1 /* drivers/input/touchscreen/gt1x_generic.c
2 *
3 * 2010 - 2014 Goodix Technology.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be a reference
11 * to you, when you are integrating the GOODiX's CTP IC into your system,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * Version: 1.4
17 * Release Date: 2015/07/10
18 */
19
20 /*#include "gt1x_tpd_custom.h"*/
21 #include "gt1x.h"
22 #include "gt1x_generic.h"
23 #include "gt1x_cfg.h"
24 #if GTP_PROXIMITY && defined(PLATFORM_MTK)
25 #include <linux/hwmsensor.h>
26 #include <linux/hwmsen_dev.h>
27 #include <linux/sensors_io.h>
28 #endif
29 #include <linux/input/mt.h>
30
31 /*******************GLOBAL VARIABLE*********************/
32 struct i2c_client *gt1x_i2c_client;
33 static struct workqueue_struct *gt1x_workqueue;
34
35 u8 gt1x_config[GTP_CONFIG_MAX_LENGTH] = { 0 };
36 u32 gt1x_cfg_length = GTP_CONFIG_MAX_LENGTH;
37
38 CHIP_TYPE_T gt1x_chip_type = CHIP_TYPE_NONE;
39 struct gt1x_version_info gt1x_version = {
40 .product_id = {0},
41 .patch_id = 0,
42 .mask_id = 0,
43 .sensor_id = 0,
44 .match_opt = 0
45 };
46
47 #ifndef TPD_HAVE_BUTTON
48 #define TPD_HAVE_BUTTON 0
49 #endif
50
51 #if GTP_HAVE_TOUCH_KEY
52 const u16 gt1x_touch_key_array[] = GTP_KEY_TAB;
53 #elif TPD_HAVE_BUTTON
54 struct key_map_t {
55 int x;
56 int y;
57 };
58 static struct key_map_t tpd_virtual_key_array[] = TPD_KEY_MAP_ARRAY;
59 #endif
60
61 #if GTP_WITH_STYLUS && GTP_HAVE_STYLUS_KEY
62 static const u16 gt1x_stylus_key_array[] = GTP_STYLUS_KEY_TAB;
63 #endif
64
65 #define GOODIX_SYSFS_DIR "goodix"
66 static struct kobject *sysfs_rootdir;
67
68 volatile int gt1x_rawdiff_mode;
69 u8 gt1x_wakeup_level;
70 u8 gt1x_init_failed;
71 u8 gt1x_int_type;
72 u32 gt1x_abs_x_max;
73 u32 gt1x_abs_y_max;
74 int gt1x_halt;
75 bool gt1x_ics_slot_report;
76
77 #if GTP_DEBUG_NODE
78 static ssize_t gt1x_debug_read_proc(struct file *, char __user *, size_t, loff_t *);
79 static ssize_t gt1x_debug_write_proc(struct file *, const char __user *, size_t, loff_t *);
80
81 static struct proc_dir_entry *gt1x_debug_proc_entry;
82 static const struct file_operations gt1x_debug_fops = {
83 .owner = THIS_MODULE,
84 .read = gt1x_debug_read_proc,
85 .write = gt1x_debug_write_proc,
86 };
87
gt1x_init_debug_node(void)88 static s32 gt1x_init_debug_node(void)
89 {
90 gt1x_debug_proc_entry = proc_create(GT1X_DEBUG_PROC_FILE, 0660, NULL, >1x_debug_fops);
91 if (gt1x_debug_proc_entry == NULL) {
92 GTP_ERROR("Create proc entry /proc/%s FAILED!", GT1X_DEBUG_PROC_FILE);
93 return -1;
94 }
95 GTP_INFO("Created proc entry /proc/%s.", GT1X_DEBUG_PROC_FILE);
96 return 0;
97 }
98
gt1x_deinit_debug_node(void)99 static void gt1x_deinit_debug_node(void)
100 {
101 if (gt1x_debug_proc_entry != NULL) {
102 remove_proc_entry(GT1X_DEBUG_PROC_FILE, NULL);
103 }
104 }
105
gt1x_debug_read_proc(struct file * file,char __user * page,size_t size,loff_t * ppos)106 static ssize_t gt1x_debug_read_proc(struct file *file, char __user *page, size_t size, loff_t *ppos)
107 {
108 char *ptr = page;
109 char temp_data[GTP_CONFIG_MAX_LENGTH] = { 0 };
110 int i;
111
112 if (*ppos) {
113 return 0;
114 }
115
116 ptr += sprintf(ptr, "==== GT1X default config setting in driver====\n");
117
118 for (i = 0; i < GTP_CONFIG_MAX_LENGTH; i++) {
119 ptr += sprintf(ptr, "0x%02X,", gt1x_config[i]);
120 if (i % 10 == 9)
121 ptr += sprintf(ptr, "\n");
122 }
123
124 ptr += sprintf(ptr, "\n");
125
126 ptr += sprintf(ptr, "==== GT1X config read from chip====\n");
127 i = gt1x_i2c_read(GTP_REG_CONFIG_DATA, temp_data, GTP_CONFIG_MAX_LENGTH);
128 GTP_INFO("I2C TRANSFER: %d", i);
129 for (i = 0; i < GTP_CONFIG_MAX_LENGTH; i++) {
130 ptr += sprintf(ptr, "0x%02X,", temp_data[i]);
131
132 if (i % 10 == 9)
133 ptr += sprintf(ptr, "\n");
134 }
135
136 ptr += sprintf(ptr, "\n");
137 /* Touch PID & VID */
138 ptr += sprintf(ptr, "==== GT1X Version Info ====\n");
139
140 gt1x_i2c_read(GTP_REG_VERSION, temp_data, 12);
141 ptr += sprintf(ptr, "ProductID: GT%c%c%c%c\n", temp_data[0], temp_data[1], temp_data[2], temp_data[3]);
142 ptr += sprintf(ptr, "PatchID: %02X%02X\n", temp_data[4], temp_data[5]);
143 ptr += sprintf(ptr, "MaskID: %02X%02X\n", temp_data[7], temp_data[8]);
144 ptr += sprintf(ptr, "SensorID: %02X\n", temp_data[10] & 0x0F);
145
146 *ppos += ptr - page;
147 return (ptr - page);
148 }
149
gt1x_debug_write_proc(struct file * file,const char * buffer,size_t count,loff_t * ppos)150 static ssize_t gt1x_debug_write_proc(struct file *file, const char *buffer, size_t count, loff_t *ppos)
151 {
152 s32 ret = 0;
153 u8 buf[GTP_CONFIG_MAX_LENGTH] = { 0 };
154 char mode_str[50] = { 0 };
155 int mode;
156 int cfg_len;
157 char arg1[50] = { 0 };
158 u8 temp_config[GTP_CONFIG_MAX_LENGTH] = { 0 };
159
160 GTP_DEBUG("write count %ld\n", (unsigned long)count);
161
162 if (count > GTP_CONFIG_MAX_LENGTH) {
163 GTP_ERROR("Too much data, buffer size: %d, data:%ld", GTP_CONFIG_MAX_LENGTH, (unsigned long)count);
164 return -EFAULT;
165 }
166
167 if (copy_from_user(buf, buffer, count)) {
168 GTP_ERROR("copy from user fail!");
169 return -EFAULT;
170 }
171 /*send config*/
172 if (count == gt1x_cfg_length) {
173 memcpy(gt1x_config, buf, count);
174 ret = gt1x_send_cfg(gt1x_config, gt1x_cfg_length);
175 if (ret < 0) {
176 GTP_ERROR("send gt1x_config failed.");
177 return -EFAULT;
178 }
179 gt1x_abs_x_max = (gt1x_config[RESOLUTION_LOC + 1] << 8) + gt1x_config[RESOLUTION_LOC];
180 gt1x_abs_y_max = (gt1x_config[RESOLUTION_LOC + 3] << 8) + gt1x_config[RESOLUTION_LOC + 2];
181
182 return count;
183 }
184
185 sscanf(buf, "%s %d", (char *)&mode_str, &mode);
186
187 /*force clear gt1x_config*/
188 if (strcmp(mode_str, "clear_config") == 0) {
189 GTP_INFO("Force clear gt1x_config");
190 gt1x_send_cmd(GTP_CMD_CLEAR_CFG, 0);
191 return count;
192 }
193 if (strcmp(mode_str, "init") == 0) {
194 GTP_INFO("Init panel");
195 gt1x_init_panel();
196 return count;
197 }
198 if (strcmp(mode_str, "chip") == 0) {
199 GTP_INFO("Get chip type:");
200 gt1x_get_chip_type();
201 return count;
202 }
203 if (strcmp(mode_str, "int") == 0) {
204 if (mode == 0) {
205 GTP_INFO("Disable irq.");
206 gt1x_irq_disable();
207 } else {
208 GTP_INFO("Enable irq.");
209 gt1x_irq_enable();
210 }
211 return count;
212 }
213
214 if (strcmp(mode_str, "poweron") == 0) {
215 gt1x_power_switch(1);
216 return count;
217 }
218
219 if (strcmp(mode_str, "poweroff") == 0) {
220 gt1x_power_switch(0);
221 return count;
222 }
223
224 if (strcmp(mode_str, "version") == 0) {
225 gt1x_read_version(NULL);
226 return count;
227 }
228
229 if (strcmp(mode_str, "reset") == 0) {
230 gt1x_irq_disable();
231 gt1x_reset_guitar();
232 gt1x_irq_enable();
233 return count;
234 }
235 #if GTP_CHARGER_SWITCH
236 if (strcmp(mode_str, "charger") == 0) {
237 gt1x_charger_config(mode);
238 return count;
239 }
240 #endif
241 sscanf(buf, "%s %s", (char *)&mode_str, (char *)&arg1);
242 if (strcmp(mode_str, "update") == 0) {
243 gt1x_update_firmware(arg1);
244 return count;
245 }
246 #if 0 //close for GKI
247 if (strcmp(mode_str, "sendconfig") == 0) {
248 cfg_len = gt1x_parse_config(arg1, temp_config);
249 if (cfg_len < 0) {
250 return -1;
251 }
252 gt1x_send_cfg(temp_config, gt1x_cfg_length);
253 return count;
254 }
255 #endif
256 if (strcmp(mode_str, "debug_gesture") == 0) {
257 #if GTP_GESTURE_WAKEUP
258 gt1x_gesture_debug(!!mode);
259 #endif
260 }
261
262 if (strcmp(mode_str, "force_update") == 0) {
263 update_info.force_update = !!mode;
264 }
265 return gt1x_debug_proc(buf, count);
266 }
267 #endif
268
ascii2hex(u8 a)269 static u8 __maybe_unused ascii2hex(u8 a)
270 {
271 s8 value = 0;
272 if (a >= '0' && a <= '9') {
273 value = a - '0';
274 } else if (a >= 'A' && a <= 'F') {
275 value = a - 'A' + 0x0A;
276 } else if (a >= 'a' && a <= 'f') {
277 value = a - 'a' + 0x0A;
278 } else {
279 value = 0xff;
280 }
281 return value;
282 }
283
284 #if 0 //close for GKI
285 int gt1x_parse_config(char *filename, u8 *config)
286 {
287 mm_segment_t old_fs;
288 struct file *fp = NULL;
289 u8 *buf;
290 int i;
291 int len;
292 int cur_len = -1;
293 u8 high, low;
294
295 old_fs = get_fs();
296 set_fs(KERNEL_DS);
297
298 fp = filp_open(filename, O_RDONLY, 0);
299 if (IS_ERR(fp)) {
300 GTP_ERROR("Open config file error!(file: %s)", filename);
301 goto parse_cfg_fail1;
302 }
303 len = fp->f_op->llseek(fp, 0, SEEK_END);
304 if (len > GTP_CONFIG_MAX_LENGTH * 6 || len < GTP_CONFIG_MAX_LENGTH) {
305 GTP_ERROR("Config is invalid!(length: %d)", len);
306 goto parse_cfg_fail2;
307 }
308 buf = kzalloc(len, GFP_KERNEL);
309 if (buf == NULL) {
310 GTP_ERROR("Allocate memory failed!(size: %d)", len);
311 goto parse_cfg_fail2;
312 }
313 fp->f_op->llseek(fp, 0, SEEK_SET);
314 if (fp->f_op->read(fp, (char *)buf, len, &fp->f_pos) != len) {
315 GTP_ERROR("Read %d bytes from file failed!", len);
316 }
317
318 GTP_INFO("Parse config file: %s (%d bytes)", filename, len);
319
320 for (i = 0, cur_len = 0; i < len && cur_len < GTP_CONFIG_MAX_LENGTH;) {
321 if (buf[i] == ' ' || buf[i] == '\r' || buf[i] == '\n' || buf[i] == ',') {
322 i++;
323 continue;
324 }
325 if (buf[i] == '0' && (buf[i + 1] == 'x' || buf[i + 1] == 'X')) {
326
327 high = ascii2hex(buf[i + 2]);
328 low = ascii2hex(buf[i + 3]);
329
330 if (high != 0xFF && low != 0xFF) {
331 config[cur_len++] = (high << 4) + low;
332 i += 4;
333 continue;
334 }
335 }
336 GTP_ERROR("Illegal config file!");
337 cur_len = -1;
338 break;
339 }
340
341 if (cur_len < GTP_CONFIG_MIN_LENGTH || config[cur_len - 1] != 0x01) {
342 cur_len = -1;
343 } else {
344 for (i = 0; i < cur_len; i++) {
345 if (i % 10 == 0) {
346 printk("\n<<GTP-DBG>>:");
347 }
348 printk("0x%02x,", config[i]);
349 }
350 printk("\n");
351 }
352
353 kfree(buf);
354 parse_cfg_fail2:
355 filp_close(fp, NULL);
356 parse_cfg_fail1:
357 set_fs(old_fs);
358
359 return cur_len;
360 }
361 #endif
362
_do_i2c_read(struct i2c_msg * msgs,u16 addr,u8 * buffer,s32 len)363 s32 _do_i2c_read(struct i2c_msg *msgs, u16 addr, u8 *buffer, s32 len)
364 {
365 s32 ret = -1;
366 s32 pos = 0;
367 s32 data_length = len;
368 s32 transfer_length = 0;
369 u8 *data = NULL;
370 u16 address = addr;
371
372 data = kmalloc(IIC_MAX_TRANSFER_SIZE < (len + GTP_ADDR_LENGTH) ? IIC_MAX_TRANSFER_SIZE : (len + GTP_ADDR_LENGTH), GFP_KERNEL);
373 if (data == NULL) {
374 return ERROR_MEM;
375 }
376 msgs[1].buf = data;
377
378 while (pos != data_length) {
379 if ((data_length - pos) > IIC_MAX_TRANSFER_SIZE) {
380 transfer_length = IIC_MAX_TRANSFER_SIZE;
381 } else {
382 transfer_length = data_length - pos;
383 }
384 msgs[0].buf[0] = (address >> 8) & 0xFF;
385 msgs[0].buf[1] = address & 0xFF;
386 msgs[1].len = transfer_length;
387
388 ret = i2c_transfer(gt1x_i2c_client->adapter, msgs, 2);
389 if (ret != 2) {
390 GTP_ERROR("I2c Transfer error! (%d)", ret);
391 kfree(data);
392 return ERROR_IIC;
393 }
394 memcpy(&buffer[pos], msgs[1].buf, transfer_length);
395 pos += transfer_length;
396 address += transfer_length;
397 }
398
399 kfree(data);
400 return 0;
401 }
402
_do_i2c_write(struct i2c_msg * msg,u16 addr,u8 * buffer,s32 len)403 s32 _do_i2c_write(struct i2c_msg *msg, u16 addr, u8 *buffer, s32 len)
404 {
405 s32 ret = -1;
406 s32 pos = 0;
407 s32 data_length = len;
408 s32 transfer_length = 0;
409 u8 *data = NULL;
410 u16 address = addr;
411
412 data = kmalloc(IIC_MAX_TRANSFER_SIZE < (len + GTP_ADDR_LENGTH) ? IIC_MAX_TRANSFER_SIZE : (len + GTP_ADDR_LENGTH), GFP_KERNEL);
413 if (data == NULL) {
414 return ERROR_MEM;
415 }
416 msg->buf = data;
417
418 while (pos != data_length) {
419 if ((data_length - pos) > (IIC_MAX_TRANSFER_SIZE - GTP_ADDR_LENGTH)) {
420 transfer_length = IIC_MAX_TRANSFER_SIZE - GTP_ADDR_LENGTH;
421 } else {
422 transfer_length = data_length - pos;
423 }
424
425 msg->buf[0] = (address >> 8) & 0xFF;
426 msg->buf[1] = address & 0xFF;
427 msg->len = transfer_length + GTP_ADDR_LENGTH;
428 memcpy(&msg->buf[GTP_ADDR_LENGTH], &buffer[pos], transfer_length);
429
430 ret = i2c_transfer(gt1x_i2c_client->adapter, msg, 1);
431 if (ret != 1) {
432 GTP_ERROR("I2c transfer error! (%d)", ret);
433 kfree(data);
434 return ERROR_IIC;
435 }
436 pos += transfer_length;
437 address += transfer_length;
438 }
439
440 kfree(data);
441 return 0;
442 }
443
444 #if !GTP_ESD_PROTECT
gt1x_i2c_test(void)445 static s32 gt1x_i2c_test(void)
446 {
447 u8 retry = 0;
448 s32 ret = -1;
449 u32 hw_info = 0;
450 GTP_DEBUG_FUNC();
451
452 while (retry++ < 3) {
453 ret = gt1x_i2c_read(GTP_REG_HW_INFO, (u8 *) &hw_info, sizeof(hw_info));
454 if (!ret) {
455 GTP_INFO("Hardware Info:%08X", hw_info);
456 return ret;
457 }
458
459 usleep_range(10000, 11000);
460 GTP_ERROR("Hardware Info:%08X", hw_info);
461 GTP_ERROR("I2c failed%d.", retry);
462 }
463
464 return ERROR_RETRY;
465 }
466 #endif
467
468 /**
469 * gt1x_i2c_read_dbl_check - read twice and double check
470 * @addr: register address
471 * @buffer: data buffer
472 * @len: bytes to read
473 * Return <0: i2c error, 0: ok, 1:fail
474 */
gt1x_i2c_read_dbl_check(u16 addr,u8 * buffer,s32 len)475 s32 gt1x_i2c_read_dbl_check(u16 addr, u8 *buffer, s32 len)
476 {
477 u8 buf[16] = { 0 };
478 u8 confirm_buf[16] = { 0 };
479 int ret;
480
481 if (len > 16) {
482 GTP_ERROR("i2c_read_dbl_check length %d is too long, exceed %zu", len, sizeof(buf));
483 return ERROR;
484 }
485
486 memset(buf, 0xAA, sizeof(buf));
487 ret = gt1x_i2c_read(addr, buf, len);
488 if (ret < 0) {
489 return ret;
490 }
491
492 usleep_range(5000, 6000);
493 memset(confirm_buf, 0, sizeof(confirm_buf));
494 ret = gt1x_i2c_read(addr, confirm_buf, len);
495 if (ret < 0) {
496 return ret;
497 }
498
499 if (!memcmp(buf, confirm_buf, len)) {
500 memcpy(buffer, confirm_buf, len);
501 return 0;
502 }
503 GTP_ERROR("i2c read 0x%04X, %d bytes, double check failed!", addr, len);
504 return 1;
505 }
506
507 /**
508 * gt1x_send_cfg - Send gt1x_config Function.
509 * @config: pointer of the configuration array.
510 * @cfg_len: length of configuration array.
511 * Return 0--success,non-0--fail.
512 */
gt1x_send_cfg(u8 * config,int cfg_len)513 s32 gt1x_send_cfg(u8 *config, int cfg_len)
514 {
515 #if GTP_DRIVER_SEND_CFG
516 static DEFINE_MUTEX(mutex_cfg);
517 int i;
518 s32 ret = 0;
519 s32 retry = 0;
520 u16 checksum = 0;
521
522 if (update_info.status) {
523 GTP_DEBUG("Ignore cfg during fw update.");
524 return -1;
525 }
526 mutex_lock(&mutex_cfg);
527 GTP_DEBUG("Driver send config, length:%d", cfg_len);
528 for (i = 0; i < cfg_len - 3; i += 2) {
529 checksum += (config[i] << 8) + config[i + 1];
530 }
531 if (!checksum) {
532 GTP_ERROR("Invalid config, all of the bytes is zero!");
533 mutex_unlock(&mutex_cfg);
534 return -1;
535 }
536 checksum = 0 - checksum;
537 GTP_DEBUG("Config checksum: 0x%04X", checksum);
538 config[cfg_len - 3] = (checksum >> 8) & 0xFF;
539 config[cfg_len - 2] = checksum & 0xFF;
540 config[cfg_len - 1] = 0x01;
541
542 while (retry++ < 5) {
543 ret = gt1x_i2c_write(GTP_REG_CONFIG_DATA, config, cfg_len);
544 if (!ret) {
545 msleep(200); /* at least 200ms, wait for storing config into flash. */
546 mutex_unlock(&mutex_cfg);
547 GTP_DEBUG("Send config successfully!");
548 return 0;
549 }
550 }
551 GTP_ERROR("Send config failed!");
552 mutex_unlock(&mutex_cfg);
553 return ret;
554 #endif
555 return 0;
556 }
557
558 /**
559 * gt1x_init_panel - Prepare config data for touch ic, don't call this function
560 * after initialization.
561 *
562 * Return 0--success,<0 --fail.
563 */
gt1x_init_panel(void)564 s32 gt1x_init_panel(void)
565 {
566 s32 ret = 0;
567 u8 cfg_len = 0;
568
569 #if GTP_DRIVER_SEND_CFG
570 u8 sensor_id = 0;
571
572 const u8 cfg_grp0[] = GTP_CFG_GROUP0;
573 const u8 cfg_grp1[] = GTP_CFG_GROUP1;
574 const u8 cfg_grp2[] = GTP_CFG_GROUP2;
575 const u8 cfg_grp3[] = GTP_CFG_GROUP3;
576 const u8 cfg_grp4[] = GTP_CFG_GROUP4;
577 const u8 cfg_grp5[] = GTP_CFG_GROUP5;
578 const u8 *cfgs[] = {
579 cfg_grp0, cfg_grp1, cfg_grp2,
580 cfg_grp3, cfg_grp4, cfg_grp5
581 };
582 u8 cfg_lens[] = {
583 CFG_GROUP_LEN(cfg_grp0),
584 CFG_GROUP_LEN(cfg_grp1),
585 CFG_GROUP_LEN(cfg_grp2),
586 CFG_GROUP_LEN(cfg_grp3),
587 CFG_GROUP_LEN(cfg_grp4),
588 CFG_GROUP_LEN(cfg_grp5)
589 };
590
591 if (gt1x_gt5688) {
592 cfgs[0] = gtp_dat_5688;
593 cfg_lens[0] = CFG_GROUP_LEN(gtp_dat_5688);
594 }
595
596 GTP_DEBUG("Config groups length:%d,%d,%d,%d,%d,%d", cfg_lens[0], cfg_lens[1], cfg_lens[2], cfg_lens[3], cfg_lens[4], cfg_lens[5]);
597
598 sensor_id = gt1x_version.sensor_id;
599 if (sensor_id >= 6 || cfg_lens[sensor_id] < GTP_CONFIG_MIN_LENGTH || cfg_lens[sensor_id] > GTP_CONFIG_MAX_LENGTH) {
600 sensor_id = 0;
601 gt1x_version.sensor_id = 0;
602 }
603
604 cfg_len = cfg_lens[sensor_id];
605
606 GTP_INFO("Config group%d used, length:%d", sensor_id, cfg_len);
607
608 if (cfg_len < GTP_CONFIG_MIN_LENGTH || cfg_len > GTP_CONFIG_MAX_LENGTH) {
609 GTP_ERROR("Config group%d is INVALID! You need to check you header file CFG_GROUP section!", sensor_id + 1);
610 return -1;
611 }
612
613 memset(gt1x_config, 0, sizeof(gt1x_config));
614 memcpy(gt1x_config, cfgs[sensor_id], cfg_len);
615
616 /* clear the flag, avoid failure when send the_config of driver. */
617 gt1x_config[0] &= 0x7F;
618
619 #if GTP_CUSTOM_CFG
620 gt1x_config[RESOLUTION_LOC] = (u8) GTP_MAX_WIDTH;
621 gt1x_config[RESOLUTION_LOC + 1] = (u8) (GTP_MAX_WIDTH >> 8);
622 gt1x_config[RESOLUTION_LOC + 2] = (u8) GTP_MAX_HEIGHT;
623 gt1x_config[RESOLUTION_LOC + 3] = (u8) (GTP_MAX_HEIGHT >> 8);
624
625 if (GTP_INT_TRIGGER == 0) { /* RISING */
626 gt1x_config[TRIGGER_LOC] &= 0xfe;
627 } else if (GTP_INT_TRIGGER == 1) { /* FALLING */
628 gt1x_config[TRIGGER_LOC] |= 0x01;
629 }
630 set_reg_bit(gt1x_config[MODULE_SWITCH3_LOC], 5, !gt1x_wakeup_level);
631 #endif /* END GTP_CUSTOM_CFG */
632
633 #else /* DRIVER NOT SEND CONFIG */
634 cfg_len = GTP_CONFIG_MAX_LENGTH;
635 ret = gt1x_i2c_read(GTP_REG_CONFIG_DATA, gt1x_config, cfg_len);
636 if (ret < 0) {
637 return ret;
638 }
639 #endif /* END GTP_DRIVER_SEND_CFG */
640
641 GTP_DEBUG_FUNC();
642 /* match resolution when gt1x_abs_x_max & gt1x_abs_y_max have been set already */
643 if ((gt1x_abs_x_max == 0) && (gt1x_abs_y_max == 0)) {
644 gt1x_abs_x_max = (gt1x_config[RESOLUTION_LOC + 1] << 8) + gt1x_config[RESOLUTION_LOC];
645 gt1x_abs_y_max = (gt1x_config[RESOLUTION_LOC + 3] << 8) + gt1x_config[RESOLUTION_LOC + 2];
646 gt1x_int_type = (gt1x_config[TRIGGER_LOC]) & 0x03;
647 gt1x_wakeup_level = !(gt1x_config[MODULE_SWITCH3_LOC] & 0x20);
648 } else {
649 gt1x_config[RESOLUTION_LOC] = (u8) gt1x_abs_x_max;
650 gt1x_config[RESOLUTION_LOC + 1] = (u8) (gt1x_abs_x_max >> 8);
651 gt1x_config[RESOLUTION_LOC + 2] = (u8) gt1x_abs_y_max;
652 gt1x_config[RESOLUTION_LOC + 3] = (u8) (gt1x_abs_y_max >> 8);
653 set_reg_bit(gt1x_config[MODULE_SWITCH3_LOC], 5, !gt1x_wakeup_level);
654 gt1x_config[TRIGGER_LOC] = (gt1x_config[TRIGGER_LOC] & 0xFC) | gt1x_int_type;
655 }
656
657 GTP_INFO("X_MAX=%d,Y_MAX=%d,TRIGGER=0x%02x,WAKEUP_LEVEL=%d", gt1x_abs_x_max, gt1x_abs_y_max, gt1x_int_type, gt1x_wakeup_level);
658
659 gt1x_cfg_length = cfg_len;
660 ret = gt1x_send_cfg(gt1x_config, gt1x_cfg_length);
661 return ret;
662 }
663
gt1x_select_addr(void)664 void gt1x_select_addr(void)
665 {
666 if (gpio_is_valid(gt1x_rst_gpio))
667 GTP_GPIO_OUTPUT(GTP_RST_PORT, 0);
668 GTP_GPIO_OUTPUT(GTP_INT_PORT, gt1x_i2c_client->addr == 0x14);
669 usleep_range(2000, 3000);
670 if (gpio_is_valid(gt1x_rst_gpio))
671 GTP_GPIO_OUTPUT(GTP_RST_PORT, 1);
672 usleep_range(2000, 3000);
673 }
674
gt1x_set_reset_status(void)675 static s32 gt1x_set_reset_status(void)
676 {
677 /* 0x8040 ~ 0x8043 */
678 u8 value[] = {0xAA, 0x00, 0x56, 0xAA};
679 int ret;
680
681 GTP_DEBUG("Set reset status.");
682 ret = gt1x_i2c_write(GTP_REG_CMD + 1, &value[1], 3);
683 if (ret < 0)
684 return ret;
685
686 return gt1x_i2c_write(GTP_REG_CMD, value, 1);
687 }
688
689 #if GTP_INCELL_PANEL
gt1x_write_and_readback(u16 addr,u8 * buffer,s32 len)690 int gt1x_write_and_readback(u16 addr, u8 *buffer, s32 len)
691 {
692 int ret;
693 u8 d[len];
694
695 ret = gt1x_i2c_write(addr, buffer, len);
696 if (ret < 0)
697 return -1;
698
699 ret = gt1x_i2c_read(addr, d, len);
700 if (ret < 0 || memcmp(buffer, d, len))
701 return -1;
702
703 return 0;
704 }
705
gt1x_incell_reset(void)706 int gt1x_incell_reset(void)
707 {
708 #define RST_RETRY 5
709 int ret, retry = RST_RETRY;
710 u8 d[2];
711
712 do {
713 /* select i2c address */
714 gt1x_select_addr();
715
716 /* test i2c */
717 ret = gt1x_i2c_read(0x4220, d, 1);
718
719 } while (--retry && ret < 0);
720
721 if (ret < 0) {
722 return -1;
723 }
724
725 /* Stop cpu of the touch ic */
726 retry = RST_RETRY;
727 do {
728 d[0] = 0x0C;
729 ret = gt1x_write_and_readback(0x4180, d, 1);
730
731 } while (--retry && ret < 0);
732
733 if (ret < 0) {
734 GTP_ERROR("Hold error.");
735 return -1;
736 }
737
738 /* skip sensor id check. [start] */
739 retry = RST_RETRY;
740 do {
741 d[0] = 0x00;
742 ret = gt1x_write_and_readback(0x4305, d, 1);
743 if (ret < 0)
744 continue;
745
746 d[0] = 0x2B;
747 d[1] = 0x24;
748 ret = gt1x_write_and_readback(0x42c4, d, 2);
749 if (ret < 0)
750 continue;
751
752 d[0] = 0xE1;
753 d[1] = 0xD3;
754 ret = gt1x_write_and_readback(0x42e4, d, 2);
755 if (ret < 0)
756 continue;
757 d[0] = 0x01;
758 ret = gt1x_write_and_readback(0x4305, d, 1);
759 if (ret < 0)
760 continue;
761 else
762 break;
763 } while (--retry);
764
765 if (!retry)
766 return -1;
767 /* skip sensor id check. [end] */
768
769 /* release hold of cpu */
770 retry = RST_RETRY;
771 do {
772 d[0] = 0x00;
773 ret = gt1x_write_and_readback(0x4180, d, 1);
774
775 } while (--retry && ret < 0);
776
777 if (ret < 0)
778 return -1;
779
780 return 0;
781 }
782 #endif
783
gt1x_reset_guitar(void)784 s32 gt1x_reset_guitar(void)
785 {
786 int ret;
787
788 GTP_INFO("GTP RESET!");
789
790 #if GTP_INCELL_PANEL
791 ret = gt1x_incell_reset();
792 if (ret < 0)
793 return ret;
794 #else
795 gt1x_select_addr();
796 usleep_range(8000, 9000); /* must >= 6ms */
797 #endif
798
799 /* int synchronization */
800 GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
801 msleep(50);
802 GTP_GPIO_AS_INT(GTP_INT_PORT);
803
804 /* this operation is necessary even when the esd check
805 fucntion dose not turn on */
806 ret = gt1x_set_reset_status();
807 return ret;
808 }
809
810 /**
811 * gt1x_read_version - Read gt1x version info.
812 * @ver_info: address to store version info
813 * Return 0-succeed.
814 */
gt1x_read_version(struct gt1x_version_info * ver_info)815 s32 gt1x_read_version(struct gt1x_version_info *ver_info)
816 {
817 s32 ret = -1;
818 u8 buf[12] = { 0 };
819 u32 mask_id = 0;
820 u32 patch_id = 0;
821 u8 product_id[5] = { 0 };
822 u8 sensor_id = 0;
823 u8 match_opt = 0;
824 unsigned int i, retry = 3;
825 u8 checksum = 0;
826
827 GTP_DEBUG_FUNC();
828
829 while (retry--) {
830 ret = gt1x_i2c_read_dbl_check(GTP_REG_VERSION, buf, sizeof(buf));
831 if (!ret) {
832 checksum = 0;
833
834 for (i = 0; i < sizeof(buf); i++) {
835 checksum += buf[i];
836 }
837
838 if (checksum == 0 && /* first 3 bytes must be number or char */
839 IS_NUM_OR_CHAR(buf[0]) && IS_NUM_OR_CHAR(buf[1]) && IS_NUM_OR_CHAR(buf[2]) && buf[10] != 0xFF) { /*sensor id == 0xFF, retry */
840 break;
841 } else {
842 GTP_ERROR("Read version failed!(checksum error)");
843 }
844 } else {
845 GTP_ERROR("Read version failed!");
846 }
847 GTP_DEBUG("Read version : %d", retry);
848 msleep(100);
849 }
850
851 if (retry <= 0) {
852 if (ver_info)
853 ver_info->sensor_id = 0;
854 return -1;
855 }
856
857 mask_id = (u32) ((buf[7] << 16) | (buf[8] << 8) | buf[9]);
858 patch_id = (u32) ((buf[4] << 16) | (buf[5] << 8) | buf[6]);
859 memcpy(product_id, buf, 4);
860 sensor_id = buf[10] & 0x0F;
861 match_opt = (buf[10] >> 4) & 0x0F;
862
863 GTP_INFO("IC VERSION:GT%s_%06X(Patch)_%04X(Mask)_%02X(SensorID)", product_id, patch_id, mask_id >> 8, sensor_id);
864
865 if (ver_info != NULL) {
866 ver_info->mask_id = mask_id;
867 ver_info->patch_id = patch_id;
868 memcpy(ver_info->product_id, product_id, 5);
869 ver_info->sensor_id = sensor_id;
870 ver_info->match_opt = match_opt;
871 }
872 return 0;
873 }
874
875 /**
876 * gt1x_get_chip_type - get chip type .
877 *
878 * different chip synchronize in different way,
879 */
gt1x_get_chip_type(void)880 s32 gt1x_get_chip_type(void)
881 {
882 u8 opr_buf[4] = { 0x00 };
883 u8 gt1x_data[] = { 0x02, 0x08, 0x90, 0x00 };
884 u8 gt9l_data[] = { 0x03, 0x10, 0x90, 0x00 };
885 s32 ret = -1;
886
887 /* chip type already exist */
888 if (gt1x_chip_type != CHIP_TYPE_NONE) {
889 return 0;
890 }
891
892 /* read hardware */
893 ret = gt1x_i2c_read_dbl_check(GTP_REG_HW_INFO, opr_buf, sizeof(opr_buf));
894 if (ret) {
895 GTP_ERROR("I2c communication error.");
896 return -1;
897 }
898
899 /* find chip type */
900 if (!memcmp(opr_buf, gt1x_data, sizeof(gt1x_data))) {
901 gt1x_chip_type = CHIP_TYPE_GT1X;
902 } else if (!memcmp(opr_buf, gt9l_data, sizeof(gt9l_data))) {
903 gt1x_chip_type = CHIP_TYPE_GT2X;
904 }
905
906 if (gt1x_chip_type != CHIP_TYPE_NONE) {
907 GTP_INFO("Chip Type: %s", (gt1x_chip_type == CHIP_TYPE_GT1X) ? "GT1X" : "GT2X");
908 return 0;
909 } else {
910 return -1;
911 }
912 }
913
914 /**
915 * gt1x_enter_sleep - Eter sleep function.
916 *
917 * Returns 0--success,non-0--fail.
918 */
gt1x_enter_sleep(void)919 static s32 gt1x_enter_sleep(void)
920 {
921 s32 retry = 0;
922
923 #if GTP_POWER_CTRL_SLEEP
924 if (!gt1x_power_switch(SWITCH_OFF)) {
925 GTP_INFO("Enter sleep mode by poweroff");
926 return 0;
927 }
928 #endif
929
930 if (gt1x_wakeup_level == 1) { /* high level wakeup */
931 GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
932 }
933 usleep_range(5000, 6000);
934
935 while (retry++ < 3) {
936 if (!gt1x_send_cmd(GTP_CMD_SLEEP, 0)) {
937 GTP_INFO("Enter sleep mode!");
938 return 0;
939 }
940 usleep_range(10000, 11000);
941 }
942
943 GTP_ERROR("Enter sleep mode failed.");
944 return -1;
945 }
946
947 /**
948 * gt1x_wakeup_sleep - wakeup from sleep mode Function.
949 *
950 * Return: 0--success,non-0--fail.
951 */
gt1x_wakeup_sleep(void)952 static s32 gt1x_wakeup_sleep(void)
953 {
954 u8 retry = 0;
955 s32 ret = -1;
956 int flag = 0;
957
958 GTP_DEBUG("Wake up begin.");
959 gt1x_irq_disable();
960
961 #if GTP_POWER_CTRL_SLEEP /* power manager unit control the procedure */
962 if (!gt1x_power_switch(SWITCH_ON)) {
963 gt1x_power_reset();
964 GTP_INFO("Wakeup by poweron");
965 return 0;
966 }
967 #endif
968
969 /* gesture wakeup & int port wakeup */
970 while (retry++ < 2) {
971 #if GTP_GESTURE_WAKEUP
972 if (gesture_enabled) {
973 gesture_doze_status = DOZE_DISABLED;
974 ret = gt1x_reset_guitar();
975 if (!ret) {
976 break;
977 }
978 } else
979 #endif
980 {
981 /* wake up through int port */
982 GTP_GPIO_OUTPUT(GTP_INT_PORT, gt1x_wakeup_level);
983 usleep_range(5000, 6000);
984
985 /* Synchronize int IO */
986 GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
987 msleep(50);
988 GTP_GPIO_AS_INT(GTP_INT_PORT);
989 flag = 1;
990
991 #if GTP_ESD_PROTECT
992 ret = gt1x_set_reset_status();
993 #else
994 ret = gt1x_i2c_test();
995 #endif
996 if (!ret)
997 break;
998 } /* end int wakeup */
999 }
1000
1001 if (ret < 0 && flag) { /* int wakeup failed , try waking up by reset */
1002 while (retry--) {
1003 ret = gt1x_reset_guitar();
1004 if (!ret)
1005 break;
1006 }
1007 }
1008
1009 if (ret) {
1010 GTP_ERROR("Wake up sleep failed.");
1011 return -1;
1012 } else {
1013 GTP_INFO("Wake up end.");
1014 return 0;
1015 }
1016 }
1017
1018 /**
1019 * gt1x_send_cmd - seng cmd
1020 * must write data & checksum first
1021 * byte content
1022 * 0 cmd
1023 * 1 data
1024 * 2 checksum
1025 * Returns 0 - succeed,non-0 - failed
1026 */
gt1x_send_cmd(u8 cmd,u8 data)1027 s32 gt1x_send_cmd(u8 cmd, u8 data)
1028 {
1029 s32 ret;
1030 static DEFINE_MUTEX(cmd_mutex);
1031 u8 buffer[3] = { cmd, data, 0 };
1032
1033 mutex_lock(&cmd_mutex);
1034 buffer[2] = (u8) ((0 - cmd - data) & 0xFF);
1035 ret = gt1x_i2c_write(GTP_REG_CMD + 1, &buffer[1], 2);
1036 ret |= gt1x_i2c_write(GTP_REG_CMD, &buffer[0], 1);
1037 msleep(50);
1038 mutex_unlock(&cmd_mutex);
1039
1040 return ret;
1041 }
1042
gt1x_power_reset(void)1043 void gt1x_power_reset(void)
1044 {
1045 static int rst_flag;
1046 s32 i = 0;
1047
1048 if (rst_flag || update_info.status) {
1049 return;
1050 }
1051 GTP_INFO("force_reset_guitar");
1052 rst_flag = 1;
1053 gt1x_irq_disable();
1054 gt1x_power_switch(SWITCH_OFF);
1055 msleep(30);
1056 gt1x_power_switch(SWITCH_ON);
1057 msleep(30);
1058
1059 for (i = 0; i < 5; i++) {
1060 if (gt1x_reset_guitar()) {
1061 continue;
1062 }
1063 if (gt1x_send_cfg(gt1x_config, gt1x_cfg_length)) {
1064 msleep(500);
1065 continue;
1066 }
1067 break;
1068 }
1069 gt1x_irq_enable();
1070 rst_flag = 0;
1071 }
1072
gt1x_request_event_handler(void)1073 s32 gt1x_request_event_handler(void)
1074 {
1075 s32 ret = -1;
1076 u8 rqst_data = 0;
1077
1078 ret = gt1x_i2c_read(GTP_REG_RQST, &rqst_data, 1);
1079 if (ret) {
1080 GTP_ERROR("I2C transfer error. errno:%d", ret);
1081 return -1;
1082 }
1083 GTP_DEBUG("Request state:0x%02x.", rqst_data);
1084 switch (rqst_data & 0x0F) {
1085 case GTP_RQST_CONFIG:
1086 GTP_INFO("Request Config.");
1087 ret = gt1x_send_cfg(gt1x_config, gt1x_cfg_length);
1088 if (ret) {
1089 GTP_ERROR("Send gt1x_config error.");
1090 } else {
1091 GTP_INFO("Send gt1x_config success.");
1092 rqst_data = GTP_RQST_RESPONDED;
1093 gt1x_i2c_write(GTP_REG_RQST, &rqst_data, 1);
1094 }
1095 break;
1096 case GTP_RQST_RESET:
1097 GTP_INFO("Request Reset.");
1098 gt1x_reset_guitar();
1099 rqst_data = GTP_RQST_RESPONDED;
1100 gt1x_i2c_write(GTP_REG_RQST, &rqst_data, 1);
1101 break;
1102 case GTP_RQST_BAK_REF:
1103 GTP_INFO("Request Ref.");
1104 break;
1105 case GTP_RQST_MAIN_CLOCK:
1106 GTP_INFO("Request main clock.");
1107 break;
1108 #if GTP_HOTKNOT
1109 case GTP_RQST_HOTKNOT_CODE:
1110 GTP_INFO("Request HotKnot Code.");
1111 break;
1112 #endif
1113 default:
1114 break;
1115 }
1116 return 0;
1117 }
1118
1119 /**
1120 * gt1x_touch_event_handler - handle touch event
1121 * (pen event, key event, finger touch envent)
1122 * @data:
1123 * Return <0: failed, 0: succeed
1124 */
gt1x_touch_event_handler(u8 * data,struct input_dev * dev,struct input_dev * pen_dev)1125 s32 gt1x_touch_event_handler(u8 *data, struct input_dev *dev, struct input_dev *pen_dev)
1126 {
1127 u8 touch_data[1 + 8 * GTP_MAX_TOUCH + 2] = { 0 };
1128 static u16 pre_event;
1129 static u16 pre_index;
1130 u8 touch_num = 0;
1131 u8 key_value = 0;
1132 u16 cur_event = 0;
1133 u8 *coor_data = NULL;
1134 u8 check_sum = 0;
1135 s32 input_x = 0;
1136 s32 input_y = 0;
1137 s32 input_w = 0;
1138 s32 id = 0;
1139 s32 i = 0;
1140 s32 ret = -1;
1141
1142 GTP_DEBUG_FUNC();
1143 touch_num = data[0] & 0x0f;
1144 if (touch_num > GTP_MAX_TOUCH) {
1145 GTP_ERROR("Illegal finger number!");
1146 return ERROR_VALUE;
1147 }
1148
1149 memcpy(touch_data, data, 11);
1150
1151 /* read the remaining coor data
1152 * 0x814E(touch status) + 8(every coordinate consist of 8 bytes data) * touch num +
1153 * keycode + checksum
1154 */
1155 if (touch_num > 1) {
1156 ret = gt1x_i2c_read((GTP_READ_COOR_ADDR + 11), &touch_data[11], 1 + 8 * touch_num + 2 - 11);
1157 if (ret) {
1158 return ret;
1159 }
1160 }
1161
1162 /* cacl checksum */
1163 for (i = 0; i < 1 + 8 * touch_num + 2; i++) {
1164 check_sum += touch_data[i];
1165 }
1166 if (check_sum) { /* checksum error*/
1167 ret = gt1x_i2c_read(GTP_READ_COOR_ADDR, touch_data, 3 + 8 * touch_num);
1168 if (ret) {
1169 return ret;
1170 }
1171
1172 for (i = 0, check_sum = 0; i < 3 + 8 * touch_num; i++) {
1173 check_sum += touch_data[i];
1174 }
1175 if (check_sum) {
1176 GTP_ERROR("Checksum error[%x]", check_sum);
1177 return ERROR_VALUE;
1178 }
1179 }
1180 /*
1181 * cur_event , pre_event bit defination
1182 * bits: bit4 bit3 bit2 bit1 bit0
1183 * event: hover stylus_key stylus key touch
1184 */
1185 key_value = touch_data[1 + 8 * touch_num];
1186 /* start check current event */
1187 if ((touch_data[0] & 0x10) && key_value) {
1188 #if (GTP_HAVE_STYLUS_KEY || GTP_HAVE_TOUCH_KEY || TPD_HAVE_BUTTON)
1189 /* get current key states */
1190 if (key_value & 0xF0) {
1191 SET_BIT(cur_event, BIT_STYLUS_KEY);
1192 } else if (key_value & 0x0F) {
1193 SET_BIT(cur_event, BIT_TOUCH_KEY);
1194 }
1195 #endif
1196 }
1197 #if GTP_WITH_STYLUS
1198 else if (touch_data[1] & 0x80) {
1199 SET_BIT(cur_event, BIT_STYLUS);
1200 }
1201 #endif
1202 else if (touch_num) {
1203 SET_BIT(cur_event, BIT_TOUCH);
1204 }
1205
1206 /* start handle current event and pre-event */
1207 #if GTP_HAVE_STYLUS_KEY
1208 if (CHK_BIT(cur_event, BIT_STYLUS_KEY) || CHK_BIT(pre_event, BIT_STYLUS_KEY)) {
1209 /*
1210 * 0x10 -- stylus key0 down
1211 * 0x20 -- stylus key1 down
1212 * 0x40 -- stylus key0 & stylus key1 both down
1213 */
1214 u8 temp = (key_value & 0x40) ? 0x30 : key_value;
1215 for (i = 4; i < 6; i++) {
1216 input_report_key(pen_dev, gt1x_stylus_key_array[i - 4], temp & (0x01 << i));
1217 }
1218 GTP_DEBUG("Stulus key event.");
1219 }
1220 #endif
1221
1222 #if GTP_WITH_STYLUS
1223 if (CHK_BIT(cur_event, BIT_STYLUS)) {
1224 coor_data = &touch_data[1];
1225 id = coor_data[0] & 0x7F;
1226 input_x = coor_data[1] | (coor_data[2] << 8);
1227 input_y = coor_data[3] | (coor_data[4] << 8);
1228 input_w = coor_data[5] | (coor_data[6] << 8);
1229
1230 input_x = GTP_WARP_X(gt1x_abs_x_max, input_x);
1231 input_y = GTP_WARP_Y(gt1x_abs_y_max, input_y);
1232
1233 GTP_DEBUG("Pen touch DOWN.");
1234 gt1x_pen_down(input_x, input_y, input_w, 0);
1235 } else if (CHK_BIT(pre_event, BIT_STYLUS)) {
1236 GTP_DEBUG("Pen touch UP.");
1237 gt1x_pen_up(0);
1238 }
1239 #endif
1240
1241 #if GTP_HAVE_TOUCH_KEY
1242 if (CHK_BIT(cur_event, BIT_TOUCH_KEY) || CHK_BIT(pre_event, BIT_TOUCH_KEY)) {
1243 for (i = 0; i < GTP_MAX_KEY_NUM; i++) {
1244 input_report_key(dev, gt1x_touch_key_array[i], key_value & (0x01 << i));
1245 }
1246 if (CHK_BIT(cur_event, BIT_TOUCH_KEY)) {
1247 GTP_DEBUG("Key Down.");
1248 } else {
1249 GTP_DEBUG("Key Up.");
1250 }
1251 }
1252 #elif TPD_HAVE_BUTTON
1253 if (CHK_BIT(cur_event, BIT_TOUCH_KEY) || CHK_BIT(pre_event, BIT_TOUCH_KEY)) {
1254 for (i = 0; i < TPD_KEY_COUNT; i++) {
1255 if (key_value & (0x01 << i)) {
1256 gt1x_touch_down(tpd_virtual_key_array[i].x, tpd_virtual_key_array[i].y, 0, 0);
1257 GTP_DEBUG("Key Down.");
1258 break;
1259 }
1260 }
1261 if (i == TPD_KEY_COUNT) {
1262 gt1x_touch_up(0);
1263 GTP_DEBUG("Key Up.");
1264 }
1265 }
1266 #endif
1267
1268 /* finger touch event*/
1269 if (CHK_BIT(cur_event, BIT_TOUCH)) {
1270 u8 report_num = 0;
1271 coor_data = &touch_data[1];
1272 id = coor_data[0] & 0x0F;
1273 for (i = 0; i < GTP_MAX_TOUCH; i++) {
1274 if (i == id) {
1275 input_x = coor_data[1] | (coor_data[2] << 8);
1276 input_y = coor_data[3] | (coor_data[4] << 8);
1277 input_w = coor_data[5] | (coor_data[6] << 8);
1278
1279 input_x = GTP_WARP_X(gt1x_abs_x_max, input_x);
1280 input_y = GTP_WARP_Y(gt1x_abs_y_max, input_y);
1281
1282 GTP_DEBUG("(%d)(%d,%d)[%d]", id, input_x, input_y, input_w);
1283 gt1x_touch_down(input_x, input_y, input_w, i);
1284 if (report_num++ < touch_num) {
1285 coor_data += 8;
1286 id = coor_data[0] & 0x0F;
1287 }
1288 pre_index |= 0x01 << i;
1289 } else if (pre_index & (0x01 << i)) {
1290 if (gt1x_ics_slot_report)
1291 gt1x_touch_up(i);
1292 pre_index &= ~(0x01 << i);
1293 }
1294 }
1295 } else if (CHK_BIT(pre_event, BIT_TOUCH)) {
1296 if (gt1x_ics_slot_report) {
1297 int cycles = pre_index < 3 ? 3 : GTP_MAX_TOUCH;
1298
1299 for (i = 0; i < cycles; i++) {
1300 if (pre_index >> i & 0x01)
1301 gt1x_touch_up(i);
1302 }
1303 } else {
1304 gt1x_touch_up(0);
1305 }
1306 GTP_DEBUG("Released Touch.");
1307 pre_index = 0;
1308 }
1309
1310 /* start sync input report */
1311 if (CHK_BIT(cur_event, BIT_STYLUS_KEY | BIT_STYLUS)
1312 || CHK_BIT(pre_event, BIT_STYLUS_KEY | BIT_STYLUS)) {
1313 input_sync(pen_dev);
1314 }
1315
1316 if (CHK_BIT(cur_event, BIT_TOUCH_KEY | BIT_TOUCH)
1317 || CHK_BIT(pre_event, BIT_TOUCH_KEY | BIT_TOUCH)) {
1318 input_sync(dev);
1319 }
1320
1321 if (unlikely(!pre_event && !cur_event)) {
1322 GTP_DEBUG("Additional Int Pulse.");
1323 } else {
1324 pre_event = cur_event;
1325 }
1326
1327 return 0;
1328 }
1329
1330 #if GTP_WITH_STYLUS
1331 struct input_dev *pen_dev;
1332
gt1x_pen_init(void)1333 static void gt1x_pen_init(void)
1334 {
1335 s32 ret = 0;
1336
1337 pen_dev = input_allocate_device();
1338 if (pen_dev == NULL) {
1339 GTP_ERROR("Failed to allocate input device for pen/stylus.");
1340 return;
1341 }
1342
1343 pen_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1344 pen_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1345
1346 set_bit(BTN_TOOL_PEN, pen_dev->keybit);
1347 set_bit(INPUT_PROP_DIRECT, pen_dev->propbit);
1348
1349 #if GTP_HAVE_STYLUS_KEY
1350 input_set_capability(pen_dev, EV_KEY, BTN_STYLUS);
1351 input_set_capability(pen_dev, EV_KEY, BTN_STYLUS2);
1352 #endif
1353
1354 input_set_abs_params(pen_dev, ABS_MT_POSITION_X, 0, gt1x_abs_x_max, 0, 0);
1355 input_set_abs_params(pen_dev, ABS_MT_POSITION_Y, 0, gt1x_abs_y_max, 0, 0);
1356 input_set_abs_params(pen_dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1357 input_set_abs_params(pen_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
1358 input_set_abs_params(pen_dev, ABS_MT_TRACKING_ID, 0, 255, 0, 0);
1359
1360 pen_dev->name = "goodix-pen";
1361 pen_dev->phys = "input/ts";
1362 pen_dev->id.bustype = BUS_I2C;
1363
1364 ret = input_register_device(pen_dev);
1365 if (ret) {
1366 GTP_ERROR("Register %s input device failed", pen_dev->name);
1367 return;
1368 }
1369 }
1370
gt1x_pen_down(s32 x,s32 y,s32 size,s32 id)1371 void gt1x_pen_down(s32 x, s32 y, s32 size, s32 id)
1372 {
1373 input_report_key(pen_dev, BTN_TOOL_PEN, 1);
1374 #if GTP_CHANGE_X2Y
1375 GTP_SWAP(x, y);
1376 #endif
1377
1378 if (gt1x_ics_slot_report) {
1379 input_mt_slot(pen_dev, id);
1380 input_report_abs(pen_dev, ABS_MT_PRESSURE, size);
1381 input_report_abs(pen_dev, ABS_MT_TOUCH_MAJOR, size);
1382 input_report_abs(pen_dev, ABS_MT_TRACKING_ID, id);
1383 input_report_abs(pen_dev, ABS_MT_POSITION_X, x);
1384 input_report_abs(pen_dev, ABS_MT_POSITION_Y, y);
1385 } else {
1386 input_report_key(pen_dev, BTN_TOUCH, 1);
1387 if ((!size) && (!id)) {
1388 /* for virtual button */
1389 input_report_abs(pen_dev, ABS_MT_PRESSURE, 100);
1390 input_report_abs(pen_dev, ABS_MT_TOUCH_MAJOR, 100);
1391 } else {
1392 input_report_abs(pen_dev, ABS_MT_PRESSURE, size);
1393 input_report_abs(pen_dev, ABS_MT_TOUCH_MAJOR, size);
1394 input_report_abs(pen_dev, ABS_MT_TRACKING_ID, id);
1395 }
1396 input_report_abs(pen_dev, ABS_MT_POSITION_X, x);
1397 input_report_abs(pen_dev, ABS_MT_POSITION_Y, y);
1398 input_mt_sync(pen_dev);
1399 }
1400 }
1401
gt1x_pen_up(s32 id)1402 void gt1x_pen_up(s32 id)
1403 {
1404 input_report_key(pen_dev, BTN_TOOL_PEN, 0);
1405 if (gt1x_ics_slot_report) {
1406 input_mt_slot(pen_dev, id);
1407 input_report_abs(pen_dev, ABS_MT_TRACKING_ID, -1);
1408 } else {
1409 input_report_key(pen_dev, BTN_TOUCH, 0);
1410 input_mt_sync(pen_dev);
1411 }
1412 }
1413 #endif
1414
1415 /**
1416 * Proximity Module
1417 */
1418 #if GTP_PROXIMITY
1419 #define GTP_PS_DEV_NAME "goodix_proximity"
1420 #define GTP_REG_PROXIMITY_ENABLE 0x8049
1421 #define PS_FARAWAY 1
1422 #define PS_NEAR 0
1423 struct gt1x_ps_device{
1424 int enabled; /* module enabled/disabled */
1425 int state; /* Faraway or Near */
1426 #ifdef PLATFORM_MTK
1427 struct hwmsen_object obj_ps;
1428 #else
1429 struct input_dev *input_dev;
1430 struct kobject *kobj;
1431 #endif
1432 };
1433 static struct gt1x_ps_device *gt1x_ps_dev;
1434
gt1x_ps_report(int state)1435 static void gt1x_ps_report(int state)
1436 {
1437 #ifdef PLATFORM_MTK
1438 s32 ret = -1;
1439
1440 hwm_sensor_data sensor_data;
1441 /*map and store data to hwm_sensor_data*/
1442 sensor_data.values[0] = !!state;
1443 sensor_data.value_divide = 1;
1444 sensor_data.status = SENSOR_STATUS_ACCURACY_MEDIUM;
1445 /*report to the up-layer*/
1446 ret = hwmsen_get_interrupt_data(ID_PROXIMITY, &sensor_data);
1447 if (ret) {
1448 GTP_ERROR("Call hwmsen_get_interrupt_data fail = %d\n", ret);
1449 }
1450 #else
1451 input_report_abs(gt1x_ps_dev->input_dev, ABS_DISTANCE, !!state);
1452 input_sync(gt1x_ps_dev->input_dev);
1453 #endif /* End PLATFROM_MTK */
1454
1455 GTP_INFO("Report proximity state: %s", state == PS_FARAWAY ? "FARAWAY":"NEAR");
1456 }
1457
gt1x_ps_enable(s32 enable)1458 static s32 gt1x_ps_enable(s32 enable)
1459 {
1460 u8 state;
1461 s32 ret = -1;
1462
1463 GTP_INFO("Proximity function to be %s.", enable ? "on" : "off");
1464 state = enable ? 1 : 0;
1465 if (gt1x_chip_type == CHIP_TYPE_GT1X)
1466 ret = gt1x_i2c_write(GTP_REG_PROXIMITY_ENABLE, &state, 1);
1467 else if (gt1x_chip_type == CHIP_TYPE_GT2X)
1468 ret = gt1x_send_cmd(state ? 0x12 : 0x13, 0);
1469 if (ret) {
1470 GTP_ERROR("GTP %s proximity cmd failed.", state ? "enable" : "disable");
1471 }
1472
1473 if (!ret && enable) {
1474 gt1x_ps_dev->enabled = 1;
1475 } else {
1476 gt1x_ps_dev->enabled = 0;
1477 }
1478 gt1x_ps_dev->state = PS_FARAWAY;
1479 GTP_INFO("Proximity function %s %s.", state ? "enable" : "disable", ret ? "fail" : "success");
1480 return ret;
1481 }
1482
gt1x_prox_event_handler(u8 * data)1483 int gt1x_prox_event_handler(u8 *data)
1484 {
1485 u8 ps = 0;
1486
1487 if (gt1x_ps_dev && gt1x_ps_dev->enabled) {
1488 ps = (data[0] & 0x60) ? 0 : 1;
1489 if (ps != gt1x_ps_dev->state) {
1490 gt1x_ps_report(ps);
1491 gt1x_ps_dev->state = ps;
1492 GTP_DEBUG("REG INDEX[0x814E]:0x%02X\n", data[0]);
1493 }
1494
1495 return (ps == PS_NEAR ? 1 : 0);
1496 }
1497 return -1;
1498 }
1499
1500 #ifdef PLATFORM_MTK
gt1x_get_ps_value(void)1501 static inline s32 gt1x_get_ps_value(void)
1502 {
1503 return gt1x_ps_dev->state;
1504 }
1505
gt1x_ps_operate(void * self,u32 command,void * buff_in,s32 size_in,void * buff_out,s32 size_out,s32 * actualout)1506 static s32 gt1x_ps_operate(void *self, u32 command, void *buff_in, s32 size_in, void *buff_out, s32 size_out, s32 *actualout)
1507 {
1508 s32 err = 0;
1509 s32 value;
1510 hwm_sensor_data *sensor_data;
1511
1512 GTP_INFO("psensor operator cmd:%d", command);
1513 switch (command) {
1514 case SENSOR_DELAY:
1515 if ((buff_in == NULL) || (size_in < sizeof(int))) {
1516 GTP_ERROR("Set delay parameter error!");
1517 err = -EINVAL;
1518 }
1519 /*Do nothing*/
1520 break;
1521
1522 case SENSOR_ENABLE:
1523 if ((buff_in == NULL) || (size_in < sizeof(int))) {
1524 GTP_ERROR("Enable sensor parameter error!");
1525 err = -EINVAL;
1526 } else {
1527 value = *(int *)buff_in;
1528 err = gt1x_ps_enable(value);
1529 }
1530
1531 break;
1532
1533 case SENSOR_GET_DATA:
1534 if ((buff_out == NULL) || (size_out < sizeof(hwm_sensor_data))) {
1535 GTP_ERROR("Get sensor data parameter error!");
1536 err = -EINVAL;
1537 } else {
1538 sensor_data = (hwm_sensor_data *) buff_out;
1539 sensor_data->values[0] = gt1x_get_ps_value();
1540 sensor_data->value_divide = 1;
1541 sensor_data->status = SENSOR_STATUS_ACCURACY_MEDIUM;
1542 }
1543
1544 break;
1545
1546 default:
1547 GTP_ERROR("proxmy sensor operate function no this parameter %d!\n", command);
1548 err = -1;
1549 break;
1550 }
1551
1552 return err;
1553 }
1554 #endif
1555
1556 #ifndef PLATFORM_MTK
gt1x_ps_enable_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)1557 static ssize_t gt1x_ps_enable_show(struct kobject *kobj, struct kobj_attribute *attr,
1558 char *buf)
1559 {
1560 return scnprintf(buf, PAGE_SIZE, "%d", gt1x_ps_dev->enabled);
1561 }
1562
gt1x_ps_enable_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)1563 static ssize_t gt1x_ps_enable_store(struct kobject *kobj, struct kobj_attribute *attr,
1564 const char *buf, size_t count)
1565 {
1566 unsigned int input;
1567 if (sscanf(buf, "%u", &input) != 1) {
1568 return -EINVAL;
1569 }
1570 if (input == 1) {
1571 gt1x_ps_enable(1);
1572 gt1x_ps_report(PS_FARAWAY);
1573 } else if (input == 0) {
1574 gt1x_ps_report(PS_FARAWAY);
1575 gt1x_ps_enable(0);
1576 } else {
1577 return -EINVAL;
1578 }
1579 return count;
1580 }
1581
gt1x_ps_state_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)1582 static ssize_t gt1x_ps_state_show(struct kobject *kobj, struct kobj_attribute *attr,
1583 char *buf)
1584 {
1585 return scnprintf(buf, PAGE_SIZE, "%d", gt1x_ps_dev->state);
1586 }
1587
gt1x_ps_state_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)1588 static ssize_t gt1x_ps_state_store(struct kobject *kobj, struct kobj_attribute *attr,
1589 const char *buf, size_t count)
1590 {
1591 unsigned int input;
1592
1593 if (sscanf(buf, "%u", &input) != 1) {
1594 return -EINVAL;
1595 }
1596
1597 if (!gt1x_ps_dev->enabled) {
1598 return -EINVAL;
1599 }
1600
1601 if (input == 1) {
1602 gt1x_ps_dev->state = PS_FARAWAY;
1603 } else if (input == 0) {
1604 gt1x_ps_dev->state = PS_NEAR;
1605 } else {
1606 return -EINVAL;
1607 }
1608
1609 gt1x_ps_report(gt1x_ps_dev->state);
1610 return count;
1611 }
1612
1613 static struct kobj_attribute ps_attrs[] = {
1614 __ATTR(enable, S_IWUGO | S_IRUGO, gt1x_ps_enable_show, gt1x_ps_enable_store),
1615 __ATTR(state, S_IWUGO | S_IRUGO, gt1x_ps_state_show, gt1x_ps_state_store)
1616 };
1617
1618 #endif /* End PLATFORM_MTK */
1619
gt1x_ps_init(void)1620 static int gt1x_ps_init(void)
1621 {
1622 int err;
1623
1624 gt1x_ps_dev = kzalloc(sizeof(struct gt1x_ps_device), GFP_KERNEL);
1625 if (!gt1x_ps_dev) {
1626 return -ENOMEM;
1627 }
1628
1629 gt1x_ps_dev->state = PS_FARAWAY;
1630
1631 #ifdef PLATFORM_MTK
1632 gt1x_ps_dev->obj_ps.polling = 0; /* 0--interrupt mode;1--polling mode; */
1633 gt1x_ps_dev->obj_ps.sensor_operate = gt1x_ps_operate;
1634
1635 if (hwmsen_attach(ID_PROXIMITY, >1x_ps_dev->obj_ps)) {
1636 GTP_ERROR("hwmsen attach fail, return:%d.", err);
1637 goto err_exit;
1638 }
1639
1640 GTP_INFO("hwmsen attach OK.");
1641 return 0;
1642 #else
1643 gt1x_ps_dev->input_dev = input_allocate_device();
1644 if (!gt1x_ps_dev->input_dev) {
1645 GTP_ERROR("Failed to alloc inpput device for proximity!");
1646 err = -ENOMEM;
1647 goto err_exit;
1648 }
1649
1650 gt1x_ps_dev->input_dev->name = GTP_PS_DEV_NAME;
1651 gt1x_ps_dev->input_dev->phys = "goodix/proximity";
1652 gt1x_ps_dev->input_dev->id.bustype = BUS_I2C;
1653 gt1x_ps_dev->input_dev->id.vendor = 0xDEED;
1654 gt1x_ps_dev->input_dev->id.product = 0xBEEF;
1655 gt1x_ps_dev->input_dev->id.version = 1;
1656 set_bit(EV_ABS, gt1x_ps_dev->input_dev->evbit);
1657 input_set_abs_params(gt1x_ps_dev->input_dev, ABS_DISTANCE, 0, 1, 0, 0);
1658
1659 err = input_register_device(gt1x_ps_dev->input_dev);
1660 if (err) {
1661 GTP_ERROR("Failed to register proximity input device: %s!", gt1x_ps_dev->input_dev->name);
1662 goto err_register_dev;
1663 }
1664 /* register sysfs interface */
1665 if (!sysfs_rootdir) {
1666 sysfs_rootdir = kobject_create_and_add("goodix", NULL);
1667 if (!sysfs_rootdir) {
1668 GTP_ERROR("Failed to create and add sysfs interface: goodix.");
1669 err = -ENOMEM;
1670 goto err_register_dev;
1671 }
1672 }
1673
1674 gt1x_ps_dev->kobj = kobject_create_and_add("proximity", sysfs_rootdir);
1675 if (!gt1x_ps_dev->kobj) {
1676 GTP_ERROR("Failed to create and add sysfs interface: proximity.");
1677 err = -ENOMEM;
1678 goto err_register_dev;
1679 }
1680 /*create sysfs files*/
1681 {
1682 int i;
1683 for (i = 0; i < sizeof(ps_attrs)/sizeof(ps_attrs[0]); i++) {
1684 if (sysfs_create_file(gt1x_ps_dev->kobj, &ps_attrs[i].attr)) {
1685 goto err_create_file;
1686 }
1687 }
1688 }
1689
1690 GTP_INFO("Proximity sensor init OK.");
1691 return 0;
1692 err_create_file:
1693 kobject_put(gt1x_ps_dev->kobj);
1694 err_register_dev:
1695 input_free_device(gt1x_ps_dev->input_dev);
1696 #endif /* End PLATFROM_MTK */
1697
1698 err_exit:
1699 kfree(gt1x_ps_dev);
1700 gt1x_ps_dev = NULL;
1701 return err;
1702 }
1703
gt1x_ps_deinit(void)1704 static void gt1x_ps_deinit(void)
1705 {
1706 if (gt1x_ps_dev) {
1707 #ifndef PLATFORM_MTK
1708 int i = 0;
1709 for (; i < sizeof(ps_attrs) / sizeof(ps_attrs[0]); i++) {
1710 sysfs_remove_file(gt1x_ps_dev->kobj, &ps_attrs[i].attr);
1711 }
1712 kobject_del(gt1x_ps_dev->kobj);
1713 input_free_device(gt1x_ps_dev->input_dev);
1714 #endif
1715 kfree(gt1x_ps_dev);
1716 }
1717 }
1718
1719 #endif /*GTP_PROXIMITY */
1720
1721 /**
1722 * ESD Protect Module
1723 */
1724 #if GTP_ESD_PROTECT
1725 static int esd_work_cycle = 200;
1726 static struct delayed_work esd_check_work;
1727 static int esd_running;
1728 static struct mutex esd_lock;
1729 static void gt1x_esd_check_func(struct work_struct *);
1730
gt1x_init_esd_protect(void)1731 void gt1x_init_esd_protect(void)
1732 {
1733 esd_work_cycle = 2 * HZ; /* HZ: clock ticks in 1 second generated by system */
1734 GTP_DEBUG("Clock ticks for an esd cycle: %d", esd_work_cycle);
1735 INIT_DELAYED_WORK(&esd_check_work, gt1x_esd_check_func);
1736 mutex_init(&esd_lock);
1737 }
1738
gt1x_deinit_esd_protect(void)1739 static void gt1x_deinit_esd_protect(void)
1740 {
1741 gt1x_esd_switch(SWITCH_OFF);
1742 }
1743
gt1x_esd_switch(s32 on)1744 void gt1x_esd_switch(s32 on)
1745 {
1746 mutex_lock(&esd_lock);
1747 if (SWITCH_ON == on) { /* switch on esd check */
1748 if (!esd_running) {
1749 esd_running = 1;
1750 GTP_INFO("Esd protector started!");
1751 queue_delayed_work(gt1x_workqueue, &esd_check_work, esd_work_cycle);
1752 }
1753 } else { /* switch off esd check */
1754 if (esd_running) {
1755 esd_running = 0;
1756 GTP_INFO("Esd protector stoped!");
1757 cancel_delayed_work(&esd_check_work);
1758 }
1759 }
1760 mutex_unlock(&esd_lock);
1761 }
1762
gt1x_esd_check_func(struct work_struct * work)1763 static void gt1x_esd_check_func(struct work_struct *work)
1764 {
1765 s32 i = 0;
1766 s32 ret = -1;
1767 u8 esd_buf[4] = { 0 };
1768
1769 if (!esd_running) {
1770 GTP_INFO("Esd protector suspended!");
1771 return;
1772 }
1773
1774 for (i = 0; i < 3; i++) {
1775 ret = gt1x_i2c_read(GTP_REG_CMD, esd_buf, 4);
1776 GTP_DEBUG("[Esd]0x8040 = 0x%02X, 0x8043 = 0x%02X", esd_buf[0], esd_buf[3]);
1777 if (!ret && esd_buf[0] != 0xAA && esd_buf[3] == 0xAA) {
1778 break;
1779 }
1780 msleep(50);
1781 }
1782
1783 if (likely(i < 3)) {
1784 /* IC works normally, Write 0x8040 0xAA, feed the watchdog */
1785 gt1x_send_cmd(GTP_CMD_ESD, 0);
1786 } else {
1787 if (esd_running) {
1788 GTP_ERROR("IC works abnormally! Process reset guitar.");
1789 memset(esd_buf, 0x01, sizeof(esd_buf));
1790 gt1x_i2c_write(0x4226, esd_buf, sizeof(esd_buf));
1791 msleep(50);
1792
1793 gt1x_power_reset();
1794 } else {
1795 GTP_INFO("Esd protector suspended, no need reset!");
1796 }
1797 }
1798
1799 mutex_lock(&esd_lock);
1800 if (esd_running) {
1801 queue_delayed_work(gt1x_workqueue, &esd_check_work, esd_work_cycle);
1802 } else {
1803 GTP_INFO("Esd protector suspended!");
1804 }
1805 mutex_unlock(&esd_lock);
1806 }
1807 #endif
1808
1809 /**
1810 * Smart Cover Module
1811 */
1812 #if GTP_SMART_COVER
1813 struct smart_cover_device{
1814 int enabled;
1815 int state; /* 0:cover faraway 1:near */
1816 int suspended; /* suspended or woring */
1817 struct kobject *kobj;
1818 u8 config[GTP_CONFIG_MAX_LENGTH];
1819 int cfg_len;
1820 };
1821 static struct smart_cover_device *gt1x_sc_dev;
1822
1823 /**
1824 * gt1x_smart_cover_update_state - update smart cover config
1825 */
gt1x_smart_cover_update_state(void)1826 static int gt1x_smart_cover_update_state(void)
1827 {
1828 int ret = 0;
1829 struct smart_cover_device *dev = gt1x_sc_dev;
1830
1831 if (!dev) {
1832 return -ENODEV;
1833 }
1834
1835 if (!dev->suspended) {
1836 if (dev->state) { /* near */
1837 ret = gt1x_send_cfg(dev->config, dev->cfg_len);
1838 } else {
1839 #if GTP_CHARGER_SWITCH
1840 gt1x_charger_config(1); /*charger detector module check and*/
1841 /*send a config*/
1842 #else
1843 ret = gt1x_send_cfg(gt1x_config, gt1x_cfg_length);
1844 #endif
1845 }
1846 GTP_DEBUG("Update cover state %s.", dev->state ? "Nearby" : "Far away");
1847 } else {
1848 GTP_DEBUG("TP is suspended, do nothing.");
1849 }
1850 return ret;
1851 }
1852
smart_cover_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)1853 static ssize_t smart_cover_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
1854 {
1855 struct smart_cover_device *dev = gt1x_sc_dev;
1856
1857 if (!dev) {
1858 return -ENODEV;
1859 }
1860
1861 return scnprintf(buf, PAGE_SIZE, "%d", dev->state);
1862 }
1863
smart_cover_store(struct kobject * kobj,struct kobj_attribute * attr,const char * buf,size_t count)1864 static ssize_t smart_cover_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
1865 {
1866 struct smart_cover_device *dev = gt1x_sc_dev;
1867 int s = (buf[0] - '0');
1868
1869 if (!dev || !dev->enabled || s > 1 || s == dev->state) {
1870 return count;
1871 }
1872
1873 dev->state = s;
1874 gt1x_smart_cover_update_state();
1875
1876 return count;
1877 }
1878
1879 /**
1880 * gt1x_parse_sc_cfg - parse smart cover config
1881 * @sensor_id: sensor id of the hardware
1882 */
gt1x_parse_sc_cfg(int sensor_id)1883 int gt1x_parse_sc_cfg(int sensor_id)
1884 {
1885 #undef _cfg_array_
1886 #define _cfg_array_(n) GTP_SMART_COVER_CFG_GROUP##n
1887 u8 *cfg;
1888 int *len;
1889
1890 if (!gt1x_sc_dev)
1891 return -ENODEV;
1892 cfg = gt1x_sc_dev->config;
1893 len = >1x_sc_dev->cfg_len;
1894
1895 #if GTP_DRIVER_SEND_CFG
1896 do {
1897 u8 cfg_grp0[] = _cfg_array_(0);
1898 u8 cfg_grp1[] = _cfg_array_(1);
1899 u8 cfg_grp2[] = _cfg_array_(2);
1900 u8 cfg_grp3[] = _cfg_array_(3);
1901 u8 cfg_grp4[] = _cfg_array_(4);
1902 u8 cfg_grp5[] = _cfg_array_(5);
1903 u8 *cfgs[] = {
1904 cfg_grp0, cfg_grp1, cfg_grp2,
1905 cfg_grp3, cfg_grp4, cfg_grp5
1906 };
1907 u8 cfg_lens[] = {
1908 CFG_GROUP_LEN(cfg_grp0), CFG_GROUP_LEN(cfg_grp1),
1909 CFG_GROUP_LEN(cfg_grp2), CFG_GROUP_LEN(cfg_grp3),
1910 CFG_GROUP_LEN(cfg_grp4), CFG_GROUP_LEN(cfg_grp5)
1911 };
1912
1913 if (sensor_id >= sizeof(cfgs) / sizeof(cfgs[0])) {
1914 GTP_ERROR("Invalid sensor id.");
1915 return -1;
1916 }
1917
1918 *len = cfg_lens[sensor_id];
1919 if (*len == 0 || *len != gt1x_cfg_length) {
1920 memset(cfg, 0, GTP_CONFIG_MAX_LENGTH);
1921 *len = 0;
1922 GTP_ERROR("Length of config is incorrect.");
1923 return -1;
1924 }
1925
1926 memcpy(cfg, cfgs[sensor_id], cfg_lens[sensor_id]);
1927
1928 cfg[0] &= 0x7F;
1929 set_reg_bit(cfg[TRIGGER_LOC], 0, gt1x_int_type);
1930 set_reg_bit(cfg[MODULE_SWITCH3_LOC], 5, !gt1x_wakeup_level);
1931 } while (0);
1932 #endif
1933 return 0;
1934 }
1935
1936
1937 static struct kobj_attribute sc_attr =
1938 __ATTR(state, S_IWUGO | S_IRUGO, smart_cover_show, smart_cover_store);
gt1x_smart_cover_init(void)1939 static int gt1x_smart_cover_init(void)
1940 {
1941 int err = 0;
1942
1943 gt1x_sc_dev = kzalloc(sizeof(struct smart_cover_device), GFP_KERNEL);
1944 if (!gt1x_sc_dev) {
1945 GTP_ERROR("SmartCover init failed in step: 1.");
1946 return -ENOMEM;
1947 }
1948
1949 gt1x_sc_dev->enabled = 1;
1950 gt1x_parse_sc_cfg(gt1x_version.sensor_id);
1951
1952 if (!sysfs_rootdir) {
1953 /*this kobject is shared between modules, do not free it when error occur*/
1954 sysfs_rootdir = kobject_create_and_add(GOODIX_SYSFS_DIR, NULL);
1955 if (!sysfs_rootdir) {
1956 err = -2;
1957 goto exit_free_mem;
1958 }
1959 }
1960
1961 if (!gt1x_sc_dev->kobj)
1962 gt1x_sc_dev->kobj = kobject_create_and_add("smartcover", sysfs_rootdir);
1963 if (!gt1x_sc_dev->kobj) {
1964 err = -3;
1965 goto exit_free_mem;
1966 }
1967
1968 if (sysfs_create_file(gt1x_sc_dev->kobj, &sc_attr.attr)) {
1969 err = -4;
1970 goto exit_put_kobj;
1971 }
1972 GTP_INFO("SmartCover module init OK.");
1973 return 0;
1974 exit_put_kobj:
1975 kobject_put(gt1x_sc_dev->kobj);
1976 exit_free_mem:
1977 kfree(gt1x_sc_dev);
1978 gt1x_sc_dev = NULL;
1979 GTP_ERROR("SmartCover init failed in step:%d", -err);
1980 return err;
1981 }
1982
gt1x_smart_cover_deinit(void)1983 static void gt1x_smart_cover_deinit(void)
1984 {
1985 if (!gt1x_sc_dev) {
1986 return;
1987 }
1988
1989 kobject_del(gt1x_sc_dev->kobj);
1990 kfree(gt1x_sc_dev);
1991 gt1x_sc_dev = NULL;
1992 }
1993 #endif
1994
1995 /**
1996 * Charger Detect & Switch Module
1997 */
1998 #if GTP_CHARGER_SWITCH
1999 static u8 gt1x_config_charger[GTP_CONFIG_MAX_LENGTH] = { 0 };
2000 static struct delayed_work charger_switch_work;
2001 static int charger_work_cycle = 200;
2002 static spinlock_t charger_lock;
2003 static int charger_running;
2004 static void gt1x_charger_work_func(struct work_struct *);
2005
2006 /**
2007 * gt1x_parse_chr_cfg - parse charger config
2008 * @sensor_id: sensor id of the hardware
2009 * Return: 0: succeed, <0 error
2010 */
gt1x_parse_chr_cfg(int sensor_id)2011 int gt1x_parse_chr_cfg(int sensor_id)
2012 {
2013 #undef _cfg_array_
2014 #define _cfg_array_(n) GTP_CHARGER_CFG_GROUP##n
2015 u8 *cfg;
2016 int len;
2017 cfg = gt1x_config_charger;
2018
2019 #if GTP_DRIVER_SEND_CFG
2020 do {
2021 u8 cfg_grp0[] = _cfg_array_(0);
2022 u8 cfg_grp1[] = _cfg_array_(1);
2023 u8 cfg_grp2[] = _cfg_array_(2);
2024 u8 cfg_grp3[] = _cfg_array_(3);
2025 u8 cfg_grp4[] = _cfg_array_(4);
2026 u8 cfg_grp5[] = _cfg_array_(5);
2027 u8 *cfgs[] = {
2028 cfg_grp0, cfg_grp1, cfg_grp2,
2029 cfg_grp3, cfg_grp4, cfg_grp5
2030 };
2031 u8 cfg_lens[] = {
2032 CFG_GROUP_LEN(cfg_grp0), CFG_GROUP_LEN(cfg_grp1),
2033 CFG_GROUP_LEN(cfg_grp2), CFG_GROUP_LEN(cfg_grp3),
2034 CFG_GROUP_LEN(cfg_grp4), CFG_GROUP_LEN(cfg_grp5)
2035 };
2036
2037 if (sensor_id >= sizeof(cfgs) / sizeof(cfgs[0])) {
2038 return -1;
2039 }
2040
2041 len = cfg_lens[sensor_id];
2042 if (len == 0 || len != gt1x_cfg_length) {
2043 memset(cfg, 0, GTP_CONFIG_MAX_LENGTH);
2044 GTP_ERROR("Length of config is incorrect.");
2045 return -1;
2046 }
2047
2048 memcpy(cfg, cfgs[sensor_id], cfg_lens[sensor_id]);
2049
2050 cfg[0] &= 0x7F;
2051 cfg[RESOLUTION_LOC] = (u8) gt1x_abs_x_max;
2052 cfg[RESOLUTION_LOC + 1] = (u8) (gt1x_abs_x_max >> 8);
2053 cfg[RESOLUTION_LOC + 2] = (u8) gt1x_abs_y_max;
2054 cfg[RESOLUTION_LOC + 3] = (u8) (gt1x_abs_y_max >> 8);
2055
2056 set_reg_bit(cfg[TRIGGER_LOC], 0, gt1x_int_type);
2057 set_reg_bit(cfg[MODULE_SWITCH3_LOC], 5, !gt1x_wakeup_level);
2058 } while (0);
2059 #endif
2060 return 0;
2061 }
2062
2063
gt1x_init_charger(void)2064 static void gt1x_init_charger(void)
2065 {
2066 charger_work_cycle = 2 * HZ; /* HZ: clock ticks in 1 second generated by system */
2067 GTP_DEBUG("Clock ticks for an charger cycle: %d", charger_work_cycle);
2068 INIT_DELAYED_WORK(&charger_switch_work, gt1x_charger_work_func);
2069 spin_lock_init(&charger_lock);
2070
2071 if (gt1x_parse_chr_cfg(gt1x_version.sensor_id) < 0) {
2072 GTP_ERROR("Error occured when parse charger config.");
2073 }
2074 }
2075
2076 /**
2077 * gt1x_charger_switch - switch states of charging work thread
2078 *
2079 * @on: SWITCH_ON - start work thread, SWITCH_OFF: stop .
2080 */
gt1x_charger_switch(s32 on)2081 void gt1x_charger_switch(s32 on)
2082 {
2083 spin_lock(&charger_lock);
2084 if (SWITCH_ON == on) {
2085 if (!charger_running) {
2086 charger_running = 1;
2087 spin_unlock(&charger_lock);
2088 GTP_INFO("Charger checker started!");
2089 queue_delayed_work(gt1x_workqueue, &charger_switch_work, charger_work_cycle);
2090 } else {
2091 spin_unlock(&charger_lock);
2092 }
2093 } else {
2094 if (charger_running) {
2095 charger_running = 0;
2096 spin_unlock(&charger_lock);
2097 cancel_delayed_work(&charger_switch_work);
2098 GTP_INFO("Charger checker stoped!");
2099 } else {
2100 spin_unlock(&charger_lock);
2101 }
2102 }
2103 }
2104
2105 /**
2106 * gt1x_charger_config - check and update charging status configuration
2107 * @dir_update
2108 * 0: check before send charging status configuration
2109 * 1: directly send charging status configuration
2110 *
2111 */
gt1x_charger_config(s32 dir_update)2112 void gt1x_charger_config(s32 dir_update)
2113 {
2114 static u8 chr_pluggedin;
2115
2116 #if GTP_SMART_COVER
2117 if (gt1x_sc_dev && gt1x_sc_dev->enabled
2118 && gt1x_sc_dev->state) {
2119 return;
2120 }
2121 #endif
2122
2123 if (gt1x_get_charger_status()) {
2124 if (!chr_pluggedin || dir_update) {
2125 GTP_INFO("Charger Plugin.");
2126 if (gt1x_send_cfg(gt1x_config_charger, gt1x_cfg_length)) {
2127 GTP_ERROR("Send config for Charger Plugin failed!");
2128 }
2129 if (gt1x_send_cmd(GTP_CMD_CHARGER_ON, 0)) {
2130 GTP_ERROR("Update status for Charger Plugin failed!");
2131 }
2132 chr_pluggedin = 1;
2133 }
2134 } else {
2135 if (chr_pluggedin || dir_update) {
2136 GTP_INFO("Charger Plugout.");
2137 if (gt1x_send_cfg(gt1x_config, gt1x_cfg_length)) {
2138 GTP_ERROR("Send config for Charger Plugout failed!");
2139 }
2140 if (gt1x_send_cmd(GTP_CMD_CHARGER_OFF, 0)) {
2141 GTP_ERROR("Update status for Charger Plugout failed!");
2142 }
2143 chr_pluggedin = 0;
2144 }
2145 }
2146 }
2147
gt1x_charger_work_func(struct work_struct * work)2148 static void gt1x_charger_work_func(struct work_struct *work)
2149 {
2150 if (!charger_running) {
2151 GTP_INFO("Charger checker suspended!");
2152 return;
2153 }
2154
2155 gt1x_charger_config(0);
2156
2157 GTP_DEBUG("Charger check done!");
2158 if (charger_running) {
2159 queue_delayed_work(gt1x_workqueue, &charger_switch_work, charger_work_cycle);
2160 }
2161 }
2162 #endif
2163
gt1x_suspend(void)2164 int gt1x_suspend(void)
2165 {
2166 s32 ret = -1;
2167 #if GTP_HOTKNOT && !HOTKNOT_BLOCK_RW
2168 u8 buf[1] = { 0 };
2169 #endif
2170
2171 if (update_info.status) {
2172 return 0;
2173 }
2174 #if GTP_SMART_COVER
2175 if (gt1x_sc_dev) {
2176 gt1x_sc_dev->suspended = 1;
2177 }
2178 #endif
2179 GTP_INFO("Suspend start...");
2180 #if GTP_PROXIMITY
2181 if (gt1x_ps_dev && gt1x_ps_dev->enabled) {
2182 GTP_INFO("proximity is detected!");
2183 return 0;
2184 }
2185 #endif
2186
2187 #if GTP_HOTKNOT
2188 if (hotknot_enabled) {
2189 #if HOTKNOT_BLOCK_RW
2190 if (hotknot_paired_flag) {
2191 GTP_INFO("hotknot is paired!");
2192 return 0;
2193 }
2194 #else
2195 ret = gt1x_i2c_read_dbl_check(GTP_REG_HN_PAIRED, buf, sizeof(buf));
2196 if ((!ret && buf[0] == 0x55) || hotknot_transfer_mode) {
2197 GTP_DEBUG("0x81AA: 0x%02X", buf[0]);
2198 GTP_INFO("hotknot is paired!");
2199 return 0;
2200 }
2201 #endif
2202 }
2203 #endif
2204
2205 gt1x_halt = 1;
2206 #if GTP_ESD_PROTECT
2207 gt1x_esd_switch(SWITCH_OFF);
2208 #endif
2209 #if GTP_CHARGER_SWITCH
2210 gt1x_charger_switch(SWITCH_OFF);
2211 #endif
2212 gt1x_irq_disable();
2213
2214 #if GTP_GESTURE_WAKEUP
2215 gesture_clear_wakeup_data();
2216 if (gesture_enabled) {
2217 gesture_enter_doze();
2218 gt1x_irq_enable();
2219 gt1x_halt = 0;
2220 } else
2221 #endif
2222 {
2223 ret = gt1x_enter_sleep();
2224 if (ret < 0) {
2225 GTP_ERROR("Suspend failed.");
2226 }
2227 }
2228
2229 /* to avoid waking up while not sleeping
2230 delay 48 + 10ms to ensure reliability */
2231 msleep(58);
2232 GTP_INFO("Suspend end...");
2233 return 0;
2234 }
2235
gt1x_resume(void)2236 int gt1x_resume(void)
2237 {
2238 s32 ret = -1;
2239
2240 if (update_info.status) {
2241 return 0;
2242 }
2243
2244 #if GTP_SMART_COVER
2245 if (gt1x_sc_dev) {
2246 gt1x_sc_dev->suspended = 0;
2247 }
2248 #endif
2249 GTP_DEBUG("Resume start...");
2250
2251 #if GTP_PROXIMITY
2252 if (gt1x_ps_dev && gt1x_ps_dev->enabled) {
2253 GTP_INFO("Proximity is on!");
2254 return 0;
2255 }
2256 #endif
2257
2258 #if GTP_HOTKNOT
2259 if (hotknot_enabled) {
2260 #if HOTKNOT_BLOCK_RW
2261 if (hotknot_paired_flag) {
2262 hotknot_paired_flag = 0;
2263 GTP_INFO("Hotknot is paired!");
2264 return 0;
2265 }
2266 #endif
2267 }
2268 #endif
2269
2270 #if GTP_GESTURE_WAKEUP
2271 /* just return 0 if IC does not suspend */
2272 if (!gesture_enabled && !gt1x_halt)
2273 return 0;
2274 #else
2275 if (!gt1x_halt)
2276 return 0;
2277 #endif
2278
2279 ret = gt1x_wakeup_sleep();
2280 if (ret < 0) {
2281 GTP_ERROR("Resume failed.");
2282 }
2283 #if GTP_HOTKNOT
2284 if (!hotknot_enabled) {
2285 gt1x_send_cmd(GTP_CMD_HN_EXIT_SLAVE, 0);
2286 }
2287 #endif
2288
2289 #if GTP_CHARGER_SWITCH
2290 gt1x_charger_config(0);
2291 gt1x_charger_switch(SWITCH_ON);
2292 #endif
2293
2294 gt1x_halt = 0;
2295 gt1x_irq_enable();
2296
2297 #if GTP_ESD_PROTECT
2298 gt1x_esd_switch(SWITCH_ON);
2299 #endif
2300
2301 GTP_DEBUG("Resume end.");
2302 return 0;
2303 }
2304
gt1x_init(void)2305 s32 gt1x_init(void)
2306 {
2307 s32 ret = -1;
2308 s32 retry = 0;
2309 u8 reg_val[1];
2310
2311 /* power on */
2312 gt1x_power_switch(SWITCH_ON);
2313
2314 while (retry++ < 5) {
2315 gt1x_init_failed = 0;
2316 /* reset ic */
2317 ret = gt1x_reset_guitar();
2318 if (ret != 0) {
2319 GTP_ERROR("Reset guitar failed!");
2320 continue;
2321 }
2322
2323 /* check main system firmware */
2324 ret = gt1x_i2c_read_dbl_check(GTP_REG_FW_CHK_MAINSYS, reg_val, 1);
2325 if (ret != 0) {
2326 continue;
2327 } else if (reg_val[0] != 0xBE) {
2328 GTP_ERROR("Check main system not pass[0x%2X].", reg_val[0]);
2329 gt1x_init_failed = 1;
2330 }
2331
2332 #if !GTP_AUTO_UPDATE
2333 /* debug info */
2334 ret = gt1x_i2c_read_dbl_check(GTP_REG_FW_CHK_SUBSYS, reg_val, 1);
2335 if (!ret && reg_val[0] == 0xAA) {
2336 GTP_ERROR("Check subsystem not pass[0x%2X].", reg_val[0]);
2337 }
2338 #endif
2339 break;
2340 }
2341
2342 /* if the initialization fails, set default setting */
2343 ret |= gt1x_init_failed;
2344 if (ret) {
2345 GTP_ERROR("Init failed, use default setting");
2346 gt1x_abs_x_max = GTP_MAX_WIDTH;
2347 gt1x_abs_y_max = GTP_MAX_HEIGHT;
2348 gt1x_int_type = GTP_INT_TRIGGER;
2349 gt1x_wakeup_level = GTP_WAKEUP_LEVEL;
2350 }
2351
2352 /* get chip type */
2353 ret = gt1x_get_chip_type();
2354 if (ret != 0) {
2355 GTP_ERROR("Get chip type failed!");
2356 }
2357
2358 /* read version information */
2359 ret = gt1x_read_version(>1x_version);
2360 if (ret != 0) {
2361 GTP_ERROR("Get verision failed!");
2362 }
2363
2364 /* init and send configs */
2365 ret = gt1x_init_panel();
2366 if (ret != 0) {
2367 GTP_ERROR("Init panel failed.");
2368 }
2369
2370 gt1x_workqueue = create_singlethread_workqueue("gt1x_workthread");
2371 if (gt1x_workqueue == NULL) {
2372 GTP_ERROR("Create workqueue failed!");
2373 }
2374
2375 /* init auxiliary node and functions */
2376 #if GTP_DEBUG_NODE
2377 gt1x_init_debug_node();
2378 #endif
2379
2380 #if GTP_CREATE_WR_NODE
2381 gt1x_init_tool_node();
2382 #endif
2383
2384 #if GTP_GESTURE_WAKEUP || GTP_HOTKNOT
2385 gt1x_init_node();
2386 #endif
2387
2388 #if GTP_PROXIMITY
2389 gt1x_ps_init();
2390 #endif
2391
2392 #if GTP_CHARGER_SWITCH
2393 gt1x_init_charger();
2394 gt1x_charger_config(1);
2395 gt1x_charger_switch(SWITCH_ON);
2396 #endif
2397
2398 #if GTP_SMART_COVER
2399 gt1x_smart_cover_init();
2400 #endif
2401
2402 #if GTP_WITH_STYLUS
2403 gt1x_pen_init();
2404 #endif
2405 if (ret != 0)
2406 gt1x_power_switch(SWITCH_OFF);
2407
2408 return ret;
2409 }
2410
gt1x_deinit(void)2411 void gt1x_deinit(void)
2412 {
2413 #if GTP_DEBUG_NODE
2414 gt1x_deinit_debug_node();
2415 #endif
2416
2417 #if GTP_GESTURE_WAKEUP || GTP_HOTKNOT
2418 gt1x_deinit_node();
2419 #endif
2420
2421 #if GTP_CREATE_WR_NODE
2422 gt1x_deinit_tool_node();
2423 #endif
2424
2425 #if GTP_ESD_PROTECT
2426 gt1x_deinit_esd_protect();
2427 #endif
2428
2429 #if GTP_CHARGER_SWITCH
2430 gt1x_charger_switch(SWITCH_OFF);
2431 #endif
2432
2433 #if GTP_PROXIMITY
2434 gt1x_ps_deinit();
2435 #endif
2436
2437 #if GTP_SMART_COVER
2438 gt1x_smart_cover_deinit();
2439 #endif
2440
2441 if (sysfs_rootdir) {
2442 kobject_del(sysfs_rootdir);
2443 sysfs_rootdir = NULL;
2444 }
2445
2446 if (gt1x_workqueue) {
2447 destroy_workqueue(gt1x_workqueue);
2448 }
2449
2450 }
2451
2452