1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | |
3 | #include <linux/delay.h> |
4 | #include <linux/i2c.h> |
5 | #include <linux/input.h> |
6 | #include <linux/input/mt.h> |
7 | #include <linux/input/touchscreen.h> |
8 | #include <linux/interrupt.h> |
9 | #include <linux/irq.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/of.h> |
13 | #include <linux/regulator/consumer.h> |
14 | #include <linux/slab.h> |
15 | |
16 | /* Register Map */ |
17 | |
18 | #define ZINITIX_SWRESET_CMD 0x0000 |
19 | #define ZINITIX_WAKEUP_CMD 0x0001 |
20 | |
21 | #define ZINITIX_IDLE_CMD 0x0004 |
22 | #define ZINITIX_SLEEP_CMD 0x0005 |
23 | |
24 | #define ZINITIX_CLEAR_INT_STATUS_CMD 0x0003 |
25 | #define ZINITIX_CALIBRATE_CMD 0x0006 |
26 | #define ZINITIX_SAVE_STATUS_CMD 0x0007 |
27 | #define ZINITIX_SAVE_CALIBRATION_CMD 0x0008 |
28 | #define ZINITIX_RECALL_FACTORY_CMD 0x000f |
29 | |
30 | #define ZINITIX_THRESHOLD 0x0020 |
31 | |
32 | #define ZINITIX_LARGE_PALM_REJECT_AREA_TH 0x003F |
33 | |
34 | #define ZINITIX_DEBUG_REG 0x0115 /* 0~7 */ |
35 | |
36 | #define ZINITIX_TOUCH_MODE 0x0010 |
37 | #define ZINITIX_CHIP_REVISION 0x0011 |
38 | #define ZINITIX_FIRMWARE_VERSION 0x0012 |
39 | |
40 | #define ZINITIX_USB_DETECT 0x116 |
41 | |
42 | #define ZINITIX_MINOR_FW_VERSION 0x0121 |
43 | |
44 | #define ZINITIX_VENDOR_ID 0x001C |
45 | #define ZINITIX_HW_ID 0x0014 |
46 | |
47 | #define ZINITIX_DATA_VERSION_REG 0x0013 |
48 | #define ZINITIX_SUPPORTED_FINGER_NUM 0x0015 |
49 | #define ZINITIX_EEPROM_INFO 0x0018 |
50 | #define ZINITIX_INITIAL_TOUCH_MODE 0x0019 |
51 | |
52 | #define ZINITIX_TOTAL_NUMBER_OF_X 0x0060 |
53 | #define ZINITIX_TOTAL_NUMBER_OF_Y 0x0061 |
54 | |
55 | #define ZINITIX_DELAY_RAW_FOR_HOST 0x007f |
56 | |
57 | #define ZINITIX_BUTTON_SUPPORTED_NUM 0x00B0 |
58 | #define ZINITIX_BUTTON_SENSITIVITY 0x00B2 |
59 | #define ZINITIX_DUMMY_BUTTON_SENSITIVITY 0X00C8 |
60 | |
61 | #define ZINITIX_X_RESOLUTION 0x00C0 |
62 | #define ZINITIX_Y_RESOLUTION 0x00C1 |
63 | |
64 | #define ZINITIX_POINT_STATUS_REG 0x0080 |
65 | #define ZINITIX_ICON_STATUS_REG 0x00AA |
66 | |
67 | #define ZINITIX_POINT_COORD_REG (ZINITIX_POINT_STATUS_REG + 2) |
68 | |
69 | #define ZINITIX_AFE_FREQUENCY 0x0100 |
70 | #define ZINITIX_DND_N_COUNT 0x0122 |
71 | #define ZINITIX_DND_U_COUNT 0x0135 |
72 | |
73 | #define ZINITIX_RAWDATA_REG 0x0200 |
74 | |
75 | #define ZINITIX_EEPROM_INFO_REG 0x0018 |
76 | |
77 | #define ZINITIX_INT_ENABLE_FLAG 0x00f0 |
78 | #define ZINITIX_PERIODICAL_INTERRUPT_INTERVAL 0x00f1 |
79 | |
80 | #define ZINITIX_BTN_WIDTH 0x016d |
81 | |
82 | #define ZINITIX_CHECKSUM_RESULT 0x012c |
83 | |
84 | #define ZINITIX_INIT_FLASH 0x01d0 |
85 | #define ZINITIX_WRITE_FLASH 0x01d1 |
86 | #define ZINITIX_READ_FLASH 0x01d2 |
87 | |
88 | #define ZINITIX_INTERNAL_FLAG_02 0x011e |
89 | #define ZINITIX_INTERNAL_FLAG_03 0x011f |
90 | |
91 | #define ZINITIX_I2C_CHECKSUM_WCNT 0x016a |
92 | #define ZINITIX_I2C_CHECKSUM_RESULT 0x016c |
93 | |
94 | /* Interrupt & status register flags */ |
95 | |
96 | #define BIT_PT_CNT_CHANGE BIT(0) |
97 | #define BIT_DOWN BIT(1) |
98 | #define BIT_MOVE BIT(2) |
99 | #define BIT_UP BIT(3) |
100 | #define BIT_PALM BIT(4) |
101 | #define BIT_PALM_REJECT BIT(5) |
102 | #define BIT_RESERVED_0 BIT(6) |
103 | #define BIT_RESERVED_1 BIT(7) |
104 | #define BIT_WEIGHT_CHANGE BIT(8) |
105 | #define BIT_PT_NO_CHANGE BIT(9) |
106 | #define BIT_REJECT BIT(10) |
107 | #define BIT_PT_EXIST BIT(11) |
108 | #define BIT_RESERVED_2 BIT(12) |
109 | #define BIT_ERROR BIT(13) |
110 | #define BIT_DEBUG BIT(14) |
111 | #define BIT_ICON_EVENT BIT(15) |
112 | |
113 | #define SUB_BIT_EXIST BIT(0) |
114 | #define SUB_BIT_DOWN BIT(1) |
115 | #define SUB_BIT_MOVE BIT(2) |
116 | #define SUB_BIT_UP BIT(3) |
117 | #define SUB_BIT_UPDATE BIT(4) |
118 | #define SUB_BIT_WAIT BIT(5) |
119 | |
120 | #define DEFAULT_TOUCH_POINT_MODE 2 |
121 | #define MAX_SUPPORTED_FINGER_NUM 5 |
122 | |
123 | #define CHIP_ON_DELAY 15 // ms |
124 | #define FIRMWARE_ON_DELAY 40 // ms |
125 | |
126 | struct point_coord { |
127 | __le16 x; |
128 | __le16 y; |
129 | u8 width; |
130 | u8 sub_status; |
131 | // currently unused, but needed as padding: |
132 | u8 minor_width; |
133 | u8 angle; |
134 | }; |
135 | |
136 | struct touch_event { |
137 | __le16 status; |
138 | u8 finger_mask; |
139 | u8 time_stamp; |
140 | struct point_coord point_coord[MAX_SUPPORTED_FINGER_NUM]; |
141 | }; |
142 | |
143 | struct bt541_ts_data { |
144 | struct i2c_client *client; |
145 | struct input_dev *input_dev; |
146 | struct touchscreen_properties prop; |
147 | struct regulator_bulk_data supplies[2]; |
148 | u32 zinitix_mode; |
149 | }; |
150 | |
151 | static int zinitix_read_data(struct i2c_client *client, |
152 | u16 reg, void *values, size_t length) |
153 | { |
154 | __le16 reg_le = cpu_to_le16(reg); |
155 | int ret; |
156 | |
157 | /* A single i2c_transfer() transaction does not work here. */ |
158 | ret = i2c_master_send(client, buf: (u8 *)®_le, count: sizeof(reg_le)); |
159 | if (ret != sizeof(reg_le)) |
160 | return ret < 0 ? ret : -EIO; |
161 | |
162 | ret = i2c_master_recv(client, buf: (u8 *)values, count: length); |
163 | if (ret != length) |
164 | return ret < 0 ? ret : -EIO; |
165 | |
166 | return 0; |
167 | } |
168 | |
169 | static int zinitix_write_u16(struct i2c_client *client, u16 reg, u16 value) |
170 | { |
171 | __le16 packet[2] = {cpu_to_le16(reg), cpu_to_le16(value)}; |
172 | int ret; |
173 | |
174 | ret = i2c_master_send(client, buf: (u8 *)packet, count: sizeof(packet)); |
175 | if (ret != sizeof(packet)) |
176 | return ret < 0 ? ret : -EIO; |
177 | |
178 | return 0; |
179 | } |
180 | |
181 | static int zinitix_write_cmd(struct i2c_client *client, u16 reg) |
182 | { |
183 | __le16 reg_le = cpu_to_le16(reg); |
184 | int ret; |
185 | |
186 | ret = i2c_master_send(client, buf: (u8 *)®_le, count: sizeof(reg_le)); |
187 | if (ret != sizeof(reg_le)) |
188 | return ret < 0 ? ret : -EIO; |
189 | |
190 | return 0; |
191 | } |
192 | |
193 | static int zinitix_init_touch(struct bt541_ts_data *bt541) |
194 | { |
195 | struct i2c_client *client = bt541->client; |
196 | int i; |
197 | int error; |
198 | |
199 | error = zinitix_write_cmd(client, ZINITIX_SWRESET_CMD); |
200 | if (error) { |
201 | dev_err(&client->dev, "Failed to write reset command\n" ); |
202 | return error; |
203 | } |
204 | |
205 | error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, value: 0x0); |
206 | if (error) { |
207 | dev_err(&client->dev, |
208 | "Failed to reset interrupt enable flag\n" ); |
209 | return error; |
210 | } |
211 | |
212 | /* initialize */ |
213 | error = zinitix_write_u16(client, ZINITIX_X_RESOLUTION, |
214 | value: bt541->prop.max_x); |
215 | if (error) |
216 | return error; |
217 | |
218 | error = zinitix_write_u16(client, ZINITIX_Y_RESOLUTION, |
219 | value: bt541->prop.max_y); |
220 | if (error) |
221 | return error; |
222 | |
223 | error = zinitix_write_u16(client, ZINITIX_SUPPORTED_FINGER_NUM, |
224 | MAX_SUPPORTED_FINGER_NUM); |
225 | if (error) |
226 | return error; |
227 | |
228 | error = zinitix_write_u16(client, ZINITIX_INITIAL_TOUCH_MODE, |
229 | value: bt541->zinitix_mode); |
230 | if (error) |
231 | return error; |
232 | |
233 | error = zinitix_write_u16(client, ZINITIX_TOUCH_MODE, |
234 | value: bt541->zinitix_mode); |
235 | if (error) |
236 | return error; |
237 | |
238 | error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, |
239 | BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | |
240 | BIT_UP); |
241 | if (error) |
242 | return error; |
243 | |
244 | /* clear queue */ |
245 | for (i = 0; i < 10; i++) { |
246 | zinitix_write_cmd(client, ZINITIX_CLEAR_INT_STATUS_CMD); |
247 | udelay(10); |
248 | } |
249 | |
250 | return 0; |
251 | } |
252 | |
253 | static int zinitix_init_regulators(struct bt541_ts_data *bt541) |
254 | { |
255 | struct device *dev = &bt541->client->dev; |
256 | int error; |
257 | |
258 | /* |
259 | * Some older device trees have erroneous names for the regulators, |
260 | * so check if "vddo" is present and in that case use these names. |
261 | * Else use the proper supply names on the component. |
262 | */ |
263 | if (of_property_present(np: dev->of_node, propname: "vddo-supply" )) { |
264 | bt541->supplies[0].supply = "vdd" ; |
265 | bt541->supplies[1].supply = "vddo" ; |
266 | } else { |
267 | /* Else use the proper supply names */ |
268 | bt541->supplies[0].supply = "vcca" ; |
269 | bt541->supplies[1].supply = "vdd" ; |
270 | } |
271 | error = devm_regulator_bulk_get(dev, |
272 | ARRAY_SIZE(bt541->supplies), |
273 | consumers: bt541->supplies); |
274 | if (error < 0) { |
275 | dev_err(dev, "Failed to get regulators: %d\n" , error); |
276 | return error; |
277 | } |
278 | |
279 | return 0; |
280 | } |
281 | |
282 | static int zinitix_send_power_on_sequence(struct bt541_ts_data *bt541) |
283 | { |
284 | int error; |
285 | struct i2c_client *client = bt541->client; |
286 | |
287 | error = zinitix_write_u16(client, reg: 0xc000, value: 0x0001); |
288 | if (error) { |
289 | dev_err(&client->dev, |
290 | "Failed to send power sequence(vendor cmd enable)\n" ); |
291 | return error; |
292 | } |
293 | udelay(10); |
294 | |
295 | error = zinitix_write_cmd(client, reg: 0xc004); |
296 | if (error) { |
297 | dev_err(&client->dev, |
298 | "Failed to send power sequence (intn clear)\n" ); |
299 | return error; |
300 | } |
301 | udelay(10); |
302 | |
303 | error = zinitix_write_u16(client, reg: 0xc002, value: 0x0001); |
304 | if (error) { |
305 | dev_err(&client->dev, |
306 | "Failed to send power sequence (nvm init)\n" ); |
307 | return error; |
308 | } |
309 | mdelay(2); |
310 | |
311 | error = zinitix_write_u16(client, reg: 0xc001, value: 0x0001); |
312 | if (error) { |
313 | dev_err(&client->dev, |
314 | "Failed to send power sequence (program start)\n" ); |
315 | return error; |
316 | } |
317 | msleep(FIRMWARE_ON_DELAY); |
318 | |
319 | return 0; |
320 | } |
321 | |
322 | static void zinitix_report_finger(struct bt541_ts_data *bt541, int slot, |
323 | const struct point_coord *p) |
324 | { |
325 | u16 x, y; |
326 | |
327 | if (unlikely(!(p->sub_status & |
328 | (SUB_BIT_UP | SUB_BIT_DOWN | SUB_BIT_MOVE)))) { |
329 | dev_dbg(&bt541->client->dev, "unknown finger event %#02x\n" , |
330 | p->sub_status); |
331 | return; |
332 | } |
333 | |
334 | x = le16_to_cpu(p->x); |
335 | y = le16_to_cpu(p->y); |
336 | |
337 | input_mt_slot(dev: bt541->input_dev, slot); |
338 | if (input_mt_report_slot_state(dev: bt541->input_dev, MT_TOOL_FINGER, |
339 | active: !(p->sub_status & SUB_BIT_UP))) { |
340 | touchscreen_report_pos(input: bt541->input_dev, |
341 | prop: &bt541->prop, x, y, multitouch: true); |
342 | input_report_abs(dev: bt541->input_dev, |
343 | ABS_MT_TOUCH_MAJOR, value: p->width); |
344 | dev_dbg(&bt541->client->dev, "finger %d %s (%u, %u)\n" , |
345 | slot, p->sub_status & SUB_BIT_DOWN ? "down" : "move" , |
346 | x, y); |
347 | } else { |
348 | dev_dbg(&bt541->client->dev, "finger %d up (%u, %u)\n" , |
349 | slot, x, y); |
350 | } |
351 | } |
352 | |
353 | static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) |
354 | { |
355 | struct bt541_ts_data *bt541 = bt541_handler; |
356 | struct i2c_client *client = bt541->client; |
357 | struct touch_event touch_event; |
358 | unsigned long finger_mask; |
359 | int error; |
360 | int i; |
361 | |
362 | memset(&touch_event, 0, sizeof(struct touch_event)); |
363 | |
364 | error = zinitix_read_data(client: bt541->client, ZINITIX_POINT_STATUS_REG, |
365 | values: &touch_event, length: sizeof(struct touch_event)); |
366 | if (error) { |
367 | dev_err(&client->dev, "Failed to read in touchpoint struct\n" ); |
368 | goto out; |
369 | } |
370 | |
371 | finger_mask = touch_event.finger_mask; |
372 | for_each_set_bit(i, &finger_mask, MAX_SUPPORTED_FINGER_NUM) { |
373 | const struct point_coord *p = &touch_event.point_coord[i]; |
374 | |
375 | /* Only process contacts that are actually reported */ |
376 | if (p->sub_status & SUB_BIT_EXIST) |
377 | zinitix_report_finger(bt541, slot: i, p); |
378 | } |
379 | |
380 | input_mt_sync_frame(dev: bt541->input_dev); |
381 | input_sync(dev: bt541->input_dev); |
382 | |
383 | out: |
384 | zinitix_write_cmd(client: bt541->client, ZINITIX_CLEAR_INT_STATUS_CMD); |
385 | return IRQ_HANDLED; |
386 | } |
387 | |
388 | static int zinitix_start(struct bt541_ts_data *bt541) |
389 | { |
390 | int error; |
391 | |
392 | error = regulator_bulk_enable(ARRAY_SIZE(bt541->supplies), |
393 | consumers: bt541->supplies); |
394 | if (error) { |
395 | dev_err(&bt541->client->dev, |
396 | "Failed to enable regulators: %d\n" , error); |
397 | return error; |
398 | } |
399 | |
400 | msleep(CHIP_ON_DELAY); |
401 | |
402 | error = zinitix_send_power_on_sequence(bt541); |
403 | if (error) { |
404 | dev_err(&bt541->client->dev, |
405 | "Error while sending power-on sequence: %d\n" , error); |
406 | return error; |
407 | } |
408 | |
409 | error = zinitix_init_touch(bt541); |
410 | if (error) { |
411 | dev_err(&bt541->client->dev, |
412 | "Error while configuring touch IC\n" ); |
413 | return error; |
414 | } |
415 | |
416 | enable_irq(irq: bt541->client->irq); |
417 | |
418 | return 0; |
419 | } |
420 | |
421 | static int zinitix_stop(struct bt541_ts_data *bt541) |
422 | { |
423 | int error; |
424 | |
425 | disable_irq(irq: bt541->client->irq); |
426 | |
427 | error = regulator_bulk_disable(ARRAY_SIZE(bt541->supplies), |
428 | consumers: bt541->supplies); |
429 | if (error) { |
430 | dev_err(&bt541->client->dev, |
431 | "Failed to disable regulators: %d\n" , error); |
432 | return error; |
433 | } |
434 | |
435 | return 0; |
436 | } |
437 | |
438 | static int zinitix_input_open(struct input_dev *dev) |
439 | { |
440 | struct bt541_ts_data *bt541 = input_get_drvdata(dev); |
441 | |
442 | return zinitix_start(bt541); |
443 | } |
444 | |
445 | static void zinitix_input_close(struct input_dev *dev) |
446 | { |
447 | struct bt541_ts_data *bt541 = input_get_drvdata(dev); |
448 | |
449 | zinitix_stop(bt541); |
450 | } |
451 | |
452 | static int zinitix_init_input_dev(struct bt541_ts_data *bt541) |
453 | { |
454 | struct input_dev *input_dev; |
455 | int error; |
456 | |
457 | input_dev = devm_input_allocate_device(&bt541->client->dev); |
458 | if (!input_dev) { |
459 | dev_err(&bt541->client->dev, |
460 | "Failed to allocate input device." ); |
461 | return -ENOMEM; |
462 | } |
463 | |
464 | input_set_drvdata(dev: input_dev, data: bt541); |
465 | bt541->input_dev = input_dev; |
466 | |
467 | input_dev->name = "Zinitix Capacitive TouchScreen" ; |
468 | input_dev->phys = "input/ts" ; |
469 | input_dev->id.bustype = BUS_I2C; |
470 | input_dev->open = zinitix_input_open; |
471 | input_dev->close = zinitix_input_close; |
472 | |
473 | input_set_capability(dev: input_dev, EV_ABS, ABS_MT_POSITION_X); |
474 | input_set_capability(dev: input_dev, EV_ABS, ABS_MT_POSITION_Y); |
475 | input_set_abs_params(dev: input_dev, ABS_MT_WIDTH_MAJOR, min: 0, max: 255, fuzz: 0, flat: 0); |
476 | input_set_abs_params(dev: input_dev, ABS_MT_TOUCH_MAJOR, min: 0, max: 255, fuzz: 0, flat: 0); |
477 | |
478 | touchscreen_parse_properties(input: input_dev, multitouch: true, prop: &bt541->prop); |
479 | if (!bt541->prop.max_x || !bt541->prop.max_y) { |
480 | dev_err(&bt541->client->dev, |
481 | "Touchscreen-size-x and/or touchscreen-size-y not set in dts\n" ); |
482 | return -EINVAL; |
483 | } |
484 | |
485 | error = input_mt_init_slots(dev: input_dev, MAX_SUPPORTED_FINGER_NUM, |
486 | INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); |
487 | if (error) { |
488 | dev_err(&bt541->client->dev, |
489 | "Failed to initialize MT slots: %d" , error); |
490 | return error; |
491 | } |
492 | |
493 | error = input_register_device(input_dev); |
494 | if (error) { |
495 | dev_err(&bt541->client->dev, |
496 | "Failed to register input device: %d" , error); |
497 | return error; |
498 | } |
499 | |
500 | return 0; |
501 | } |
502 | |
503 | static int zinitix_ts_probe(struct i2c_client *client) |
504 | { |
505 | struct bt541_ts_data *bt541; |
506 | int error; |
507 | |
508 | if (!i2c_check_functionality(adap: client->adapter, I2C_FUNC_I2C)) { |
509 | dev_err(&client->dev, |
510 | "Failed to assert adapter's support for plain I2C.\n" ); |
511 | return -ENXIO; |
512 | } |
513 | |
514 | bt541 = devm_kzalloc(dev: &client->dev, size: sizeof(*bt541), GFP_KERNEL); |
515 | if (!bt541) |
516 | return -ENOMEM; |
517 | |
518 | bt541->client = client; |
519 | i2c_set_clientdata(client, data: bt541); |
520 | |
521 | error = zinitix_init_regulators(bt541); |
522 | if (error) { |
523 | dev_err(&client->dev, |
524 | "Failed to initialize regulators: %d\n" , error); |
525 | return error; |
526 | } |
527 | |
528 | error = devm_request_threaded_irq(dev: &client->dev, irq: client->irq, |
529 | NULL, thread_fn: zinitix_ts_irq_handler, |
530 | IRQF_ONESHOT | IRQF_NO_AUTOEN, |
531 | devname: client->name, dev_id: bt541); |
532 | if (error) { |
533 | dev_err(&client->dev, "Failed to request IRQ: %d\n" , error); |
534 | return error; |
535 | } |
536 | |
537 | error = zinitix_init_input_dev(bt541); |
538 | if (error) { |
539 | dev_err(&client->dev, |
540 | "Failed to initialize input device: %d\n" , error); |
541 | return error; |
542 | } |
543 | |
544 | error = device_property_read_u32(dev: &client->dev, propname: "zinitix,mode" , |
545 | val: &bt541->zinitix_mode); |
546 | if (error < 0) { |
547 | /* fall back to mode 2 */ |
548 | bt541->zinitix_mode = DEFAULT_TOUCH_POINT_MODE; |
549 | } |
550 | |
551 | if (bt541->zinitix_mode != 2) { |
552 | /* |
553 | * If there are devices that don't support mode 2, support |
554 | * for other modes (0, 1) will be needed. |
555 | */ |
556 | dev_err(&client->dev, |
557 | "Malformed zinitix,mode property, must be 2 (supplied: %d)\n" , |
558 | bt541->zinitix_mode); |
559 | return -EINVAL; |
560 | } |
561 | |
562 | return 0; |
563 | } |
564 | |
565 | static int zinitix_suspend(struct device *dev) |
566 | { |
567 | struct i2c_client *client = to_i2c_client(dev); |
568 | struct bt541_ts_data *bt541 = i2c_get_clientdata(client); |
569 | |
570 | mutex_lock(&bt541->input_dev->mutex); |
571 | |
572 | if (input_device_enabled(dev: bt541->input_dev)) |
573 | zinitix_stop(bt541); |
574 | |
575 | mutex_unlock(lock: &bt541->input_dev->mutex); |
576 | |
577 | return 0; |
578 | } |
579 | |
580 | static int zinitix_resume(struct device *dev) |
581 | { |
582 | struct i2c_client *client = to_i2c_client(dev); |
583 | struct bt541_ts_data *bt541 = i2c_get_clientdata(client); |
584 | int ret = 0; |
585 | |
586 | mutex_lock(&bt541->input_dev->mutex); |
587 | |
588 | if (input_device_enabled(dev: bt541->input_dev)) |
589 | ret = zinitix_start(bt541); |
590 | |
591 | mutex_unlock(lock: &bt541->input_dev->mutex); |
592 | |
593 | return ret; |
594 | } |
595 | |
596 | static DEFINE_SIMPLE_DEV_PM_OPS(zinitix_pm_ops, zinitix_suspend, zinitix_resume); |
597 | |
598 | #ifdef CONFIG_OF |
599 | static const struct of_device_id zinitix_of_match[] = { |
600 | { .compatible = "zinitix,bt402" }, |
601 | { .compatible = "zinitix,bt403" }, |
602 | { .compatible = "zinitix,bt404" }, |
603 | { .compatible = "zinitix,bt412" }, |
604 | { .compatible = "zinitix,bt413" }, |
605 | { .compatible = "zinitix,bt431" }, |
606 | { .compatible = "zinitix,bt432" }, |
607 | { .compatible = "zinitix,bt531" }, |
608 | { .compatible = "zinitix,bt532" }, |
609 | { .compatible = "zinitix,bt538" }, |
610 | { .compatible = "zinitix,bt541" }, |
611 | { .compatible = "zinitix,bt548" }, |
612 | { .compatible = "zinitix,bt554" }, |
613 | { .compatible = "zinitix,at100" }, |
614 | { } |
615 | }; |
616 | MODULE_DEVICE_TABLE(of, zinitix_of_match); |
617 | #endif |
618 | |
619 | static struct i2c_driver zinitix_ts_driver = { |
620 | .probe = zinitix_ts_probe, |
621 | .driver = { |
622 | .name = "Zinitix-TS" , |
623 | .pm = pm_sleep_ptr(&zinitix_pm_ops), |
624 | .of_match_table = of_match_ptr(zinitix_of_match), |
625 | }, |
626 | }; |
627 | module_i2c_driver(zinitix_ts_driver); |
628 | |
629 | MODULE_AUTHOR("Michael Srba <Michael.Srba@seznam.cz>" ); |
630 | MODULE_DESCRIPTION("Zinitix touchscreen driver" ); |
631 | MODULE_LICENSE("GPL v2" ); |
632 | |