David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 1 | #ifndef __HID_WIIMOTE_H |
| 2 | #define __HID_WIIMOTE_H |
| 3 | |
| 4 | /* |
David Herrmann | 92eda7e | 2013-05-05 23:12:45 +0200 | [diff] [blame] | 5 | * HID driver for Nintendo Wii / Wii U peripherals |
| 6 | * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com> |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 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> |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 25 | #include <linux/timer.h> |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 26 | |
| 27 | #define WIIMOTE_NAME "Nintendo Wii Remote" |
| 28 | #define WIIMOTE_BUFSIZE 32 |
| 29 | |
| 30 | #define WIIPROTO_FLAG_LED1 0x01 |
| 31 | #define WIIPROTO_FLAG_LED2 0x02 |
| 32 | #define WIIPROTO_FLAG_LED3 0x04 |
| 33 | #define WIIPROTO_FLAG_LED4 0x08 |
| 34 | #define WIIPROTO_FLAG_RUMBLE 0x10 |
| 35 | #define WIIPROTO_FLAG_ACCEL 0x20 |
| 36 | #define WIIPROTO_FLAG_IR_BASIC 0x40 |
| 37 | #define WIIPROTO_FLAG_IR_EXT 0x80 |
| 38 | #define WIIPROTO_FLAG_IR_FULL 0xc0 /* IR_BASIC | IR_EXT */ |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 39 | #define WIIPROTO_FLAG_EXT_PLUGGED 0x0100 |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 40 | #define WIIPROTO_FLAG_EXT_USED 0x0200 |
| 41 | #define WIIPROTO_FLAG_EXT_ACTIVE 0x0400 |
| 42 | #define WIIPROTO_FLAG_MP_PLUGGED 0x0800 |
| 43 | #define WIIPROTO_FLAG_MP_USED 0x1000 |
| 44 | #define WIIPROTO_FLAG_MP_ACTIVE 0x2000 |
| 45 | #define WIIPROTO_FLAG_EXITING 0x4000 |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 46 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 47 | #define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \ |
| 48 | WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4) |
| 49 | #define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \ |
| 50 | WIIPROTO_FLAG_IR_FULL) |
| 51 | |
| 52 | /* return flag for led \num */ |
| 53 | #define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1)) |
| 54 | |
David Herrmann | 20cef81 | 2013-05-05 23:12:52 +0200 | [diff] [blame] | 55 | enum wiiproto_keys { |
| 56 | WIIPROTO_KEY_LEFT, |
| 57 | WIIPROTO_KEY_RIGHT, |
| 58 | WIIPROTO_KEY_UP, |
| 59 | WIIPROTO_KEY_DOWN, |
| 60 | WIIPROTO_KEY_PLUS, |
| 61 | WIIPROTO_KEY_MINUS, |
| 62 | WIIPROTO_KEY_ONE, |
| 63 | WIIPROTO_KEY_TWO, |
| 64 | WIIPROTO_KEY_A, |
| 65 | WIIPROTO_KEY_B, |
| 66 | WIIPROTO_KEY_HOME, |
| 67 | WIIPROTO_KEY_COUNT |
| 68 | }; |
| 69 | |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 70 | enum wiimote_devtype { |
| 71 | WIIMOTE_DEV_PENDING, |
| 72 | WIIMOTE_DEV_UNKNOWN, |
| 73 | WIIMOTE_DEV_GENERIC, |
| 74 | WIIMOTE_DEV_GEN10, |
| 75 | WIIMOTE_DEV_GEN20, |
David Herrmann | f1d4bed | 2013-05-05 23:12:58 +0200 | [diff] [blame] | 76 | WIIMOTE_DEV_BALANCE_BOARD, |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 77 | WIIMOTE_DEV_NUM, |
| 78 | }; |
| 79 | |
| 80 | enum wiimote_exttype { |
| 81 | WIIMOTE_EXT_NONE, |
| 82 | WIIMOTE_EXT_UNKNOWN, |
David Herrmann | b6ee67b | 2013-05-05 23:12:59 +0200 | [diff] [blame^] | 83 | WIIMOTE_EXT_NUNCHUK, |
David Herrmann | f1d4bed | 2013-05-05 23:12:58 +0200 | [diff] [blame] | 84 | WIIMOTE_EXT_BALANCE_BOARD, |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 85 | WIIMOTE_EXT_NUM, |
| 86 | }; |
| 87 | |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 88 | enum wiimote_mptype { |
| 89 | WIIMOTE_MP_NONE, |
| 90 | WIIMOTE_MP_UNKNOWN, |
| 91 | WIIMOTE_MP_SINGLE, |
| 92 | WIIMOTE_MP_PASSTHROUGH_NUNCHUK, |
| 93 | WIIMOTE_MP_PASSTHROUGH_CLASSIC, |
| 94 | }; |
| 95 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 96 | struct wiimote_buf { |
| 97 | __u8 data[HID_MAX_BUFFER_SIZE]; |
| 98 | size_t size; |
| 99 | }; |
| 100 | |
David Herrmann | 1393853 | 2013-05-05 23:12:46 +0200 | [diff] [blame] | 101 | struct wiimote_queue { |
| 102 | spinlock_t lock; |
| 103 | struct work_struct worker; |
| 104 | __u8 head; |
| 105 | __u8 tail; |
| 106 | struct wiimote_buf outq[WIIMOTE_BUFSIZE]; |
| 107 | }; |
| 108 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 109 | struct wiimote_state { |
| 110 | spinlock_t lock; |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 111 | __u32 flags; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 112 | __u8 accel_split[2]; |
David Herrmann | 43d782a | 2011-11-17 14:12:12 +0100 | [diff] [blame] | 113 | __u8 drm; |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 114 | __u8 devtype; |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 115 | __u8 exttype; |
| 116 | __u8 mp; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 117 | |
| 118 | /* synchronous cmd requests */ |
| 119 | struct mutex sync; |
| 120 | struct completion ready; |
| 121 | int cmd; |
| 122 | __u32 opt; |
| 123 | |
| 124 | /* results of synchronous requests */ |
| 125 | __u8 cmd_battery; |
| 126 | __u8 cmd_err; |
David Herrmann | fad8c0e | 2011-11-17 14:12:00 +0100 | [diff] [blame] | 127 | __u8 *cmd_read_buf; |
| 128 | __u8 cmd_read_size; |
David Herrmann | f1d4bed | 2013-05-05 23:12:58 +0200 | [diff] [blame] | 129 | |
| 130 | /* calibration data */ |
| 131 | __u16 calib_bboard[4][3]; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 132 | }; |
| 133 | |
| 134 | struct wiimote_data { |
| 135 | struct hid_device *hdev; |
| 136 | struct input_dev *input; |
| 137 | struct led_classdev *leds[4]; |
| 138 | struct input_dev *accel; |
| 139 | struct input_dev *ir; |
| 140 | struct power_supply battery; |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 141 | struct timer_list timer; |
David Herrmann | cb99221 | 2011-11-17 14:12:01 +0100 | [diff] [blame] | 142 | struct wiimote_ext *ext; |
David Herrmann | 43e5e7c | 2011-11-17 14:12:10 +0100 | [diff] [blame] | 143 | struct wiimote_debug *debug; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 144 | |
David Herrmann | f1d4bed | 2013-05-05 23:12:58 +0200 | [diff] [blame] | 145 | union { |
| 146 | struct input_dev *input; |
| 147 | } extension; |
| 148 | |
David Herrmann | 1393853 | 2013-05-05 23:12:46 +0200 | [diff] [blame] | 149 | struct wiimote_queue queue; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 150 | struct wiimote_state state; |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 151 | struct work_struct init_worker; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 152 | }; |
| 153 | |
David Herrmann | 27f0694 | 2013-05-05 23:12:51 +0200 | [diff] [blame] | 154 | /* wiimote modules */ |
| 155 | |
| 156 | enum wiimod_module { |
David Herrmann | 20cef81 | 2013-05-05 23:12:52 +0200 | [diff] [blame] | 157 | WIIMOD_KEYS, |
| 158 | WIIMOD_RUMBLE, |
David Herrmann | dcf3923 | 2013-05-05 23:12:53 +0200 | [diff] [blame] | 159 | WIIMOD_BATTERY, |
David Herrmann | 6c5ae01 | 2013-05-05 23:12:54 +0200 | [diff] [blame] | 160 | WIIMOD_LED1, |
| 161 | WIIMOD_LED2, |
| 162 | WIIMOD_LED3, |
| 163 | WIIMOD_LED4, |
David Herrmann | 0ea1675 | 2013-05-05 23:12:55 +0200 | [diff] [blame] | 164 | WIIMOD_ACCEL, |
David Herrmann | 3b5f03c | 2013-05-05 23:12:56 +0200 | [diff] [blame] | 165 | WIIMOD_IR, |
David Herrmann | 27f0694 | 2013-05-05 23:12:51 +0200 | [diff] [blame] | 166 | WIIMOD_NUM, |
| 167 | WIIMOD_NULL = WIIMOD_NUM, |
| 168 | }; |
| 169 | |
| 170 | #define WIIMOD_FLAG_INPUT 0x0001 |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 171 | #define WIIMOD_FLAG_EXT8 0x0002 |
| 172 | #define WIIMOD_FLAG_EXT16 0x0004 |
David Herrmann | 27f0694 | 2013-05-05 23:12:51 +0200 | [diff] [blame] | 173 | |
| 174 | struct wiimod_ops { |
| 175 | __u16 flags; |
| 176 | unsigned long arg; |
| 177 | int (*probe) (const struct wiimod_ops *ops, |
| 178 | struct wiimote_data *wdata); |
| 179 | void (*remove) (const struct wiimod_ops *ops, |
| 180 | struct wiimote_data *wdata); |
| 181 | |
| 182 | void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys); |
| 183 | void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel); |
| 184 | void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed, |
| 185 | unsigned int id); |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 186 | void (*in_mp) (struct wiimote_data *wdata, const __u8 *mp); |
| 187 | void (*in_ext) (struct wiimote_data *wdata, const __u8 *ext); |
David Herrmann | 27f0694 | 2013-05-05 23:12:51 +0200 | [diff] [blame] | 188 | }; |
| 189 | |
| 190 | extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM]; |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 191 | extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM]; |
| 192 | extern const struct wiimod_ops wiimod_mp; |
David Herrmann | 27f0694 | 2013-05-05 23:12:51 +0200 | [diff] [blame] | 193 | |
| 194 | /* wiimote requests */ |
| 195 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 196 | enum wiiproto_reqs { |
| 197 | WIIPROTO_REQ_NULL = 0x0, |
| 198 | WIIPROTO_REQ_RUMBLE = 0x10, |
| 199 | WIIPROTO_REQ_LED = 0x11, |
| 200 | WIIPROTO_REQ_DRM = 0x12, |
| 201 | WIIPROTO_REQ_IR1 = 0x13, |
| 202 | WIIPROTO_REQ_SREQ = 0x15, |
| 203 | WIIPROTO_REQ_WMEM = 0x16, |
| 204 | WIIPROTO_REQ_RMEM = 0x17, |
| 205 | WIIPROTO_REQ_IR2 = 0x1a, |
| 206 | WIIPROTO_REQ_STATUS = 0x20, |
| 207 | WIIPROTO_REQ_DATA = 0x21, |
| 208 | WIIPROTO_REQ_RETURN = 0x22, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 209 | |
| 210 | /* DRM_K: BB*2 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 211 | WIIPROTO_REQ_DRM_K = 0x30, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 212 | |
| 213 | /* DRM_KA: BB*2 AA*3 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 214 | WIIPROTO_REQ_DRM_KA = 0x31, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 215 | |
| 216 | /* DRM_KE: BB*2 EE*8 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 217 | WIIPROTO_REQ_DRM_KE = 0x32, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 218 | |
| 219 | /* DRM_KAI: BB*2 AA*3 II*12 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 220 | WIIPROTO_REQ_DRM_KAI = 0x33, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 221 | |
| 222 | /* DRM_KEE: BB*2 EE*19 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 223 | WIIPROTO_REQ_DRM_KEE = 0x34, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 224 | |
| 225 | /* DRM_KAE: BB*2 AA*3 EE*16 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 226 | WIIPROTO_REQ_DRM_KAE = 0x35, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 227 | |
| 228 | /* DRM_KIE: BB*2 II*10 EE*9 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 229 | WIIPROTO_REQ_DRM_KIE = 0x36, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 230 | |
| 231 | /* DRM_KAIE: BB*2 AA*3 II*10 EE*6 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 232 | WIIPROTO_REQ_DRM_KAIE = 0x37, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 233 | |
| 234 | /* DRM_E: EE*21 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 235 | WIIPROTO_REQ_DRM_E = 0x3d, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 236 | |
| 237 | /* DRM_SKAI1: BB*2 AA*1 II*18 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 238 | WIIPROTO_REQ_DRM_SKAI1 = 0x3e, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 239 | |
| 240 | /* DRM_SKAI2: BB*2 AA*1 II*18 */ |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 241 | WIIPROTO_REQ_DRM_SKAI2 = 0x3f, |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 242 | |
David Herrmann | 43d782a | 2011-11-17 14:12:12 +0100 | [diff] [blame] | 243 | WIIPROTO_REQ_MAX |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 244 | }; |
| 245 | |
| 246 | #define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \ |
| 247 | dev)) |
| 248 | |
David Herrmann | 4148b6b | 2013-05-05 23:12:57 +0200 | [diff] [blame] | 249 | void __wiimote_schedule(struct wiimote_data *wdata); |
| 250 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 251 | extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm); |
David Herrmann | 20cef81 | 2013-05-05 23:12:52 +0200 | [diff] [blame] | 252 | extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble); |
David Herrmann | 6c5ae01 | 2013-05-05 23:12:54 +0200 | [diff] [blame] | 253 | extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds); |
David Herrmann | dcf3923 | 2013-05-05 23:12:53 +0200 | [diff] [blame] | 254 | extern void wiiproto_req_status(struct wiimote_data *wdata); |
David Herrmann | 0ea1675 | 2013-05-05 23:12:55 +0200 | [diff] [blame] | 255 | extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel); |
David Herrmann | 3b5f03c | 2013-05-05 23:12:56 +0200 | [diff] [blame] | 256 | extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags); |
| 257 | extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags); |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 258 | extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, |
| 259 | const __u8 *wmem, __u8 size); |
David Herrmann | fad8c0e | 2011-11-17 14:12:00 +0100 | [diff] [blame] | 260 | extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, |
| 261 | __u8 *rmem, __u8 size); |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 262 | |
David Herrmann | 1d3452c | 2011-11-17 14:12:11 +0100 | [diff] [blame] | 263 | #define wiiproto_req_rreg(wdata, os, sz) \ |
| 264 | wiiproto_req_rmem((wdata), false, (os), (sz)) |
| 265 | #define wiiproto_req_reeprom(wdata, os, sz) \ |
| 266 | wiiproto_req_rmem((wdata), true, (os), (sz)) |
| 267 | extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, |
| 268 | __u32 offset, __u16 size); |
| 269 | |
David Herrmann | cb99221 | 2011-11-17 14:12:01 +0100 | [diff] [blame] | 270 | #ifdef CONFIG_HID_WIIMOTE_EXT |
| 271 | |
| 272 | extern int wiiext_init(struct wiimote_data *wdata); |
| 273 | extern void wiiext_deinit(struct wiimote_data *wdata); |
| 274 | extern void wiiext_event(struct wiimote_data *wdata, bool plugged); |
| 275 | extern bool wiiext_active(struct wiimote_data *wdata); |
David Herrmann | 0b6815d | 2011-11-17 14:12:06 +0100 | [diff] [blame] | 276 | extern void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload); |
David Herrmann | cb99221 | 2011-11-17 14:12:01 +0100 | [diff] [blame] | 277 | |
| 278 | #else |
| 279 | |
| 280 | static inline int wiiext_init(void *u) { return 0; } |
| 281 | static inline void wiiext_deinit(void *u) { } |
| 282 | static inline void wiiext_event(void *u, bool p) { } |
| 283 | static inline bool wiiext_active(void *u) { return false; } |
David Herrmann | 0b6815d | 2011-11-17 14:12:06 +0100 | [diff] [blame] | 284 | static inline void wiiext_handle(void *u, const __u8 *p) { } |
David Herrmann | cb99221 | 2011-11-17 14:12:01 +0100 | [diff] [blame] | 285 | |
| 286 | #endif |
| 287 | |
David Herrmann | 43e5e7c | 2011-11-17 14:12:10 +0100 | [diff] [blame] | 288 | #ifdef CONFIG_DEBUG_FS |
| 289 | |
| 290 | extern int wiidebug_init(struct wiimote_data *wdata); |
| 291 | extern void wiidebug_deinit(struct wiimote_data *wdata); |
| 292 | |
| 293 | #else |
| 294 | |
| 295 | static inline int wiidebug_init(void *u) { return 0; } |
| 296 | static inline void wiidebug_deinit(void *u) { } |
| 297 | |
| 298 | #endif |
| 299 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 300 | /* requires the state.lock spinlock to be held */ |
| 301 | static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd, |
| 302 | __u32 opt) |
| 303 | { |
| 304 | return wdata->state.cmd == cmd && wdata->state.opt == opt; |
| 305 | } |
| 306 | |
| 307 | /* requires the state.lock spinlock to be held */ |
| 308 | static inline void wiimote_cmd_complete(struct wiimote_data *wdata) |
| 309 | { |
| 310 | wdata->state.cmd = WIIPROTO_REQ_NULL; |
| 311 | complete(&wdata->state.ready); |
| 312 | } |
| 313 | |
David Herrmann | d758b1f0 | 2013-05-05 23:12:50 +0200 | [diff] [blame] | 314 | /* requires the state.lock spinlock to be held */ |
| 315 | static inline void wiimote_cmd_abort(struct wiimote_data *wdata) |
| 316 | { |
| 317 | /* Abort synchronous request by waking up the sleeping caller. But |
| 318 | * reset the state.cmd field to an invalid value so no further event |
| 319 | * handlers will work with it. */ |
| 320 | wdata->state.cmd = WIIPROTO_REQ_MAX; |
| 321 | complete(&wdata->state.ready); |
| 322 | } |
| 323 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 324 | static inline int wiimote_cmd_acquire(struct wiimote_data *wdata) |
| 325 | { |
| 326 | return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0; |
| 327 | } |
| 328 | |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 329 | static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata) |
| 330 | { |
| 331 | mutex_lock(&wdata->state.sync); |
| 332 | } |
| 333 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 334 | /* requires the state.lock spinlock to be held */ |
| 335 | static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd, |
| 336 | __u32 opt) |
| 337 | { |
| 338 | INIT_COMPLETION(wdata->state.ready); |
| 339 | wdata->state.cmd = cmd; |
| 340 | wdata->state.opt = opt; |
| 341 | } |
| 342 | |
| 343 | static inline void wiimote_cmd_release(struct wiimote_data *wdata) |
| 344 | { |
| 345 | mutex_unlock(&wdata->state.sync); |
| 346 | } |
| 347 | |
| 348 | static inline int wiimote_cmd_wait(struct wiimote_data *wdata) |
| 349 | { |
| 350 | int ret; |
| 351 | |
David Herrmann | d758b1f0 | 2013-05-05 23:12:50 +0200 | [diff] [blame] | 352 | /* The completion acts as implicit memory barrier so we can safely |
| 353 | * assume that state.cmd is set on success/failure and isn't accessed |
| 354 | * by any other thread, anymore. */ |
| 355 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 356 | ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ); |
| 357 | if (ret < 0) |
| 358 | return -ERESTARTSYS; |
| 359 | else if (ret == 0) |
| 360 | return -EIO; |
David Herrmann | d758b1f0 | 2013-05-05 23:12:50 +0200 | [diff] [blame] | 361 | else if (wdata->state.cmd != WIIPROTO_REQ_NULL) |
| 362 | return -EIO; |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 363 | else |
| 364 | return 0; |
| 365 | } |
| 366 | |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 367 | static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata) |
| 368 | { |
| 369 | unsigned long ret; |
| 370 | |
David Herrmann | d758b1f0 | 2013-05-05 23:12:50 +0200 | [diff] [blame] | 371 | /* no locking needed; see wiimote_cmd_wait() */ |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 372 | ret = wait_for_completion_timeout(&wdata->state.ready, HZ); |
| 373 | if (!ret) |
| 374 | return -EIO; |
David Herrmann | d758b1f0 | 2013-05-05 23:12:50 +0200 | [diff] [blame] | 375 | else if (wdata->state.cmd != WIIPROTO_REQ_NULL) |
| 376 | return -EIO; |
David Herrmann | c57ff76 | 2013-05-05 23:12:48 +0200 | [diff] [blame] | 377 | else |
| 378 | return 0; |
| 379 | } |
| 380 | |
David Herrmann | 7e27440 | 2011-11-17 14:11:59 +0100 | [diff] [blame] | 381 | #endif |