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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de> | |
3 | */ | |
4 | ||
5 | /* | |
6 | * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik | |
7 | */ | |
8 | ||
9 | /* | |
10 | * DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations | |
11 | * and VAXstations, but can also be used on any standard RS232 with an | |
12 | * adaptor). | |
13 | * | |
14 | * DISCLAIMER: This works for _me_. If you break anything by using the | |
15 | * information given below, I will _not_ be liable! | |
16 | * | |
17 | * RJ10 pinout: To DE9: Or DB25: | |
d083e906 DT |
18 | * 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD) |
19 | * 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND) | |
20 | * 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD) | |
21 | * 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!! | |
1da177e4 LT |
22 | * |
23 | * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For | |
24 | * RJ10, it's like this: | |
25 | * | |
26 | * __=__ Hold the plug in front of you, cable downwards, | |
27 | * /___/| nose is hidden behind the plug. Now, pin 1 is at | |
28 | * |1234|| the left side, pin 4 at the right and 2 and 3 are | |
29 | * |IIII|| in between, of course:) | |
30 | * | || | |
31 | * |____|/ | |
32 | * || So the adaptor consists of three connected cables | |
33 | * || for data transmission (RxD and TxD) and signal ground. | |
34 | * Additionally, you have to get +12V from somewhere. | |
35 | * Most easily, you'll get that from a floppy or HDD power connector. | |
36 | * It's the yellow cable there (black is ground and red is +5V). | |
37 | * | |
38 | * The keyboard and all the commands it understands are documented in | |
39 | * "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This | |
40 | * document is LK201 specific, but LK401 is mostly compatible. It comes | |
41 | * up in LK201 mode and doesn't report any of the additional keys it | |
42 | * has. These need to be switched on with the LK_CMD_ENABLE_LK401 | |
43 | * command. You'll find this document (scanned .pdf file) on MANX, | |
44 | * a search engine specific to DEC documentation. Try | |
45 | * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1 | |
46 | */ | |
47 | ||
48 | /* | |
49 | * This program is free software; you can redistribute it and/or modify | |
50 | * it under the terms of the GNU General Public License as published by | |
51 | * the Free Software Foundation; either version 2 of the License, or | |
52 | * (at your option) any later version. | |
53 | * | |
54 | * This program is distributed in the hope that it will be useful, | |
55 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
56 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
57 | * GNU General Public License for more details. | |
58 | * | |
59 | * You should have received a copy of the GNU General Public License | |
60 | * along with this program; if not, write to the Free Software | |
61 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
1da177e4 LT |
62 | */ |
63 | ||
64 | #include <linux/delay.h> | |
65 | #include <linux/slab.h> | |
66 | #include <linux/module.h> | |
1da177e4 LT |
67 | #include <linux/interrupt.h> |
68 | #include <linux/init.h> | |
69 | #include <linux/input.h> | |
70 | #include <linux/serio.h> | |
71 | #include <linux/workqueue.h> | |
72 | ||
73 | #define DRIVER_DESC "LK keyboard driver" | |
74 | ||
75 | MODULE_AUTHOR ("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); | |
76 | MODULE_DESCRIPTION (DRIVER_DESC); | |
77 | MODULE_LICENSE ("GPL"); | |
78 | ||
79 | /* | |
80 | * Known parameters: | |
81 | * bell_volume | |
82 | * keyclick_volume | |
83 | * ctrlclick_volume | |
84 | * | |
85 | * Please notice that there's not yet an API to set these at runtime. | |
86 | */ | |
87 | static int bell_volume = 100; /* % */ | |
88 | module_param (bell_volume, int, 0); | |
89 | MODULE_PARM_DESC (bell_volume, "Bell volume (in %). default is 100%"); | |
90 | ||
91 | static int keyclick_volume = 100; /* % */ | |
92 | module_param (keyclick_volume, int, 0); | |
93 | MODULE_PARM_DESC (keyclick_volume, "Keyclick volume (in %), default is 100%"); | |
94 | ||
95 | static int ctrlclick_volume = 100; /* % */ | |
96 | module_param (ctrlclick_volume, int, 0); | |
97 | MODULE_PARM_DESC (ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); | |
98 | ||
3c42f0c3 | 99 | static int lk201_compose_is_alt; |
1da177e4 LT |
100 | module_param (lk201_compose_is_alt, int, 0); |
101 | MODULE_PARM_DESC (lk201_compose_is_alt, "If set non-zero, LK201' Compose key " | |
102 | "will act as an Alt key"); | |
103 | ||
104 | ||
105 | ||
106 | #undef LKKBD_DEBUG | |
107 | #ifdef LKKBD_DEBUG | |
108 | #define DBG(x...) printk (x) | |
109 | #else | |
110 | #define DBG(x...) do {} while (0) | |
111 | #endif | |
112 | ||
113 | /* LED control */ | |
114 | #define LK_LED_WAIT 0x81 | |
115 | #define LK_LED_COMPOSE 0x82 | |
116 | #define LK_LED_SHIFTLOCK 0x84 | |
117 | #define LK_LED_SCROLLLOCK 0x88 | |
118 | #define LK_CMD_LED_ON 0x13 | |
119 | #define LK_CMD_LED_OFF 0x11 | |
120 | ||
121 | /* Mode control */ | |
122 | #define LK_MODE_DOWN 0x80 | |
123 | #define LK_MODE_AUTODOWN 0x82 | |
124 | #define LK_MODE_UPDOWN 0x86 | |
125 | #define LK_CMD_SET_MODE(mode,div) ((mode) | ((div) << 3)) | |
126 | ||
127 | /* Misc commands */ | |
128 | #define LK_CMD_ENABLE_KEYCLICK 0x1b | |
129 | #define LK_CMD_DISABLE_KEYCLICK 0x99 | |
130 | #define LK_CMD_DISABLE_BELL 0xa1 | |
131 | #define LK_CMD_SOUND_BELL 0xa7 | |
132 | #define LK_CMD_ENABLE_BELL 0x23 | |
133 | #define LK_CMD_DISABLE_CTRCLICK 0xb9 | |
134 | #define LK_CMD_ENABLE_CTRCLICK 0xbb | |
135 | #define LK_CMD_SET_DEFAULTS 0xd3 | |
136 | #define LK_CMD_POWERCYCLE_RESET 0xfd | |
137 | #define LK_CMD_ENABLE_LK401 0xe9 | |
138 | #define LK_CMD_REQUEST_ID 0xab | |
139 | ||
140 | /* Misc responses from keyboard */ | |
141 | #define LK_STUCK_KEY 0x3d | |
142 | #define LK_SELFTEST_FAILED 0x3e | |
143 | #define LK_ALL_KEYS_UP 0xb3 | |
144 | #define LK_METRONOME 0xb4 | |
145 | #define LK_OUTPUT_ERROR 0xb5 | |
146 | #define LK_INPUT_ERROR 0xb6 | |
147 | #define LK_KBD_LOCKED 0xb7 | |
148 | #define LK_KBD_TEST_MODE_ACK 0xb8 | |
149 | #define LK_PREFIX_KEY_DOWN 0xb9 | |
150 | #define LK_MODE_CHANGE_ACK 0xba | |
151 | #define LK_RESPONSE_RESERVED 0xbb | |
152 | ||
153 | #define LK_NUM_KEYCODES 256 | |
154 | #define LK_NUM_IGNORE_BYTES 6 | |
155 | typedef u_int16_t lk_keycode_t; | |
156 | ||
157 | ||
158 | ||
159 | static lk_keycode_t lkkbd_keycode[LK_NUM_KEYCODES] = { | |
160 | [0x56] = KEY_F1, | |
161 | [0x57] = KEY_F2, | |
162 | [0x58] = KEY_F3, | |
163 | [0x59] = KEY_F4, | |
164 | [0x5a] = KEY_F5, | |
165 | [0x64] = KEY_F6, | |
166 | [0x65] = KEY_F7, | |
167 | [0x66] = KEY_F8, | |
168 | [0x67] = KEY_F9, | |
169 | [0x68] = KEY_F10, | |
170 | [0x71] = KEY_F11, | |
171 | [0x72] = KEY_F12, | |
172 | [0x73] = KEY_F13, | |
173 | [0x74] = KEY_F14, | |
174 | [0x7c] = KEY_F15, | |
175 | [0x7d] = KEY_F16, | |
176 | [0x80] = KEY_F17, | |
177 | [0x81] = KEY_F18, | |
178 | [0x82] = KEY_F19, | |
179 | [0x83] = KEY_F20, | |
180 | [0x8a] = KEY_FIND, | |
181 | [0x8b] = KEY_INSERT, | |
182 | [0x8c] = KEY_DELETE, | |
183 | [0x8d] = KEY_SELECT, | |
184 | [0x8e] = KEY_PAGEUP, | |
185 | [0x8f] = KEY_PAGEDOWN, | |
186 | [0x92] = KEY_KP0, | |
187 | [0x94] = KEY_KPDOT, | |
188 | [0x95] = KEY_KPENTER, | |
189 | [0x96] = KEY_KP1, | |
190 | [0x97] = KEY_KP2, | |
191 | [0x98] = KEY_KP3, | |
192 | [0x99] = KEY_KP4, | |
193 | [0x9a] = KEY_KP5, | |
194 | [0x9b] = KEY_KP6, | |
195 | [0x9c] = KEY_KPCOMMA, | |
196 | [0x9d] = KEY_KP7, | |
197 | [0x9e] = KEY_KP8, | |
198 | [0x9f] = KEY_KP9, | |
199 | [0xa0] = KEY_KPMINUS, | |
200 | [0xa1] = KEY_PROG1, | |
201 | [0xa2] = KEY_PROG2, | |
202 | [0xa3] = KEY_PROG3, | |
203 | [0xa4] = KEY_PROG4, | |
204 | [0xa7] = KEY_LEFT, | |
205 | [0xa8] = KEY_RIGHT, | |
206 | [0xa9] = KEY_DOWN, | |
207 | [0xaa] = KEY_UP, | |
208 | [0xab] = KEY_RIGHTSHIFT, | |
209 | [0xac] = KEY_LEFTALT, | |
210 | [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ | |
211 | [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ | |
212 | [0xaf] = KEY_LEFTCTRL, | |
213 | [0xb0] = KEY_CAPSLOCK, | |
214 | [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ | |
215 | [0xb2] = KEY_RIGHTALT, | |
216 | [0xbc] = KEY_BACKSPACE, | |
217 | [0xbd] = KEY_ENTER, | |
218 | [0xbe] = KEY_TAB, | |
219 | [0xbf] = KEY_ESC, | |
220 | [0xc0] = KEY_1, | |
221 | [0xc1] = KEY_Q, | |
222 | [0xc2] = KEY_A, | |
223 | [0xc3] = KEY_Z, | |
224 | [0xc5] = KEY_2, | |
225 | [0xc6] = KEY_W, | |
226 | [0xc7] = KEY_S, | |
227 | [0xc8] = KEY_X, | |
228 | [0xc9] = KEY_102ND, | |
229 | [0xcb] = KEY_3, | |
230 | [0xcc] = KEY_E, | |
231 | [0xcd] = KEY_D, | |
232 | [0xce] = KEY_C, | |
233 | [0xd0] = KEY_4, | |
234 | [0xd1] = KEY_R, | |
235 | [0xd2] = KEY_F, | |
236 | [0xd3] = KEY_V, | |
237 | [0xd4] = KEY_SPACE, | |
238 | [0xd6] = KEY_5, | |
239 | [0xd7] = KEY_T, | |
240 | [0xd8] = KEY_G, | |
241 | [0xd9] = KEY_B, | |
242 | [0xdb] = KEY_6, | |
243 | [0xdc] = KEY_Y, | |
244 | [0xdd] = KEY_H, | |
245 | [0xde] = KEY_N, | |
246 | [0xe0] = KEY_7, | |
247 | [0xe1] = KEY_U, | |
248 | [0xe2] = KEY_J, | |
249 | [0xe3] = KEY_M, | |
250 | [0xe5] = KEY_8, | |
251 | [0xe6] = KEY_I, | |
252 | [0xe7] = KEY_K, | |
253 | [0xe8] = KEY_COMMA, | |
254 | [0xea] = KEY_9, | |
255 | [0xeb] = KEY_O, | |
256 | [0xec] = KEY_L, | |
257 | [0xed] = KEY_DOT, | |
258 | [0xef] = KEY_0, | |
259 | [0xf0] = KEY_P, | |
260 | [0xf2] = KEY_SEMICOLON, | |
261 | [0xf3] = KEY_SLASH, | |
262 | [0xf5] = KEY_EQUAL, | |
263 | [0xf6] = KEY_RIGHTBRACE, | |
264 | [0xf7] = KEY_BACKSLASH, | |
265 | [0xf9] = KEY_MINUS, | |
266 | [0xfa] = KEY_LEFTBRACE, | |
267 | [0xfb] = KEY_APOSTROPHE, | |
268 | }; | |
269 | ||
0aeafa77 JBG |
270 | #define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ |
271 | if (test_bit (LED, (LK)->dev->led)) \ | |
272 | VAR_ON |= BITS; \ | |
273 | else \ | |
274 | VAR_OFF |= BITS; \ | |
1da177e4 LT |
275 | } while (0) |
276 | ||
277 | /* | |
278 | * Per-keyboard data | |
279 | */ | |
280 | struct lkkbd { | |
281 | lk_keycode_t keycode[LK_NUM_KEYCODES]; | |
282 | int ignore_bytes; | |
283 | unsigned char id[LK_NUM_IGNORE_BYTES]; | |
3c42f0c3 | 284 | struct input_dev *dev; |
1da177e4 LT |
285 | struct serio *serio; |
286 | struct work_struct tq; | |
287 | char name[64]; | |
288 | char phys[32]; | |
289 | char type; | |
290 | int bell_volume; | |
291 | int keyclick_volume; | |
292 | int ctrlclick_volume; | |
293 | }; | |
294 | ||
0aeafa77 JBG |
295 | #ifdef LKKBD_DEBUG |
296 | /* | |
297 | * Responses from the keyboard and mapping back to their names. | |
298 | */ | |
299 | static struct { | |
300 | unsigned char value; | |
301 | unsigned char *name; | |
302 | } lk_response[] = { | |
303 | #define RESPONSE(x) { .value = (x), .name = #x, } | |
304 | RESPONSE (LK_STUCK_KEY), | |
305 | RESPONSE (LK_SELFTEST_FAILED), | |
306 | RESPONSE (LK_ALL_KEYS_UP), | |
307 | RESPONSE (LK_METRONOME), | |
308 | RESPONSE (LK_OUTPUT_ERROR), | |
309 | RESPONSE (LK_INPUT_ERROR), | |
310 | RESPONSE (LK_KBD_LOCKED), | |
311 | RESPONSE (LK_KBD_TEST_MODE_ACK), | |
312 | RESPONSE (LK_PREFIX_KEY_DOWN), | |
313 | RESPONSE (LK_MODE_CHANGE_ACK), | |
314 | RESPONSE (LK_RESPONSE_RESERVED), | |
315 | #undef RESPONSE | |
316 | }; | |
317 | ||
318 | static unsigned char * | |
319 | response_name (unsigned char value) | |
320 | { | |
321 | int i; | |
322 | ||
323 | for (i = 0; i < ARRAY_SIZE (lk_response); i++) | |
324 | if (lk_response[i].value == value) | |
325 | return lk_response[i].name; | |
326 | ||
327 | return "<unknown>"; | |
328 | } | |
329 | #endif /* LKKBD_DEBUG */ | |
330 | ||
1da177e4 LT |
331 | /* |
332 | * Calculate volume parameter byte for a given volume. | |
333 | */ | |
334 | static unsigned char | |
335 | volume_to_hw (int volume_percent) | |
336 | { | |
337 | unsigned char ret = 0; | |
338 | ||
339 | if (volume_percent < 0) | |
340 | volume_percent = 0; | |
341 | if (volume_percent > 100) | |
342 | volume_percent = 100; | |
343 | ||
344 | if (volume_percent >= 0) | |
345 | ret = 7; | |
346 | if (volume_percent >= 13) /* 12.5 */ | |
347 | ret = 6; | |
348 | if (volume_percent >= 25) | |
349 | ret = 5; | |
350 | if (volume_percent >= 38) /* 37.5 */ | |
351 | ret = 4; | |
352 | if (volume_percent >= 50) | |
353 | ret = 3; | |
354 | if (volume_percent >= 63) /* 62.5 */ | |
355 | ret = 2; /* This is the default volume */ | |
356 | if (volume_percent >= 75) | |
357 | ret = 1; | |
358 | if (volume_percent >= 88) /* 87.5 */ | |
359 | ret = 0; | |
360 | ||
361 | ret |= 0x80; | |
362 | ||
363 | return ret; | |
364 | } | |
365 | ||
366 | static void | |
367 | lkkbd_detection_done (struct lkkbd *lk) | |
368 | { | |
369 | int i; | |
370 | ||
371 | /* | |
372 | * Reset setting for Compose key. Let Compose be KEY_COMPOSE. | |
373 | */ | |
374 | lk->keycode[0xb1] = KEY_COMPOSE; | |
375 | ||
376 | /* | |
377 | * Print keyboard name and modify Compose=Alt on user's request. | |
378 | */ | |
379 | switch (lk->id[4]) { | |
380 | case 1: | |
ea08c6fa DT |
381 | strlcpy (lk->name, "DEC LK201 keyboard", |
382 | sizeof (lk->name)); | |
1da177e4 LT |
383 | |
384 | if (lk201_compose_is_alt) | |
385 | lk->keycode[0xb1] = KEY_LEFTALT; | |
386 | break; | |
387 | ||
388 | case 2: | |
ea08c6fa DT |
389 | strlcpy (lk->name, "DEC LK401 keyboard", |
390 | sizeof (lk->name)); | |
1da177e4 LT |
391 | break; |
392 | ||
393 | default: | |
ea08c6fa DT |
394 | strlcpy (lk->name, "Unknown DEC keyboard", |
395 | sizeof (lk->name)); | |
1da177e4 LT |
396 | printk (KERN_ERR "lkkbd: keyboard on %s is unknown, " |
397 | "please report to Jan-Benedict Glaw " | |
398 | "<jbglaw@lug-owl.de>\n", lk->phys); | |
399 | printk (KERN_ERR "lkkbd: keyboard ID'ed as:"); | |
400 | for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) | |
401 | printk (" 0x%02x", lk->id[i]); | |
402 | printk ("\n"); | |
403 | break; | |
404 | } | |
405 | printk (KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", | |
406 | lk->phys, lk->name); | |
407 | ||
408 | /* | |
409 | * Report errors during keyboard boot-up. | |
410 | */ | |
411 | switch (lk->id[2]) { | |
412 | case 0x00: | |
413 | /* All okay */ | |
414 | break; | |
415 | ||
416 | case LK_STUCK_KEY: | |
417 | printk (KERN_ERR "lkkbd: Stuck key on keyboard at " | |
418 | "%s\n", lk->phys); | |
419 | break; | |
420 | ||
421 | case LK_SELFTEST_FAILED: | |
422 | printk (KERN_ERR "lkkbd: Selftest failed on keyboard " | |
423 | "at %s, keyboard may not work " | |
424 | "properly\n", lk->phys); | |
425 | break; | |
426 | ||
427 | default: | |
428 | printk (KERN_ERR "lkkbd: Unknown error %02x on " | |
429 | "keyboard at %s\n", lk->id[2], | |
430 | lk->phys); | |
431 | break; | |
432 | } | |
433 | ||
434 | /* | |
435 | * Try to hint user if there's a stuck key. | |
436 | */ | |
437 | if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) | |
438 | printk (KERN_ERR "Scancode of stuck key is 0x%02x, keycode " | |
439 | "is 0x%04x\n", lk->id[3], | |
440 | lk->keycode[lk->id[3]]); | |
441 | ||
442 | return; | |
443 | } | |
444 | ||
445 | /* | |
446 | * lkkbd_interrupt() is called by the low level driver when a character | |
447 | * is received. | |
448 | */ | |
449 | static irqreturn_t | |
7d12e780 | 450 | lkkbd_interrupt (struct serio *serio, unsigned char data, unsigned int flags) |
1da177e4 LT |
451 | { |
452 | struct lkkbd *lk = serio_get_drvdata (serio); | |
453 | int i; | |
454 | ||
455 | DBG (KERN_INFO "Got byte 0x%02x\n", data); | |
456 | ||
457 | if (lk->ignore_bytes > 0) { | |
3c42f0c3 | 458 | DBG (KERN_INFO "Ignoring a byte on %s\n", lk->name); |
1da177e4 LT |
459 | lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; |
460 | ||
461 | if (lk->ignore_bytes == 0) | |
462 | lkkbd_detection_done (lk); | |
463 | ||
464 | return IRQ_HANDLED; | |
465 | } | |
466 | ||
467 | switch (data) { | |
468 | case LK_ALL_KEYS_UP: | |
1da177e4 LT |
469 | for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++) |
470 | if (lk->keycode[i] != KEY_RESERVED) | |
3c42f0c3 DT |
471 | input_report_key (lk->dev, lk->keycode[i], 0); |
472 | input_sync (lk->dev); | |
1da177e4 | 473 | break; |
0aeafa77 JBG |
474 | |
475 | case 0x01: | |
476 | DBG (KERN_INFO "Got 0x01, scheduling re-initialization\n"); | |
477 | lk->ignore_bytes = LK_NUM_IGNORE_BYTES; | |
478 | lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; | |
479 | schedule_work (&lk->tq); | |
1da177e4 | 480 | break; |
0aeafa77 JBG |
481 | |
482 | case LK_METRONOME: | |
1da177e4 | 483 | case LK_OUTPUT_ERROR: |
1da177e4 | 484 | case LK_INPUT_ERROR: |
1da177e4 | 485 | case LK_KBD_LOCKED: |
1da177e4 | 486 | case LK_KBD_TEST_MODE_ACK: |
1da177e4 | 487 | case LK_PREFIX_KEY_DOWN: |
1da177e4 | 488 | case LK_MODE_CHANGE_ACK: |
1da177e4 | 489 | case LK_RESPONSE_RESERVED: |
0aeafa77 JBG |
490 | DBG (KERN_INFO "Got %s and don't know how to handle...\n", |
491 | response_name (data)); | |
1da177e4 LT |
492 | break; |
493 | ||
494 | default: | |
495 | if (lk->keycode[data] != KEY_RESERVED) { | |
3c42f0c3 DT |
496 | if (!test_bit (lk->keycode[data], lk->dev->key)) |
497 | input_report_key (lk->dev, lk->keycode[data], 1); | |
1da177e4 | 498 | else |
3c42f0c3 DT |
499 | input_report_key (lk->dev, lk->keycode[data], 0); |
500 | input_sync (lk->dev); | |
1da177e4 LT |
501 | } else |
502 | printk (KERN_WARNING "%s: Unknown key with " | |
503 | "scancode 0x%02x on %s.\n", | |
504 | __FILE__, data, lk->name); | |
505 | } | |
506 | ||
507 | return IRQ_HANDLED; | |
508 | } | |
509 | ||
510 | /* | |
511 | * lkkbd_event() handles events from the input module. | |
512 | */ | |
513 | static int | |
514 | lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code, | |
515 | int value) | |
516 | { | |
b356872f | 517 | struct lkkbd *lk = input_get_drvdata (dev); |
1da177e4 LT |
518 | unsigned char leds_on = 0; |
519 | unsigned char leds_off = 0; | |
520 | ||
521 | switch (type) { | |
522 | case EV_LED: | |
0aeafa77 JBG |
523 | CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); |
524 | CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); | |
525 | CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); | |
526 | CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); | |
1da177e4 LT |
527 | if (leds_on != 0) { |
528 | lk->serio->write (lk->serio, LK_CMD_LED_ON); | |
529 | lk->serio->write (lk->serio, leds_on); | |
530 | } | |
531 | if (leds_off != 0) { | |
532 | lk->serio->write (lk->serio, LK_CMD_LED_OFF); | |
533 | lk->serio->write (lk->serio, leds_off); | |
534 | } | |
535 | return 0; | |
536 | ||
537 | case EV_SND: | |
538 | switch (code) { | |
539 | case SND_CLICK: | |
540 | if (value == 0) { | |
ea3e6c59 | 541 | DBG ("%s: Deactivating key clicks\n", __func__); |
1da177e4 LT |
542 | lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); |
543 | lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); | |
544 | } else { | |
ea3e6c59 | 545 | DBG ("%s: Activating key clicks\n", __func__); |
1da177e4 LT |
546 | lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); |
547 | lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); | |
548 | lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); | |
549 | lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); | |
550 | } | |
551 | return 0; | |
552 | ||
553 | case SND_BELL: | |
554 | if (value != 0) | |
555 | lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | break; | |
560 | ||
561 | default: | |
562 | printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n", | |
ea3e6c59 | 563 | __func__, type, code, value); |
1da177e4 LT |
564 | } |
565 | ||
566 | return -1; | |
567 | } | |
568 | ||
569 | /* | |
570 | * lkkbd_reinit() sets leds and beeps to a state the computer remembers they | |
571 | * were in. | |
572 | */ | |
573 | static void | |
c4028958 | 574 | lkkbd_reinit (struct work_struct *work) |
1da177e4 | 575 | { |
c4028958 | 576 | struct lkkbd *lk = container_of(work, struct lkkbd, tq); |
1da177e4 LT |
577 | int division; |
578 | unsigned char leds_on = 0; | |
579 | unsigned char leds_off = 0; | |
580 | ||
581 | /* Ask for ID */ | |
582 | lk->serio->write (lk->serio, LK_CMD_REQUEST_ID); | |
583 | ||
584 | /* Reset parameters */ | |
585 | lk->serio->write (lk->serio, LK_CMD_SET_DEFAULTS); | |
586 | ||
587 | /* Set LEDs */ | |
0aeafa77 JBG |
588 | CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); |
589 | CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); | |
590 | CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); | |
591 | CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); | |
1da177e4 LT |
592 | if (leds_on != 0) { |
593 | lk->serio->write (lk->serio, LK_CMD_LED_ON); | |
594 | lk->serio->write (lk->serio, leds_on); | |
595 | } | |
596 | if (leds_off != 0) { | |
597 | lk->serio->write (lk->serio, LK_CMD_LED_OFF); | |
598 | lk->serio->write (lk->serio, leds_off); | |
599 | } | |
600 | ||
601 | /* | |
602 | * Try to activate extended LK401 mode. This command will | |
603 | * only work with a LK401 keyboard and grants access to | |
604 | * LAlt, RAlt, RCompose and RShift. | |
605 | */ | |
606 | lk->serio->write (lk->serio, LK_CMD_ENABLE_LK401); | |
607 | ||
608 | /* Set all keys to UPDOWN mode */ | |
609 | for (division = 1; division <= 14; division++) | |
610 | lk->serio->write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN, | |
611 | division)); | |
612 | ||
613 | /* Enable bell and set volume */ | |
614 | lk->serio->write (lk->serio, LK_CMD_ENABLE_BELL); | |
615 | lk->serio->write (lk->serio, volume_to_hw (lk->bell_volume)); | |
616 | ||
617 | /* Enable/disable keyclick (and possibly set volume) */ | |
3c42f0c3 | 618 | if (test_bit (SND_CLICK, lk->dev->snd)) { |
1da177e4 LT |
619 | lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); |
620 | lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); | |
621 | lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); | |
622 | lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); | |
623 | } else { | |
624 | lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); | |
625 | lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); | |
626 | } | |
627 | ||
628 | /* Sound the bell if needed */ | |
3c42f0c3 | 629 | if (test_bit (SND_BELL, lk->dev->snd)) |
1da177e4 LT |
630 | lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); |
631 | } | |
632 | ||
633 | /* | |
634 | * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. | |
635 | */ | |
636 | static int | |
637 | lkkbd_connect (struct serio *serio, struct serio_driver *drv) | |
638 | { | |
639 | struct lkkbd *lk; | |
3c42f0c3 | 640 | struct input_dev *input_dev; |
1da177e4 LT |
641 | int i; |
642 | int err; | |
643 | ||
3c42f0c3 DT |
644 | lk = kzalloc (sizeof (struct lkkbd), GFP_KERNEL); |
645 | input_dev = input_allocate_device (); | |
646 | if (!lk || !input_dev) { | |
647 | err = -ENOMEM; | |
2b03b60e | 648 | goto fail1; |
3c42f0c3 | 649 | } |
1da177e4 LT |
650 | |
651 | lk->serio = serio; | |
3c42f0c3 | 652 | lk->dev = input_dev; |
c4028958 | 653 | INIT_WORK (&lk->tq, lkkbd_reinit); |
1da177e4 LT |
654 | lk->bell_volume = bell_volume; |
655 | lk->keyclick_volume = keyclick_volume; | |
656 | lk->ctrlclick_volume = ctrlclick_volume; | |
3c42f0c3 | 657 | memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES); |
1da177e4 | 658 | |
3c42f0c3 DT |
659 | strlcpy (lk->name, "DEC LK keyboard", sizeof(lk->name)); |
660 | snprintf (lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); | |
661 | ||
662 | input_dev->name = lk->name; | |
663 | input_dev->phys = lk->phys; | |
664 | input_dev->id.bustype = BUS_RS232; | |
665 | input_dev->id.vendor = SERIO_LKKBD; | |
666 | input_dev->id.product = 0; | |
667 | input_dev->id.version = 0x0100; | |
469ba4df | 668 | input_dev->dev.parent = &serio->dev; |
3c42f0c3 | 669 | input_dev->event = lkkbd_event; |
b356872f DT |
670 | |
671 | input_set_drvdata (input_dev, lk); | |
3c42f0c3 DT |
672 | |
673 | set_bit (EV_KEY, input_dev->evbit); | |
674 | set_bit (EV_LED, input_dev->evbit); | |
675 | set_bit (EV_SND, input_dev->evbit); | |
676 | set_bit (EV_REP, input_dev->evbit); | |
677 | set_bit (LED_CAPSL, input_dev->ledbit); | |
678 | set_bit (LED_SLEEP, input_dev->ledbit); | |
679 | set_bit (LED_COMPOSE, input_dev->ledbit); | |
680 | set_bit (LED_SCROLLL, input_dev->ledbit); | |
681 | set_bit (SND_BELL, input_dev->sndbit); | |
682 | set_bit (SND_CLICK, input_dev->sndbit); | |
683 | ||
684 | input_dev->keycode = lk->keycode; | |
685 | input_dev->keycodesize = sizeof (lk_keycode_t); | |
686 | input_dev->keycodemax = LK_NUM_KEYCODES; | |
687 | for (i = 0; i < LK_NUM_KEYCODES; i++) | |
688 | set_bit (lk->keycode[i], input_dev->keybit); | |
1da177e4 LT |
689 | |
690 | serio_set_drvdata (serio, lk); | |
691 | ||
692 | err = serio_open (serio, drv); | |
3c42f0c3 | 693 | if (err) |
2b03b60e DT |
694 | goto fail2; |
695 | ||
696 | err = input_register_device (lk->dev); | |
697 | if (err) | |
698 | goto fail3; | |
1da177e4 | 699 | |
1da177e4 LT |
700 | lk->serio->write (lk->serio, LK_CMD_POWERCYCLE_RESET); |
701 | ||
702 | return 0; | |
3c42f0c3 | 703 | |
2b03b60e DT |
704 | fail3: serio_close (serio); |
705 | fail2: serio_set_drvdata (serio, NULL); | |
706 | fail1: input_free_device (input_dev); | |
3c42f0c3 DT |
707 | kfree (lk); |
708 | return err; | |
1da177e4 LT |
709 | } |
710 | ||
711 | /* | |
712 | * lkkbd_disconnect() unregisters and closes behind us. | |
713 | */ | |
714 | static void | |
715 | lkkbd_disconnect (struct serio *serio) | |
716 | { | |
717 | struct lkkbd *lk = serio_get_drvdata (serio); | |
718 | ||
3c42f0c3 DT |
719 | input_get_device (lk->dev); |
720 | input_unregister_device (lk->dev); | |
1da177e4 LT |
721 | serio_close (serio); |
722 | serio_set_drvdata (serio, NULL); | |
3c42f0c3 | 723 | input_put_device (lk->dev); |
1da177e4 LT |
724 | kfree (lk); |
725 | } | |
726 | ||
727 | static struct serio_device_id lkkbd_serio_ids[] = { | |
728 | { | |
729 | .type = SERIO_RS232, | |
730 | .proto = SERIO_LKKBD, | |
731 | .id = SERIO_ANY, | |
732 | .extra = SERIO_ANY, | |
733 | }, | |
734 | { 0 } | |
735 | }; | |
736 | ||
737 | MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); | |
738 | ||
739 | static struct serio_driver lkkbd_drv = { | |
740 | .driver = { | |
741 | .name = "lkkbd", | |
742 | }, | |
743 | .description = DRIVER_DESC, | |
744 | .id_table = lkkbd_serio_ids, | |
745 | .connect = lkkbd_connect, | |
746 | .disconnect = lkkbd_disconnect, | |
747 | .interrupt = lkkbd_interrupt, | |
748 | }; | |
749 | ||
750 | /* | |
751 | * The functions for insering/removing us as a module. | |
752 | */ | |
753 | static int __init | |
754 | lkkbd_init (void) | |
755 | { | |
153a9df0 | 756 | return serio_register_driver(&lkkbd_drv); |
1da177e4 LT |
757 | } |
758 | ||
759 | static void __exit | |
760 | lkkbd_exit (void) | |
761 | { | |
762 | serio_unregister_driver(&lkkbd_drv); | |
763 | } | |
764 | ||
765 | module_init (lkkbd_init); | |
766 | module_exit (lkkbd_exit); | |
767 |