NFC: pn533: add I2C phy driver
This adds the I2C phy interface for the pn533 driver.
This way the driver can be used to interact with I2C
connected pn532 devices.
Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index 52d83fe..ee9e8f1 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -2427,8 +2427,37 @@
return rc;
}
+static int pn532_sam_configuration(struct nfc_dev *nfc_dev)
+{
+ struct pn533 *dev = nfc_get_drvdata(nfc_dev);
+ struct sk_buff *skb;
+ struct sk_buff *resp;
+
+ skb = pn533_alloc_skb(dev, 1);
+ if (!skb)
+ return -ENOMEM;
+
+ *skb_put(skb, 1) = 0x01;
+
+ resp = pn533_send_cmd_sync(dev, PN533_CMD_SAM_CONFIGURATION, skb);
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
+
+ dev_kfree_skb(resp);
+ return 0;
+}
+
static int pn533_dev_up(struct nfc_dev *nfc_dev)
{
+ struct pn533 *dev = nfc_get_drvdata(nfc_dev);
+
+ if (dev->device_type == PN533_DEVICE_PN532) {
+ int rc = pn532_sam_configuration(nfc_dev);
+
+ if (rc)
+ return rc;
+ }
+
return pn533_rf_field(nfc_dev, 1);
}
@@ -2461,6 +2490,7 @@
case PN533_DEVICE_STD:
case PN533_DEVICE_PASORI:
case PN533_DEVICE_ACR122U:
+ case PN533_DEVICE_PN532:
max_retries.mx_rty_atr = 0x2;
max_retries.mx_rty_psl = 0x1;
max_retries.mx_rty_passive_act =
@@ -2496,6 +2526,7 @@
switch (dev->device_type) {
case PN533_DEVICE_STD:
+ case PN533_DEVICE_PN532:
break;
case PN533_DEVICE_PASORI: