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gerrit-public.fairphone.software / kernel / msm-4.9 / fad8c0e34323eb7789f93750258a2cf02dc6cf69 / . / drivers / hid / hid-wiimote.h
blob: 865740d3a3febae497e88fca4bf52f5b799f8380 [file] [log] [blame]
David Herrmann7e274402011-11-17 14:11:59 +0100[diff] [blame]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
46struct wiimote_buf {
47 __u8 data[HID_MAX_BUFFER_SIZE];
48 size_t size;
49};
50
51struct wiimote_state {
52 spinlock_t lock;
53 __u8 flags;
54 __u8 accel_split[2];
55
56 /* synchronous cmd requests */
57 struct mutex sync;
58 struct completion ready;
59 int cmd;
60 __u32 opt;
61
62 /* results of synchronous requests */
63 __u8 cmd_battery;
64 __u8 cmd_err;
David Herrmannfad8c0e2011-11-17 14:12:00 +0100[diff] [blame^]65 __u8 *cmd_read_buf;
66 __u8 cmd_read_size;
David Herrmann7e274402011-11-17 14:11:59 +0100[diff] [blame]67};
68
69struct wiimote_data {
70 struct hid_device *hdev;
71 struct input_dev *input;
72 struct led_classdev *leds[4];
73 struct input_dev *accel;
74 struct input_dev *ir;
75 struct power_supply battery;
76
77 spinlock_t qlock;
78 __u8 head;
79 __u8 tail;
80 struct wiimote_buf outq[WIIMOTE_BUFSIZE];
81 struct work_struct worker;
82
83 struct wiimote_state state;
84};
85
86enum wiiproto_reqs {
87 WIIPROTO_REQ_NULL = 0x0,
88 WIIPROTO_REQ_RUMBLE = 0x10,
89 WIIPROTO_REQ_LED = 0x11,
90 WIIPROTO_REQ_DRM = 0x12,
91 WIIPROTO_REQ_IR1 = 0x13,
92 WIIPROTO_REQ_SREQ = 0x15,
93 WIIPROTO_REQ_WMEM = 0x16,
94 WIIPROTO_REQ_RMEM = 0x17,
95 WIIPROTO_REQ_IR2 = 0x1a,
96 WIIPROTO_REQ_STATUS = 0x20,
97 WIIPROTO_REQ_DATA = 0x21,
98 WIIPROTO_REQ_RETURN = 0x22,
99 WIIPROTO_REQ_DRM_K = 0x30,
100 WIIPROTO_REQ_DRM_KA = 0x31,
101 WIIPROTO_REQ_DRM_KE = 0x32,
102 WIIPROTO_REQ_DRM_KAI = 0x33,
103 WIIPROTO_REQ_DRM_KEE = 0x34,
104 WIIPROTO_REQ_DRM_KAE = 0x35,
105 WIIPROTO_REQ_DRM_KIE = 0x36,
106 WIIPROTO_REQ_DRM_KAIE = 0x37,
107 WIIPROTO_REQ_DRM_E = 0x3d,
108 WIIPROTO_REQ_DRM_SKAI1 = 0x3e,
109 WIIPROTO_REQ_DRM_SKAI2 = 0x3f,
110};
111
112#define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \
113 dev))
114
115extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
116extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
117 const __u8 *wmem, __u8 size);
David Herrmannfad8c0e2011-11-17 14:12:00 +0100[diff] [blame^]118extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
119 __u8 *rmem, __u8 size);
David Herrmann7e274402011-11-17 14:11:59 +0100[diff] [blame]120
121/* requires the state.lock spinlock to be held */
122static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd,
123 __u32 opt)
124{
125 return wdata->state.cmd == cmd && wdata->state.opt == opt;
126}
127
128/* requires the state.lock spinlock to be held */
129static inline void wiimote_cmd_complete(struct wiimote_data *wdata)
130{
131 wdata->state.cmd = WIIPROTO_REQ_NULL;
132 complete(&wdata->state.ready);
133}
134
135static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
136{
137 return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
138}
139
140/* requires the state.lock spinlock to be held */
141static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd,
142 __u32 opt)
143{
144 INIT_COMPLETION(wdata->state.ready);
145 wdata->state.cmd = cmd;
146 wdata->state.opt = opt;
147}
148
149static inline void wiimote_cmd_release(struct wiimote_data *wdata)
150{
151 mutex_unlock(&wdata->state.sync);
152}
153
154static inline int wiimote_cmd_wait(struct wiimote_data *wdata)
155{
156 int ret;
157
158 ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ);
159 if (ret < 0)
160 return -ERESTARTSYS;
161 else if (ret == 0)
162 return -EIO;
163 else
164 return 0;
165}
166
167#endif