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1// SPDX-License-Identifier: GPL-2.0
2// Melfas MMS114/MMS136/MMS152 touchscreen device driver
3//
4// Copyright (c) 2012 Samsung Electronics Co., Ltd.
5// Author: Joonyoung Shim <[email protected]>
6
7#include <linux/bitfield.h>
8#include <linux/bits.h>
9#include <linux/module.h>
10#include <linux/delay.h>
11#include <linux/of.h>
12#include <linux/i2c.h>
13#include <linux/input/mt.h>
14#include <linux/input/touchscreen.h>
15#include <linux/interrupt.h>
16#include <linux/regulator/consumer.h>
17#include <linux/slab.h>
18
19/* Write only registers */
20#define MMS114_MODE_CONTROL 0x01
21#define MMS114_OPERATION_MODE_MASK 0xE
22#define MMS114_ACTIVE BIT(1)
23
24#define MMS114_XY_RESOLUTION_H 0x02
25#define MMS114_X_RESOLUTION 0x03
26#define MMS114_Y_RESOLUTION 0x04
27#define MMS114_CONTACT_THRESHOLD 0x05
28#define MMS114_MOVING_THRESHOLD 0x06
29
30/* Read only registers */
31#define MMS114_PACKET_SIZE 0x0F
32#define MMS114_INFORMATION 0x10
33#define MMS114_TSP_REV 0xF0
34
35#define MMS152_FW_REV 0xE1
36#define MMS152_COMPAT_GROUP 0xF2
37
38/* Minimum delay time is 50us between stop and start signal of i2c */
39#define MMS114_I2C_DELAY 50
40
41/* 200ms needs after power on */
42#define MMS114_POWERON_DELAY 200
43
44/* Touchscreen absolute values */
45#define MMS114_MAX_AREA 0xff
46
47#define MMS114_MAX_TOUCHKEYS 15
48#define MMS114_MAX_TOUCH 10
49#define MMS114_EVENT_SIZE 8
50#define MMS136_EVENT_SIZE 6
51
52/* Touch type */
53#define MMS114_TYPE_NONE 0
54#define MMS114_TYPE_TOUCHSCREEN 1
55#define MMS114_TYPE_TOUCHKEY 2
56
57struct mms114_data {
58 const struct mms_chip *chip;
59 struct i2c_client *client;
60 struct input_dev *input_dev;
61 struct regulator *core_reg;
62 struct regulator *io_reg;
63 struct touchscreen_properties props;
64 unsigned int contact_threshold;
65 unsigned int moving_threshold;
66
67 u32 keycodes[MMS114_MAX_TOUCHKEYS];
68 int num_keycodes;
69
70 /* Use cache data for mode control register(write only) */
71 u8 cache_mode_control;
72};
73
74struct mms_chip {
75 const char *name;
76 int event_size;
77 bool has_config_regs;
78 int (*get_version)(struct mms114_data *data);
79};
80
81#define MMS114_FLAGS_ID_MASK GENMASK(3, 0)
82#define MMS114_FLAGS_TYPE_MASK GENMASK(6, 5)
83#define MMS114_FLAGS_PRESSED_MASK BIT(7)
84
85#define MMS114_XY_HI_X_MASK GENMASK(3, 0)
86#define MMS114_XY_HI_Y_MASK GENMASK(7, 4)
87
88struct mms114_touch {
89 u8 flags;
90 u8 xy_hi;
91 u8 x_lo;
92 u8 y_lo;
93 u8 width;
94 u8 strength;
95 u8 reserved[2];
96} __packed;
97
98static int __mms114_read_reg(struct mms114_data *data, u8 reg,
99 unsigned int len, void *val)
100{
101 struct i2c_client *client = data->client;
102 struct i2c_msg xfer[2];
103 u8 buf = reg;
104 int error;
105
106 if (WARN_ON(reg <= MMS114_MODE_CONTROL && reg + len > MMS114_MODE_CONTROL))
107 return -EINVAL;
108
109 /* Write register */
110 xfer[0].addr = client->addr;
111 xfer[0].flags = client->flags & I2C_M_TEN;
112 xfer[0].len = 1;
113 xfer[0].buf = &buf;
114
115 /* Read data */
116 xfer[1].addr = client->addr;
117 xfer[1].flags = (client->flags & I2C_M_TEN) | I2C_M_RD;
118 xfer[1].len = len;
119 xfer[1].buf = val;
120
121 error = i2c_transfer(client->adapter, xfer, 2);
122 if (error != 2) {
123 dev_err(&client->dev,
124 "%s: i2c transfer failed (%d)\n", __func__, error);
125 return error < 0 ? error : -EIO;
126 }
127 usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50);
128
129 return 0;
130}
131
132static int mms114_read_reg(struct mms114_data *data, u8 reg)
133{
134 u8 val;
135 int error;
136
137 if (reg == MMS114_MODE_CONTROL)
138 return data->cache_mode_control;
139
140 error = __mms114_read_reg(data, reg, 1, &val);
141 return error < 0 ? error : val;
142}
143
144static int mms114_write_reg(struct mms114_data *data, u8 reg, u8 val)
145{
146 struct i2c_client *client = data->client;
147 u8 buf[2];
148 int error;
149
150 buf[0] = reg;
151 buf[1] = val;
152
153 error = i2c_master_send(client, buf, 2);
154 if (error != 2) {
155 dev_err(&client->dev,
156 "%s: i2c send failed (%d)\n", __func__, error);
157 return error < 0 ? error : -EIO;
158 }
159 usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50);
160
161 if (reg == MMS114_MODE_CONTROL)
162 data->cache_mode_control = val;
163
164 return 0;
165}
166
167static int mms114_get_version(struct mms114_data *data)
168{
169 struct device *dev = &data->client->dev;
170 u8 buf[6];
171 int error;
172
173 error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
174 if (error)
175 return error;
176
177 dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
178 buf[0], buf[1], buf[3]);
179 return 0;
180}
181
182static int mms152_get_version(struct mms114_data *data)
183{
184 struct device *dev = &data->client->dev;
185 u8 buf[3];
186 int group;
187 int error;
188
189 error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
190 if (error)
191 return error;
192
193 group = i2c_smbus_read_byte_data(data->client, MMS152_COMPAT_GROUP);
194 if (group < 0)
195 return group;
196
197 dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n",
198 buf[0], buf[1], buf[2], group);
199 return 0;
200}
201
202static int mms345l_get_version(struct mms114_data *data)
203{
204 struct device *dev = &data->client->dev;
205 u8 buf[3];
206 int error;
207
208 error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
209 if (error)
210 return error;
211
212 dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x\n",
213 buf[0], buf[1], buf[2]);
214 return 0;
215}
216
217static const struct mms_chip mms114_descriptor = {
218 .name = "MMS114",
219 .event_size = MMS114_EVENT_SIZE,
220 .has_config_regs = true,
221 .get_version = mms114_get_version,
222};
223
224static const struct mms_chip mms134s_descriptor = {
225 .name = "MMS134S",
226 .event_size = MMS136_EVENT_SIZE,
227 .has_config_regs = true,
228 .get_version = mms114_get_version,
229};
230
231static const struct mms_chip mms136_descriptor = {
232 .name = "MMS136",
233 .event_size = MMS136_EVENT_SIZE,
234 .has_config_regs = true,
235 .get_version = mms114_get_version,
236};
237
238static const struct mms_chip mms152_descriptor = {
239 .name = "MMS152",
240 .event_size = MMS114_EVENT_SIZE,
241 .has_config_regs = false,
242 .get_version = mms152_get_version,
243};
244
245static const struct mms_chip mms345l_descriptor = {
246 .name = "MMS345L",
247 .event_size = MMS114_EVENT_SIZE,
248 .has_config_regs = false,
249 .get_version = mms345l_get_version,
250};
251
252static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *touch)
253{
254 struct i2c_client *client = data->client;
255 struct input_dev *input_dev = data->input_dev;
256 unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags);
257 unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, touch->flags);
258 bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags);
259 unsigned int x;
260 unsigned int y;
261
262 if (id == 0 || id > MMS114_MAX_TOUCH) {
263 dev_err(&client->dev, "Wrong touch id (%d)\n", id);
264 return;
265 }
266
267 id--;
268 x = touch->x_lo | FIELD_GET(MMS114_XY_HI_X_MASK, touch->xy_hi) << 8;
269 y = touch->y_lo | FIELD_GET(MMS114_XY_HI_Y_MASK, touch->xy_hi) << 8;
270
271 dev_dbg(&client->dev,
272 "id: %d, type: %d, pressed: %d, x: %d, y: %d, width: %d, strength: %d\n",
273 id, type, pressed,
274 x, y, touch->width, touch->strength);
275
276 input_mt_slot(input_dev, id);
277 input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, pressed);
278
279 if (pressed) {
280 touchscreen_report_pos(input_dev, &data->props, x, y, true);
281 input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, touch->width);
282 input_report_abs(input_dev, ABS_MT_PRESSURE, touch->strength);
283 }
284}
285
286static void mms114_process_touchkey(struct mms114_data *data,
287 struct mms114_touch *touch)
288{
289 struct i2c_client *client = data->client;
290 struct input_dev *input_dev = data->input_dev;
291 unsigned int keycode_id;
292 unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags);
293 bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags);
294
295 if (id == 0)
296 return;
297
298 if (id > data->num_keycodes) {
299 dev_err(&client->dev, "Wrong touch id for touchkey (%d)\n",
300 id);
301 return;
302 }
303
304 keycode_id = id - 1;
305 dev_dbg(&client->dev, "keycode id: %d, pressed: %d\n", keycode_id,
306 pressed);
307
308 input_report_key(input_dev, data->keycodes[keycode_id], pressed);
309}
310
311static irqreturn_t mms114_interrupt(int irq, void *dev_id)
312{
313 struct mms114_data *data = dev_id;
314 struct i2c_client *client = data->client;
315 struct mms114_touch touch[MMS114_MAX_TOUCH];
316 struct mms114_touch *t;
317 int event_size = data->chip->event_size;
318 int packet_size;
319 int touch_size;
320 int index;
321 int error;
322
323 packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE);
324 if (packet_size <= 0)
325 goto out;
326
327 if (packet_size > sizeof(touch)) {
328 dev_err(&client->dev, "Invalid packet size %d (max %zu)\n",
329 packet_size, sizeof(touch));
330 goto out;
331 }
332
333 touch_size = packet_size / event_size;
334
335 error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size, touch);
336 if (error)
337 goto out;
338
339 for (index = 0; index < touch_size; index++) {
340 t = (struct mms114_touch *)((u8 *)touch + index * event_size);
341 unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, t->flags);
342
343 switch (type) {
344 case MMS114_TYPE_TOUCHSCREEN:
345 mms114_process_mt(data, t);
346 break;
347
348 case MMS114_TYPE_TOUCHKEY:
349 mms114_process_touchkey(data, t);
350 break;
351
352 default:
353 dev_err(&client->dev, "Wrong touch type (%d)\n",
354 type);
355 break;
356 }
357 }
358
359 input_mt_report_pointer_emulation(data->input_dev, true);
360 input_sync(data->input_dev);
361
362out:
363 return IRQ_HANDLED;
364}
365
366static int mms114_set_active(struct mms114_data *data, bool active)
367{
368 int val;
369
370 val = mms114_read_reg(data, MMS114_MODE_CONTROL);
371 if (val < 0)
372 return val;
373
374 val &= ~MMS114_OPERATION_MODE_MASK;
375
376 /* If active is false, sleep mode */
377 if (active)
378 val |= MMS114_ACTIVE;
379
380 return mms114_write_reg(data, MMS114_MODE_CONTROL, val);
381}
382
383static int mms114_setup_regs(struct mms114_data *data)
384{
385 const struct touchscreen_properties *props = &data->props;
386 int val;
387 int error;
388
389 error = data->chip->get_version(data);
390 if (error)
391 return error;
392
393 if (!data->chip->has_config_regs)
394 return 0;
395
396 error = mms114_set_active(data, true);
397 if (error < 0)
398 return error;
399
400 val = (props->max_x >> 8) & 0xf;
401 val |= ((props->max_y >> 8) & 0xf) << 4;
402 error = mms114_write_reg(data, MMS114_XY_RESOLUTION_H, val);
403 if (error < 0)
404 return error;
405
406 val = props->max_x & 0xff;
407 error = mms114_write_reg(data, MMS114_X_RESOLUTION, val);
408 if (error < 0)
409 return error;
410
411 val = props->max_y & 0xff;
412 error = mms114_write_reg(data, MMS114_Y_RESOLUTION, val);
413 if (error < 0)
414 return error;
415
416 if (data->contact_threshold) {
417 error = mms114_write_reg(data, MMS114_CONTACT_THRESHOLD,
418 data->contact_threshold);
419 if (error < 0)
420 return error;
421 }
422
423 if (data->moving_threshold) {
424 error = mms114_write_reg(data, MMS114_MOVING_THRESHOLD,
425 data->moving_threshold);
426 if (error < 0)
427 return error;
428 }
429
430 return 0;
431}
432
433static int mms114_start(struct mms114_data *data)
434{
435 struct i2c_client *client = data->client;
436 int error;
437
438 error = regulator_enable(data->core_reg);
439 if (error) {
440 dev_err(&client->dev, "Failed to enable avdd: %d\n", error);
441 return error;
442 }
443
444 error = regulator_enable(data->io_reg);
445 if (error) {
446 dev_err(&client->dev, "Failed to enable vdd: %d\n", error);
447 regulator_disable(data->core_reg);
448 return error;
449 }
450
451 msleep(MMS114_POWERON_DELAY);
452
453 error = mms114_setup_regs(data);
454 if (error < 0) {
455 regulator_disable(data->io_reg);
456 regulator_disable(data->core_reg);
457 return error;
458 }
459
460 enable_irq(client->irq);
461
462 return 0;
463}
464
465static void mms114_stop(struct mms114_data *data)
466{
467 struct i2c_client *client = data->client;
468 int error;
469
470 disable_irq(client->irq);
471
472 error = regulator_disable(data->io_reg);
473 if (error)
474 dev_warn(&client->dev, "Failed to disable vdd: %d\n", error);
475
476 error = regulator_disable(data->core_reg);
477 if (error)
478 dev_warn(&client->dev, "Failed to disable avdd: %d\n", error);
479}
480
481static int mms114_input_open(struct input_dev *dev)
482{
483 struct mms114_data *data = input_get_drvdata(dev);
484
485 return mms114_start(data);
486}
487
488static void mms114_input_close(struct input_dev *dev)
489{
490 struct mms114_data *data = input_get_drvdata(dev);
491
492 mms114_stop(data);
493}
494
495static int mms114_parse_legacy_bindings(struct mms114_data *data)
496{
497 struct device *dev = &data->client->dev;
498 struct touchscreen_properties *props = &data->props;
499
500 if (device_property_read_u32(dev, "x-size", &props->max_x)) {
501 dev_dbg(dev, "failed to get legacy x-size property\n");
502 return -EINVAL;
503 }
504
505 if (device_property_read_u32(dev, "y-size", &props->max_y)) {
506 dev_dbg(dev, "failed to get legacy y-size property\n");
507 return -EINVAL;
508 }
509
510 device_property_read_u32(dev, "contact-threshold",
511 &data->contact_threshold);
512 device_property_read_u32(dev, "moving-threshold",
513 &data->moving_threshold);
514
515 if (device_property_read_bool(dev, "x-invert"))
516 props->invert_x = true;
517 if (device_property_read_bool(dev, "y-invert"))
518 props->invert_y = true;
519
520 props->swap_x_y = false;
521
522 return 0;
523}
524
525static int mms114_probe(struct i2c_client *client)
526{
527 struct mms114_data *data;
528 struct input_dev *input_dev;
529 int error;
530 int i;
531
532 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
533 dev_err(&client->dev, "Not supported I2C adapter\n");
534 return -ENODEV;
535 }
536
537 data = devm_kzalloc(&client->dev, sizeof(struct mms114_data),
538 GFP_KERNEL);
539 input_dev = devm_input_allocate_device(&client->dev);
540 if (!data || !input_dev) {
541 dev_err(&client->dev, "Failed to allocate memory\n");
542 return -ENOMEM;
543 }
544
545 data->client = client;
546 data->input_dev = input_dev;
547
548 data->chip = i2c_get_match_data(client);
549 if (!data->chip)
550 return -EINVAL;
551
552 data->num_keycodes = device_property_count_u32(&client->dev,
553 "linux,keycodes");
554 if (data->num_keycodes == -EINVAL) {
555 data->num_keycodes = 0;
556 } else if (data->num_keycodes < 0) {
557 dev_err(&client->dev,
558 "Unable to parse linux,keycodes property: %d\n",
559 data->num_keycodes);
560 return data->num_keycodes;
561 } else if (data->num_keycodes > MMS114_MAX_TOUCHKEYS) {
562 dev_warn(&client->dev,
563 "Found %d linux,keycodes but max is %d, ignoring the rest\n",
564 data->num_keycodes, MMS114_MAX_TOUCHKEYS);
565 data->num_keycodes = MMS114_MAX_TOUCHKEYS;
566 }
567
568 if (data->num_keycodes > 0) {
569 error = device_property_read_u32_array(&client->dev,
570 "linux,keycodes",
571 data->keycodes,
572 data->num_keycodes);
573 if (error) {
574 dev_err(&client->dev,
575 "Unable to read linux,keycodes values: %d\n",
576 error);
577 return error;
578 }
579
580 input_dev->keycode = data->keycodes;
581 input_dev->keycodemax = data->num_keycodes;
582 input_dev->keycodesize = sizeof(data->keycodes[0]);
583 for (i = 0; i < data->num_keycodes; i++)
584 input_set_capability(input_dev,
585 EV_KEY, data->keycodes[i]);
586 }
587
588 input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
589 input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
590 input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
591 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
592 0, MMS114_MAX_AREA, 0, 0);
593
594 touchscreen_parse_properties(input_dev, true, &data->props);
595 if (!data->props.max_x || !data->props.max_y) {
596 dev_dbg(&client->dev,
597 "missing X/Y size properties, trying legacy bindings\n");
598 error = mms114_parse_legacy_bindings(data);
599 if (error)
600 return error;
601
602 input_set_abs_params(input_dev, ABS_MT_POSITION_X,
603 0, data->props.max_x, 0, 0);
604 input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
605 0, data->props.max_y, 0, 0);
606 }
607
608 if (data->chip->has_config_regs) {
609 /*
610 * The firmware handles movement and pressure fuzz, so
611 * don't duplicate that in software.
612 */
613 data->moving_threshold = input_abs_get_fuzz(input_dev,
614 ABS_MT_POSITION_X);
615 data->contact_threshold = input_abs_get_fuzz(input_dev,
616 ABS_MT_PRESSURE);
617 input_abs_set_fuzz(input_dev, ABS_MT_POSITION_X, 0);
618 input_abs_set_fuzz(input_dev, ABS_MT_POSITION_Y, 0);
619 input_abs_set_fuzz(input_dev, ABS_MT_PRESSURE, 0);
620 }
621
622 input_dev->name = devm_kasprintf(&client->dev, GFP_KERNEL,
623 "MELFAS %s Touchscreen",
624 data->chip->name);
625 if (!input_dev->name)
626 return -ENOMEM;
627
628 input_dev->id.bustype = BUS_I2C;
629 input_dev->dev.parent = &client->dev;
630 input_dev->open = mms114_input_open;
631 input_dev->close = mms114_input_close;
632
633 error = input_mt_init_slots(input_dev, MMS114_MAX_TOUCH,
634 INPUT_MT_DIRECT);
635 if (error)
636 return error;
637
638 input_set_drvdata(input_dev, data);
639 i2c_set_clientdata(client, data);
640
641 data->core_reg = devm_regulator_get(&client->dev, "avdd");
642 if (IS_ERR(data->core_reg)) {
643 error = PTR_ERR(data->core_reg);
644 dev_err(&client->dev,
645 "Unable to get the Core regulator (%d)\n", error);
646 return error;
647 }
648
649 data->io_reg = devm_regulator_get(&client->dev, "vdd");
650 if (IS_ERR(data->io_reg)) {
651 error = PTR_ERR(data->io_reg);
652 dev_err(&client->dev,
653 "Unable to get the IO regulator (%d)\n", error);
654 return error;
655 }
656
657 error = devm_request_threaded_irq(&client->dev, client->irq,
658 NULL, mms114_interrupt,
659 IRQF_ONESHOT | IRQF_NO_AUTOEN,
660 dev_name(&client->dev), data);
661 if (error) {
662 dev_err(&client->dev, "Failed to register interrupt\n");
663 return error;
664 }
665
666 error = input_register_device(data->input_dev);
667 if (error) {
668 dev_err(&client->dev, "Failed to register input device\n");
669 return error;
670 }
671
672 return 0;
673}
674
675static int mms114_suspend(struct device *dev)
676{
677 struct i2c_client *client = to_i2c_client(dev);
678 struct mms114_data *data = i2c_get_clientdata(client);
679 struct input_dev *input_dev = data->input_dev;
680 int id;
681
682 /* Release all touch */
683 for (id = 0; id < MMS114_MAX_TOUCH; id++) {
684 input_mt_slot(input_dev, id);
685 input_mt_report_slot_inactive(input_dev);
686 }
687
688 input_mt_report_pointer_emulation(input_dev, true);
689 input_sync(input_dev);
690
691 guard(mutex)(&input_dev->mutex);
692
693 if (input_device_enabled(input_dev))
694 mms114_stop(data);
695
696 return 0;
697}
698
699static int mms114_resume(struct device *dev)
700{
701 struct i2c_client *client = to_i2c_client(dev);
702 struct mms114_data *data = i2c_get_clientdata(client);
703 struct input_dev *input_dev = data->input_dev;
704 int error;
705
706 guard(mutex)(&input_dev->mutex);
707
708 if (input_device_enabled(input_dev)) {
709 error = mms114_start(data);
710 if (error)
711 return error;
712 }
713
714 return 0;
715}
716
717static DEFINE_SIMPLE_DEV_PM_OPS(mms114_pm_ops, mms114_suspend, mms114_resume);
718
719static const struct i2c_device_id mms114_id[] = {
720 { .name = "mms114", .driver_data = (kernel_ulong_t)&mms114_descriptor },
721 { .name = "mms134s", .driver_data = (kernel_ulong_t)&mms134s_descriptor },
722 { .name = "mms136", .driver_data = (kernel_ulong_t)&mms136_descriptor },
723 { .name = "mms152", .driver_data = (kernel_ulong_t)&mms152_descriptor },
724 { .name = "mms345l", .driver_data = (kernel_ulong_t)&mms345l_descriptor },
725 { }
726};
727MODULE_DEVICE_TABLE(i2c, mms114_id);
728
729#ifdef CONFIG_OF
730static const struct of_device_id mms114_dt_match[] = {
731 { .compatible = "melfas,mms114", .data = &mms114_descriptor },
732 { .compatible = "melfas,mms134s", .data = &mms134s_descriptor },
733 { .compatible = "melfas,mms136", .data = &mms136_descriptor },
734 { .compatible = "melfas,mms152", .data = &mms152_descriptor },
735 { .compatible = "melfas,mms345l", .data = &mms345l_descriptor },
736 { }
737};
738MODULE_DEVICE_TABLE(of, mms114_dt_match);
739#endif
740
741static struct i2c_driver mms114_driver = {
742 .driver = {
743 .name = "mms114",
744 .pm = pm_sleep_ptr(&mms114_pm_ops),
745 .of_match_table = of_match_ptr(mms114_dt_match),
746 },
747 .probe = mms114_probe,
748 .id_table = mms114_id,
749};
750
751module_i2c_driver(mms114_driver);
752
753/* Module information */
754MODULE_AUTHOR("Joonyoung Shim <[email protected]>");
755MODULE_DESCRIPTION("MELFAS mms114 Touchscreen driver");
756MODULE_LICENSE("GPL");