Rev 522 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 519 | mauro | 1 | /* |
| 538 | mauro | 2 | * Input driver keyboard module |
| 519 | mauro | 3 | */ |
| 4 | |||
| 5 | /* |
||
| 6 | * This program is free software; you can redistribute it and/or modify |
||
| 7 | * it under the terms of the GNU General Public License as published by |
||
| 8 | * the Free Software Foundation; either version 2 of the License, or |
||
| 9 | * (at your option) any later version. |
||
| 10 | * |
||
| 11 | * This program is distributed in the hope that it will be useful, |
||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 14 | * GNU General Public License for more details. |
||
| 15 | * |
||
| 16 | * You should have received a copy of the GNU General Public License |
||
| 17 | * along with this program; if not, write to the Free Software |
||
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
| 19 | */ |
||
| 20 | |||
| 21 | #include <linuxcomp.h> |
||
| 22 | |||
| 23 | #include <linux/slab.h> |
||
| 24 | #include <linux/module.h> |
||
| 25 | #include <linux/input.h> |
||
| 26 | #include <linux/init.h> |
||
| 27 | #include <linux/device.h> |
||
| 28 | |||
| 29 | #include <linux/kbd_kern.h> |
||
| 30 | #include <linux/kbd_diacr.h> |
||
| 31 | |||
| 32 | //#define DEBUG_KBD |
||
| 33 | |||
| 34 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
||
| 538 | mauro | 35 | MODULE_DESCRIPTION("Input driver keyboard module"); |
| 519 | mauro | 36 | MODULE_LICENSE("GPL"); |
| 37 | |||
| 522 | mauro | 38 | extern void shark_kbd_exec(void); |
| 519 | mauro | 39 | |
| 40 | /* Buffer Ssize */ |
||
| 41 | #define KEYB_BUFFERSIZE 256 |
||
| 42 | |||
| 43 | /* Buffer Mask ( i=(i+1)&MASK is better than i=(i+1)%SIZE ) */ |
||
| 44 | #define KEYB_BUFFERMASK 0xff |
||
| 45 | |||
| 46 | /* Circular Buffer */ |
||
| 47 | static struct keyb_event { |
||
| 48 | unsigned int keycode; |
||
| 49 | int down; |
||
| 50 | } kbuffer[KEYB_BUFFERSIZE]; |
||
| 51 | |||
| 52 | /* |
||
| 53 | * Buffer Pointers |
||
| 54 | * data is inserted to khead |
||
| 55 | * data is kept from ktail+1 |
||
| 56 | * (khead point to ktail+1 when buffer is empty) |
||
| 57 | */ |
||
| 58 | static unsigned ktail, khead; |
||
| 59 | |||
| 60 | static char kbd_name[] = "kbd"; |
||
| 61 | static struct input_handler kbd_handler; |
||
| 62 | |||
| 63 | static unsigned char ledstate = 0xff; /* undefined */ |
||
| 64 | |||
| 65 | /* |
||
| 66 | * Start / Stop Keyboard |
||
| 67 | */ |
||
| 68 | int kbd_enable(void) |
||
| 69 | { |
||
| 70 | struct list_head *node; |
||
| 71 | |||
| 72 | list_for_each(node,&kbd_handler.h_list) { |
||
| 73 | struct input_handle *handle = to_handle_h(node); |
||
| 74 | struct input_dev *dev = handle->dev; |
||
| 75 | |||
| 76 | if (test_bit(EV_REP, dev->evbit)) { |
||
| 77 | input_event(dev, EV_PWR, 1, 0); |
||
| 78 | } |
||
| 79 | } |
||
| 80 | |||
| 81 | return 0; |
||
| 82 | |||
| 83 | } |
||
| 84 | |||
| 85 | int kbd_disable(void) |
||
| 86 | { |
||
| 87 | struct list_head *node; |
||
| 88 | |||
| 89 | list_for_each(node,&kbd_handler.h_list) { |
||
| 90 | struct input_handle *handle = to_handle_h(node); |
||
| 91 | struct input_dev *dev = handle->dev; |
||
| 92 | |||
| 93 | if (test_bit(EV_REP, dev->evbit)) { |
||
| 94 | input_event(dev, EV_PWR, 0, 0); |
||
| 95 | } |
||
| 96 | } |
||
| 97 | |||
| 98 | return 0; |
||
| 99 | |||
| 100 | } |
||
| 101 | |||
| 102 | /* |
||
| 103 | * Get data from the keyboard (primary port) |
||
| 104 | * |
||
| 105 | * it's follow the port_receive() semantic |
||
| 106 | */ |
||
| 107 | int kbd_get(unsigned int *data, BYTE access) |
||
| 108 | { |
||
| 109 | if ( ((ktail+1) & KEYB_BUFFERMASK) == ((khead) & KEYB_BUFFERMASK) ) |
||
| 110 | return -1; |
||
| 111 | |||
| 112 | ktail = (ktail+1) & KEYB_BUFFERMASK; |
||
| 113 | *data = kbuffer[ktail].keycode; |
||
| 114 | |||
| 115 | return kbuffer[ktail].down; |
||
| 116 | } |
||
| 117 | |||
| 118 | /* |
||
| 119 | * Making beeps and bells. |
||
| 120 | */ |
||
| 121 | static void kbd_nosound(unsigned long ignored) |
||
| 122 | { |
||
| 123 | struct list_head * node; |
||
| 124 | |||
| 125 | list_for_each(node,&kbd_handler.h_list) { |
||
| 126 | struct input_handle *handle = to_handle_h(node); |
||
| 127 | if (test_bit(EV_SND, handle->dev->evbit)) { |
||
| 128 | if (test_bit(SND_TONE, handle->dev->sndbit)) |
||
| 129 | input_event(handle->dev, EV_SND, SND_TONE, 0); |
||
| 130 | if (test_bit(SND_BELL, handle->dev->sndbit)) |
||
| 131 | input_event(handle->dev, EV_SND, SND_BELL, 0); |
||
| 132 | } |
||
| 133 | } |
||
| 134 | } |
||
| 135 | |||
| 136 | static struct timer_list kd_mksound_timer = |
||
| 137 | TIMER_INITIALIZER(kbd_nosound, 0, 0); |
||
| 138 | |||
| 139 | void kbd_mksound(unsigned int hz, unsigned int ticks) |
||
| 140 | { |
||
| 141 | struct list_head * node; |
||
| 142 | |||
| 143 | del_timer(&kd_mksound_timer); |
||
| 144 | |||
| 145 | if (hz) { |
||
| 146 | list_for_each_prev(node,&kbd_handler.h_list) { |
||
| 147 | struct input_handle *handle = to_handle_h(node); |
||
| 148 | if (test_bit(EV_SND, handle->dev->evbit)) { |
||
| 149 | if (test_bit(SND_TONE, handle->dev->sndbit)) { |
||
| 150 | input_event(handle->dev, EV_SND, SND_TONE, hz); |
||
| 151 | break; |
||
| 152 | } |
||
| 153 | if (test_bit(SND_BELL, handle->dev->sndbit)) { |
||
| 154 | input_event(handle->dev, EV_SND, SND_BELL, 1); |
||
| 155 | break; |
||
| 156 | } |
||
| 157 | } |
||
| 158 | } |
||
| 159 | if (ticks) |
||
| 160 | mod_timer(&kd_mksound_timer, jiffies26 + ticks); |
||
| 161 | } else |
||
| 162 | kbd_nosound(0); |
||
| 163 | } |
||
| 164 | |||
| 165 | /* |
||
| 166 | * Setting the keyboard rate. |
||
| 167 | */ |
||
| 168 | |||
| 169 | //int kbd_rate(struct kbd_repeat *rep) |
||
| 170 | int kbd_rate(unsigned int *delay, unsigned int *period) |
||
| 171 | { |
||
| 172 | struct list_head *node; |
||
| 173 | unsigned int d = 0; |
||
| 174 | unsigned int p = 0; |
||
| 175 | |||
| 176 | list_for_each(node,&kbd_handler.h_list) { |
||
| 177 | struct input_handle *handle = to_handle_h(node); |
||
| 178 | struct input_dev *dev = handle->dev; |
||
| 179 | |||
| 180 | if (test_bit(EV_REP, dev->evbit)) { |
||
| 181 | if (*delay > 0) |
||
| 182 | input_event(dev, EV_REP, REP_DELAY, *delay); |
||
| 183 | if (*period > 0) |
||
| 184 | input_event(dev, EV_REP, REP_PERIOD, *period); |
||
| 185 | d = dev->rep[REP_DELAY]; |
||
| 186 | p = dev->rep[REP_PERIOD]; |
||
| 187 | } |
||
| 188 | } |
||
| 189 | *delay = d; |
||
| 190 | *period = p; |
||
| 191 | return 0; |
||
| 192 | } |
||
| 193 | |||
| 194 | /* |
||
| 195 | * This allows a keyboard to pick the LED state. |
||
| 196 | */ |
||
| 197 | void kbd_refresh_leds(void) |
||
| 198 | { |
||
| 199 | struct list_head * node; |
||
| 200 | unsigned char leds = ledstate; |
||
| 201 | |||
| 202 | list_for_each(node,&kbd_handler.h_list) { |
||
| 203 | struct input_handle * handle = to_handle_h(node); |
||
| 204 | input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01)); |
||
| 205 | input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02)); |
||
| 206 | input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04)); |
||
| 207 | input_sync(handle->dev); |
||
| 208 | } |
||
| 209 | } |
||
| 210 | |||
| 211 | void kbd_setleds(unsigned int led) |
||
| 212 | { |
||
| 213 | ledstate = led; |
||
| 214 | kbd_refresh_leds(); |
||
| 215 | } |
||
| 216 | |||
| 217 | static void kbd_event(struct input_handle *handle, unsigned int type, unsigned int keycode, int down) |
||
| 218 | { |
||
| 219 | if (type != EV_KEY) |
||
| 220 | return; |
||
| 221 | |||
| 222 | #ifdef DEBUG_KBD |
||
| 223 | printk(KERN_DEBUG "keyboard.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, keycode, down); |
||
| 224 | #endif |
||
| 225 | |||
| 226 | if (ktail != khead) { |
||
| 227 | kbuffer[khead].keycode = keycode; |
||
| 228 | kbuffer[khead].down = down; |
||
| 229 | khead = (khead+1) & KEYB_BUFFERMASK; |
||
| 230 | } |
||
| 231 | |||
| 522 | mauro | 232 | shark_kbd_exec(); |
| 519 | mauro | 233 | } |
| 234 | |||
| 235 | static struct input_handle *kbd_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id) |
||
| 236 | { |
||
| 237 | struct input_handle *handle; |
||
| 238 | int i; |
||
| 239 | |||
| 240 | for (i = KEY_RESERVED; i < BTN_MISC; i++) |
||
| 241 | if (test_bit(i, dev->keybit)) break; |
||
| 242 | |||
| 243 | if ((i == BTN_MISC) && !test_bit(EV_SND, dev->evbit)) |
||
| 244 | return NULL; |
||
| 245 | |||
| 246 | if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL))) |
||
| 247 | return NULL; |
||
| 248 | memset(handle, 0, sizeof(struct input_handle)); |
||
| 249 | |||
| 250 | handle->dev = dev; |
||
| 251 | handle->handler = handler; |
||
| 252 | handle->name = kbd_name; |
||
| 253 | |||
| 254 | input_open_device(handle); |
||
| 255 | #ifdef DEBUG_KBD |
||
| 256 | printk(KERN_DEBUG "keyboard.c: Connected device: \"%s\", %s\n", dev->name, dev->phys); |
||
| 257 | #endif |
||
| 258 | return handle; |
||
| 259 | } |
||
| 260 | |||
| 261 | static void kbd_disconnect(struct input_handle *handle) |
||
| 262 | { |
||
| 263 | #ifdef DEBUG_KBD |
||
| 264 | printk(KERN_DEBUG "keyboard.c: Disconnected device: %s\n", handle->dev->phys); |
||
| 265 | #endif |
||
| 266 | |||
| 267 | input_close_device(handle); |
||
| 268 | |||
| 269 | kfree(handle); |
||
| 270 | } |
||
| 271 | |||
| 272 | static struct input_device_id kbd_ids[] = { |
||
| 273 | { |
||
| 274 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
||
| 275 | .evbit = { BIT(EV_KEY) }, |
||
| 276 | }, |
||
| 277 | |||
| 278 | { |
||
| 279 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
||
| 280 | .evbit = { BIT(EV_SND) }, |
||
| 281 | }, |
||
| 282 | |||
| 283 | { }, /* Terminating entry */ |
||
| 284 | }; |
||
| 285 | |||
| 286 | MODULE_DEVICE_TABLE(input, kbd_ids); |
||
| 287 | |||
| 288 | static struct input_handler kbd_handler = { |
||
| 289 | .event = kbd_event, |
||
| 290 | .connect = kbd_connect, |
||
| 291 | .disconnect = kbd_disconnect, |
||
| 292 | .name = "kbd", |
||
| 293 | .id_table = kbd_ids, |
||
| 294 | }; |
||
| 295 | |||
| 296 | int __init kbd_init(void) |
||
| 297 | { |
||
| 298 | /* Initialize Buffer Variables */ |
||
| 299 | khead=1; |
||
| 300 | ktail=0; |
||
| 301 | |||
| 302 | input_register_handler(&kbd_handler); |
||
| 303 | |||
| 304 | return 0; |
||
| 305 | } |
||
| 306 | |||
| 307 | void __exit kbd_exit(void) |
||
| 308 | { |
||
| 309 | input_unregister_handler(&kbd_handler); |
||
| 310 | } |
||
| 311 | |||
| 312 | module_init(kbd_init); |
||
| 313 | module_exit(kbd_exit); |