1 /*
2 * drivers/input/touchscreen/gslX680.c
3 *
4 * Copyright (c) 2012 Shanghai Basewin
5 * Guan Yuwei<guanyuwei@basewin.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/module.h>
13 #include <linux/delay.h>
14 #include <linux/hrtimer.h>
15 #include <linux/i2c.h>
16 #include <linux/input.h>
17 #include <linux/interrupt.h>
18 #include <linux/io.h>
19 #include <linux/platform_device.h>
20 #include <linux/async.h>
21 #include <linux/irq.h>
22 #include <linux/workqueue.h>
23 #include <linux/proc_fs.h>
24 #include <linux/input/mt.h>
25
26 #include <linux/gpio.h>
27 #include <linux/of_gpio.h>
28 #include "tp_suspend.h"
29
30 #include "gslx680_firefly.h"
31
32 #define REPORT_DATA_ANDROID_4_0
33 #define SLEEP_CLEAR_POINT
34 #ifdef FILTER_POINT
35 #define FILTER_MAX 9
36 #endif
37
38 #define GSLX680_I2C_NAME "gslX680"
39
40 #define GSL_DATA_REG 0x80
41 #define GSL_STATUS_REG 0xe0
42 #define GSL_PAGE_REG 0xf0
43
44 #define PRESS_MAX 255
45 #define MAX_FINGERS 10
46 #define MAX_CONTACTS 10
47 #define DMA_TRANS_LEN 0x20
48
49 #define GPIO_LOW 0
50 #define GPIO_HIGH 1
51
52 /*#define TPD_PROC_DEBUG*/
53 #ifdef TPD_PROC_DEBUG
54 #include <linux/uaccess.h>
55 static struct proc_dir_entry *gsl_config_proc;
56 #define GSL_CONFIG_PROC_FILE "gsl_config"
57 #define CONFIG_LEN 31
58 static char gsl_read[CONFIG_LEN];
59 static u8 gsl_data_proc[8] = {0};
60 static u8 gsl_proc_flag;
61 #endif
62
63 #ifdef GSLX680_COMPATIBLE
64 static char chip_type = 0x36;
65 #endif
66
67 static char is_noid_version;
68 static struct i2c_client *gsl_client;
69 #define I2C_SPEED (200 * 1000)
70
71 #ifdef HAVE_TOUCH_KEY
72 static u16 key;
73 static int key_state_flag;
74 struct key_data {
75 u16 key;
76 u16 x_min;
77 u16 x_max;
78 u16 y_min;
79 u16 y_max;
80 };
81
82 const u16 key_array[] = {
83 KEY_BACK,
84 KEY_HOME,
85 KEY_MENU,
86 KEY_SEARCH,
87 };
88 #define MAX_KEY_NUM ARRAY_SIZE(key_array)
89
90 struct key_data gsl_key_data[MAX_KEY_NUM] = {
91 {KEY_BACK, 2048, 2048, 2048, 2048},
92 {KEY_HOME, 2048, 2048, 2048, 2048},
93 {KEY_MENU, 2048, 2048, 2048, 2048},
94 {KEY_SEARCH, 2048, 2048, 2048, 2048},
95 };
96 #endif
97
98 struct gsl_ts_data {
99 u8 x_index;
100 u8 y_index;
101 u8 z_index;
102 u8 id_index;
103 u8 touch_index;
104 u8 data_reg;
105 u8 status_reg;
106 u8 data_size;
107 u8 touch_bytes;
108 u8 update_data;
109 u8 touch_meta_data;
110 u8 finger_size;
111 };
112
113 static struct gsl_ts_data devices[] = {
114 {
115 .x_index = 6,
116 .y_index = 4,
117 .z_index = 5,
118 .id_index = 7,
119 .data_reg = GSL_DATA_REG,
120 .status_reg = GSL_STATUS_REG,
121 .update_data = 0x4,
122 .touch_bytes = 4,
123 .touch_meta_data = 4,
124 .finger_size = 70,
125 },
126 };
127
128 struct gsl_ts {
129 struct i2c_client *client;
130 struct input_dev *input;
131 struct work_struct work;
132 struct workqueue_struct *wq;
133 struct gsl_ts_data *dd;
134 u8 *touch_data;
135 u8 device_id;
136 int irq;
137 int irq_pin;
138 int rst_pin;
139 int rst_val;
140 int flip_x;
141 int flip_y;
142 int swap_xy;
143 struct tp_device tp;
144 #if defined(CONFIG_HAS_EARLYSUSPEND)
145 struct early_suspend early_suspend;
146 #endif
147 };
148
149 #ifdef GSL_DEBUG
150 #define print_info(fmt, args...) \
151 do { \
152 printk(fmt, ##args); \
153 } while (0)
154 #else
155 #define print_info(fmt, args...)
156 #endif
157
158 static u32 id_sign[MAX_CONTACTS + 1] = {0};
159 static u8 id_state_flag[MAX_CONTACTS + 1] = {0};
160 static u8 id_state_old_flag[MAX_CONTACTS + 1] = {0};
161 static u16 x_old[MAX_CONTACTS + 1] = {0};
162 static u16 y_old[MAX_CONTACTS + 1] = {0};
163 static u16 x_new;
164 static u16 y_new;
165 static struct gsl_ts *gts;
166
gslX680_shutdown_low(void)167 static int gslX680_shutdown_low(void)
168 {
169 if (gpio_is_valid(gts->rst_pin))
170 gpio_set_value(gts->rst_pin, GPIO_LOW);
171
172 return 0;
173 }
174
gslX680_shutdown_high(void)175 static int gslX680_shutdown_high(void)
176 {
177 if (gpio_is_valid(gts->rst_pin))
178 gpio_set_value(gts->rst_pin, GPIO_HIGH);
179
180 return 0;
181 }
182
join_bytes(u8 a,u8 b)183 static inline u16 join_bytes(u8 a, u8 b)
184 {
185 u16 ab = 0;
186
187 ab = ab | a;
188 ab = ab << 8 | b;
189 return ab;
190 }
191
gsl_write_interface(struct i2c_client * client,const u8 reg,u8 * buf,u32 num)192 static u32 gsl_write_interface(struct i2c_client *client, const u8 reg, u8 *buf, u32 num)
193 {
194 struct i2c_msg xfer_msg[1];
195
196 buf[0] = reg;
197 xfer_msg[0].addr = client->addr;
198 xfer_msg[0].len = num + 1;
199 xfer_msg[0].flags = client->flags & I2C_M_TEN;
200 xfer_msg[0].buf = buf;
201
202 return i2c_transfer(client->adapter, xfer_msg, 1) == 1 ? 0 : -EFAULT;
203 }
204
gsl_ts_write(struct i2c_client * client,u8 addr,u8 * pdata,int datalen)205 static int gsl_ts_write(struct i2c_client *client, u8 addr, u8 *pdata, int datalen)
206 {
207 int ret = 0;
208 u8 tmp_buf[128];
209 unsigned int bytelen = 0;
210
211 if (datalen > 125)
212 return -1;
213
214 tmp_buf[0] = addr;
215 bytelen++;
216 if (datalen != 0 && pdata != NULL) {
217 memcpy(&tmp_buf[bytelen], pdata, datalen);
218 bytelen += datalen;
219 }
220 ret = i2c_master_send(client, tmp_buf, bytelen);
221 return ret;
222 }
223
gsl_ts_read(struct i2c_client * client,u8 addr,u8 * pdata,unsigned int datalen)224 static int gsl_ts_read(struct i2c_client *client, u8 addr, u8 *pdata, unsigned int datalen)
225 {
226 int ret = 0;
227
228 if (datalen > 126)
229 return -1;
230
231 ret = gsl_ts_write(client, addr, NULL, 0);
232 if (ret < 0)
233 return ret;
234
235 return i2c_master_recv(client, pdata, datalen);
236 }
237
238 #ifdef GSLX680_COMPATIBLE
judge_chip_type(struct i2c_client * client)239 static void judge_chip_type(struct i2c_client *client)
240 {
241 u8 read_buf[4] = {0, 0, 0, 0};
242
243 printk("org chip_type=%x\n", chip_type);
244 msleep(50);
245 gsl_ts_read(client, 0xfc, read_buf, sizeof(read_buf));
246
247 if (read_buf[2] != 0x36 && read_buf[2] != 0x88) {
248 msleep(50);
249 gsl_ts_read(client, 0xfc, read_buf, sizeof(read_buf));
250 }
251
252 if (read_buf[2] == 0x36) {
253 chip_type = 0x36;
254 is_noid_version = 1;
255 } else {
256 chip_type = 0x88;
257 is_noid_version = 0;
258 }
259
260 print_info("chip_type=%x, reg=%x\n", chip_type, read_buf[2]);
261 }
262 #endif
263
fw2buf(u8 * buf,const u32 * fw)264 static __inline__ void fw2buf(u8 *buf, const u32 *fw)
265 {
266 u32 *u32_buf = (int *)buf;
267 *u32_buf = *fw;
268 }
269
gsl_load_fw(struct i2c_client * client)270 static void gsl_load_fw(struct i2c_client *client)
271 {
272 u8 buf[DMA_TRANS_LEN * 4 + 1] = {0};
273 u8 send_flag = 1;
274 u8 *cur = buf + 1;
275 u32 source_line = 0;
276 u32 source_len = 0;
277 const struct fw_data *ptr_fw = NULL;
278
279 #ifdef GSLX680_COMPATIBLE
280 if (0x36 == chip_type) {
281 ptr_fw = GSL3680B_FW;
282 source_len = ARRAY_SIZE(GSL3680B_FW);
283 }
284 #endif
285 for (source_line = 0; source_line < source_len; source_line++) {
286 /* init page trans, set the page val */
287 if (GSL_PAGE_REG == ptr_fw[source_line].offset) {
288 fw2buf(cur, &ptr_fw[source_line].val);
289 gsl_write_interface(client, GSL_PAGE_REG, buf, 4);
290 send_flag = 1;
291 } else {
292 if (1 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
293 buf[0] = (u8)ptr_fw[source_line].offset;
294
295 fw2buf(cur, &ptr_fw[source_line].val);
296 cur += 4;
297
298 if (0 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20)) {
299 gsl_write_interface(client, buf[0], buf, cur - buf - 1);
300 cur = buf + 1;
301 }
302 send_flag++;
303 }
304 }
305 }
306
test_i2c(struct i2c_client * client)307 static int test_i2c(struct i2c_client *client)
308 {
309 u8 read_buf = 0;
310 u8 write_buf = 0x12;
311 int ret, rc = 1;
312
313 ret = gsl_ts_read(client, 0xf0, &read_buf, sizeof(read_buf));
314 if (ret < 0)
315 rc--;
316
317 msleep(2);
318 ret = gsl_ts_write(client, 0xf0, &write_buf, sizeof(write_buf));
319
320 msleep(2);
321 ret = gsl_ts_read(client, 0xf0, &read_buf, sizeof(read_buf));
322 if (ret < 0)
323 rc--;
324
325 return rc;
326 }
327
startup_chip(struct i2c_client * client)328 static void startup_chip(struct i2c_client *client)
329 {
330 u8 tmp = 0x00;
331 #ifdef GSL_NOID_VERSION
332 if (is_noid_version)
333 gsl_DataInit(gsl_config_data_id_3680B);
334 #endif
335 gsl_ts_write(client, 0xe0, &tmp, 1);
336 msleep(10);
337 }
338
reset_chip(struct i2c_client * client)339 static void reset_chip(struct i2c_client *client)
340 {
341 u8 tmp = 0x88;
342 u8 buf[4] = {0x00};
343
344 gsl_ts_write(client, 0xe0, &tmp, sizeof(tmp));
345 msleep(20);
346 tmp = 0x04;
347 gsl_ts_write(client, 0xe4, &tmp, sizeof(tmp));
348 msleep(10);
349 gsl_ts_write(client, 0xbc, buf, sizeof(buf));
350 msleep(10);
351 }
352
clr_reg(struct i2c_client * client)353 static void clr_reg(struct i2c_client *client)
354 {
355 u8 write_buf[4] = {0};
356
357 write_buf[0] = 0x88;
358 gsl_ts_write(client, 0xe0, &write_buf[0], 1);
359 msleep(20);
360 write_buf[0] = 0x03;
361 gsl_ts_write(client, 0x80, &write_buf[0], 1);
362 msleep(5);
363 write_buf[0] = 0x04;
364 gsl_ts_write(client, 0xe4, &write_buf[0], 1);
365 msleep(5);
366 write_buf[0] = 0x00;
367 gsl_ts_write(client, 0xe0, &write_buf[0], 1);
368 msleep(20);
369 }
370
init_chip(struct i2c_client * client)371 static void init_chip(struct i2c_client *client)
372 {
373 int rc;
374
375 gslX680_shutdown_low();
376 msleep(20);
377 gslX680_shutdown_high();
378 msleep(20);
379 rc = test_i2c(client);
380 if (rc < 0) {
381 print_info("------gslX680 test_i2c error------\n");
382 return;
383 }
384 clr_reg(client);
385 reset_chip(client);
386 gsl_load_fw(client);
387 startup_chip(client);
388 reset_chip(client);
389 startup_chip(client);
390 }
391
check_mem_data(struct i2c_client * client)392 static void check_mem_data(struct i2c_client *client)
393 {
394 u8 read_buf[4] = {0};
395
396 msleep(30);
397 gsl_ts_read(client, 0xb0, read_buf, sizeof(read_buf));
398
399 if (read_buf[3] != 0x5a || read_buf[2] != 0x5a || read_buf[1] != 0x5a || read_buf[0] != 0x5a)
400 init_chip(client);
401 }
402
403 #ifdef TPD_PROC_DEBUG
char_to_int(char ch)404 static int char_to_int(char ch)
405 {
406 if (ch >= '0' && ch <= '9')
407 return (ch - '0');
408 else
409 return (ch - 'a' + 10);
410 }
411
gsl_config_read_proc(char * page,char ** start,off_t off,int count,int * eof,void * data)412 static int gsl_config_read_proc(char *page, char **start, off_t off, int count, int *eof, void *data)
413 {
414 char *ptr = page;
415 char temp_data[5] = {0};
416 unsigned int tmp = 0;
417
418 if ('v' == gsl_read[0] && 's' == gsl_read[1]) {
419 #ifdef GSL_NOID_VERSION
420 tmp = gsl_version_id();
421 #else
422 tmp = 0x20121215;
423 #endif
424 ptr += sprintf(ptr, "version:%x\n", tmp);
425 } else if ('r' == gsl_read[0] && 'e' == gsl_read[1]) {
426 if ('i' == gsl_read[3]) {
427 tmp = (gsl_data_proc[5] << 8) | gsl_data_proc[4];
428 ptr += s printf(ptr, "gsl_config_data_id[%d] = ", tmp);
429 if (tmp >= 0 && tmp < ARRAY_SIZE(gsl_config_data_id_3680B)) {
430 ptr += sprintf(ptr, "%d\n", gsl_config_data_id_3680B[tmp]);
431 } else {
432 gsl_ts_write(gsl_client, 0Xf0, &gsl_data_proc[4], 4);
433 if (gsl_data_proc[0] < 0x80)
434 gsl_ts_read(gsl_client, gsl_data_proc[0], temp_data, 4);
435 gsl_ts_read(gsl_client, gsl_data_proc[0], temp_data, 4);
436
437 ptr += sprintf(ptr, "offset : {0x%02x,0x", gsl_data_proc[0]);
438 ptr += sprintf(ptr, "%02x", temp_data[3]);
439 ptr += sprintf(ptr, "%02x", temp_data[2]);
440 ptr += sprintf(ptr, "%02x", temp_data[1]);
441 ptr += sprintf(ptr, "%02x};\n", temp_data[0]);
442 }
443 }
444 *eof = 1;
445 return (ptr - page);
446 }
447
448 static int gsl_config_write_proc(struct file *file, const char *buffer, unsigned long count, void *data)
449 {
450 u8 buf[8] = {0};
451 char temp_buf[CONFIG_LEN];
452 char *path_buf;
453 int tmp = 0;
454 int tmp1 = 0;
455
456 print_info("[tp-gsl][%s]\n", __func__);
457 if (count > 512) {
458 print_info("size not match [%d:%ld]\n", CONFIG_LEN, count);
459 return -EFAULT;
460 }
461 path_buf = devm_kzalloc(>s->client->dev, count, GFP_KERNEL);
462 if (!path_buf)
463 print_info("alloc path_buf memory error\n");
464
465 if (copy_from_user(path_buf, buffer, count)) {
466 print_info("copy from user fail\n");
467 goto exit_write_proc_out;
468 }
469 memcpy(temp_buf, path_buf, (count < CONFIG_LEN ? count : CONFIG_LEN));
470 print_info("[tp-gsl][%s][%s]\n", __func__, temp_buf);
471
472 buf[3] = char_to_int(temp_buf[14]) << 4 | char_to_int(temp_buf[15]);
473 buf[2] = char_to_int(temp_buf[16]) << 4 | char_to_int(temp_buf[17]);
474 buf[1] = char_to_int(temp_buf[18]) << 4 | char_to_int(temp_buf[19]);
475 buf[0] = char_to_int(temp_buf[20]) << 4 | char_to_int(temp_buf[21]);
476
477 buf[7] = char_to_int(temp_buf[5]) << 4 | char_to_int(temp_buf[6]);
478 buf[6] = char_to_int(temp_buf[7]) << 4 | char_to_int(temp_buf[8]);
479 buf[5] = char_to_int(temp_buf[9]) << 4 | char_to_int(temp_buf[10]);
480 buf[4] = char_to_int(temp_buf[11]) << 4 | char_to_int(temp_buf[12]);
481 if ('v' == temp_buf[0] && 's' == temp_buf[1]) {
482 memcpy(gsl_read, temp_buf, 4);
483 } else if ('s' == temp_buf[0] && 't' == temp_buf[1]) {
484 gsl_proc_flag = 1;
485 reset_chip(gsl_client);
486 } else if ('e' == temp_buf[0] && 'n' == temp_buf[1]) {
487 msleep(20);
488 reset_chip(gsl_client);
489 startup_chip(gsl_client);
490 gsl_proc_flag = 0;
491 } else if ('r' == temp_buf[0] && 'e' == temp_buf[1]) {
492 memcpy(gsl_read, temp_buf, 4);
493 memcpy(gsl_data_proc, buf, 8);
494 } else if ('w' == temp_buf[0] && 'r' == temp_buf[1]) {
495 gsl_ts_write(gsl_client, buf[4], buf, 4);
496 }
497 #ifdef GSL_NOID_VERSION
498 else if ('i' == temp_buf[0] && 'd' == temp_buf[1]) {
499 tmp1 = (buf[7] << 24) | (buf[6] << 16) | (buf[5] << 8) | buf[4];
500 tmp = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
501 if (tmp1 >= 0 && tmp1 < ARRAY_SIZE(gsl_config_data_id_3680B))
502 gsl_config_data_id_3680B[tmp1] = tmp;
503 }
504 #endif
505 exit_write_proc_out:
506 devm_kfree(&client->dev, path_buf);
507 return count;
508 }
509 #endif
510
511 #ifdef FILTER_POINT
512 static void filter_point(u16 x, u16 y, u8 id)
513 {
514 u16 x_err = 0;
515 u16 y_err = 0;
516 u16 filter_step_x = 0, filter_step_y = 0;
517
518 id_sign[id] = id_sign[id] + 1;
519 if (id_sign[id] == 1) {
520 x_old[id] = x;
521 y_old[id] = y;
522 }
523
524 x_err = x > x_old[id] ? (x - x_old[id]) : (x_old[id] - x);
525 y_err = y > y_old[id] ? (y - y_old[id]) : (y_old[id] - y);
526
527 if ((x_err > FILTER_MAX && y_err > FILTER_MAX / 3) || (x_err > FILTER_MAX / 3 && y_err > FILTER_MAX)) {
528 filter_step_x = x_err;
529 filter_step_y = y_err;
530 } else {
531 if (x_err > FILTER_MAX)
532 filter_step_x = x_err;
533 if (y_err > FILTER_MAX)
534 filter_step_y = y_err;
535 }
536
537 if (x_err <= 2 * FILTER_MAX && y_err <= 2 * FILTER_MAX) {
538 filter_step_x >>= 2;
539 filter_step_y >>= 2;
540 } else if (x_err <= 3 * FILTER_MAX && y_err <= 3 * FILTER_MAX) {
541 filter_step_x >>= 1;
542 filter_step_y >>= 1;
543 } else if (x_err <= 4 * FILTER_MAX && y_err <= 4 * FILTER_MAX) {
544 filter_step_x = filter_step_x * 3 / 4;
545 filter_step_y = filter_step_y * 3 / 4;
546 }
547
548 x_new = x > x_old[id] ? (x_old[id] + filter_step_x) : (x_old[id] - filter_step_x);
549 y_new = y > y_old[id] ? (y_old[id] + filter_step_y) : (y_old[id] - filter_step_y);
550
551 x_old[id] = x_new;
552 y_old[id] = y_new;
553 }
554 #else
555 static void record_point(u16 x, u16 y, u8 id)
556 {
557 u16 x_err = 0;
558 u16 y_err = 0;
559
560 id_sign[id] = id_sign[id] + 1;
561
562 if (id_sign[id] == 1) {
563 x_old[id] = x;
564 y_old[id] = y;
565 }
566
567 x = (x_old[id] + x) / 2;
568 y = (y_old[id] + y) / 2;
569
570 if (x > x_old[id])
571 x_err = x - x_old[id];
572 else
573 x_err = x_old[id] - x;
574
575 if (y > y_old[id])
576 y_err = y - y_old[id];
577 else
578 y_err = y_old[id] - y;
579
580 if ((x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3)) {
581 x_new = x;
582 x_old[id] = x;
583 y_new = y;
584 y_old[id] = y;
585 } else {
586 if (x_err > 3) {
587 x_new = x;
588 x_old[id] = x;
589 } else {
590 x_new = x_old[id];
591 }
592
593 if (y_err > 3) {
594 y_new = y;
595 y_old[id] = y;
596 } else {
597 y_new = y_old[id];
598 }
599 }
600
601 if (id_sign[id] == 1) {
602 x_new = x_old[id];
603 y_new = y_old[id];
604 }
605 }
606
607 #endif
608
609 #ifdef HAVE_TOUCH_KEY
610 static void report_key(struct gsl_ts *ts, u16 x, u16 y)
611 {
612 u16 i = 0;
613
614 for (i = 0; i < MAX_KEY_NUM; i++) {
615 if ((gsl_key_data[i].x_min < x) && (x < gsl_key_data[i].x_max) && (gsl_key_data[i].y_min < y) && (y < gsl_key_data[i].y_max)) {
616 key = gsl_key_data[i].key;
617 input_report_key(ts->input, key, 1);
618 input_sync(ts->input);
619 key_state_flag = 1;
620 break;
621 }
622 }
623 }
624 #endif
625
626 static void report_data(struct gsl_ts *ts, u16 x, u16 y, u8 pressure, u8 id)
627 {
628 if (ts->flip_x == 1)
629 x = SCREEN_MAX_X - x;
630
631 if (ts->flip_y == 1)
632 y = SCREEN_MAX_Y - y;
633
634 if (ts->swap_xy == 1)
635 swap(x, y);
636
637 print_info("#####id=%d,x=%d,y=%d######\n", id, x, y);
638
639 if (x > SCREEN_MAX_X || y > SCREEN_MAX_Y) {
640 #ifdef HAVE_TOUCH_KEY
641 report_key(ts, x, y);
642 #endif
643 return;
644 }
645
646 #ifdef CONFIG_TCHIP_MACH_BACK_MUSIC
647 y = SCREEN_MAX_Y - y;
648 #endif
649
650 #ifdef REPORT_DATA_ANDROID_4_0
651 input_mt_slot(ts->input, id);
652 input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
653 input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
654 input_report_abs(ts->input, ABS_MT_POSITION_X, x);
655 input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
656 input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
657 #else
658 input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
659 input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
660 input_report_abs(ts->input, ABS_MT_POSITION_X, x);
661 input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
662 input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
663 input_mt_sync(ts->input);
664 #endif
665 }
666
667 static void gslX680_ts_worker(struct work_struct *work)
668 {
669 int rc, i;
670 u8 id, touches;
671 u16 x, y;
672
673 #ifdef GSL_NOID_VERSION
674 u32 tmp1;
675 u8 buf[4] = {0};
676 struct gsl_touch_info cinfo = {{0} };
677 #endif
678
679 struct gsl_ts *ts = container_of(work, struct gsl_ts, work);
680
681 #ifdef TPD_PROC_DEBUG
682 if (gsl_proc_flag == 1)
683 goto schedule;
684 #endif
685
686 rc = gsl_ts_read(ts->client, 0x80, ts->touch_data, ts->dd->data_size);
687 if (rc < 0) {
688 dev_err(&ts->client->dev, "read failed\n");
689 goto schedule;
690 }
691
692 touches = ts->touch_data[ts->dd->touch_index];
693 print_info("-----touches: %d -----\n", touches);
694 #ifdef GSL_NOID_VERSION
695 cinfo.finger_num = touches;
696 print_info("tp-gsl finger_num = %d\n", cinfo.finger_num);
697 for (i = 0; i < (touches < MAX_CONTACTS ? touches : MAX_CONTACTS); i++) {
698 cinfo.x[i] = join_bytes((ts->touch_data[ts->dd->x_index + 4 * i + 1] & 0xf),
699 ts->touch_data[ts->dd->x_index + 4 * i]);
700 cinfo.y[i] = join_bytes(ts->touch_data[ts->dd->y_index + 4 * i + 1],
701 ts->touch_data[ts->dd->y_index + 4 * i]);
702 print_info("tp-gsl x = %d y = %d\n", cinfo.x[i], cinfo.y[i]);
703 }
704 cinfo.finger_num = (ts->touch_data[3] << 24) | (ts->touch_data[2] << 16)
705 | (ts->touch_data[1] << 8) | (ts->touch_data[0]);
706 gsl_alg_id_main(&cinfo);
707 tmp1 = gsl_mask_tiaoping();
708 print_info("[tp-gsl] tmp1=%x\n", tmp1);
709 if (tmp1 > 0 && tmp1 < 0xffffffff) {
710 buf[0] = 0xa; buf[1] = 0; buf[2] = 0; buf[3] = 0;
711 gsl_ts_write(ts->client, 0xf0, buf, 4);
712 buf[0] = (u8)(tmp1 & 0xff);
713 buf[1] = (u8)((tmp1 >> 8) & 0xff);
714 buf[2] = (u8)((tmp1 >> 16) & 0xff);
715 buf[3] = (u8)((tmp1 >> 24) & 0xff);
716 print_info("tmp1=%08x,buf[0]=%02x,buf[1]=%02x,buf[2]=%02x,buf[3]=%02x\n",
717 tmp1, buf[0], buf[1], buf[2], buf[3]);
718 gsl_ts_write(ts->client, 0x8, buf, 4);
719 }
720 touches = cinfo.finger_num;
721 #endif
722
723 for (i = 1; i <= MAX_CONTACTS; i++) {
724 if (touches == 0)
725 id_sign[i] = 0;
726 id_state_flag[i] = 0;
727 }
728 for (i = 0; i < (touches > MAX_FINGERS ? MAX_FINGERS : touches); i++) {
729 #ifdef GSL_NOID_VERSION
730 id = cinfo.id[i];
731 x = cinfo.x[i];
732 y = cinfo.y[i];
733 #else
734 x = join_bytes((ts->touch_data[ts->dd->x_index + 4 * i + 1] & 0xf),
735 ts->touch_data[ts->dd->x_index + 4 * i]);
736 y = join_bytes(ts->touch_data[ts->dd->y_index + 4 * i + 1],
737 ts->touch_data[ts->dd->y_index + 4 * i]);
738 id = ts->touch_data[ts->dd->id_index + 4 * i] >> 4;
739 #endif
740
741 if (1 <= id && id <= MAX_CONTACTS) {
742 #ifdef FILTER_POINT
743 filter_point(x, y, id);
744 #else
745 record_point(x, y, id);
746 #endif
747 report_data(ts, x_new, y_new, 10, id);
748 id_state_flag[id] = 1;
749 }
750 }
751 for (i = 1; i <= MAX_CONTACTS; i++) {
752 if ((touches == 0) || ((id_state_old_flag[i] != 0) && (id_state_flag[i] == 0))) {
753 #ifdef REPORT_DATA_ANDROID_4_0
754 input_mt_slot(ts->input, i);
755 input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
756 input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
757 #endif
758 id_sign[i] = 0;
759 }
760 id_state_old_flag[i] = id_state_flag[i];
761 }
762 #ifndef REPORT_DATA_ANDROID_4_0
763 if (touches == 0) {
764 input_mt_sync(ts->input);
765 #ifdef HAVE_TOUCH_KEY
766 if (key_state_flag) {
767 input_report_key(ts->input, key, 0);
768 input_sync(ts->input);
769 key_state_flag = 0;
770 }
771 #endif
772 }
773 #endif
774 input_sync(ts->input);
775
776 schedule:
777 enable_irq(ts->irq);
778 }
779
780 extern void regulator_ctrl_vcc_tp(bool on);
781
782 static irqreturn_t gsl_ts_irq(int irq, void *dev_id)
783 {
784 struct gsl_ts *ts = dev_id;
785
786 print_info("========gslX680 Interrupt=========\n");
787
788 disable_irq_nosync(ts->irq);
789 if (!work_pending(&ts->work))
790 queue_work(ts->wq, &ts->work);
791
792 return IRQ_HANDLED;
793 }
794
795 static int gslX680_ts_init(struct i2c_client *client, struct gsl_ts *ts)
796 {
797 struct input_dev *input_device;
798 int rc = 0;
799
800 ts->dd = &devices[ts->device_id];
801
802 if (ts->device_id == 0) {
803 ts->dd->data_size = MAX_FINGERS * ts->dd->touch_bytes + ts->dd->touch_meta_data;
804 ts->dd->touch_index = 0;
805 }
806
807 ts->touch_data = devm_kzalloc(&client->dev, ts->dd->data_size, GFP_KERNEL);
808 if (!ts->touch_data) {
809 pr_err("%s: Unable to allocate memory\n", __func__);
810 return -ENOMEM;
811 }
812
813 input_device = input_allocate_device();
814 if (!input_device) {
815 rc = -ENOMEM;
816 goto error_alloc_dev;
817 }
818
819 ts->input = input_device;
820 input_device->name = GSLX680_I2C_NAME;
821 input_device->id.bustype = BUS_I2C;
822 input_device->dev.parent = &client->dev;
823 input_set_drvdata(input_device, ts);
824
825 #ifdef REPORT_DATA_ANDROID_4_0
826 __set_bit(EV_ABS, input_device->evbit);
827 __set_bit(EV_KEY, input_device->evbit);
828 __set_bit(EV_REP, input_device->evbit);
829 __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
830 input_mt_init_slots(input_device, (MAX_CONTACTS + 1), 0);
831 #else
832 input_set_abs_params(input_device, ABS_MT_TRACKING_ID, 0, (MAX_CONTACTS + 1), 0, 0);
833 set_bit(EV_ABS, input_device->evbit);
834 set_bit(EV_KEY, input_device->evbit);
835 __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
836 input_device->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
837 #endif
838
839 #ifdef HAVE_TOUCH_KEY
840 input_device->evbit[0] = BIT_MASK(EV_KEY);
841 for (i = 0; i < MAX_KEY_NUM; i++)
842 set_bit(key_array[i], input_device->keybit);
843 #endif
844
845 set_bit(ABS_MT_POSITION_X, input_device->absbit);
846 set_bit(ABS_MT_POSITION_Y, input_device->absbit);
847 set_bit(ABS_MT_TOUCH_MAJOR, input_device->absbit);
848 set_bit(ABS_MT_WIDTH_MAJOR, input_device->absbit);
849
850 input_set_abs_params(input_device, ABS_MT_POSITION_X, 0, SCREEN_MAX_X, 0, 0);
851 input_set_abs_params(input_device, ABS_MT_POSITION_Y, 0, SCREEN_MAX_Y, 0, 0);
852
853 input_set_abs_params(input_device, ABS_MT_TOUCH_MAJOR, 0, PRESS_MAX, 0, 0);
854 input_set_abs_params(input_device, ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
855
856 client->irq = gts->irq_pin;
857 ts->irq = client->irq;
858 ts->wq = create_singlethread_workqueue("kworkqueue_ts");
859 if (!ts->wq) {
860 dev_err(&client->dev, "Could not create workqueue\n");
861 goto error_wq_create;
862 }
863 flush_workqueue(ts->wq);
864
865 INIT_WORK(&ts->work, gslX680_ts_worker);
866
867 rc = input_register_device(input_device);
868 if (rc)
869 goto error_unreg_device;
870
871 return 0;
872
873 error_unreg_device:
874 destroy_workqueue(ts->wq);
875 error_wq_create:
876 input_free_device(input_device);
877 error_alloc_dev:
878 devm_kfree(&client->dev, ts->touch_data);
879
880 return rc;
881 }
882
883 static int rk_ts_early_suspend(struct tp_device *tp_d)
884 {
885 struct gsl_ts *ts = container_of(tp_d, struct gsl_ts, tp);
886 int i;
887
888 disable_irq_nosync(ts->irq);
889 gslX680_shutdown_low();
890
891 #ifdef SLEEP_CLEAR_POINT
892 msleep(10);
893 #ifdef REPORT_DATA_ANDROID_4_0
894 for (i = 1; i <= MAX_CONTACTS; i++) {
895 input_mt_slot(ts->input, i);
896 input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
897 input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
898 }
899 #else
900 input_mt_sync(ts->input);
901 #endif
902 input_sync(ts->input);
903 msleep(10);
904 report_data(ts, 1, 1, 10, 1);
905 input_sync(ts->input);
906 #endif
907
908 return 0;
909 }
910
911 static int rk_ts_early_resume(struct tp_device *tp_d)
912 {
913 struct gsl_ts *ts = container_of(tp_d, struct gsl_ts, tp);
914 int i;
915
916 gslX680_shutdown_high();
917 msleep(20);
918 reset_chip(ts->client);
919 startup_chip(ts->client);
920 check_mem_data(ts->client);
921
922 #ifdef SLEEP_CLEAR_POINT
923 #ifdef REPORT_DATA_ANDROID_4_0
924 for (i = 1; i <= MAX_CONTACTS; i++) {
925 input_mt_slot(ts->input, i);
926 input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
927 input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
928 }
929 #else
930 input_mt_sync(ts->input);
931 #endif
932 input_sync(ts->input);
933 #endif
934 enable_irq(ts->irq);
935
936 return 0;
937 }
938
939 #ifdef CONFIG_HAS_EARLYSUSPEND
940 static void gsl_ts_early_suspend(struct early_suspend *h)
941 {
942 struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
943
944 gsl_ts_suspend(&ts->client->dev);
945 }
946
947 static void gsl_ts_late_resume(struct early_suspend *h)
948 {
949 struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
950
951 gsl_ts_resume(&ts->client->dev);
952 }
953 #endif
954
955 static int gsl_ts_probe(struct i2c_client *client,
956 const struct i2c_device_id *id)
957 {
958 struct gsl_ts *ts;
959 int rc;
960 int timer = 3;
961 int ret = 0;
962 char buffer = 0;
963 struct device_node *np = client->dev.of_node;
964 enum of_gpio_flags rst_flags;
965 unsigned long irq_flags;
966
967 while (timer > 0) {
968 ret = i2c_master_recv(client, &buffer, 1);
969 if (ret >= 0)
970 break;
971 timer--;
972 msleep(100);
973 }
974
975 if (ret < 0)
976 return ret;
977
978 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
979 dev_err(&client->dev, "I2C functionality not supported\n");
980 return -ENODEV;
981 }
982
983 ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
984 if (!ts)
985 return -ENOMEM;
986
987 ts->client = client;
988 i2c_set_clientdata(client, ts);
989 ts->device_id = 0;
990 ts->tp.tp_resume = rk_ts_early_resume;
991 ts->tp.tp_suspend = rk_ts_early_suspend;
992 tp_register_fb(&ts->tp);
993
994 ts->irq_pin = of_get_named_gpio_flags(np, "touch-gpio", 0, (enum of_gpio_flags *)&irq_flags);
995 ts->rst_pin = of_get_named_gpio_flags(np, "reset-gpio", 0, &rst_flags);
996 if (of_property_read_u32(np, "flip-x", &ts->flip_x) < 0)
997 ts->flip_x = 0;
998
999 if (of_property_read_u32(np, "flip-y", &ts->flip_y) < 0)
1000 ts->flip_y = 0;
1001
1002 if (of_property_read_u32(np, "swap-xy", &ts->swap_xy) < 0)
1003 ts->swap_xy = 0;
1004
1005 if (gpio_is_valid(ts->rst_pin)) {
1006 ts->rst_val = (rst_flags & OF_GPIO_ACTIVE_LOW) ? 0 : 1;
1007 ret = devm_gpio_request_one(&client->dev, ts->rst_pin, (rst_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, "goodix reset pin");
1008 if (ret != 0) {
1009 dev_err(&client->dev, "goodix gpio_request error\n");
1010 return -EIO;
1011 }
1012 gpio_direction_output(ts->rst_pin, 0);
1013 gpio_set_value(ts->rst_pin, GPIO_HIGH);
1014 msleep(20);
1015 } else {
1016 dev_info(&client->dev, "reset pin invalid\n");
1017 }
1018 gts = ts;
1019
1020 rc = gslX680_ts_init(client, ts);
1021 if (rc < 0) {
1022 dev_err(&client->dev, "GSLX680 init failed\n");
1023 goto error_mutex_destroy;
1024 }
1025
1026 gsl_client = client;
1027
1028 #ifdef GSLX680_COMPATIBLE
1029 judge_chip_type(ts->client);
1030 #endif
1031 init_chip(ts->client);
1032 check_mem_data(ts->client);
1033
1034 ts->irq = gpio_to_irq(ts->irq_pin); /*If not defined in client*/
1035 if (ts->irq) {
1036 rc = devm_request_threaded_irq(&client->dev, ts->irq, NULL,
1037 gsl_ts_irq, irq_flags | IRQF_ONESHOT, client->name, ts);
1038 if (rc != 0) {
1039 print_info("Cannot allocate ts INT!ERRNO:%d\n", ret);
1040 goto error_req_irq_fail;
1041 }
1042 }
1043
1044 #ifdef CONFIG_HAS_EARLYSUSPEND
1045 ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
1046 ts->early_suspend.suspend = gsl_ts_early_suspend;
1047 ts->early_suspend.resume = gsl_ts_late_resume;
1048 register_early_suspend(&ts->early_suspend);
1049 #endif
1050
1051 #ifdef TPD_PROC_DEBUG
1052 gsl_config_proc = create_proc_entry(GSL_CONFIG_PROC_FILE, 0666, NULL);
1053 if (!gsl_config_proc) {
1054 print_info("create_proc_entry %s failed\n", GSL_CONFIG_PROC_FILE);
1055 } else {
1056 gsl_config_proc->read_proc = gsl_config_read_proc;
1057 gsl_config_proc->write_proc = gsl_config_write_proc;
1058 }
1059 gsl_proc_flag = 0;
1060 #endif
1061 return 0;
1062
1063 error_req_irq_fail:
1064 free_irq(ts->irq, ts);
1065
1066 error_mutex_destroy:
1067 input_free_device(ts->input);
1068 devm_kfree(&client->dev, ts);
1069 return rc;
1070 }
1071
1072 static int gsl_ts_remove(struct i2c_client *client)
1073 {
1074 struct gsl_ts *ts = i2c_get_clientdata(client);
1075
1076 #ifdef CONFIG_HAS_EARLYSUSPEND
1077 unregister_early_suspend(&ts->early_suspend);
1078 #endif
1079 device_init_wakeup(&client->dev, 0);
1080 cancel_work_sync(&ts->work);
1081 free_irq(ts->irq, ts);
1082 destroy_workqueue(ts->wq);
1083 input_unregister_device(ts->input);
1084
1085 devm_kfree(&client->dev, ts->touch_data);
1086 devm_kfree(&client->dev, ts);
1087
1088 return 0;
1089 }
1090
1091 static const struct i2c_device_id gsl_ts_id[] = {
1092 {GSLX680_I2C_NAME, 0},
1093 {}
1094 };
1095 MODULE_DEVICE_TABLE(i2c, gsl_ts_id);
1096
1097 static struct of_device_id goodix_ts_dt_ids[] = {
1098 { .compatible = "gslX680" },
1099 { }
1100 };
1101
1102 static struct i2c_driver gsl_ts_driver = {
1103 .driver = {
1104 .name = GSLX680_I2C_NAME,
1105 .owner = THIS_MODULE,
1106 .of_match_table = of_match_ptr(goodix_ts_dt_ids),
1107 },
1108 .probe = gsl_ts_probe,
1109 .remove = gsl_ts_remove,
1110 .id_table = gsl_ts_id,
1111 };
1112
1113 static int __init gsl_ts_init(void)
1114 {
1115 int ret;
1116
1117 ret = i2c_add_driver(&gsl_ts_driver);
1118 return ret;
1119 }
1120
1121 static void __exit gsl_ts_exit(void)
1122 {
1123 i2c_del_driver(&gsl_ts_driver);
1124 }
1125
1126 module_init(gsl_ts_init);
1127 module_exit(gsl_ts_exit);
1128
1129 MODULE_LICENSE("GPL");
1130 MODULE_DESCRIPTION("GSLX680 touchscreen controller driver");
1131