1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * ILITEK Touch IC driver for 23XX, 25XX and Lego series |
4 | * |
5 | * Copyright (C) 2011 ILI Technology Corporation. |
6 | * Copyright (C) 2020 Luca Hsu <luca_hsu@ilitek.com> |
7 | * Copyright (C) 2021 Joe Hung <joe_hung@ilitek.com> |
8 | */ |
9 | |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/input.h> |
13 | #include <linux/input/mt.h> |
14 | #include <linux/i2c.h> |
15 | #include <linux/slab.h> |
16 | #include <linux/delay.h> |
17 | #include <linux/interrupt.h> |
18 | #include <linux/gpio.h> |
19 | #include <linux/gpio/consumer.h> |
20 | #include <linux/errno.h> |
21 | #include <linux/acpi.h> |
22 | #include <linux/input/touchscreen.h> |
23 | #include <asm/unaligned.h> |
24 | |
25 | |
26 | #define ILITEK_TS_NAME "ilitek_ts" |
27 | #define BL_V1_8 0x108 |
28 | #define BL_V1_7 0x107 |
29 | #define BL_V1_6 0x106 |
30 | |
31 | #define ILITEK_TP_CMD_GET_TP_RES 0x20 |
32 | #define ILITEK_TP_CMD_GET_SCRN_RES 0x21 |
33 | #define ILITEK_TP_CMD_SET_IC_SLEEP 0x30 |
34 | #define ILITEK_TP_CMD_SET_IC_WAKE 0x31 |
35 | #define ILITEK_TP_CMD_GET_FW_VER 0x40 |
36 | #define ILITEK_TP_CMD_GET_PRL_VER 0x42 |
37 | #define ILITEK_TP_CMD_GET_MCU_VER 0x61 |
38 | #define ILITEK_TP_CMD_GET_IC_MODE 0xC0 |
39 | |
40 | #define REPORT_COUNT_ADDRESS 61 |
41 | #define ILITEK_SUPPORT_MAX_POINT 40 |
42 | |
43 | struct ilitek_protocol_info { |
44 | u16 ver; |
45 | u8 ver_major; |
46 | }; |
47 | |
48 | struct ilitek_ts_data { |
49 | struct i2c_client *client; |
50 | struct gpio_desc *reset_gpio; |
51 | struct input_dev *input_dev; |
52 | struct touchscreen_properties prop; |
53 | |
54 | const struct ilitek_protocol_map *ptl_cb_func; |
55 | struct ilitek_protocol_info ptl; |
56 | |
57 | char product_id[30]; |
58 | u16 mcu_ver; |
59 | u8 ic_mode; |
60 | u8 firmware_ver[8]; |
61 | |
62 | s32 reset_time; |
63 | s32 screen_max_x; |
64 | s32 screen_max_y; |
65 | s32 screen_min_x; |
66 | s32 screen_min_y; |
67 | s32 max_tp; |
68 | }; |
69 | |
70 | struct ilitek_protocol_map { |
71 | u16 cmd; |
72 | const char *name; |
73 | int (*func)(struct ilitek_ts_data *ts, u16 cmd, u8 *inbuf, u8 *outbuf); |
74 | }; |
75 | |
76 | enum ilitek_cmds { |
77 | /* common cmds */ |
78 | GET_PTL_VER = 0, |
79 | GET_FW_VER, |
80 | GET_SCRN_RES, |
81 | GET_TP_RES, |
82 | GET_IC_MODE, |
83 | GET_MCU_VER, |
84 | SET_IC_SLEEP, |
85 | SET_IC_WAKE, |
86 | |
87 | /* ALWAYS keep at the end */ |
88 | MAX_CMD_CNT |
89 | }; |
90 | |
91 | /* ILITEK I2C R/W APIs */ |
92 | static int ilitek_i2c_write_and_read(struct ilitek_ts_data *ts, |
93 | u8 *cmd, int write_len, int delay, |
94 | u8 *data, int read_len) |
95 | { |
96 | int error; |
97 | struct i2c_client *client = ts->client; |
98 | struct i2c_msg msgs[] = { |
99 | { |
100 | .addr = client->addr, |
101 | .flags = 0, |
102 | .len = write_len, |
103 | .buf = cmd, |
104 | }, |
105 | { |
106 | .addr = client->addr, |
107 | .flags = I2C_M_RD, |
108 | .len = read_len, |
109 | .buf = data, |
110 | }, |
111 | }; |
112 | |
113 | if (delay == 0 && write_len > 0 && read_len > 0) { |
114 | error = i2c_transfer(adap: client->adapter, msgs, ARRAY_SIZE(msgs)); |
115 | if (error < 0) |
116 | return error; |
117 | } else { |
118 | if (write_len > 0) { |
119 | error = i2c_transfer(adap: client->adapter, msgs, num: 1); |
120 | if (error < 0) |
121 | return error; |
122 | } |
123 | if (delay > 0) |
124 | mdelay(delay); |
125 | |
126 | if (read_len > 0) { |
127 | error = i2c_transfer(adap: client->adapter, msgs: msgs + 1, num: 1); |
128 | if (error < 0) |
129 | return error; |
130 | } |
131 | } |
132 | |
133 | return 0; |
134 | } |
135 | |
136 | /* ILITEK ISR APIs */ |
137 | static void ilitek_touch_down(struct ilitek_ts_data *ts, unsigned int id, |
138 | unsigned int x, unsigned int y) |
139 | { |
140 | struct input_dev *input = ts->input_dev; |
141 | |
142 | input_mt_slot(dev: input, slot: id); |
143 | input_mt_report_slot_state(dev: input, MT_TOOL_FINGER, active: true); |
144 | |
145 | touchscreen_report_pos(input, prop: &ts->prop, x, y, multitouch: true); |
146 | } |
147 | |
148 | static int ilitek_process_and_report_v6(struct ilitek_ts_data *ts) |
149 | { |
150 | int error = 0; |
151 | u8 buf[512]; |
152 | int packet_len = 5; |
153 | int packet_max_point = 10; |
154 | int report_max_point; |
155 | int i, count; |
156 | struct input_dev *input = ts->input_dev; |
157 | struct device *dev = &ts->client->dev; |
158 | unsigned int x, y, status, id; |
159 | |
160 | error = ilitek_i2c_write_and_read(ts, NULL, write_len: 0, delay: 0, data: buf, read_len: 64); |
161 | if (error) { |
162 | dev_err(dev, "get touch info failed, err:%d\n" , error); |
163 | goto err_sync_frame; |
164 | } |
165 | |
166 | report_max_point = buf[REPORT_COUNT_ADDRESS]; |
167 | if (report_max_point > ts->max_tp) { |
168 | dev_err(dev, "FW report max point:%d > panel info. max:%d\n" , |
169 | report_max_point, ts->max_tp); |
170 | error = -EINVAL; |
171 | goto err_sync_frame; |
172 | } |
173 | |
174 | count = DIV_ROUND_UP(report_max_point, packet_max_point); |
175 | for (i = 1; i < count; i++) { |
176 | error = ilitek_i2c_write_and_read(ts, NULL, write_len: 0, delay: 0, |
177 | data: buf + i * 64, read_len: 64); |
178 | if (error) { |
179 | dev_err(dev, "get touch info. failed, cnt:%d, err:%d\n" , |
180 | count, error); |
181 | goto err_sync_frame; |
182 | } |
183 | } |
184 | |
185 | for (i = 0; i < report_max_point; i++) { |
186 | status = buf[i * packet_len + 1] & 0x40; |
187 | if (!status) |
188 | continue; |
189 | |
190 | id = buf[i * packet_len + 1] & 0x3F; |
191 | |
192 | x = get_unaligned_le16(p: buf + i * packet_len + 2); |
193 | y = get_unaligned_le16(p: buf + i * packet_len + 4); |
194 | |
195 | if (x > ts->screen_max_x || x < ts->screen_min_x || |
196 | y > ts->screen_max_y || y < ts->screen_min_y) { |
197 | dev_warn(dev, "invalid position, X[%d,%u,%d], Y[%d,%u,%d]\n" , |
198 | ts->screen_min_x, x, ts->screen_max_x, |
199 | ts->screen_min_y, y, ts->screen_max_y); |
200 | continue; |
201 | } |
202 | |
203 | ilitek_touch_down(ts, id, x, y); |
204 | } |
205 | |
206 | err_sync_frame: |
207 | input_mt_sync_frame(dev: input); |
208 | input_sync(dev: input); |
209 | return error; |
210 | } |
211 | |
212 | /* APIs of cmds for ILITEK Touch IC */ |
213 | static int api_protocol_set_cmd(struct ilitek_ts_data *ts, |
214 | u16 idx, u8 *inbuf, u8 *outbuf) |
215 | { |
216 | u16 cmd; |
217 | int error; |
218 | |
219 | if (idx >= MAX_CMD_CNT) |
220 | return -EINVAL; |
221 | |
222 | cmd = ts->ptl_cb_func[idx].cmd; |
223 | error = ts->ptl_cb_func[idx].func(ts, cmd, inbuf, outbuf); |
224 | if (error) |
225 | return error; |
226 | |
227 | return 0; |
228 | } |
229 | |
230 | static int api_protocol_get_ptl_ver(struct ilitek_ts_data *ts, |
231 | u16 cmd, u8 *inbuf, u8 *outbuf) |
232 | { |
233 | int error; |
234 | u8 buf[64]; |
235 | |
236 | buf[0] = cmd; |
237 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 3); |
238 | if (error) |
239 | return error; |
240 | |
241 | ts->ptl.ver = get_unaligned_be16(p: outbuf); |
242 | ts->ptl.ver_major = outbuf[0]; |
243 | |
244 | return 0; |
245 | } |
246 | |
247 | static int api_protocol_get_mcu_ver(struct ilitek_ts_data *ts, |
248 | u16 cmd, u8 *inbuf, u8 *outbuf) |
249 | { |
250 | int error; |
251 | u8 buf[64]; |
252 | |
253 | buf[0] = cmd; |
254 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 32); |
255 | if (error) |
256 | return error; |
257 | |
258 | ts->mcu_ver = get_unaligned_le16(p: outbuf); |
259 | memset(ts->product_id, 0, sizeof(ts->product_id)); |
260 | memcpy(ts->product_id, outbuf + 6, 26); |
261 | |
262 | return 0; |
263 | } |
264 | |
265 | static int api_protocol_get_fw_ver(struct ilitek_ts_data *ts, |
266 | u16 cmd, u8 *inbuf, u8 *outbuf) |
267 | { |
268 | int error; |
269 | u8 buf[64]; |
270 | |
271 | buf[0] = cmd; |
272 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 8); |
273 | if (error) |
274 | return error; |
275 | |
276 | memcpy(ts->firmware_ver, outbuf, 8); |
277 | |
278 | return 0; |
279 | } |
280 | |
281 | static int api_protocol_get_scrn_res(struct ilitek_ts_data *ts, |
282 | u16 cmd, u8 *inbuf, u8 *outbuf) |
283 | { |
284 | int error; |
285 | u8 buf[64]; |
286 | |
287 | buf[0] = cmd; |
288 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 8); |
289 | if (error) |
290 | return error; |
291 | |
292 | ts->screen_min_x = get_unaligned_le16(p: outbuf); |
293 | ts->screen_min_y = get_unaligned_le16(p: outbuf + 2); |
294 | ts->screen_max_x = get_unaligned_le16(p: outbuf + 4); |
295 | ts->screen_max_y = get_unaligned_le16(p: outbuf + 6); |
296 | |
297 | return 0; |
298 | } |
299 | |
300 | static int api_protocol_get_tp_res(struct ilitek_ts_data *ts, |
301 | u16 cmd, u8 *inbuf, u8 *outbuf) |
302 | { |
303 | int error; |
304 | u8 buf[64]; |
305 | |
306 | buf[0] = cmd; |
307 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 15); |
308 | if (error) |
309 | return error; |
310 | |
311 | ts->max_tp = outbuf[8]; |
312 | if (ts->max_tp > ILITEK_SUPPORT_MAX_POINT) { |
313 | dev_err(&ts->client->dev, "Invalid MAX_TP:%d from FW\n" , |
314 | ts->max_tp); |
315 | return -EINVAL; |
316 | } |
317 | |
318 | return 0; |
319 | } |
320 | |
321 | static int api_protocol_get_ic_mode(struct ilitek_ts_data *ts, |
322 | u16 cmd, u8 *inbuf, u8 *outbuf) |
323 | { |
324 | int error; |
325 | u8 buf[64]; |
326 | |
327 | buf[0] = cmd; |
328 | error = ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 5, data: outbuf, read_len: 2); |
329 | if (error) |
330 | return error; |
331 | |
332 | ts->ic_mode = outbuf[0]; |
333 | return 0; |
334 | } |
335 | |
336 | static int api_protocol_set_ic_sleep(struct ilitek_ts_data *ts, |
337 | u16 cmd, u8 *inbuf, u8 *outbuf) |
338 | { |
339 | u8 buf[64]; |
340 | |
341 | buf[0] = cmd; |
342 | return ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 0, NULL, read_len: 0); |
343 | } |
344 | |
345 | static int api_protocol_set_ic_wake(struct ilitek_ts_data *ts, |
346 | u16 cmd, u8 *inbuf, u8 *outbuf) |
347 | { |
348 | u8 buf[64]; |
349 | |
350 | buf[0] = cmd; |
351 | return ilitek_i2c_write_and_read(ts, cmd: buf, write_len: 1, delay: 0, NULL, read_len: 0); |
352 | } |
353 | |
354 | static const struct ilitek_protocol_map ptl_func_map[] = { |
355 | /* common cmds */ |
356 | [GET_PTL_VER] = { |
357 | ILITEK_TP_CMD_GET_PRL_VER, "GET_PTL_VER" , |
358 | api_protocol_get_ptl_ver |
359 | }, |
360 | [GET_FW_VER] = { |
361 | ILITEK_TP_CMD_GET_FW_VER, .name: "GET_FW_VER" , |
362 | .func: api_protocol_get_fw_ver |
363 | }, |
364 | [GET_SCRN_RES] = { |
365 | ILITEK_TP_CMD_GET_SCRN_RES, .name: "GET_SCRN_RES" , |
366 | .func: api_protocol_get_scrn_res |
367 | }, |
368 | [GET_TP_RES] = { |
369 | ILITEK_TP_CMD_GET_TP_RES, .name: "GET_TP_RES" , |
370 | .func: api_protocol_get_tp_res |
371 | }, |
372 | [GET_IC_MODE] = { |
373 | ILITEK_TP_CMD_GET_IC_MODE, .name: "GET_IC_MODE" , |
374 | .func: api_protocol_get_ic_mode |
375 | }, |
376 | [GET_MCU_VER] = { |
377 | ILITEK_TP_CMD_GET_MCU_VER, .name: "GET_MOD_VER" , |
378 | .func: api_protocol_get_mcu_ver |
379 | }, |
380 | [SET_IC_SLEEP] = { |
381 | ILITEK_TP_CMD_SET_IC_SLEEP, .name: "SET_IC_SLEEP" , |
382 | .func: api_protocol_set_ic_sleep |
383 | }, |
384 | [SET_IC_WAKE] = { |
385 | ILITEK_TP_CMD_SET_IC_WAKE, .name: "SET_IC_WAKE" , |
386 | .func: api_protocol_set_ic_wake |
387 | }, |
388 | }; |
389 | |
390 | /* Probe APIs */ |
391 | static void ilitek_reset(struct ilitek_ts_data *ts, int delay) |
392 | { |
393 | if (ts->reset_gpio) { |
394 | gpiod_set_value(desc: ts->reset_gpio, value: 1); |
395 | mdelay(10); |
396 | gpiod_set_value(desc: ts->reset_gpio, value: 0); |
397 | mdelay(delay); |
398 | } |
399 | } |
400 | |
401 | static int ilitek_protocol_init(struct ilitek_ts_data *ts) |
402 | { |
403 | int error; |
404 | u8 outbuf[64]; |
405 | |
406 | ts->ptl_cb_func = ptl_func_map; |
407 | ts->reset_time = 600; |
408 | |
409 | error = api_protocol_set_cmd(ts, idx: GET_PTL_VER, NULL, outbuf); |
410 | if (error) |
411 | return error; |
412 | |
413 | /* Protocol v3 is not support currently */ |
414 | if (ts->ptl.ver_major == 0x3 || |
415 | ts->ptl.ver == BL_V1_6 || |
416 | ts->ptl.ver == BL_V1_7) |
417 | return -EINVAL; |
418 | |
419 | return 0; |
420 | } |
421 | |
422 | static int ilitek_read_tp_info(struct ilitek_ts_data *ts, bool boot) |
423 | { |
424 | u8 outbuf[256]; |
425 | int error; |
426 | |
427 | error = api_protocol_set_cmd(ts, idx: GET_PTL_VER, NULL, outbuf); |
428 | if (error) |
429 | return error; |
430 | |
431 | error = api_protocol_set_cmd(ts, idx: GET_MCU_VER, NULL, outbuf); |
432 | if (error) |
433 | return error; |
434 | |
435 | error = api_protocol_set_cmd(ts, idx: GET_FW_VER, NULL, outbuf); |
436 | if (error) |
437 | return error; |
438 | |
439 | if (boot) { |
440 | error = api_protocol_set_cmd(ts, idx: GET_SCRN_RES, NULL, |
441 | outbuf); |
442 | if (error) |
443 | return error; |
444 | } |
445 | |
446 | error = api_protocol_set_cmd(ts, idx: GET_TP_RES, NULL, outbuf); |
447 | if (error) |
448 | return error; |
449 | |
450 | error = api_protocol_set_cmd(ts, idx: GET_IC_MODE, NULL, outbuf); |
451 | if (error) |
452 | return error; |
453 | |
454 | return 0; |
455 | } |
456 | |
457 | static int ilitek_input_dev_init(struct device *dev, struct ilitek_ts_data *ts) |
458 | { |
459 | int error; |
460 | struct input_dev *input; |
461 | |
462 | input = devm_input_allocate_device(dev); |
463 | if (!input) |
464 | return -ENOMEM; |
465 | |
466 | ts->input_dev = input; |
467 | input->name = ILITEK_TS_NAME; |
468 | input->id.bustype = BUS_I2C; |
469 | |
470 | __set_bit(INPUT_PROP_DIRECT, input->propbit); |
471 | |
472 | input_set_abs_params(dev: input, ABS_MT_POSITION_X, |
473 | min: ts->screen_min_x, max: ts->screen_max_x, fuzz: 0, flat: 0); |
474 | input_set_abs_params(dev: input, ABS_MT_POSITION_Y, |
475 | min: ts->screen_min_y, max: ts->screen_max_y, fuzz: 0, flat: 0); |
476 | |
477 | touchscreen_parse_properties(input, multitouch: true, prop: &ts->prop); |
478 | |
479 | error = input_mt_init_slots(dev: input, num_slots: ts->max_tp, |
480 | INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); |
481 | if (error) { |
482 | dev_err(dev, "initialize MT slots failed, err:%d\n" , error); |
483 | return error; |
484 | } |
485 | |
486 | error = input_register_device(input); |
487 | if (error) { |
488 | dev_err(dev, "register input device failed, err:%d\n" , error); |
489 | return error; |
490 | } |
491 | |
492 | return 0; |
493 | } |
494 | |
495 | static irqreturn_t ilitek_i2c_isr(int irq, void *dev_id) |
496 | { |
497 | struct ilitek_ts_data *ts = dev_id; |
498 | int error; |
499 | |
500 | error = ilitek_process_and_report_v6(ts); |
501 | if (error < 0) { |
502 | dev_err(&ts->client->dev, "[%s] err:%d\n" , __func__, error); |
503 | return IRQ_NONE; |
504 | } |
505 | |
506 | return IRQ_HANDLED; |
507 | } |
508 | |
509 | static ssize_t firmware_version_show(struct device *dev, |
510 | struct device_attribute *attr, char *buf) |
511 | { |
512 | struct i2c_client *client = to_i2c_client(dev); |
513 | struct ilitek_ts_data *ts = i2c_get_clientdata(client); |
514 | |
515 | return sysfs_emit(buf, |
516 | fmt: "fw version: [%02X%02X.%02X%02X.%02X%02X.%02X%02X]\n" , |
517 | ts->firmware_ver[0], ts->firmware_ver[1], |
518 | ts->firmware_ver[2], ts->firmware_ver[3], |
519 | ts->firmware_ver[4], ts->firmware_ver[5], |
520 | ts->firmware_ver[6], ts->firmware_ver[7]); |
521 | } |
522 | static DEVICE_ATTR_RO(firmware_version); |
523 | |
524 | static ssize_t product_id_show(struct device *dev, |
525 | struct device_attribute *attr, char *buf) |
526 | { |
527 | struct i2c_client *client = to_i2c_client(dev); |
528 | struct ilitek_ts_data *ts = i2c_get_clientdata(client); |
529 | |
530 | return sysfs_emit(buf, fmt: "product id: [%04X], module: [%s]\n" , |
531 | ts->mcu_ver, ts->product_id); |
532 | } |
533 | static DEVICE_ATTR_RO(product_id); |
534 | |
535 | static struct attribute *ilitek_sysfs_attrs[] = { |
536 | &dev_attr_firmware_version.attr, |
537 | &dev_attr_product_id.attr, |
538 | NULL |
539 | }; |
540 | ATTRIBUTE_GROUPS(ilitek_sysfs); |
541 | |
542 | static int ilitek_ts_i2c_probe(struct i2c_client *client) |
543 | { |
544 | struct ilitek_ts_data *ts; |
545 | struct device *dev = &client->dev; |
546 | int error; |
547 | |
548 | if (!i2c_check_functionality(adap: client->adapter, I2C_FUNC_I2C)) { |
549 | dev_err(dev, "i2c check functionality failed\n" ); |
550 | return -ENXIO; |
551 | } |
552 | |
553 | ts = devm_kzalloc(dev, size: sizeof(*ts), GFP_KERNEL); |
554 | if (!ts) |
555 | return -ENOMEM; |
556 | |
557 | ts->client = client; |
558 | i2c_set_clientdata(client, data: ts); |
559 | |
560 | ts->reset_gpio = devm_gpiod_get_optional(dev, con_id: "reset" , flags: GPIOD_OUT_LOW); |
561 | if (IS_ERR(ptr: ts->reset_gpio)) { |
562 | error = PTR_ERR(ptr: ts->reset_gpio); |
563 | dev_err(dev, "request gpiod failed: %d" , error); |
564 | return error; |
565 | } |
566 | |
567 | ilitek_reset(ts, delay: 1000); |
568 | |
569 | error = ilitek_protocol_init(ts); |
570 | if (error) { |
571 | dev_err(dev, "protocol init failed: %d" , error); |
572 | return error; |
573 | } |
574 | |
575 | error = ilitek_read_tp_info(ts, boot: true); |
576 | if (error) { |
577 | dev_err(dev, "read tp info failed: %d" , error); |
578 | return error; |
579 | } |
580 | |
581 | error = ilitek_input_dev_init(dev, ts); |
582 | if (error) { |
583 | dev_err(dev, "input dev init failed: %d" , error); |
584 | return error; |
585 | } |
586 | |
587 | error = devm_request_threaded_irq(dev, irq: ts->client->irq, |
588 | NULL, thread_fn: ilitek_i2c_isr, IRQF_ONESHOT, |
589 | devname: "ilitek_touch_irq" , dev_id: ts); |
590 | if (error) { |
591 | dev_err(dev, "request threaded irq failed: %d\n" , error); |
592 | return error; |
593 | } |
594 | |
595 | return 0; |
596 | } |
597 | |
598 | static int ilitek_suspend(struct device *dev) |
599 | { |
600 | struct i2c_client *client = to_i2c_client(dev); |
601 | struct ilitek_ts_data *ts = i2c_get_clientdata(client); |
602 | int error; |
603 | |
604 | disable_irq(irq: client->irq); |
605 | |
606 | if (!device_may_wakeup(dev)) { |
607 | error = api_protocol_set_cmd(ts, idx: SET_IC_SLEEP, NULL, NULL); |
608 | if (error) |
609 | return error; |
610 | } |
611 | |
612 | return 0; |
613 | } |
614 | |
615 | static int ilitek_resume(struct device *dev) |
616 | { |
617 | struct i2c_client *client = to_i2c_client(dev); |
618 | struct ilitek_ts_data *ts = i2c_get_clientdata(client); |
619 | int error; |
620 | |
621 | if (!device_may_wakeup(dev)) { |
622 | error = api_protocol_set_cmd(ts, idx: SET_IC_WAKE, NULL, NULL); |
623 | if (error) |
624 | return error; |
625 | |
626 | ilitek_reset(ts, delay: ts->reset_time); |
627 | } |
628 | |
629 | enable_irq(irq: client->irq); |
630 | |
631 | return 0; |
632 | } |
633 | |
634 | static DEFINE_SIMPLE_DEV_PM_OPS(ilitek_pm_ops, ilitek_suspend, ilitek_resume); |
635 | |
636 | static const struct i2c_device_id ilitek_ts_i2c_id[] = { |
637 | { ILITEK_TS_NAME, 0 }, |
638 | { }, |
639 | }; |
640 | MODULE_DEVICE_TABLE(i2c, ilitek_ts_i2c_id); |
641 | |
642 | #ifdef CONFIG_ACPI |
643 | static const struct acpi_device_id ilitekts_acpi_id[] = { |
644 | { "ILTK0001" , 0 }, |
645 | { }, |
646 | }; |
647 | MODULE_DEVICE_TABLE(acpi, ilitekts_acpi_id); |
648 | #endif |
649 | |
650 | #ifdef CONFIG_OF |
651 | static const struct of_device_id ilitek_ts_i2c_match[] = { |
652 | {.compatible = "ilitek,ili2130" ,}, |
653 | {.compatible = "ilitek,ili2131" ,}, |
654 | {.compatible = "ilitek,ili2132" ,}, |
655 | {.compatible = "ilitek,ili2316" ,}, |
656 | {.compatible = "ilitek,ili2322" ,}, |
657 | {.compatible = "ilitek,ili2323" ,}, |
658 | {.compatible = "ilitek,ili2326" ,}, |
659 | {.compatible = "ilitek,ili2520" ,}, |
660 | {.compatible = "ilitek,ili2521" ,}, |
661 | { }, |
662 | }; |
663 | MODULE_DEVICE_TABLE(of, ilitek_ts_i2c_match); |
664 | #endif |
665 | |
666 | static struct i2c_driver ilitek_ts_i2c_driver = { |
667 | .driver = { |
668 | .name = ILITEK_TS_NAME, |
669 | .dev_groups = ilitek_sysfs_groups, |
670 | .pm = pm_sleep_ptr(&ilitek_pm_ops), |
671 | .of_match_table = of_match_ptr(ilitek_ts_i2c_match), |
672 | .acpi_match_table = ACPI_PTR(ilitekts_acpi_id), |
673 | }, |
674 | .probe = ilitek_ts_i2c_probe, |
675 | .id_table = ilitek_ts_i2c_id, |
676 | }; |
677 | module_i2c_driver(ilitek_ts_i2c_driver); |
678 | |
679 | MODULE_AUTHOR("ILITEK" ); |
680 | MODULE_DESCRIPTION("ILITEK I2C Touchscreen Driver" ); |
681 | MODULE_LICENSE("GPL" ); |
682 | |