Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 1 | /* |
| 2 | * SEGA Dreamcast keyboard driver |
| 3 | * Based on drivers/usb/usbkbd.c |
| 4 | * Copyright YAEGASHI Takeshi, 2001 |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 5 | * Porting to 2.6 Copyright Adrian McMenamin, 2007, 2008 |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, see the file COPYING, or write |
| 19 | * to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/input.h> |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/maple.h> |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 30 | |
| 31 | /* Very simple mutex to ensure proper cleanup */ |
| 32 | static DEFINE_MUTEX(maple_keyb_mutex); |
| 33 | |
| 34 | #define NR_SCANCODES 256 |
| 35 | |
| 36 | MODULE_AUTHOR("YAEGASHI Takeshi, Adrian McMenamin"); |
| 37 | MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver"); |
| 38 | MODULE_LICENSE("GPL"); |
| 39 | |
| 40 | struct dc_kbd { |
| 41 | struct input_dev *dev; |
| 42 | unsigned short keycode[NR_SCANCODES]; |
| 43 | unsigned char new[8]; |
| 44 | unsigned char old[8]; |
| 45 | }; |
| 46 | |
| 47 | static const unsigned short dc_kbd_keycode[NR_SCANCODES] = { |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 48 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_A, KEY_B, |
| 49 | KEY_C, KEY_D, KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L, |
| 50 | KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T, KEY_U, KEY_V, |
| 51 | KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, |
| 52 | KEY_7, KEY_8, KEY_9, KEY_0, KEY_ENTER, KEY_ESC, KEY_BACKSPACE, |
| 53 | KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE, |
| 54 | KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, |
| 55 | KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT, KEY_SLASH, |
| 56 | KEY_CAPSLOCK, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 57 | KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, KEY_SYSRQ, |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 58 | KEY_SCROLLLOCK, KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP, |
| 59 | KEY_DELETE, KEY_END, KEY_PAGEDOWN, KEY_RIGHT, KEY_LEFT, KEY_DOWN, |
| 60 | KEY_UP, KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, |
| 61 | KEY_KPPLUS, KEY_KPENTER, KEY_KP1, KEY_KP2, KEY_KP3, KEY_KP4, KEY_KP5, |
| 62 | KEY_KP6, KEY_KP7, KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, KEY_102ND, |
| 63 | KEY_COMPOSE, KEY_POWER, KEY_KPEQUAL, KEY_F13, KEY_F14, KEY_F15, |
| 64 | KEY_F16, KEY_F17, KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, |
| 65 | KEY_F23, KEY_F24, KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT, KEY_STOP, |
| 66 | KEY_AGAIN, KEY_UNDO, KEY_CUT, KEY_COPY, KEY_PASTE, KEY_FIND, KEY_MUTE, |
| 67 | KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 68 | KEY_KPCOMMA, KEY_RESERVED, KEY_RO, KEY_KATAKANAHIRAGANA , KEY_YEN, |
| 69 | KEY_HENKAN, KEY_MUHENKAN, KEY_KPJPCOMMA, KEY_RESERVED, KEY_RESERVED, |
| 70 | KEY_RESERVED, KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA, |
| 71 | KEY_ZENKAKUHANKAKU, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 72 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 73 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 74 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 75 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 76 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 77 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 78 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 79 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 80 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 81 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 82 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 83 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 84 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 85 | KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
| 86 | KEY_RESERVED, KEY_RESERVED, KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, |
| 87 | KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, |
| 88 | KEY_RIGHTMETA, KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG, |
| 89 | KEY_NEXTSONG, KEY_EJECTCD, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, |
| 90 | KEY_WWW, KEY_BACK, KEY_FORWARD, KEY_STOP, KEY_FIND, KEY_SCROLLUP, |
| 91 | KEY_SCROLLDOWN, KEY_EDIT, KEY_SLEEP, KEY_SCREENLOCK, KEY_REFRESH, |
| 92 | KEY_CALC, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 93 | }; |
| 94 | |
| 95 | static void dc_scan_kbd(struct dc_kbd *kbd) |
| 96 | { |
| 97 | struct input_dev *dev = kbd->dev; |
| 98 | void *ptr; |
| 99 | int code, keycode; |
| 100 | int i; |
| 101 | |
| 102 | for (i = 0; i < 8; i++) { |
| 103 | code = i + 224; |
| 104 | keycode = kbd->keycode[code]; |
| 105 | input_event(dev, EV_MSC, MSC_SCAN, code); |
| 106 | input_report_key(dev, keycode, (kbd->new[0] >> i) & 1); |
| 107 | } |
| 108 | |
| 109 | for (i = 2; i < 8; i++) { |
| 110 | ptr = memchr(kbd->new + 2, kbd->old[i], 6); |
| 111 | code = kbd->old[i]; |
| 112 | if (code > 3 && ptr == NULL) { |
| 113 | keycode = kbd->keycode[code]; |
| 114 | if (keycode) { |
| 115 | input_event(dev, EV_MSC, MSC_SCAN, code); |
| 116 | input_report_key(dev, keycode, 0); |
| 117 | } else |
| 118 | printk(KERN_DEBUG "maple_keyb: " |
| 119 | "Unknown key (scancode %#x) released.", |
| 120 | code); |
| 121 | } |
| 122 | ptr = memchr(kbd->old + 2, kbd->new[i], 6); |
| 123 | code = kbd->new[i]; |
| 124 | if (code > 3 && ptr) { |
| 125 | keycode = kbd->keycode[code]; |
| 126 | if (keycode) { |
| 127 | input_event(dev, EV_MSC, MSC_SCAN, code); |
| 128 | input_report_key(dev, keycode, 1); |
| 129 | } else |
| 130 | printk(KERN_DEBUG "maple_keyb: " |
| 131 | "Unknown key (scancode %#x) pressed.", |
| 132 | code); |
| 133 | } |
| 134 | } |
| 135 | input_sync(dev); |
| 136 | memcpy(kbd->old, kbd->new, 8); |
| 137 | } |
| 138 | |
| 139 | static void dc_kbd_callback(struct mapleq *mq) |
| 140 | { |
| 141 | struct maple_device *mapledev = mq->dev; |
| 142 | struct dc_kbd *kbd = mapledev->private_data; |
| 143 | unsigned long *buf = mq->recvbuf; |
| 144 | |
| 145 | /* |
| 146 | * We should always be getting the lock because the only |
| 147 | * time it may be locked if driver is in cleanup phase. |
| 148 | */ |
| 149 | if (likely(mutex_trylock(&maple_keyb_mutex))) { |
| 150 | |
| 151 | if (buf[1] == mapledev->function) { |
| 152 | memcpy(kbd->new, buf + 2, 8); |
| 153 | dc_scan_kbd(kbd); |
| 154 | } |
| 155 | |
| 156 | mutex_unlock(&maple_keyb_mutex); |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | static int dc_kbd_connect(struct maple_device *mdev) |
| 161 | { |
| 162 | int i, error; |
| 163 | struct dc_kbd *kbd; |
| 164 | struct input_dev *dev; |
| 165 | |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 166 | kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL); |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 167 | if (!kbd) { |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 168 | error = -ENOMEM; |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 169 | goto fail_kbd; |
| 170 | } |
| 171 | dev = input_allocate_device(); |
| 172 | if (!dev) { |
| 173 | error = -ENOMEM; |
| 174 | goto fail_dev; |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | mdev->private_data = kbd; |
| 178 | |
| 179 | kbd->dev = dev; |
| 180 | memcpy(kbd->keycode, dc_kbd_keycode, sizeof(kbd->keycode)); |
| 181 | |
| 182 | dev->name = mdev->product_name; |
| 183 | dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); |
| 184 | dev->keycode = kbd->keycode; |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 185 | dev->keycodesize = sizeof(unsigned short); |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 186 | dev->keycodemax = ARRAY_SIZE(kbd->keycode); |
| 187 | dev->id.bustype = BUS_HOST; |
| 188 | dev->dev.parent = &mdev->dev; |
| 189 | |
| 190 | for (i = 0; i < NR_SCANCODES; i++) |
| 191 | __set_bit(dc_kbd_keycode[i], dev->keybit); |
| 192 | __clear_bit(KEY_RESERVED, dev->keybit); |
| 193 | |
| 194 | input_set_capability(dev, EV_MSC, MSC_SCAN); |
| 195 | input_set_drvdata(dev, kbd); |
| 196 | |
| 197 | error = input_register_device(dev); |
| 198 | if (error) |
| 199 | goto fail; |
| 200 | |
| 201 | /* Maple polling is locked to VBLANK - which may be just 50/s */ |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 202 | maple_getcond_callback(mdev, dc_kbd_callback, HZ/50, |
| 203 | MAPLE_FUNC_KEYBOARD); |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 204 | return 0; |
| 205 | |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 206 | fail: |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 207 | input_free_device(dev); |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 208 | fail_dev: |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 209 | kfree(kbd); |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 210 | fail_kbd: |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 211 | mdev->private_data = NULL; |
| 212 | return error; |
| 213 | } |
| 214 | |
| 215 | static void dc_kbd_disconnect(struct maple_device *mdev) |
| 216 | { |
| 217 | struct dc_kbd *kbd; |
| 218 | |
| 219 | mutex_lock(&maple_keyb_mutex); |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 220 | mdev->callback = NULL; |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 221 | kbd = mdev->private_data; |
| 222 | mdev->private_data = NULL; |
| 223 | input_unregister_device(kbd->dev); |
| 224 | kfree(kbd); |
| 225 | |
| 226 | mutex_unlock(&maple_keyb_mutex); |
| 227 | } |
| 228 | |
| 229 | /* allow the keyboard to be used */ |
| 230 | static int probe_maple_kbd(struct device *dev) |
| 231 | { |
| 232 | struct maple_device *mdev = to_maple_dev(dev); |
| 233 | struct maple_driver *mdrv = to_maple_driver(dev->driver); |
| 234 | int error; |
| 235 | |
| 236 | error = dc_kbd_connect(mdev); |
| 237 | if (error) |
| 238 | return error; |
| 239 | |
| 240 | mdev->driver = mdrv; |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 241 | |
| 242 | return 0; |
| 243 | } |
| 244 | |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 245 | static int remove_maple_kbd(struct device *dev) |
| 246 | { |
| 247 | struct maple_device *mdev = to_maple_dev(dev); |
| 248 | |
| 249 | dc_kbd_disconnect(mdev); |
| 250 | return 0; |
| 251 | } |
| 252 | |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 253 | static struct maple_driver dc_kbd_driver = { |
| 254 | .function = MAPLE_FUNC_KEYBOARD, |
| 255 | .connect = dc_kbd_connect, |
| 256 | .disconnect = dc_kbd_disconnect, |
| 257 | .drv = { |
| 258 | .name = "Dreamcast_keyboard", |
| 259 | .probe = probe_maple_kbd, |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 260 | .remove = remove_maple_kbd, |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 261 | }, |
| 262 | }; |
| 263 | |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 264 | static int unplug_maple_keyb(struct device *dev, void *ignored) |
| 265 | { |
| 266 | /* Please DO NOT really unplug your keyboard */ |
| 267 | struct maple_device *mdev; |
| 268 | |
| 269 | mdev = to_maple_dev(dev); |
| 270 | if ((mdev->function & MAPLE_FUNC_KEYBOARD) |
| 271 | && (mdev->driver == &dc_kbd_driver)) |
| 272 | remove_maple_kbd(dev); |
| 273 | |
| 274 | return 0; |
| 275 | } |
| 276 | |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 277 | static int __init dc_kbd_init(void) |
| 278 | { |
| 279 | return maple_driver_register(&dc_kbd_driver.drv); |
| 280 | } |
| 281 | |
| 282 | static void __exit dc_kbd_exit(void) |
| 283 | { |
Adrian McMenamin | 86d9d32 | 2008-07-30 12:31:38 -0700 | [diff] [blame^] | 284 | bus_for_each_dev(&maple_bus_type, NULL, NULL, unplug_maple_keyb); |
Adrian McMenamin | b11d212 | 2007-10-12 20:36:13 -0400 | [diff] [blame] | 285 | driver_unregister(&dc_kbd_driver.drv); |
| 286 | } |
| 287 | |
| 288 | module_init(dc_kbd_init); |
| 289 | module_exit(dc_kbd_exit); |