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authorDavid S. Miller <davem@davemloft.net>2014-08-05 13:18:20 -0700
committerDavid S. Miller <davem@davemloft.net>2014-08-05 13:18:20 -0700
commitaef4f5b6db654e512ebcccab2a6e50424c05d2f9 (patch)
tree4daaee5ac85d1128233a45908dac5212f38ec7aa /drivers/nfc/st21nfcb/st21nfcb.c
parent61ab9efddf51cbc0d57356a4d650785cf5721fbe (diff)
parentdc6be9f54a4ecb0a09765d1f515ed947d86b7528 (diff)
downloadtalos-obmc-linux-aef4f5b6db654e512ebcccab2a6e50424c05d2f9.tar.gz
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Merge tag 'master-2014-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
Conflicts: net/6lowpan/iphc.c Minor conflicts in iphc.c were changes overlapping with some style cleanups. John W. Linville says: ==================== Please pull this last(?) batch of wireless change intended for the 3.17 stream... For the NFC bits, Samuel says: "This is a rather quiet one, we have: - A new driver from ST Microelectronics for their NCI ST21NFCB, including device tree support. - p2p support for the ST21NFCA driver - A few fixes an enhancements for the NFC digital laye" For the Atheros bits, Kalle says: "Michal and Janusz did some important RX aggregation fixes, basically we were missing RX reordering altogether. The 10.1 firmware doesn't support Ad-Hoc mode and Michal fixed ath10k so that it doesn't advertise Ad-Hoc support with that firmware. Also he implemented a workaround for a KVM issue." For the Bluetooth bits, Gustavo and Johan say: "To quote Gustavo from his previous request: 'Some last minute fixes for -next. We have a fix for a use after free in RFCOMM, another fix to an issue with ADV_DIRECT_IND and one for ADV_IND with auto-connection handling. Last, we added support for reading the codec and MWS setting for controllers that support these features.' Additionally there are fixes to LE scanning, an update to conform to the 4.1 core specification as well as fixes for tracking the page scan state. All of these fixes are important for 3.17." And, "We've got: - 6lowpan fixes/cleanups - A couple crash fixes, one for the Marvell HCI driver and another in LE SMP. - Fix for an incorrect connected state check - Fix for the bondable requirement during pairing (an issue which had crept in because of using "pairable" when in fact the actual meaning was "bondable" (these have different meanings in Bluetooth)" Along with those are some late-breaking hardware support patches in brcmfmac and b43 as well as a stray ath9k patch. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/nfc/st21nfcb/st21nfcb.c')
-rw-r--r--drivers/nfc/st21nfcb/st21nfcb.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/nfc/st21nfcb/st21nfcb.c b/drivers/nfc/st21nfcb/st21nfcb.c
new file mode 100644
index 000000000000..4d95863e3063
--- /dev/null
+++ b/drivers/nfc/st21nfcb/st21nfcb.c
@@ -0,0 +1,129 @@
+/*
+ * NCI based Driver for STMicroelectronics NFC Chip
+ *
+ * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+
+#include "st21nfcb.h"
+#include "ndlc.h"
+
+#define DRIVER_DESC "NCI NFC driver for ST21NFCB"
+
+static int st21nfcb_nci_open(struct nci_dev *ndev)
+{
+ struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
+ int r;
+
+ if (test_and_set_bit(ST21NFCB_NCI_RUNNING, &info->flags))
+ return 0;
+
+ r = ndlc_open(info->ndlc);
+ if (r)
+ clear_bit(ST21NFCB_NCI_RUNNING, &info->flags);
+
+ return r;
+}
+
+static int st21nfcb_nci_close(struct nci_dev *ndev)
+{
+ struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
+
+ if (!test_and_clear_bit(ST21NFCB_NCI_RUNNING, &info->flags))
+ return 0;
+
+ ndlc_close(info->ndlc);
+
+ return 0;
+}
+
+static int st21nfcb_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
+
+ skb->dev = (void *)ndev;
+
+ if (!test_bit(ST21NFCB_NCI_RUNNING, &info->flags))
+ return -EBUSY;
+
+ return ndlc_send(info->ndlc, skb);
+}
+
+static struct nci_ops st21nfcb_nci_ops = {
+ .open = st21nfcb_nci_open,
+ .close = st21nfcb_nci_close,
+ .send = st21nfcb_nci_send,
+};
+
+int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
+ int phy_tailroom)
+{
+ struct st21nfcb_nci_info *info;
+ int r;
+ u32 protocols;
+
+ info = devm_kzalloc(ndlc->dev,
+ sizeof(struct st21nfcb_nci_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ protocols = NFC_PROTO_JEWEL_MASK
+ | NFC_PROTO_MIFARE_MASK
+ | NFC_PROTO_FELICA_MASK
+ | NFC_PROTO_ISO14443_MASK
+ | NFC_PROTO_ISO14443_B_MASK
+ | NFC_PROTO_NFC_DEP_MASK;
+
+ ndlc->ndev = nci_allocate_device(&st21nfcb_nci_ops, protocols,
+ phy_headroom, phy_tailroom);
+ if (!ndlc->ndev) {
+ pr_err("Cannot allocate nfc ndev\n");
+ r = -ENOMEM;
+ goto err_alloc_ndev;
+ }
+ info->ndlc = ndlc;
+
+ nci_set_drvdata(ndlc->ndev, info);
+
+ r = nci_register_device(ndlc->ndev);
+ if (r)
+ goto err_regdev;
+
+ return r;
+err_regdev:
+ nci_free_device(ndlc->ndev);
+
+err_alloc_ndev:
+ kfree(info);
+ return r;
+}
+EXPORT_SYMBOL_GPL(st21nfcb_nci_probe);
+
+void st21nfcb_nci_remove(struct nci_dev *ndev)
+{
+ struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
+
+ nci_unregister_device(ndev);
+ nci_free_device(ndev);
+ kfree(info);
+}
+EXPORT_SYMBOL_GPL(st21nfcb_nci_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);
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