diff options
Diffstat (limited to 'drivers/nfc/pn533.c')
| -rw-r--r-- | drivers/nfc/pn533.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c index 3569b9e621ea..8f6f2baa930d 100644 --- a/drivers/nfc/pn533.c +++ b/drivers/nfc/pn533.c @@ -163,9 +163,13 @@ struct pn533_fw_version { }; /* PN533_CMD_RF_CONFIGURATION */ -#define PN533_CFGITEM_TIMING 0x02 +#define PN533_CFGITEM_RF_FIELD 0x01 +#define PN533_CFGITEM_TIMING 0x02 #define PN533_CFGITEM_MAX_RETRIES 0x05 -#define PN533_CFGITEM_PASORI 0x82 +#define PN533_CFGITEM_PASORI 0x82 + +#define PN533_CFGITEM_RF_FIELD_ON 0x1 +#define PN533_CFGITEM_RF_FIELD_OFF 0x0 #define PN533_CONFIG_TIMING_102 0xb #define PN533_CONFIG_TIMING_204 0xc @@ -2540,9 +2544,36 @@ static int pn533_acr122_poweron_rdr(struct pn533 *dev) return arg.rc; } +static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf) +{ + struct pn533 *dev = nfc_get_drvdata(nfc_dev); + u8 rf_field = !!rf; + int rc; + + rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD, + (u8 *)&rf_field, 1); + if (rc) { + nfc_dev_err(&dev->interface->dev, + "Error on setting RF field"); + return rc; + } + + return rc; +} + +int pn533_dev_up(struct nfc_dev *nfc_dev) +{ + return pn533_rf_field(nfc_dev, 1); +} + +int pn533_dev_down(struct nfc_dev *nfc_dev) +{ + return pn533_rf_field(nfc_dev, 0); +} + static struct nfc_ops pn533_nfc_ops = { - .dev_up = NULL, - .dev_down = NULL, + .dev_up = pn533_dev_up, + .dev_down = pn533_dev_down, .dep_link_up = pn533_dep_link_up, .dep_link_down = pn533_dep_link_down, .start_poll = pn533_start_poll, |