1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for AUO in-cell touchscreens
4 *
5 * Copyright (c) 2011 Heiko Stuebner <heiko@sntech.de>
6 *
7 * loosely based on auo_touch.c from Dell Streak vendor-kernel
8 *
9 * Copyright (c) 2008 QUALCOMM Incorporated.
10 * Copyright (c) 2008 QUALCOMM USA, INC.
11 */
12
13 #include <linux/err.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/interrupt.h>
17 #include <linux/slab.h>
18 #include <linux/input.h>
19 #include <linux/jiffies.h>
20 #include <linux/i2c.h>
21 #include <linux/mutex.h>
22 #include <linux/delay.h>
23 #include <linux/gpio/consumer.h>
24 #include <linux/of.h>
25 #include <linux/property.h>
26
27 /*
28 * Coordinate calculation:
29 * X1 = X1_LSB + X1_MSB*256
30 * Y1 = Y1_LSB + Y1_MSB*256
31 * X2 = X2_LSB + X2_MSB*256
32 * Y2 = Y2_LSB + Y2_MSB*256
33 */
34 #define AUO_PIXCIR_REG_X1_LSB 0x00
35 #define AUO_PIXCIR_REG_X1_MSB 0x01
36 #define AUO_PIXCIR_REG_Y1_LSB 0x02
37 #define AUO_PIXCIR_REG_Y1_MSB 0x03
38 #define AUO_PIXCIR_REG_X2_LSB 0x04
39 #define AUO_PIXCIR_REG_X2_MSB 0x05
40 #define AUO_PIXCIR_REG_Y2_LSB 0x06
41 #define AUO_PIXCIR_REG_Y2_MSB 0x07
42
43 #define AUO_PIXCIR_REG_STRENGTH 0x0d
44 #define AUO_PIXCIR_REG_STRENGTH_X1_LSB 0x0e
45 #define AUO_PIXCIR_REG_STRENGTH_X1_MSB 0x0f
46
47 #define AUO_PIXCIR_REG_RAW_DATA_X 0x2b
48 #define AUO_PIXCIR_REG_RAW_DATA_Y 0x4f
49
50 #define AUO_PIXCIR_REG_X_SENSITIVITY 0x6f
51 #define AUO_PIXCIR_REG_Y_SENSITIVITY 0x70
52 #define AUO_PIXCIR_REG_INT_SETTING 0x71
53 #define AUO_PIXCIR_REG_INT_WIDTH 0x72
54 #define AUO_PIXCIR_REG_POWER_MODE 0x73
55
56 #define AUO_PIXCIR_REG_VERSION 0x77
57 #define AUO_PIXCIR_REG_CALIBRATE 0x78
58
59 #define AUO_PIXCIR_REG_TOUCHAREA_X1 0x1e
60 #define AUO_PIXCIR_REG_TOUCHAREA_Y1 0x1f
61 #define AUO_PIXCIR_REG_TOUCHAREA_X2 0x20
62 #define AUO_PIXCIR_REG_TOUCHAREA_Y2 0x21
63
64 #define AUO_PIXCIR_REG_EEPROM_CALIB_X 0x42
65 #define AUO_PIXCIR_REG_EEPROM_CALIB_Y 0xad
66
67 #define AUO_PIXCIR_INT_TPNUM_MASK 0xe0
68 #define AUO_PIXCIR_INT_TPNUM_SHIFT 5
69 #define AUO_PIXCIR_INT_RELEASE (1 << 4)
70 #define AUO_PIXCIR_INT_ENABLE (1 << 3)
71 #define AUO_PIXCIR_INT_POL_HIGH (1 << 2)
72
73 /*
74 * Interrupt modes:
75 * periodical: interrupt is asserted periodicaly
76 * compare coordinates: interrupt is asserted when coordinates change
77 * indicate touch: interrupt is asserted during touch
78 */
79 #define AUO_PIXCIR_INT_PERIODICAL 0x00
80 #define AUO_PIXCIR_INT_COMP_COORD 0x01
81 #define AUO_PIXCIR_INT_TOUCH_IND 0x02
82 #define AUO_PIXCIR_INT_MODE_MASK 0x03
83
84 /*
85 * Power modes:
86 * active: scan speed 60Hz
87 * sleep: scan speed 10Hz can be auto-activated, wakeup on 1st touch
88 * deep sleep: scan speed 1Hz can only be entered or left manually.
89 */
90 #define AUO_PIXCIR_POWER_ACTIVE 0x00
91 #define AUO_PIXCIR_POWER_SLEEP 0x01
92 #define AUO_PIXCIR_POWER_DEEP_SLEEP 0x02
93 #define AUO_PIXCIR_POWER_MASK 0x03
94
95 #define AUO_PIXCIR_POWER_ALLOW_SLEEP (1 << 2)
96 #define AUO_PIXCIR_POWER_IDLE_TIME(ms) ((ms & 0xf) << 4)
97
98 #define AUO_PIXCIR_CALIBRATE 0x03
99
100 #define AUO_PIXCIR_EEPROM_CALIB_X_LEN 62
101 #define AUO_PIXCIR_EEPROM_CALIB_Y_LEN 36
102
103 #define AUO_PIXCIR_RAW_DATA_X_LEN 18
104 #define AUO_PIXCIR_RAW_DATA_Y_LEN 11
105
106 #define AUO_PIXCIR_STRENGTH_ENABLE (1 << 0)
107
108 /* Touchscreen absolute values */
109 #define AUO_PIXCIR_REPORT_POINTS 2
110 #define AUO_PIXCIR_MAX_AREA 0xff
111 #define AUO_PIXCIR_PENUP_TIMEOUT_MS 10
112
113 struct auo_pixcir_ts {
114 struct i2c_client *client;
115 struct input_dev *input;
116 struct gpio_desc *gpio_int;
117 struct gpio_desc *gpio_rst;
118 char phys[32];
119
120 unsigned int x_max;
121 unsigned int y_max;
122
123 /* special handling for touch_indicate interrupt mode */
124 bool touch_ind_mode;
125
126 wait_queue_head_t wait;
127 bool stopped;
128 };
129
130 struct auo_point_t {
131 int coord_x;
132 int coord_y;
133 int area_major;
134 int area_minor;
135 int orientation;
136 };
137
auo_pixcir_collect_data(struct auo_pixcir_ts * ts,struct auo_point_t * point)138 static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
139 struct auo_point_t *point)
140 {
141 struct i2c_client *client = ts->client;
142 uint8_t raw_coord[8];
143 uint8_t raw_area[4];
144 int i, ret;
145
146 /* touch coordinates */
147 ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_X1_LSB,
148 8, raw_coord);
149 if (ret < 0) {
150 dev_err(&client->dev, "failed to read coordinate, %d\n", ret);
151 return ret;
152 }
153
154 /* touch area */
155 ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_TOUCHAREA_X1,
156 4, raw_area);
157 if (ret < 0) {
158 dev_err(&client->dev, "could not read touch area, %d\n", ret);
159 return ret;
160 }
161
162 for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) {
163 point[i].coord_x =
164 raw_coord[4 * i + 1] << 8 | raw_coord[4 * i];
165 point[i].coord_y =
166 raw_coord[4 * i + 3] << 8 | raw_coord[4 * i + 2];
167
168 if (point[i].coord_x > ts->x_max ||
169 point[i].coord_y > ts->y_max) {
170 dev_warn(&client->dev, "coordinates (%d,%d) invalid\n",
171 point[i].coord_x, point[i].coord_y);
172 point[i].coord_x = point[i].coord_y = 0;
173 }
174
175 /* determine touch major, minor and orientation */
176 point[i].area_major = max(raw_area[2 * i], raw_area[2 * i + 1]);
177 point[i].area_minor = min(raw_area[2 * i], raw_area[2 * i + 1]);
178 point[i].orientation = raw_area[2 * i] > raw_area[2 * i + 1];
179 }
180
181 return 0;
182 }
183
auo_pixcir_interrupt(int irq,void * dev_id)184 static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
185 {
186 struct auo_pixcir_ts *ts = dev_id;
187 struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
188 int i;
189 int ret;
190 int fingers = 0;
191 int abs = -1;
192
193 while (!ts->stopped) {
194
195 /* check for up event in touch touch_ind_mode */
196 if (ts->touch_ind_mode) {
197 if (gpiod_get_value_cansleep(ts->gpio_int) == 0) {
198 input_mt_sync(ts->input);
199 input_report_key(ts->input, BTN_TOUCH, 0);
200 input_sync(ts->input);
201 break;
202 }
203 }
204
205 ret = auo_pixcir_collect_data(ts, point);
206 if (ret < 0) {
207 /* we want to loop only in touch_ind_mode */
208 if (!ts->touch_ind_mode)
209 break;
210
211 wait_event_timeout(ts->wait, ts->stopped,
212 msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS));
213 continue;
214 }
215
216 for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) {
217 if (point[i].coord_x > 0 || point[i].coord_y > 0) {
218 input_report_abs(ts->input, ABS_MT_POSITION_X,
219 point[i].coord_x);
220 input_report_abs(ts->input, ABS_MT_POSITION_Y,
221 point[i].coord_y);
222 input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR,
223 point[i].area_major);
224 input_report_abs(ts->input, ABS_MT_TOUCH_MINOR,
225 point[i].area_minor);
226 input_report_abs(ts->input, ABS_MT_ORIENTATION,
227 point[i].orientation);
228 input_mt_sync(ts->input);
229
230 /* use first finger as source for singletouch */
231 if (fingers == 0)
232 abs = i;
233
234 /* number of touch points could also be queried
235 * via i2c but would require an additional call
236 */
237 fingers++;
238 }
239 }
240
241 input_report_key(ts->input, BTN_TOUCH, fingers > 0);
242
243 if (abs > -1) {
244 input_report_abs(ts->input, ABS_X, point[abs].coord_x);
245 input_report_abs(ts->input, ABS_Y, point[abs].coord_y);
246 }
247
248 input_sync(ts->input);
249
250 /* we want to loop only in touch_ind_mode */
251 if (!ts->touch_ind_mode)
252 break;
253
254 wait_event_timeout(ts->wait, ts->stopped,
255 msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS));
256 }
257
258 return IRQ_HANDLED;
259 }
260
261 /*
262 * Set the power mode of the device.
263 * Valid modes are
264 * - AUO_PIXCIR_POWER_ACTIVE
265 * - AUO_PIXCIR_POWER_SLEEP - automatically left on first touch
266 * - AUO_PIXCIR_POWER_DEEP_SLEEP
267 */
auo_pixcir_power_mode(struct auo_pixcir_ts * ts,int mode)268 static int auo_pixcir_power_mode(struct auo_pixcir_ts *ts, int mode)
269 {
270 struct i2c_client *client = ts->client;
271 int ret;
272
273 ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_POWER_MODE);
274 if (ret < 0) {
275 dev_err(&client->dev, "unable to read reg %Xh, %d\n",
276 AUO_PIXCIR_REG_POWER_MODE, ret);
277 return ret;
278 }
279
280 ret &= ~AUO_PIXCIR_POWER_MASK;
281 ret |= mode;
282
283 ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_POWER_MODE, ret);
284 if (ret) {
285 dev_err(&client->dev, "unable to write reg %Xh, %d\n",
286 AUO_PIXCIR_REG_POWER_MODE, ret);
287 return ret;
288 }
289
290 return 0;
291 }
292
auo_pixcir_int_config(struct auo_pixcir_ts * ts,int int_setting)293 static int auo_pixcir_int_config(struct auo_pixcir_ts *ts, int int_setting)
294 {
295 struct i2c_client *client = ts->client;
296 int ret;
297
298 ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
299 if (ret < 0) {
300 dev_err(&client->dev, "unable to read reg %Xh, %d\n",
301 AUO_PIXCIR_REG_INT_SETTING, ret);
302 return ret;
303 }
304
305 ret &= ~AUO_PIXCIR_INT_MODE_MASK;
306 ret |= int_setting;
307 ret |= AUO_PIXCIR_INT_POL_HIGH; /* always use high for interrupts */
308
309 ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING,
310 ret);
311 if (ret < 0) {
312 dev_err(&client->dev, "unable to write reg %Xh, %d\n",
313 AUO_PIXCIR_REG_INT_SETTING, ret);
314 return ret;
315 }
316
317 ts->touch_ind_mode = int_setting == AUO_PIXCIR_INT_TOUCH_IND;
318
319 return 0;
320 }
321
322 /* control the generation of interrupts on the device side */
auo_pixcir_int_toggle(struct auo_pixcir_ts * ts,bool enable)323 static int auo_pixcir_int_toggle(struct auo_pixcir_ts *ts, bool enable)
324 {
325 struct i2c_client *client = ts->client;
326 int ret;
327
328 ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
329 if (ret < 0) {
330 dev_err(&client->dev, "unable to read reg %Xh, %d\n",
331 AUO_PIXCIR_REG_INT_SETTING, ret);
332 return ret;
333 }
334
335 if (enable)
336 ret |= AUO_PIXCIR_INT_ENABLE;
337 else
338 ret &= ~AUO_PIXCIR_INT_ENABLE;
339
340 ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING,
341 ret);
342 if (ret < 0) {
343 dev_err(&client->dev, "unable to write reg %Xh, %d\n",
344 AUO_PIXCIR_REG_INT_SETTING, ret);
345 return ret;
346 }
347
348 return 0;
349 }
350
auo_pixcir_start(struct auo_pixcir_ts * ts)351 static int auo_pixcir_start(struct auo_pixcir_ts *ts)
352 {
353 struct i2c_client *client = ts->client;
354 int ret;
355
356 ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_ACTIVE);
357 if (ret < 0) {
358 dev_err(&client->dev, "could not set power mode, %d\n",
359 ret);
360 return ret;
361 }
362
363 ts->stopped = false;
364 mb();
365 enable_irq(client->irq);
366
367 ret = auo_pixcir_int_toggle(ts, 1);
368 if (ret < 0) {
369 dev_err(&client->dev, "could not enable interrupt, %d\n",
370 ret);
371 disable_irq(client->irq);
372 return ret;
373 }
374
375 return 0;
376 }
377
auo_pixcir_stop(struct auo_pixcir_ts * ts)378 static int auo_pixcir_stop(struct auo_pixcir_ts *ts)
379 {
380 struct i2c_client *client = ts->client;
381 int ret;
382
383 ret = auo_pixcir_int_toggle(ts, 0);
384 if (ret < 0) {
385 dev_err(&client->dev, "could not disable interrupt, %d\n",
386 ret);
387 return ret;
388 }
389
390 /* disable receiving of interrupts */
391 disable_irq(client->irq);
392 ts->stopped = true;
393 mb();
394 wake_up(&ts->wait);
395
396 return auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_DEEP_SLEEP);
397 }
398
auo_pixcir_input_open(struct input_dev * dev)399 static int auo_pixcir_input_open(struct input_dev *dev)
400 {
401 struct auo_pixcir_ts *ts = input_get_drvdata(dev);
402
403 return auo_pixcir_start(ts);
404 }
405
auo_pixcir_input_close(struct input_dev * dev)406 static void auo_pixcir_input_close(struct input_dev *dev)
407 {
408 struct auo_pixcir_ts *ts = input_get_drvdata(dev);
409
410 auo_pixcir_stop(ts);
411 }
412
auo_pixcir_suspend(struct device * dev)413 static int auo_pixcir_suspend(struct device *dev)
414 {
415 struct i2c_client *client = to_i2c_client(dev);
416 struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
417 struct input_dev *input = ts->input;
418 int ret = 0;
419
420 mutex_lock(&input->mutex);
421
422 /* when configured as wakeup source, device should always wake system
423 * therefore start device if necessary
424 */
425 if (device_may_wakeup(&client->dev)) {
426 /* need to start device if not open, to be wakeup source */
427 if (!input_device_enabled(input)) {
428 ret = auo_pixcir_start(ts);
429 if (ret)
430 goto unlock;
431 }
432
433 enable_irq_wake(client->irq);
434 ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_SLEEP);
435 } else if (input_device_enabled(input)) {
436 ret = auo_pixcir_stop(ts);
437 }
438
439 unlock:
440 mutex_unlock(&input->mutex);
441
442 return ret;
443 }
444
auo_pixcir_resume(struct device * dev)445 static int auo_pixcir_resume(struct device *dev)
446 {
447 struct i2c_client *client = to_i2c_client(dev);
448 struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
449 struct input_dev *input = ts->input;
450 int ret = 0;
451
452 mutex_lock(&input->mutex);
453
454 if (device_may_wakeup(&client->dev)) {
455 disable_irq_wake(client->irq);
456
457 /* need to stop device if it was not open on suspend */
458 if (!input_device_enabled(input)) {
459 ret = auo_pixcir_stop(ts);
460 if (ret)
461 goto unlock;
462 }
463
464 /* device wakes automatically from SLEEP */
465 } else if (input_device_enabled(input)) {
466 ret = auo_pixcir_start(ts);
467 }
468
469 unlock:
470 mutex_unlock(&input->mutex);
471
472 return ret;
473 }
474
475 static DEFINE_SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
476 auo_pixcir_suspend, auo_pixcir_resume);
477
auo_pixcir_reset(void * data)478 static void auo_pixcir_reset(void *data)
479 {
480 struct auo_pixcir_ts *ts = data;
481
482 gpiod_set_value_cansleep(ts->gpio_rst, 1);
483 }
484
auo_pixcir_probe(struct i2c_client * client)485 static int auo_pixcir_probe(struct i2c_client *client)
486 {
487 struct auo_pixcir_ts *ts;
488 struct input_dev *input_dev;
489 int version;
490 int error;
491
492 ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
493 if (!ts)
494 return -ENOMEM;
495
496 input_dev = devm_input_allocate_device(&client->dev);
497 if (!input_dev) {
498 dev_err(&client->dev, "could not allocate input device\n");
499 return -ENOMEM;
500 }
501
502 ts->client = client;
503 ts->input = input_dev;
504 ts->touch_ind_mode = 0;
505 ts->stopped = true;
506 init_waitqueue_head(&ts->wait);
507
508 snprintf(ts->phys, sizeof(ts->phys),
509 "%s/input0", dev_name(&client->dev));
510
511 if (device_property_read_u32(&client->dev, "x-size", &ts->x_max)) {
512 dev_err(&client->dev, "failed to get x-size property\n");
513 return -EINVAL;
514 }
515
516 if (device_property_read_u32(&client->dev, "y-size", &ts->y_max)) {
517 dev_err(&client->dev, "failed to get y-size property\n");
518 return -EINVAL;
519 }
520
521 input_dev->name = "AUO-Pixcir touchscreen";
522 input_dev->phys = ts->phys;
523 input_dev->id.bustype = BUS_I2C;
524
525 input_dev->open = auo_pixcir_input_open;
526 input_dev->close = auo_pixcir_input_close;
527
528 __set_bit(EV_ABS, input_dev->evbit);
529 __set_bit(EV_KEY, input_dev->evbit);
530
531 __set_bit(BTN_TOUCH, input_dev->keybit);
532
533 /* For single touch */
534 input_set_abs_params(input_dev, ABS_X, 0, ts->x_max, 0, 0);
535 input_set_abs_params(input_dev, ABS_Y, 0, ts->y_max, 0, 0);
536
537 /* For multi touch */
538 input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, ts->x_max, 0, 0);
539 input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, ts->y_max, 0, 0);
540 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
541 0, AUO_PIXCIR_MAX_AREA, 0, 0);
542 input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR,
543 0, AUO_PIXCIR_MAX_AREA, 0, 0);
544 input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
545
546 input_set_drvdata(ts->input, ts);
547
548 ts->gpio_int = devm_gpiod_get_index(&client->dev, NULL, 0, GPIOD_IN);
549 error = PTR_ERR_OR_ZERO(ts->gpio_int);
550 if (error) {
551 dev_err(&client->dev,
552 "request of int gpio failed: %d\n", error);
553 return error;
554 }
555
556 gpiod_set_consumer_name(ts->gpio_int, "auo_pixcir_ts_int");
557
558 /* Take the chip out of reset */
559 ts->gpio_rst = devm_gpiod_get_index(&client->dev, NULL, 1,
560 GPIOD_OUT_LOW);
561 error = PTR_ERR_OR_ZERO(ts->gpio_rst);
562 if (error) {
563 dev_err(&client->dev,
564 "request of reset gpio failed: %d\n", error);
565 return error;
566 }
567
568 gpiod_set_consumer_name(ts->gpio_rst, "auo_pixcir_ts_rst");
569
570 error = devm_add_action_or_reset(&client->dev, auo_pixcir_reset, ts);
571 if (error) {
572 dev_err(&client->dev, "failed to register reset action, %d\n",
573 error);
574 return error;
575 }
576
577 msleep(200);
578
579 version = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
580 if (version < 0) {
581 error = version;
582 return error;
583 }
584
585 dev_info(&client->dev, "firmware version 0x%X\n", version);
586
587 /* default to asserting the interrupt when the screen is touched */
588 error = auo_pixcir_int_config(ts, AUO_PIXCIR_INT_TOUCH_IND);
589 if (error)
590 return error;
591
592 error = devm_request_threaded_irq(&client->dev, client->irq,
593 NULL, auo_pixcir_interrupt,
594 IRQF_ONESHOT,
595 input_dev->name, ts);
596 if (error) {
597 dev_err(&client->dev, "irq %d requested failed, %d\n",
598 client->irq, error);
599 return error;
600 }
601
602 /* stop device and put it into deep sleep until it is opened */
603 error = auo_pixcir_stop(ts);
604 if (error)
605 return error;
606
607 error = input_register_device(input_dev);
608 if (error) {
609 dev_err(&client->dev, "could not register input device, %d\n",
610 error);
611 return error;
612 }
613
614 i2c_set_clientdata(client, ts);
615
616 return 0;
617 }
618
619 static const struct i2c_device_id auo_pixcir_idtable[] = {
620 { "auo_pixcir_ts", 0 },
621 { }
622 };
623 MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
624
625 #ifdef CONFIG_OF
626 static const struct of_device_id auo_pixcir_ts_dt_idtable[] = {
627 { .compatible = "auo,auo_pixcir_ts" },
628 {},
629 };
630 MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
631 #endif
632
633 static struct i2c_driver auo_pixcir_driver = {
634 .driver = {
635 .name = "auo_pixcir_ts",
636 .pm = pm_sleep_ptr(&auo_pixcir_pm_ops),
637 .of_match_table = of_match_ptr(auo_pixcir_ts_dt_idtable),
638 },
639 .probe = auo_pixcir_probe,
640 .id_table = auo_pixcir_idtable,
641 };
642
643 module_i2c_driver(auo_pixcir_driver);
644
645 MODULE_DESCRIPTION("AUO-PIXCIR touchscreen driver");
646 MODULE_LICENSE("GPL v2");
647 MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
648