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Input: focaltech - mark focaltech_set_resolution() static
[deliverable/linux.git] / drivers / input / mouse / sentelic.c
CommitLineData
fc69f4a6
TL		 1/*-
2 * Finger Sensing Pad PS/2 mouse driver.
3 *
4 * Copyright (C) 2005-2007 Asia Vital Components Co., Ltd.
a4c85075 5 * Copyright (C) 2005-2012 Tai-hwa Liang, Sentelic Corporation.
fc69f4a6
TL		 6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (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, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include <linux/module.h>
fc69f4a6 23#include <linux/input.h>
a4c85075 24#include <linux/input/mt.h>
fc69f4a6
TL		 25#include <linux/ctype.h>
26#include <linux/libps2.h>
27#include <linux/serio.h>
28#include <linux/jiffies.h>
5a0e3ad6 29#include <linux/slab.h>
fc69f4a6
TL		 30
31#include "psmouse.h"
32#include "sentelic.h"
33
34/*
35 * Timeout for FSP PS/2 command only (in milliseconds).
36 */
37#define FSP_CMD_TIMEOUT 200
38#define FSP_CMD_TIMEOUT2 30
39
727f9b48
OS		 40#define GET_ABS_X(packet) ((packet[1] << 2) | ((packet[3] >> 2) & 0x03))
41#define GET_ABS_Y(packet) ((packet[2] << 2) | (packet[3] & 0x03))
42
fc69f4a6 43/** Driver version. */
d3132c5c 44static const char fsp_drv_ver[] = "1.1.0-K";
fc69f4a6
TL		 45
46/*
47 * Make sure that the value being sent to FSP will not conflict with
48 * possible sample rate values.
49 */
50static unsigned char fsp_test_swap_cmd(unsigned char reg_val)
51{
52 switch (reg_val) {
53 case 10: case 20: case 40: case 60: case 80: case 100: case 200:
54 /*
55 * The requested value being sent to FSP matched to possible
56 * sample rates, swap the given value such that the hardware
57 * wouldn't get confused.
58 */
59 return (reg_val >> 4) | (reg_val << 4);
60 default:
61 return reg_val; /* swap isn't necessary */
62 }
63}
64
65/*
66 * Make sure that the value being sent to FSP will not conflict with certain
67 * commands.
68 */
69static unsigned char fsp_test_invert_cmd(unsigned char reg_val)
70{
71 switch (reg_val) {
72 case 0xe9: case 0xee: case 0xf2: case 0xff:
73 /*
74 * The requested value being sent to FSP matched to certain
75 * commands, inverse the given value such that the hardware
76 * wouldn't get confused.
77 */
78 return ~reg_val;
79 default:
80 return reg_val; /* inversion isn't necessary */
81 }
82}
83
84static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val)
85{
86 struct ps2dev *ps2dev = &psmouse->ps2dev;
87 unsigned char param[3];
88 unsigned char addr;
89 int rc = -1;
90
91 /*
92 * We need to shut off the device and switch it into command
93 * mode so we don't confuse our protocol handler. We don't need
94 * to do that for writes because sysfs set helper does this for
95 * us.
96 */
c35c0e7d 97 psmouse_deactivate(psmouse);
181d683d
DT		 98
99 ps2_begin_command(ps2dev);
fc69f4a6
TL		 100
101 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
102 goto out;
103
104 /* should return 0xfe(request for resending) */
105 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
106 /* should return 0xfc(failed) */
107 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
108
109 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
110 goto out;
111
112 if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
113 ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2);
114 } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
115 /* swapping is required */
116 ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2);
117 /* expect 0xfe */
118 } else {
119 /* swapping isn't necessary */
120 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
121 /* expect 0xfe */
122 }
123 /* should return 0xfc(failed) */
124 ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT);
125
126 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0)
127 goto out;
128
129 *reg_val = param[2];
130 rc = 0;
131
132 out:
181d683d 133 ps2_end_command(ps2dev);
c35c0e7d 134 psmouse_activate(psmouse);
3ac1780f
TL		 135 psmouse_dbg(psmouse,
136 "READ REG: 0x%02x is 0x%02x (rc = %d)\n",
137 reg_addr, *reg_val, rc);
fc69f4a6
TL		 138 return rc;
139}
140
141static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val)
142{
143 struct ps2dev *ps2dev = &psmouse->ps2dev;
144 unsigned char v;
145 int rc = -1;
146
181d683d 147 ps2_begin_command(ps2dev);
fc69f4a6
TL		 148
149 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
150 goto out;
151
152 if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
153 /* inversion is required */
154 ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2);
155 } else {
156 if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
157 /* swapping is required */
158 ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2);
159 } else {
160 /* swapping isn't necessary */
161 ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2);
162 }
163 }
164 /* write the register address in correct order */
165 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
166
167 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
d9bae67a 168 goto out;
fc69f4a6
TL		 169
170 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
171 /* inversion is required */
172 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
173 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
174 /* swapping is required */
175 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
176 } else {
177 /* swapping isn't necessary */
178 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
179 }
180
181 /* write the register value in correct order */
182 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
183 rc = 0;
184
185 out:
181d683d 186 ps2_end_command(ps2dev);
3ac1780f
TL		 187 psmouse_dbg(psmouse,
188 "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n",
189 reg_addr, reg_val, rc);
fc69f4a6
TL		 190 return rc;
191}
192
193/* Enable register clock gating for writing certain registers */
194static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable)
195{
196 int v, nv;
197
198 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1)
199 return -1;
200
201 if (enable)
202 nv = v | FSP_BIT_EN_REG_CLK;
203 else
204 nv = v & ~FSP_BIT_EN_REG_CLK;
205
206 /* only write if necessary */
207 if (nv != v)
208 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1)
209 return -1;
210
211 return 0;
212}
213
214static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val)
215{
216 struct ps2dev *ps2dev = &psmouse->ps2dev;
217 unsigned char param[3];
218 int rc = -1;
219
c35c0e7d 220 psmouse_deactivate(psmouse);
181d683d
DT		 221
222 ps2_begin_command(ps2dev);
fc69f4a6
TL		 223
224 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
225 goto out;
226
227 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
228 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
229
230 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
231 goto out;
232
233 ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2);
234 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
235
236 /* get the returned result */
237 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
238 goto out;
239
240 *reg_val = param[2];
241 rc = 0;
242
243 out:
181d683d 244 ps2_end_command(ps2dev);
c35c0e7d 245 psmouse_activate(psmouse);
3ac1780f
TL		 246 psmouse_dbg(psmouse,
247 "READ PAGE REG: 0x%02x (rc = %d)\n",
248 *reg_val, rc);
fc69f4a6
TL		 249 return rc;
250}
251
252static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val)
253{
254 struct ps2dev *ps2dev = &psmouse->ps2dev;
255 unsigned char v;
256 int rc = -1;
257
181d683d 258 ps2_begin_command(ps2dev);
fc69f4a6
TL		 259
260 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
261 goto out;
262
263 ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2);
264 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
265
266 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
d9bae67a 267 goto out;
fc69f4a6
TL		 268
269 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
270 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
271 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
272 /* swapping is required */
273 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
274 } else {
275 /* swapping isn't necessary */
276 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
277 }
278
279 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
280 rc = 0;
281
282 out:
181d683d 283 ps2_end_command(ps2dev);
3ac1780f
TL		 284 psmouse_dbg(psmouse,
285 "WRITE PAGE REG: to 0x%02x (rc = %d)\n",
286 reg_val, rc);
fc69f4a6
TL		 287 return rc;
288}
289
290static int fsp_get_version(struct psmouse *psmouse, int *version)
291{
292 if (fsp_reg_read(psmouse, FSP_REG_VERSION, version))
293 return -EIO;
294
295 return 0;
296}
297
298static int fsp_get_revision(struct psmouse *psmouse, int *rev)
299{
300 if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev))
301 return -EIO;
302
303 return 0;
304}
305
d3132c5c
TL		 306static int fsp_get_sn(struct psmouse *psmouse, int *sn)
307{
308 int v0, v1, v2;
309 int rc = -EIO;
310
311 /* production number since Cx is available at: 0x0b40 ~ 0x0b42 */
312 if (fsp_page_reg_write(psmouse, FSP_PAGE_0B))
313 goto out;
314 if (fsp_reg_read(psmouse, FSP_REG_SN0, &v0))
315 goto out;
316 if (fsp_reg_read(psmouse, FSP_REG_SN1, &v1))
317 goto out;
318 if (fsp_reg_read(psmouse, FSP_REG_SN2, &v2))
319 goto out;
320 *sn = (v0 << 16) | (v1 << 8) | v2;
321 rc = 0;
322out:
323 fsp_page_reg_write(psmouse, FSP_PAGE_DEFAULT);
324 return rc;
325}
326
fc69f4a6
TL		 327static int fsp_get_buttons(struct psmouse *psmouse, int *btn)
328{
329 static const int buttons[] = {
330 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */
331 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */
332 0x04, /* Left/Middle/Right & Scroll Up/Down */
333 0x02, /* Left/Middle/Right */
334 };
335 int val;
336
6ccbcf2c 337 if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS, &val) == -1)
fc69f4a6
TL		 338 return -EIO;
339
340 *btn = buttons[(val & 0x30) >> 4];
341 return 0;
342}
343
344/* Enable on-pad command tag output */
345static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable)
346{
347 int v, nv;
348 int res = 0;
349
350 if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) {
3ac1780f 351 psmouse_err(psmouse, "Unable get OPC state.\n");
fc69f4a6
TL		 352 return -EIO;
353 }
354
355 if (enable)
356 nv = v | FSP_BIT_EN_OPC_TAG;
357 else
358 nv = v & ~FSP_BIT_EN_OPC_TAG;
359
360 /* only write if necessary */
361 if (nv != v) {
362 fsp_reg_write_enable(psmouse, true);
363 res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv);
364 fsp_reg_write_enable(psmouse, false);
365 }
366
367 if (res != 0) {
3ac1780f 368 psmouse_err(psmouse, "Unable to enable OPC tag.\n");
fc69f4a6
TL		 369 res = -EIO;
370 }
371
372 return res;
373}
374
375static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable)
376{
377 struct fsp_data *pad = psmouse->private;
378 int val;
379
380 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
381 return -EIO;
382
383 pad->vscroll = enable;
384
385 if (enable)
386 val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE);
387 else
388 val &= ~FSP_BIT_FIX_VSCR;
389
390 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
391 return -EIO;
392
393 return 0;
394}
395
396static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable)
397{
398 struct fsp_data *pad = psmouse->private;
399 int val, v2;
400
401 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
402 return -EIO;
403
404 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2))
405 return -EIO;
406
407 pad->hscroll = enable;
408
409 if (enable) {
410 val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE);
411 v2 |= FSP_BIT_EN_MSID6;
412 } else {
413 val &= ~FSP_BIT_FIX_HSCR;
414 v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8);
415 }
416
417 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
418 return -EIO;
419
420 /* reconfigure horizontal scrolling packet output */
421 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2))
422 return -EIO;
423
424 return 0;
425}
426
427/*
428 * Write device specific initial parameters.
429 *
430 * ex: 0xab 0xcd - write oxcd into register 0xab
431 */
432static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data,
433 const char *buf, size_t count)
434{
9c8f5579 435 unsigned int reg, val;
fc69f4a6
TL		 436 char *rest;
437 ssize_t retval;
438
439 reg = simple_strtoul(buf, &rest, 16);
440 if (rest == buf || *rest != ' ' || reg > 0xff)
441 return -EINVAL;
442
9c8f5579 443 retval = kstrtouint(rest + 1, 16, &val);
76496e7a
JD		 444 if (retval)
445 return retval;
446
447 if (val > 0xff)
fc69f4a6
TL		 448 return -EINVAL;
449
450 if (fsp_reg_write_enable(psmouse, true))
451 return -EIO;
452
453 retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count;
454
455 fsp_reg_write_enable(psmouse, false);
456
457 return count;
458}
459
460PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg);
461
462static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse,
463 void *data, char *buf)
464{
465 struct fsp_data *pad = psmouse->private;
466
467 return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val);
468}
469
470/*
471 * Read a register from device.
472 *
473 * ex: 0xab -- read content from register 0xab
474 */
475static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data,
476 const char *buf, size_t count)
477{
478 struct fsp_data *pad = psmouse->private;
9c8f5579
DC		 479 unsigned int reg, val;
480 int err;
76496e7a 481
9c8f5579 482 err = kstrtouint(buf, 16, &reg);
76496e7a
JD		 483 if (err)
484 return err;
fc69f4a6 485
76496e7a 486 if (reg > 0xff)
fc69f4a6
TL		 487 return -EINVAL;
488
489 if (fsp_reg_read(psmouse, reg, &val))
490 return -EIO;
491
492 pad->last_reg = reg;
493 pad->last_val = val;
494
495 return count;
496}
497
498PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
499 fsp_attr_show_getreg, fsp_attr_set_getreg);
500
501static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
502 void *data, char *buf)
503{
504 int val = 0;
505
506 if (fsp_page_reg_read(psmouse, &val))
507 return -EIO;
508
509 return sprintf(buf, "%02x\n", val);
510}
511
512static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
513 const char *buf, size_t count)
514{
9c8f5579
DC		 515 unsigned int val;
516 int err;
fc69f4a6 517
9c8f5579 518 err = kstrtouint(buf, 16, &val);
76496e7a
JD		 519 if (err)
520 return err;
521
522 if (val > 0xff)
fc69f4a6
TL		 523 return -EINVAL;
524
525 if (fsp_page_reg_write(psmouse, val))
526 return -EIO;
527
528 return count;
529}
530
531PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
532 fsp_attr_show_pagereg, fsp_attr_set_pagereg);
533
534static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
535 void *data, char *buf)
536{
537 struct fsp_data *pad = psmouse->private;
538
539 return sprintf(buf, "%d\n", pad->vscroll);
540}
541
542static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
543 const char *buf, size_t count)
544{
76496e7a
JD		 545 unsigned int val;
546 int err;
547
548 err = kstrtouint(buf, 10, &val);
549 if (err)
550 return err;
fc69f4a6 551
76496e7a 552 if (val > 1)
fc69f4a6
TL		 553 return -EINVAL;
554
555 fsp_onpad_vscr(psmouse, val);
556
557 return count;
558}
559
560PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
561 fsp_attr_show_vscroll, fsp_attr_set_vscroll);
562
563static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
564 void *data, char *buf)
565{
566 struct fsp_data *pad = psmouse->private;
567
568 return sprintf(buf, "%d\n", pad->hscroll);
569}
570
571static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
572 const char *buf, size_t count)
573{
76496e7a
JD		 574 unsigned int val;
575 int err;
576
577 err = kstrtouint(buf, 10, &val);
578 if (err)
579 return err;
fc69f4a6 580
76496e7a 581 if (val > 1)
fc69f4a6
TL		 582 return -EINVAL;
583
584 fsp_onpad_hscr(psmouse, val);
585
586 return count;
587}
588
589PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
590 fsp_attr_show_hscroll, fsp_attr_set_hscroll);
591
592static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
593 void *data, char *buf)
594{
595 struct fsp_data *pad = psmouse->private;
596
597 return sprintf(buf, "%c\n",
598 pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
599}
600
601static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
602 const char *buf, size_t count)
603{
604 struct fsp_data *pad = psmouse->private;
605 size_t i;
606
607 for (i = 0; i < count; i++) {
608 switch (buf[i]) {
609 case 'C':
610 pad->flags |= FSPDRV_FLAG_EN_OPC;
611 break;
612 case 'c':
613 pad->flags &= ~FSPDRV_FLAG_EN_OPC;
614 break;
615 default:
616 return -EINVAL;
617 }
618 }
619 return count;
620}
621
622PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
623 fsp_attr_show_flags, fsp_attr_set_flags);
624
625static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
626 void *data, char *buf)
627{
628 return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
629}
630
631PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
632
633static struct attribute *fsp_attributes[] = {
634 &psmouse_attr_setreg.dattr.attr,
635 &psmouse_attr_getreg.dattr.attr,
636 &psmouse_attr_page.dattr.attr,
637 &psmouse_attr_vscroll.dattr.attr,
638 &psmouse_attr_hscroll.dattr.attr,
639 &psmouse_attr_flags.dattr.attr,
640 &psmouse_attr_ver.dattr.attr,
641 NULL
642};
643
644static struct attribute_group fsp_attribute_group = {
645 .attrs = fsp_attributes,
646};
647
727f9b48
OS		 648#ifdef FSP_DEBUG
649static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
fc69f4a6
TL		 650{
651 static unsigned int ps2_packet_cnt;
652 static unsigned int ps2_last_second;
653 unsigned int jiffies_msec;
727f9b48
OS		 654 const char *packet_type = "UNKNOWN";
655 unsigned short abs_x = 0, abs_y = 0;
656
657 /* Interpret & dump the packet data. */
658 switch (packet[0] >> FSP_PKT_TYPE_SHIFT) {
659 case FSP_PKT_TYPE_ABS:
660 packet_type = "Absolute";
661 abs_x = GET_ABS_X(packet);
662 abs_y = GET_ABS_Y(packet);
663 break;
664 case FSP_PKT_TYPE_NORMAL:
665 packet_type = "Normal";
666 break;
667 case FSP_PKT_TYPE_NOTIFY:
668 packet_type = "Notify";
669 break;
670 case FSP_PKT_TYPE_NORMAL_OPC:
671 packet_type = "Normal-OPC";
672 break;
673 }
fc69f4a6
TL		 674
675 ps2_packet_cnt++;
676 jiffies_msec = jiffies_to_msecs(jiffies);
b5d21704 677 psmouse_dbg(psmouse,
727f9b48
OS		 678 "%08dms %s packets: %02x, %02x, %02x, %02x; "
679 "abs_x: %d, abs_y: %d\n",
680 jiffies_msec, packet_type,
681 packet[0], packet[1], packet[2], packet[3], abs_x, abs_y);
fc69f4a6
TL		 682
683 if (jiffies_msec - ps2_last_second > 1000) {
b5d21704 684 psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
fc69f4a6
TL		 685 ps2_packet_cnt = 0;
686 ps2_last_second = jiffies_msec;
687 }
688}
689#else
727f9b48 690static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
fc69f4a6
TL		 691{
692}
693#endif
694
a4c85075
TL		 695static void fsp_set_slot(struct input_dev *dev, int slot, bool active,
696 unsigned int x, unsigned int y)
697{
698 input_mt_slot(dev, slot);
699 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
700 if (active) {
701 input_report_abs(dev, ABS_MT_POSITION_X, x);
702 input_report_abs(dev, ABS_MT_POSITION_Y, y);
703 }
704}
705
fc69f4a6
TL		 706static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
707{
708 struct input_dev *dev = psmouse->dev;
709 struct fsp_data *ad = psmouse->private;
710 unsigned char *packet = psmouse->packet;
711 unsigned char button_status = 0, lscroll = 0, rscroll = 0;
a4c85075 712 unsigned short abs_x, abs_y, fgrs = 0;
fc69f4a6
TL		 713 int rel_x, rel_y;
714
715 if (psmouse->pktcnt < 4)
716 return PSMOUSE_GOOD_DATA;
717
718 /*
719 * Full packet accumulated, process it
720 */
721
727f9b48
OS		 722 fsp_packet_debug(psmouse, packet);
723
fc69f4a6
TL		 724 switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
725 case FSP_PKT_TYPE_ABS:
30ebb7fa
TL		 726
727 if ((packet[0] == 0x48 || packet[0] == 0x49) &&
728 packet[1] == 0 && packet[2] == 0) {
729 /*
730 * Ignore coordinate noise when finger leaving the
731 * surface, otherwise cursor may jump to upper-left
732 * corner.
733 */
734 packet[3] &= 0xf0;
735 }
736
727f9b48
OS		 737 abs_x = GET_ABS_X(packet);
738 abs_y = GET_ABS_Y(packet);
a4c85075
TL		 739
740 if (packet[0] & FSP_PB0_MFMC) {
741 /*
742 * MFMC packet: assume that there are two fingers on
743 * pad
744 */
745 fgrs = 2;
746
747 /* MFMC packet */
748 if (packet[0] & FSP_PB0_MFMC_FGR2) {
749 /* 2nd finger */
750 if (ad->last_mt_fgr == 2) {
751 /*
752 * workaround for buggy firmware
753 * which doesn't clear MFMC bit if
754 * the 1st finger is up
755 */
756 fgrs = 1;
757 fsp_set_slot(dev, 0, false, 0, 0);
758 }
759 ad->last_mt_fgr = 2;
760
761 fsp_set_slot(dev, 1, fgrs == 2, abs_x, abs_y);
762 } else {
763 /* 1st finger */
764 if (ad->last_mt_fgr == 1) {
765 /*
766 * workaround for buggy firmware
767 * which doesn't clear MFMC bit if
768 * the 2nd finger is up
769 */
770 fgrs = 1;
771 fsp_set_slot(dev, 1, false, 0, 0);
772 }
773 ad->last_mt_fgr = 1;
774 fsp_set_slot(dev, 0, fgrs != 0, abs_x, abs_y);
775 }
776 } else {
777 /* SFAC packet */
d626dad5
OS		 778 if ((packet[0] & (FSP_PB0_LBTN|FSP_PB0_PHY_BTN)) ==
779 FSP_PB0_LBTN) {
780 /* On-pad click in SFAC mode should be handled
781 * by userspace. On-pad clicks in MFMC mode
782 * are real clickpad clicks, and not ignored.
783 */
784 packet[0] &= ~FSP_PB0_LBTN;
785 }
a4c85075
TL		 786
787 /* no multi-finger information */
788 ad->last_mt_fgr = 0;
789
790 if (abs_x != 0 && abs_y != 0)
791 fgrs = 1;
792
793 fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
794 fsp_set_slot(dev, 1, false, 0, 0);
795 }
a2546165 796 if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
a4c85075
TL		 797 input_report_abs(dev, ABS_X, abs_x);
798 input_report_abs(dev, ABS_Y, abs_y);
799 }
800 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
801 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
802 input_report_key(dev, BTN_TOUCH, fgrs);
803 input_report_key(dev, BTN_TOOL_FINGER, fgrs == 1);
804 input_report_key(dev, BTN_TOOL_DOUBLETAP, fgrs == 2);
fc69f4a6
TL		 805 break;
806
807 case FSP_PKT_TYPE_NORMAL_OPC:
808 /* on-pad click, filter it if necessary */
809 if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
7b85f73d 810 packet[0] &= ~FSP_PB0_LBTN;
fc69f4a6
TL		 811 /* fall through */
812
813 case FSP_PKT_TYPE_NORMAL:
814 /* normal packet */
815 /* special packet data translation from on-pad packets */
816 if (packet[3] != 0) {
817 if (packet[3] & BIT(0))
818 button_status |= 0x01; /* wheel down */
819 if (packet[3] & BIT(1))
820 button_status |= 0x0f; /* wheel up */
821 if (packet[3] & BIT(2))
c332e9fc 822 button_status |= BIT(4);/* horizontal left */
fc69f4a6 823 if (packet[3] & BIT(3))
c332e9fc 824 button_status |= BIT(5);/* horizontal right */
fc69f4a6
TL		 825 /* push back to packet queue */
826 if (button_status != 0)
827 packet[3] = button_status;
828 rscroll = (packet[3] >> 4) & 1;
829 lscroll = (packet[3] >> 5) & 1;
830 }
831 /*
832 * Processing wheel up/down and extra button events
833 */
834 input_report_rel(dev, REL_WHEEL,
835 (int)(packet[3] & 8) - (int)(packet[3] & 7));
836 input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
837 input_report_key(dev, BTN_BACK, lscroll);
838 input_report_key(dev, BTN_FORWARD, rscroll);
839
840 /*
841 * Standard PS/2 Mouse
842 */
843 input_report_key(dev, BTN_LEFT, packet[0] & 1);
844 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
845 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
846
847 rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
848 rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
849
850 input_report_rel(dev, REL_X, rel_x);
851 input_report_rel(dev, REL_Y, rel_y);
852 break;
853 }
854
855 input_sync(dev);
856
fc69f4a6
TL		 857 return PSMOUSE_FULL_PACKET;
858}
859
860static int fsp_activate_protocol(struct psmouse *psmouse)
861{
862 struct fsp_data *pad = psmouse->private;
863 struct ps2dev *ps2dev = &psmouse->ps2dev;
864 unsigned char param[2];
865 int val;
866
867 /*
868 * Standard procedure to enter FSP Intellimouse mode
869 * (scrolling wheel, 4th and 5th buttons)
870 */
871 param[0] = 200;
872 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
873 param[0] = 200;
874 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
875 param[0] = 80;
876 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
877
878 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
879 if (param[0] != 0x04) {
3ac1780f
TL		 880 psmouse_err(psmouse,
881 "Unable to enable 4 bytes packet format.\n");
fc69f4a6
TL		 882 return -EIO;
883 }
884
3ac1780f
TL		 885 if (pad->ver < FSP_VER_STL3888_C0) {
886 /* Preparing relative coordinates output for older hardware */
887 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
888 psmouse_err(psmouse,
889 "Unable to read SYSCTL5 register.\n");
890 return -EIO;
891 }
fc69f4a6 892
3ac1780f
TL		 893 if (fsp_get_buttons(psmouse, &pad->buttons)) {
894 psmouse_err(psmouse,
895 "Unable to retrieve number of buttons.\n");
896 return -EIO;
897 }
fc69f4a6 898
3ac1780f
TL		 899 val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
900 /* Ensure we are not in absolute mode */
901 val &= ~FSP_BIT_EN_PKT_G0;
902 if (pad->buttons == 0x06) {
903 /* Left/Middle/Right & Scroll Up/Down/Right/Left */
904 val |= FSP_BIT_EN_MSID6;
905 }
906
907 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
908 psmouse_err(psmouse,
909 "Unable to set up required mode bits.\n");
910 return -EIO;
911 }
912
913 /*
914 * Enable OPC tags such that driver can tell the difference
915 * between on-pad and real button click
916 */
917 if (fsp_opc_tag_enable(psmouse, true))
918 psmouse_warn(psmouse,
919 "Failed to enable OPC tag mode.\n");
920 /* enable on-pad click by default */
921 pad->flags |= FSPDRV_FLAG_EN_OPC;
922
923 /* Enable on-pad vertical and horizontal scrolling */
924 fsp_onpad_vscr(psmouse, true);
925 fsp_onpad_hscr(psmouse, true);
a4c85075
TL		 926 } else {
927 /* Enable absolute coordinates output for Cx/Dx hardware */
928 if (fsp_reg_write(psmouse, FSP_REG_SWC1,
929 FSP_BIT_SWC1_EN_ABS_1F |
930 FSP_BIT_SWC1_EN_ABS_2F |
931 FSP_BIT_SWC1_EN_FUP_OUT |
932 FSP_BIT_SWC1_EN_ABS_CON)) {
933 psmouse_err(psmouse,
934 "Unable to enable absolute coordinates output.\n");
935 return -EIO;
936 }
fc69f4a6
TL		 937 }
938
3ac1780f
TL		 939 return 0;
940}
941
942static int fsp_set_input_params(struct psmouse *psmouse)
943{
944 struct input_dev *dev = psmouse->dev;
945 struct fsp_data *pad = psmouse->private;
fc69f4a6 946
3ac1780f
TL		 947 if (pad->ver < FSP_VER_STL3888_C0) {
948 __set_bit(BTN_MIDDLE, dev->keybit);
949 __set_bit(BTN_BACK, dev->keybit);
950 __set_bit(BTN_FORWARD, dev->keybit);
951 __set_bit(REL_WHEEL, dev->relbit);
952 __set_bit(REL_HWHEEL, dev->relbit);
a4c85075
TL		 953 } else {
954 /*
955 * Hardware prior to Cx performs much better in relative mode;
956 * hence, only enable absolute coordinates output as well as
957 * multi-touch output for the newer hardware.
958 *
959 * Maximum coordinates can be computed as:
960 *
961 * number of scanlines * 64 - 57
962 *
963 * where number of X/Y scanline lines are 16/12.
964 */
965 int abs_x = 967, abs_y = 711;
966
967 __set_bit(EV_ABS, dev->evbit);
968 __clear_bit(EV_REL, dev->evbit);
969 __set_bit(BTN_TOUCH, dev->keybit);
970 __set_bit(BTN_TOOL_FINGER, dev->keybit);
971 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
972 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
973
974 input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0);
975 input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0);
b4adbbef 976 input_mt_init_slots(dev, 2, 0);
a4c85075
TL		 977 input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0);
978 input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0);
3ac1780f 979 }
fc69f4a6
TL		 980
981 return 0;
982}
983
b7802c5c 984int fsp_detect(struct psmouse *psmouse, bool set_properties)
fc69f4a6
TL		 985{
986 int id;
987
988 if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
989 return -EIO;
990
991 if (id != 0x01)
992 return -ENODEV;
993
994 if (set_properties) {
995 psmouse->vendor = "Sentelic";
996 psmouse->name = "FingerSensingPad";
997 }
998
999 return 0;
1000}
1001
1002static void fsp_reset(struct psmouse *psmouse)
1003{
1004 fsp_opc_tag_enable(psmouse, false);
1005 fsp_onpad_vscr(psmouse, false);
1006 fsp_onpad_hscr(psmouse, false);
1007}
1008
1009static void fsp_disconnect(struct psmouse *psmouse)
1010{
1011 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
1012 &fsp_attribute_group);
1013
1014 fsp_reset(psmouse);
1015 kfree(psmouse->private);
1016}
1017
1018static int fsp_reconnect(struct psmouse *psmouse)
1019{
1020 int version;
1021
1022 if (fsp_detect(psmouse, 0))
1023 return -ENODEV;
1024
1025 if (fsp_get_version(psmouse, &version))
1026 return -ENODEV;
1027
1028 if (fsp_activate_protocol(psmouse))
1029 return -EIO;
1030
1031 return 0;
1032}
1033
1034int fsp_init(struct psmouse *psmouse)
1035{
1036 struct fsp_data *priv;
d3132c5c 1037 int ver, rev, sn = 0;
fc69f4a6
TL		 1038 int error;
1039
1040 if (fsp_get_version(psmouse, &ver) ||
3ac1780f 1041 fsp_get_revision(psmouse, &rev)) {
fc69f4a6
TL		 1042 return -ENODEV;
1043 }
d3132c5c
TL		 1044 if (ver >= FSP_VER_STL3888_C0) {
1045 /* firmware information is only available since C0 */
1046 fsp_get_sn(psmouse, &sn);
1047 }
fc69f4a6 1048
d3132c5c
TL		 1049 psmouse_info(psmouse,
1050 "Finger Sensing Pad, hw: %d.%d.%d, sn: %x, sw: %s\n",
1051 ver >> 4, ver & 0x0F, rev, sn, fsp_drv_ver);
fc69f4a6
TL		 1052
1053 psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
1054 if (!priv)
1055 return -ENOMEM;
1056
1057 priv->ver = ver;
1058 priv->rev = rev;
fc69f4a6
TL		 1059
1060 psmouse->protocol_handler = fsp_process_byte;
1061 psmouse->disconnect = fsp_disconnect;
1062 psmouse->reconnect = fsp_reconnect;
1063 psmouse->cleanup = fsp_reset;
1064 psmouse->pktsize = 4;
1065
fc69f4a6
TL		 1066 error = fsp_activate_protocol(psmouse);
1067 if (error)
1068 goto err_out;
1069
3ac1780f
TL		 1070 /* Set up various supported input event bits */
1071 error = fsp_set_input_params(psmouse);
1072 if (error)
1073 goto err_out;
1074
fc69f4a6
TL		 1075 error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
1076 &fsp_attribute_group);
1077 if (error) {
3ac1780f
TL		 1078 psmouse_err(psmouse,
1079 "Failed to create sysfs attributes (%d)", error);
fc69f4a6
TL		 1080 goto err_out;
1081 }
1082
1083 return 0;
1084
1085 err_out:
1086 kfree(psmouse->private);
1087 psmouse->private = NULL;
1088 return error;
1089}
Linux kernel - Deliverables
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