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3e256b8f LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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. | |
22 | */ | |
23 | ||
24 | #ifndef __NET_NFC_H | |
25 | #define __NET_NFC_H | |
26 | ||
d5a2ca60 | 27 | #include <linux/nfc.h> |
3e256b8f LRV |
28 | #include <linux/device.h> |
29 | #include <linux/skbuff.h> | |
30 | ||
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) | |
34 | ||
35 | struct nfc_dev; | |
36 | ||
37 | /** | |
38 | * data_exchange_cb_t - Definition of nfc_data_exchange callback | |
39 | * | |
40 | * @context: nfc_data_exchange cb_context parameter | |
41 | * @skb: response data | |
42 | * @err: If an error has occurred during data exchange, it is the | |
43 | * error number. Zero means no error. | |
44 | * | |
45 | * When a rx or tx package is lost or corrupted or the target gets out | |
46 | * of the operating field, err is -EIO. | |
47 | */ | |
48 | typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb, | |
49 | int err); | |
50 | ||
51 | struct nfc_ops { | |
8b3fe7b5 IE |
52 | int (*dev_up)(struct nfc_dev *dev); |
53 | int (*dev_down)(struct nfc_dev *dev); | |
3e256b8f LRV |
54 | int (*start_poll)(struct nfc_dev *dev, u32 protocols); |
55 | void (*stop_poll)(struct nfc_dev *dev); | |
47807d3d SO |
56 | int (*dep_link_up)(struct nfc_dev *dev, int target_idx, u8 comm_mode, |
57 | u8 *gb, size_t gb_len); | |
1ed28f61 | 58 | int (*dep_link_down)(struct nfc_dev *dev); |
3e256b8f | 59 | int (*activate_target)(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 60 | u32 protocol); |
3e256b8f LRV |
61 | void (*deactivate_target)(struct nfc_dev *dev, u32 target_idx); |
62 | int (*data_exchange)(struct nfc_dev *dev, u32 target_idx, | |
0a40acb2 SO |
63 | struct sk_buff *skb, data_exchange_cb_t cb, |
64 | void *cb_context); | |
3e256b8f LRV |
65 | }; |
66 | ||
1ed28f61 SO |
67 | #define NFC_TARGET_IDX_ANY -1 |
68 | #define NFC_MAX_GT_LEN 48 | |
69 | ||
4d12b8b1 LRV |
70 | struct nfc_target { |
71 | u32 idx; | |
72 | u32 supported_protocols; | |
73 | u16 sens_res; | |
74 | u8 sel_res; | |
288e0713 | 75 | u8 nfcid1_len; |
d5a2ca60 IE |
76 | u8 nfcid1[NFC_NFCID1_MAXSIZE]; |
77 | u8 sensb_res_len; | |
78 | u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; | |
79 | u8 sensf_res_len; | |
80 | u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; | |
4d12b8b1 LRV |
81 | }; |
82 | ||
83 | struct nfc_genl_data { | |
84 | u32 poll_req_pid; | |
85 | struct mutex genl_data_mutex; | |
86 | }; | |
87 | ||
3e256b8f LRV |
88 | struct nfc_dev { |
89 | unsigned idx; | |
4d12b8b1 LRV |
90 | struct nfc_target *targets; |
91 | int n_targets; | |
92 | int targets_generation; | |
93 | spinlock_t targets_lock; | |
3e256b8f | 94 | struct device dev; |
8b3fe7b5 | 95 | bool dev_up; |
3e256b8f | 96 | bool polling; |
8b3fe7b5 | 97 | bool remote_activated; |
1ed28f61 SO |
98 | bool dep_link_up; |
99 | u32 dep_rf_mode; | |
4d12b8b1 | 100 | struct nfc_genl_data genl_data; |
3e256b8f LRV |
101 | u32 supported_protocols; |
102 | ||
e8753043 SO |
103 | int tx_headroom; |
104 | int tx_tailroom; | |
105 | ||
3e256b8f LRV |
106 | struct nfc_ops *ops; |
107 | }; | |
108 | #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev) | |
109 | ||
110 | extern struct class nfc_class; | |
111 | ||
112 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
0a40acb2 SO |
113 | u32 supported_protocols, |
114 | int tx_headroom, | |
115 | int tx_tailroom); | |
3e256b8f LRV |
116 | |
117 | /** | |
118 | * nfc_free_device - free nfc device | |
119 | * | |
120 | * @dev: The nfc device to free | |
121 | */ | |
122 | static inline void nfc_free_device(struct nfc_dev *dev) | |
123 | { | |
124 | put_device(&dev->dev); | |
125 | } | |
126 | ||
127 | int nfc_register_device(struct nfc_dev *dev); | |
128 | ||
129 | void nfc_unregister_device(struct nfc_dev *dev); | |
130 | ||
131 | /** | |
132 | * nfc_set_parent_dev - set the parent device | |
133 | * | |
134 | * @nfc_dev: The nfc device whose parent is being set | |
135 | * @dev: The parent device | |
136 | */ | |
137 | static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev, | |
0a40acb2 | 138 | struct device *dev) |
3e256b8f LRV |
139 | { |
140 | nfc_dev->dev.parent = dev; | |
141 | } | |
142 | ||
143 | /** | |
144 | * nfc_set_drvdata - set driver specifc data | |
145 | * | |
146 | * @dev: The nfc device | |
147 | * @data: Pointer to driver specifc data | |
148 | */ | |
149 | static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data) | |
150 | { | |
151 | dev_set_drvdata(&dev->dev, data); | |
152 | } | |
153 | ||
154 | /** | |
155 | * nfc_get_drvdata - get driver specifc data | |
156 | * | |
157 | * @dev: The nfc device | |
158 | */ | |
159 | static inline void *nfc_get_drvdata(struct nfc_dev *dev) | |
160 | { | |
161 | return dev_get_drvdata(&dev->dev); | |
162 | } | |
163 | ||
164 | /** | |
165 | * nfc_device_name - get the nfc device name | |
166 | * | |
167 | * @dev: The nfc device whose name to return | |
168 | */ | |
169 | static inline const char *nfc_device_name(struct nfc_dev *dev) | |
170 | { | |
171 | return dev_name(&dev->dev); | |
172 | } | |
173 | ||
7c7cd3bf | 174 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
0a40acb2 SO |
175 | unsigned int flags, unsigned int size, |
176 | unsigned int *err); | |
7c7cd3bf | 177 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp); |
3e256b8f | 178 | |
541d920b | 179 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, |
0a40acb2 | 180 | u8 *gt, u8 gt_len); |
541d920b | 181 | |
0a40acb2 SO |
182 | int nfc_targets_found(struct nfc_dev *dev, |
183 | struct nfc_target *targets, int ntargets); | |
4d12b8b1 | 184 | |
1ed28f61 SO |
185 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, |
186 | u8 comm_mode, u8 rf_mode); | |
187 | ||
3e256b8f | 188 | #endif /* __NET_NFC_H */ |