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NFC: digital: Add digital framing calls when in target mode

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Add new "NFC_DIGITAL_FRAMING_*" calls to the digital
layer so the driver can make the necessary adjustments
when performing anticollision while in target mode.

The driver must ensure that the effect of these calls
happens after the following response has been sent but
before reception of the next request begins.

Acked-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark A. Greer 2014-07-02 10:16:15 -07:00 committed by Samuel Ortiz
parent 0529a7adf3
commit 55537c7e7d
2 changed files with 23 additions and 0 deletions
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2
include/net/nfc/digital.h
View File

@ -49,6 +49,7 @@ enum {
NFC_DIGITAL_FRAMING_NFCA_SHORT = 0,
NFC_DIGITAL_FRAMING_NFCA_STANDARD,
NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A,
NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE,
NFC_DIGITAL_FRAMING_NFCA_T1T,
NFC_DIGITAL_FRAMING_NFCA_T2T,
@ -66,6 +67,7 @@ enum {
NFC_DIGITAL_FRAMING_NFCB,
NFC_DIGITAL_FRAMING_NFCB_T4T,
NFC_DIGITAL_FRAMING_LAST,
};

21
net/nfc/digital_technology.c
View File

@ -944,6 +944,13 @@ static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev)
if (!DIGITAL_DRV_CAPS_TG_CRC(ddev))
digital_skb_add_crc_a(skb);
rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING,
NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE);
if (rc) {
kfree_skb(skb);
return rc;
}
rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_atr_req,
NULL);
if (rc)
@ -1002,6 +1009,13 @@ static int digital_tg_send_sdd_res(struct nfc_digital_dev *ddev)
for (i = 0; i < 4; i++)
sdd_res->bcc ^= sdd_res->nfcid1[i];
rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING,
NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A);
if (rc) {
kfree_skb(skb);
return rc;
}
rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sel_req,
NULL);
if (rc)
@ -1054,6 +1068,13 @@ static int digital_tg_send_sens_res(struct nfc_digital_dev *ddev)
sens_res[0] = (DIGITAL_SENS_RES_NFC_DEP >> 8) & 0xFF;
sens_res[1] = DIGITAL_SENS_RES_NFC_DEP & 0xFF;
rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING,
NFC_DIGITAL_FRAMING_NFCA_STANDARD);
if (rc) {
kfree_skb(skb);
return rc;
}
rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sdd_req,
NULL);
if (rc)