NFC: Set the proper baud rate when trying to activate pn533 targets
We get the right baud rate from the last polled modulation.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index c9ba96c..b97e3c8 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1629,6 +1629,20 @@
return 0;
}
+static int pn533_mod_to_baud(struct pn533 *dev)
+{
+ switch (dev->poll_mod_curr) {
+ case PN533_POLL_MOD_106KBPS_A:
+ return 0;
+ case PN533_POLL_MOD_212KBPS_FELICA:
+ return 1;
+ case PN533_POLL_MOD_424KBPS_FELICA:
+ return 2;
+ default:
+ return -EINVAL;
+ }
+}
+
#define PASSIVE_DATA_LEN 5
static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
u8 comm_mode, u8* gb, size_t gb_len)
@@ -1637,7 +1651,7 @@
struct pn533_cmd_jump_dep *cmd;
u8 cmd_len, *data_ptr;
u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
- int rc;
+ int rc, baud;
nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
@@ -1653,6 +1667,13 @@
return -EBUSY;
}
+ baud = pn533_mod_to_baud(dev);
+ if (baud < 0) {
+ nfc_dev_err(&dev->interface->dev,
+ "Invalid curr modulation %d", dev->poll_mod_curr);
+ return baud;
+ }
+
cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len;
if (comm_mode == NFC_COMM_PASSIVE)
cmd_len += PASSIVE_DATA_LEN;
@@ -1665,7 +1686,7 @@
cmd->active = !comm_mode;
cmd->next = 0;
- cmd->baud = 2;
+ cmd->baud = baud;
data_ptr = cmd->data;
if (comm_mode == NFC_COMM_PASSIVE && cmd->baud > 0) {
memcpy(data_ptr, passive_data, PASSIVE_DATA_LEN);