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fc69f4a6 TL |
1 | /*- |
2 | * Finger Sensing Pad PS/2 mouse driver. | |
3 | * | |
4 | * Copyright (C) 2005-2007 Asia Vital Components Co., Ltd. | |
5 | * Copyright (C) 2005-2009 Tai-hwa Liang, Sentelic Corporation. | |
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> | |
23 | #include <linux/version.h> | |
24 | #include <linux/input.h> | |
25 | #include <linux/ctype.h> | |
26 | #include <linux/libps2.h> | |
27 | #include <linux/serio.h> | |
28 | #include <linux/jiffies.h> | |
29 | ||
30 | #include "psmouse.h" | |
31 | #include "sentelic.h" | |
32 | ||
33 | /* | |
34 | * Timeout for FSP PS/2 command only (in milliseconds). | |
35 | */ | |
36 | #define FSP_CMD_TIMEOUT 200 | |
37 | #define FSP_CMD_TIMEOUT2 30 | |
38 | ||
39 | /** Driver version. */ | |
40 | static const char fsp_drv_ver[] = "1.0.0-K"; | |
41 | ||
42 | /* | |
43 | * Make sure that the value being sent to FSP will not conflict with | |
44 | * possible sample rate values. | |
45 | */ | |
46 | static unsigned char fsp_test_swap_cmd(unsigned char reg_val) | |
47 | { | |
48 | switch (reg_val) { | |
49 | case 10: case 20: case 40: case 60: case 80: case 100: case 200: | |
50 | /* | |
51 | * The requested value being sent to FSP matched to possible | |
52 | * sample rates, swap the given value such that the hardware | |
53 | * wouldn't get confused. | |
54 | */ | |
55 | return (reg_val >> 4) | (reg_val << 4); | |
56 | default: | |
57 | return reg_val; /* swap isn't necessary */ | |
58 | } | |
59 | } | |
60 | ||
61 | /* | |
62 | * Make sure that the value being sent to FSP will not conflict with certain | |
63 | * commands. | |
64 | */ | |
65 | static unsigned char fsp_test_invert_cmd(unsigned char reg_val) | |
66 | { | |
67 | switch (reg_val) { | |
68 | case 0xe9: case 0xee: case 0xf2: case 0xff: | |
69 | /* | |
70 | * The requested value being sent to FSP matched to certain | |
71 | * commands, inverse the given value such that the hardware | |
72 | * wouldn't get confused. | |
73 | */ | |
74 | return ~reg_val; | |
75 | default: | |
76 | return reg_val; /* inversion isn't necessary */ | |
77 | } | |
78 | } | |
79 | ||
80 | static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val) | |
81 | { | |
82 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
83 | unsigned char param[3]; | |
84 | unsigned char addr; | |
85 | int rc = -1; | |
86 | ||
87 | /* | |
88 | * We need to shut off the device and switch it into command | |
89 | * mode so we don't confuse our protocol handler. We don't need | |
90 | * to do that for writes because sysfs set helper does this for | |
91 | * us. | |
92 | */ | |
93 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE); | |
94 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
95 | mutex_lock(&ps2dev->cmd_mutex); | |
96 | ||
97 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
98 | goto out; | |
99 | ||
100 | /* should return 0xfe(request for resending) */ | |
101 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
102 | /* should return 0xfc(failed) */ | |
103 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
104 | ||
105 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
106 | goto out; | |
107 | ||
108 | if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) { | |
109 | ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2); | |
110 | } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) { | |
111 | /* swapping is required */ | |
112 | ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2); | |
113 | /* expect 0xfe */ | |
114 | } else { | |
115 | /* swapping isn't necessary */ | |
116 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
117 | /* expect 0xfe */ | |
118 | } | |
119 | /* should return 0xfc(failed) */ | |
120 | ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT); | |
121 | ||
122 | if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0) | |
123 | goto out; | |
124 | ||
125 | *reg_val = param[2]; | |
126 | rc = 0; | |
127 | ||
128 | out: | |
129 | mutex_unlock(&ps2dev->cmd_mutex); | |
130 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
131 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
132 | dev_dbg(&ps2dev->serio->dev, "READ REG: 0x%02x is 0x%02x (rc = %d)\n", | |
133 | reg_addr, *reg_val, rc); | |
134 | return rc; | |
135 | } | |
136 | ||
137 | static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val) | |
138 | { | |
139 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
140 | unsigned char v; | |
141 | int rc = -1; | |
142 | ||
143 | mutex_lock(&ps2dev->cmd_mutex); | |
144 | ||
145 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
146 | goto out; | |
147 | ||
148 | if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) { | |
149 | /* inversion is required */ | |
150 | ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2); | |
151 | } else { | |
152 | if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) { | |
153 | /* swapping is required */ | |
154 | ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2); | |
155 | } else { | |
156 | /* swapping isn't necessary */ | |
157 | ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2); | |
158 | } | |
159 | } | |
160 | /* write the register address in correct order */ | |
161 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
162 | ||
163 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
164 | return -1; | |
165 | ||
166 | if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) { | |
167 | /* inversion is required */ | |
168 | ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2); | |
169 | } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) { | |
170 | /* swapping is required */ | |
171 | ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2); | |
172 | } else { | |
173 | /* swapping isn't necessary */ | |
174 | ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2); | |
175 | } | |
176 | ||
177 | /* write the register value in correct order */ | |
178 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
179 | rc = 0; | |
180 | ||
181 | out: | |
182 | mutex_unlock(&ps2dev->cmd_mutex); | |
183 | dev_dbg(&ps2dev->serio->dev, "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n", | |
184 | reg_addr, reg_val, rc); | |
185 | return rc; | |
186 | } | |
187 | ||
188 | /* Enable register clock gating for writing certain registers */ | |
189 | static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable) | |
190 | { | |
191 | int v, nv; | |
192 | ||
193 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1) | |
194 | return -1; | |
195 | ||
196 | if (enable) | |
197 | nv = v | FSP_BIT_EN_REG_CLK; | |
198 | else | |
199 | nv = v & ~FSP_BIT_EN_REG_CLK; | |
200 | ||
201 | /* only write if necessary */ | |
202 | if (nv != v) | |
203 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1) | |
204 | return -1; | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val) | |
210 | { | |
211 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
212 | unsigned char param[3]; | |
213 | int rc = -1; | |
214 | ||
215 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE); | |
216 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
217 | mutex_lock(&ps2dev->cmd_mutex); | |
218 | ||
219 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
220 | goto out; | |
221 | ||
222 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
223 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
224 | ||
225 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
226 | goto out; | |
227 | ||
228 | ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2); | |
229 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
230 | ||
231 | /* get the returned result */ | |
232 | if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
233 | goto out; | |
234 | ||
235 | *reg_val = param[2]; | |
236 | rc = 0; | |
237 | ||
238 | out: | |
239 | mutex_unlock(&ps2dev->cmd_mutex); | |
240 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
241 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
242 | dev_dbg(&ps2dev->serio->dev, "READ PAGE REG: 0x%02x (rc = %d)\n", | |
243 | *reg_val, rc); | |
244 | return rc; | |
245 | } | |
246 | ||
247 | static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val) | |
248 | { | |
249 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
250 | unsigned char v; | |
251 | int rc = -1; | |
252 | ||
253 | mutex_lock(&ps2dev->cmd_mutex); | |
254 | ||
255 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
256 | goto out; | |
257 | ||
258 | ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2); | |
259 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
260 | ||
261 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
262 | return -1; | |
263 | ||
264 | if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) { | |
265 | ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2); | |
266 | } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) { | |
267 | /* swapping is required */ | |
268 | ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2); | |
269 | } else { | |
270 | /* swapping isn't necessary */ | |
271 | ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2); | |
272 | } | |
273 | ||
274 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
275 | rc = 0; | |
276 | ||
277 | out: | |
278 | mutex_unlock(&ps2dev->cmd_mutex); | |
279 | dev_dbg(&ps2dev->serio->dev, "WRITE PAGE REG: to 0x%02x (rc = %d)\n", | |
280 | reg_val, rc); | |
281 | return rc; | |
282 | } | |
283 | ||
284 | static int fsp_get_version(struct psmouse *psmouse, int *version) | |
285 | { | |
286 | if (fsp_reg_read(psmouse, FSP_REG_VERSION, version)) | |
287 | return -EIO; | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static int fsp_get_revision(struct psmouse *psmouse, int *rev) | |
293 | { | |
294 | if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev)) | |
295 | return -EIO; | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | static int fsp_get_buttons(struct psmouse *psmouse, int *btn) | |
301 | { | |
302 | static const int buttons[] = { | |
303 | 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */ | |
304 | 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */ | |
305 | 0x04, /* Left/Middle/Right & Scroll Up/Down */ | |
306 | 0x02, /* Left/Middle/Right */ | |
307 | }; | |
308 | int val; | |
309 | ||
310 | if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS1, &val) == -1) | |
311 | return -EIO; | |
312 | ||
313 | *btn = buttons[(val & 0x30) >> 4]; | |
314 | return 0; | |
315 | } | |
316 | ||
317 | /* Enable on-pad command tag output */ | |
318 | static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable) | |
319 | { | |
320 | int v, nv; | |
321 | int res = 0; | |
322 | ||
323 | if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) { | |
324 | dev_err(&psmouse->ps2dev.serio->dev, "Unable get OPC state.\n"); | |
325 | return -EIO; | |
326 | } | |
327 | ||
328 | if (enable) | |
329 | nv = v | FSP_BIT_EN_OPC_TAG; | |
330 | else | |
331 | nv = v & ~FSP_BIT_EN_OPC_TAG; | |
332 | ||
333 | /* only write if necessary */ | |
334 | if (nv != v) { | |
335 | fsp_reg_write_enable(psmouse, true); | |
336 | res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv); | |
337 | fsp_reg_write_enable(psmouse, false); | |
338 | } | |
339 | ||
340 | if (res != 0) { | |
341 | dev_err(&psmouse->ps2dev.serio->dev, | |
342 | "Unable to enable OPC tag.\n"); | |
343 | res = -EIO; | |
344 | } | |
345 | ||
346 | return res; | |
347 | } | |
348 | ||
349 | static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable) | |
350 | { | |
351 | struct fsp_data *pad = psmouse->private; | |
352 | int val; | |
353 | ||
354 | if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val)) | |
355 | return -EIO; | |
356 | ||
357 | pad->vscroll = enable; | |
358 | ||
359 | if (enable) | |
360 | val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE); | |
361 | else | |
362 | val &= ~FSP_BIT_FIX_VSCR; | |
363 | ||
364 | if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val)) | |
365 | return -EIO; | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable) | |
371 | { | |
372 | struct fsp_data *pad = psmouse->private; | |
373 | int val, v2; | |
374 | ||
375 | if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val)) | |
376 | return -EIO; | |
377 | ||
378 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2)) | |
379 | return -EIO; | |
380 | ||
381 | pad->hscroll = enable; | |
382 | ||
383 | if (enable) { | |
384 | val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE); | |
385 | v2 |= FSP_BIT_EN_MSID6; | |
386 | } else { | |
387 | val &= ~FSP_BIT_FIX_HSCR; | |
388 | v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8); | |
389 | } | |
390 | ||
391 | if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val)) | |
392 | return -EIO; | |
393 | ||
394 | /* reconfigure horizontal scrolling packet output */ | |
395 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2)) | |
396 | return -EIO; | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | /* | |
402 | * Write device specific initial parameters. | |
403 | * | |
404 | * ex: 0xab 0xcd - write oxcd into register 0xab | |
405 | */ | |
406 | static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data, | |
407 | const char *buf, size_t count) | |
408 | { | |
409 | unsigned long reg, val; | |
410 | char *rest; | |
411 | ssize_t retval; | |
412 | ||
413 | reg = simple_strtoul(buf, &rest, 16); | |
414 | if (rest == buf || *rest != ' ' || reg > 0xff) | |
415 | return -EINVAL; | |
416 | ||
417 | if (strict_strtoul(rest + 1, 16, &val) || val > 0xff) | |
418 | return -EINVAL; | |
419 | ||
420 | if (fsp_reg_write_enable(psmouse, true)) | |
421 | return -EIO; | |
422 | ||
423 | retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count; | |
424 | ||
425 | fsp_reg_write_enable(psmouse, false); | |
426 | ||
427 | return count; | |
428 | } | |
429 | ||
430 | PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg); | |
431 | ||
432 | static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse, | |
433 | void *data, char *buf) | |
434 | { | |
435 | struct fsp_data *pad = psmouse->private; | |
436 | ||
437 | return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val); | |
438 | } | |
439 | ||
440 | /* | |
441 | * Read a register from device. | |
442 | * | |
443 | * ex: 0xab -- read content from register 0xab | |
444 | */ | |
445 | static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data, | |
446 | const char *buf, size_t count) | |
447 | { | |
448 | struct fsp_data *pad = psmouse->private; | |
449 | unsigned long reg; | |
450 | int val; | |
451 | ||
452 | if (strict_strtoul(buf, 16, ®) || reg > 0xff) | |
453 | return -EINVAL; | |
454 | ||
455 | if (fsp_reg_read(psmouse, reg, &val)) | |
456 | return -EIO; | |
457 | ||
458 | pad->last_reg = reg; | |
459 | pad->last_val = val; | |
460 | ||
461 | return count; | |
462 | } | |
463 | ||
464 | PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL, | |
465 | fsp_attr_show_getreg, fsp_attr_set_getreg); | |
466 | ||
467 | static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse, | |
468 | void *data, char *buf) | |
469 | { | |
470 | int val = 0; | |
471 | ||
472 | if (fsp_page_reg_read(psmouse, &val)) | |
473 | return -EIO; | |
474 | ||
475 | return sprintf(buf, "%02x\n", val); | |
476 | } | |
477 | ||
478 | static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data, | |
479 | const char *buf, size_t count) | |
480 | { | |
481 | unsigned long val; | |
482 | ||
483 | if (strict_strtoul(buf, 16, &val) || val > 0xff) | |
484 | return -EINVAL; | |
485 | ||
486 | if (fsp_page_reg_write(psmouse, val)) | |
487 | return -EIO; | |
488 | ||
489 | return count; | |
490 | } | |
491 | ||
492 | PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL, | |
493 | fsp_attr_show_pagereg, fsp_attr_set_pagereg); | |
494 | ||
495 | static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse, | |
496 | void *data, char *buf) | |
497 | { | |
498 | struct fsp_data *pad = psmouse->private; | |
499 | ||
500 | return sprintf(buf, "%d\n", pad->vscroll); | |
501 | } | |
502 | ||
503 | static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data, | |
504 | const char *buf, size_t count) | |
505 | { | |
506 | unsigned long val; | |
507 | ||
508 | if (strict_strtoul(buf, 10, &val) || val > 1) | |
509 | return -EINVAL; | |
510 | ||
511 | fsp_onpad_vscr(psmouse, val); | |
512 | ||
513 | return count; | |
514 | } | |
515 | ||
516 | PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL, | |
517 | fsp_attr_show_vscroll, fsp_attr_set_vscroll); | |
518 | ||
519 | static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse, | |
520 | void *data, char *buf) | |
521 | { | |
522 | struct fsp_data *pad = psmouse->private; | |
523 | ||
524 | return sprintf(buf, "%d\n", pad->hscroll); | |
525 | } | |
526 | ||
527 | static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data, | |
528 | const char *buf, size_t count) | |
529 | { | |
530 | unsigned long val; | |
531 | ||
532 | if (strict_strtoul(buf, 10, &val) || val > 1) | |
533 | return -EINVAL; | |
534 | ||
535 | fsp_onpad_hscr(psmouse, val); | |
536 | ||
537 | return count; | |
538 | } | |
539 | ||
540 | PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL, | |
541 | fsp_attr_show_hscroll, fsp_attr_set_hscroll); | |
542 | ||
543 | static ssize_t fsp_attr_show_flags(struct psmouse *psmouse, | |
544 | void *data, char *buf) | |
545 | { | |
546 | struct fsp_data *pad = psmouse->private; | |
547 | ||
548 | return sprintf(buf, "%c\n", | |
549 | pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c'); | |
550 | } | |
551 | ||
552 | static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data, | |
553 | const char *buf, size_t count) | |
554 | { | |
555 | struct fsp_data *pad = psmouse->private; | |
556 | size_t i; | |
557 | ||
558 | for (i = 0; i < count; i++) { | |
559 | switch (buf[i]) { | |
560 | case 'C': | |
561 | pad->flags |= FSPDRV_FLAG_EN_OPC; | |
562 | break; | |
563 | case 'c': | |
564 | pad->flags &= ~FSPDRV_FLAG_EN_OPC; | |
565 | break; | |
566 | default: | |
567 | return -EINVAL; | |
568 | } | |
569 | } | |
570 | return count; | |
571 | } | |
572 | ||
573 | PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL, | |
574 | fsp_attr_show_flags, fsp_attr_set_flags); | |
575 | ||
576 | static ssize_t fsp_attr_show_ver(struct psmouse *psmouse, | |
577 | void *data, char *buf) | |
578 | { | |
579 | return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver); | |
580 | } | |
581 | ||
582 | PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver); | |
583 | ||
584 | static struct attribute *fsp_attributes[] = { | |
585 | &psmouse_attr_setreg.dattr.attr, | |
586 | &psmouse_attr_getreg.dattr.attr, | |
587 | &psmouse_attr_page.dattr.attr, | |
588 | &psmouse_attr_vscroll.dattr.attr, | |
589 | &psmouse_attr_hscroll.dattr.attr, | |
590 | &psmouse_attr_flags.dattr.attr, | |
591 | &psmouse_attr_ver.dattr.attr, | |
592 | NULL | |
593 | }; | |
594 | ||
595 | static struct attribute_group fsp_attribute_group = { | |
596 | .attrs = fsp_attributes, | |
597 | }; | |
598 | ||
599 | #ifdef FSP_DEBUG | |
600 | static void fsp_packet_debug(unsigned char packet[]) | |
601 | { | |
602 | static unsigned int ps2_packet_cnt; | |
603 | static unsigned int ps2_last_second; | |
604 | unsigned int jiffies_msec; | |
605 | ||
606 | ps2_packet_cnt++; | |
607 | jiffies_msec = jiffies_to_msecs(jiffies); | |
608 | printk(KERN_DEBUG "%08dms PS/2 packets: %02x, %02x, %02x, %02x\n", | |
609 | jiffies_msec, packet[0], packet[1], packet[2], packet[3]); | |
610 | ||
611 | if (jiffies_msec - ps2_last_second > 1000) { | |
612 | printk(KERN_DEBUG "PS/2 packets/sec = %d\n", ps2_packet_cnt); | |
613 | ps2_packet_cnt = 0; | |
614 | ps2_last_second = jiffies_msec; | |
615 | } | |
616 | } | |
617 | #else | |
618 | static void fsp_packet_debug(unsigned char packet[]) | |
619 | { | |
620 | } | |
621 | #endif | |
622 | ||
623 | static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse) | |
624 | { | |
625 | struct input_dev *dev = psmouse->dev; | |
626 | struct fsp_data *ad = psmouse->private; | |
627 | unsigned char *packet = psmouse->packet; | |
628 | unsigned char button_status = 0, lscroll = 0, rscroll = 0; | |
629 | int rel_x, rel_y; | |
630 | ||
631 | if (psmouse->pktcnt < 4) | |
632 | return PSMOUSE_GOOD_DATA; | |
633 | ||
634 | /* | |
635 | * Full packet accumulated, process it | |
636 | */ | |
637 | ||
638 | switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) { | |
639 | case FSP_PKT_TYPE_ABS: | |
640 | dev_warn(&psmouse->ps2dev.serio->dev, | |
641 | "Unexpected absolute mode packet, ignored.\n"); | |
642 | break; | |
643 | ||
644 | case FSP_PKT_TYPE_NORMAL_OPC: | |
645 | /* on-pad click, filter it if necessary */ | |
646 | if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC) | |
647 | packet[0] &= ~BIT(0); | |
648 | /* fall through */ | |
649 | ||
650 | case FSP_PKT_TYPE_NORMAL: | |
651 | /* normal packet */ | |
652 | /* special packet data translation from on-pad packets */ | |
653 | if (packet[3] != 0) { | |
654 | if (packet[3] & BIT(0)) | |
655 | button_status |= 0x01; /* wheel down */ | |
656 | if (packet[3] & BIT(1)) | |
657 | button_status |= 0x0f; /* wheel up */ | |
658 | if (packet[3] & BIT(2)) | |
659 | button_status |= BIT(5);/* horizontal left */ | |
660 | if (packet[3] & BIT(3)) | |
661 | button_status |= BIT(4);/* horizontal right */ | |
662 | /* push back to packet queue */ | |
663 | if (button_status != 0) | |
664 | packet[3] = button_status; | |
665 | rscroll = (packet[3] >> 4) & 1; | |
666 | lscroll = (packet[3] >> 5) & 1; | |
667 | } | |
668 | /* | |
669 | * Processing wheel up/down and extra button events | |
670 | */ | |
671 | input_report_rel(dev, REL_WHEEL, | |
672 | (int)(packet[3] & 8) - (int)(packet[3] & 7)); | |
673 | input_report_rel(dev, REL_HWHEEL, lscroll - rscroll); | |
674 | input_report_key(dev, BTN_BACK, lscroll); | |
675 | input_report_key(dev, BTN_FORWARD, rscroll); | |
676 | ||
677 | /* | |
678 | * Standard PS/2 Mouse | |
679 | */ | |
680 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
681 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
682 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
683 | ||
684 | rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0; | |
685 | rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0; | |
686 | ||
687 | input_report_rel(dev, REL_X, rel_x); | |
688 | input_report_rel(dev, REL_Y, rel_y); | |
689 | break; | |
690 | } | |
691 | ||
692 | input_sync(dev); | |
693 | ||
694 | fsp_packet_debug(packet); | |
695 | ||
696 | return PSMOUSE_FULL_PACKET; | |
697 | } | |
698 | ||
699 | static int fsp_activate_protocol(struct psmouse *psmouse) | |
700 | { | |
701 | struct fsp_data *pad = psmouse->private; | |
702 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
703 | unsigned char param[2]; | |
704 | int val; | |
705 | ||
706 | /* | |
707 | * Standard procedure to enter FSP Intellimouse mode | |
708 | * (scrolling wheel, 4th and 5th buttons) | |
709 | */ | |
710 | param[0] = 200; | |
711 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
712 | param[0] = 200; | |
713 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
714 | param[0] = 80; | |
715 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
716 | ||
717 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
718 | if (param[0] != 0x04) { | |
719 | dev_err(&psmouse->ps2dev.serio->dev, | |
720 | "Unable to enable 4 bytes packet format.\n"); | |
721 | return -EIO; | |
722 | } | |
723 | ||
724 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) { | |
725 | dev_err(&psmouse->ps2dev.serio->dev, | |
726 | "Unable to read SYSCTL5 register.\n"); | |
727 | return -EIO; | |
728 | } | |
729 | ||
730 | val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8); | |
731 | /* Ensure we are not in absolute mode */ | |
732 | val &= ~FSP_BIT_EN_PKT_G0; | |
733 | if (pad->buttons == 0x06) { | |
734 | /* Left/Middle/Right & Scroll Up/Down/Right/Left */ | |
735 | val |= FSP_BIT_EN_MSID6; | |
736 | } | |
737 | ||
738 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) { | |
739 | dev_err(&psmouse->ps2dev.serio->dev, | |
740 | "Unable to set up required mode bits.\n"); | |
741 | return -EIO; | |
742 | } | |
743 | ||
744 | /* | |
745 | * Enable OPC tags such that driver can tell the difference between | |
746 | * on-pad and real button click | |
747 | */ | |
748 | if (fsp_opc_tag_enable(psmouse, true)) | |
749 | dev_warn(&psmouse->ps2dev.serio->dev, | |
750 | "Failed to enable OPC tag mode.\n"); | |
751 | ||
752 | /* Enable on-pad vertical and horizontal scrolling */ | |
753 | fsp_onpad_vscr(psmouse, true); | |
754 | fsp_onpad_hscr(psmouse, true); | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
759 | int fsp_detect(struct psmouse *psmouse, int set_properties) | |
760 | { | |
761 | int id; | |
762 | ||
763 | if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id)) | |
764 | return -EIO; | |
765 | ||
766 | if (id != 0x01) | |
767 | return -ENODEV; | |
768 | ||
769 | if (set_properties) { | |
770 | psmouse->vendor = "Sentelic"; | |
771 | psmouse->name = "FingerSensingPad"; | |
772 | } | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
777 | static void fsp_reset(struct psmouse *psmouse) | |
778 | { | |
779 | fsp_opc_tag_enable(psmouse, false); | |
780 | fsp_onpad_vscr(psmouse, false); | |
781 | fsp_onpad_hscr(psmouse, false); | |
782 | } | |
783 | ||
784 | static void fsp_disconnect(struct psmouse *psmouse) | |
785 | { | |
786 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, | |
787 | &fsp_attribute_group); | |
788 | ||
789 | fsp_reset(psmouse); | |
790 | kfree(psmouse->private); | |
791 | } | |
792 | ||
793 | static int fsp_reconnect(struct psmouse *psmouse) | |
794 | { | |
795 | int version; | |
796 | ||
797 | if (fsp_detect(psmouse, 0)) | |
798 | return -ENODEV; | |
799 | ||
800 | if (fsp_get_version(psmouse, &version)) | |
801 | return -ENODEV; | |
802 | ||
803 | if (fsp_activate_protocol(psmouse)) | |
804 | return -EIO; | |
805 | ||
806 | return 0; | |
807 | } | |
808 | ||
809 | int fsp_init(struct psmouse *psmouse) | |
810 | { | |
811 | struct fsp_data *priv; | |
812 | int ver, rev, buttons; | |
813 | int error; | |
814 | ||
815 | if (fsp_get_version(psmouse, &ver) || | |
816 | fsp_get_revision(psmouse, &rev) || | |
817 | fsp_get_buttons(psmouse, &buttons)) { | |
818 | return -ENODEV; | |
819 | } | |
820 | ||
821 | printk(KERN_INFO | |
822 | "Finger Sensing Pad, hw: %d.%d.%d, sw: %s, buttons: %d\n", | |
823 | ver >> 4, ver & 0x0F, rev, fsp_drv_ver, buttons & 7); | |
824 | ||
825 | psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL); | |
826 | if (!priv) | |
827 | return -ENOMEM; | |
828 | ||
829 | priv->ver = ver; | |
830 | priv->rev = rev; | |
831 | priv->buttons = buttons; | |
832 | ||
833 | /* enable on-pad click by default */ | |
834 | priv->flags |= FSPDRV_FLAG_EN_OPC; | |
835 | ||
836 | /* Set up various supported input event bits */ | |
837 | __set_bit(BTN_BACK, psmouse->dev->keybit); | |
838 | __set_bit(BTN_FORWARD, psmouse->dev->keybit); | |
839 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
840 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
841 | ||
842 | psmouse->protocol_handler = fsp_process_byte; | |
843 | psmouse->disconnect = fsp_disconnect; | |
844 | psmouse->reconnect = fsp_reconnect; | |
845 | psmouse->cleanup = fsp_reset; | |
846 | psmouse->pktsize = 4; | |
847 | ||
848 | /* set default packet output based on number of buttons we found */ | |
849 | error = fsp_activate_protocol(psmouse); | |
850 | if (error) | |
851 | goto err_out; | |
852 | ||
853 | error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, | |
854 | &fsp_attribute_group); | |
855 | if (error) { | |
856 | dev_err(&psmouse->ps2dev.serio->dev, | |
857 | "Failed to create sysfs attributes (%d)", error); | |
858 | goto err_out; | |
859 | } | |
860 | ||
861 | return 0; | |
862 | ||
863 | err_out: | |
864 | kfree(psmouse->private); | |
865 | psmouse->private = NULL; | |
866 | return error; | |
867 | } |