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14#include <linux/kernel.h>
15#include <linux/dmi.h>
16#include <linux/firmware.h>
17#include <linux/module.h>
18#include <linux/delay.h>
19#include <linux/irq.h>
20#include <linux/interrupt.h>
21#include <linux/platform_data/x86/soc.h>
22#include <linux/slab.h>
23#include <linux/acpi.h>
24#include <linux/of.h>
25#include <asm/unaligned.h>
26#include "goodix.h"
27
28#define GOODIX_GPIO_INT_NAME "irq"
29#define GOODIX_GPIO_RST_NAME "reset"
30
31#define GOODIX_MAX_HEIGHT 4096
32#define GOODIX_MAX_WIDTH 4096
33#define GOODIX_INT_TRIGGER 1
34#define GOODIX_CONTACT_SIZE 8
35#define GOODIX_MAX_CONTACT_SIZE 9
36#define GOODIX_MAX_CONTACTS 10
37
38#define GOODIX_CONFIG_MIN_LENGTH 186
39#define GOODIX_CONFIG_911_LENGTH 186
40#define GOODIX_CONFIG_967_LENGTH 228
41#define GOODIX_CONFIG_GT9X_LENGTH 240
42
43#define GOODIX_BUFFER_STATUS_READY BIT(7)
44#define GOODIX_HAVE_KEY BIT(4)
45#define GOODIX_BUFFER_STATUS_TIMEOUT 20
46
47#define RESOLUTION_LOC 1
48#define MAX_CONTACTS_LOC 5
49#define TRIGGER_LOC 6
50
51
52#if defined CONFIG_X86 && defined CONFIG_ACPI
53#define ACPI_GPIO_SUPPORT
54#endif
55
56struct goodix_chip_id {
57 const char *id;
58 const struct goodix_chip_data *data;
59};
60
61static int goodix_check_cfg_8(struct goodix_ts_data *ts,
62 const u8 *cfg, int len);
63static int goodix_check_cfg_16(struct goodix_ts_data *ts,
64 const u8 *cfg, int len);
65static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts);
66static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts);
67
68static const struct goodix_chip_data gt1x_chip_data = {
69 .config_addr = GOODIX_GT1X_REG_CONFIG_DATA,
70 .config_len = GOODIX_CONFIG_GT9X_LENGTH,
71 .check_config = goodix_check_cfg_16,
72 .calc_config_checksum = goodix_calc_cfg_checksum_16,
73};
74
75static const struct goodix_chip_data gt911_chip_data = {
76 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
77 .config_len = GOODIX_CONFIG_911_LENGTH,
78 .check_config = goodix_check_cfg_8,
79 .calc_config_checksum = goodix_calc_cfg_checksum_8,
80};
81
82static const struct goodix_chip_data gt967_chip_data = {
83 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
84 .config_len = GOODIX_CONFIG_967_LENGTH,
85 .check_config = goodix_check_cfg_8,
86 .calc_config_checksum = goodix_calc_cfg_checksum_8,
87};
88
89static const struct goodix_chip_data gt9x_chip_data = {
90 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
91 .config_len = GOODIX_CONFIG_GT9X_LENGTH,
92 .check_config = goodix_check_cfg_8,
93 .calc_config_checksum = goodix_calc_cfg_checksum_8,
94};
95
96static const struct goodix_chip_id goodix_chip_ids[] = {
97 { .id = "1151", .data = >1x_chip_data },
98 { .id = "5663", .data = >1x_chip_data },
99 { .id = "5688", .data = >1x_chip_data },
100 { .id = "917S", .data = >1x_chip_data },
101 { .id = "9286", .data = >1x_chip_data },
102
103 { .id = "911", .data = >911_chip_data },
104 { .id = "9271", .data = >911_chip_data },
105 { .id = "9110", .data = >911_chip_data },
106 { .id = "9111", .data = >911_chip_data },
107 { .id = "927", .data = >911_chip_data },
108 { .id = "928", .data = >911_chip_data },
109
110 { .id = "912", .data = >967_chip_data },
111 { .id = "9147", .data = >967_chip_data },
112 { .id = "967", .data = >967_chip_data },
113 { }
114};
115
116static const unsigned long goodix_irq_flags[] = {
117 IRQ_TYPE_EDGE_RISING,
118 IRQ_TYPE_EDGE_FALLING,
119 IRQ_TYPE_LEVEL_LOW,
120 IRQ_TYPE_LEVEL_HIGH,
121};
122
123static const struct dmi_system_id nine_bytes_report[] = {
124#if defined(CONFIG_DMI) && defined(CONFIG_X86)
125 {
126 .ident = "Lenovo YogaBook",
127
128 .matches = {
129 DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9")
130 }
131 },
132#endif
133 {}
134};
135
136
137
138
139static const struct dmi_system_id inverted_x_screen[] = {
140#if defined(CONFIG_DMI) && defined(CONFIG_X86)
141 {
142 .ident = "Cube I15-TC",
143 .matches = {
144 DMI_MATCH(DMI_SYS_VENDOR, "Cube"),
145 DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC")
146 },
147 },
148#endif
149 {}
150};
151
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157
158
159
160int goodix_i2c_read(struct i2c_client *client, u16 reg, u8 *buf, int len)
161{
162 struct i2c_msg msgs[2];
163 __be16 wbuf = cpu_to_be16(reg);
164 int ret;
165
166 msgs[0].flags = 0;
167 msgs[0].addr = client->addr;
168 msgs[0].len = 2;
169 msgs[0].buf = (u8 *)&wbuf;
170
171 msgs[1].flags = I2C_M_RD;
172 msgs[1].addr = client->addr;
173 msgs[1].len = len;
174 msgs[1].buf = buf;
175
176 ret = i2c_transfer(client->adapter, msgs, 2);
177 if (ret >= 0)
178 ret = (ret == ARRAY_SIZE(msgs) ? 0 : -EIO);
179
180 if (ret)
181 dev_err(&client->dev, "Error reading %d bytes from 0x%04x: %d\n",
182 len, reg, ret);
183 return ret;
184}
185
186
187
188
189
190
191
192
193
194int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, int len)
195{
196 u8 *addr_buf;
197 struct i2c_msg msg;
198 int ret;
199
200 addr_buf = kmalloc(len + 2, GFP_KERNEL);
201 if (!addr_buf)
202 return -ENOMEM;
203
204 addr_buf[0] = reg >> 8;
205 addr_buf[1] = reg & 0xFF;
206 memcpy(&addr_buf[2], buf, len);
207
208 msg.flags = 0;
209 msg.addr = client->addr;
210 msg.buf = addr_buf;
211 msg.len = len + 2;
212
213 ret = i2c_transfer(client->adapter, &msg, 1);
214 if (ret >= 0)
215 ret = (ret == 1 ? 0 : -EIO);
216
217 kfree(addr_buf);
218
219 if (ret)
220 dev_err(&client->dev, "Error writing %d bytes to 0x%04x: %d\n",
221 len, reg, ret);
222 return ret;
223}
224
225int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value)
226{
227 return goodix_i2c_write(client, reg, &value, sizeof(value));
228}
229
230static const struct goodix_chip_data *goodix_get_chip_data(const char *id)
231{
232 unsigned int i;
233
234 for (i = 0; goodix_chip_ids[i].id; i++) {
235 if (!strcmp(goodix_chip_ids[i].id, id))
236 return goodix_chip_ids[i].data;
237 }
238
239 return >9x_chip_data;
240}
241
242static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
243{
244 unsigned long max_timeout;
245 int touch_num;
246 int error;
247 u16 addr = GOODIX_READ_COOR_ADDR;
248
249
250
251
252
253 const int header_contact_keycode_size = 1 + ts->contact_size + 1;
254
255
256
257
258
259
260 max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT);
261 do {
262 error = goodix_i2c_read(ts->client, addr, data,
263 header_contact_keycode_size);
264 if (error)
265 return error;
266
267 if (data[0] & GOODIX_BUFFER_STATUS_READY) {
268 touch_num = data[0] & 0x0f;
269 if (touch_num > ts->max_touch_num)
270 return -EPROTO;
271
272 if (touch_num > 1) {
273 addr += header_contact_keycode_size;
274 data += header_contact_keycode_size;
275 error = goodix_i2c_read(ts->client,
276 addr, data,
277 ts->contact_size *
278 (touch_num - 1));
279 if (error)
280 return error;
281 }
282
283 return touch_num;
284 }
285
286 if (data[0] == 0 && ts->firmware_name) {
287 if (goodix_handle_fw_request(ts))
288 return 0;
289 }
290
291 usleep_range(1000, 2000);
292 } while (time_before(jiffies, max_timeout));
293
294
295
296
297
298 return -ENOMSG;
299}
300
301static int goodix_create_pen_input(struct goodix_ts_data *ts)
302{
303 struct device *dev = &ts->client->dev;
304 struct input_dev *input;
305
306 input = devm_input_allocate_device(dev);
307 if (!input)
308 return -ENOMEM;
309
310 input_copy_abs(input, ABS_X, ts->input_dev, ABS_MT_POSITION_X);
311 input_copy_abs(input, ABS_Y, ts->input_dev, ABS_MT_POSITION_Y);
312
313
314
315
316
317 input_abs_set_res(input, ABS_X, 10);
318 input_abs_set_res(input, ABS_Y, 10);
319 input_set_abs_params(input, ABS_PRESSURE, 0, 255, 0, 0);
320
321 input_set_capability(input, EV_KEY, BTN_TOUCH);
322 input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
323 input_set_capability(input, EV_KEY, BTN_STYLUS);
324 input_set_capability(input, EV_KEY, BTN_STYLUS2);
325 __set_bit(INPUT_PROP_DIRECT, input->propbit);
326
327 input->name = "Goodix Active Pen";
328 input->phys = "input/pen";
329 input->id.bustype = BUS_I2C;
330 input->id.vendor = 0x0416;
331 if (kstrtou16(ts->id, 10, &input->id.product))
332 input->id.product = 0x1001;
333 input->id.version = ts->version;
334
335 ts->input_pen = input;
336 return 0;
337}
338
339static void goodix_ts_report_pen_down(struct goodix_ts_data *ts, u8 *data)
340{
341 int input_x, input_y, input_w, error;
342 u8 key_value;
343
344 if (!ts->pen_input_registered) {
345 error = input_register_device(ts->input_pen);
346 ts->pen_input_registered = (error == 0) ? 1 : error;
347 }
348
349 if (ts->pen_input_registered < 0)
350 return;
351
352 if (ts->contact_size == 9) {
353 input_x = get_unaligned_le16(&data[4]);
354 input_y = get_unaligned_le16(&data[6]);
355 input_w = get_unaligned_le16(&data[8]);
356 } else {
357 input_x = get_unaligned_le16(&data[2]);
358 input_y = get_unaligned_le16(&data[4]);
359 input_w = get_unaligned_le16(&data[6]);
360 }
361
362 touchscreen_report_pos(ts->input_pen, &ts->prop, input_x, input_y, false);
363 input_report_abs(ts->input_pen, ABS_PRESSURE, input_w);
364
365 input_report_key(ts->input_pen, BTN_TOUCH, 1);
366 input_report_key(ts->input_pen, BTN_TOOL_PEN, 1);
367
368 if (data[0] & GOODIX_HAVE_KEY) {
369 key_value = data[1 + ts->contact_size];
370 input_report_key(ts->input_pen, BTN_STYLUS, key_value & 0x10);
371 input_report_key(ts->input_pen, BTN_STYLUS2, key_value & 0x20);
372 } else {
373 input_report_key(ts->input_pen, BTN_STYLUS, 0);
374 input_report_key(ts->input_pen, BTN_STYLUS2, 0);
375 }
376
377 input_sync(ts->input_pen);
378}
379
380static void goodix_ts_report_pen_up(struct goodix_ts_data *ts)
381{
382 if (!ts->input_pen)
383 return;
384
385 input_report_key(ts->input_pen, BTN_TOUCH, 0);
386 input_report_key(ts->input_pen, BTN_TOOL_PEN, 0);
387 input_report_key(ts->input_pen, BTN_STYLUS, 0);
388 input_report_key(ts->input_pen, BTN_STYLUS2, 0);
389
390 input_sync(ts->input_pen);
391}
392
393static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data)
394{
395 int id = coor_data[0] & 0x0F;
396 int input_x = get_unaligned_le16(&coor_data[1]);
397 int input_y = get_unaligned_le16(&coor_data[3]);
398 int input_w = get_unaligned_le16(&coor_data[5]);
399
400 input_mt_slot(ts->input_dev, id);
401 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
402 touchscreen_report_pos(ts->input_dev, &ts->prop,
403 input_x, input_y, true);
404 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
405 input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
406}
407
408static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data)
409{
410 int id = coor_data[1] & 0x0F;
411 int input_x = get_unaligned_le16(&coor_data[3]);
412 int input_y = get_unaligned_le16(&coor_data[5]);
413 int input_w = get_unaligned_le16(&coor_data[7]);
414
415 input_mt_slot(ts->input_dev, id);
416 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
417 touchscreen_report_pos(ts->input_dev, &ts->prop,
418 input_x, input_y, true);
419 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
420 input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
421}
422
423static void goodix_ts_release_keys(struct goodix_ts_data *ts)
424{
425 int i;
426
427 for (i = 0; i < GOODIX_MAX_KEYS; i++)
428 input_report_key(ts->input_dev, ts->keymap[i], 0);
429}
430
431static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data)
432{
433 int touch_num;
434 u8 key_value;
435 int i;
436
437 if (data[0] & GOODIX_HAVE_KEY) {
438 touch_num = data[0] & 0x0f;
439 key_value = data[1 + ts->contact_size * touch_num];
440 for (i = 0; i < GOODIX_MAX_KEYS; i++)
441 if (key_value & BIT(i))
442 input_report_key(ts->input_dev,
443 ts->keymap[i], 1);
444 } else {
445 goodix_ts_release_keys(ts);
446 }
447}
448
449
450
451
452
453
454
455
456
457static void goodix_process_events(struct goodix_ts_data *ts)
458{
459 u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
460 int touch_num;
461 int i;
462
463 touch_num = goodix_ts_read_input_report(ts, point_data);
464 if (touch_num < 0)
465 return;
466
467
468 if (touch_num == 1 && (point_data[1] & 0x80)) {
469 goodix_ts_report_pen_down(ts, point_data);
470 goodix_ts_release_keys(ts);
471 goto sync;
472 } else {
473 goodix_ts_report_pen_up(ts);
474 }
475
476 goodix_ts_report_key(ts, point_data);
477
478 for (i = 0; i < touch_num; i++)
479 if (ts->contact_size == 9)
480 goodix_ts_report_touch_9b(ts,
481 &point_data[1 + ts->contact_size * i]);
482 else
483 goodix_ts_report_touch_8b(ts,
484 &point_data[1 + ts->contact_size * i]);
485
486sync:
487 input_mt_sync_frame(ts->input_dev);
488 input_sync(ts->input_dev);
489}
490
491
492
493
494
495
496
497static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
498{
499 struct goodix_ts_data *ts = dev_id;
500
501 goodix_process_events(ts);
502 goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0);
503
504 return IRQ_HANDLED;
505}
506
507static void goodix_free_irq(struct goodix_ts_data *ts)
508{
509 devm_free_irq(&ts->client->dev, ts->client->irq, ts);
510}
511
512static int goodix_request_irq(struct goodix_ts_data *ts)
513{
514 return devm_request_threaded_irq(&ts->client->dev, ts->client->irq,
515 NULL, goodix_ts_irq_handler,
516 ts->irq_flags, ts->client->name, ts);
517}
518
519static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len)
520{
521 int i, raw_cfg_len = len - 2;
522 u8 check_sum = 0;
523
524 for (i = 0; i < raw_cfg_len; i++)
525 check_sum += cfg[i];
526 check_sum = (~check_sum) + 1;
527 if (check_sum != cfg[raw_cfg_len]) {
528 dev_err(&ts->client->dev,
529 "The checksum of the config fw is not correct");
530 return -EINVAL;
531 }
532
533 if (cfg[raw_cfg_len + 1] != 1) {
534 dev_err(&ts->client->dev,
535 "Config fw must have Config_Fresh register set");
536 return -EINVAL;
537 }
538
539 return 0;
540}
541
542static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts)
543{
544 int i, raw_cfg_len = ts->chip->config_len - 2;
545 u8 check_sum = 0;
546
547 for (i = 0; i < raw_cfg_len; i++)
548 check_sum += ts->config[i];
549 check_sum = (~check_sum) + 1;
550
551 ts->config[raw_cfg_len] = check_sum;
552 ts->config[raw_cfg_len + 1] = 1;
553}
554
555static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg,
556 int len)
557{
558 int i, raw_cfg_len = len - 3;
559 u16 check_sum = 0;
560
561 for (i = 0; i < raw_cfg_len; i += 2)
562 check_sum += get_unaligned_be16(&cfg[i]);
563 check_sum = (~check_sum) + 1;
564 if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) {
565 dev_err(&ts->client->dev,
566 "The checksum of the config fw is not correct");
567 return -EINVAL;
568 }
569
570 if (cfg[raw_cfg_len + 2] != 1) {
571 dev_err(&ts->client->dev,
572 "Config fw must have Config_Fresh register set");
573 return -EINVAL;
574 }
575
576 return 0;
577}
578
579static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts)
580{
581 int i, raw_cfg_len = ts->chip->config_len - 3;
582 u16 check_sum = 0;
583
584 for (i = 0; i < raw_cfg_len; i += 2)
585 check_sum += get_unaligned_be16(&ts->config[i]);
586 check_sum = (~check_sum) + 1;
587
588 put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]);
589 ts->config[raw_cfg_len + 2] = 1;
590}
591
592
593
594
595
596
597
598
599static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
600{
601 if (len < GOODIX_CONFIG_MIN_LENGTH ||
602 len > GOODIX_CONFIG_MAX_LENGTH) {
603 dev_err(&ts->client->dev,
604 "The length of the config fw is not correct");
605 return -EINVAL;
606 }
607
608 return ts->chip->check_config(ts, cfg, len);
609}
610
611
612
613
614
615
616
617
618int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
619{
620 int error;
621
622 error = goodix_check_cfg(ts, cfg, len);
623 if (error)
624 return error;
625
626 error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len);
627 if (error)
628 return error;
629
630 dev_dbg(&ts->client->dev, "Config sent successfully.");
631
632
633 usleep_range(10000, 11000);
634
635 return 0;
636}
637
638#ifdef ACPI_GPIO_SUPPORT
639static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
640{
641 acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
642 acpi_status status;
643
644 status = acpi_evaluate_object(handle, "INTI", NULL, NULL);
645 return ACPI_SUCCESS(status) ? 0 : -EIO;
646}
647
648static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
649{
650 acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
651 acpi_status status;
652
653 status = acpi_execute_simple_method(handle, "INTO", value);
654 return ACPI_SUCCESS(status) ? 0 : -EIO;
655}
656#else
657static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
658{
659 dev_err(&ts->client->dev,
660 "%s called on device without ACPI support\n", __func__);
661 return -EINVAL;
662}
663
664static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
665{
666 dev_err(&ts->client->dev,
667 "%s called on device without ACPI support\n", __func__);
668 return -EINVAL;
669}
670#endif
671
672static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value)
673{
674 switch (ts->irq_pin_access_method) {
675 case IRQ_PIN_ACCESS_NONE:
676 dev_err(&ts->client->dev,
677 "%s called without an irq_pin_access_method set\n",
678 __func__);
679 return -EINVAL;
680 case IRQ_PIN_ACCESS_GPIO:
681 return gpiod_direction_output(ts->gpiod_int, value);
682 case IRQ_PIN_ACCESS_ACPI_GPIO:
683
684
685
686
687 return gpiod_direction_output_raw(ts->gpiod_int, value);
688 case IRQ_PIN_ACCESS_ACPI_METHOD:
689 return goodix_pin_acpi_output_method(ts, value);
690 }
691
692 return -EINVAL;
693}
694
695static int goodix_irq_direction_input(struct goodix_ts_data *ts)
696{
697 switch (ts->irq_pin_access_method) {
698 case IRQ_PIN_ACCESS_NONE:
699 dev_err(&ts->client->dev,
700 "%s called without an irq_pin_access_method set\n",
701 __func__);
702 return -EINVAL;
703 case IRQ_PIN_ACCESS_GPIO:
704 return gpiod_direction_input(ts->gpiod_int);
705 case IRQ_PIN_ACCESS_ACPI_GPIO:
706 return gpiod_direction_input(ts->gpiod_int);
707 case IRQ_PIN_ACCESS_ACPI_METHOD:
708 return goodix_pin_acpi_direction_input(ts);
709 }
710
711 return -EINVAL;
712}
713
714int goodix_int_sync(struct goodix_ts_data *ts)
715{
716 int error;
717
718 error = goodix_irq_direction_output(ts, 0);
719 if (error)
720 goto error;
721
722 msleep(50);
723
724 error = goodix_irq_direction_input(ts);
725 if (error)
726 goto error;
727
728 return 0;
729
730error:
731 dev_err(&ts->client->dev, "Controller irq sync failed.\n");
732 return error;
733}
734
735
736
737
738
739
740int goodix_reset_no_int_sync(struct goodix_ts_data *ts)
741{
742 int error;
743
744
745 error = gpiod_direction_output(ts->gpiod_rst, 0);
746 if (error)
747 goto error;
748
749 msleep(20);
750
751
752 error = goodix_irq_direction_output(ts, ts->client->addr == 0x14);
753 if (error)
754 goto error;
755
756 usleep_range(100, 2000);
757
758 error = gpiod_direction_output(ts->gpiod_rst, 1);
759 if (error)
760 goto error;
761
762 usleep_range(6000, 10000);
763
764
765
766
767
768
769 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_GPIO) {
770 error = gpiod_direction_input(ts->gpiod_rst);
771 if (error)
772 goto error;
773 }
774
775 return 0;
776
777error:
778 dev_err(&ts->client->dev, "Controller reset failed.\n");
779 return error;
780}
781
782
783
784
785
786
787static int goodix_reset(struct goodix_ts_data *ts)
788{
789 int error;
790
791 error = goodix_reset_no_int_sync(ts);
792 if (error)
793 return error;
794
795 return goodix_int_sync(ts);
796}
797
798#ifdef ACPI_GPIO_SUPPORT
799static const struct acpi_gpio_params first_gpio = { 0, 0, false };
800static const struct acpi_gpio_params second_gpio = { 1, 0, false };
801
802static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = {
803 { GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 },
804 { GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 },
805 { },
806};
807
808static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = {
809 { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
810 { GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 },
811 { },
812};
813
814static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = {
815 { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
816 { },
817};
818
819static int goodix_resource(struct acpi_resource *ares, void *data)
820{
821 struct goodix_ts_data *ts = data;
822 struct device *dev = &ts->client->dev;
823 struct acpi_resource_gpio *gpio;
824
825 switch (ares->type) {
826 case ACPI_RESOURCE_TYPE_GPIO:
827 gpio = &ares->data.gpio;
828 if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
829 if (ts->gpio_int_idx == -1) {
830 ts->gpio_int_idx = ts->gpio_count;
831 } else {
832 dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n");
833 ts->gpio_int_idx = -2;
834 }
835 }
836 ts->gpio_count++;
837 break;
838 default:
839 break;
840 }
841
842 return 0;
843}
844
845
846
847
848
849
850
851
852static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
853{
854 const struct acpi_gpio_mapping *gpio_mapping = NULL;
855 struct device *dev = &ts->client->dev;
856 LIST_HEAD(resources);
857 int irq, ret;
858
859 ts->gpio_count = 0;
860 ts->gpio_int_idx = -1;
861 ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources,
862 goodix_resource, ts);
863 if (ret < 0) {
864 dev_err(dev, "Error getting ACPI resources: %d\n", ret);
865 return ret;
866 }
867
868 acpi_dev_free_resource_list(&resources);
869
870
871
872
873
874
875
876 if (soc_intel_is_cht() && ts->gpio_count == 2 && ts->gpio_int_idx != -1) {
877 irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 0);
878 if (irq > 0 && irq != ts->client->irq) {
879 dev_warn(dev, "Overriding IRQ %d -> %d\n", ts->client->irq, irq);
880 ts->client->irq = irq;
881 }
882 }
883
884 if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) {
885 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
886 gpio_mapping = acpi_goodix_int_first_gpios;
887 } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) {
888 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
889 gpio_mapping = acpi_goodix_int_last_gpios;
890 } else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 &&
891 acpi_has_method(ACPI_HANDLE(dev), "INTI") &&
892 acpi_has_method(ACPI_HANDLE(dev), "INTO")) {
893 dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n");
894 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD;
895 gpio_mapping = acpi_goodix_reset_only_gpios;
896 } else if (soc_intel_is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) {
897 dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n");
898 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
899 gpio_mapping = acpi_goodix_int_last_gpios;
900 } else {
901 dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n",
902 ts->gpio_count, ts->gpio_int_idx);
903
904
905
906
907 acpi_device_fix_up_power(ACPI_COMPANION(dev));
908 return -EINVAL;
909 }
910
911
912
913
914
915
916
917 ts->gpiod_rst_flags = GPIOD_ASIS;
918
919 return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping);
920}
921#else
922static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
923{
924 return -EINVAL;
925}
926#endif
927
928
929
930
931
932
933static int goodix_get_gpio_config(struct goodix_ts_data *ts)
934{
935 int error;
936 struct device *dev;
937 struct gpio_desc *gpiod;
938 bool added_acpi_mappings = false;
939
940 if (!ts->client)
941 return -EINVAL;
942 dev = &ts->client->dev;
943
944
945
946
947
948 ts->gpiod_rst_flags = GPIOD_IN;
949
950 ts->avdd28 = devm_regulator_get(dev, "AVDD28");
951 if (IS_ERR(ts->avdd28)) {
952 error = PTR_ERR(ts->avdd28);
953 if (error != -EPROBE_DEFER)
954 dev_err(dev,
955 "Failed to get AVDD28 regulator: %d\n", error);
956 return error;
957 }
958
959 ts->vddio = devm_regulator_get(dev, "VDDIO");
960 if (IS_ERR(ts->vddio)) {
961 error = PTR_ERR(ts->vddio);
962 if (error != -EPROBE_DEFER)
963 dev_err(dev,
964 "Failed to get VDDIO regulator: %d\n", error);
965 return error;
966 }
967
968retry_get_irq_gpio:
969
970 gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN);
971 if (IS_ERR(gpiod)) {
972 error = PTR_ERR(gpiod);
973 if (error != -EPROBE_DEFER)
974 dev_err(dev, "Failed to get %s GPIO: %d\n",
975 GOODIX_GPIO_INT_NAME, error);
976 return error;
977 }
978 if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) {
979 added_acpi_mappings = true;
980 if (goodix_add_acpi_gpio_mappings(ts) == 0)
981 goto retry_get_irq_gpio;
982 }
983
984 ts->gpiod_int = gpiod;
985
986
987 gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, ts->gpiod_rst_flags);
988 if (IS_ERR(gpiod)) {
989 error = PTR_ERR(gpiod);
990 if (error != -EPROBE_DEFER)
991 dev_err(dev, "Failed to get %s GPIO: %d\n",
992 GOODIX_GPIO_RST_NAME, error);
993 return error;
994 }
995
996 ts->gpiod_rst = gpiod;
997
998 switch (ts->irq_pin_access_method) {
999 case IRQ_PIN_ACCESS_ACPI_GPIO:
1000
1001
1002
1003
1004
1005
1006
1007
1008 if (!ts->gpiod_int || !ts->gpiod_rst)
1009 ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
1010 break;
1011 case IRQ_PIN_ACCESS_ACPI_METHOD:
1012 if (!ts->gpiod_rst)
1013 ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
1014 break;
1015 default:
1016 if (ts->gpiod_int && ts->gpiod_rst) {
1017 ts->reset_controller_at_probe = true;
1018 ts->load_cfg_from_disk = true;
1019 ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO;
1020 }
1021 }
1022
1023 return 0;
1024}
1025
1026
1027
1028
1029
1030
1031
1032
1033static void goodix_read_config(struct goodix_ts_data *ts)
1034{
1035 int x_max, y_max;
1036 int error;
1037
1038
1039
1040
1041
1042
1043 if (!ts->firmware_name) {
1044 error = goodix_i2c_read(ts->client, ts->chip->config_addr,
1045 ts->config, ts->chip->config_len);
1046 if (error) {
1047 ts->int_trigger_type = GOODIX_INT_TRIGGER;
1048 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1049 return;
1050 }
1051 }
1052
1053 ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03;
1054 ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;
1055
1056 x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]);
1057 y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]);
1058 if (x_max && y_max) {
1059 input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1);
1060 input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1);
1061 }
1062
1063 ts->chip->calc_config_checksum(ts);
1064}
1065
1066
1067
1068
1069
1070
1071static int goodix_read_version(struct goodix_ts_data *ts)
1072{
1073 int error;
1074 u8 buf[6];
1075 char id_str[GOODIX_ID_MAX_LEN + 1];
1076
1077 error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf));
1078 if (error)
1079 return error;
1080
1081 memcpy(id_str, buf, GOODIX_ID_MAX_LEN);
1082 id_str[GOODIX_ID_MAX_LEN] = 0;
1083 strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1);
1084
1085 ts->version = get_unaligned_le16(&buf[4]);
1086
1087 dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id,
1088 ts->version);
1089
1090 return 0;
1091}
1092
1093
1094
1095
1096
1097
1098static int goodix_i2c_test(struct i2c_client *client)
1099{
1100 int retry = 0;
1101 int error;
1102 u8 test;
1103
1104 while (retry++ < 2) {
1105 error = goodix_i2c_read(client, GOODIX_REG_ID, &test, 1);
1106 if (!error)
1107 return 0;
1108
1109 msleep(20);
1110 }
1111
1112 return error;
1113}
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125static int goodix_configure_dev(struct goodix_ts_data *ts)
1126{
1127 int error;
1128 int i;
1129
1130 ts->int_trigger_type = GOODIX_INT_TRIGGER;
1131 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1132
1133 ts->input_dev = devm_input_allocate_device(&ts->client->dev);
1134 if (!ts->input_dev) {
1135 dev_err(&ts->client->dev, "Failed to allocate input device.");
1136 return -ENOMEM;
1137 }
1138
1139 ts->input_dev->name = "Goodix Capacitive TouchScreen";
1140 ts->input_dev->phys = "input/ts";
1141 ts->input_dev->id.bustype = BUS_I2C;
1142 ts->input_dev->id.vendor = 0x0416;
1143 if (kstrtou16(ts->id, 10, &ts->input_dev->id.product))
1144 ts->input_dev->id.product = 0x1001;
1145 ts->input_dev->id.version = ts->version;
1146
1147 ts->input_dev->keycode = ts->keymap;
1148 ts->input_dev->keycodesize = sizeof(ts->keymap[0]);
1149 ts->input_dev->keycodemax = GOODIX_MAX_KEYS;
1150
1151
1152 for (i = 0; i < GOODIX_MAX_KEYS; ++i) {
1153 if (i == 0)
1154 ts->keymap[i] = KEY_LEFTMETA;
1155 else
1156 ts->keymap[i] = KEY_F1 + (i - 1);
1157
1158 input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]);
1159 }
1160
1161 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
1162 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
1163 input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
1164 input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
1165
1166
1167 goodix_read_config(ts);
1168
1169
1170 touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
1171
1172 if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) {
1173 dev_err(&ts->client->dev,
1174 "Invalid config (%d, %d, %d), using defaults\n",
1175 ts->prop.max_x, ts->prop.max_y, ts->max_touch_num);
1176 ts->prop.max_x = GOODIX_MAX_WIDTH - 1;
1177 ts->prop.max_y = GOODIX_MAX_HEIGHT - 1;
1178 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1179 input_abs_set_max(ts->input_dev,
1180 ABS_MT_POSITION_X, ts->prop.max_x);
1181 input_abs_set_max(ts->input_dev,
1182 ABS_MT_POSITION_Y, ts->prop.max_y);
1183 }
1184
1185 if (dmi_check_system(nine_bytes_report)) {
1186 ts->contact_size = 9;
1187
1188 dev_dbg(&ts->client->dev,
1189 "Non-standard 9-bytes report format quirk\n");
1190 }
1191
1192 if (dmi_check_system(inverted_x_screen)) {
1193 ts->prop.invert_x = true;
1194 dev_dbg(&ts->client->dev,
1195 "Applying 'inverted x screen' quirk\n");
1196 }
1197
1198 error = input_mt_init_slots(ts->input_dev, ts->max_touch_num,
1199 INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
1200 if (error) {
1201 dev_err(&ts->client->dev,
1202 "Failed to initialize MT slots: %d", error);
1203 return error;
1204 }
1205
1206 error = input_register_device(ts->input_dev);
1207 if (error) {
1208 dev_err(&ts->client->dev,
1209 "Failed to register input device: %d", error);
1210 return error;
1211 }
1212
1213
1214
1215
1216
1217
1218
1219
1220 error = goodix_create_pen_input(ts);
1221 if (error)
1222 return error;
1223
1224 ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT;
1225 error = goodix_request_irq(ts);
1226 if (error) {
1227 dev_err(&ts->client->dev, "request IRQ failed: %d\n", error);
1228 return error;
1229 }
1230
1231 return 0;
1232}
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243static void goodix_config_cb(const struct firmware *cfg, void *ctx)
1244{
1245 struct goodix_ts_data *ts = ctx;
1246 int error;
1247
1248 if (ts->firmware_name) {
1249 if (!cfg)
1250 goto err_release_cfg;
1251
1252 error = goodix_check_cfg(ts, cfg->data, cfg->size);
1253 if (error)
1254 goto err_release_cfg;
1255
1256 memcpy(ts->config, cfg->data, cfg->size);
1257 } else if (cfg) {
1258
1259 error = goodix_send_cfg(ts, cfg->data, cfg->size);
1260 if (error)
1261 goto err_release_cfg;
1262 }
1263
1264 goodix_configure_dev(ts);
1265
1266err_release_cfg:
1267 release_firmware(cfg);
1268 complete_all(&ts->firmware_loading_complete);
1269}
1270
1271static void goodix_disable_regulators(void *arg)
1272{
1273 struct goodix_ts_data *ts = arg;
1274
1275 regulator_disable(ts->vddio);
1276 regulator_disable(ts->avdd28);
1277}
1278
1279static int goodix_ts_probe(struct i2c_client *client,
1280 const struct i2c_device_id *id)
1281{
1282 struct goodix_ts_data *ts;
1283 const char *cfg_name;
1284 int error;
1285
1286 dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr);
1287
1288 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
1289 dev_err(&client->dev, "I2C check functionality failed.\n");
1290 return -ENXIO;
1291 }
1292
1293 ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
1294 if (!ts)
1295 return -ENOMEM;
1296
1297 ts->client = client;
1298 i2c_set_clientdata(client, ts);
1299 init_completion(&ts->firmware_loading_complete);
1300 ts->contact_size = GOODIX_CONTACT_SIZE;
1301
1302 error = goodix_get_gpio_config(ts);
1303 if (error)
1304 return error;
1305
1306
1307 error = regulator_enable(ts->avdd28);
1308 if (error) {
1309 dev_err(&client->dev,
1310 "Failed to enable AVDD28 regulator: %d\n",
1311 error);
1312 return error;
1313 }
1314
1315 error = regulator_enable(ts->vddio);
1316 if (error) {
1317 dev_err(&client->dev,
1318 "Failed to enable VDDIO regulator: %d\n",
1319 error);
1320 regulator_disable(ts->avdd28);
1321 return error;
1322 }
1323
1324 error = devm_add_action_or_reset(&client->dev,
1325 goodix_disable_regulators, ts);
1326 if (error)
1327 return error;
1328
1329reset:
1330 if (ts->reset_controller_at_probe) {
1331
1332 error = goodix_reset(ts);
1333 if (error)
1334 return error;
1335 }
1336
1337 error = goodix_i2c_test(client);
1338 if (error) {
1339 if (!ts->reset_controller_at_probe &&
1340 ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) {
1341
1342 ts->reset_controller_at_probe = true;
1343 goto reset;
1344 }
1345 dev_err(&client->dev, "I2C communication failure: %d\n", error);
1346 return error;
1347 }
1348
1349 error = goodix_firmware_check(ts);
1350 if (error)
1351 return error;
1352
1353 error = goodix_read_version(ts);
1354 if (error)
1355 return error;
1356
1357 ts->chip = goodix_get_chip_data(ts->id);
1358
1359 if (ts->load_cfg_from_disk) {
1360
1361 error = device_property_read_string(&client->dev,
1362 "goodix,config-name",
1363 &cfg_name);
1364 if (!error)
1365 snprintf(ts->cfg_name, sizeof(ts->cfg_name),
1366 "goodix/%s", cfg_name);
1367 else
1368 snprintf(ts->cfg_name, sizeof(ts->cfg_name),
1369 "goodix_%s_cfg.bin", ts->id);
1370
1371 error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name,
1372 &client->dev, GFP_KERNEL, ts,
1373 goodix_config_cb);
1374 if (error) {
1375 dev_err(&client->dev,
1376 "Failed to invoke firmware loader: %d\n",
1377 error);
1378 return error;
1379 }
1380
1381 return 0;
1382 } else {
1383 error = goodix_configure_dev(ts);
1384 if (error)
1385 return error;
1386 }
1387
1388 return 0;
1389}
1390
1391static int goodix_ts_remove(struct i2c_client *client)
1392{
1393 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1394
1395 if (ts->load_cfg_from_disk)
1396 wait_for_completion(&ts->firmware_loading_complete);
1397
1398 return 0;
1399}
1400
1401static int __maybe_unused goodix_suspend(struct device *dev)
1402{
1403 struct i2c_client *client = to_i2c_client(dev);
1404 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1405 int error;
1406
1407 if (ts->load_cfg_from_disk)
1408 wait_for_completion(&ts->firmware_loading_complete);
1409
1410
1411 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
1412 disable_irq(client->irq);
1413 return 0;
1414 }
1415
1416
1417 goodix_free_irq(ts);
1418
1419
1420 goodix_save_bak_ref(ts);
1421
1422
1423 error = goodix_irq_direction_output(ts, 0);
1424 if (error) {
1425 goodix_request_irq(ts);
1426 return error;
1427 }
1428
1429 usleep_range(5000, 6000);
1430
1431 error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND,
1432 GOODIX_CMD_SCREEN_OFF);
1433 if (error) {
1434 goodix_irq_direction_input(ts);
1435 goodix_request_irq(ts);
1436 return -EAGAIN;
1437 }
1438
1439
1440
1441
1442
1443
1444 msleep(58);
1445 return 0;
1446}
1447
1448static int __maybe_unused goodix_resume(struct device *dev)
1449{
1450 struct i2c_client *client = to_i2c_client(dev);
1451 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1452 u8 config_ver;
1453 int error;
1454
1455 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
1456 enable_irq(client->irq);
1457 return 0;
1458 }
1459
1460
1461
1462
1463
1464 error = goodix_irq_direction_output(ts, 1);
1465 if (error)
1466 return error;
1467
1468 usleep_range(2000, 5000);
1469
1470 error = goodix_int_sync(ts);
1471 if (error)
1472 return error;
1473
1474 error = goodix_i2c_read(ts->client, ts->chip->config_addr,
1475 &config_ver, 1);
1476 if (!error && config_ver != ts->config[0])
1477 dev_info(dev, "Config version mismatch %d != %d, resetting controller\n",
1478 config_ver, ts->config[0]);
1479
1480 if (error != 0 || config_ver != ts->config[0]) {
1481 error = goodix_reset(ts);
1482 if (error)
1483 return error;
1484
1485 error = goodix_send_cfg(ts, ts->config, ts->chip->config_len);
1486 if (error)
1487 return error;
1488 }
1489
1490 error = goodix_request_irq(ts);
1491 if (error)
1492 return error;
1493
1494 return 0;
1495}
1496
1497static SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume);
1498
1499static const struct i2c_device_id goodix_ts_id[] = {
1500 { "GDIX1001:00", 0 },
1501 { }
1502};
1503MODULE_DEVICE_TABLE(i2c, goodix_ts_id);
1504
1505#ifdef CONFIG_ACPI
1506static const struct acpi_device_id goodix_acpi_match[] = {
1507 { "GDIX1001", 0 },
1508 { "GDIX1002", 0 },
1509 { }
1510};
1511MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
1512#endif
1513
1514#ifdef CONFIG_OF
1515static const struct of_device_id goodix_of_match[] = {
1516 { .compatible = "goodix,gt1151" },
1517 { .compatible = "goodix,gt5663" },
1518 { .compatible = "goodix,gt5688" },
1519 { .compatible = "goodix,gt911" },
1520 { .compatible = "goodix,gt9110" },
1521 { .compatible = "goodix,gt912" },
1522 { .compatible = "goodix,gt9147" },
1523 { .compatible = "goodix,gt917s" },
1524 { .compatible = "goodix,gt927" },
1525 { .compatible = "goodix,gt9271" },
1526 { .compatible = "goodix,gt928" },
1527 { .compatible = "goodix,gt9286" },
1528 { .compatible = "goodix,gt967" },
1529 { }
1530};
1531MODULE_DEVICE_TABLE(of, goodix_of_match);
1532#endif
1533
1534static struct i2c_driver goodix_ts_driver = {
1535 .probe = goodix_ts_probe,
1536 .remove = goodix_ts_remove,
1537 .id_table = goodix_ts_id,
1538 .driver = {
1539 .name = "Goodix-TS",
1540 .acpi_match_table = ACPI_PTR(goodix_acpi_match),
1541 .of_match_table = of_match_ptr(goodix_of_match),
1542 .pm = &goodix_pm_ops,
1543 },
1544};
1545module_i2c_driver(goodix_ts_driver);
1546
1547MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
1548MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
1549MODULE_DESCRIPTION("Goodix touchscreen driver");
1550MODULE_LICENSE("GPL v2");
1551