?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
kcore: register text area in generic way
[linux-2.6/btrfs-unstable.git] / drivers / input / keyboard / hil_kbd.c
blobc83f4b2ec7d3546e5229cb148b4a087265b05c16
1 /*
2 * Generic linux-input device driver for keyboard devices
3 *
4 * Copyright (c) 2001 Brian S. Julin
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * Alternatively, this software may be distributed under the terms of the
17 * GNU General Public License ("GPL").
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 *
29 * References:
30 * HP-HIL Technical Reference Manual. Hewlett Packard Product No. 45918A
31 *
32 */
33
34 #include <linux/hil.h>
35 #include <linux/input.h>
36 #include <linux/serio.h>
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/completion.h>
41 #include <linux/slab.h>
42 #include <linux/pci_ids.h>
43
44 #define PREFIX "HIL: "
45
46 MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
47 MODULE_DESCRIPTION("HIL keyboard/mouse driver");
48 MODULE_LICENSE("Dual BSD/GPL");
49 MODULE_ALIAS("serio:ty03pr25id00ex*"); /* HIL keyboard */
50 MODULE_ALIAS("serio:ty03pr25id0Fex*"); /* HIL mouse */
51
52 #define HIL_PACKET_MAX_LENGTH 16
53
54 #define HIL_KBD_SET1_UPBIT 0x01
55 #define HIL_KBD_SET1_SHIFT 1
56 static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
57 { HIL_KEYCODES_SET1 };
58
59 #define HIL_KBD_SET2_UPBIT 0x01
60 #define HIL_KBD_SET2_SHIFT 1
61 /* Set2 is user defined */
62
63 #define HIL_KBD_SET3_UPBIT 0x80
64 #define HIL_KBD_SET3_SHIFT 0
65 static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] __read_mostly =
66 { HIL_KEYCODES_SET3 };
67
68 static const char hil_language[][16] = { HIL_LOCALE_MAP };
69
70 struct hil_dev {
71 struct input_dev *dev;
72 struct serio *serio;
73
74 /* Input buffer and index for packets from HIL bus. */
75 hil_packet data[HIL_PACKET_MAX_LENGTH];
76 int idx4; /* four counts per packet */
77
78 /* Raw device info records from HIL bus, see hil.h for fields. */
79 char idd[HIL_PACKET_MAX_LENGTH]; /* DID byte and IDD record */
80 char rsc[HIL_PACKET_MAX_LENGTH]; /* RSC record */
81 char exd[HIL_PACKET_MAX_LENGTH]; /* EXD record */
82 char rnm[HIL_PACKET_MAX_LENGTH + 1]; /* RNM record + NULL term. */
83
84 struct completion cmd_done;
85
86 bool is_pointer;
87 /* Extra device details needed for pointing devices. */
88 unsigned int nbtn, naxes;
89 unsigned int btnmap[7];
90 };
91
92 static bool hil_dev_is_command_response(hil_packet p)
93 {
94 if ((p & ~HIL_CMDCT_POL) == (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL))
95 return false;
96
97 if ((p & ~HIL_CMDCT_RPL) == (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_RPL))
98 return false;
99
100 return true;
101 }
102
103 static void hil_dev_handle_command_response(struct hil_dev *dev)
104 {
105 hil_packet p;
106 char *buf;
107 int i, idx;
108
109 idx = dev->idx4 / 4;
110 p = dev->data[idx - 1];
111
112 switch (p & HIL_PKT_DATA_MASK) {
113 case HIL_CMD_IDD:
114 buf = dev->idd;
115 break;
116
117 case HIL_CMD_RSC:
118 buf = dev->rsc;
119 break;
120
121 case HIL_CMD_EXD:
122 buf = dev->exd;
123 break;
124
125 case HIL_CMD_RNM:
126 dev->rnm[HIL_PACKET_MAX_LENGTH] = 0;
127 buf = dev->rnm;
128 break;
129
130 default:
131 /* These occur when device isn't present */
132 if (p != (HIL_ERR_INT | HIL_PKT_CMD)) {
133 /* Anything else we'd like to know about. */
134 printk(KERN_WARNING PREFIX "Device sent unknown record %x\n", p);
135 }
136 goto out;
137 }
138
139 for (i = 0; i < idx; i++)
140 buf[i] = dev->data[i] & HIL_PKT_DATA_MASK;
141 for (; i < HIL_PACKET_MAX_LENGTH; i++)
142 buf[i] = 0;
143 out:
144 complete(&dev->cmd_done);
145 }
146
147 static void hil_dev_handle_kbd_events(struct hil_dev *kbd)
148 {
149 struct input_dev *dev = kbd->dev;
150 int idx = kbd->idx4 / 4;
151 int i;
152
153 switch (kbd->data[0] & HIL_POL_CHARTYPE_MASK) {
154 case HIL_POL_CHARTYPE_NONE:
155 return;
156
157 case HIL_POL_CHARTYPE_ASCII:
158 for (i = 1; i < idx - 1; i++)
159 input_report_key(dev, kbd->data[i] & 0x7f, 1);
160 break;
161
162 case HIL_POL_CHARTYPE_RSVD1:
163 case HIL_POL_CHARTYPE_RSVD2:
164 case HIL_POL_CHARTYPE_BINARY:
165 for (i = 1; i < idx - 1; i++)
166 input_report_key(dev, kbd->data[i], 1);
167 break;
168
169 case HIL_POL_CHARTYPE_SET1:
170 for (i = 1; i < idx - 1; i++) {
171 unsigned int key = kbd->data[i];
172 int up = key & HIL_KBD_SET1_UPBIT;
173
174 key &= (~HIL_KBD_SET1_UPBIT & 0xff);
175 key = hil_kbd_set1[key >> HIL_KBD_SET1_SHIFT];
176 input_report_key(dev, key, !up);
177 }
178 break;
179
180 case HIL_POL_CHARTYPE_SET2:
181 for (i = 1; i < idx - 1; i++) {
182 unsigned int key = kbd->data[i];
183 int up = key & HIL_KBD_SET2_UPBIT;
184
185 key &= (~HIL_KBD_SET1_UPBIT & 0xff);
186 key = key >> HIL_KBD_SET2_SHIFT;
187 input_report_key(dev, key, !up);
188 }
189 break;
190
191 case HIL_POL_CHARTYPE_SET3:
192 for (i = 1; i < idx - 1; i++) {
193 unsigned int key = kbd->data[i];
194 int up = key & HIL_KBD_SET3_UPBIT;
195
196 key &= (~HIL_KBD_SET1_UPBIT & 0xff);
197 key = hil_kbd_set3[key >> HIL_KBD_SET3_SHIFT];
198 input_report_key(dev, key, !up);
199 }
200 break;
201 }
202
203 input_sync(dev);
204 }
205
206 static void hil_dev_handle_ptr_events(struct hil_dev *ptr)
207 {
208 struct input_dev *dev = ptr->dev;
209 int idx = ptr->idx4 / 4;
210 hil_packet p = ptr->data[idx - 1];
211 int i, cnt, laxis;
212 bool absdev, ax16;
213
214 if ((p & HIL_CMDCT_POL) != idx - 1) {
215 printk(KERN_WARNING PREFIX
216 "Malformed poll packet %x (idx = %i)\n", p, idx);
217 return;
218 }
219
220 i = (p & HIL_POL_AXIS_ALT) ? 3 : 0;
221 laxis = (p & HIL_POL_NUM_AXES_MASK) + i;
222
223 ax16 = ptr->idd[1] & HIL_IDD_HEADER_16BIT; /* 8 or 16bit resolution */
224 absdev = ptr->idd[1] & HIL_IDD_HEADER_ABS;
225
226 for (cnt = 1; i < laxis; i++) {
227 unsigned int lo, hi, val;
228
229 lo = ptr->data[cnt++] & HIL_PKT_DATA_MASK;
230 hi = ax16 ? (ptr->data[cnt++] & HIL_PKT_DATA_MASK) : 0;
231
232 if (absdev) {
233 val = lo + (hi << 8);
234 #ifdef TABLET_AUTOADJUST
235 if (val < dev->absmin[ABS_X + i])
236 dev->absmin[ABS_X + i] = val;
237 if (val > dev->absmax[ABS_X + i])
238 dev->absmax[ABS_X + i] = val;
239 #endif
240 if (i%3) val = dev->absmax[ABS_X + i] - val;
241 input_report_abs(dev, ABS_X + i, val);
242 } else {
243 val = (int) (((int8_t)lo) | ((int8_t)hi << 8));
244 if (i % 3)
245 val *= -1;
246 input_report_rel(dev, REL_X + i, val);
247 }
248 }
249
250 while (cnt < idx - 1) {
251 unsigned int btn = ptr->data[cnt++];
252 int up = btn & 1;
253
254 btn &= 0xfe;
255 if (btn == 0x8e)
256 continue; /* TODO: proximity == touch? */
257 if (btn > 0x8c || btn < 0x80)
258 continue;
259 btn = (btn - 0x80) >> 1;
260 btn = ptr->btnmap[btn];
261 input_report_key(dev, btn, !up);
262 }
263
264 input_sync(dev);
265 }
266
267 static void hil_dev_process_err(struct hil_dev *dev)
268 {
269 printk(KERN_WARNING PREFIX "errored HIL packet\n");
270 dev->idx4 = 0;
271 complete(&dev->cmd_done); /* just in case somebody is waiting */
272 }
273
274 static irqreturn_t hil_dev_interrupt(struct serio *serio,
275 unsigned char data, unsigned int flags)
276 {
277 struct hil_dev *dev;
278 hil_packet packet;
279 int idx;
280
281 dev = serio_get_drvdata(serio);
282 BUG_ON(dev == NULL);
283
284 if (dev->idx4 >= HIL_PACKET_MAX_LENGTH * sizeof(hil_packet)) {
285 hil_dev_process_err(dev);
286 goto out;
287 }
288
289 idx = dev->idx4 / 4;
290 if (!(dev->idx4 % 4))
291 dev->data[idx] = 0;
292 packet = dev->data[idx];
293 packet |= ((hil_packet)data) << ((3 - (dev->idx4 % 4)) * 8);
294 dev->data[idx] = packet;
295
296 /* Records of N 4-byte hil_packets must terminate with a command. */
297 if ((++dev->idx4 % 4) == 0) {
298 if ((packet & 0xffff0000) != HIL_ERR_INT) {
299 hil_dev_process_err(dev);
300 } else if (packet & HIL_PKT_CMD) {
301 if (hil_dev_is_command_response(packet))
302 hil_dev_handle_command_response(dev);
303 else if (dev->is_pointer)
304 hil_dev_handle_ptr_events(dev);
305 else
306 hil_dev_handle_kbd_events(dev);
307 dev->idx4 = 0;
308 }
309 }
310 out:
311 return IRQ_HANDLED;
312 }
313
314 static void hil_dev_disconnect(struct serio *serio)
315 {
316 struct hil_dev *dev = serio_get_drvdata(serio);
317
318 BUG_ON(dev == NULL);
319
320 serio_close(serio);
321 input_unregister_device(dev->dev);
322 serio_set_drvdata(serio, NULL);
323 kfree(dev);
324 }
325
326 static void hil_dev_keyboard_setup(struct hil_dev *kbd)
327 {
328 struct input_dev *input_dev = kbd->dev;
329 uint8_t did = kbd->idd[0];
330 int i;
331
332 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
333 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
334 BIT_MASK(LED_SCROLLL);
335
336 for (i = 0; i < 128; i++) {
337 __set_bit(hil_kbd_set1[i], input_dev->keybit);
338 __set_bit(hil_kbd_set3[i], input_dev->keybit);
339 }
340 __clear_bit(KEY_RESERVED, input_dev->keybit);
341
342 input_dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
343 input_dev->keycodesize = sizeof(hil_kbd_set1[0]);
344 input_dev->keycode = hil_kbd_set1;
345
346 input_dev->name = strlen(kbd->rnm) ? kbd->rnm : "HIL keyboard";
347 input_dev->phys = "hpkbd/input0";
348
349 printk(KERN_INFO PREFIX "HIL keyboard found (did = 0x%02x, lang = %s)\n",
350 did, hil_language[did & HIL_IDD_DID_TYPE_KB_LANG_MASK]);
351 }
352
353 static void hil_dev_pointer_setup(struct hil_dev *ptr)
354 {
355 struct input_dev *input_dev = ptr->dev;
356 uint8_t did = ptr->idd[0];
357 uint8_t *idd = ptr->idd + 1;
358 unsigned int naxsets = HIL_IDD_NUM_AXSETS(*idd);
359 unsigned int i, btntype;
360 const char *txt;
361
362 ptr->naxes = HIL_IDD_NUM_AXES_PER_SET(*idd);
363
364 switch (did & HIL_IDD_DID_TYPE_MASK) {
365 case HIL_IDD_DID_TYPE_REL:
366 input_dev->evbit[0] = BIT_MASK(EV_REL);
367
368 for (i = 0; i < ptr->naxes; i++)
369 __set_bit(REL_X + i, input_dev->relbit);
370
371 for (i = 3; naxsets > 1 && i < ptr->naxes + 3; i++)
372 __set_bit(REL_X + i, input_dev->relbit);
373
374 txt = "relative";
375 break;
376
377 case HIL_IDD_DID_TYPE_ABS:
378 input_dev->evbit[0] = BIT_MASK(EV_ABS);
379
380 for (i = 0; i < ptr->naxes; i++)
381 input_set_abs_params(input_dev, ABS_X + i,
382 0, HIL_IDD_AXIS_MAX(idd, i), 0, 0);
383
384 for (i = 3; naxsets > 1 && i < ptr->naxes + 3; i++)
385 input_set_abs_params(input_dev, ABS_X + i,
386 0, HIL_IDD_AXIS_MAX(idd, i - 3), 0, 0);
387
388 #ifdef TABLET_AUTOADJUST
389 for (i = 0; i < ABS_MAX; i++) {
390 int diff = input_dev->absmax[ABS_X + i] / 10;
391 input_dev->absmin[ABS_X + i] += diff;
392 input_dev->absmax[ABS_X + i] -= diff;
393 }
394 #endif
395
396 txt = "absolute";
397 break;
398
399 default:
400 BUG();
401 }
402
403 ptr->nbtn = HIL_IDD_NUM_BUTTONS(idd);
404 if (ptr->nbtn)
405 input_dev->evbit[0] |= BIT_MASK(EV_KEY);
406
407 btntype = BTN_MISC;
408 if ((did & HIL_IDD_DID_ABS_TABLET_MASK) == HIL_IDD_DID_ABS_TABLET)
409 #ifdef TABLET_SIMULATES_MOUSE
410 btntype = BTN_TOUCH;
411 #else
412 btntype = BTN_DIGI;
413 #endif
414 if ((did & HIL_IDD_DID_ABS_TSCREEN_MASK) == HIL_IDD_DID_ABS_TSCREEN)
415 btntype = BTN_TOUCH;
416
417 if ((did & HIL_IDD_DID_REL_MOUSE_MASK) == HIL_IDD_DID_REL_MOUSE)
418 btntype = BTN_MOUSE;
419
420 for (i = 0; i < ptr->nbtn; i++) {
421 __set_bit(btntype | i, input_dev->keybit);
422 ptr->btnmap[i] = btntype | i;
423 }
424
425 if (btntype == BTN_MOUSE) {
426 /* Swap buttons 2 and 3 */
427 ptr->btnmap[1] = BTN_MIDDLE;
428 ptr->btnmap[2] = BTN_RIGHT;
429 }
430
431 input_dev->name = strlen(ptr->rnm) ? ptr->rnm : "HIL pointer device";
432
433 printk(KERN_INFO PREFIX
434 "HIL pointer device found (did: 0x%02x, axis: %s)\n",
435 did, txt);
436 printk(KERN_INFO PREFIX
437 "HIL pointer has %i buttons and %i sets of %i axes\n",
438 ptr->nbtn, naxsets, ptr->naxes);
439 }
440
441 static int hil_dev_connect(struct serio *serio, struct serio_driver *drv)
442 {
443 struct hil_dev *dev;
444 struct input_dev *input_dev;
445 uint8_t did, *idd;
446 int error;
447
448 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
449 input_dev = input_allocate_device();
450 if (!dev || !input_dev) {
451 error = -ENOMEM;
452 goto bail0;
453 }
454
455 dev->serio = serio;
456 dev->dev = input_dev;
457
458 error = serio_open(serio, drv);
459 if (error)
460 goto bail0;
461
462 serio_set_drvdata(serio, dev);
463
464 /* Get device info. MLC driver supplies devid/status/etc. */
465 init_completion(&dev->cmd_done);
466 serio_write(serio, 0);
467 serio_write(serio, 0);
468 serio_write(serio, HIL_PKT_CMD >> 8);
469 serio_write(serio, HIL_CMD_IDD);
470 error = wait_for_completion_killable(&dev->cmd_done);
471 if (error)
472 goto bail1;
473
474 init_completion(&dev->cmd_done);
475 serio_write(serio, 0);
476 serio_write(serio, 0);
477 serio_write(serio, HIL_PKT_CMD >> 8);
478 serio_write(serio, HIL_CMD_RSC);
479 error = wait_for_completion_killable(&dev->cmd_done);
480 if (error)
481 goto bail1;
482
483 init_completion(&dev->cmd_done);
484 serio_write(serio, 0);
485 serio_write(serio, 0);
486 serio_write(serio, HIL_PKT_CMD >> 8);
487 serio_write(serio, HIL_CMD_RNM);
488 error = wait_for_completion_killable(&dev->cmd_done);
489 if (error)
490 goto bail1;
491
492 init_completion(&dev->cmd_done);
493 serio_write(serio, 0);
494 serio_write(serio, 0);
495 serio_write(serio, HIL_PKT_CMD >> 8);
496 serio_write(serio, HIL_CMD_EXD);
497 error = wait_for_completion_killable(&dev->cmd_done);
498 if (error)
499 goto bail1;
500
501 did = dev->idd[0];
502 idd = dev->idd + 1;
503
504 switch (did & HIL_IDD_DID_TYPE_MASK) {
505 case HIL_IDD_DID_TYPE_KB_INTEGRAL:
506 case HIL_IDD_DID_TYPE_KB_ITF:
507 case HIL_IDD_DID_TYPE_KB_RSVD:
508 case HIL_IDD_DID_TYPE_CHAR:
509 if (HIL_IDD_NUM_BUTTONS(idd) ||
510 HIL_IDD_NUM_AXES_PER_SET(*idd)) {
511 printk(KERN_INFO PREFIX
512 "combo devices are not supported.\n");
513 goto bail1;
514 }
515
516 dev->is_pointer = false;
517 hil_dev_keyboard_setup(dev);
518 break;
519
520 case HIL_IDD_DID_TYPE_REL:
521 case HIL_IDD_DID_TYPE_ABS:
522 dev->is_pointer = true;
523 hil_dev_pointer_setup(dev);
524 break;
525
526 default:
527 goto bail1;
528 }
529
530 input_dev->id.bustype = BUS_HIL;
531 input_dev->id.vendor = PCI_VENDOR_ID_HP;
532 input_dev->id.product = 0x0001; /* TODO: get from kbd->rsc */
533 input_dev->id.version = 0x0100; /* TODO: get from kbd->rsc */
534 input_dev->dev.parent = &serio->dev;
535
536 if (!dev->is_pointer) {
537 serio_write(serio, 0);
538 serio_write(serio, 0);
539 serio_write(serio, HIL_PKT_CMD >> 8);
540 /* Enable Keyswitch Autorepeat 1 */
541 serio_write(serio, HIL_CMD_EK1);
542 /* No need to wait for completion */
543 }
544
545 error = input_register_device(input_dev);
546 if (error)
547 goto bail1;
548
549 return 0;
550
551 bail1:
552 serio_close(serio);
553 serio_set_drvdata(serio, NULL);
554 bail0:
555 input_free_device(input_dev);
556 kfree(dev);
557 return error;
558 }
559
560 static struct serio_device_id hil_dev_ids[] = {
561 {
562 .type = SERIO_HIL_MLC,
563 .proto = SERIO_HIL,
564 .id = SERIO_ANY,
565 .extra = SERIO_ANY,
566 },
567 { 0 }
568 };
569
570 static struct serio_driver hil_serio_drv = {
571 .driver = {
572 .name = "hil_dev",
573 },
574 .description = "HP HIL keyboard/mouse/tablet driver",
575 .id_table = hil_dev_ids,
576 .connect = hil_dev_connect,
577 .disconnect = hil_dev_disconnect,
578 .interrupt = hil_dev_interrupt
579 };
580
581 static int __init hil_dev_init(void)
582 {
583 return serio_register_driver(&hil_serio_drv);
584 }
585
586 static void __exit hil_dev_exit(void)
587 {
588 serio_unregister_driver(&hil_serio_drv);
589 }
590
591 module_init(hil_dev_init);
592 module_exit(hil_dev_exit);
(deprecated) Btrfs devel tree