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16#include <linux/debugfs.h>
17#include <linux/delay.h>
18#include <linux/gpio/consumer.h>
19#include <linux/i2c.h>
20#include <linux/interrupt.h>
21#include <linux/input.h>
22#include <linux/input/mt.h>
23#include <linux/input/touchscreen.h>
24#include <linux/irq.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/ratelimit.h>
28#include <linux/regulator/consumer.h>
29#include <linux/slab.h>
30#include <linux/uaccess.h>
31
32#include <asm/unaligned.h>
33
34#define WORK_REGISTER_THRESHOLD 0x00
35#define WORK_REGISTER_REPORT_RATE 0x08
36#define WORK_REGISTER_GAIN 0x30
37#define WORK_REGISTER_OFFSET 0x31
38#define WORK_REGISTER_NUM_X 0x33
39#define WORK_REGISTER_NUM_Y 0x34
40
41#define PMOD_REGISTER_ACTIVE 0x00
42#define PMOD_REGISTER_HIBERNATE 0x03
43
44#define M09_REGISTER_THRESHOLD 0x80
45#define M09_REGISTER_GAIN 0x92
46#define M09_REGISTER_OFFSET 0x93
47#define M09_REGISTER_NUM_X 0x94
48#define M09_REGISTER_NUM_Y 0x95
49
50#define EV_REGISTER_THRESHOLD 0x40
51#define EV_REGISTER_GAIN 0x41
52#define EV_REGISTER_OFFSET_Y 0x45
53#define EV_REGISTER_OFFSET_X 0x46
54
55#define NO_REGISTER 0xff
56
57#define WORK_REGISTER_OPMODE 0x3c
58#define FACTORY_REGISTER_OPMODE 0x01
59#define PMOD_REGISTER_OPMODE 0xa5
60
61#define TOUCH_EVENT_DOWN 0x00
62#define TOUCH_EVENT_UP 0x01
63#define TOUCH_EVENT_ON 0x02
64#define TOUCH_EVENT_RESERVED 0x03
65
66#define EDT_NAME_LEN 23
67#define EDT_SWITCH_MODE_RETRIES 10
68#define EDT_SWITCH_MODE_DELAY 5
69#define EDT_RAW_DATA_RETRIES 100
70#define EDT_RAW_DATA_DELAY 1000
71
72#define EDT_DEFAULT_NUM_X 1024
73#define EDT_DEFAULT_NUM_Y 1024
74
75enum edt_pmode {
76 EDT_PMODE_NOT_SUPPORTED,
77 EDT_PMODE_HIBERNATE,
78 EDT_PMODE_POWEROFF,
79};
80
81enum edt_ver {
82 EDT_M06,
83 EDT_M09,
84 EDT_M12,
85 EV_FT,
86 GENERIC_FT,
87};
88
89struct edt_reg_addr {
90 int reg_threshold;
91 int reg_report_rate;
92 int reg_gain;
93 int reg_offset;
94 int reg_offset_x;
95 int reg_offset_y;
96 int reg_num_x;
97 int reg_num_y;
98};
99
100struct edt_ft5x06_ts_data {
101 struct i2c_client *client;
102 struct input_dev *input;
103 struct touchscreen_properties prop;
104 u16 num_x;
105 u16 num_y;
106 struct regulator *vcc;
107 struct regulator *iovcc;
108
109 struct gpio_desc *reset_gpio;
110 struct gpio_desc *wake_gpio;
111
112#if defined(CONFIG_DEBUG_FS)
113 struct dentry *debug_dir;
114 u8 *raw_buffer;
115 size_t raw_bufsize;
116#endif
117
118 struct mutex mutex;
119 bool factory_mode;
120 enum edt_pmode suspend_mode;
121 int threshold;
122 int gain;
123 int offset;
124 int offset_x;
125 int offset_y;
126 int report_rate;
127 int max_support_points;
128
129 char name[EDT_NAME_LEN];
130
131 struct edt_reg_addr reg_addr;
132 enum edt_ver version;
133};
134
135struct edt_i2c_chip_data {
136 int max_support_points;
137};
138
139static int edt_ft5x06_ts_readwrite(struct i2c_client *client,
140 u16 wr_len, u8 *wr_buf,
141 u16 rd_len, u8 *rd_buf)
142{
143 struct i2c_msg wrmsg[2];
144 int i = 0;
145 int ret;
146
147 if (wr_len) {
148 wrmsg[i].addr = client->addr;
149 wrmsg[i].flags = 0;
150 wrmsg[i].len = wr_len;
151 wrmsg[i].buf = wr_buf;
152 i++;
153 }
154 if (rd_len) {
155 wrmsg[i].addr = client->addr;
156 wrmsg[i].flags = I2C_M_RD;
157 wrmsg[i].len = rd_len;
158 wrmsg[i].buf = rd_buf;
159 i++;
160 }
161
162 ret = i2c_transfer(client->adapter, wrmsg, i);
163 if (ret < 0)
164 return ret;
165 if (ret != i)
166 return -EIO;
167
168 return 0;
169}
170
171static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata,
172 u8 *buf, int buflen)
173{
174 int i;
175 u8 crc = 0;
176
177 for (i = 0; i < buflen - 1; i++)
178 crc ^= buf[i];
179
180 if (crc != buf[buflen-1]) {
181 dev_err_ratelimited(&tsdata->client->dev,
182 "crc error: 0x%02x expected, got 0x%02x\n",
183 crc, buf[buflen-1]);
184 return false;
185 }
186
187 return true;
188}
189
190static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
191{
192 struct edt_ft5x06_ts_data *tsdata = dev_id;
193 struct device *dev = &tsdata->client->dev;
194 u8 cmd;
195 u8 rdbuf[63];
196 int i, type, x, y, id;
197 int offset, tplen, datalen, crclen;
198 int error;
199
200 switch (tsdata->version) {
201 case EDT_M06:
202 cmd = 0xf9;
203 offset = 5;
204 tplen = 4;
205 crclen = 1;
206 break;
207
208 case EDT_M09:
209 case EDT_M12:
210 case EV_FT:
211 case GENERIC_FT:
212 cmd = 0x0;
213 offset = 3;
214 tplen = 6;
215 crclen = 0;
216 break;
217
218 default:
219 goto out;
220 }
221
222 memset(rdbuf, 0, sizeof(rdbuf));
223 datalen = tplen * tsdata->max_support_points + offset + crclen;
224
225 error = edt_ft5x06_ts_readwrite(tsdata->client,
226 sizeof(cmd), &cmd,
227 datalen, rdbuf);
228 if (error) {
229 dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n",
230 error);
231 goto out;
232 }
233
234
235 if (tsdata->version == EDT_M06) {
236 if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa ||
237 rdbuf[2] != datalen) {
238 dev_err_ratelimited(dev,
239 "Unexpected header: %02x%02x%02x!\n",
240 rdbuf[0], rdbuf[1], rdbuf[2]);
241 goto out;
242 }
243
244 if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen))
245 goto out;
246 }
247
248 for (i = 0; i < tsdata->max_support_points; i++) {
249 u8 *buf = &rdbuf[i * tplen + offset];
250
251 type = buf[0] >> 6;
252
253 if (type == TOUCH_EVENT_RESERVED)
254 continue;
255
256
257 if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN)
258 continue;
259
260 x = get_unaligned_be16(buf) & 0x0fff;
261 y = get_unaligned_be16(buf + 2) & 0x0fff;
262
263 if (tsdata->version == EV_FT)
264 swap(x, y);
265
266 id = (buf[2] >> 4) & 0x0f;
267
268 input_mt_slot(tsdata->input, id);
269 if (input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER,
270 type != TOUCH_EVENT_UP))
271 touchscreen_report_pos(tsdata->input, &tsdata->prop,
272 x, y, true);
273 }
274
275 input_mt_report_pointer_emulation(tsdata->input, true);
276 input_sync(tsdata->input);
277
278out:
279 return IRQ_HANDLED;
280}
281
282static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
283 u8 addr, u8 value)
284{
285 u8 wrbuf[4];
286
287 switch (tsdata->version) {
288 case EDT_M06:
289 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
290 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
291 wrbuf[2] = value;
292 wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2];
293 return edt_ft5x06_ts_readwrite(tsdata->client, 4,
294 wrbuf, 0, NULL);
295
296 case EDT_M09:
297 case EDT_M12:
298 case EV_FT:
299 case GENERIC_FT:
300 wrbuf[0] = addr;
301 wrbuf[1] = value;
302
303 return edt_ft5x06_ts_readwrite(tsdata->client, 2,
304 wrbuf, 0, NULL);
305
306 default:
307 return -EINVAL;
308 }
309}
310
311static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata,
312 u8 addr)
313{
314 u8 wrbuf[2], rdbuf[2];
315 int error;
316
317 switch (tsdata->version) {
318 case EDT_M06:
319 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
320 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
321 wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
322
323 error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2,
324 rdbuf);
325 if (error)
326 return error;
327
328 if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) {
329 dev_err(&tsdata->client->dev,
330 "crc error: 0x%02x expected, got 0x%02x\n",
331 wrbuf[0] ^ wrbuf[1] ^ rdbuf[0],
332 rdbuf[1]);
333 return -EIO;
334 }
335 break;
336
337 case EDT_M09:
338 case EDT_M12:
339 case EV_FT:
340 case GENERIC_FT:
341 wrbuf[0] = addr;
342 error = edt_ft5x06_ts_readwrite(tsdata->client, 1,
343 wrbuf, 1, rdbuf);
344 if (error)
345 return error;
346 break;
347
348 default:
349 return -EINVAL;
350 }
351
352 return rdbuf[0];
353}
354
355struct edt_ft5x06_attribute {
356 struct device_attribute dattr;
357 size_t field_offset;
358 u8 limit_low;
359 u8 limit_high;
360 u8 addr_m06;
361 u8 addr_m09;
362 u8 addr_ev;
363};
364
365#define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, _addr_ev, \
366 _limit_low, _limit_high) \
367 struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \
368 .dattr = __ATTR(_field, _mode, \
369 edt_ft5x06_setting_show, \
370 edt_ft5x06_setting_store), \
371 .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \
372 .addr_m06 = _addr_m06, \
373 .addr_m09 = _addr_m09, \
374 .addr_ev = _addr_ev, \
375 .limit_low = _limit_low, \
376 .limit_high = _limit_high, \
377 }
378
379static ssize_t edt_ft5x06_setting_show(struct device *dev,
380 struct device_attribute *dattr,
381 char *buf)
382{
383 struct i2c_client *client = to_i2c_client(dev);
384 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
385 struct edt_ft5x06_attribute *attr =
386 container_of(dattr, struct edt_ft5x06_attribute, dattr);
387 u8 *field = (u8 *)tsdata + attr->field_offset;
388 int val;
389 size_t count = 0;
390 int error = 0;
391 u8 addr;
392
393 mutex_lock(&tsdata->mutex);
394
395 if (tsdata->factory_mode) {
396 error = -EIO;
397 goto out;
398 }
399
400 switch (tsdata->version) {
401 case EDT_M06:
402 addr = attr->addr_m06;
403 break;
404
405 case EDT_M09:
406 case EDT_M12:
407 case GENERIC_FT:
408 addr = attr->addr_m09;
409 break;
410
411 case EV_FT:
412 addr = attr->addr_ev;
413 break;
414
415 default:
416 error = -ENODEV;
417 goto out;
418 }
419
420 if (addr != NO_REGISTER) {
421 val = edt_ft5x06_register_read(tsdata, addr);
422 if (val < 0) {
423 error = val;
424 dev_err(&tsdata->client->dev,
425 "Failed to fetch attribute %s, error %d\n",
426 dattr->attr.name, error);
427 goto out;
428 }
429 } else {
430 val = *field;
431 }
432
433 if (val != *field) {
434 dev_warn(&tsdata->client->dev,
435 "%s: read (%d) and stored value (%d) differ\n",
436 dattr->attr.name, val, *field);
437 *field = val;
438 }
439
440 count = scnprintf(buf, PAGE_SIZE, "%d\n", val);
441out:
442 mutex_unlock(&tsdata->mutex);
443 return error ?: count;
444}
445
446static ssize_t edt_ft5x06_setting_store(struct device *dev,
447 struct device_attribute *dattr,
448 const char *buf, size_t count)
449{
450 struct i2c_client *client = to_i2c_client(dev);
451 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
452 struct edt_ft5x06_attribute *attr =
453 container_of(dattr, struct edt_ft5x06_attribute, dattr);
454 u8 *field = (u8 *)tsdata + attr->field_offset;
455 unsigned int val;
456 int error;
457 u8 addr;
458
459 mutex_lock(&tsdata->mutex);
460
461 if (tsdata->factory_mode) {
462 error = -EIO;
463 goto out;
464 }
465
466 error = kstrtouint(buf, 0, &val);
467 if (error)
468 goto out;
469
470 if (val < attr->limit_low || val > attr->limit_high) {
471 error = -ERANGE;
472 goto out;
473 }
474
475 switch (tsdata->version) {
476 case EDT_M06:
477 addr = attr->addr_m06;
478 break;
479
480 case EDT_M09:
481 case EDT_M12:
482 case GENERIC_FT:
483 addr = attr->addr_m09;
484 break;
485
486 case EV_FT:
487 addr = attr->addr_ev;
488 break;
489
490 default:
491 error = -ENODEV;
492 goto out;
493 }
494
495 if (addr != NO_REGISTER) {
496 error = edt_ft5x06_register_write(tsdata, addr, val);
497 if (error) {
498 dev_err(&tsdata->client->dev,
499 "Failed to update attribute %s, error: %d\n",
500 dattr->attr.name, error);
501 goto out;
502 }
503 }
504 *field = val;
505
506out:
507 mutex_unlock(&tsdata->mutex);
508 return error ?: count;
509}
510
511
512static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN,
513 M09_REGISTER_GAIN, EV_REGISTER_GAIN, 0, 31);
514
515static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET,
516 M09_REGISTER_OFFSET, NO_REGISTER, 0, 31);
517
518static EDT_ATTR(offset_x, S_IWUSR | S_IRUGO, NO_REGISTER, NO_REGISTER,
519 EV_REGISTER_OFFSET_X, 0, 80);
520
521static EDT_ATTR(offset_y, S_IWUSR | S_IRUGO, NO_REGISTER, NO_REGISTER,
522 EV_REGISTER_OFFSET_Y, 0, 80);
523
524static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,
525 M09_REGISTER_THRESHOLD, EV_REGISTER_THRESHOLD, 0, 255);
526
527static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,
528 NO_REGISTER, NO_REGISTER, 0, 255);
529
530static struct attribute *edt_ft5x06_attrs[] = {
531 &edt_ft5x06_attr_gain.dattr.attr,
532 &edt_ft5x06_attr_offset.dattr.attr,
533 &edt_ft5x06_attr_offset_x.dattr.attr,
534 &edt_ft5x06_attr_offset_y.dattr.attr,
535 &edt_ft5x06_attr_threshold.dattr.attr,
536 &edt_ft5x06_attr_report_rate.dattr.attr,
537 NULL
538};
539
540static const struct attribute_group edt_ft5x06_attr_group = {
541 .attrs = edt_ft5x06_attrs,
542};
543
544static void edt_ft5x06_restore_reg_parameters(struct edt_ft5x06_ts_data *tsdata)
545{
546 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
547
548 edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold,
549 tsdata->threshold);
550 edt_ft5x06_register_write(tsdata, reg_addr->reg_gain,
551 tsdata->gain);
552 if (reg_addr->reg_offset != NO_REGISTER)
553 edt_ft5x06_register_write(tsdata, reg_addr->reg_offset,
554 tsdata->offset);
555 if (reg_addr->reg_offset_x != NO_REGISTER)
556 edt_ft5x06_register_write(tsdata, reg_addr->reg_offset_x,
557 tsdata->offset_x);
558 if (reg_addr->reg_offset_y != NO_REGISTER)
559 edt_ft5x06_register_write(tsdata, reg_addr->reg_offset_y,
560 tsdata->offset_y);
561 if (reg_addr->reg_report_rate != NO_REGISTER)
562 edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate,
563 tsdata->report_rate);
564
565}
566
567#ifdef CONFIG_DEBUG_FS
568static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
569{
570 struct i2c_client *client = tsdata->client;
571 int retries = EDT_SWITCH_MODE_RETRIES;
572 int ret;
573 int error;
574
575 if (tsdata->version != EDT_M06) {
576 dev_err(&client->dev,
577 "No factory mode support for non-M06 devices\n");
578 return -EINVAL;
579 }
580
581 disable_irq(client->irq);
582
583 if (!tsdata->raw_buffer) {
584 tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y *
585 sizeof(u16);
586 tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL);
587 if (!tsdata->raw_buffer) {
588 error = -ENOMEM;
589 goto err_out;
590 }
591 }
592
593
594 error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03);
595 if (error) {
596 dev_err(&client->dev,
597 "failed to switch to factory mode, error %d\n", error);
598 goto err_out;
599 }
600
601 tsdata->factory_mode = true;
602 do {
603 mdelay(EDT_SWITCH_MODE_DELAY);
604
605 ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE);
606 if (ret == 0x03)
607 break;
608 } while (--retries > 0);
609
610 if (retries == 0) {
611 dev_err(&client->dev, "not in factory mode after %dms.\n",
612 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
613 error = -EIO;
614 goto err_out;
615 }
616
617 return 0;
618
619err_out:
620 kfree(tsdata->raw_buffer);
621 tsdata->raw_buffer = NULL;
622 tsdata->factory_mode = false;
623 enable_irq(client->irq);
624
625 return error;
626}
627
628static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
629{
630 struct i2c_client *client = tsdata->client;
631 int retries = EDT_SWITCH_MODE_RETRIES;
632 int ret;
633 int error;
634
635
636 error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1);
637 if (error) {
638 dev_err(&client->dev,
639 "failed to switch to work mode, error: %d\n", error);
640 return error;
641 }
642
643 tsdata->factory_mode = false;
644
645 do {
646 mdelay(EDT_SWITCH_MODE_DELAY);
647
648 ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE);
649 if (ret == 0x01)
650 break;
651 } while (--retries > 0);
652
653 if (retries == 0) {
654 dev_err(&client->dev, "not in work mode after %dms.\n",
655 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
656 tsdata->factory_mode = true;
657 return -EIO;
658 }
659
660 kfree(tsdata->raw_buffer);
661 tsdata->raw_buffer = NULL;
662
663 edt_ft5x06_restore_reg_parameters(tsdata);
664 enable_irq(client->irq);
665
666 return 0;
667}
668
669static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode)
670{
671 struct edt_ft5x06_ts_data *tsdata = data;
672
673 *mode = tsdata->factory_mode;
674
675 return 0;
676};
677
678static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode)
679{
680 struct edt_ft5x06_ts_data *tsdata = data;
681 int retval = 0;
682
683 if (mode > 1)
684 return -ERANGE;
685
686 mutex_lock(&tsdata->mutex);
687
688 if (mode != tsdata->factory_mode) {
689 retval = mode ? edt_ft5x06_factory_mode(tsdata) :
690 edt_ft5x06_work_mode(tsdata);
691 }
692
693 mutex_unlock(&tsdata->mutex);
694
695 return retval;
696};
697
698DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get,
699 edt_ft5x06_debugfs_mode_set, "%llu\n");
700
701static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
702 char __user *buf, size_t count, loff_t *off)
703{
704 struct edt_ft5x06_ts_data *tsdata = file->private_data;
705 struct i2c_client *client = tsdata->client;
706 int retries = EDT_RAW_DATA_RETRIES;
707 int val, i, error;
708 size_t read = 0;
709 int colbytes;
710 char wrbuf[3];
711 u8 *rdbuf;
712
713 if (*off < 0 || *off >= tsdata->raw_bufsize)
714 return 0;
715
716 mutex_lock(&tsdata->mutex);
717
718 if (!tsdata->factory_mode || !tsdata->raw_buffer) {
719 error = -EIO;
720 goto out;
721 }
722
723 error = edt_ft5x06_register_write(tsdata, 0x08, 0x01);
724 if (error) {
725 dev_dbg(&client->dev,
726 "failed to write 0x08 register, error %d\n", error);
727 goto out;
728 }
729
730 do {
731 usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100);
732 val = edt_ft5x06_register_read(tsdata, 0x08);
733 if (val < 1)
734 break;
735 } while (--retries > 0);
736
737 if (val < 0) {
738 error = val;
739 dev_dbg(&client->dev,
740 "failed to read 0x08 register, error %d\n", error);
741 goto out;
742 }
743
744 if (retries == 0) {
745 dev_dbg(&client->dev,
746 "timed out waiting for register to settle\n");
747 error = -ETIMEDOUT;
748 goto out;
749 }
750
751 rdbuf = tsdata->raw_buffer;
752 colbytes = tsdata->num_y * sizeof(u16);
753
754 wrbuf[0] = 0xf5;
755 wrbuf[1] = 0x0e;
756 for (i = 0; i < tsdata->num_x; i++) {
757 wrbuf[2] = i;
758 error = edt_ft5x06_ts_readwrite(tsdata->client,
759 sizeof(wrbuf), wrbuf,
760 colbytes, rdbuf);
761 if (error)
762 goto out;
763
764 rdbuf += colbytes;
765 }
766
767 read = min_t(size_t, count, tsdata->raw_bufsize - *off);
768 if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) {
769 error = -EFAULT;
770 goto out;
771 }
772
773 *off += read;
774out:
775 mutex_unlock(&tsdata->mutex);
776 return error ?: read;
777};
778
779static const struct file_operations debugfs_raw_data_fops = {
780 .open = simple_open,
781 .read = edt_ft5x06_debugfs_raw_data_read,
782};
783
784static void edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
785 const char *debugfs_name)
786{
787 tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL);
788
789 debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x);
790 debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y);
791
792 debugfs_create_file("mode", S_IRUSR | S_IWUSR,
793 tsdata->debug_dir, tsdata, &debugfs_mode_fops);
794 debugfs_create_file("raw_data", S_IRUSR,
795 tsdata->debug_dir, tsdata, &debugfs_raw_data_fops);
796}
797
798static void edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
799{
800 debugfs_remove_recursive(tsdata->debug_dir);
801 kfree(tsdata->raw_buffer);
802}
803
804#else
805
806static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
807{
808 return -ENOSYS;
809}
810
811static void edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
812 const char *debugfs_name)
813{
814}
815
816static void edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
817{
818}
819
820#endif
821
822static int edt_ft5x06_ts_identify(struct i2c_client *client,
823 struct edt_ft5x06_ts_data *tsdata,
824 char *fw_version)
825{
826 u8 rdbuf[EDT_NAME_LEN];
827 char *p;
828 int error;
829 char *model_name = tsdata->name;
830
831
832
833
834
835 memset(rdbuf, 0, sizeof(rdbuf));
836 error = edt_ft5x06_ts_readwrite(client, 1, "\xBB",
837 EDT_NAME_LEN - 1, rdbuf);
838 if (error)
839 return error;
840
841
842
843
844
845 if (!strncasecmp(rdbuf + 1, "EP0", 3)) {
846 tsdata->version = EDT_M06;
847
848
849 rdbuf[EDT_NAME_LEN - 1] = '\0';
850 if (rdbuf[EDT_NAME_LEN - 2] == '$')
851 rdbuf[EDT_NAME_LEN - 2] = '\0';
852
853
854 p = strchr(rdbuf, '*');
855 if (p)
856 *p++ = '\0';
857 strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN);
858 strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
859 } else if (!strncasecmp(rdbuf, "EP0", 3)) {
860 tsdata->version = EDT_M12;
861
862
863 rdbuf[EDT_NAME_LEN - 2] = '\0';
864 if (rdbuf[EDT_NAME_LEN - 3] == '$')
865 rdbuf[EDT_NAME_LEN - 3] = '\0';
866
867
868 p = strchr(rdbuf, '*');
869 if (p)
870 *p++ = '\0';
871 strlcpy(model_name, rdbuf, EDT_NAME_LEN);
872 strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
873 } else {
874
875
876
877
878
879
880
881
882
883 tsdata->version = GENERIC_FT;
884
885 error = edt_ft5x06_ts_readwrite(client, 1, "\xA6",
886 2, rdbuf);
887 if (error)
888 return error;
889
890 strlcpy(fw_version, rdbuf, 2);
891
892 error = edt_ft5x06_ts_readwrite(client, 1, "\xA8",
893 1, rdbuf);
894 if (error)
895 return error;
896
897
898
899
900
901 switch (rdbuf[0]) {
902 case 0x35:
903 case 0x43:
904 case 0x50:
905 case 0x57:
906 case 0x70:
907 tsdata->version = EDT_M09;
908 snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09",
909 rdbuf[0] >> 4, rdbuf[0] & 0x0F);
910 break;
911 case 0xa1:
912 tsdata->version = EDT_M09;
913 snprintf(model_name, EDT_NAME_LEN, "EP%i%i0ML00",
914 rdbuf[0] >> 4, rdbuf[0] & 0x0F);
915 break;
916 case 0x5a:
917 snprintf(model_name, EDT_NAME_LEN, "GKTW50SCED1R0");
918 break;
919 case 0x59:
920 tsdata->version = EV_FT;
921 error = edt_ft5x06_ts_readwrite(client, 1, "\x53",
922 1, rdbuf);
923 if (error)
924 return error;
925 strlcpy(fw_version, rdbuf, 1);
926 snprintf(model_name, EDT_NAME_LEN,
927 "EVERVISION-FT5726NEi");
928 break;
929 default:
930 snprintf(model_name, EDT_NAME_LEN,
931 "generic ft5x06 (%02x)",
932 rdbuf[0]);
933 break;
934 }
935 }
936
937 return 0;
938}
939
940static void edt_ft5x06_ts_get_defaults(struct device *dev,
941 struct edt_ft5x06_ts_data *tsdata)
942{
943 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
944 u32 val;
945 int error;
946
947 error = device_property_read_u32(dev, "threshold", &val);
948 if (!error) {
949 edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val);
950 tsdata->threshold = val;
951 }
952
953 error = device_property_read_u32(dev, "gain", &val);
954 if (!error) {
955 edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val);
956 tsdata->gain = val;
957 }
958
959 error = device_property_read_u32(dev, "offset", &val);
960 if (!error) {
961 if (reg_addr->reg_offset != NO_REGISTER)
962 edt_ft5x06_register_write(tsdata,
963 reg_addr->reg_offset, val);
964 tsdata->offset = val;
965 }
966
967 error = device_property_read_u32(dev, "offset-x", &val);
968 if (!error) {
969 if (reg_addr->reg_offset_x != NO_REGISTER)
970 edt_ft5x06_register_write(tsdata,
971 reg_addr->reg_offset_x, val);
972 tsdata->offset_x = val;
973 }
974
975 error = device_property_read_u32(dev, "offset-y", &val);
976 if (!error) {
977 if (reg_addr->reg_offset_y != NO_REGISTER)
978 edt_ft5x06_register_write(tsdata,
979 reg_addr->reg_offset_y, val);
980 tsdata->offset_y = val;
981 }
982}
983
984static void edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
985{
986 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
987
988 tsdata->threshold = edt_ft5x06_register_read(tsdata,
989 reg_addr->reg_threshold);
990 tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain);
991 if (reg_addr->reg_offset != NO_REGISTER)
992 tsdata->offset =
993 edt_ft5x06_register_read(tsdata, reg_addr->reg_offset);
994 if (reg_addr->reg_offset_x != NO_REGISTER)
995 tsdata->offset_x = edt_ft5x06_register_read(tsdata,
996 reg_addr->reg_offset_x);
997 if (reg_addr->reg_offset_y != NO_REGISTER)
998 tsdata->offset_y = edt_ft5x06_register_read(tsdata,
999 reg_addr->reg_offset_y);
1000 if (reg_addr->reg_report_rate != NO_REGISTER)
1001 tsdata->report_rate = edt_ft5x06_register_read(tsdata,
1002 reg_addr->reg_report_rate);
1003 tsdata->num_x = EDT_DEFAULT_NUM_X;
1004 if (reg_addr->reg_num_x != NO_REGISTER)
1005 tsdata->num_x = edt_ft5x06_register_read(tsdata,
1006 reg_addr->reg_num_x);
1007 tsdata->num_y = EDT_DEFAULT_NUM_Y;
1008 if (reg_addr->reg_num_y != NO_REGISTER)
1009 tsdata->num_y = edt_ft5x06_register_read(tsdata,
1010 reg_addr->reg_num_y);
1011}
1012
1013static void edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
1014{
1015 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
1016
1017 switch (tsdata->version) {
1018 case EDT_M06:
1019 reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD;
1020 reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE;
1021 reg_addr->reg_gain = WORK_REGISTER_GAIN;
1022 reg_addr->reg_offset = WORK_REGISTER_OFFSET;
1023 reg_addr->reg_offset_x = NO_REGISTER;
1024 reg_addr->reg_offset_y = NO_REGISTER;
1025 reg_addr->reg_num_x = WORK_REGISTER_NUM_X;
1026 reg_addr->reg_num_y = WORK_REGISTER_NUM_Y;
1027 break;
1028
1029 case EDT_M09:
1030 case EDT_M12:
1031 reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
1032 reg_addr->reg_report_rate = NO_REGISTER;
1033 reg_addr->reg_gain = M09_REGISTER_GAIN;
1034 reg_addr->reg_offset = M09_REGISTER_OFFSET;
1035 reg_addr->reg_offset_x = NO_REGISTER;
1036 reg_addr->reg_offset_y = NO_REGISTER;
1037 reg_addr->reg_num_x = M09_REGISTER_NUM_X;
1038 reg_addr->reg_num_y = M09_REGISTER_NUM_Y;
1039 break;
1040
1041 case EV_FT:
1042 reg_addr->reg_threshold = EV_REGISTER_THRESHOLD;
1043 reg_addr->reg_report_rate = NO_REGISTER;
1044 reg_addr->reg_gain = EV_REGISTER_GAIN;
1045 reg_addr->reg_offset = NO_REGISTER;
1046 reg_addr->reg_offset_x = EV_REGISTER_OFFSET_X;
1047 reg_addr->reg_offset_y = EV_REGISTER_OFFSET_Y;
1048 reg_addr->reg_num_x = NO_REGISTER;
1049 reg_addr->reg_num_y = NO_REGISTER;
1050 break;
1051
1052 case GENERIC_FT:
1053
1054 reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
1055 reg_addr->reg_report_rate = NO_REGISTER;
1056 reg_addr->reg_gain = M09_REGISTER_GAIN;
1057 reg_addr->reg_offset = M09_REGISTER_OFFSET;
1058 reg_addr->reg_offset_x = NO_REGISTER;
1059 reg_addr->reg_offset_y = NO_REGISTER;
1060 reg_addr->reg_num_x = NO_REGISTER;
1061 reg_addr->reg_num_y = NO_REGISTER;
1062 break;
1063 }
1064}
1065
1066static void edt_ft5x06_disable_regulators(void *arg)
1067{
1068 struct edt_ft5x06_ts_data *data = arg;
1069
1070 regulator_disable(data->vcc);
1071 regulator_disable(data->iovcc);
1072}
1073
1074static int edt_ft5x06_ts_probe(struct i2c_client *client,
1075 const struct i2c_device_id *id)
1076{
1077 const struct edt_i2c_chip_data *chip_data;
1078 struct edt_ft5x06_ts_data *tsdata;
1079 u8 buf[2] = { 0xfc, 0x00 };
1080 struct input_dev *input;
1081 unsigned long irq_flags;
1082 int error;
1083 char fw_version[EDT_NAME_LEN];
1084
1085 dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n");
1086
1087 tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL);
1088 if (!tsdata) {
1089 dev_err(&client->dev, "failed to allocate driver data.\n");
1090 return -ENOMEM;
1091 }
1092
1093 chip_data = device_get_match_data(&client->dev);
1094 if (!chip_data)
1095 chip_data = (const struct edt_i2c_chip_data *)id->driver_data;
1096 if (!chip_data || !chip_data->max_support_points) {
1097 dev_err(&client->dev, "invalid or missing chip data\n");
1098 return -EINVAL;
1099 }
1100
1101 tsdata->max_support_points = chip_data->max_support_points;
1102
1103 tsdata->vcc = devm_regulator_get(&client->dev, "vcc");
1104 if (IS_ERR(tsdata->vcc)) {
1105 error = PTR_ERR(tsdata->vcc);
1106 if (error != -EPROBE_DEFER)
1107 dev_err(&client->dev,
1108 "failed to request regulator: %d\n", error);
1109 return error;
1110 }
1111
1112 tsdata->iovcc = devm_regulator_get(&client->dev, "iovcc");
1113 if (IS_ERR(tsdata->iovcc)) {
1114 error = PTR_ERR(tsdata->iovcc);
1115 if (error != -EPROBE_DEFER)
1116 dev_err(&client->dev,
1117 "failed to request iovcc regulator: %d\n", error);
1118 return error;
1119 }
1120
1121 error = regulator_enable(tsdata->iovcc);
1122 if (error < 0) {
1123 dev_err(&client->dev, "failed to enable iovcc: %d\n", error);
1124 return error;
1125 }
1126
1127
1128 usleep_range(10, 100);
1129
1130 error = regulator_enable(tsdata->vcc);
1131 if (error < 0) {
1132 dev_err(&client->dev, "failed to enable vcc: %d\n", error);
1133 regulator_disable(tsdata->iovcc);
1134 return error;
1135 }
1136
1137 error = devm_add_action_or_reset(&client->dev,
1138 edt_ft5x06_disable_regulators,
1139 tsdata);
1140 if (error)
1141 return error;
1142
1143 tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
1144 "reset", GPIOD_OUT_HIGH);
1145 if (IS_ERR(tsdata->reset_gpio)) {
1146 error = PTR_ERR(tsdata->reset_gpio);
1147 dev_err(&client->dev,
1148 "Failed to request GPIO reset pin, error %d\n", error);
1149 return error;
1150 }
1151
1152 tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev,
1153 "wake", GPIOD_OUT_LOW);
1154 if (IS_ERR(tsdata->wake_gpio)) {
1155 error = PTR_ERR(tsdata->wake_gpio);
1156 dev_err(&client->dev,
1157 "Failed to request GPIO wake pin, error %d\n", error);
1158 return error;
1159 }
1160
1161
1162
1163
1164
1165
1166
1167 if (tsdata->reset_gpio)
1168 tsdata->suspend_mode = EDT_PMODE_POWEROFF;
1169 else if (tsdata->wake_gpio)
1170 tsdata->suspend_mode = EDT_PMODE_HIBERNATE;
1171 else
1172 tsdata->suspend_mode = EDT_PMODE_NOT_SUPPORTED;
1173
1174 if (tsdata->wake_gpio) {
1175 usleep_range(5000, 6000);
1176 gpiod_set_value_cansleep(tsdata->wake_gpio, 1);
1177 }
1178
1179 if (tsdata->reset_gpio) {
1180 usleep_range(5000, 6000);
1181 gpiod_set_value_cansleep(tsdata->reset_gpio, 0);
1182 msleep(300);
1183 }
1184
1185 input = devm_input_allocate_device(&client->dev);
1186 if (!input) {
1187 dev_err(&client->dev, "failed to allocate input device.\n");
1188 return -ENOMEM;
1189 }
1190
1191 mutex_init(&tsdata->mutex);
1192 tsdata->client = client;
1193 tsdata->input = input;
1194 tsdata->factory_mode = false;
1195
1196 error = edt_ft5x06_ts_identify(client, tsdata, fw_version);
1197 if (error) {
1198 dev_err(&client->dev, "touchscreen probe failed\n");
1199 return error;
1200 }
1201
1202
1203
1204
1205
1206 edt_ft5x06_ts_readwrite(tsdata->client, 2, buf, 2, buf);
1207
1208 edt_ft5x06_ts_set_regs(tsdata);
1209 edt_ft5x06_ts_get_defaults(&client->dev, tsdata);
1210 edt_ft5x06_ts_get_parameters(tsdata);
1211
1212 dev_dbg(&client->dev,
1213 "Model \"%s\", Rev. \"%s\", %dx%d sensors\n",
1214 tsdata->name, fw_version, tsdata->num_x, tsdata->num_y);
1215
1216 input->name = tsdata->name;
1217 input->id.bustype = BUS_I2C;
1218 input->dev.parent = &client->dev;
1219
1220 input_set_abs_params(input, ABS_MT_POSITION_X,
1221 0, tsdata->num_x * 64 - 1, 0, 0);
1222 input_set_abs_params(input, ABS_MT_POSITION_Y,
1223 0, tsdata->num_y * 64 - 1, 0, 0);
1224
1225 touchscreen_parse_properties(input, true, &tsdata->prop);
1226
1227 error = input_mt_init_slots(input, tsdata->max_support_points,
1228 INPUT_MT_DIRECT);
1229 if (error) {
1230 dev_err(&client->dev, "Unable to init MT slots.\n");
1231 return error;
1232 }
1233
1234 i2c_set_clientdata(client, tsdata);
1235
1236 irq_flags = irq_get_trigger_type(client->irq);
1237 if (irq_flags == IRQF_TRIGGER_NONE)
1238 irq_flags = IRQF_TRIGGER_FALLING;
1239 irq_flags |= IRQF_ONESHOT;
1240
1241 error = devm_request_threaded_irq(&client->dev, client->irq,
1242 NULL, edt_ft5x06_ts_isr, irq_flags,
1243 client->name, tsdata);
1244 if (error) {
1245 dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
1246 return error;
1247 }
1248
1249 error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group);
1250 if (error)
1251 return error;
1252
1253 error = input_register_device(input);
1254 if (error)
1255 return error;
1256
1257 edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev));
1258
1259 dev_dbg(&client->dev,
1260 "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n",
1261 client->irq,
1262 tsdata->wake_gpio ? desc_to_gpio(tsdata->wake_gpio) : -1,
1263 tsdata->reset_gpio ? desc_to_gpio(tsdata->reset_gpio) : -1);
1264
1265 return 0;
1266}
1267
1268static int edt_ft5x06_ts_remove(struct i2c_client *client)
1269{
1270 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
1271
1272 edt_ft5x06_ts_teardown_debugfs(tsdata);
1273
1274 return 0;
1275}
1276
1277static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev)
1278{
1279 struct i2c_client *client = to_i2c_client(dev);
1280 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
1281 struct gpio_desc *reset_gpio = tsdata->reset_gpio;
1282 int ret;
1283
1284 if (device_may_wakeup(dev))
1285 return 0;
1286
1287 if (tsdata->suspend_mode == EDT_PMODE_NOT_SUPPORTED)
1288 return 0;
1289
1290
1291 ret = edt_ft5x06_register_write(tsdata, PMOD_REGISTER_OPMODE,
1292 PMOD_REGISTER_HIBERNATE);
1293 if (ret)
1294 dev_warn(dev, "Failed to set hibernate mode\n");
1295
1296 if (tsdata->suspend_mode == EDT_PMODE_HIBERNATE)
1297 return 0;
1298
1299
1300
1301
1302
1303
1304
1305 disable_irq(tsdata->client->irq);
1306
1307 gpiod_set_value_cansleep(reset_gpio, 1);
1308 usleep_range(1000, 2000);
1309
1310 ret = regulator_disable(tsdata->vcc);
1311 if (ret)
1312 dev_warn(dev, "Failed to disable vcc\n");
1313 ret = regulator_disable(tsdata->iovcc);
1314 if (ret)
1315 dev_warn(dev, "Failed to disable iovcc\n");
1316
1317 return 0;
1318}
1319
1320static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev)
1321{
1322 struct i2c_client *client = to_i2c_client(dev);
1323 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
1324 int ret = 0;
1325
1326 if (device_may_wakeup(dev))
1327 return 0;
1328
1329 if (tsdata->suspend_mode == EDT_PMODE_NOT_SUPPORTED)
1330 return 0;
1331
1332 if (tsdata->suspend_mode == EDT_PMODE_POWEROFF) {
1333 struct gpio_desc *reset_gpio = tsdata->reset_gpio;
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343 gpiod_set_value_cansleep(reset_gpio, 1);
1344 usleep_range(5000, 6000);
1345
1346 ret = regulator_enable(tsdata->iovcc);
1347 if (ret) {
1348 dev_err(dev, "Failed to enable iovcc\n");
1349 return ret;
1350 }
1351
1352
1353 usleep_range(10, 100);
1354
1355 ret = regulator_enable(tsdata->vcc);
1356 if (ret) {
1357 dev_err(dev, "Failed to enable vcc\n");
1358 regulator_disable(tsdata->iovcc);
1359 return ret;
1360 }
1361
1362 usleep_range(1000, 2000);
1363 gpiod_set_value_cansleep(reset_gpio, 0);
1364 msleep(300);
1365
1366 edt_ft5x06_restore_reg_parameters(tsdata);
1367 enable_irq(tsdata->client->irq);
1368
1369 if (tsdata->factory_mode)
1370 ret = edt_ft5x06_factory_mode(tsdata);
1371 } else {
1372 struct gpio_desc *wake_gpio = tsdata->wake_gpio;
1373
1374 gpiod_set_value_cansleep(wake_gpio, 0);
1375 usleep_range(5000, 6000);
1376 gpiod_set_value_cansleep(wake_gpio, 1);
1377 }
1378
1379
1380 return ret;
1381}
1382
1383static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops,
1384 edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume);
1385
1386static const struct edt_i2c_chip_data edt_ft5x06_data = {
1387 .max_support_points = 5,
1388};
1389
1390static const struct edt_i2c_chip_data edt_ft5506_data = {
1391 .max_support_points = 10,
1392};
1393
1394static const struct edt_i2c_chip_data edt_ft6236_data = {
1395 .max_support_points = 2,
1396};
1397
1398static const struct i2c_device_id edt_ft5x06_ts_id[] = {
1399 { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data },
1400 { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data },
1401 { .name = "ev-ft5726", .driver_data = (long)&edt_ft5506_data },
1402
1403 { .name = "ft6236", .driver_data = (long)&edt_ft6236_data },
1404 { }
1405};
1406MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id);
1407
1408static const struct of_device_id edt_ft5x06_of_match[] = {
1409 { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data },
1410 { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data },
1411 { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data },
1412 { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data },
1413 { .compatible = "evervision,ev-ft5726", .data = &edt_ft5506_data },
1414
1415 { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data },
1416 { }
1417};
1418MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
1419
1420static struct i2c_driver edt_ft5x06_ts_driver = {
1421 .driver = {
1422 .name = "edt_ft5x06",
1423 .of_match_table = edt_ft5x06_of_match,
1424 .pm = &edt_ft5x06_ts_pm_ops,
1425 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
1426 },
1427 .id_table = edt_ft5x06_ts_id,
1428 .probe = edt_ft5x06_ts_probe,
1429 .remove = edt_ft5x06_ts_remove,
1430};
1431
1432module_i2c_driver(edt_ft5x06_ts_driver);
1433
1434MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>");
1435MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver");
1436MODULE_LICENSE("GPL v2");
1437
