Commit | Line | Data |
---|---|---|
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 | ||
27 | #include <linux/device.h> | |
28 | #include <linux/skbuff.h> | |
29 | ||
30 | #define nfc_dev_info(dev, fmt, arg...) dev_info((dev), "NFC: " fmt "\n", ## arg) | |
31 | #define nfc_dev_err(dev, fmt, arg...) dev_err((dev), "NFC: " fmt "\n", ## arg) | |
32 | #define nfc_dev_dbg(dev, fmt, arg...) dev_dbg((dev), fmt "\n", ## arg) | |
33 | ||
34 | struct nfc_dev; | |
35 | ||
36 | /** | |
37 | * data_exchange_cb_t - Definition of nfc_data_exchange callback | |
38 | * | |
39 | * @context: nfc_data_exchange cb_context parameter | |
40 | * @skb: response data | |
41 | * @err: If an error has occurred during data exchange, it is the | |
42 | * error number. Zero means no error. | |
43 | * | |
44 | * When a rx or tx package is lost or corrupted or the target gets out | |
45 | * of the operating field, err is -EIO. | |
46 | */ | |
47 | typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb, | |
48 | int err); | |
49 | ||
50 | struct nfc_ops { | |
51 | int (*start_poll)(struct nfc_dev *dev, u32 protocols); | |
52 | void (*stop_poll)(struct nfc_dev *dev); | |
53 | int (*activate_target)(struct nfc_dev *dev, u32 target_idx, | |
54 | u32 protocol); | |
55 | void (*deactivate_target)(struct nfc_dev *dev, u32 target_idx); | |
56 | int (*data_exchange)(struct nfc_dev *dev, u32 target_idx, | |
57 | struct sk_buff *skb, data_exchange_cb_t cb, | |
58 | void *cb_context); | |
59 | }; | |
60 | ||
4d12b8b1 LRV |
61 | struct nfc_target { |
62 | u32 idx; | |
63 | u32 supported_protocols; | |
64 | u16 sens_res; | |
65 | u8 sel_res; | |
66 | }; | |
67 | ||
68 | struct nfc_genl_data { | |
69 | u32 poll_req_pid; | |
70 | struct mutex genl_data_mutex; | |
71 | }; | |
72 | ||
3e256b8f LRV |
73 | struct nfc_dev { |
74 | unsigned idx; | |
4d12b8b1 LRV |
75 | unsigned target_idx; |
76 | struct nfc_target *targets; | |
77 | int n_targets; | |
78 | int targets_generation; | |
79 | spinlock_t targets_lock; | |
3e256b8f LRV |
80 | struct device dev; |
81 | bool polling; | |
4d12b8b1 | 82 | struct nfc_genl_data genl_data; |
3e256b8f LRV |
83 | u32 supported_protocols; |
84 | ||
85 | struct nfc_ops *ops; | |
86 | }; | |
87 | #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev) | |
88 | ||
89 | extern struct class nfc_class; | |
90 | ||
91 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
92 | u32 supported_protocols); | |
93 | ||
94 | /** | |
95 | * nfc_free_device - free nfc device | |
96 | * | |
97 | * @dev: The nfc device to free | |
98 | */ | |
99 | static inline void nfc_free_device(struct nfc_dev *dev) | |
100 | { | |
101 | put_device(&dev->dev); | |
102 | } | |
103 | ||
104 | int nfc_register_device(struct nfc_dev *dev); | |
105 | ||
106 | void nfc_unregister_device(struct nfc_dev *dev); | |
107 | ||
108 | /** | |
109 | * nfc_set_parent_dev - set the parent device | |
110 | * | |
111 | * @nfc_dev: The nfc device whose parent is being set | |
112 | * @dev: The parent device | |
113 | */ | |
114 | static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev, | |
115 | struct device *dev) | |
116 | { | |
117 | nfc_dev->dev.parent = dev; | |
118 | } | |
119 | ||
120 | /** | |
121 | * nfc_set_drvdata - set driver specifc data | |
122 | * | |
123 | * @dev: The nfc device | |
124 | * @data: Pointer to driver specifc data | |
125 | */ | |
126 | static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data) | |
127 | { | |
128 | dev_set_drvdata(&dev->dev, data); | |
129 | } | |
130 | ||
131 | /** | |
132 | * nfc_get_drvdata - get driver specifc data | |
133 | * | |
134 | * @dev: The nfc device | |
135 | */ | |
136 | static inline void *nfc_get_drvdata(struct nfc_dev *dev) | |
137 | { | |
138 | return dev_get_drvdata(&dev->dev); | |
139 | } | |
140 | ||
141 | /** | |
142 | * nfc_device_name - get the nfc device name | |
143 | * | |
144 | * @dev: The nfc device whose name to return | |
145 | */ | |
146 | static inline const char *nfc_device_name(struct nfc_dev *dev) | |
147 | { | |
148 | return dev_name(&dev->dev); | |
149 | } | |
150 | ||
151 | struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp); | |
152 | ||
4d12b8b1 LRV |
153 | int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets, |
154 | int ntargets); | |
155 | ||
3e256b8f | 156 | #endif /* __NET_NFC_H */ |