* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-#include <linux/crc-ccitt.h>
-#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
-#include <linux/miscdevice.h>
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
#include <linux/nfc.h>
#include <net/nfc/hci.h>
-#include <net/nfc/shdlc.h>
+#include <net/nfc/llc.h>
-#include <linux/nfc/pn544.h>
-
-#define DRIVER_DESC "HCI NFC driver for PN544"
-
-#define PN544_HCI_DRIVER_NAME "pn544_hci"
+#include "pn544.h"
/* Timing restrictions (ms) */
#define PN544_HCI_RESETVEN_TIME 30
-static struct i2c_device_id pn544_hci_id_table[] = {
- {"pn544", 0},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, pn544_hci_id_table);
-
#define HCI_MODE 0
#define FW_MODE 1
-/* framing in HCI mode */
-#define PN544_HCI_LLC_LEN 1
-#define PN544_HCI_LLC_CRC 2
-#define PN544_HCI_LLC_LEN_CRC (PN544_HCI_LLC_LEN + PN544_HCI_LLC_CRC)
-#define PN544_HCI_LLC_MIN_SIZE (1 + PN544_HCI_LLC_LEN_CRC)
-#define PN544_HCI_LLC_MAX_PAYLOAD 29
-#define PN544_HCI_LLC_MAX_SIZE (PN544_HCI_LLC_LEN_CRC + 1 + \
- PN544_HCI_LLC_MAX_PAYLOAD)
-
enum pn544_state {
PN544_ST_COLD,
PN544_ST_FW_READY,
#define PN544_SYS_MGMT_INFO_NOTIFICATION 0x02
#define PN544_POLLING_LOOP_MGMT_GATE 0x94
+#define PN544_DEP_MODE 0x01
+#define PN544_DEP_ATR_REQ 0x02
+#define PN544_DEP_ATR_RES 0x03
+#define PN544_DEP_MERGE 0x0D
#define PN544_PL_RDPHASES 0x06
#define PN544_PL_EMULATION 0x07
#define PN544_PL_NFCT_DEACTIVATED 0x09
#define PN544_NFC_WI_MGMT_GATE 0xA1
+#define PN544_HCI_EVT_SND_DATA 0x01
+#define PN544_HCI_EVT_ACTIVATED 0x02
+#define PN544_HCI_EVT_DEACTIVATED 0x03
+#define PN544_HCI_EVT_RCV_DATA 0x04
+#define PN544_HCI_EVT_CONTINUE_MI 0x05
+
+#define PN544_HCI_CMD_ATTREQUEST 0x12
+#define PN544_HCI_CMD_CONTINUE_ACTIVATION 0x13
+
static struct nfc_hci_gate pn544_gates[] = {
{NFC_HCI_ADMIN_GATE, NFC_HCI_INVALID_PIPE},
{NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
#define PN544_CMDS_HEADROOM 2
struct pn544_hci_info {
- struct i2c_client *i2c_dev;
- struct nfc_shdlc *shdlc;
+ struct nfc_phy_ops *phy_ops;
+ void *phy_id;
+
+ struct nfc_hci_dev *hdev;
enum pn544_state state;
struct mutex info_lock;
- unsigned int gpio_en;
- unsigned int gpio_irq;
- unsigned int gpio_fw;
- unsigned int en_polarity;
-
- int hard_fault; /*
- * < 0 if hardware error occured (e.g. i2c err)
- * and prevents normal operation.
- */
+ int async_cb_type;
+ data_exchange_cb_t async_cb;
+ void *async_cb_context;
};
-static void pn544_hci_platform_init(struct pn544_hci_info *info)
-{
- int polarity, retry, ret;
- char rset_cmd[] = { 0x05, 0xF9, 0x04, 0x00, 0xC3, 0xE5 };
- int count = sizeof(rset_cmd);
-
- pr_info(DRIVER_DESC ": %s\n", __func__);
- dev_info(&info->i2c_dev->dev, "Detecting nfc_en polarity\n");
-
- /* Disable fw download */
- gpio_set_value(info->gpio_fw, 0);
-
- for (polarity = 0; polarity < 2; polarity++) {
- info->en_polarity = polarity;
- retry = 3;
- while (retry--) {
- /* power off */
- gpio_set_value(info->gpio_en, !info->en_polarity);
- usleep_range(10000, 15000);
-
- /* power on */
- gpio_set_value(info->gpio_en, info->en_polarity);
- usleep_range(10000, 15000);
-
- /* send reset */
- dev_dbg(&info->i2c_dev->dev, "Sending reset cmd\n");
- ret = i2c_master_send(info->i2c_dev, rset_cmd, count);
- if (ret == count) {
- dev_info(&info->i2c_dev->dev,
- "nfc_en polarity : active %s\n",
- (polarity == 0 ? "low" : "high"));
- goto out;
- }
- }
- }
-
- dev_err(&info->i2c_dev->dev,
- "Could not detect nfc_en polarity, fallback to active high\n");
-
-out:
- gpio_set_value(info->gpio_en, !info->en_polarity);
-}
-
-static int pn544_hci_enable(struct pn544_hci_info *info, int mode)
-{
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- gpio_set_value(info->gpio_fw, 0);
- gpio_set_value(info->gpio_en, info->en_polarity);
- usleep_range(10000, 15000);
-
- return 0;
-}
-
-static void pn544_hci_disable(struct pn544_hci_info *info)
-{
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- gpio_set_value(info->gpio_fw, 0);
- gpio_set_value(info->gpio_en, !info->en_polarity);
- usleep_range(10000, 15000);
-
- gpio_set_value(info->gpio_en, info->en_polarity);
- usleep_range(10000, 15000);
-
- gpio_set_value(info->gpio_en, !info->en_polarity);
- usleep_range(10000, 15000);
-}
-
-static int pn544_hci_i2c_write(struct i2c_client *client, u8 *buf, int len)
-{
- int r;
-
- usleep_range(3000, 6000);
-
- r = i2c_master_send(client, buf, len);
-
- if (r == -EREMOTEIO) { /* Retry, chip was in standby */
- usleep_range(6000, 10000);
- r = i2c_master_send(client, buf, len);
- }
-
- if (r >= 0 && r != len)
- r = -EREMOTEIO;
-
- return r;
-}
-
-static int check_crc(u8 *buf, int buflen)
-{
- int len;
- u16 crc;
-
- len = buf[0] + 1;
- crc = crc_ccitt(0xffff, buf, len - 2);
- crc = ~crc;
-
- if (buf[len - 2] != (crc & 0xff) || buf[len - 1] != (crc >> 8)) {
- pr_err(PN544_HCI_DRIVER_NAME ": CRC error 0x%x != 0x%x 0x%x\n",
- crc, buf[len - 1], buf[len - 2]);
-
- pr_info(DRIVER_DESC ": %s : BAD CRC\n", __func__);
- print_hex_dump(KERN_DEBUG, "crc: ", DUMP_PREFIX_NONE,
- 16, 2, buf, buflen, false);
- return -EPERM;
- }
- return 0;
-}
-
-/*
- * Reads an shdlc frame and returns it in a newly allocated sk_buff. Guarantees
- * that i2c bus will be flushed and that next read will start on a new frame.
- * returned skb contains only LLC header and payload.
- * returns:
- * -EREMOTEIO : i2c read error (fatal)
- * -EBADMSG : frame was incorrect and discarded
- * -ENOMEM : cannot allocate skb, frame dropped
- */
-static int pn544_hci_i2c_read(struct i2c_client *client, struct sk_buff **skb)
-{
- int r;
- u8 len;
- u8 tmp[PN544_HCI_LLC_MAX_SIZE - 1];
-
- r = i2c_master_recv(client, &len, 1);
- if (r != 1) {
- dev_err(&client->dev, "cannot read len byte\n");
- return -EREMOTEIO;
- }
-
- if ((len < (PN544_HCI_LLC_MIN_SIZE - 1)) ||
- (len > (PN544_HCI_LLC_MAX_SIZE - 1))) {
- dev_err(&client->dev, "invalid len byte\n");
- r = -EBADMSG;
- goto flush;
- }
-
- *skb = alloc_skb(1 + len, GFP_KERNEL);
- if (*skb == NULL) {
- r = -ENOMEM;
- goto flush;
- }
-
- *skb_put(*skb, 1) = len;
-
- r = i2c_master_recv(client, skb_put(*skb, len), len);
- if (r != len) {
- kfree_skb(*skb);
- return -EREMOTEIO;
- }
-
- r = check_crc((*skb)->data, (*skb)->len);
- if (r != 0) {
- kfree_skb(*skb);
- r = -EBADMSG;
- goto flush;
- }
-
- skb_pull(*skb, 1);
- skb_trim(*skb, (*skb)->len - 2);
-
- usleep_range(3000, 6000);
-
- return 0;
-
-flush:
- if (i2c_master_recv(client, tmp, sizeof(tmp)) < 0)
- r = -EREMOTEIO;
-
- usleep_range(3000, 6000);
-
- return r;
-}
-
-/*
- * Reads an shdlc frame from the chip. This is not as straightforward as it
- * seems. There are cases where we could loose the frame start synchronization.
- * The frame format is len-data-crc, and corruption can occur anywhere while
- * transiting on i2c bus, such that we could read an invalid len.
- * In order to recover synchronization with the next frame, we must be sure
- * to read the real amount of data without using the len byte. We do this by
- * assuming the following:
- * - the chip will always present only one single complete frame on the bus
- * before triggering the interrupt
- * - the chip will not present a new frame until we have completely read
- * the previous one (or until we have handled the interrupt).
- * The tricky case is when we read a corrupted len that is less than the real
- * len. We must detect this here in order to determine that we need to flush
- * the bus. This is the reason why we check the crc here.
- */
-static irqreturn_t pn544_hci_irq_thread_fn(int irq, void *dev_id)
-{
- struct pn544_hci_info *info = dev_id;
- struct i2c_client *client = info->i2c_dev;
- struct sk_buff *skb = NULL;
- int r;
-
- BUG_ON(!info);
- BUG_ON(irq != info->i2c_dev->irq);
-
- dev_dbg(&client->dev, "IRQ\n");
-
- if (info->hard_fault != 0)
- return IRQ_HANDLED;
-
- r = pn544_hci_i2c_read(client, &skb);
- if (r == -EREMOTEIO) {
- info->hard_fault = r;
-
- nfc_shdlc_recv_frame(info->shdlc, NULL);
-
- return IRQ_HANDLED;
- } else if ((r == -ENOMEM) || (r == -EBADMSG)) {
- return IRQ_HANDLED;
- }
-
- nfc_shdlc_recv_frame(info->shdlc, skb);
-
- return IRQ_HANDLED;
-}
-
-static int pn544_hci_open(struct nfc_shdlc *shdlc)
+static int pn544_hci_open(struct nfc_hci_dev *hdev)
{
- struct pn544_hci_info *info = nfc_shdlc_get_clientdata(shdlc);
+ struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
int r = 0;
mutex_lock(&info->info_lock);
goto out;
}
- r = pn544_hci_enable(info, HCI_MODE);
+ r = info->phy_ops->enable(info->phy_id);
if (r == 0)
info->state = PN544_ST_READY;
return r;
}
-static void pn544_hci_close(struct nfc_shdlc *shdlc)
+static void pn544_hci_close(struct nfc_hci_dev *hdev)
{
- struct pn544_hci_info *info = nfc_shdlc_get_clientdata(shdlc);
+ struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
mutex_lock(&info->info_lock);
if (info->state == PN544_ST_COLD)
goto out;
- pn544_hci_disable(info);
+ info->phy_ops->disable(info->phy_id);
info->state = PN544_ST_COLD;
mutex_unlock(&info->info_lock);
}
-static int pn544_hci_ready(struct nfc_shdlc *shdlc)
+static int pn544_hci_ready(struct nfc_hci_dev *hdev)
{
- struct nfc_hci_dev *hdev = nfc_shdlc_get_hci_dev(shdlc);
struct sk_buff *skb;
static struct hw_config {
u8 adr[2];
return 0;
}
-static int pn544_hci_xmit(struct nfc_shdlc *shdlc, struct sk_buff *skb)
+static int pn544_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
{
- struct pn544_hci_info *info = nfc_shdlc_get_clientdata(shdlc);
- struct i2c_client *client = info->i2c_dev;
-
- if (info->hard_fault != 0)
- return info->hard_fault;
+ struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
- return pn544_hci_i2c_write(client, skb->data, skb->len);
+ return info->phy_ops->write(info->phy_id, skb);
}
-static int pn544_hci_start_poll(struct nfc_shdlc *shdlc,
+static int pn544_hci_start_poll(struct nfc_hci_dev *hdev,
u32 im_protocols, u32 tm_protocols)
{
- struct nfc_hci_dev *hdev = nfc_shdlc_get_hci_dev(shdlc);
u8 phases = 0;
int r;
u8 duration[2];
u8 activated;
+ u8 i_mode = 0x3f; /* Enable all supported modes */
+ u8 t_mode = 0x0f;
+ u8 t_merge = 0x01; /* Enable merge by default */
pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
__func__, im_protocols, tm_protocols);
if (r < 0)
return r;
+ if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
+ hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
+ &hdev->gb_len);
+ pr_debug("generate local bytes %p", hdev->gb);
+ if (hdev->gb == NULL || hdev->gb_len == 0) {
+ im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+ tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+ }
+ }
+
+ if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ r = nfc_hci_send_event(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_set_param(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ PN544_DEP_MODE, &i_mode, 1);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_set_param(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ PN544_DEP_ATR_REQ, hdev->gb, hdev->gb_len);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_send_event(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
+ if (r < 0)
+ nfc_hci_send_event(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ }
+
+ if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
+ PN544_DEP_MODE, &t_mode, 1);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
+ PN544_DEP_ATR_RES, hdev->gb, hdev->gb_len);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
+ PN544_DEP_MERGE, &t_merge, 1);
+ if (r < 0)
+ return r;
+ }
+
r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
if (r < 0)
return r;
}
-static int pn544_hci_target_from_gate(struct nfc_shdlc *shdlc, u8 gate,
+static int pn544_hci_dep_link_up(struct nfc_hci_dev *hdev,
+ struct nfc_target *target, u8 comm_mode,
+ u8 *gb, size_t gb_len)
+{
+ struct sk_buff *rgb_skb = NULL;
+ int r;
+
+ r = nfc_hci_get_param(hdev, target->hci_reader_gate,
+ PN544_DEP_ATR_RES, &rgb_skb);
+ if (r < 0)
+ return r;
+
+ if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+ print_hex_dump(KERN_DEBUG, "remote gb: ", DUMP_PREFIX_OFFSET,
+ 16, 1, rgb_skb->data, rgb_skb->len, true);
+
+ r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
+ rgb_skb->len);
+
+ if (r == 0)
+ r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
+ NFC_RF_INITIATOR);
+exit:
+ kfree_skb(rgb_skb);
+ return r;
+}
+
+static int pn544_hci_dep_link_down(struct nfc_hci_dev *hdev)
+{
+
+ return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+}
+
+static int pn544_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
struct nfc_target *target)
{
switch (gate) {
target->supported_protocols = NFC_PROTO_JEWEL_MASK;
target->sens_res = 0x0c00;
break;
+ case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
+ target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
+ break;
default:
return -EPROTO;
}
return 0;
}
-static int pn544_hci_complete_target_discovered(struct nfc_shdlc *shdlc,
+static int pn544_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
u8 gate,
struct nfc_target *target)
{
- struct nfc_hci_dev *hdev = nfc_shdlc_get_hci_dev(shdlc);
struct sk_buff *uid_skb;
int r = 0;
- if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
+ if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE)
+ return r;
+
+ if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ r = nfc_hci_send_cmd(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ PN544_HCI_CMD_CONTINUE_ACTIVATION, NULL, 0, NULL);
+ if (r < 0)
+ return r;
+
+ target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
+ } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
target->nfcid1_len != 10)
return -EPROTO;
PN544_RF_READER_CMD_ACTIVATE_NEXT,
uid_skb->data, uid_skb->len, NULL);
kfree_skb(uid_skb);
+
+ r = nfc_hci_send_cmd(hdev,
+ PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ PN544_HCI_CMD_CONTINUE_ACTIVATION,
+ NULL, 0, NULL);
+ if (r < 0)
+ return r;
+
+ target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
+ target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
} else if (target->supported_protocols & NFC_PROTO_ISO14443_MASK) {
/*
* TODO: maybe other ISO 14443 require some kind of continue
return r;
}
+#define PN544_CB_TYPE_READER_F 1
+
+static void pn544_hci_data_exchange_cb(void *context, struct sk_buff *skb,
+ int err)
+{
+ struct pn544_hci_info *info = context;
+
+ switch (info->async_cb_type) {
+ case PN544_CB_TYPE_READER_F:
+ if (err == 0)
+ skb_pull(skb, 1);
+ info->async_cb(info->async_cb_context, skb, err);
+ break;
+ default:
+ if (err == 0)
+ kfree_skb(skb);
+ break;
+ }
+}
+
#define MIFARE_CMD_AUTH_KEY_A 0x60
#define MIFARE_CMD_AUTH_KEY_B 0x61
#define MIFARE_CMD_HEADER 2
* <= 0: driver handled the data exchange
* 1: driver doesn't especially handle, please do standard processing
*/
-static int pn544_hci_data_exchange(struct nfc_shdlc *shdlc,
+static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev,
struct nfc_target *target,
- struct sk_buff *skb,
- struct sk_buff **res_skb)
+ struct sk_buff *skb, data_exchange_cb_t cb,
+ void *cb_context)
{
- struct nfc_hci_dev *hdev = nfc_shdlc_get_hci_dev(shdlc);
- int r;
+ struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
pr_info(DRIVER_DESC ": %s for gate=%d\n", __func__,
target->hci_reader_gate);
memcpy(data, uid, MIFARE_UID_LEN);
}
- return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- PN544_MIFARE_CMD,
- skb->data, skb->len, res_skb);
+ return nfc_hci_send_cmd_async(hdev,
+ target->hci_reader_gate,
+ PN544_MIFARE_CMD,
+ skb->data, skb->len,
+ cb, cb_context);
} else
return 1;
case PN544_RF_READER_F_GATE:
*skb_push(skb, 1) = 0;
*skb_push(skb, 1) = 0;
- r = nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- PN544_FELICA_RAW,
- skb->data, skb->len, res_skb);
- if (r == 0)
- skb_pull(*res_skb, 1);
- return r;
+ info->async_cb_type = PN544_CB_TYPE_READER_F;
+ info->async_cb = cb;
+ info->async_cb_context = cb_context;
+
+ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+ PN544_FELICA_RAW, skb->data,
+ skb->len,
+ pn544_hci_data_exchange_cb, info);
case PN544_RF_READER_JEWEL_GATE:
- return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- PN544_JEWEL_RAW_CMD,
- skb->data, skb->len, res_skb);
+ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+ PN544_JEWEL_RAW_CMD, skb->data,
+ skb->len, cb, cb_context);
+ case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
+ *skb_push(skb, 1) = 0;
+
+ return nfc_hci_send_event(hdev, target->hci_reader_gate,
+ PN544_HCI_EVT_SND_DATA, skb->data,
+ skb->len);
default:
return 1;
}
}
-static int pn544_hci_check_presence(struct nfc_shdlc *shdlc,
+static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+ /* Set default false for multiple information chaining */
+ *skb_push(skb, 1) = 0;
+
+ return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
+ PN544_HCI_EVT_SND_DATA, skb->data, skb->len);
+}
+
+static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
struct nfc_target *target)
{
- struct nfc_hci_dev *hdev = nfc_shdlc_get_hci_dev(shdlc);
+ pr_debug("supported protocol %d", target->supported_protocols);
+ if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
+ NFC_PROTO_ISO14443_B_MASK)) {
+ return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+ PN544_RF_READER_CMD_PRESENCE_CHECK,
+ NULL, 0, NULL);
+ } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
+ if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
+ target->nfcid1_len != 10)
+ return -EOPNOTSUPP;
+
+ return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
+ PN544_RF_READER_CMD_ACTIVATE_NEXT,
+ target->nfcid1, target->nfcid1_len, NULL);
+ } else if (target->supported_protocols & NFC_PROTO_JEWEL_MASK) {
+ return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+ PN544_JEWEL_RAW_CMD, NULL, 0, NULL);
+ } else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
+ return nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
+ PN544_FELICA_RAW, NULL, 0, NULL);
+ } else if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+ PN544_HCI_CMD_ATTREQUEST,
+ NULL, 0, NULL);
+ }
- return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- PN544_RF_READER_CMD_PRESENCE_CHECK,
- NULL, 0, NULL);
+ return 0;
}
-static struct nfc_shdlc_ops pn544_shdlc_ops = {
+static void pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate,
+ u8 event, struct sk_buff *skb)
+{
+ struct sk_buff *rgb_skb = NULL;
+ int r = 0;
+
+ pr_debug("hci event %d", event);
+ switch (event) {
+ case PN544_HCI_EVT_ACTIVATED:
+ if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE)
+ nfc_hci_target_discovered(hdev, gate);
+ else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) {
+ r = nfc_hci_get_param(hdev, gate, PN544_DEP_ATR_REQ,
+ &rgb_skb);
+
+ if (r < 0)
+ goto exit;
+
+ nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
+ NFC_COMM_PASSIVE, rgb_skb->data,
+ rgb_skb->len);
+
+ kfree_skb(rgb_skb);
+ }
+
+ break;
+ case PN544_HCI_EVT_DEACTIVATED:
+ nfc_hci_send_event(hdev, gate,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ break;
+ case PN544_HCI_EVT_RCV_DATA:
+ if (skb->len < 2) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ if (skb->data[0] != 0) {
+ pr_debug("data0 %d", skb->data[0]);
+ r = -EPROTO;
+ goto exit;
+ }
+
+ skb_pull(skb, 2);
+ nfc_tm_data_received(hdev->ndev, skb);
+
+ return;
+ default:
+ break;
+ }
+
+exit:
+ kfree_skb(skb);
+}
+
+static struct nfc_hci_ops pn544_hci_ops = {
.open = pn544_hci_open,
.close = pn544_hci_close,
.hci_ready = pn544_hci_ready,
.xmit = pn544_hci_xmit,
.start_poll = pn544_hci_start_poll,
+ .dep_link_up = pn544_hci_dep_link_up,
+ .dep_link_down = pn544_hci_dep_link_down,
.target_from_gate = pn544_hci_target_from_gate,
.complete_target_discovered = pn544_hci_complete_target_discovered,
- .data_exchange = pn544_hci_data_exchange,
+ .im_transceive = pn544_hci_im_transceive,
+ .tm_send = pn544_hci_tm_send,
.check_presence = pn544_hci_check_presence,
+ .event_received = pn544_hci_event_received,
};
-static int __devinit pn544_hci_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
+ int phy_headroom, int phy_tailroom, int phy_payload,
+ struct nfc_hci_dev **hdev)
{
struct pn544_hci_info *info;
- struct pn544_nfc_platform_data *pdata;
- int r = 0;
u32 protocols;
struct nfc_hci_init_data init_data;
-
- 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)) {
- dev_err(&client->dev, "Need I2C_FUNC_I2C\n");
- return -ENODEV;
- }
+ int r;
info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
if (!info) {
- dev_err(&client->dev,
- "Cannot allocate memory for pn544_hci_info.\n");
+ pr_err("Cannot allocate memory for pn544_hci_info.\n");
r = -ENOMEM;
goto err_info_alloc;
}
- info->i2c_dev = client;
+ info->phy_ops = phy_ops;
+ info->phy_id = phy_id;
info->state = PN544_ST_COLD;
mutex_init(&info->info_lock);
- i2c_set_clientdata(client, info);
-
- pdata = client->dev.platform_data;
- if (pdata == NULL) {
- dev_err(&client->dev, "No platform data\n");
- r = -EINVAL;
- goto err_pdata;
- }
-
- if (pdata->request_resources == NULL) {
- dev_err(&client->dev, "request_resources() missing\n");
- r = -EINVAL;
- goto err_pdata;
- }
-
- r = pdata->request_resources(client);
- if (r) {
- dev_err(&client->dev, "Cannot get platform resources\n");
- goto err_pdata;
- }
-
- info->gpio_en = pdata->get_gpio(NFC_GPIO_ENABLE);
- info->gpio_fw = pdata->get_gpio(NFC_GPIO_FW_RESET);
- info->gpio_irq = pdata->get_gpio(NFC_GPIO_IRQ);
-
- pn544_hci_platform_init(info);
-
- r = request_threaded_irq(client->irq, NULL, pn544_hci_irq_thread_fn,
- IRQF_TRIGGER_RISING, PN544_HCI_DRIVER_NAME,
- info);
- if (r < 0) {
- dev_err(&client->dev, "Unable to register IRQ handler\n");
- goto err_rti;
- }
init_data.gate_count = ARRAY_SIZE(pn544_gates);
NFC_PROTO_ISO14443_B_MASK |
NFC_PROTO_NFC_DEP_MASK;
- info->shdlc = nfc_shdlc_allocate(&pn544_shdlc_ops,
- &init_data, protocols,
- PN544_CMDS_HEADROOM, 0,
- PN544_HCI_LLC_MAX_PAYLOAD,
- dev_name(&client->dev));
- if (!info->shdlc) {
- dev_err(&client->dev, "Cannot allocate nfc shdlc.\n");
+ info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data,
+ protocols, llc_name,
+ phy_headroom + PN544_CMDS_HEADROOM,
+ phy_tailroom, phy_payload);
+ if (!info->hdev) {
+ pr_err("Cannot allocate nfc hdev.\n");
r = -ENOMEM;
- goto err_allocshdlc;
+ goto err_alloc_hdev;
}
- nfc_shdlc_set_clientdata(info->shdlc, info);
+ nfc_hci_set_clientdata(info->hdev, info);
- return 0;
+ r = nfc_hci_register_device(info->hdev);
+ if (r)
+ goto err_regdev;
-err_allocshdlc:
- free_irq(client->irq, info);
+ *hdev = info->hdev;
+
+ return 0;
-err_rti:
- if (pdata->free_resources != NULL)
- pdata->free_resources();
+err_regdev:
+ nfc_hci_free_device(info->hdev);
-err_pdata:
+err_alloc_hdev:
kfree(info);
err_info_alloc:
return r;
}
-static __devexit int pn544_hci_remove(struct i2c_client *client)
+void pn544_hci_remove(struct nfc_hci_dev *hdev)
{
- struct pn544_hci_info *info = i2c_get_clientdata(client);
- struct pn544_nfc_platform_data *pdata = client->dev.platform_data;
-
- dev_dbg(&client->dev, "%s\n", __func__);
-
- nfc_shdlc_free(info->shdlc);
-
- if (info->state != PN544_ST_COLD) {
- if (pdata->disable)
- pdata->disable();
- }
-
- free_irq(client->irq, info);
- if (pdata->free_resources)
- pdata->free_resources();
+ struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
+ nfc_hci_unregister_device(hdev);
+ nfc_hci_free_device(hdev);
kfree(info);
-
- return 0;
}
-
-static struct i2c_driver pn544_hci_driver = {
- .driver = {
- .name = PN544_HCI_DRIVER_NAME,
- },
- .probe = pn544_hci_probe,
- .id_table = pn544_hci_id_table,
- .remove = __devexit_p(pn544_hci_remove),
-};
-
-static int __init pn544_hci_init(void)
-{
- int r;
-
- pr_debug(DRIVER_DESC ": %s\n", __func__);
-
- r = i2c_add_driver(&pn544_hci_driver);
- if (r) {
- pr_err(PN544_HCI_DRIVER_NAME ": driver registration failed\n");
- return r;
- }
-
- return 0;
-}
-
-static void __exit pn544_hci_exit(void)
-{
- i2c_del_driver(&pn544_hci_driver);
-}
-
-module_init(pn544_hci_init);
-module_exit(pn544_hci_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(DRIVER_DESC);
projects / platform / kernel / kernel-mfld-blackbay.git / blobdiff