From: Julien Lefrique <lefrique@marvell.com>
Date: Tue, 21 Oct 2014 14:52:47 +0000 (+0200)
Subject: NFC: NCI: Configure ATR_RES general bytes
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=529ee06682a5691eec25991c506357caf7341c93;p=linux-beck.git

NFC: NCI: Configure ATR_RES general bytes

The Target responds to the ATR_REQ with the ATR_RES. Configure the General
Bytes in ATR_RES with the first three octets equal to the NFC Forum LLCP
magic number, followed by some LLC Parameters TLVs described in section
4.5 of [LLCP].

Signed-off-by: Julien Lefrique <lefrique@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---

diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
index fffadc706e06..e7257a4653b4 100644
--- a/include/net/nfc/nci.h
+++ b/include/net/nfc/nci.h
@@ -110,6 +110,7 @@
 
 /* NCI Configuration Parameter Tags */
 #define NCI_PN_ATR_REQ_GEN_BYTES				0x29
+#define NCI_LN_ATR_RES_GEN_BYTES				0x61
 #define NCI_LA_SEL_INFO						0x32
 #define NCI_LF_PROTOCOL_TYPE					0x50
 #define NCI_LF_CON_BITR_F					0x54
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 61f92678a64c..8f8bfdf145cb 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -460,6 +460,7 @@ static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
 {
 	struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
 	struct nci_set_config_param param;
+	int rc;
 
 	param.val = nfc_get_local_general_bytes(nfc_dev, &param.len);
 	if ((param.val == NULL) || (param.len == 0))
@@ -470,6 +471,13 @@ static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
 
 	param.id = NCI_PN_ATR_REQ_GEN_BYTES;
 
+	rc = nci_request(ndev, nci_set_config_req, (unsigned long)&param,
+			 msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
+	if (rc)
+		return rc;
+
+	param.id = NCI_LN_ATR_RES_GEN_BYTES;
+
 	return nci_request(ndev, nci_set_config_req, (unsigned long)&param,
 			   msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
 }
@@ -525,7 +533,7 @@ static int nci_start_poll(struct nfc_dev *nfc_dev,
 			return -EBUSY;
 	}
 
-	if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
+	if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
 		rc = nci_set_local_general_bytes(nfc_dev);
 		if (rc) {
 			pr_err("failed to set local general bytes\n");