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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. | |
c332e9fc | 5 | * Copyright (C) 2005-2010 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 TL |
23 | #include <linux/input.h> |
24 | #include <linux/ctype.h> | |
25 | #include <linux/libps2.h> | |
26 | #include <linux/serio.h> | |
27 | #include <linux/jiffies.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
fc69f4a6 TL |
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); | |
181d683d DT |
95 | |
96 | ps2_begin_command(ps2dev); | |
fc69f4a6 TL |
97 | |
98 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
99 | goto out; | |
100 | ||
101 | /* should return 0xfe(request for resending) */ | |
102 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
103 | /* should return 0xfc(failed) */ | |
104 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
105 | ||
106 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
107 | goto out; | |
108 | ||
109 | if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) { | |
110 | ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2); | |
111 | } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) { | |
112 | /* swapping is required */ | |
113 | ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2); | |
114 | /* expect 0xfe */ | |
115 | } else { | |
116 | /* swapping isn't necessary */ | |
117 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
118 | /* expect 0xfe */ | |
119 | } | |
120 | /* should return 0xfc(failed) */ | |
121 | ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT); | |
122 | ||
123 | if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0) | |
124 | goto out; | |
125 | ||
126 | *reg_val = param[2]; | |
127 | rc = 0; | |
128 | ||
129 | out: | |
181d683d | 130 | ps2_end_command(ps2dev); |
fc69f4a6 TL |
131 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); |
132 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
133 | dev_dbg(&ps2dev->serio->dev, "READ REG: 0x%02x is 0x%02x (rc = %d)\n", | |
134 | reg_addr, *reg_val, rc); | |
135 | return rc; | |
136 | } | |
137 | ||
138 | static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val) | |
139 | { | |
140 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
141 | unsigned char v; | |
142 | int rc = -1; | |
143 | ||
181d683d | 144 | ps2_begin_command(ps2dev); |
fc69f4a6 TL |
145 | |
146 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
147 | goto out; | |
148 | ||
149 | if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) { | |
150 | /* inversion is required */ | |
151 | ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2); | |
152 | } else { | |
153 | if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) { | |
154 | /* swapping is required */ | |
155 | ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2); | |
156 | } else { | |
157 | /* swapping isn't necessary */ | |
158 | ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2); | |
159 | } | |
160 | } | |
161 | /* write the register address in correct order */ | |
162 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
163 | ||
164 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
165 | return -1; | |
166 | ||
167 | if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) { | |
168 | /* inversion is required */ | |
169 | ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2); | |
170 | } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) { | |
171 | /* swapping is required */ | |
172 | ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2); | |
173 | } else { | |
174 | /* swapping isn't necessary */ | |
175 | ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2); | |
176 | } | |
177 | ||
178 | /* write the register value in correct order */ | |
179 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
180 | rc = 0; | |
181 | ||
182 | out: | |
181d683d | 183 | ps2_end_command(ps2dev); |
fc69f4a6 TL |
184 | dev_dbg(&ps2dev->serio->dev, "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n", |
185 | reg_addr, reg_val, rc); | |
186 | return rc; | |
187 | } | |
188 | ||
189 | /* Enable register clock gating for writing certain registers */ | |
190 | static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable) | |
191 | { | |
192 | int v, nv; | |
193 | ||
194 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1) | |
195 | return -1; | |
196 | ||
197 | if (enable) | |
198 | nv = v | FSP_BIT_EN_REG_CLK; | |
199 | else | |
200 | nv = v & ~FSP_BIT_EN_REG_CLK; | |
201 | ||
202 | /* only write if necessary */ | |
203 | if (nv != v) | |
204 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1) | |
205 | return -1; | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val) | |
211 | { | |
212 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
213 | unsigned char param[3]; | |
214 | int rc = -1; | |
215 | ||
216 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE); | |
217 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
181d683d DT |
218 | |
219 | ps2_begin_command(ps2dev); | |
fc69f4a6 TL |
220 | |
221 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
222 | goto out; | |
223 | ||
224 | ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2); | |
225 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
226 | ||
227 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
228 | goto out; | |
229 | ||
230 | ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2); | |
231 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
232 | ||
233 | /* get the returned result */ | |
234 | if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
235 | goto out; | |
236 | ||
237 | *reg_val = param[2]; | |
238 | rc = 0; | |
239 | ||
240 | out: | |
181d683d | 241 | ps2_end_command(ps2dev); |
fc69f4a6 TL |
242 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); |
243 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
244 | dev_dbg(&ps2dev->serio->dev, "READ PAGE REG: 0x%02x (rc = %d)\n", | |
245 | *reg_val, rc); | |
246 | return rc; | |
247 | } | |
248 | ||
249 | static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val) | |
250 | { | |
251 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
252 | unsigned char v; | |
253 | int rc = -1; | |
254 | ||
181d683d | 255 | ps2_begin_command(ps2dev); |
fc69f4a6 TL |
256 | |
257 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
258 | goto out; | |
259 | ||
260 | ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2); | |
261 | ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2); | |
262 | ||
263 | if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0) | |
264 | return -1; | |
265 | ||
266 | if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) { | |
267 | ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2); | |
268 | } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) { | |
269 | /* swapping is required */ | |
270 | ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2); | |
271 | } else { | |
272 | /* swapping isn't necessary */ | |
273 | ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2); | |
274 | } | |
275 | ||
276 | ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2); | |
277 | rc = 0; | |
278 | ||
279 | out: | |
181d683d | 280 | ps2_end_command(ps2dev); |
fc69f4a6 TL |
281 | dev_dbg(&ps2dev->serio->dev, "WRITE PAGE REG: to 0x%02x (rc = %d)\n", |
282 | reg_val, rc); | |
283 | return rc; | |
284 | } | |
285 | ||
286 | static int fsp_get_version(struct psmouse *psmouse, int *version) | |
287 | { | |
288 | if (fsp_reg_read(psmouse, FSP_REG_VERSION, version)) | |
289 | return -EIO; | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int fsp_get_revision(struct psmouse *psmouse, int *rev) | |
295 | { | |
296 | if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev)) | |
297 | return -EIO; | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
302 | static int fsp_get_buttons(struct psmouse *psmouse, int *btn) | |
303 | { | |
304 | static const int buttons[] = { | |
305 | 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */ | |
306 | 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */ | |
307 | 0x04, /* Left/Middle/Right & Scroll Up/Down */ | |
308 | 0x02, /* Left/Middle/Right */ | |
309 | }; | |
310 | int val; | |
311 | ||
312 | if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS1, &val) == -1) | |
313 | return -EIO; | |
314 | ||
315 | *btn = buttons[(val & 0x30) >> 4]; | |
316 | return 0; | |
317 | } | |
318 | ||
319 | /* Enable on-pad command tag output */ | |
320 | static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable) | |
321 | { | |
322 | int v, nv; | |
323 | int res = 0; | |
324 | ||
325 | if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) { | |
326 | dev_err(&psmouse->ps2dev.serio->dev, "Unable get OPC state.\n"); | |
327 | return -EIO; | |
328 | } | |
329 | ||
330 | if (enable) | |
331 | nv = v | FSP_BIT_EN_OPC_TAG; | |
332 | else | |
333 | nv = v & ~FSP_BIT_EN_OPC_TAG; | |
334 | ||
335 | /* only write if necessary */ | |
336 | if (nv != v) { | |
337 | fsp_reg_write_enable(psmouse, true); | |
338 | res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv); | |
339 | fsp_reg_write_enable(psmouse, false); | |
340 | } | |
341 | ||
342 | if (res != 0) { | |
343 | dev_err(&psmouse->ps2dev.serio->dev, | |
344 | "Unable to enable OPC tag.\n"); | |
345 | res = -EIO; | |
346 | } | |
347 | ||
348 | return res; | |
349 | } | |
350 | ||
351 | static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable) | |
352 | { | |
353 | struct fsp_data *pad = psmouse->private; | |
354 | int val; | |
355 | ||
356 | if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val)) | |
357 | return -EIO; | |
358 | ||
359 | pad->vscroll = enable; | |
360 | ||
361 | if (enable) | |
362 | val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE); | |
363 | else | |
364 | val &= ~FSP_BIT_FIX_VSCR; | |
365 | ||
366 | if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val)) | |
367 | return -EIO; | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable) | |
373 | { | |
374 | struct fsp_data *pad = psmouse->private; | |
375 | int val, v2; | |
376 | ||
377 | if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val)) | |
378 | return -EIO; | |
379 | ||
380 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2)) | |
381 | return -EIO; | |
382 | ||
383 | pad->hscroll = enable; | |
384 | ||
385 | if (enable) { | |
386 | val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE); | |
387 | v2 |= FSP_BIT_EN_MSID6; | |
388 | } else { | |
389 | val &= ~FSP_BIT_FIX_HSCR; | |
390 | v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8); | |
391 | } | |
392 | ||
393 | if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val)) | |
394 | return -EIO; | |
395 | ||
396 | /* reconfigure horizontal scrolling packet output */ | |
397 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2)) | |
398 | return -EIO; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Write device specific initial parameters. | |
405 | * | |
406 | * ex: 0xab 0xcd - write oxcd into register 0xab | |
407 | */ | |
408 | static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data, | |
409 | const char *buf, size_t count) | |
410 | { | |
411 | unsigned long reg, val; | |
412 | char *rest; | |
413 | ssize_t retval; | |
414 | ||
415 | reg = simple_strtoul(buf, &rest, 16); | |
416 | if (rest == buf || *rest != ' ' || reg > 0xff) | |
417 | return -EINVAL; | |
418 | ||
419 | if (strict_strtoul(rest + 1, 16, &val) || val > 0xff) | |
420 | return -EINVAL; | |
421 | ||
422 | if (fsp_reg_write_enable(psmouse, true)) | |
423 | return -EIO; | |
424 | ||
425 | retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count; | |
426 | ||
427 | fsp_reg_write_enable(psmouse, false); | |
428 | ||
429 | return count; | |
430 | } | |
431 | ||
432 | PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg); | |
433 | ||
434 | static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse, | |
435 | void *data, char *buf) | |
436 | { | |
437 | struct fsp_data *pad = psmouse->private; | |
438 | ||
439 | return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val); | |
440 | } | |
441 | ||
442 | /* | |
443 | * Read a register from device. | |
444 | * | |
445 | * ex: 0xab -- read content from register 0xab | |
446 | */ | |
447 | static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data, | |
448 | const char *buf, size_t count) | |
449 | { | |
450 | struct fsp_data *pad = psmouse->private; | |
451 | unsigned long reg; | |
452 | int val; | |
453 | ||
454 | if (strict_strtoul(buf, 16, ®) || reg > 0xff) | |
455 | return -EINVAL; | |
456 | ||
457 | if (fsp_reg_read(psmouse, reg, &val)) | |
458 | return -EIO; | |
459 | ||
460 | pad->last_reg = reg; | |
461 | pad->last_val = val; | |
462 | ||
463 | return count; | |
464 | } | |
465 | ||
466 | PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL, | |
467 | fsp_attr_show_getreg, fsp_attr_set_getreg); | |
468 | ||
469 | static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse, | |
470 | void *data, char *buf) | |
471 | { | |
472 | int val = 0; | |
473 | ||
474 | if (fsp_page_reg_read(psmouse, &val)) | |
475 | return -EIO; | |
476 | ||
477 | return sprintf(buf, "%02x\n", val); | |
478 | } | |
479 | ||
480 | static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data, | |
481 | const char *buf, size_t count) | |
482 | { | |
483 | unsigned long val; | |
484 | ||
485 | if (strict_strtoul(buf, 16, &val) || val > 0xff) | |
486 | return -EINVAL; | |
487 | ||
488 | if (fsp_page_reg_write(psmouse, val)) | |
489 | return -EIO; | |
490 | ||
491 | return count; | |
492 | } | |
493 | ||
494 | PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL, | |
495 | fsp_attr_show_pagereg, fsp_attr_set_pagereg); | |
496 | ||
497 | static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse, | |
498 | void *data, char *buf) | |
499 | { | |
500 | struct fsp_data *pad = psmouse->private; | |
501 | ||
502 | return sprintf(buf, "%d\n", pad->vscroll); | |
503 | } | |
504 | ||
505 | static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data, | |
506 | const char *buf, size_t count) | |
507 | { | |
508 | unsigned long val; | |
509 | ||
510 | if (strict_strtoul(buf, 10, &val) || val > 1) | |
511 | return -EINVAL; | |
512 | ||
513 | fsp_onpad_vscr(psmouse, val); | |
514 | ||
515 | return count; | |
516 | } | |
517 | ||
518 | PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL, | |
519 | fsp_attr_show_vscroll, fsp_attr_set_vscroll); | |
520 | ||
521 | static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse, | |
522 | void *data, char *buf) | |
523 | { | |
524 | struct fsp_data *pad = psmouse->private; | |
525 | ||
526 | return sprintf(buf, "%d\n", pad->hscroll); | |
527 | } | |
528 | ||
529 | static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data, | |
530 | const char *buf, size_t count) | |
531 | { | |
532 | unsigned long val; | |
533 | ||
534 | if (strict_strtoul(buf, 10, &val) || val > 1) | |
535 | return -EINVAL; | |
536 | ||
537 | fsp_onpad_hscr(psmouse, val); | |
538 | ||
539 | return count; | |
540 | } | |
541 | ||
542 | PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL, | |
543 | fsp_attr_show_hscroll, fsp_attr_set_hscroll); | |
544 | ||
545 | static ssize_t fsp_attr_show_flags(struct psmouse *psmouse, | |
546 | void *data, char *buf) | |
547 | { | |
548 | struct fsp_data *pad = psmouse->private; | |
549 | ||
550 | return sprintf(buf, "%c\n", | |
551 | pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c'); | |
552 | } | |
553 | ||
554 | static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data, | |
555 | const char *buf, size_t count) | |
556 | { | |
557 | struct fsp_data *pad = psmouse->private; | |
558 | size_t i; | |
559 | ||
560 | for (i = 0; i < count; i++) { | |
561 | switch (buf[i]) { | |
562 | case 'C': | |
563 | pad->flags |= FSPDRV_FLAG_EN_OPC; | |
564 | break; | |
565 | case 'c': | |
566 | pad->flags &= ~FSPDRV_FLAG_EN_OPC; | |
567 | break; | |
568 | default: | |
569 | return -EINVAL; | |
570 | } | |
571 | } | |
572 | return count; | |
573 | } | |
574 | ||
575 | PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL, | |
576 | fsp_attr_show_flags, fsp_attr_set_flags); | |
577 | ||
578 | static ssize_t fsp_attr_show_ver(struct psmouse *psmouse, | |
579 | void *data, char *buf) | |
580 | { | |
581 | return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver); | |
582 | } | |
583 | ||
584 | PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver); | |
585 | ||
586 | static struct attribute *fsp_attributes[] = { | |
587 | &psmouse_attr_setreg.dattr.attr, | |
588 | &psmouse_attr_getreg.dattr.attr, | |
589 | &psmouse_attr_page.dattr.attr, | |
590 | &psmouse_attr_vscroll.dattr.attr, | |
591 | &psmouse_attr_hscroll.dattr.attr, | |
592 | &psmouse_attr_flags.dattr.attr, | |
593 | &psmouse_attr_ver.dattr.attr, | |
594 | NULL | |
595 | }; | |
596 | ||
597 | static struct attribute_group fsp_attribute_group = { | |
598 | .attrs = fsp_attributes, | |
599 | }; | |
600 | ||
601 | #ifdef FSP_DEBUG | |
602 | static void fsp_packet_debug(unsigned char packet[]) | |
603 | { | |
604 | static unsigned int ps2_packet_cnt; | |
605 | static unsigned int ps2_last_second; | |
606 | unsigned int jiffies_msec; | |
607 | ||
608 | ps2_packet_cnt++; | |
609 | jiffies_msec = jiffies_to_msecs(jiffies); | |
b5d21704 DT |
610 | psmouse_dbg(psmouse, |
611 | "%08dms PS/2 packets: %02x, %02x, %02x, %02x\n", | |
612 | jiffies_msec, packet[0], packet[1], packet[2], packet[3]); | |
fc69f4a6 TL |
613 | |
614 | if (jiffies_msec - ps2_last_second > 1000) { | |
b5d21704 | 615 | psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt); |
fc69f4a6 TL |
616 | ps2_packet_cnt = 0; |
617 | ps2_last_second = jiffies_msec; | |
618 | } | |
619 | } | |
620 | #else | |
621 | static void fsp_packet_debug(unsigned char packet[]) | |
622 | { | |
623 | } | |
624 | #endif | |
625 | ||
626 | static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse) | |
627 | { | |
628 | struct input_dev *dev = psmouse->dev; | |
629 | struct fsp_data *ad = psmouse->private; | |
630 | unsigned char *packet = psmouse->packet; | |
631 | unsigned char button_status = 0, lscroll = 0, rscroll = 0; | |
632 | int rel_x, rel_y; | |
633 | ||
634 | if (psmouse->pktcnt < 4) | |
635 | return PSMOUSE_GOOD_DATA; | |
636 | ||
637 | /* | |
638 | * Full packet accumulated, process it | |
639 | */ | |
640 | ||
641 | switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) { | |
642 | case FSP_PKT_TYPE_ABS: | |
643 | dev_warn(&psmouse->ps2dev.serio->dev, | |
644 | "Unexpected absolute mode packet, ignored.\n"); | |
645 | break; | |
646 | ||
647 | case FSP_PKT_TYPE_NORMAL_OPC: | |
648 | /* on-pad click, filter it if necessary */ | |
649 | if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC) | |
650 | packet[0] &= ~BIT(0); | |
651 | /* fall through */ | |
652 | ||
653 | case FSP_PKT_TYPE_NORMAL: | |
654 | /* normal packet */ | |
655 | /* special packet data translation from on-pad packets */ | |
656 | if (packet[3] != 0) { | |
657 | if (packet[3] & BIT(0)) | |
658 | button_status |= 0x01; /* wheel down */ | |
659 | if (packet[3] & BIT(1)) | |
660 | button_status |= 0x0f; /* wheel up */ | |
661 | if (packet[3] & BIT(2)) | |
c332e9fc | 662 | button_status |= BIT(4);/* horizontal left */ |
fc69f4a6 | 663 | if (packet[3] & BIT(3)) |
c332e9fc | 664 | button_status |= BIT(5);/* horizontal right */ |
fc69f4a6 TL |
665 | /* push back to packet queue */ |
666 | if (button_status != 0) | |
667 | packet[3] = button_status; | |
668 | rscroll = (packet[3] >> 4) & 1; | |
669 | lscroll = (packet[3] >> 5) & 1; | |
670 | } | |
671 | /* | |
672 | * Processing wheel up/down and extra button events | |
673 | */ | |
674 | input_report_rel(dev, REL_WHEEL, | |
675 | (int)(packet[3] & 8) - (int)(packet[3] & 7)); | |
676 | input_report_rel(dev, REL_HWHEEL, lscroll - rscroll); | |
677 | input_report_key(dev, BTN_BACK, lscroll); | |
678 | input_report_key(dev, BTN_FORWARD, rscroll); | |
679 | ||
680 | /* | |
681 | * Standard PS/2 Mouse | |
682 | */ | |
683 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
684 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
685 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
686 | ||
687 | rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0; | |
688 | rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0; | |
689 | ||
690 | input_report_rel(dev, REL_X, rel_x); | |
691 | input_report_rel(dev, REL_Y, rel_y); | |
692 | break; | |
693 | } | |
694 | ||
695 | input_sync(dev); | |
696 | ||
697 | fsp_packet_debug(packet); | |
698 | ||
699 | return PSMOUSE_FULL_PACKET; | |
700 | } | |
701 | ||
702 | static int fsp_activate_protocol(struct psmouse *psmouse) | |
703 | { | |
704 | struct fsp_data *pad = psmouse->private; | |
705 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
706 | unsigned char param[2]; | |
707 | int val; | |
708 | ||
709 | /* | |
710 | * Standard procedure to enter FSP Intellimouse mode | |
711 | * (scrolling wheel, 4th and 5th buttons) | |
712 | */ | |
713 | param[0] = 200; | |
714 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
715 | param[0] = 200; | |
716 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
717 | param[0] = 80; | |
718 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
719 | ||
720 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
721 | if (param[0] != 0x04) { | |
722 | dev_err(&psmouse->ps2dev.serio->dev, | |
723 | "Unable to enable 4 bytes packet format.\n"); | |
724 | return -EIO; | |
725 | } | |
726 | ||
727 | if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) { | |
728 | dev_err(&psmouse->ps2dev.serio->dev, | |
729 | "Unable to read SYSCTL5 register.\n"); | |
730 | return -EIO; | |
731 | } | |
732 | ||
733 | val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8); | |
734 | /* Ensure we are not in absolute mode */ | |
735 | val &= ~FSP_BIT_EN_PKT_G0; | |
736 | if (pad->buttons == 0x06) { | |
737 | /* Left/Middle/Right & Scroll Up/Down/Right/Left */ | |
738 | val |= FSP_BIT_EN_MSID6; | |
739 | } | |
740 | ||
741 | if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) { | |
742 | dev_err(&psmouse->ps2dev.serio->dev, | |
743 | "Unable to set up required mode bits.\n"); | |
744 | return -EIO; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Enable OPC tags such that driver can tell the difference between | |
749 | * on-pad and real button click | |
750 | */ | |
751 | if (fsp_opc_tag_enable(psmouse, true)) | |
752 | dev_warn(&psmouse->ps2dev.serio->dev, | |
753 | "Failed to enable OPC tag mode.\n"); | |
754 | ||
755 | /* Enable on-pad vertical and horizontal scrolling */ | |
756 | fsp_onpad_vscr(psmouse, true); | |
757 | fsp_onpad_hscr(psmouse, true); | |
758 | ||
759 | return 0; | |
760 | } | |
761 | ||
b7802c5c | 762 | int fsp_detect(struct psmouse *psmouse, bool set_properties) |
fc69f4a6 TL |
763 | { |
764 | int id; | |
765 | ||
766 | if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id)) | |
767 | return -EIO; | |
768 | ||
769 | if (id != 0x01) | |
770 | return -ENODEV; | |
771 | ||
772 | if (set_properties) { | |
773 | psmouse->vendor = "Sentelic"; | |
774 | psmouse->name = "FingerSensingPad"; | |
775 | } | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | static void fsp_reset(struct psmouse *psmouse) | |
781 | { | |
782 | fsp_opc_tag_enable(psmouse, false); | |
783 | fsp_onpad_vscr(psmouse, false); | |
784 | fsp_onpad_hscr(psmouse, false); | |
785 | } | |
786 | ||
787 | static void fsp_disconnect(struct psmouse *psmouse) | |
788 | { | |
789 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, | |
790 | &fsp_attribute_group); | |
791 | ||
792 | fsp_reset(psmouse); | |
793 | kfree(psmouse->private); | |
794 | } | |
795 | ||
796 | static int fsp_reconnect(struct psmouse *psmouse) | |
797 | { | |
798 | int version; | |
799 | ||
800 | if (fsp_detect(psmouse, 0)) | |
801 | return -ENODEV; | |
802 | ||
803 | if (fsp_get_version(psmouse, &version)) | |
804 | return -ENODEV; | |
805 | ||
806 | if (fsp_activate_protocol(psmouse)) | |
807 | return -EIO; | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | int fsp_init(struct psmouse *psmouse) | |
813 | { | |
814 | struct fsp_data *priv; | |
815 | int ver, rev, buttons; | |
816 | int error; | |
817 | ||
818 | if (fsp_get_version(psmouse, &ver) || | |
819 | fsp_get_revision(psmouse, &rev) || | |
820 | fsp_get_buttons(psmouse, &buttons)) { | |
821 | return -ENODEV; | |
822 | } | |
823 | ||
b5d21704 DT |
824 | psmouse_info(psmouse, |
825 | "Finger Sensing Pad, hw: %d.%d.%d, sw: %s, buttons: %d\n", | |
826 | ver >> 4, ver & 0x0F, rev, fsp_drv_ver, buttons & 7); | |
fc69f4a6 TL |
827 | |
828 | psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL); | |
829 | if (!priv) | |
830 | return -ENOMEM; | |
831 | ||
832 | priv->ver = ver; | |
833 | priv->rev = rev; | |
834 | priv->buttons = buttons; | |
835 | ||
836 | /* enable on-pad click by default */ | |
837 | priv->flags |= FSPDRV_FLAG_EN_OPC; | |
838 | ||
839 | /* Set up various supported input event bits */ | |
315eb996 | 840 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
fc69f4a6 TL |
841 | __set_bit(BTN_BACK, psmouse->dev->keybit); |
842 | __set_bit(BTN_FORWARD, psmouse->dev->keybit); | |
843 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
844 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
845 | ||
846 | psmouse->protocol_handler = fsp_process_byte; | |
847 | psmouse->disconnect = fsp_disconnect; | |
848 | psmouse->reconnect = fsp_reconnect; | |
849 | psmouse->cleanup = fsp_reset; | |
850 | psmouse->pktsize = 4; | |
851 | ||
852 | /* set default packet output based on number of buttons we found */ | |
853 | error = fsp_activate_protocol(psmouse); | |
854 | if (error) | |
855 | goto err_out; | |
856 | ||
857 | error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, | |
858 | &fsp_attribute_group); | |
859 | if (error) { | |
860 | dev_err(&psmouse->ps2dev.serio->dev, | |
861 | "Failed to create sysfs attributes (%d)", error); | |
862 | goto err_out; | |
863 | } | |
864 | ||
865 | return 0; | |
866 | ||
867 | err_out: | |
868 | kfree(psmouse->private); | |
869 | psmouse->private = NULL; | |
870 | return error; | |
871 | } |