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1 | #ifndef __HID_WIIMOTE_H |
2 | #define __HID_WIIMOTE_H |
3 | |
4 | /* |
5 | * HID driver for Nintendo Wiimote devices |
6 | * Copyright (c) 2011 David Herrmann |
7 | */ |
8 | |
9 | /* |
10 | * This program is free software; you can redistribute it and/or modify it |
11 | * under the terms of the GNU General Public License as published by the Free |
12 | * Software Foundation; either version 2 of the License, or (at your option) |
13 | * any later version. |
14 | */ |
15 | |
16 | #include <linux/completion.h> |
17 | #include <linux/device.h> |
18 | #include <linux/hid.h> |
19 | #include <linux/input.h> |
20 | #include <linux/leds.h> |
21 | #include <linux/module.h> |
22 | #include <linux/mutex.h> |
23 | #include <linux/power_supply.h> |
24 | #include <linux/spinlock.h> |
25 | |
26 | #define WIIMOTE_NAME "Nintendo Wii Remote" |
27 | #define WIIMOTE_BUFSIZE 32 |
28 | |
29 | #define WIIPROTO_FLAG_LED1 0x01 |
30 | #define WIIPROTO_FLAG_LED2 0x02 |
31 | #define WIIPROTO_FLAG_LED3 0x04 |
32 | #define WIIPROTO_FLAG_LED4 0x08 |
33 | #define WIIPROTO_FLAG_RUMBLE 0x10 |
34 | #define WIIPROTO_FLAG_ACCEL 0x20 |
35 | #define WIIPROTO_FLAG_IR_BASIC 0x40 |
36 | #define WIIPROTO_FLAG_IR_EXT 0x80 |
37 | #define WIIPROTO_FLAG_IR_FULL 0xc0 /* IR_BASIC | IR_EXT */ |
38 | #define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \ |
39 | WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4) |
40 | #define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \ |
41 | WIIPROTO_FLAG_IR_FULL) |
42 | |
43 | /* return flag for led \num */ |
44 | #define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1)) |
45 | |
46 | struct wiimote_buf { |
47 | __u8 data[HID_MAX_BUFFER_SIZE]; |
48 | size_t size; |
49 | }; |
50 | |
51 | struct wiimote_state { |
52 | spinlock_t lock; |
53 | __u8 flags; |
54 | __u8 accel_split[2]; |
55 | __u8 drm; |
56 | |
57 | /* synchronous cmd requests */ |
58 | struct mutex sync; |
59 | struct completion ready; |
60 | int cmd; |
61 | __u32 opt; |
62 | |
63 | /* results of synchronous requests */ |
64 | __u8 cmd_battery; |
65 | __u8 cmd_err; |
66 | __u8 *cmd_read_buf; |
67 | __u8 cmd_read_size; |
68 | }; |
69 | |
70 | struct wiimote_data { |
71 | struct hid_device *hdev; |
72 | struct input_dev *input; |
73 | struct led_classdev *leds[4]; |
74 | struct input_dev *accel; |
75 | struct input_dev *ir; |
76 | struct power_supply battery; |
77 | struct wiimote_ext *ext; |
78 | struct wiimote_debug *debug; |
79 | |
80 | spinlock_t qlock; |
81 | __u8 head; |
82 | __u8 tail; |
83 | struct wiimote_buf outq[WIIMOTE_BUFSIZE]; |
84 | struct work_struct worker; |
85 | |
86 | struct wiimote_state state; |
87 | }; |
88 | |
89 | enum wiiproto_reqs { |
90 | WIIPROTO_REQ_NULL = 0x0, |
91 | WIIPROTO_REQ_RUMBLE = 0x10, |
92 | WIIPROTO_REQ_LED = 0x11, |
93 | WIIPROTO_REQ_DRM = 0x12, |
94 | WIIPROTO_REQ_IR1 = 0x13, |
95 | WIIPROTO_REQ_SREQ = 0x15, |
96 | WIIPROTO_REQ_WMEM = 0x16, |
97 | WIIPROTO_REQ_RMEM = 0x17, |
98 | WIIPROTO_REQ_IR2 = 0x1a, |
99 | WIIPROTO_REQ_STATUS = 0x20, |
100 | WIIPROTO_REQ_DATA = 0x21, |
101 | WIIPROTO_REQ_RETURN = 0x22, |
102 | WIIPROTO_REQ_DRM_K = 0x30, |
103 | WIIPROTO_REQ_DRM_KA = 0x31, |
104 | WIIPROTO_REQ_DRM_KE = 0x32, |
105 | WIIPROTO_REQ_DRM_KAI = 0x33, |
106 | WIIPROTO_REQ_DRM_KEE = 0x34, |
107 | WIIPROTO_REQ_DRM_KAE = 0x35, |
108 | WIIPROTO_REQ_DRM_KIE = 0x36, |
109 | WIIPROTO_REQ_DRM_KAIE = 0x37, |
110 | WIIPROTO_REQ_DRM_E = 0x3d, |
111 | WIIPROTO_REQ_DRM_SKAI1 = 0x3e, |
112 | WIIPROTO_REQ_DRM_SKAI2 = 0x3f, |
113 | WIIPROTO_REQ_MAX |
114 | }; |
115 | |
116 | #define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \ |
117 | dev)) |
118 | |
119 | extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm); |
120 | extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, |
121 | const __u8 *wmem, __u8 size); |
122 | extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, |
123 | __u8 *rmem, __u8 size); |
124 | |
125 | #define wiiproto_req_rreg(wdata, os, sz) \ |
126 | wiiproto_req_rmem((wdata), false, (os), (sz)) |
127 | #define wiiproto_req_reeprom(wdata, os, sz) \ |
128 | wiiproto_req_rmem((wdata), true, (os), (sz)) |
129 | extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, |
130 | __u32 offset, __u16 size); |
131 | |
132 | #ifdef CONFIG_HID_WIIMOTE_EXT |
133 | |
134 | extern int wiiext_init(struct wiimote_data *wdata); |
135 | extern void wiiext_deinit(struct wiimote_data *wdata); |
136 | extern void wiiext_event(struct wiimote_data *wdata, bool plugged); |
137 | extern bool wiiext_active(struct wiimote_data *wdata); |
138 | extern void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload); |
139 | |
140 | #else |
141 | |
142 | static inline int wiiext_init(void *u) { return 0; } |
143 | static inline void wiiext_deinit(void *u) { } |
144 | static inline void wiiext_event(void *u, bool p) { } |
145 | static inline bool wiiext_active(void *u) { return false; } |
146 | static inline void wiiext_handle(void *u, const __u8 *p) { } |
147 | |
148 | #endif |
149 | |
150 | #ifdef CONFIG_DEBUG_FS |
151 | |
152 | extern int wiidebug_init(struct wiimote_data *wdata); |
153 | extern void wiidebug_deinit(struct wiimote_data *wdata); |
154 | |
155 | #else |
156 | |
157 | static inline int wiidebug_init(void *u) { return 0; } |
158 | static inline void wiidebug_deinit(void *u) { } |
159 | |
160 | #endif |
161 | |
162 | /* requires the state.lock spinlock to be held */ |
163 | static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd, |
164 | __u32 opt) |
165 | { |
166 | return wdata->state.cmd == cmd && wdata->state.opt == opt; |
167 | } |
168 | |
169 | /* requires the state.lock spinlock to be held */ |
170 | static inline void wiimote_cmd_complete(struct wiimote_data *wdata) |
171 | { |
172 | wdata->state.cmd = WIIPROTO_REQ_NULL; |
173 | complete(&wdata->state.ready); |
174 | } |
175 | |
176 | static inline int wiimote_cmd_acquire(struct wiimote_data *wdata) |
177 | { |
178 | return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0; |
179 | } |
180 | |
181 | /* requires the state.lock spinlock to be held */ |
182 | static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd, |
183 | __u32 opt) |
184 | { |
185 | INIT_COMPLETION(wdata->state.ready); |
186 | wdata->state.cmd = cmd; |
187 | wdata->state.opt = opt; |
188 | } |
189 | |
190 | static inline void wiimote_cmd_release(struct wiimote_data *wdata) |
191 | { |
192 | mutex_unlock(&wdata->state.sync); |
193 | } |
194 | |
195 | static inline int wiimote_cmd_wait(struct wiimote_data *wdata) |
196 | { |
197 | int ret; |
198 | |
199 | ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ); |
200 | if (ret < 0) |
201 | return -ERESTARTSYS; |
202 | else if (ret == 0) |
203 | return -EIO; |
204 | else |
205 | return 0; |
206 | } |
207 | |
208 | #endif |
209 |
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