2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
6 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the
20 * Free Software Foundation, Inc.,
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #include <linux/nfc.h>
28 #include <linux/device.h>
29 #include <linux/skbuff.h>
31 #define nfc_dev_info(dev, fmt, arg...) dev_info((dev), "NFC: " fmt "\n", ## arg)
32 #define nfc_dev_err(dev, fmt, arg...) dev_err((dev), "NFC: " fmt "\n", ## arg)
33 #define nfc_dev_dbg(dev, fmt, arg...) dev_dbg((dev), fmt "\n", ## arg)
38 * data_exchange_cb_t - Definition of nfc_data_exchange callback
40 * @context: nfc_data_exchange cb_context parameter
42 * @err: If an error has occurred during data exchange, it is the
43 * error number. Zero means no error.
45 * When a rx or tx package is lost or corrupted or the target gets out
46 * of the operating field, err is -EIO.
48 typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
52 int (*dev_up)(struct nfc_dev *dev);
53 int (*dev_down)(struct nfc_dev *dev);
54 int (*start_poll)(struct nfc_dev *dev, u32 protocols);
55 void (*stop_poll)(struct nfc_dev *dev);
56 int (*dep_link_up)(struct nfc_dev *dev, int target_idx, u8 comm_mode,
57 u8 *gb, size_t gb_len);
58 int (*dep_link_down)(struct nfc_dev *dev);
59 int (*activate_target)(struct nfc_dev *dev, u32 target_idx,
61 void (*deactivate_target)(struct nfc_dev *dev, u32 target_idx);
62 int (*data_exchange)(struct nfc_dev *dev, u32 target_idx,
63 struct sk_buff *skb, data_exchange_cb_t cb,
65 int (*check_presence)(struct nfc_dev *dev, u32 target_idx);
68 #define NFC_TARGET_IDX_ANY -1
69 #define NFC_MAX_GT_LEN 48
70 #define NFC_TARGET_IDX_NONE 0xffffffff
74 u32 supported_protocols;
78 u8 nfcid1[NFC_NFCID1_MAXSIZE];
80 u8 sensb_res[NFC_SENSB_RES_MAXSIZE];
82 u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
87 struct nfc_genl_data {
89 struct mutex genl_data_mutex;
95 struct nfc_target *targets;
97 int targets_generation;
98 spinlock_t targets_lock;
102 u32 activated_target_idx;
105 struct nfc_genl_data genl_data;
106 u32 supported_protocols;
111 struct timer_list check_pres_timer;
112 struct workqueue_struct *check_pres_wq;
113 struct work_struct check_pres_work;
117 #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
119 extern struct class nfc_class;
121 struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
122 u32 supported_protocols,
127 * nfc_free_device - free nfc device
129 * @dev: The nfc device to free
131 static inline void nfc_free_device(struct nfc_dev *dev)
133 put_device(&dev->dev);
136 int nfc_register_device(struct nfc_dev *dev);
138 void nfc_unregister_device(struct nfc_dev *dev);
141 * nfc_set_parent_dev - set the parent device
143 * @nfc_dev: The nfc device whose parent is being set
144 * @dev: The parent device
146 static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev,
149 nfc_dev->dev.parent = dev;
153 * nfc_set_drvdata - set driver specifc data
155 * @dev: The nfc device
156 * @data: Pointer to driver specifc data
158 static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data)
160 dev_set_drvdata(&dev->dev, data);
164 * nfc_get_drvdata - get driver specifc data
166 * @dev: The nfc device
168 static inline void *nfc_get_drvdata(struct nfc_dev *dev)
170 return dev_get_drvdata(&dev->dev);
174 * nfc_device_name - get the nfc device name
176 * @dev: The nfc device whose name to return
178 static inline const char *nfc_device_name(struct nfc_dev *dev)
180 return dev_name(&dev->dev);
183 struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
184 unsigned int flags, unsigned int size,
186 struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp);
188 int nfc_set_remote_general_bytes(struct nfc_dev *dev,
191 int nfc_targets_found(struct nfc_dev *dev,
192 struct nfc_target *targets, int ntargets);
193 int nfc_target_lost(struct nfc_dev *dev, u32 target_idx);
195 int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
196 u8 comm_mode, u8 rf_mode);
198 #endif /* __NET_NFC_H */