123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220 |
- /*
- * NCI based driver for Samsung S3FWRN5 NFC chip
- *
- * Copyright (C) 2015 Samsung Electrnoics
- * Robert Baldyga <r.baldyga@samsung.com>
- *
- * 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 or later, 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 <net/nfc/nci_core.h>
- #include "s3fwrn5.h"
- #include "firmware.h"
- #include "nci.h"
- #define S3FWRN5_NFC_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
- NFC_PROTO_MIFARE_MASK | \
- NFC_PROTO_FELICA_MASK | \
- NFC_PROTO_ISO14443_MASK | \
- NFC_PROTO_ISO14443_B_MASK | \
- NFC_PROTO_ISO15693_MASK)
- static int s3fwrn5_firmware_update(struct s3fwrn5_info *info)
- {
- bool need_update;
- int ret;
- s3fwrn5_fw_init(&info->fw_info, "sec_s3fwrn5_firmware.bin");
- /* Update firmware */
- s3fwrn5_set_wake(info, false);
- s3fwrn5_set_mode(info, S3FWRN5_MODE_FW);
- ret = s3fwrn5_fw_setup(&info->fw_info);
- if (ret < 0)
- return ret;
- need_update = s3fwrn5_fw_check_version(&info->fw_info,
- info->ndev->manufact_specific_info);
- if (!need_update)
- goto out;
- dev_info(&info->ndev->nfc_dev->dev, "Detected new firmware version\n");
- ret = s3fwrn5_fw_download(&info->fw_info);
- if (ret < 0)
- goto out;
- /* Update RF configuration */
- s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
- s3fwrn5_set_wake(info, true);
- ret = s3fwrn5_nci_rf_configure(info, "sec_s3fwrn5_rfreg.bin");
- s3fwrn5_set_wake(info, false);
- out:
- s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
- s3fwrn5_fw_cleanup(&info->fw_info);
- return ret;
- }
- static int s3fwrn5_nci_open(struct nci_dev *ndev)
- {
- struct s3fwrn5_info *info = nci_get_drvdata(ndev);
- if (s3fwrn5_get_mode(info) != S3FWRN5_MODE_COLD)
- return -EBUSY;
- s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
- s3fwrn5_set_wake(info, true);
- return 0;
- }
- static int s3fwrn5_nci_close(struct nci_dev *ndev)
- {
- struct s3fwrn5_info *info = nci_get_drvdata(ndev);
- s3fwrn5_set_wake(info, false);
- s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
- return 0;
- }
- static int s3fwrn5_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
- {
- struct s3fwrn5_info *info = nci_get_drvdata(ndev);
- int ret;
- mutex_lock(&info->mutex);
- if (s3fwrn5_get_mode(info) != S3FWRN5_MODE_NCI) {
- mutex_unlock(&info->mutex);
- return -EINVAL;
- }
- ret = s3fwrn5_write(info, skb);
- if (ret < 0)
- kfree_skb(skb);
- mutex_unlock(&info->mutex);
- return ret;
- }
- static int s3fwrn5_nci_post_setup(struct nci_dev *ndev)
- {
- struct s3fwrn5_info *info = nci_get_drvdata(ndev);
- int ret;
- ret = s3fwrn5_firmware_update(info);
- if (ret < 0)
- goto out;
- /* NCI core reset */
- s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
- s3fwrn5_set_wake(info, true);
- ret = nci_core_reset(info->ndev);
- if (ret < 0)
- goto out;
- ret = nci_core_init(info->ndev);
- out:
- return ret;
- }
- static struct nci_ops s3fwrn5_nci_ops = {
- .open = s3fwrn5_nci_open,
- .close = s3fwrn5_nci_close,
- .send = s3fwrn5_nci_send,
- .post_setup = s3fwrn5_nci_post_setup,
- };
- int s3fwrn5_probe(struct nci_dev **ndev, void *phy_id, struct device *pdev,
- const struct s3fwrn5_phy_ops *phy_ops, unsigned int max_payload)
- {
- struct s3fwrn5_info *info;
- int ret;
- info = devm_kzalloc(pdev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
- info->phy_id = phy_id;
- info->pdev = pdev;
- info->phy_ops = phy_ops;
- info->max_payload = max_payload;
- mutex_init(&info->mutex);
- s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
- s3fwrn5_nci_get_prop_ops(&s3fwrn5_nci_ops.prop_ops,
- &s3fwrn5_nci_ops.n_prop_ops);
- info->ndev = nci_allocate_device(&s3fwrn5_nci_ops,
- S3FWRN5_NFC_PROTOCOLS, 0, 0);
- if (!info->ndev)
- return -ENOMEM;
- nci_set_parent_dev(info->ndev, pdev);
- nci_set_drvdata(info->ndev, info);
- ret = nci_register_device(info->ndev);
- if (ret < 0) {
- nci_free_device(info->ndev);
- return ret;
- }
- info->fw_info.ndev = info->ndev;
- *ndev = info->ndev;
- return ret;
- }
- EXPORT_SYMBOL(s3fwrn5_probe);
- void s3fwrn5_remove(struct nci_dev *ndev)
- {
- struct s3fwrn5_info *info = nci_get_drvdata(ndev);
- s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
- nci_unregister_device(ndev);
- nci_free_device(ndev);
- }
- EXPORT_SYMBOL(s3fwrn5_remove);
- int s3fwrn5_recv_frame(struct nci_dev *ndev, struct sk_buff *skb,
- enum s3fwrn5_mode mode)
- {
- switch (mode) {
- case S3FWRN5_MODE_NCI:
- return nci_recv_frame(ndev, skb);
- case S3FWRN5_MODE_FW:
- return s3fwrn5_fw_recv_frame(ndev, skb);
- default:
- kfree_skb(skb);
- return -ENODEV;
- }
- }
- EXPORT_SYMBOL(s3fwrn5_recv_frame);
- MODULE_LICENSE("GPL");
- MODULE_DESCRIPTION("Samsung S3FWRN5 NFC driver");
- MODULE_AUTHOR("Robert Baldyga <r.baldyga@samsung.com>");
|