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authorMark A. Greer <mgreer@animalcreek.com>2014-07-02 21:16:15 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2014-07-21 02:45:21 +0400
commit55537c7e7d76417303c32f84a8dd1a12e02c4409 (patch)
treecdeb92a96a61f8a4ea16443cef70e9a39f7b21f4 /net/nfc/digital_technology.c
parent0529a7adf3421acf251355444a012073abaffebc (diff)
downloadlinux-55537c7e7d76417303c32f84a8dd1a12e02c4409.tar.xz
NFC: digital: Add digital framing calls when in target mode
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>
Diffstat (limited to 'net/nfc/digital_technology.c')
-rw-r--r--net/nfc/digital_technology.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/net/nfc/digital_technology.c b/net/nfc/digital_technology.c
index d1684cbfea68..d276518cc8bf 100644
--- a/net/nfc/digital_technology.c
+++ b/net/nfc/digital_technology.c
@@ -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)