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NFC: pn533: Turn radio on and off when bringing the device up and down

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Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2013-04-11 11:45:41 +02:00
parent 7757dc8a3e
commit 60d9edd50b
1 changed files with 35 additions and 4 deletions
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39
drivers/nfc/pn533.c
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@ -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,