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path: root/drivers/nfc/pn533.c
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Diffstat (limited to 'drivers/nfc/pn533.c')
-rw-r--r--drivers/nfc/pn533.c197
1 files changed, 85 insertions, 112 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index c34acd0dc5ff..e5615f538aaa 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -286,11 +286,6 @@ const struct pn533_poll_modulations poll_mod[] = {
/* PN533_CMD_IN_ATR */
-struct pn533_cmd_activate_param {
- u8 tg;
- u8 next;
-} __packed;
-
struct pn533_cmd_activate_response {
u8 status;
u8 nfcid3t[10];
@@ -944,28 +939,10 @@ unlock:
}
struct pn533_sync_cmd_response {
- int rc;
struct sk_buff *resp;
struct completion done;
};
-static int pn533_sync_cmd_complete(struct pn533 *dev, void *_arg,
- u8 *params, int params_len)
-{
- struct pn533_sync_cmd_response *arg = _arg;
-
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
-
- arg->rc = 0;
-
- if (params_len < 0) /* error */
- arg->rc = params_len;
-
- complete(&arg->done);
-
- return 0;
-}
-
static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
struct sk_buff *resp)
{
@@ -1018,28 +995,6 @@ static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
return arg.resp;
}
-static int pn533_send_cmd_frame_sync(struct pn533 *dev,
- struct pn533_frame *out_frame,
- struct pn533_frame *in_frame,
- int in_frame_len)
-{
- int rc;
- struct pn533_sync_cmd_response arg;
-
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
-
- init_completion(&arg.done);
-
- rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, in_frame_len,
- pn533_sync_cmd_complete, &arg);
- if (rc)
- return rc;
-
- wait_for_completion(&arg.done);
-
- return arg.rc;
-}
-
static void pn533_send_complete(struct urb *urb)
{
struct pn533 *dev = urb->context;
@@ -1801,38 +1756,37 @@ static void pn533_stop_poll(struct nfc_dev *nfc_dev)
static int pn533_activate_target_nfcdep(struct pn533 *dev)
{
- struct pn533_cmd_activate_param param;
- struct pn533_cmd_activate_response *resp;
+ struct pn533_cmd_activate_response *rsp;
u16 gt_len;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ struct sk_buff *skb;
+ struct sk_buff *resp;
- pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_ATR);
+ nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
- param.tg = 1;
- param.next = 0;
- memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &param,
- sizeof(struct pn533_cmd_activate_param));
- dev->out_frame->datalen += sizeof(struct pn533_cmd_activate_param);
+ skb = pn533_alloc_skb(sizeof(u8) * 2); /*TG + Next*/
+ if (!skb)
+ return -ENOMEM;
- pn533_tx_frame_finish(dev->out_frame);
+ *skb_put(skb, sizeof(u8)) = 1; /* TG */
+ *skb_put(skb, sizeof(u8)) = 0; /* Next */
- rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
- PN533_NORMAL_FRAME_MAX_LEN);
- if (rc)
- return rc;
+ resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
- resp = (struct pn533_cmd_activate_response *)
- PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame);
- rc = resp->status & PN533_CMD_RET_MASK;
+ rsp = (struct pn533_cmd_activate_response *) resp->data;
+ rc = rsp->status & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS)
+ dev_kfree_skb(resp);
return -EIO;
/* ATR_RES general bytes are located at offset 16 */
- gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16;
- rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len);
+ gt_len = resp->len - 16;
+ rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
+ dev_kfree_skb(resp);
return rc;
}
@@ -1889,8 +1843,10 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
struct nfc_target *target)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
- u8 tg;
- u8 status;
+
+ struct sk_buff *skb;
+ struct sk_buff *resp;
+
int rc;
nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
@@ -1901,31 +1857,24 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
}
dev->tgt_active_prot = 0;
-
skb_queue_purge(&dev->resp_q);
- pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_RELEASE);
-
- tg = 1;
- memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &tg, sizeof(u8));
- dev->out_frame->datalen += sizeof(u8);
+ skb = pn533_alloc_skb(sizeof(u8));
+ if (!skb)
+ return;
- pn533_tx_frame_finish(dev->out_frame);
+ *skb_put(skb, 1) = 1; /* TG*/
- rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
- PN533_NORMAL_FRAME_MAX_LEN);
- if (rc) {
- nfc_dev_err(&dev->interface->dev, "Error when sending release"
- " command to the controller");
+ resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb);
+ if (IS_ERR(resp))
return;
- }
- status = PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame)[0];
- rc = status & PN533_CMD_RET_MASK;
+ rc = resp->data[0] & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS)
nfc_dev_err(&dev->interface->dev, "Error 0x%x when releasing"
" the target", rc);
+ dev_kfree_skb(resp);
return;
}
@@ -2457,43 +2406,71 @@ error_cmd:
static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
u8 cfgdata_len)
{
- int rc;
- u8 *params;
+ struct sk_buff *skb;
+ struct sk_buff *resp;
+
+ int skb_len;
nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
- pn533_tx_frame_init(dev->out_frame, PN533_CMD_RF_CONFIGURATION);
+ skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
- params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame);
- params[0] = cfgitem;
- memcpy(&params[1], cfgdata, cfgdata_len);
- dev->out_frame->datalen += (1 + cfgdata_len);
+ skb = pn533_alloc_skb(skb_len);
+ if (!skb)
+ return -ENOMEM;
- pn533_tx_frame_finish(dev->out_frame);
+ *skb_put(skb, sizeof(cfgitem)) = cfgitem;
+ memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len);
- rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
- PN533_NORMAL_FRAME_MAX_LEN);
+ resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
- return rc;
+ dev_kfree_skb(resp);
+ return 0;
+}
+
+static int pn533_get_firmware_version(struct pn533 *dev,
+ struct pn533_fw_version *fv)
+{
+ struct sk_buff *skb;
+ struct sk_buff *resp;
+
+ skb = pn533_alloc_skb(0);
+ if (!skb)
+ return -ENOMEM;
+
+ resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
+
+ fv->ic = resp->data[0];
+ fv->ver = resp->data[1];
+ fv->rev = resp->data[2];
+ fv->support = resp->data[3];
+
+ dev_kfree_skb(resp);
+ return 0;
}
static int pn533_fw_reset(struct pn533 *dev)
{
- int rc;
- u8 *params;
+ struct sk_buff *skb;
+ struct sk_buff *resp;
nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
- pn533_tx_frame_init(dev->out_frame, 0x18);
+ skb = pn533_alloc_skb(sizeof(u8));
+ if (!skb)
+ return -ENOMEM;
- params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame);
- params[0] = 0x1;
- dev->out_frame->datalen += 1;
+ *skb_put(skb, sizeof(u8)) = 0x1;
- pn533_tx_frame_finish(dev->out_frame);
+ resp = pn533_send_cmd_sync(dev, 0x18, skb);
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
- rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
- PN533_NORMAL_FRAME_MAX_LEN);
+ dev_kfree_skb(resp);
return 0;
}
@@ -2592,7 +2569,7 @@ static int pn533_setup(struct pn533 *dev)
static int pn533_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
- struct pn533_fw_version *fw_ver;
+ struct pn533_fw_version fw_ver;
struct pn533 *dev;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
@@ -2664,18 +2641,14 @@ static int pn533_probe(struct usb_interface *interface,
usb_set_intfdata(interface, dev);
- pn533_tx_frame_init(dev->out_frame, PN533_CMD_GET_FIRMWARE_VERSION);
- pn533_tx_frame_finish(dev->out_frame);
-
- rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
- PN533_NORMAL_FRAME_MAX_LEN);
- if (rc)
+ memset(&fw_ver, 0, sizeof(fw_ver));
+ rc = pn533_get_firmware_version(dev, &fw_ver);
+ if (rc < 0)
goto destroy_wq;
- fw_ver = (struct pn533_fw_version *)
- PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame);
- nfc_dev_info(&dev->interface->dev, "NXP PN533 firmware ver %d.%d now"
- " attached", fw_ver->ver, fw_ver->rev);
+ nfc_dev_info(&dev->interface->dev,
+ "NXP PN533 firmware ver %d.%d now attached",
+ fw_ver.ver, fw_ver.rev);
dev->device_type = id->driver_info;
switch (dev->device_type) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 12:35:41 +0000