb->status;
goto sched_wq;
case -ESHUTDOWN:
default:
nfc_dev_err(&dev->interface->dev,
"Urb failure (status %d)", urb->status);
- dev->wq_in_error = urb->status;
goto sched_wq;
}
in_frame = dev->in_urb->transfer_buffer;
nfc_dev_dbg(&dev->interface->dev, "Received a frame.");
- print_hex_dump(KERN_DEBUG, "PN533 RX: ", DUMP_PREFIX_NONE, 16, 1,
- in_frame, dev->ops->rx_frame_size(in_frame), false);
+ print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame,
+ dev->ops->rx_frame_size(in_frame), false);
if (!dev->ops->rx_is_frame_valid(in_frame)) {
nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
- dev->wq_in_error = -EIO;
+ cmd->status = -EIO;
goto sched_wq;
}
if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) {
nfc_dev_err(&dev->interface->dev,
"It it not the response to the last command");
- dev->wq_in_error = -EIO;
+ cmd->status = -EIO;
goto sched_wq;
}
- dev->wq_in_error = 0;
-
sched_wq:
queue_work(dev->wq, &dev->cmd_complete_work);
}
@@ -575,9 +702,12 @@ static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags)
static void pn533_recv_ack(struct urb *urb)
{
struct pn533 *dev = urb->context;
- struct pn533_frame *in_frame;
+ struct pn533_cmd *cmd = dev->cmd;
+ struct pn533_std_frame *in_frame;
int rc;
+ cmd->status = urb->status;
+
switch (urb->status) {
case 0:
break; /* success */
@@ -586,21 +716,19 @@ static void pn533_recv_ack(struct urb *urb)
nfc_dev_dbg(&dev->interface->dev,
"The urb has been stopped (status %d)",
urb->status);
- dev->wq_in_error = urb->status;
goto sched_wq;
case -ESHUTDOWN:
default:
nfc_dev_err(&dev->interface->dev,
"Urb failure (status %d)", urb->status);
- dev->wq_in_error = urb->status;
goto sched_wq;
}
in_frame = dev->in_urb->transfer_buffer;
- if (!pn533_rx_frame_is_ack(in_frame)) {
+ if (!pn533_std_rx_frame_is_ack(in_frame)) {
nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
- dev->wq_in_error = -EIO;
+ cmd->status = -EIO;
goto sched_wq;
}
@@ -608,7 +736,7 @@ static void pn533_recv_ack(struct urb *urb)
if (rc) {
nfc_dev_err(&dev->interface->dev,
"usb_submit_urb failed with result %d", rc);
- dev->wq_in_error = rc;
+ cmd->status = rc;
goto sched_wq;
}
@@ -627,7 +755,7 @@ static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags)
static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
{
- u8 ack[PN533_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00};
+ u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00};
/* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */
int rc;
@@ -643,32 +771,34 @@ static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
static int __pn533_send_frame_async(struct pn533 *dev,
struct sk_buff *out,
struct sk_buff *in,
- int in_len,
- pn533_cmd_complete_t cmd_complete,
- void *arg)
+ int in_len)
{
int rc;
- dev->cmd = dev->ops->get_cmd_code(out->data);
- dev->cmd_complete = cmd_complete;
- dev->cmd_complete_arg = arg;
-
dev->out_urb->transfer_buffer = out->data;
dev->out_urb->transfer_buffer_length = out->len;
dev->in_urb->transfer_buffer = in->data;
dev->in_urb->transfer_buffer_length = in_len;
- print_hex_dump(KERN_DEBUG, "PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
- out->data, out->len, false);
+ print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
+ out->data, out->len, false);
rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
if (rc)
return rc;
- rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL);
- if (rc)
- goto error;
+ if (dev->protocol_type == PN533_PROTO_REQ_RESP) {
+ /* request for response for sent packet directly */
+ rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
+ if (rc)
+ goto error;
+ } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) {
+ /* request for ACK if that's the case */
+ rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL);
+ if (rc)
+ goto error;
+ }
return 0;
@@ -693,39 +823,34 @@ static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code,
ops->tx_frame_finish(skb->data);
}
-struct pn533_send_async_complete_arg {
- pn533_send_async_complete_t complete_cb;
- void *complete_cb_context;
- struct sk_buff *resp;
- struct sk_buff *req;
-};
-
-static int pn533_send_async_complete(struct pn533 *dev, void *_arg, int status)
+static int pn533_send_async_complete(struct pn533 *dev)
{
- struct pn533_send_async_complete_arg *arg = _arg;
+ struct pn533_cmd *cmd = dev->cmd;
+ int status = cmd->status;
- struct sk_buff *req = arg->req;
- struct sk_buff *resp = arg->resp;
+ struct sk_buff *req = cmd->req;
+ struct sk_buff *resp = cmd->resp;
int rc;
dev_kfree_skb(req);
if (status < 0) {
- arg->complete_cb(dev, arg->complete_cb_context,
- ERR_PTR(status));
+ rc = cmd->complete_cb(dev, cmd->complete_cb_context,
+ ERR_PTR(status));
dev_kfree_skb(resp);
- kfree(arg);
- return status;
+ goto done;
}
skb_put(resp, dev->ops->rx_frame_size(resp->data));
skb_pull(resp, dev->ops->rx_header_len);
skb_trim(resp, resp->len - dev->ops->rx_tail_len);
- rc = arg->complete_cb(dev, arg->complete_cb_context, resp);
+ rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp);
- kfree(arg);
+done:
+ kfree(cmd);
+ dev->cmd = NULL;
return rc;
}
@@ -736,56 +861,45 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
void *complete_cb_context)
{
struct pn533_cmd *cmd;
- struct pn533_send_async_complete_arg *arg;
int rc = 0;
nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code);
- arg = kzalloc(sizeof(*arg), GFP_KERNEL);
- if (!arg)
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd)
return -ENOMEM;
- arg->complete_cb = complete_cb;
- arg->complete_cb_context = complete_cb_context;
- arg->resp = resp;
- arg->req = req;
+ cmd->code = cmd_code;
+ cmd->req = req;
+ cmd->resp = resp;
+ cmd->resp_len = resp_len;
+ cmd->complete_cb = complete_cb;
+ cmd->complete_cb_context = complete_cb_context;
pn533_build_cmd_frame(dev, cmd_code, req);
mutex_lock(&dev->cmd_lock);
if (!dev->cmd_pending) {
- rc = __pn533_send_frame_async(dev, req, resp, resp_len,
- pn533_send_async_complete, arg);
+ rc = __pn533_send_frame_async(dev, req, resp, resp_len);
if (rc)
goto error;
dev->cmd_pending = 1;
+ dev->cmd = cmd;
goto unlock;
}
nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__,
cmd_code);
- cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
- if (!cmd) {
- rc = -ENOMEM;
- goto error;
- }
-
INIT_LIST_HEAD(&cmd->queue);
- cmd->cmd_code = cmd_code;
- cmd->req = req;
- cmd->resp = resp;
- cmd->resp_len = resp_len;
- cmd->arg = arg;
-
list_add_tail(&cmd->queue, &dev->cmd_queue);
goto unlock;
error:
- kfree(arg);
+ kfree(cmd);
unlock:
mutex_unlock(&dev->cmd_lock);
return rc;
@@ -850,8 +964,8 @@ static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
pn533_send_async_complete_t complete_cb,
void *complete_cb_context)
{
- struct pn533_send_async_complete_arg *arg;
struct sk_buff *resp;
+ struct pn533_cmd *cmd;
int rc;
int resp_len = dev->ops->rx_header_len +
dev->ops->max_payload_len +
@@ -861,33 +975,47 @@ static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
if (!resp)
return -ENOMEM;
- arg = kzalloc(sizeof(*arg), GFP_KERNEL);
- if (!arg) {
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd) {
dev_kfree_skb(resp);
return -ENOMEM;
}
- arg->complete_cb = complete_cb;
- arg->complete_cb_context = complete_cb_context;
- arg->resp = resp;
- arg->req = req;
+ cmd->code = cmd_code;
+ cmd->req = req;
+ cmd->resp = resp;
+ cmd->resp_len = resp_len;
+ cmd->complete_cb = complete_cb;
+ cmd->complete_cb_context = complete_cb_context;
pn533_build_cmd_frame(dev, cmd_code, req);
- rc = __pn533_send_frame_async(dev, req, resp, resp_len,
- pn533_send_async_complete, arg);
+ rc = __pn533_send_frame_async(dev, req, resp, resp_len);
if (rc < 0) {
dev_kfree_skb(resp);
- kfree(arg);
+ kfree(cmd);
+ } else {
+ dev->cmd = cmd;
}
return rc;
}
+static void pn533_wq_cmd_complete(struct work_struct *work)
+{
+ struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
+ int rc;
+
+ rc = pn533_send_async_complete(dev);
+ if (rc != -EINPROGRESS)
+ queue_work(dev->wq, &dev->cmd_work);
+}
+
static void pn533_wq_cmd(struct work_struct *work)
{
struct pn533 *dev = container_of(work, struct pn533, cmd_work);
struct pn533_cmd *cmd;
+ int rc;
mutex_lock(&dev->cmd_lock);
@@ -903,10 +1031,15 @@ static void pn533_wq_cmd(struct work_struct *work)
mutex_unlock(&dev->cmd_lock);
- __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len,
- pn533_send_async_complete, cmd->arg);
+ rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len);
+ if (rc < 0) {
+ dev_kfree_skb(cmd->req);
+ dev_kfree_skb(cmd->resp);
+ kfree(cmd);
+ return;
+ }
- kfree(cmd);
+ dev->cmd = cmd;
}
struct pn533_sync_cmd_response {
@@ -982,6 +1115,23 @@ static void pn533_send_complete(struct urb *urb)
}
}
+static void pn533_abort_cmd(struct pn533 *dev, gfp_t flags)
+{
+ /* ACR122U does not support any command which aborts last
+ * issued command i.e. as ACK for standard PN533. Additionally,
+ * it behaves stange, sending broken or incorrect responses,
+ * when we cancel urb before the chip will send response.
+ */
+ if (dev->device_type == PN533_DEVICE_ACR122U)
+ return;
+
+ /* An ack will cancel the last issued command */
+ pn533_send_ack(dev, flags);
+
+ /* cancel the urb request */
+ usb_kill_urb(dev->in_urb);
+}
+
static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size)
{
struct sk_buff *skb;
@@ -1500,9 +1650,6 @@ static void pn533_listen_mode_timer(unsigned long data)
nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
- /* An ack will cancel the last issued command (poll) */
- pn533_send_ack(dev, GFP_ATOMIC);
-
dev->cancel_listen = 1;
pn533_poll_next_mod(dev);
@@ -1549,6 +1696,11 @@ static int pn533_poll_complete(struct pn533 *dev, void *arg,
if (!rc)
goto done;
+ if (!dev->poll_mod_count) {
+ nfc_dev_dbg(&dev->interface->dev, "Polling has been stoped.");
+ goto done;
+ }
+
pn533_poll_next_mod(dev);
queue_work(dev->wq, &dev->poll_work);
@@ -1627,7 +1779,7 @@ static void pn533_wq_poll(struct work_struct *work)
if (dev->cancel_listen == 1) {
dev->cancel_listen = 0;
- usb_kill_urb(dev->in_urb);
+ pn533_abort_cmd(dev, GFP_ATOMIC);
}
rc = pn533_send_poll_frame(dev);
@@ -1689,12 +1841,7 @@ static void pn533_stop_poll(struct nfc_dev *nfc_dev)
return;
}
- /* An ack will cancel the last issued command (poll) */
- pn533_send_ack(dev, GFP_KERNEL);
-
- /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
- usb_kill_urb(dev->in_urb);
-
+ pn533_abort_cmd(dev, GFP_KERNEL);
pn533_poll_reset_mod_list(dev);
}
@@ -1723,6 +1870,8 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
rsp = (struct pn533_cmd_activate_response *)resp->data;
rc = rsp->status & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS) {
+ nfc_dev_err(&dev->interface->dev,
+ "Target activation failed (error 0x%x)", rc);
dev_kfree_skb(resp);
return -EIO;
}
@@ -1850,7 +1999,7 @@ static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
rc = rsp->status & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS) {
nfc_dev_err(&dev->interface->dev,
- "Bringing DEP link up failed %d", rc);
+ "Bringing DEP link up failed (error 0x%x)", rc);
goto error;
}
@@ -1985,10 +2134,8 @@ static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
pn533_poll_reset_mod_list(dev);
- if (dev->tgt_mode || dev->tgt_active_prot) {
- pn533_send_ack(dev, GFP_KERNEL);
- usb_kill_urb(dev->in_urb);
- }
+ if (dev->tgt_mode || dev->tgt_active_prot)
+ pn533_abort_cmd(dev, GFP_KERNEL);
dev->tgt_active_prot = 0;
dev->tgt_mode = 0;
@@ -2064,8 +2211,7 @@ static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
if (ret != PN533_CMD_RET_SUCCESS) {
nfc_dev_err(&dev->interface->dev,
- "PN533 reported error %d when exchanging data",
- ret);
+ "Exchanging data failed (error 0x%x)", ret);
rc = -EIO;
goto error;
}
@@ -2253,7 +2399,7 @@ static void pn533_wq_mi_recv(struct work_struct *work)
"Error %d when trying to perform data_exchange", rc);
dev_kfree_skb(skb);
- kfree(dev->cmd_complete_arg);
+ kfree(dev->cmd_complete_mi_arg);
error:
pn533_send_ack(dev, GFP_KERNEL);
@@ -2310,7 +2456,7 @@ static int pn533_get_firmware_version(struct pn533 *dev,
return 0;
}
-static int pn533_fw_reset(struct pn533 *dev)
+static int pn533_pasori_fw_reset(struct pn533 *dev)
{
struct sk_buff *skb;
struct sk_buff *resp;
@@ -2332,9 +2478,102 @@ static int pn533_fw_reset(struct pn533 *dev)
return 0;
}
+struct pn533_acr122_poweron_rdr_arg {
+ int rc;
+ struct completion done;
+};
+
+static void pn533_acr122_poweron_rdr_resp(struct urb *urb)
+{
+ struct pn533_acr122_poweron_rdr_arg *arg = urb->context;
+
+ nfc_dev_dbg(&urb->dev->dev, "%s", __func__);
+
+ print_hex_dump(KERN_ERR, "ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1,
+ urb->transfer_buffer, urb->transfer_buffer_length,
+ false);
+
+ arg->rc = urb->status;
+ complete(&arg->done);
+}
+
+static int pn533_acr122_poweron_rdr(struct pn533 *dev)
+{
+ /* Power on th reader (CCID cmd) */
+ u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON,
+ 0, 0, 0, 0, 0, 0, 3, 0, 0};
+ u8 buf[255];
+ int rc;
+ void *cntx;
+ struct pn533_acr122_poweron_rdr_arg arg;
+
+ nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+
+ init_completion(&arg.done);
+ cntx = dev->in_urb->context; /* backup context */
+
+ dev->in_urb->transfer_buffer = buf;
+ dev->in_urb->transfer_buffer_length = 255;
+ dev->in_urb->complete = pn533_acr122_poweron_rdr_resp;
+ dev->in_urb->context = &arg;
+
+ dev->out_urb->transfer_buffer = cmd;
+ dev->out_urb->transfer_buffer_length = sizeof(cmd);
+
+ print_hex_dump(KERN_ERR, "ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1,
+ cmd, sizeof(cmd), false);
+
+ rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
+ if (rc) {
+ nfc_dev_err(&dev->interface->dev,
+ "Reader power on cmd error %d", rc);
+ return rc;
+ }
+
+ rc = usb_submit_urb(dev->in_urb, GFP_KERNEL);
+ if (rc) {
+ nfc_dev_err(&dev->interface->dev,
+ "Can't submit for reader power on cmd response %d",
+ rc);
+ return rc;
+ }
+
+ wait_for_completion(&arg.done);
+ dev->in_urb->context = cntx; /* restore context */
+
+ return arg.rc;
+}
+
+static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf)
+{
+ struct pn533 *dev = nfc_get_drvdata(nfc_dev);
+ u8 rf_field = !!rf;
+ int rc;
+
+ rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD,
+ (u8 *)&rf_field, 1);
+ if (rc) {
+ nfc_dev_err(&dev->interface->dev,
+ "Error on setting RF field");
+ return rc;
+ }
+
+ return rc;
+}
+
+int pn533_dev_up(struct nfc_dev *nfc_dev)
+{
+ return pn533_rf_field(nfc_dev, 1);
+}
+
+int pn533_dev_down(struct nfc_dev *nfc_dev)
+{
+ return pn533_rf_field(nfc_dev, 0);
+}
+
static struct nfc_ops pn533_nfc_ops = {
- .dev_up = NULL,
- .dev_down = NULL,
+ .dev_up = pn533_dev_up,
+ .dev_down = pn533_dev_down,
.dep_link_up = pn533_dep_link_up,
.dep_link_down = pn533_dep_link_down,
.start_poll = pn533_start_poll,
@@ -2366,6 +2605,7 @@ static int pn533_setup(struct pn533 *dev)
break;
case PN533_DEVICE_PASORI:
+ case PN533_DEVICE_ACR122U:
max_retries.mx_rty_atr = 0x2;
max_retries.mx_rty_psl = 0x1;
max_retries.mx_rty_passive_act =
@@ -2405,7 +2645,7 @@ static int pn533_setup(struct pn533 *dev)
break;
case PN533_DEVICE_PASORI:
- pn533_fw_reset(dev);
+ pn533_pasori_fw_reset(dev);
rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
pasori_cfg, 3);
@@ -2415,7 +2655,7 @@ static int pn533_setup(struct pn533 *dev)
return rc;
}
- pn533_fw_reset(dev);
+ pn533_pasori_fw_reset(dev);
break;
}
@@ -2496,6 +2736,7 @@ static int pn533_probe(struct usb_interface *interface,
dev->ops = &pn533_std_frame_ops;
+ dev->protocol_type = PN533_PROTO_REQ_ACK_RESP;
dev->device_type = id->driver_info;
switch (dev->device_type) {
case PN533_DEVICE_STD:
@@ -2506,6 +2747,20 @@ static int pn533_probe(struct usb_interface *interface,
protocols = PN533_NO_TYPE_B_PROTOCOLS;
break;
+ case PN533_DEVICE_ACR122U:
+ protocols = PN533_NO_TYPE_B_PROTOCOLS;
+ dev->ops = &pn533_acr122_frame_ops;
+ dev->protocol_type = PN533_PROTO_REQ_RESP,
+
+ rc = pn533_acr122_poweron_rdr(dev);
+ if (rc < 0) {
+ nfc_dev_err(&dev->interface->dev,
+ "Couldn't poweron the reader (error %d)",
+ rc);
+ goto destroy_wq;
+ }
+ break;
+
default:
nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
dev->device_type);
@@ -2555,6 +2810,7 @@ destroy_wq:
error:
usb_free_urb(dev->in_urb);
usb_free_urb(dev->out_urb);
+ usb_put_dev(dev->udev);
kfree(dev);
return rc;
}
@@ -2600,8 +2856,9 @@ static struct usb_driver pn533_driver = {
module_usb_driver(pn533_driver);
-MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
- " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
+MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
+MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
+MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
MODULE_DESCRIPTION("PN533 usb driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
diff --git a/drivers/nfc/pn544/Kconfig b/drivers/nfc/pn544/Kconfig
index c277790ac71..ccf06f5f6eb 100644
--- a/drivers/nfc/pn544/Kconfig
+++ b/drivers/nfc/pn544/Kconfig
@@ -20,4 +20,15 @@ config NFC_PN544_I2C
Select this if your platform is using the i2c bus.
If you choose to build a module, it'll be called pn544_i2c.
- Say N if unsure. \ No newline at end of file
+ Say N if unsure.
+
+config NFC_PN544_MEI
+ tristate "NFC PN544 MEI support"
+ depends on NFC_PN544 && NFC_MEI_PHY
+ ---help---
+ This module adds support for the mei interface of adapters using
+ NXP pn544 chipsets. Select this if your pn544 chipset
+ is handled by Intel's Management Engine Interface on your platform.
+
+ If you choose to build a module, it'll be called pn544_mei.
+ Say N if unsure.
diff --git a/drivers/nfc/pn544/Makefile b/drivers/nfc/pn544/Makefile
index ac076793687..29fb5a17403 100644
--- a/drivers/nfc/pn544/Makefile
+++ b/drivers/nfc/pn544/Makefile
@@ -3,6 +3,8 @@
#
pn544_i2c-objs = i2c.o
+pn544_mei-objs = mei.o
obj-$(CONFIG_NFC_PN544) += pn544.o
obj-$(CONFIG_NFC_PN544_I2C) += pn544_i2c.o
+obj-$(CONFIG_NFC_PN544_MEI) += pn544_mei.o
diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c
new file mode 100644
index 00000000000..1eb48848a35
--- /dev/null
+++ b/drivers/nfc/pn544/mei.c
@@ -0,0 +1,121 @@
+/*
+ * HCI based Driver for NXP pn544 NFC Chip
+ *
+ * Copyright (C) 2013 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, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/nfc.h>
+#include <net/nfc/hci.h>
+#include <net/nfc/llc.h>
+
+#include "../mei_phy.h"
+#include "pn544.h"
+
+#define PN544_DRIVER_NAME "pn544"
+
+static int pn544_mei_probe(struct mei_cl_device *device,
+ const struct mei_cl_device_id *id)
+{
+ struct nfc_mei_phy *phy;
+ int r;
+
+ pr_info("Probing NFC pn544\n");
+
+ phy = nfc_mei_phy_alloc(device);
+ if (!phy) {
+ pr_err("Cannot allocate memory for pn544 mei phy.\n");
+ return -ENOMEM;
+ }
+
+ r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy);
+ if (r) {
+ pr_err(PN544_DRIVER_NAME ": event cb registration failed\n");
+ goto err_out;
+ }
+
+ r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
+ MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
+ &phy->hdev);
+ if (r < 0)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ nfc_mei_phy_free(phy);
+
+ return r;
+}
+
+static int pn544_mei_remove(struct mei_cl_device *device)
+{
+ struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
+
+ pr_info("Removing pn544\n");
+
+ pn544_hci_remove(phy->hdev);
+
+ nfc_mei_phy_disable(phy);
+
+ nfc_mei_phy_free(phy);
+
+ return 0;
+}
+
+static struct mei_cl_device_id pn544_mei_tbl[] = {
+ { PN544_DRIVER_NAME },
+
+ /* required last entry */
+ { }
+};
+MODULE_DEVICE_TABLE(mei, pn544_mei_tbl);
+
+static struct mei_cl_driver pn544_driver = {
+ .id_table = pn544_mei_tbl,
+ .name = PN544_DRIVER_NAME,
+
+ .probe = pn544_mei_probe,
+ .remove = pn544_mei_remove,
+};
+
+static int pn544_mei_init(void)
+{
+ int r;
+
+ pr_debug(DRIVER_DESC ": %s\n", __func__);
+
+ r = mei_cl_driver_register(&pn544_driver);
+ if (r) {
+ pr_err(PN544_DRIVER_NAME ": driver registration failed\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static void pn544_mei_exit(void)
+{
+ mei_cl_driver_unregister(&pn544_driver);
+}
+
+module_init(pn544_mei_init);
+module_exit(pn544_mei_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-02 07:14:51 +0000