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NFC: pn533: add I2C phy driver

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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>
This commit is contained in:
Michael Thalmeier
2016-03-25 15:46:54 +01:00
committed by Samuel Ortiz
parent 9815c7cf22
commit dd7bedcd26
5 changed files with 317 additions and 0 deletions
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31
drivers/nfc/pn533/pn533.c
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@@ -2427,8 +2427,37 @@ static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf)
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 @@ static int pn533_setup(struct pn533 *dev)
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 @@ static int pn533_setup(struct pn533 *dev)
switch (dev->device_type) {
case PN533_DEVICE_STD:
case PN533_DEVICE_PN532:
break;
case PN533_DEVICE_PASORI: