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Commit 3a8eab39 authored by Samuel Ortiz's avatar Samuel Ortiz
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NFC: pn533: Enable AUTO RFCA 



The AUTO RFCA bit forbids the pn533 chipset to turn its radio on
whenever an external field is present.
Without this bit set, some devices seems to get over flood by the
pn533 rf field and thus become hardly detectable.

Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 5eef4845

drivers/nfc/pn533.c

+6 −3
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ struct pn533_fw_version { 
#define PN533_CFGITEM_MAX_RETRIES 0x05

#define PN533_CFGITEM_PASORI      0x82



#define PN533_CFGITEM_RF_FIELD_AUTO_RFCA 0x2

#define PN533_CFGITEM_RF_FIELD_ON        0x1

#define PN533_CFGITEM_RF_FIELD_OFF       0x0
@@ -1696,7 +1697,7 @@ static void pn533_wq_rf(struct work_struct *work) 
		return;



	*skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD;

	*skb_put(skb, 1) = 0;

	*skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA;



	rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb,

				  pn533_rf_complete, NULL);
@@ -2598,6 +2599,8 @@ static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf) 
	u8 rf_field = !!rf;

	int rc;



	rf_field |= PN533_CFGITEM_RF_FIELD_AUTO_RFCA;



	rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD,

				     (u8 *)&rf_field, 1);

	if (rc) {