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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 | ||
7d3fadd1 DT |
75 | MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); |
76 | MODULE_DESCRIPTION(DRIVER_DESC); | |
77 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
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; /* % */ | |
7d3fadd1 DT |
88 | module_param(bell_volume, int, 0); |
89 | MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%"); | |
1da177e4 LT |
90 | |
91 | static int keyclick_volume = 100; /* % */ | |
7d3fadd1 DT |
92 | module_param(keyclick_volume, int, 0); |
93 | MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%"); | |
1da177e4 LT |
94 | |
95 | static int ctrlclick_volume = 100; /* % */ | |
7d3fadd1 DT |
96 | module_param(ctrlclick_volume, int, 0); |
97 | MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); | |
1da177e4 | 98 | |
3c42f0c3 | 99 | static int lk201_compose_is_alt; |
7d3fadd1 DT |
100 | module_param(lk201_compose_is_alt, int, 0); |
101 | MODULE_PARM_DESC(lk201_compose_is_alt, | |
102 | "If set non-zero, LK201' Compose key will act as an Alt key"); | |
1da177e4 LT |
103 | |
104 | ||
105 | ||
106 | #undef LKKBD_DEBUG | |
107 | #ifdef LKKBD_DEBUG | |
7d3fadd1 | 108 | #define DBG(x...) printk(x) |
1da177e4 LT |
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 | |
7d3fadd1 | 125 | #define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3)) |
1da177e4 LT |
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 | |
1da177e4 | 155 | |
7d3fadd1 | 156 | static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = { |
1da177e4 LT |
157 | [0x56] = KEY_F1, |
158 | [0x57] = KEY_F2, | |
159 | [0x58] = KEY_F3, | |
160 | [0x59] = KEY_F4, | |
161 | [0x5a] = KEY_F5, | |
162 | [0x64] = KEY_F6, | |
163 | [0x65] = KEY_F7, | |
164 | [0x66] = KEY_F8, | |
165 | [0x67] = KEY_F9, | |
166 | [0x68] = KEY_F10, | |
167 | [0x71] = KEY_F11, | |
168 | [0x72] = KEY_F12, | |
169 | [0x73] = KEY_F13, | |
170 | [0x74] = KEY_F14, | |
171 | [0x7c] = KEY_F15, | |
172 | [0x7d] = KEY_F16, | |
173 | [0x80] = KEY_F17, | |
174 | [0x81] = KEY_F18, | |
175 | [0x82] = KEY_F19, | |
176 | [0x83] = KEY_F20, | |
177 | [0x8a] = KEY_FIND, | |
178 | [0x8b] = KEY_INSERT, | |
179 | [0x8c] = KEY_DELETE, | |
180 | [0x8d] = KEY_SELECT, | |
181 | [0x8e] = KEY_PAGEUP, | |
182 | [0x8f] = KEY_PAGEDOWN, | |
183 | [0x92] = KEY_KP0, | |
184 | [0x94] = KEY_KPDOT, | |
185 | [0x95] = KEY_KPENTER, | |
186 | [0x96] = KEY_KP1, | |
187 | [0x97] = KEY_KP2, | |
188 | [0x98] = KEY_KP3, | |
189 | [0x99] = KEY_KP4, | |
190 | [0x9a] = KEY_KP5, | |
191 | [0x9b] = KEY_KP6, | |
192 | [0x9c] = KEY_KPCOMMA, | |
193 | [0x9d] = KEY_KP7, | |
194 | [0x9e] = KEY_KP8, | |
195 | [0x9f] = KEY_KP9, | |
196 | [0xa0] = KEY_KPMINUS, | |
197 | [0xa1] = KEY_PROG1, | |
198 | [0xa2] = KEY_PROG2, | |
199 | [0xa3] = KEY_PROG3, | |
200 | [0xa4] = KEY_PROG4, | |
201 | [0xa7] = KEY_LEFT, | |
202 | [0xa8] = KEY_RIGHT, | |
203 | [0xa9] = KEY_DOWN, | |
204 | [0xaa] = KEY_UP, | |
205 | [0xab] = KEY_RIGHTSHIFT, | |
206 | [0xac] = KEY_LEFTALT, | |
207 | [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ | |
208 | [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ | |
209 | [0xaf] = KEY_LEFTCTRL, | |
210 | [0xb0] = KEY_CAPSLOCK, | |
211 | [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ | |
212 | [0xb2] = KEY_RIGHTALT, | |
213 | [0xbc] = KEY_BACKSPACE, | |
214 | [0xbd] = KEY_ENTER, | |
215 | [0xbe] = KEY_TAB, | |
216 | [0xbf] = KEY_ESC, | |
217 | [0xc0] = KEY_1, | |
218 | [0xc1] = KEY_Q, | |
219 | [0xc2] = KEY_A, | |
220 | [0xc3] = KEY_Z, | |
221 | [0xc5] = KEY_2, | |
222 | [0xc6] = KEY_W, | |
223 | [0xc7] = KEY_S, | |
224 | [0xc8] = KEY_X, | |
225 | [0xc9] = KEY_102ND, | |
226 | [0xcb] = KEY_3, | |
227 | [0xcc] = KEY_E, | |
228 | [0xcd] = KEY_D, | |
229 | [0xce] = KEY_C, | |
230 | [0xd0] = KEY_4, | |
231 | [0xd1] = KEY_R, | |
232 | [0xd2] = KEY_F, | |
233 | [0xd3] = KEY_V, | |
234 | [0xd4] = KEY_SPACE, | |
235 | [0xd6] = KEY_5, | |
236 | [0xd7] = KEY_T, | |
237 | [0xd8] = KEY_G, | |
238 | [0xd9] = KEY_B, | |
239 | [0xdb] = KEY_6, | |
240 | [0xdc] = KEY_Y, | |
241 | [0xdd] = KEY_H, | |
242 | [0xde] = KEY_N, | |
243 | [0xe0] = KEY_7, | |
244 | [0xe1] = KEY_U, | |
245 | [0xe2] = KEY_J, | |
246 | [0xe3] = KEY_M, | |
247 | [0xe5] = KEY_8, | |
248 | [0xe6] = KEY_I, | |
249 | [0xe7] = KEY_K, | |
250 | [0xe8] = KEY_COMMA, | |
251 | [0xea] = KEY_9, | |
252 | [0xeb] = KEY_O, | |
253 | [0xec] = KEY_L, | |
254 | [0xed] = KEY_DOT, | |
255 | [0xef] = KEY_0, | |
256 | [0xf0] = KEY_P, | |
257 | [0xf2] = KEY_SEMICOLON, | |
258 | [0xf3] = KEY_SLASH, | |
259 | [0xf5] = KEY_EQUAL, | |
260 | [0xf6] = KEY_RIGHTBRACE, | |
261 | [0xf7] = KEY_BACKSLASH, | |
262 | [0xf9] = KEY_MINUS, | |
263 | [0xfa] = KEY_LEFTBRACE, | |
264 | [0xfb] = KEY_APOSTROPHE, | |
265 | }; | |
266 | ||
0aeafa77 | 267 | #define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ |
7d3fadd1 | 268 | if (test_bit(LED, (LK)->dev->led)) \ |
0aeafa77 JBG |
269 | VAR_ON |= BITS; \ |
270 | else \ | |
271 | VAR_OFF |= BITS; \ | |
1da177e4 LT |
272 | } while (0) |
273 | ||
274 | /* | |
275 | * Per-keyboard data | |
276 | */ | |
277 | struct lkkbd { | |
7d3fadd1 | 278 | unsigned short keycode[LK_NUM_KEYCODES]; |
1da177e4 LT |
279 | int ignore_bytes; |
280 | unsigned char id[LK_NUM_IGNORE_BYTES]; | |
3c42f0c3 | 281 | struct input_dev *dev; |
1da177e4 LT |
282 | struct serio *serio; |
283 | struct work_struct tq; | |
284 | char name[64]; | |
285 | char phys[32]; | |
286 | char type; | |
287 | int bell_volume; | |
288 | int keyclick_volume; | |
289 | int ctrlclick_volume; | |
290 | }; | |
291 | ||
0aeafa77 JBG |
292 | #ifdef LKKBD_DEBUG |
293 | /* | |
294 | * Responses from the keyboard and mapping back to their names. | |
295 | */ | |
296 | static struct { | |
297 | unsigned char value; | |
298 | unsigned char *name; | |
299 | } lk_response[] = { | |
300 | #define RESPONSE(x) { .value = (x), .name = #x, } | |
7d3fadd1 DT |
301 | RESPONSE(LK_STUCK_KEY), |
302 | RESPONSE(LK_SELFTEST_FAILED), | |
303 | RESPONSE(LK_ALL_KEYS_UP), | |
304 | RESPONSE(LK_METRONOME), | |
305 | RESPONSE(LK_OUTPUT_ERROR), | |
306 | RESPONSE(LK_INPUT_ERROR), | |
307 | RESPONSE(LK_KBD_LOCKED), | |
308 | RESPONSE(LK_KBD_TEST_MODE_ACK), | |
309 | RESPONSE(LK_PREFIX_KEY_DOWN), | |
310 | RESPONSE(LK_MODE_CHANGE_ACK), | |
311 | RESPONSE(LK_RESPONSE_RESERVED), | |
0aeafa77 JBG |
312 | #undef RESPONSE |
313 | }; | |
314 | ||
7d3fadd1 | 315 | static unsigned char *response_name(unsigned char value) |
0aeafa77 JBG |
316 | { |
317 | int i; | |
318 | ||
7d3fadd1 | 319 | for (i = 0; i < ARRAY_SIZE(lk_response); i++) |
0aeafa77 JBG |
320 | if (lk_response[i].value == value) |
321 | return lk_response[i].name; | |
322 | ||
323 | return "<unknown>"; | |
324 | } | |
325 | #endif /* LKKBD_DEBUG */ | |
326 | ||
1da177e4 LT |
327 | /* |
328 | * Calculate volume parameter byte for a given volume. | |
329 | */ | |
7d3fadd1 | 330 | static unsigned char volume_to_hw(int volume_percent) |
1da177e4 LT |
331 | { |
332 | unsigned char ret = 0; | |
333 | ||
334 | if (volume_percent < 0) | |
335 | volume_percent = 0; | |
336 | if (volume_percent > 100) | |
337 | volume_percent = 100; | |
338 | ||
339 | if (volume_percent >= 0) | |
340 | ret = 7; | |
341 | if (volume_percent >= 13) /* 12.5 */ | |
342 | ret = 6; | |
343 | if (volume_percent >= 25) | |
344 | ret = 5; | |
345 | if (volume_percent >= 38) /* 37.5 */ | |
346 | ret = 4; | |
347 | if (volume_percent >= 50) | |
348 | ret = 3; | |
349 | if (volume_percent >= 63) /* 62.5 */ | |
350 | ret = 2; /* This is the default volume */ | |
351 | if (volume_percent >= 75) | |
352 | ret = 1; | |
353 | if (volume_percent >= 88) /* 87.5 */ | |
354 | ret = 0; | |
355 | ||
356 | ret |= 0x80; | |
357 | ||
358 | return ret; | |
359 | } | |
360 | ||
7d3fadd1 | 361 | static void lkkbd_detection_done(struct lkkbd *lk) |
1da177e4 LT |
362 | { |
363 | int i; | |
364 | ||
365 | /* | |
366 | * Reset setting for Compose key. Let Compose be KEY_COMPOSE. | |
367 | */ | |
368 | lk->keycode[0xb1] = KEY_COMPOSE; | |
369 | ||
370 | /* | |
371 | * Print keyboard name and modify Compose=Alt on user's request. | |
372 | */ | |
373 | switch (lk->id[4]) { | |
7d3fadd1 DT |
374 | case 1: |
375 | strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name)); | |
376 | ||
377 | if (lk201_compose_is_alt) | |
378 | lk->keycode[0xb1] = KEY_LEFTALT; | |
379 | break; | |
380 | ||
381 | case 2: | |
382 | strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name)); | |
383 | break; | |
384 | ||
385 | default: | |
386 | strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name)); | |
387 | printk(KERN_ERR | |
388 | "lkkbd: keyboard on %s is unknown, please report to " | |
389 | "Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys); | |
390 | printk(KERN_ERR "lkkbd: keyboard ID'ed as:"); | |
391 | for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) | |
392 | printk(" 0x%02x", lk->id[i]); | |
393 | printk("\n"); | |
394 | break; | |
1da177e4 | 395 | } |
7d3fadd1 DT |
396 | |
397 | printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", | |
398 | lk->phys, lk->name); | |
1da177e4 LT |
399 | |
400 | /* | |
401 | * Report errors during keyboard boot-up. | |
402 | */ | |
403 | switch (lk->id[2]) { | |
7d3fadd1 DT |
404 | case 0x00: |
405 | /* All okay */ | |
406 | break; | |
407 | ||
408 | case LK_STUCK_KEY: | |
409 | printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n", | |
410 | lk->phys); | |
411 | break; | |
412 | ||
413 | case LK_SELFTEST_FAILED: | |
414 | printk(KERN_ERR | |
415 | "lkkbd: Selftest failed on keyboard at %s, " | |
416 | "keyboard may not work properly\n", lk->phys); | |
417 | break; | |
418 | ||
419 | default: | |
420 | printk(KERN_ERR | |
421 | "lkkbd: Unknown error %02x on keyboard at %s\n", | |
422 | lk->id[2], lk->phys); | |
423 | break; | |
1da177e4 LT |
424 | } |
425 | ||
426 | /* | |
427 | * Try to hint user if there's a stuck key. | |
428 | */ | |
429 | if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) | |
7d3fadd1 DT |
430 | printk(KERN_ERR |
431 | "Scancode of stuck key is 0x%02x, keycode is 0x%04x\n", | |
432 | lk->id[3], lk->keycode[lk->id[3]]); | |
1da177e4 LT |
433 | } |
434 | ||
435 | /* | |
436 | * lkkbd_interrupt() is called by the low level driver when a character | |
437 | * is received. | |
438 | */ | |
7d3fadd1 DT |
439 | static irqreturn_t lkkbd_interrupt(struct serio *serio, |
440 | unsigned char data, unsigned int flags) | |
1da177e4 | 441 | { |
7d3fadd1 DT |
442 | struct lkkbd *lk = serio_get_drvdata(serio); |
443 | struct input_dev *input_dev = lk->dev; | |
444 | unsigned int keycode; | |
1da177e4 LT |
445 | int i; |
446 | ||
7d3fadd1 | 447 | DBG(KERN_INFO "Got byte 0x%02x\n", data); |
1da177e4 LT |
448 | |
449 | if (lk->ignore_bytes > 0) { | |
7d3fadd1 | 450 | DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name); |
1da177e4 LT |
451 | lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; |
452 | ||
453 | if (lk->ignore_bytes == 0) | |
7d3fadd1 | 454 | lkkbd_detection_done(lk); |
1da177e4 LT |
455 | |
456 | return IRQ_HANDLED; | |
457 | } | |
458 | ||
459 | switch (data) { | |
7d3fadd1 DT |
460 | case LK_ALL_KEYS_UP: |
461 | for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++) | |
462 | input_report_key(input_dev, lk->keycode[i], 0); | |
463 | input_sync(input_dev); | |
464 | break; | |
465 | ||
466 | case 0x01: | |
467 | DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n"); | |
468 | lk->ignore_bytes = LK_NUM_IGNORE_BYTES; | |
469 | lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; | |
470 | schedule_work(&lk->tq); | |
471 | break; | |
472 | ||
473 | case LK_METRONOME: | |
474 | case LK_OUTPUT_ERROR: | |
475 | case LK_INPUT_ERROR: | |
476 | case LK_KBD_LOCKED: | |
477 | case LK_KBD_TEST_MODE_ACK: | |
478 | case LK_PREFIX_KEY_DOWN: | |
479 | case LK_MODE_CHANGE_ACK: | |
480 | case LK_RESPONSE_RESERVED: | |
481 | DBG(KERN_INFO "Got %s and don't know how to handle...\n", | |
482 | response_name(data)); | |
483 | break; | |
484 | ||
485 | default: | |
486 | keycode = lk->keycode[data]; | |
487 | if (keycode != KEY_RESERVED) { | |
488 | input_report_key(input_dev, keycode, | |
489 | !test_bit(keycode, input_dev->key)); | |
490 | input_sync(input_dev); | |
491 | } else { | |
492 | printk(KERN_WARNING | |
493 | "%s: Unknown key with scancode 0x%02x on %s.\n", | |
494 | __FILE__, data, lk->name); | |
495 | } | |
1da177e4 LT |
496 | } |
497 | ||
498 | return IRQ_HANDLED; | |
499 | } | |
500 | ||
7d3fadd1 DT |
501 | static void lkkbd_toggle_leds(struct lkkbd *lk) |
502 | { | |
503 | struct serio *serio = lk->serio; | |
504 | unsigned char leds_on = 0; | |
505 | unsigned char leds_off = 0; | |
506 | ||
507 | CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); | |
508 | CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); | |
509 | CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); | |
510 | CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); | |
511 | if (leds_on != 0) { | |
512 | serio_write(serio, LK_CMD_LED_ON); | |
513 | serio_write(serio, leds_on); | |
514 | } | |
515 | if (leds_off != 0) { | |
516 | serio_write(serio, LK_CMD_LED_OFF); | |
517 | serio_write(serio, leds_off); | |
518 | } | |
519 | } | |
520 | ||
521 | static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on) | |
522 | { | |
523 | struct serio *serio = lk->serio; | |
524 | ||
525 | if (on) { | |
526 | DBG("%s: Activating key clicks\n", __func__); | |
527 | serio_write(serio, LK_CMD_ENABLE_KEYCLICK); | |
528 | serio_write(serio, volume_to_hw(lk->keyclick_volume)); | |
529 | serio_write(serio, LK_CMD_ENABLE_CTRCLICK); | |
530 | serio_write(serio, volume_to_hw(lk->ctrlclick_volume)); | |
531 | } else { | |
532 | DBG("%s: Deactivating key clicks\n", __func__); | |
533 | serio_write(serio, LK_CMD_DISABLE_KEYCLICK); | |
534 | serio_write(serio, LK_CMD_DISABLE_CTRCLICK); | |
535 | } | |
536 | ||
537 | } | |
538 | ||
1da177e4 LT |
539 | /* |
540 | * lkkbd_event() handles events from the input module. | |
541 | */ | |
7d3fadd1 DT |
542 | static int lkkbd_event(struct input_dev *dev, |
543 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 544 | { |
7d3fadd1 | 545 | struct lkkbd *lk = input_get_drvdata(dev); |
1da177e4 LT |
546 | |
547 | switch (type) { | |
7d3fadd1 DT |
548 | case EV_LED: |
549 | lkkbd_toggle_leds(lk); | |
550 | return 0; | |
551 | ||
552 | case EV_SND: | |
553 | switch (code) { | |
554 | case SND_CLICK: | |
555 | lkkbd_toggle_keyclick(lk, value); | |
1da177e4 LT |
556 | return 0; |
557 | ||
7d3fadd1 DT |
558 | case SND_BELL: |
559 | if (value != 0) | |
560 | serio_write(lk->serio, LK_CMD_SOUND_BELL); | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
565 | break; | |
566 | ||
567 | default: | |
568 | printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n", | |
569 | __func__, type, code, value); | |
1da177e4 LT |
570 | } |
571 | ||
572 | return -1; | |
573 | } | |
574 | ||
575 | /* | |
576 | * lkkbd_reinit() sets leds and beeps to a state the computer remembers they | |
577 | * were in. | |
578 | */ | |
7d3fadd1 | 579 | static void lkkbd_reinit(struct work_struct *work) |
1da177e4 | 580 | { |
c4028958 | 581 | struct lkkbd *lk = container_of(work, struct lkkbd, tq); |
1da177e4 | 582 | int division; |
1da177e4 LT |
583 | |
584 | /* Ask for ID */ | |
7d3fadd1 | 585 | serio_write(lk->serio, LK_CMD_REQUEST_ID); |
1da177e4 LT |
586 | |
587 | /* Reset parameters */ | |
7d3fadd1 | 588 | serio_write(lk->serio, LK_CMD_SET_DEFAULTS); |
1da177e4 LT |
589 | |
590 | /* Set LEDs */ | |
7d3fadd1 | 591 | lkkbd_toggle_leds(lk); |
1da177e4 LT |
592 | |
593 | /* | |
594 | * Try to activate extended LK401 mode. This command will | |
595 | * only work with a LK401 keyboard and grants access to | |
596 | * LAlt, RAlt, RCompose and RShift. | |
597 | */ | |
7d3fadd1 | 598 | serio_write(lk->serio, LK_CMD_ENABLE_LK401); |
1da177e4 LT |
599 | |
600 | /* Set all keys to UPDOWN mode */ | |
601 | for (division = 1; division <= 14; division++) | |
7d3fadd1 DT |
602 | serio_write(lk->serio, |
603 | LK_CMD_SET_MODE(LK_MODE_UPDOWN, division)); | |
1da177e4 LT |
604 | |
605 | /* Enable bell and set volume */ | |
7d3fadd1 DT |
606 | serio_write(lk->serio, LK_CMD_ENABLE_BELL); |
607 | serio_write(lk->serio, volume_to_hw(lk->bell_volume)); | |
1da177e4 LT |
608 | |
609 | /* Enable/disable keyclick (and possibly set volume) */ | |
7d3fadd1 | 610 | lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd)); |
1da177e4 LT |
611 | |
612 | /* Sound the bell if needed */ | |
7d3fadd1 DT |
613 | if (test_bit(SND_BELL, lk->dev->snd)) |
614 | serio_write(lk->serio, LK_CMD_SOUND_BELL); | |
1da177e4 LT |
615 | } |
616 | ||
617 | /* | |
618 | * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. | |
619 | */ | |
7d3fadd1 | 620 | static int lkkbd_connect(struct serio *serio, struct serio_driver *drv) |
1da177e4 LT |
621 | { |
622 | struct lkkbd *lk; | |
3c42f0c3 | 623 | struct input_dev *input_dev; |
1da177e4 LT |
624 | int i; |
625 | int err; | |
626 | ||
7d3fadd1 DT |
627 | lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL); |
628 | input_dev = input_allocate_device(); | |
3c42f0c3 DT |
629 | if (!lk || !input_dev) { |
630 | err = -ENOMEM; | |
2b03b60e | 631 | goto fail1; |
3c42f0c3 | 632 | } |
1da177e4 LT |
633 | |
634 | lk->serio = serio; | |
3c42f0c3 | 635 | lk->dev = input_dev; |
7d3fadd1 | 636 | INIT_WORK(&lk->tq, lkkbd_reinit); |
1da177e4 LT |
637 | lk->bell_volume = bell_volume; |
638 | lk->keyclick_volume = keyclick_volume; | |
639 | lk->ctrlclick_volume = ctrlclick_volume; | |
7d3fadd1 | 640 | memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode)); |
1da177e4 | 641 | |
7d3fadd1 DT |
642 | strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name)); |
643 | snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); | |
3c42f0c3 DT |
644 | |
645 | input_dev->name = lk->name; | |
646 | input_dev->phys = lk->phys; | |
647 | input_dev->id.bustype = BUS_RS232; | |
648 | input_dev->id.vendor = SERIO_LKKBD; | |
649 | input_dev->id.product = 0; | |
650 | input_dev->id.version = 0x0100; | |
469ba4df | 651 | input_dev->dev.parent = &serio->dev; |
3c42f0c3 | 652 | input_dev->event = lkkbd_event; |
b356872f | 653 | |
7d3fadd1 | 654 | input_set_drvdata(input_dev, lk); |
3c42f0c3 | 655 | |
7d3fadd1 DT |
656 | __set_bit(EV_KEY, input_dev->evbit); |
657 | __set_bit(EV_LED, input_dev->evbit); | |
658 | __set_bit(EV_SND, input_dev->evbit); | |
659 | __set_bit(EV_REP, input_dev->evbit); | |
660 | __set_bit(LED_CAPSL, input_dev->ledbit); | |
661 | __set_bit(LED_SLEEP, input_dev->ledbit); | |
662 | __set_bit(LED_COMPOSE, input_dev->ledbit); | |
663 | __set_bit(LED_SCROLLL, input_dev->ledbit); | |
664 | __set_bit(SND_BELL, input_dev->sndbit); | |
665 | __set_bit(SND_CLICK, input_dev->sndbit); | |
3c42f0c3 DT |
666 | |
667 | input_dev->keycode = lk->keycode; | |
7d3fadd1 DT |
668 | input_dev->keycodesize = sizeof(lk->keycode[0]); |
669 | input_dev->keycodemax = ARRAY_SIZE(lk->keycode); | |
dd0d5443 | 670 | |
3c42f0c3 | 671 | for (i = 0; i < LK_NUM_KEYCODES; i++) |
7d3fadd1 | 672 | __set_bit(lk->keycode[i], input_dev->keybit); |
dd0d5443 | 673 | __clear_bit(KEY_RESERVED, input_dev->keybit); |
1da177e4 | 674 | |
7d3fadd1 | 675 | serio_set_drvdata(serio, lk); |
1da177e4 | 676 | |
7d3fadd1 | 677 | err = serio_open(serio, drv); |
3c42f0c3 | 678 | if (err) |
2b03b60e DT |
679 | goto fail2; |
680 | ||
7d3fadd1 | 681 | err = input_register_device(lk->dev); |
2b03b60e DT |
682 | if (err) |
683 | goto fail3; | |
1da177e4 | 684 | |
7d3fadd1 | 685 | serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET); |
1da177e4 LT |
686 | |
687 | return 0; | |
3c42f0c3 | 688 | |
7d3fadd1 DT |
689 | fail3: serio_close(serio); |
690 | fail2: serio_set_drvdata(serio, NULL); | |
691 | fail1: input_free_device(input_dev); | |
692 | kfree(lk); | |
3c42f0c3 | 693 | return err; |
1da177e4 LT |
694 | } |
695 | ||
696 | /* | |
697 | * lkkbd_disconnect() unregisters and closes behind us. | |
698 | */ | |
7d3fadd1 | 699 | static void lkkbd_disconnect(struct serio *serio) |
1da177e4 | 700 | { |
7d3fadd1 DT |
701 | struct lkkbd *lk = serio_get_drvdata(serio); |
702 | ||
703 | input_get_device(lk->dev); | |
704 | input_unregister_device(lk->dev); | |
705 | serio_close(serio); | |
706 | serio_set_drvdata(serio, NULL); | |
707 | input_put_device(lk->dev); | |
708 | kfree(lk); | |
1da177e4 LT |
709 | } |
710 | ||
711 | static struct serio_device_id lkkbd_serio_ids[] = { | |
712 | { | |
713 | .type = SERIO_RS232, | |
714 | .proto = SERIO_LKKBD, | |
715 | .id = SERIO_ANY, | |
716 | .extra = SERIO_ANY, | |
717 | }, | |
718 | { 0 } | |
719 | }; | |
720 | ||
721 | MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); | |
722 | ||
723 | static struct serio_driver lkkbd_drv = { | |
724 | .driver = { | |
725 | .name = "lkkbd", | |
726 | }, | |
727 | .description = DRIVER_DESC, | |
728 | .id_table = lkkbd_serio_ids, | |
729 | .connect = lkkbd_connect, | |
730 | .disconnect = lkkbd_disconnect, | |
731 | .interrupt = lkkbd_interrupt, | |
732 | }; | |
733 | ||
65ac9f7a | 734 | module_serio_driver(lkkbd_drv); |